Technical field
[0001]
　The present disclosure, a communication device, a communication method and a computer program.
BACKGROUND
[0002]
　Techniques for allocating resources in D2D (Device-to Device) communication between the terminal apparatus has been disclosed (for example, Patent Document 1).
[0003]
　On the other hand, for the realization of the future of automatic operation, in recent years, there has been a growing expectation to the in-vehicle communication (V2X communication). The V2X communication, is an abbreviation for Vehicle to X communication, it is a system that car with the "something" to communicate. As an example here of "something", vehicle (Vehicle), facilities (Infrastructure / Network), pedestrians (Pedestrian), and the like (V2V, V2I / N, V2P). The wireless communication for cars, mainly up to now, but the development of 802.11p-based DSRC (Dedicated Short Range Communication) have been conducted, In recent years, an in-vehicle communication of LTE-based "LTE-based V2X standardization discussion of "is started.
CITATION
Patent Document
[0004]
Patent Document 1: JP-T 2015-508943 Patent Publication
Summary of the Invention
Problems that the Invention is to Solve
[0005]
　In the present disclosure, which can sense an efficient resources in communicating between devices that starting with V2X communication, new and improved communication apparatus, proposes a communication method and a computer program.
Means for Solving the Problems
[0006]
　According to the present disclosure, it allocates a resource region to which the terminal apparatus for performing inter-system communication can be selected resource, the information about the range of the sensing of the resource area and a control unit to be provided to the terminal device, the communication device is provided .
[0007]
　According to the present disclosure, to select a resource from the resource region allocated by the base station, in performing inter-device communication using the selected resources, depending on the range of the sensing of the resource area to the situation a control unit for determining a communication device is provided.
[0008]
　According to the present disclosure, it allocates a resource region to which the terminal can select resources to perform the inter-device communication, information relating to a range of sensing of the resource region comprises providing to the terminal device, a communication method is provided .
[0009]
　According to the present disclosure, to select a resource from the resource region allocated by the base station, in performing inter-device communication using the selected resources, depending on the range of the sensing of the resource area to the situation comprising determining the communication method is provided.
[0010]
　According to the disclosure, the terminal apparatus for performing inter-device communication is allocated a resource region that can be selected resources to execute the information about the range of the sensing of the resource regions to the computer to provide to the terminal device, the computer program It is provided.
[0011]
　According to the present disclosure, to select a resource from the resource region allocated by the base station, in performing inter-device communication using the selected resources, depending on the range of the sensing of the resource area to the situation to perform that determination to a computer, the computer program is provided.
Effect of the invention
[0012]
　According to the present disclosure described above, capable of sensing efficient resources in communicating between devices that starting with V2X communication, new and improved communication device, communication method, and a computer program is provided.
[0013]
　Incidentally, the above effect is not necessarily restrictive, with the above effects, or instead of the above effects, any effects shown herein, or other effects that may be grasped from the description, it may be achieved.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014]
It is an explanatory view illustrating the Figure 1] V2X operation scenarios.
It is an explanatory view illustrating the Figure 2] V2X operation scenarios.
[3] is an explanatory diagram for explaining a V2X operation scenario.
It is an explanatory diagram illustrating a FIG. 4] V2X operation scenarios.
It is an explanatory view illustrating the Figure 5] V2X operation scenarios.
6 is an explanatory diagram for explaining the IBE.
7 is an explanatory diagram for explaining TDM assignment and FDM allocation.
8 is an explanatory diagram for explaining the outline of the SPS.
9 is an explanatory diagram for explaining the outline of the SPS.
FIG. 10 is an explanatory diagram for explaining the outline of the SPS.
11 is a flowchart showing an operation example of the terminal apparatus according to an embodiment of the present disclosure.
In [12] the terminal device is an explanatory diagram for explaining the up data transmission reservation from the occurrence of transmission data.
FIG. 13 is an explanatory diagram showing an example of a Scheduling period introduced into the resource pool.
Is an explanatory view showing an example of FIG. 14 grouped Scheduling period.
[15] the terminal device is an explanatory diagram showing an example of performing resource hopping in accordance with the number of the Scheduling period.
FIG. 16 is an explanatory view for explaining a common sensing area.
17 is a block diagram showing an example of a configuration of a base station 100 according to the embodiment of the present disclosure.
18 is a block diagram showing an example of a configuration of a terminal apparatus 200 according to an embodiment of the present disclosure.
19 is a block diagram showing a first example of a schematic configuration of an eNB of the technology according to the present disclosure may be applied.
It is a block diagram showing a second exemplary configuration of an eNB [20] according to the disclosed technique may be applied.
21 is a block diagram showing an example of a schematic configuration of a smart phone 900 which techniques may be applied according to the present disclosure.
22 is a block diagram showing an example of a schematic configuration of the car navigation system 920 techniques may be applied according to the present disclosure.
FIG. 23 is an explanatory diagram showing an example of a Network side and pedestrians UE-side processing according to the embodiment.
FIG. 24 is an explanatory diagram showing an example of a Network side and pedestrian UE side process according to the embodiment.
[FIG 25 is an explanatory diagram showing an example of a Network side and pedestrian UE side process according to the embodiment.
FIG. 26 is an explanatory diagram showing an example of a Network side and pedestrians UE-side processing according to the embodiment.
FIG. 27 is an explanatory diagram showing an example of a Network side and pedestrians UE-side processing according to the embodiment.
[FIG. 28] is an explanatory diagram showing an example of a Network side and pedestrians UE-side processing according to the embodiment.
FIG. 29 is an explanatory diagram showing an example of a Network side and pedestrians UE-side processing according to the embodiment.
[FIG. 30] is an explanatory diagram showing an example of a Network side and pedestrian UE side process according to the embodiment.
[FIG. 31] is an explanatory diagram showing an example of a Burst sensing.
[FIG. 32] is an explanatory diagram showing an example of a Burst sensing.
[FIG 33 is an explanatory diagram showing an example of a Distributed sensing.
FIG. 34 is an explanatory view showing an example of sensing that the settings for each Sub-sensing in the same.
Is an explanatory view showing an example of FIG. 35 sensing of changing the settings for each Sub-sensing.
DESCRIPTION OF THE INVENTION
[0015]
　Reference will now be described in detail preferred embodiments of the present disclosure. In the specification and the drawings, components having substantially the same function and structure are a repeated explanation thereof by referring to the figures.
[0016]
　The description will be made in the following order.
　1. The embodiment of the present disclosure
　　1.1. Overview
　　1.2. Example
　　1.3. Configuration Example
　2. Application Example
　3. Summary
[0017]
　<1. Embodiments of the present
　disclosure> [1.1. Summary
　First, an outline of embodiments of the present disclosure.
[0018]
　As described above, for the realization of automatic operation of the future, in recent years, there has been a growing expectation for vehicle communication (V2X communication). The V2X communication, is an abbreviation for Vehicle to X communication, it is a system that car with the "something" to communicate. As an example here of "something", vehicle (Vehicle), facilities (Infrastructure / Network), pedestrians (Pedestrian), and the like (V2V, V2I / N, V2P). The wireless communication for cars, mainly up to now, but the development of 802.11p-based DSRC have been conducted, In recent years, start to standardize discussion of an in-vehicle communication of LTE-based "LTE-based V2X" doing.
[0019]
　An example use case of V2X communication below. Mainly the safety applications targeting has been required periodically sends and periodic messages, such as sending a message to a vehicle, communication such as an event trigger message to provide the necessary information in response to an event (3GPP TR 22.885).
[0020]
（V2Xユースケース例）
1.Forward
Collision Warning
2.Control
Loss Warning
3.V2V
Use case for emergency vehicle warning
4.V2V
Emergency Stop Use case
5.Cooperative
Adaptive Cruise Control
6.V2I
Emergency Stop Use Case
7.Queue
Warning
8.Road
safety services
9.Automated
Parking System
10.Wrong
way driving warning
11.V2V
message transfer under operator control
12.Pre-crash
Sensing Warning
13.V2X
in areas outside network coverage
14.V2X
Road safety service via infrastructure
15.V2I/V2N
Traffic Flow Optimization
16.Curve
speed Warning
17.Warning
to Pedestrian against pedestrian Collision
18.Vulnerable
Road User (VRU) Safety
19.V2X
by UE type RSU
20.V2X
Minimum QoS
21.Use
case for V2X access when roaming
22.Pedestrian
Road Safety via V2P awareness messages
23.Mixed
Use Traffic Management
24.Enhancing
Positional Precision for traffic participants
[0021]
　An example of these use requirements cases were based are shown below.
[0022]
[Table 1]

[0023]
　To achieve the above requirements, the standardization of the physical layer of V2X communication is already started in 3GPP. Mainly standardization of V2V communication is inter-vehicle communication, V2I / N, the standardization of V2P have been made.
[0024]
　As the base technology V2X communication, standardized D2D (Device to device) communication and the like in the past 3GPP. Since D2D communication terminal communication not via the base station, it is conceivable to be adapted to enhance the V2V communication or V2P communication (also adaptable to some V2I communication). The interface between such terminal is called a PC5 interface.
[0025]
　In the V2I communications and V2N communication, it is conceivable to adapt to enhance communication between the existing base station and the terminal. Such a base station, an interface between a terminal is called a Uu interface.
[0026]
　For thus V2X communication implementation, the PC5 interface or Uu interface, it is necessary to continue to enhance to meet the requirements.
[0027]
　The main enhancement points, for example, improve the resource allocation, the Doppler frequency measures, establishment of synchronization techniques, the realization of a low power consumption communication, and the like realizing the low delay communication.
[0028]
　(V2X operation
　scenario) describing V2X operation scenario. Configured based on V2V communication. It should be noted, is one of the automobile in the following description and become pedestrian become a V2P communication, comes to the end in the facilities and network and V2I / N communication.
[0029]
　1 to 5 are explanatory views for explaining a V2X operation scenario. Figure 1 shows a scenario where vehicle with each other to communicate directly without passing through the base station (E-UTRAN). Figure 2 illustrates a scenario where vehicle each other communicate via the base station. 3 and 4 show a scenario that communicate through and the base station (roadside apparatus (RSU) is UE, in this case) vehicle to each other terminal. Figure 5 is a vehicle with each other shows a scenario in which communication via the terminal (UE, roadside apparatus here (RSU)).
[0030]
　V2X communication, such as a requirement or signal conditions because different from the D2D communication, can not be used as it is an existing D2D communication. Therefore, it is necessary to enhance the shape to accommodate V2X communication. The difference between the features of the D2D communication and V2X communication shown below.
[0031]
(1) V2X communication is reliable, requires low delay communication.
(2) V2X specific traffic exists.
(3) V2X has a variety of links.
(4) IBE (In-Band Emission) problem.
(5) HD (Half Duplex) problem.
(6) Capacity than D2D is a major issue.　
(7) Position information is always obtained.
[0032]
　First, (1) it is apparent from the use case V2X communication. V2X communication Many safety applications, reliability is a very important indicator. In addition, the movement speed of the car is from early in comparison with walking use cases of D2D, it is necessary to realize a low-latency communication.
[0033]
　For V2X specific traffic (2), the V2X communication has two main Periodic traffic and Event trigger traffic is assumed. Periodic traffic is communications, such as to notify the peripheral vehicle data periodically, which is also a characteristic feature of V2X.
[0034]
　For various links (3) is a V2X communication as car communication target (X), is assumed V (vehicle) / I (Facilities) / N (Network) / P (pedestrian). That with such a wide variety of link is also V2X communication peculiar.
[0035]
　(4) of the IBE problem, comes to HD for the problem, relationship topology and RF performance of the terminal (5). First, will be described with reference to FIG IBE. In V2V communications, the base station - unlike communication between terminals, the positional relationship of the sending and receiving terminal always changes. If you were receiving terminal points of the sending terminal, there are cases where Emission from the transmitting side affects close to the receiving terminal. While maintaining the orthogonality on the frequency axis, the influence of IBE is distinguished from the proximity of the distance of the transmitting and receiving terminals. FIG. 6 shows a state in which the transmitting terminal A has given IBE to the receiving terminal D. If this way, such as the distance between the transmitting and receiving terminals is short, there is a possibility that occurred interfere with resources which are adjacent in the frequency domain. This problem can occur even D2D. However, in the V2X communication as many terminals than D2D communicates, IBE problem becomes more pronounced.
[0036]
　HD problem (5) refers to a problem that can not be received when the terminal is transmitting. Therefore, you can provide a chance of multiple received, or not assigned the transmission of other users in a frame for transmitting data, correspondence becomes necessary, such as. Although not a HD problem V2X of specific issues, a major constraint in the V2X communication where there is a need to do a lot of transmission and reception.
[0037]
　Next, Capacity of (6) will be described. As previously described, V2X communication as compared to the D2D communication number contained terminal becomes very large. Further, the vehicle for traveling over the road, inevitably terminal density would be locally increased. Therefore, in the V2X communications, improved Capacity is indispensable. Such unnecessary overhead is maximally removed, it is necessary to realize an efficient communication.
[0038]
　The position information of the last (7) is always obtained, as can be seen from installation rate of the navigation system of recent automobiles, automobile is assumed to always know the location information of its own. Such location information may be very important feature in order to enhance the V2X communication.
[0039]
　To solve these problems, 3GPP FDM; resource allocation method using (Frequency Division Multiplexing Frequency Division Multiplexing) is being studied now. TDM; for (Time Division Multiplexing time division multiplexed) assignment and FDM allocation will be described with reference to FIG. PC5 interface D2D communication and V2X communication is performed mainly control channel section (PSCCH: Physical Sidelink Control CHannel) and data channel unit: and a (PSSCH Physical Sidelink Shared CHannel).
[0040]
　To notify and resource instruction PSSCH in PSCCH, the TDM scheme, there is a problem delay to transmission from the occurrence of the packet becomes larger. On the other hand, the complexity of the terminal (Complexity) there is a merit that good. Incidentally, TDM allocation scheme in D2D is employed. For this, the FDM method, since the PSCCH in the frequency direction are mapped, the delay is improved. Further, by transmitting in SA (Scheduling Assignment) and Data the same SF (sub-frame), it can be expected to improve the problem of IBE and HD. Therefore, in the V2X communication, establishing communication method using the FDM method is demanded.
[0041]
　Addition of further enhancement in addition to the FDM system is also being studied. In order to solve the capacity problems of the above-mentioned (6), also currently being investigated introduction of the SPS (Semi-Persistent Scheduling). This is good use of traffic types characteristic having a feature in V2X communication. An overview of the SPS shown in FIGS. 8 to 10. Scheduling a plurality of data in one the SPS SA. Therefore, it is not necessary to send SA every time data transmission, it is possible to reduce overhead. Particularly in periodic communications, such as Periodical traffic of V2X, such scheduling is confirmed make a big effect. Therefore, in the V2X communication, it is also required the introduction of SPS.
As mentioned in (6), the capacity in V2X becomes a big problem. Therefore, it has been studied spatial reuse of frequency resources. In performing spatial reuse, as described in (7), utilizing the position information of the car. Enhancement using this location information is also being discussed in the current 3GPP.
[0042]
　So far is the outline of the PC5 interface enhancement. The V2X communication, as a method for resource allocation, there is a Centralized 2 kinds of Autonomous resource selection of resource allocation and Mode2 the Mode1. For Mode1, the base station performs all resource allocation PC5 interface. A terminal side needs only to transmit at the indicated resource to the base station. Although overhead between the base station terminal is concerned, communication characteristics because resources are allocated orthogonal good. On the other hand, in the Mode2, terminal from among the notified resource pool from the base station, to select the resources to use to transmit autonomously. No concern overhead Mode1, but because there is a possibility that would select the same resources as the other terminal, comes out problems Collision. Mode2 not only an In-coverage within Network of base stations, there is a merit that it operations in Out-of-overage.
[0043]
　For even Collision problem of this Mode2, it is some of the proposals currently being carried out. Solution is divided into two large. One is the Energy sensing. In Energy sensing, it senses a certain period of time resources, based on the sensing result, a method for selecting a resource for communication from a resource that is not relatively used. While it is easy, accurate is not as high, but because of power levels. However, it is possible to sense the systems other than LTE. Another method is SA decoding. It decodes the SA (control information) other users are transmitted, a method for recognizing the location of the resources being used. Although capable of resources used to discover accurately, can not be performed sensing SA resource itself, resources used to fail the decoding of SA there are disadvantages such as can not be detected.
[0044]
　In the inter-device communication, such as a V2X communication, transmission of different priorities packet has to be managed, it should be reliably performed with higher priority communications. Therefore, the terminal device is how to select a resource performing inter-device communication is very important.
[0045]
　Accordingly the present disclosure shall, in view of the contents of the above, efficient resources in communicating between devices such as a V2X communication has conducted extensive studies on techniques that can be selected. As a result, the present disclosure shall, as described below, the inter-device communication, such as a V2X communication, efficient, and have devised a technique resource can be selected by using the sensing.
[0046]
　Above was an overview of embodiments of the present disclosure. Next, it will be described in detail for Example of the embodiment of the present disclosure.
[0047]
　[1.2. EXAMPLES
　First, the terminal device that performs inter-device communication, such as a V2X communications, an overview of after sensing the resources to the transmission of data.
[0048]
　Figure 11 is a flow chart showing an operation example of the terminal apparatus according to an embodiment of the present disclosure. Shown in FIG. 11, the terminal apparatus for performing inter-device communication is a flowchart outlining an after sensing the resources to the transmission of data. Hereinafter, the operation example of the terminal device according to the embodiment of the present disclosure will be described with reference to FIG. 11.
[0049]
　Terminal device, in response to the trigger, the following resource selection, to determine whether to run the process of reselection (step S101). Here triggering on, for example and when the transmission packet generation, there can be various things, such as during resource collision detection. Details of which will be described later.
[0050]
　Resource selection, when it is determined that running the process of reselection (Step S101, Yes), followed by the terminal device performs sensing for resources area base station assigned (step S102). The sensing method, there is a SA decoding and Energy sensing. Terminal device, using these sensing methods, to recognize a wireless communication environment. The terminal device, based on a result of sensing from within the resource region, selects a resource used to send the data (step S103).
[0051]
　Selecting a resource to be used for transmission of data, followed by the terminal device performs the data transmission using the selected resource (step S104). Terminal devices, in addition to the implementation of the data transmission may be carried out resource reservation for future use as needed (step S105). The order of implementation of the embodiment and resource reservation data transmission may be reversed.
[0052]
　The communication method using a series of sensing described above, it is assumed that SPS, may be adapted to the Dynamic scheduling.
[0053]
　Above, by the terminal device and an overview of after sensing the resources to the transmission of data. Then, for each processing described above, respectively will be described in detail.
[0054]
　(1.
　triggering) (trigger 1-1. Resources reselection)
　will first be described in detail triggering of step S101 in FIG. 11. In the case of SPS, the terminal device is a basic to continue to use once the secured resources. Therefore, it requires some trigger when re-select the resource (reselection). Here, a description will be given trigger conditions.
[0055]
　(1) counter
　terminal unit may be, for example, as a trigger condition when the counter value is set for reselection resources become 0. Counter value may be setting in the terminal device, for example, by a random number. Random number may be notified by the SIB or RRC signaling from the base station, it may be pre-set in the terminal device. If the base station notifies the random number may be notified random value itself from the base station may notify the seed of the random number. Also, if the base station notifies the random number may be notified seed random number and the random number to the cell common may notify determined values for each terminal device.
[0056]
　The terminal device, a counter value, for example, may be subtracted every time the sub-frame or slot may be subtracted for each sub-frame and slot sensed. The terminal apparatus, a counter value, may be subtracted for each amount of traffic to be transmitted. In this case, the terminal device, if you have a high priority traffic may be increased subtraction amount. Threshold information for quantizing the traffic amount may be notified by SIB or RRC signaling from the base station. Threshold may be each terminal device, or in each cell. The threshold may be a per traffic type. The threshold may be preset in the terminal device.
[0057]
　The terminal apparatus, a counter value, a resource size using, may be subtracted using the gap between the resource size required to meet the actual communication request. The gap between the two resource size may be quantized, the terminal device, and the level into a plurality of stages thereon, may be carried out a subtraction of the counter value in response to that level. Threshold information for quantizing may be notified by SIB or RRC signaling from the base station. Threshold may be each terminal device, or in each cell. The threshold may be a per traffic type. The threshold may be preset in the terminal device.
[0058]
　The terminal apparatus, a counter value, may be subtracted each time acquiring transmission right. For example, the terminal device, when having acquired the transmission right to implement the sensing, transmission only may be carried subtracted without. Threshold information used for transmission rights acquisition may be notified by SIB or RRC signaling from the base station. Threshold may be each terminal device, or in each cell. The threshold may be a per traffic type. The threshold may be preset in the terminal device.
[0059]
　The terminal apparatus, base station, when the subtraction amount of the counter value from the peripheral terminal or RSU notified directly, the base station may subtract the amount instructed by the peripheral terminal or RSU. This also includes subtracting forced to 0 the counter value. From the base station can be notified of the subtraction of the counter value, for example, by RRC signaling. From the peripheral terminal can be notified of the subtraction of the counter value using the SCI or PSSCH.
[0060]
　The terminal apparatus, the counter value may be subtracted according to the traffic amount of the Sidelink. The terminal device, traffic volume, may be grasped using data reception amount from the peripheral terminal, may be grasped based on the traffic amount notified from the base station. Threshold information of the traffic amount may be notified by SIB or RRC signaling from the base station. Threshold may be set for each terminal device, it may be set for each cell. The threshold may be set for each traffic type. The threshold may be preset in the terminal device.
[0061]
　(2) it does not meet the requirements of resource allocation status terminal device
　terminal device may be a trigger condition if the resource allocation situation can not fulfill the request of the terminal device. The request from the terminal device, for example, delay requirements, reliability, fairness, there may be QoS, and the like.
[0062]
　The terminal device, as the resource allocation status, and resource sizes in use, may be used the gap between the resource size required to meet the actual communication request. The gap between the two resource size may be quantized, the terminal device, and the level into a plurality of stages thereon may determine a resource allocation status in accordance with the level. Threshold information for quantizing may be notified by SIB or RRC signaling from the base station. Threshold may be each terminal device, or in each cell. The threshold may be a per traffic type. The threshold may be preset in the terminal device.
[0063]
　(3) The terminal device may have found a resource collision (duplicate resources with other users) in the transmission of the future
　terminal devices, if you find a resource collision (duplicate resources with other users) in the transmission of the future it may be used as a trigger condition. The terminal device, for example, performs the SA decoding, grasps the resource allocation situation, or to discover whether there is an overlap between the transmission of its own device.
[0064]
　In this case, for example, the terminal device, the reselection may be performed if the number of occurrences of collisions is equal to or larger than the threshold. Occurrences of collisions may be each Transport block, it may be each Repetition. Threshold information may be notified by SIB or RRC signaling from the base station. Threshold may be each terminal device, or in each cell. The threshold may be a per traffic type. The threshold may be preset in the terminal device.
[0065]
　(4) The base station notifies reselection
　terminal device may be a trigger condition when the base station has indicated reselection.
[0066]
　The base station, for example, it may be determined whether it is necessary to reselection based on the degree of congestion of traffic (resource utilization). In this case, if the base station itself to monitor the resources of the Sidelink, get reports traffic information Sidelink from the terminal device. Terminal apparatus reports how traffic information may be set in SIB or RRC signaling from the base station.
[0067]
　The base station may also for example, it may be determined whether it is necessary to reselection based on the resource usage of a particular terminal (time or number of transmissions and transmission traffic volume). In this case, the terminal device may report the resource usage with respect to the base station periodically. The terminal device, a report method of resource usage may be set in SIB or RRC signaling from the base station.
[0068]
　(5) Other terminal apparatus notifies the release of the resource
　the terminal device may be a trigger condition when another terminal apparatus notifies the release of resources. In this case, the terminal device, the reselection may be performed when the resource release notice from another terminal device exceeds the threshold value. Resource release notification from another terminal device is transmitted, for example, by SCI. Threshold information may be notified by SIB or RRC signaling from the base station. Threshold may be each terminal device, or in each cell. The threshold may be a per traffic type. The threshold may be preset in the terminal device.
[0069]
　(6) notifies the collision report from another terminal apparatus
　is a terminal apparatus may be a trigger condition when another terminal apparatus notifies the collision report. In this case, the terminal device, the reselection may be performed when the collision report notification from another terminal device exceeds the threshold value. Collision report notification from another terminal apparatus is transmitted, for example, by SCI. Threshold information may be notified by SIB or RRC signaling from the base station. Threshold may be each terminal device, or in each cell. The threshold may be a per traffic type. The threshold may be preset in the terminal device.
[0070]
　(7) congestion Sidelink
　terminal device may be a trigger condition when the Sidelink is congested. In this case, the terminal device, the reselection may be performed when the degree of congestion of Sidelink exceeds a predetermined threshold. Note that the congestion degree of the Sidelink may be measured terminal apparatus, the base station may be measured. Threshold information may be notified by SIB or RRC signaling from the base station. Threshold may be each terminal device, or in each cell. The threshold may be a per traffic type. The threshold may be preset in the terminal device.
[0071]
　In the foregoing, the trigger condition mentioned seven examples of (1) to (7). Terminal devices, these trigger conditions may be used alone, or may be used in combination.
[0072]
　When the trigger conditions described above are satisfied, the terminal device carries out a re-selection of resources. During resource selection, to minimize the impact of IBE, the terminal device may implement a resource allocation using the position information. Some SA, by including the position information or the zone information of the position of the terminal apparatus for transmitting data, the terminal device detects the presence of the terminal device are in close, as much as possible and neighboring terminals same Subframe used to allow operations such as transmitting signals. Thus as possible and neighboring terminals by transmitting a signal using the same Subframe, leading to improvement of the aforementioned IBE problems.
[0073]
　(1-2. Prevention of divergence due to outbreak of reselection)
　terminal by the trigger conditions such as those described above can be carried reselection. However, if the reselection on all terminal devices in large quantities occur, it changes resources frequently the terminal device uses the meaning of sensing itself is eliminated. As a result, the receiving system to become unstable. How to prevent such divergence will be described.
[0074]
　(1) for controlling the divergence from the system
　for example, the terminal device, after satisfying the trigger condition reselection described above, really whether do reselection may be determined by a probability alpha. Probability α may be notified by SIB or RRC signaling from the base station. Probability α may be each terminal device, or in each cell. The probability α may be a per traffic type. The probability α may be set in advance in the terminal device.
[0075]
　Further, for example, the terminal device, after satisfying the trigger condition reselection described above, after reselection performed either using a newly selected resource, whether to use the resources of the past, may be determined by a probability β . Probability β may be notified by SIB or RRC signaling from the base station. Probability β may be each terminal device, or in each cell. The probability β may be in each type of traffic. The probability β may be set in advance in the terminal device. Probability β may be the same as the probability α, may be different.
[0076]
　Further, for example, the terminal device, the threshold used for the trigger condition reselection above may be increased uniformly. Signaling for the threshold modification is notified in SIB or RRC signaling from the base station. Terminal device in advance may be notified of the amount of increase or rate of increase from a base station, or may be set in advance. Then, the terminal device may be instructed to activation and release of increased threshold from the base station.
[0077]
　(2) reselection to grasp Do base stations are what extent occurs in the system
　for example, the terminal device, after performing reselection may report that it has performed the reselection to the base station. Terminal apparatus, the report process may be set in SIB or RRC signaling from the base station.
[0078]
　In this case, overhead can increase when all terminal devices reporting to a base station every reselection. Therefore, the terminal device, after performing reselection, that it has performed the reselection may be reported to the base station with a probability gamma. Probability γ may be notified by SIB or RRC signaling from the base station. Probability γ may be each terminal device, or in each cell. The probability γ may be a per traffic type. The probability γ may be pre-set in the terminal device. Probability γ may be the same as the probability α and / or β, may be different.
[0079]
　(2 sensing, data transmission, resource reservation)
　(2-1. Sensing area restrictions)
　in order to reduce the power consumption of the terminal device, it is desirable to limit the sensing region for sensing a resource area. In the following, the terminal device, how to define a sensing region, the data transmitted from the sensing for sensing area, how to define a resource reservation, will be described.
[0080]
　12, the terminal apparatus is an explanatory diagram for explaining the up data transmission reservation from the occurrence of transmission data. Resource area 300 includes a SA resources 301 and data resources 302.
[0081]
　When transmission data at a certain timing to the terminal device occurs, the terminal device performs sensing in the sensing region 311 made from time n-a ~ n-b intervals. Terminal device may use the SA sensing and / or energy sensing as a sensing. Terminal device, when the sensing in the sensing area 311, to select the resource at time n. Terminal device, selects a resource for both SA resource 301 and data resource 302.
[0082]
　If the selection of resources at the time n, followed by the terminal device at time n + c, performs transmission of SA using resource 321 for the SA resource 301, at time n + d, the data using the resource 322 of the data resource 302 It performs the transmission. Furthermore the terminal apparatus to reserve resources 323 of the data resource 302 for future (at time n + e) ​​data transmission.
[0083]
　Each parameters a through e of FIG. 12 is a positive value. Each parameter e from a shown in FIG. 12 may be set for each SPS. Further, a, each parameter b shown in FIG. 12 may be set in common among SPS.
[0084]
　The series of processing shown in FIG. 12 for the terminal apparatus is carried out, it is necessary to set to the terminal device of each parameter e from a.
[0085]
　(1) the parameters a, b
　parameters a, b, while significantly affect the accuracy of the sensing of the terminal device, since the sensing period can not meet the long and the delay requirements, it is desirable to set appropriately.
[0086]
　In the present embodiment, by providing a set of settings for a plurality of (a, b), sets the value from the base station to the terminal device. For example, Configuration 1 (a1, b1), Configuration 2 (a2, b2), ... is a setting like. A plurality of settings may be preset in the terminal device.
[0087]
　Each Configuration may be set for each traffic type, it may be set for each priority traffic. Each Configuration also, (Pedestrian UE, Vehicle UE or the like to be mounted on a vehicle pedestrian use), the position information (the terminal of the terminal device may be set, the type of the terminal device according to the moving speed of the terminal device device may be set by the resource pool), etc. which are used. The respective Configuration is resource usage Sidelink, for example, it may be set according to the resource utilization of the Sidelink. Each Configuration may be common between the terminal devices, it may be set for each terminal device. The respective Configuration may be common between the terminal devices, it may be set for each terminal device.
[0088]
　For example, if a message such that the latency requirements such as Event trigger message, to the terminal device, by which is assigned Configuration such as sensing window of the sensing region 311 is reduced to shorten the sensing time of the terminal device, transmission it is possible to reduce the delay to.
[0089]
　Also, for example, the moving speed is fast terminal device, the change in the wireless communication environment changes quickly, even if the measurement takes a longer sensing time, not correctly predict the wireless communication environment when actually performing transmission It comes out. Thus, for high moving speed terminal device, Configuration may are assigned like sensing window of the sensing area 311 is reduced.
[0090]
　Similarly, when assigning Configuration for each terminal device, for example Pedestrian for the terminal device is required to be suppressed to a small power consumption, such as the UE may be configured to reduce a sensing window of the sensing area 311 desirable. On the other hand, such as to perform V2V communication, the terminal device such as a margin in the battery may be set so as to increase the sensing window of the sensing area 311.
[0091]
　Incidentally, if the Configuration is set from the base station, the terminal device, the Configuration, may be set in SIB or RRC signaling from the base station. Or may be pre-Configuration is set in the terminal device.
[0092]
　SPS Oite, prediction of future resource usage with SA decoding is effective. Meanwhile, transmitting terminal, such as when to start the sensing immediately after transmission of the other terminals SA, which may decode the SA can not be performed. Further, there may be a case to fail to decode the SA. Terminal is difficult to predict the future resource usage in such cases.
[0093]
　Terminal devices, in order to receive maximum benefit of the sensing, the sensing result, or to predict the usage how future resource is important. Therefore, if realized environments such as high correlation of resource usage sensing area and a data transmission area, the terminal device, it is possible to predict the future resource usage from the situation in the sensing region with high accuracy.
[0094]
　In this embodiment, to introduce a Scheduling period to the resource pool. 13, Scheduling
is an explanatory view showing an example of a period. Scheduling period is provided for each resource pool.
[0095]
　In the present embodiment, to implement the grouping in this Scheduling period units. This grouping is set for each resource pool. Each group may be set in accordance with the geographic information. Figure 14 is an explanatory diagram showing an example of a grouped Scheduling period. Figure 14 shows an example of grouped Scheduling period every other one are shown. Of course, Scheduling
grouping pattern period is not intended to be limited to that shown in FIG. 14.
[0096]
　Terminal apparatus selects one group from a group of a plurality of Scheduling period, to perform the transmission. In this case, it is desirable to operate as correlation resource use among the Scheduling period increases.
[0097]
　In Scheduling period in the group of the Scheduling period, it may be numbered is made. The terminal device may be carried out such as resource hopping in accordance with the number of the Scheduling period. Figure 15 is an explanatory diagram showing an example of performing resource hopping according terminals within number of Scheduling period. Of course, the pattern of hopping is not intended to be limited to that shown in FIG. 15.
[0098]
　If the parameter is set on the resource hopping from the base station, the terminal device parameters may be set in SIB or RRC signaling from the base station. Also, pre-parameters may be set in the terminal device.
[0099]
　Further, Scheduling period, Group Scheduling period, the number of information Scheduling period, may be set in SIB or RRC signaling from the base station. The parameter a ~ e of FIG. 12 may be calculated from the interval of Scheduling period.
[0100]
　(2) parameter c, d
　parameters c, d are parameters that affect the transmission delay. Parameter c may be set for each traffic type, it may be set for each priority traffic. The parameter c may be set according to the moving speed of the terminal device, the terminal device type (Pedestrian UE, Vehicle UE, etc.), may be set by the location information of the terminal device. The parameter c may be common between the terminal devices, it may be set for each terminal device.
[0101]
　Parameter d may be set different values ​​between the terminal devices, or may be in common between the terminal devices. The parameter d may be the same value as the parameter c.
[0102]
　Parameter c, d, when set from the base station, is set in the terminal device in SIB or RRC signaling from the base station. The parameters c, d may be set in advance to the terminal device.
[0103]
　(3) Parameters e
　terminal device not only determines the data for transmission on the basis of the sensing result can also be performed reservation of resources to be used in the future. If reservation of resources is also performed, the resource reservation information (i.e., information about the parameters e) the need for a method to notify the periphery of the terminal device.
[0104]
　For example, the terminal device may notify the periphery of the terminal device resource reservation information with SCI. Specifically, the terminal device, including information parameter e to SCI, may inform the neighborhood of the terminal device. Terminal device, when including information parameters e, may be included frequency direction. The terminal device, the number of reserved resources may be included in the SCI by the parameter e. The terminal device, the location of resources reserved may be indicated in the bitmap. The terminal device, the information of the frequency hopping pattern may be included the SCI. Further, the hopping pattern used is set from the base station DCI, in SIB or RRC signaling. Further, the hopping pattern to be used may be set in advance to the terminal device.
[0105]
　Further, for example, the terminal device, and derive the parameters e from allocation method SA resources and data resources, may notify the peripheral terminal device. For example, the terminal apparatus derives the parameters e with a time interval or a frequency interval of repetition of SA resources or data resources, may notify the parameters e.
[0106]
　The terminal device derives the parameters e using a time offset or frequency offset between the SA resource and data resource, it may notify the parameters e.
[0107]
　The periphery of the terminal apparatus, from where the SA resource or data resources are allocated, may estimate the reservation resource location. For example, if the SA resource or data resources are allocated to the time domain or frequency domain prearranged, around the terminal device may determine that the resource reservation is performed. The pre-determined time region or the frequency region may be notified from the base station.
[0108]
　The terminal apparatus uses the indicator of repeating the mapping information SA resource or data resource (Time resource pattern specified in D2D), it may notify the information of resource reservation. Near the terminal apparatus, if it exceeds the threshold information of the Time resource pattern is defined, reserved resources in the other terminal devices may also be determined to be performed. The threshold may be a plurality, may be notified by SIB or RRC signaling from the base station, it may be pre-set in the terminal device.
[0109]
　Terminal device performs the resource selected after sensing, upon selection of the resource may not be secured resources from congestion like traffic. In this case, the resource selection by the terminal device is postponed, the correlation tends to be low between the resource selecting a sensing result of the past.
[0110]
　So the terminal device, but could not be secured resources when selecting a resource until the resource can be selected may extend the sensing period. In other words, next n1 resource selection timing from n, the sensing window is the time to n-a ~ n1-b.
[0111]
　However, continuing the sensing long, there is a possibility that the past of the old sensing information is a negative impact on resource selection. Thus the terminal device, for example, when it becomes more than a certain threshold value of n1-n, may shift by giving up a resource selection to reselection phase resources. Threshold information at this time may be notified to the terminal device in SIB or RRC signaling from the base station. Threshold may be each terminal device may be a per cell, or may be a per traffic type. The threshold may be set in advance in the terminal device.
[0112]
　The terminal apparatus, but could not be secured resources when selecting a resource until the resource can be selected, it may slide the sensing window. In other words, next n1 Resource timing from n, the sensing window is the time to n1-a ~ n1-b.
[0113]
　If SPS is more set, if keeping the sensing period, also if efficiently perform sensing, it is important.
[0114]
　If multiple SPS is used, so that the parameters a ~ e is defined for each SPS. Parameter a for defining a sensing region, for b, in parameter a_com defining a common sensing region, sets the B_com.
[0115]
　Figure 16 is an explanatory view illustrating a common sensing area. Two SPS (SPS1, SPS2) is shown in Figure 16. For SPS1, parameters a_sps1 as parameters defining a sensing region, but b_sps1 is used, for SPS 2, parameter a_com defining a common sensing region, B_com is allocated.
[0116]
　Note that each of the SPS, either using a common sensing region, whether used independently defined sensing area was in each SPS, may be notified to the terminal device in SIB or RRC signaling from the base station. This information may be in each terminal apparatus may be a per cell, or may be a per traffic type. Also this information may be previously set in the terminal device.
[0117]
　The transmission packet to the sensing region is generated, the terminal apparatus is conceivable may not perform the sensing. In that case, the terminal device, the time fraction sensing can not be performed, may extend the sensing area. That parameter a, the use of the b, the terminal device, b-a + z (z is extended min) may extend only sensing area. Then, when it becomes more than a certain threshold value extended sensing area, for example, if the b-a + z exceeds the threshold TH1, or if z exceeds the threshold TH2, the terminal device may retry the sensing. This threshold may be notified to the terminal device in SIB or RRC signaling from the base station. This threshold may be each terminal device may be a per cell, or may be a per traffic type. Also this threshold may be set in advance in the terminal device.
[0118]
　The V2X communication, messages having various priority is transmitted. Therefore, the terminal apparatus, how to reflect the priority information to the resource selection, also, how to obtain priority information, is important.
[0119]
　For example the terminal device may put the priority information of the packet into the SA. Other terminal devices in the SA decoding, the priority information of each packet, can be identified and resources to which the packet used. Otherwise, the terminal device, as a method for determining the priority information, for example, may be determined by the number of repetitions of the SA may be determined in the resource allocation position during repeated, to determine the assignment itself SA it may be. Of course the terminal device may also determine the priority information by the resource allocation position of the data instead of SA.
[0120]
　Also for example, a terminal device, put the priority information of the packet in the SA, it may be used the priority information of the packet to the resource selection. Other terminal devices in the SA decoding, the priority information of each packet, can be identified and resources to which the packet used. Similarly, the other terminal devices, performs Energy detection, it is possible to identify the relatively low power resources. Priority information of the received packet, by using the priority information of a packet results and transmitting terminal transmits the Energy detection, terminal device, even when the even resource in SA decoding was found to have been occupied, a high if you have a packet priority, a relatively low power, it is possible to priority of packets being transmitted selects a low resource.
[0121]
　Also for example, a terminal device may contain information of the transmission source within the SA. Information of the transmission source, the source of the attribute (vehicle, pedestrian, etc.), and may be such information that can identify a unique, such as ID. Other terminal devices in the SA decoding, and transmission source information of each packet, can be identified and resources to which the packet used.
[0122]
　For Pedestrian UE, because there is a request to perform transmission as much as possible to suppress the power consumption, the number of times of transmission of the packet is expected to be less than the vehicle. Therefore, the terminal device performs the sensing, when performing resource selection, such Pedestrian UE needs to be protected by priority. So the terminal device implemented sensing, if determined characteristics of the sender will allow resources selected so as not to affect the resources used for that sender.
[0123]
　On the other hand, the terminal it thinks that the robustness for the terminal, such as a car, it may be determined that no problem giving some interference. Thus the terminal device performs the sensing, even knew that terminal, such as a car is using the resource, to adjust such transmission power so as to reduce the interference, it may be transmitted.
[0124]
　Also for example, a terminal device may put the transmission power information in the SA. The transmission power information can include such TPC COMMAND information notified transmission power value, from the base station. Another terminal device calculates the path loss from the acquired transmission power information and received power information, may determine whether you want to use the same resource. For example, if a very small reception power information than the transmission power information, since it is assumed that the terminal device has transmitted the radio waves in the far, terminal device, it can be determined that may be using the same resources. Terminal device may use the energy sensing the calculation of path loss. The terminal device, the absolute value of the received power, may be carried out determination of whether to use the same resource. The terminal apparatus, together with the priority information of the packet may be performed for determining whether or using the same resources may be performed to adjust the maximum transmission power.
[0125]
　The terminal device, when carrying out the sensing, it is possible to calculate the path loss using information of the received power and transmitting power. Or it is from the path loss to the extent distant area sending device can be predicted. At this time, the terminal apparatus for carrying out the sensing, a case where the packet had a (e.g. periodic message to transmit at relatively low power consumption, and congestion may be smaller transmission power has occurred If the like), the terminal apparatus, in consideration of the distance between the transmission source terminal device, or may be transmitted on the same resource if the judgment can be performed.
[0126]
　The terminal device may transmit the determination in the same resource for each packet priority. For example terminal device, a result of the SA decoding, performs a path loss calculation even when the resource is found to be occupied, may be performed really decide whether not be sent. Terminal device, when a higher priority transmission packet, by carrying out such sensing, even resources occupied, selecting the resources are more likely to use, so that must be transmitted anyway it is possible to implement the transmission of high-Do priority packets.
[0127]
　(3 resource selection)
　terminal performs the selection of the resources on the basis of the sensing result of the resource area. If there is no available resource, the terminal devices can not transmit until it finds available resources. In this case, there is a possibility that comes out terminal can not send a long message. Therefore, it is desirable to provide a resource selection method to keep the fairness among the terminal devices. That performs sensing, to the terminal device that has not performed the resource selection in the resource selection phase, how preferentially to be able to select the resource is important.
[0128]
　In this embodiment, it performs a sensing terminal device that has not performed the resource selection in the resource selection phase, is forced into a reselection phase. For example, if you set the counter value as a trigger for reselection resources become 0, the terminal apparatus, if the selected resource is not performed in the resource selection phase, reselection and forced to zero the counter value to migrate to the phase. The terminal device, this time, to increase the value of the counter (Forced reselection counter) to record the forced number of shifts to reselection phase. Of course, trigger reselection resource may be others used.
[0129]
　The forced terminal has shifted to the re-selection phase device may be increased or decreased value of the next counter predetermined amount (x) only. Increasing, they are able to use the next time resources a long period of time. The value of this x can be notified to the terminal device in SIB or RRC signaling from the base station. The value of this x can be a each terminal device may be a per cell, or may be a per traffic type. The value of x may be preset in the terminal device.
[0130]
　Decrease amount of the next counter may be adjusted by forced reselection counter. For example, well multiplied by the forced reselection counter x as increased or decreased amount of the next counter, are multiplied by forced reselection counter x may be increased or decreased amount of the next counter.
[0131]
　The terminal apparatus forced into reselection phase may be shortened for the next sensing period. For example, it may be subtracted the value of the parameter a for defining the sensing period by a predetermined amount (y). The value of this y may be notified to the terminal device in SIB or RRC signaling from the base station. The value of this y may be each terminal device may be a per cell, or may be a per traffic type. The value of this y may be pre-set in the terminal device.
[0132]
　Terminal device, when the value of the forced reselection counter reaches or exceeds a predetermined threshold, may report to that effect to the base station. The base station, to the value of the forced reselection counter exceeds a predetermined threshold terminal, preferentially allocating resources. This threshold may be notified to the terminal device in SIB or RRC signaling from the base station. This threshold may be each terminal device may be a per cell, or may be a per traffic type. Also this threshold may be set in advance in the terminal device.
[0133]
　For example the base station, to the value of the forced reselection counter terminal device becomes equal to or greater than a predetermined threshold value, may provide new resource pool, they are instructed to refrain from transmitting to the other terminal devices good.
[0134]
　Terminal device from the information obtained from the SA, may be determined resources that are not occupied by another terminal is the possible resources, with energy sensing, it determines the transmittable resources equal to or smaller than the specified threshold value it may be. Terminal device from the information obtained from the SA, if there is no resource which is not occupied by another terminal, using energy sensing, may determine the transmission available resources if less than the specified threshold value.
[0135]
　In this case, the terminal device may select the resource by using the threshold value set for each priority information. The priority information, for example, a transmission packet type, the type of the terminal device (Pedestrian, Vehicle etc.), the transmission packet size, there can be forced reselection counter (backoff timer), and the like. Threshold for each priority information may be notified to the terminal device in SIB or RRC signaling from the base station. This threshold may be each terminal device may be a per cell, or may be a per traffic type. Also this threshold may be set in advance in the terminal device.
[0136]
　Also at this time, the terminal device may select the resource according to the transmission power. For example, a low terminal device transmit power and available resources of detecting a certain power, high terminal transmission power may be selected to detect the small power resources. Linking the transmit power and the threshold information may be notified to the terminal device in SIB or RRC signaling from the base station. This association may be each terminal device may be a per cell, or may be a per traffic type. Also this association may be previously set in the terminal device. The terminal device may use TPC COMMAND information notified from the base station instead of transmission power.
[0137]
　The terminal device may determine whether to use the resource according to the transmission power of its own device. For example, the terminal device, the determination of whether to use the resource, and the detected power, if if the difference between the transmission power of its own device exceeds the threshold value, it may be determined that the use of resources. This threshold may be notified to the terminal device in SIB or RRC signaling from the base station. This threshold may be each terminal device may be a per cell, or may be a per traffic type. Also this threshold may be set in advance in the terminal device.
[0138]
　(Improvement of power consumption in V2P communication)
　will now be described with respect to the improvement of power consumption in the V2P communication. The requirements in V2P communication, for example, there are the following such a request.
· Delay request: within 500ms from the server to the terminal. V2P of End-to-end in a 100ms within
operation request: Multi MNO (Mobile Network Operator) corresponding
Power consumption request: minimize the battery consumption
coverage request: cover a range that can withstand about 4 seconds. If the speed of 100km / h roughly * 4 = 27.7 110.8M
-message request: The size is typically 50 to 300 bytes, up to 1200 bytes
and communication quality requirements: up to 280km / h in a motorcycle-car, pedestrians and 30 minutes by car establish a communication in at up to 160km / h in the environment
[0139]
　Since the Pedestrian scenario UE (pedestrian terminal) communication using a device such as a smart phone is assumed, unlike car batteries it is rich, an increase in power consumption due to V2P communication is a serious problem. For V2P communication realization becomes indispensable communication with low power consumption. Hereinafter, we describe the power consumption related issues and solutions in V2P communication.
[0140]
　(1) Pedestrian operation of a UE
　and pedestrian terminal and car terminal, share the same resource pool, more pedestrian terminal when selecting the autonomously resources occur resource conflict (resource collision) is the car terminal it can degrade the PPR (Packet Reception Ratio). As the sensing of the car terminal, it can improve the problem of resource collision by performing the sensing. On the other hand, however, the pedestrian terminal would increase power consumption and sensing the resource. Therefore, a method of Activation sensing function only when sensing is required is desired. For example, there are methods such as in accordance with the congestion degree status of the UE terminal location and network, to Activation a sensing function.
[0141]
　By using different resource pools pedestrian terminal and car terminal, resource conflicts between the pedestrian terminal and car terminal will not. In that case, the pedestrian terminal without sensing, it is possible to perform random resource selection of (random selection).
[0142]
　Overall flow of flow is measured → decision → control. Each implementation body is a network side or terminal side. In the control there is autonomous control and central control. For autonomous control, and Activation of sensing function in which the location information to the base, is conceivable and Activation sensing function by signal detection (signaling). In the case of central control, Network, eNB, RSU, can be considered Activation sensing function by an instruction from the third party device.
[0143]
　Differences in either autonomous control or central control, the only difference is whether the principal for determination in either Network side in the UE side. Therefore, location-based Activation, in each Activation by the signal detection, determination at the UE side, two of the determination in Network side will be described. Note that the Network side, in the present embodiment shows a central control station, such as eNB and RSU.
[0144]
　(1-1) location-based Activation
　when in the vicinity of pedestrians themselves no car terminal, P2V communication is not necessary. Automobile because on the road, pedestrian terminal determines whether you are in the vicinity of the road. Pedestrian terminal only if you are in Roadside causes Active sensing function. Measurement of the position, determination of whether there on the road near the control of sensing functions, pedestrian UE side may be made on either the network side. If the result of the determination is not performed Activation, pedestrian UE can select a Candidate resources in the resource pool randomly. In the case where the implementation places different, it is required signaling as required.
[0145]
　The positioning method of measuring the terminal side, GNSS, or the like A-GNSS. The positioning method of measuring the Network side, OTDOA (Observed Time Difference of Arrival), UTDOA (Uplink Time Difference of Arrival), D2D aided positioning, E-CID (Enhanced Cell Identification), TBS (Terrestrial beacon systems), Wi- there is such as Fi (registered trademark), Bluetooth (registered trademark), a measurement that is based.
[0146]
　An example of a determination process. Advance map information in advance to obtain, comparing a position information and map information for pedestrians UE itself. Then, if the pedestrian UE is determined to in the vicinity road, sensing is Activate. Or it may be determined whether the Activate based on the three-dimensional information. That is, the height direction may be taken into account in the decision. For example, a pedestrian UE being in Gerbil may not be performed sensing. When it is determined to be approaching a road within a predetermined time, it may be determined that the sensing is Activate.
[0147]
　An example of a control process. In the control process performs Activation of sensing function pedestrian UE. Parameters required for sensing may be provided from the network side to the pedestrian UE side, the network parameters necessary for sensing may be the configure (preconfigure) pedestrians UE. Incidentally, in the case of not performing Activation of sensing function pedestrian UE is, Explicitly or implicitly notification is performed.
[0148]
　The information on the time axis, for example, the period of sensing the duration of the sensing, there is a start origin of sensing. The information of the frequency axis, for example, there is a band to be sensed. As sensing method, for example, a combination of a SA decoding, Energy sensing, SA decoding and energy sensing, and the like.
[0149]
　Will be described with reference to the drawings flow of a series of processes. Figure 23 is an explanatory diagram showing an example of a process of Network side and pedestrians UE side according to an embodiment of the present disclosure. 23 shows the measurement, judgment, an example of performing all control pedestrian UE side is illustrated. That is, the pedestrian UE performs measurement processing of the position (step S201), the sensing function based on the measurement results do determination process whether to Active (step S202), control the execution based on the determination process ( step S203). In this case, the signaling is not required. Moreover, the pedestrian UE follows this flow in case of OOC (Out-Of-Coverage). Also in this case, it is the configure (preconfigure) pedestrians UE information related to sensing.
[0150]
　Figure 24 is an explanatory diagram showing an example of a process of Network side and pedestrians UE side according to an embodiment of the present disclosure. Figure 24 is a measurement carried out at pedestrian UE side determination example of performing control in the Network side are shown. That is, the pedestrian UE performs measurement processing of the position (step S211), the measurement results do determination process whether to Active sensing functions based (step S212), and notifies the determination result to the Network side (step S213). Network side performs control based on the determination result (step S214), and notifies information related to Activation notification and sensing the sensing function (step S215). If the information related to sensing is the configure (preconfigure) pedestrians UE is pedestrian UE is not required to notify the determination result to the Network side. In addition, in the case of this case, if you do not perform the Activation signaling is not required, pedestrian UE performs a random selection.
[0151]
　Figure 25 is an explanatory diagram showing an example of a process of Network side and pedestrians UE side according to an embodiment of the present disclosure. Figure 25 is measured, and controls pedestrian UE side, and example of performing the indicated judgment in the Network side. That is, the pedestrian UE performs measurement processing of the position (step S221), and notifies the measurement result to Network side (step S222). Network side, the sensing function based on the measurement results do determination process whether to Active (step S223), it performs Activation notification sensing function pedestrians UE (step S224). Pedestrian UE performs a control based on the notification (step S225). In this case, to the configure (preconfigure) pedestrians UE information related to sensing.
[0152]
　Figure 26 is an explanatory diagram showing an example of a process of Network side and pedestrians UE side according to an embodiment of the present disclosure. Figure 26 performs measurement pedestrian UE side, judgment, example of performing control in the Network side are shown. That is, the pedestrian UE performs measurement processing of the position (step S231), and notifies the measurement result to Network side (step S232). Network side, the sensing function based on the measurement result is performed whether the determination processing is Active (step S233), control the execution based on the determination process (step S234). The Network side notifies information related to Activation notification and sensing the sensing function (step S235). In this case, to the configure (preconfigure) pedestrians UE information related to sensing.
[0153]
　Figure 27 is an explanatory diagram showing an example of a process of Network side and pedestrians UE side according to an embodiment of the present disclosure. 27 performs the measurement in the Network side, judgment, example for controlling pedestrian UE side is illustrated. That, Network side performs the measurement processing of the position (step S241), and notifies the pedestrian UE measurement results (step S242). Pedestrian UE performs one of determination processing whether to Active sensing function based on the obtained measurement result (step S243), executes the control based on the determination process (step S244). In this case, to the configure (preconfigure) pedestrians UE information related to sensing.
[0154]
　Figure 28 is an explanatory diagram showing an example of a process of Network side and pedestrians UE side according to an embodiment of the present disclosure. Figure 28 is a measurement control performed in the Network side, an example of performing determination by the pedestrian UE side is illustrated. That, Network side performs the measurement processing of the position (step S251), and notifies the pedestrian UE measurement results (step S252). Pedestrian UE performs determination of whether processing is Active sensing function based on the obtained measurement result (step S253), and notifies the determination result to the Network side (step S254). Network side performs control based on the determination result (step S255), and notifies information related to Activation notification and sensing the sensing function (step S256). If the information related to sensing is the configure (preconfigure) pedestrians UE is pedestrian UE is not required to notify the determination result to the Network side. In addition, in the case of this case, if you do not perform the Activation signaling is not required, pedestrian UE performs a random selection.
[0155]
　Figure 29 is an explanatory diagram showing an example of a process of Network side and pedestrians UE side according to an embodiment of the present disclosure. Figure 29 is measured, make decisions in the Network side, an example for controlling pedestrian UE side is illustrated. That, Network side performs the measurement processing of the position (step S261), the measurement results do determination of whether processing is Active sensing functions based (step S262), and notifies the pedestrian UE determination result (step S263). Pedestrian UE performs a control based on the determination process (step S264). In this case, to the configure (preconfigure) pedestrians UE information related to sensing.
[0156]
　Figure 30 is an explanatory diagram showing an example of a process of Network side and pedestrians UE side according to an embodiment of the present disclosure. FIG 30, the measurement, judgment, example of performing all the control in the Network side are shown. That, Network side performs the measurement processing of the position (step S271), the sensing function based on the measurement results do determination process whether to Active (step S272), control the execution based on the determination process (step S273). The Network side notifies information related to Activation notification and sensing the sensing function (step S274). If the information related to sensing is the configure (preconfigure) pedestrians UE is pedestrian UE is not required to notify the determination result to the Network side. In addition, in the case of this case, if you do not perform the Activation signaling is not required, pedestrian UE performs a random selection.
[0157]
　(1-2) Activation by signal detection
　will be described an example of Activation by then signal detection. In this example, the pedestrian the UE Active sensing function triggers a signal detection from an automobile. eNB or eNB type RSU, it sends a signal.
[0158]
　(Measurement)
　measured is, for example, V2P communication band power, sidelink synchronization signal / sidelink broadcast signal from motor vehicles, eNB / DCI from RSU, network Channel level (may be pedestrian UE measures, eNB or RSU may notify) is a general information of the car of a packet from an automobile or eNB / RSU (transmission time and transmission band).
[0159]
　Measurement method is carried out by measurement using the parameters required for monitoring. Parameters required for monitoring, for example, eNB, (which is pre-configuration) RSU or configuration has been, obtained from parameter. eNB, RSU or configuration parameters, the band information, synchronization information, providing a Measurement gap. Pedestrian UE, the bandwidth information from the following in accordance with the measurement object (band information to be monitored), synchronization information (synchronization information in the band to be monitored. Frame timing, such as the center frequency information), Measurement gap information (Measurement period, the measurement period to obtain one or more of, etc.).
[0160]
　Pedestrian UE performs a measurement in accordance with the Measurement gap. For example, eNB, RSU or (as pre-configuration) configuration has been, parameters are provided. gap is set on the basis of the pedestrian UE information. The information of the pedestrian UE, for example, position information of the terminal, RF number, there is a remaining battery capacity or the like. Other, pedestrian UE may perform the measurement corresponding to the degree of congestion of the network.
[0161]
　(Decision)
　pedestrian UE, when detecting a specific message or a certain threshold value or more signals or messages, to Activate the sensing function. Message, for example, DCI / broadcast Signal, signal power, and the like Channel level. The DCI / broadcast signal, information of the resource pool (for example pedestrian if you set a random selection dedicated resource pool, sensing is required) there is. Also the DCI / broadcast signal, there is information about the traffic of automobiles UE. The information about the traffic on automobile UE, there is a car UE-settable transmission cycle. For example, by a pedestrian UE and automotive UE traffic model, possibly a collision occurs if low seems, sensing is not required.
[0162]
　The signal power, for example, bands of S-RSSI, RSRP, and the like RSRQ. The Channel level, there are for example CBR (Channel Busy Ratio), when it becomes more than certain threshold CBR, pedestrians the UE, the sensing function to Active.
[0163]
　(Control)
　pedestrian UE may obtain or update the control information necessary for sensing. If it is already provided, or configure (pre-configure), pedestrian UE may use its is provided, or configure the (pre-configure) the parameter being. The pedestrian UE may perform a query to eNB or RSU to obtain control information necessary for sensing, control information necessary for sensing may be asked to broadcast the eNB or RSU.
[0164]
　(2) Details of the sensing
　when the pedestrian terminal of the sensing function is Active, but is desired to be always sensed (the so-called Full sensing) as the car terminal, the power consumption is too large for the pedestrian terminal. Therefore, the sensing function of the pedestrian terminal even when made to Active, further reduction in power consumption is demanded. By using the pedestrian terminal different sensing method and a car terminal, based on characteristics such as transmission traffic pedestrian terminal and car terminal, but may differ in parameter also pedestrian terminal and car terminal regarding sensing. It also includes a packet of pedestrian terminal when being sent do not know, I do not know the timing of the resource selection. Therefore, influence setting timing sensing the power consumption for the pedestrian terminal.
[0165]
　In this embodiment, the pedestrian terminal is not a full sensing, senses only a portion of the resource. That pedestrian terminal performs a partial sensing (partial sensing). Partial sensing can be classified into two types of partial sensing that Burst sensing and Distributed sensing. The following description of each method.
[0166]
　(2-1) Burst sensing
　Burst
sensing is (a period in which the car terminal sensing, for example, 1s is set to) sensing period in a method of performing sensing once, resource sensing target (Sub -sensing window) causes consists consecutive subframes. Sub-sensing
window is the same size as the transmittable resources candidates (Selection window). Figure 31 is an explanatory diagram showing an example of a Burst sensing.
[0167]
　(2-2) Distributed sensing
　maximum reservation period of the car terminal will be 1 second. To possible sensing without Mola transmission packets from the car terminal, the full sensing performed from 1 second before performing the resource selection. If Burst sensing, only resources within a predetermined time (less than 1 second) and prior to selecting a resource not sensed. If reservation period of the car terminal is larger than the size of the burst sensing window, there is a case that the transmission packet is not sensed. Thus it pedestrian terminal will select a resource already used when selecting a resource, there is a possibility that the collision occurs. Figure 32 uses the burst sensing, is an explanatory diagram showing a problem that collision occurred. Therefore, it is necessary to sense over the entire time period of 1 second.
[0168]
　Distributed sensing is performed by multiple sensing the Sensing should do period. Each of the sensing period is defined as Sensing period. Each of the Sub-sensing period is the same size as the Selection window. Terminal uses the sensing results of multiple Sensing period, recognize resource usage in Selection window, determining resource to be transmitted. For example, in the case Sensing should do period is 1 second, for example, divided into periods of every 100 milliseconds, to determine the Sensing period within a period. Figure 33 is an explanatory diagram showing an example of a Distributed sensing.
[0169]
　(Distributed sensing with fixed window)
　Delimiting one second subframe (1000 subframe) to 100ms intervals, the 10 periods. Including all of the period, for 10 times of sub-sensing. Settings for each Sub-sensing period can be the same over a period to be sensed. In other words, in each of the sensing period, starting subframe and sensing period for sensing, distance sensing is fixed. Figure 34 is an explanatory diagram showing an example of a sensing in which the settings for each Sub-sensing in the same. Moreover, the pedestrian terminal, it is desirable to sense the same region as the own resource pools for transmission, since the sensing of the same area as the resource pool for transmission, reliable.
[0170]
　(Distributed sensing with shifted window)
　Delimiting one second subframe (1000 subframe) to 100ms intervals, the 10 periods. Including all of the period, for 10 times of sub-sensing. Maximum delay of the transmission packet of the car terminal 100ms so, performs sub-sensing to 100ms intervals. Settings for each Sub-sensing, for example starting subframe, the sensing period of the sensing interval of the sensing can be variably set. Figure 35 is an explanatory diagram showing an example of a sensing of changing the settings for each Sub-sensing. Pedestrian terminal of the Starting subframe, may be determined randomly, may acquire patterns from the base station side. In the case of this Shifted window, since it is not necessary to limit the resource pool for transmission, it is possible to increase the flexibility of the resource selection. Parameters for these sensing, packet reservation period related parameters (e.g. i * P: i is a component of a packet reservation period (P * i), P is a fixed value and the underlying, i is configurable from the network a parameter a is), parameters related to packet reselection (reselection counter) is a channel congestion degree CBR (channel Busy Ratio), using one or more parameters used to determine the target area to be sensed, It is set.
[0171]
　Here it will be described how to modify the parameters of the partial sensing by i. Here, i is a component of a packet reservation period (P * i), P is a fixed value and the underlying, i is a parameter that can be set from the network. For example, as the car terminal is P = 100 ms. Selectable values ​​of i is displayed in the set. For example, expressed as {0, 1, 2, 3 ...}. In the case of i = 0, does not perform the packet reservation. If the value of i is nonzero, reserving the same resources of the current transmission in i th next resource pool resource pool of the current transmission (the same frequency resources and time resources with the same offset). i may be set by the base station as a bit map.
[0172]
　Here parameters related sensing the start position of the sensing window, the sensing window size, frequency range of sensing, sensing of the resource pool may include the number of the sensing window.
[0173]
　Setting parameters for sensing either the network side or the pedestrian terminal itself may be performed. Further, it may be Preconfiguration the terminal. Pedestrians terminal, using a CBR network may set the parameters related to sensing. For example, if the network is congested, it sets a larger sensing window size increases the sensing candidates. Further, for example, the Sub sensing period to be subjected to sensing, it may be determined using the CBR. Pedestrians terminal, using the parameters related to reselection of a packet (such as a re-selection counter), may set a parameter relating to sensing. For example, by using a configurable set value reselection counter may be set to a region for performing sensing.
[0174]
　Parameters relating to sensing will now be described with parameters related to the parameter i, the network of CBR or reselection of a packet relates to the reservation period, how to set using a parameter called alpha.
[0175]
　Where α is a parameter showing the (Sub sensing window in the Sub sensing period) target area to be sensed. That is, whether it is sufficient sensing which Sub sensing window in which the sensing to be the period determined using the parameter alpha. Parameter α is notified from the base station. For example, the parameter i, after determining the Sub sensing window that affect Selection window, they were ranking, or to sensing up to which order is determined by using the parameter alpha. In addition to this, it may notify the terminal directly the Sub sensing window number to be sensed from the base station.
[0176]
　Pedestrian terminal is sensed, when performing resource selection, the result of the sensing, resources available in resource candidates for transmission is sometimes considerably less. In that case, it is necessary to increase the resources for transmission. Therefore, to extend the size of the Sub sensing period, increasing the candidate resources for resource selection. In addition to expansion, may be set newly added sensing area in Sub sensing period.
[0177]
　Timing extend the size of the Sub sensing period, the terminal is more than a predetermined number of times, may be when detecting congestion of the channel. That is, the pedestrian terminal after sensing more than a certain sensing times in, calculate the resource usage in the candidate default transmission resource. If the utilization rate is constant or performs sensing pedestrians terminal sets the new sensing candidates. The terminal, a predetermined number of times or more, when detecting congestion of the channel to cancel the subsequent sensing, may be switched to a random selection.
[0178]
　Here, the predetermined sensing times (beta) and threshold setting for congestion judgment of sensing (theta) may be set from the network side may be set by the terminal itself. It may also be Pre-configuration.
[0179]
　Pedestrian terminal performs sensing the sensing the number of over beta, if greater than the resource usage of the candidates of transmission resources theta, pedestrian terminal sets a new sensing candidates, perform sensing. When the pedestrian terminal has completed the sensing, based on all the sensing result selects a transmission resource. Setting up a new sensing candidate pedestrian terminal itself may be set at random, or may be set through a method of the network side is set. For example, when setting a new sensing candidate shifts at a certain subframe that is based on the old sensing candidates.
[0180]
　Pedestrian terminal performs sensing the sensing the number of more than beta, the resource usage of the candidates of transmission resource if greater than theta, in order to reduce power consumption, it is to abort the sensing. When the pedestrian terminal selects a transmission resource, the resource that can be used with default transmission resource candidates based on the sensing result, and all of the resources other than transmission resource candidates as candidate, it is selected.
[0181]
　[1.3. Configuration Example
　Next, with reference to FIG. 17, an example of a base station (eNB) 100 of the configuration according to the embodiment of the present disclosure. Figure 17 is a block diagram showing an example of a configuration of a base station 100 according to the embodiment of the present disclosure. Referring to FIG. 17, the base station 100 includes an antenna unit 110, the wireless communication unit 120, a network communication unit 130, storage unit 140 and the processing unit 150.
[0182]
　(1) Antenna unit 110
　antenna unit 110 radiates into the space a signal output by the radio communication unit 120 as a radio wave. The antenna unit 110 converts the radio waves of space signal, and outputs the signal to the radio communication unit 120.
[0183]
　(2) wireless communication unit 120
　radio communication unit 120 transmits and receives signals. For example, wireless communication unit 120 transmits a downlink signal to the terminal device, it receives uplink signals from the terminal device.
[0184]
　(3) Network communication unit 130
　network communication unit 130 sends and receives information. For example, the network communication unit 130 transmits the information to other nodes, to receive information from other nodes. For example, the other nodes, including other base stations and a core network node.
[0185]
　(4) storage unit 140
　storage unit 140 temporarily or permanently storing a program and various data for the operation of the base station 100.
[0186]
　(5) processing unit 150
　processing unit 150 provides various functions of the base station 100. Processing unit 150 includes a transmission processing unit 151 and notification unit 153. The processing unit 150 may further include other components other than these components. That is, processor 150 may perform also the operation other than the operation of these components.
[0187]
　The transmission processing unit 151 performs processing relating to transmission of the data directed to the terminal device 200. Other, transmission processing unit 151 performs the whole processing of the above-mentioned base station (eNB). The notification unit 153 performs processing relating to the notification of information to the terminal apparatus 200. That is, the notification unit 153 performs notification processing in general above the base station (eNB), the terminal device.
[0188]
　Processing unit 150 can function as an example of a control unit of the present disclosure. Base station 100 to have a structure according, various processes related to the present embodiment, for example, allocation of resources to the terminal device 200, the notification to the terminal device 200 of the information about the allocated resource information from the terminal device 200 get, etc. it is possible to implement.
[0189]
　Next, referring to FIG. 18, an example of a configuration of a terminal apparatus 200 according to an embodiment of the present disclosure. Figure 18 is a block diagram showing an example of a configuration of a terminal apparatus 200 according to an embodiment of the present disclosure. Referring to FIG. 18, the terminal device 200 includes an antenna unit 210, radio communication unit 220, storage unit 230 and the processing unit 240.
[0190]
　(1) Antenna unit 210
　antenna unit 210 radiates into the space a signal output by the radio communication unit 220 as a radio wave. The antenna unit 210 converts the radio waves of space signal, and outputs the signal to the wireless communication unit 220.
[0191]
　(2) wireless communication unit 220
　radio communication unit 220 transmits and receives signals. For example, wireless communication unit 220 receives the downlink signal from the base station, transmits an uplink signal to the base station.
[0192]
　(3) storage unit 230
　storage unit 230 temporarily or permanently storing a program and various data for the operation of the terminal apparatus 200.
[0193]
　(4) processing unit 240
　processing unit 240 provides various functions of the terminal apparatus 200. Processing unit 240 includes an acquisition unit 241 and the reception processing unit 243. The processing unit 240 may further include other components other than these components. That is, the processing unit 240 may perform also the operation other than the operation of these components.
[0194]
　Acquisition unit 241 performs processing related to obtaining data transmitted from the base station 100. Reception processing unit 243 performs processing relating to reception of data acquisition unit 241 has acquired. Reception processing unit 243 performs the whole processing of the above-described terminal apparatus.
[0195]
　Processing unit 240 can function as an example of a control unit of the present disclosure. Terminal device 200 to have a structure according, various processes related to the present embodiment, for example, the reservation of resources, resource reservation, the transmission of data to another terminal device and the base station 100, or the like be performed It can become.
[0196]
　<2. Applications>
　technology according to the present disclosure is applicable to various products. For example, base station 100 may be implemented as a macro eNB or any type of eNB, such as small eNB (evolved Node B). Small eNB may pico eNB, such as micro eNB or Home (femto) eNB, or a eNB to cover smaller cells than macrocells. Alternatively, the base station 100 may be implemented as a base station for other types, such as NodeB or BTS (Base Transceiver Station). The base station 100 includes a main body (also referred to as a base station device) that controls the wireless communication, one or more RRH placed in a different location from the main body (Remote Radio Head) and may contain. Further, by different types of terminal to be described later to perform a temporary or semi-permanent base station function, it may operate as the base station 100.
[0197]
　In addition, for example, the terminal device 200, a smart phone, a tablet PC (Personal Computer), notebook PC, a portable game terminal, portable / dongle type mobile router or mobile terminal, such as a digital camera or a vehicle-mounted terminal such as a car navigation device, it may be implemented as. The terminal device 200 may be implemented as M2M (Machine To Machine) (also called MTC (Machine Type Communication) terminal) terminal that performs communications. Further, the terminal device 200, wireless communication module mounted on these terminals (e.g., an integrated circuit module consists of a single die) may be used.
[0198]
　<2.1. Applications for the base station Example>
　(first applied example)
　FIG. 19 is a block diagram showing a first example of a schematic configuration of an eNB of the technology according to the present disclosure may be applied. eNB800 has one or more antennas 810, and the base station apparatus 820. Each antenna 810 and base station apparatus 820 may be connected to each other via a RF cable.
[0199]
　Each antenna 810, a single or multiple antenna elements (e.g., a plurality of antenna elements of MIMO antennas) have, is used to send and receive radio signals by the base station apparatus 820. eNB800 has a plurality of antennas 810 as shown in FIG. 19, a plurality of antennas 810, for example, may correspond to a plurality of frequency bands eNB800 uses. Although in FIG. 19 shows an example in which ENB800 has a plurality of antennas 810, ENB800 may have a single antenna 810.
[0200]
　The base station apparatus 820 includes a controller 821, a memory 822, a network interface 823 and a wireless communication interface 825.
[0201]
　The controller 821 may be, for example, a CPU DSP, or to operate the various functions of the upper layer of the base station apparatus 820. For example, the controller 821 generates a data packet from the data in the signal processed by the wireless communication interface 825, and transfers the generated packet via the network interface 823. The controller 821, the data from the plurality of baseband processor generates the bundled packets by bundling the generated bundled packets may be transferred. The controller 821, radio resource management (Radio Resource Control), radio bearer control (Radio Bearer Control), mobility management (Mobility Management), executes the control such as the inflow control (Admission Control) or scheduling (Scheduling) Logical it may have a function. Further, the control may be performed in conjunction with the periphery of the eNB or the core network node. Memory 822 includes RAM and ROM, and stores a program executed, and various control data (e.g., terminal list, such as the transmission power data and scheduling data) by the controller 821.
[0202]
　Network interface 823 is a communication interface for connecting the base station apparatus 820 to the core network 824. Controller 821 via the network interface 823 may communicate with the core network node, or other eNB. In that case, the ENB800, the core network node, or other eNB, may be connected to one another by logical interfaces (e.g., S1 interface or X2 interface). Network interface 823 may be a wired communication interface, or a wireless communication interface for wireless backhaul. If the network interface 823 is a wireless communication interface, a network interface 823 may use a higher frequency band than the frequency band used for radio communication by the wireless communication interface 825.
[0203]
　Wireless communication interface 825, LTE supports either a cellular communication system such as (Long Term Evolution) or LTE-Advanced, via the antenna 810 to provide wireless connectivity to the terminal located in the cell of ENB800. Wireless communication interface 825 typically may include such baseband (BB) processor 826 and RF circuit 827. BB processor 826, for example, the encoding / decoding may be performed such as modulation / demodulation and multiplexing / demultiplexing, each layer (e.g., L1, MAC (Medium Access Control), RLC (Radio Link Control) and PDCP (Packet Data Convergence Protocol)) to perform various signal processing. BB processor 826, instead of the controller 821 may include some or all of the logical functions described above. BB processor 826, a memory for storing a communication control program may be a module including a processor and associated circuitry to execute the program, the function of BB processor 826 may be changeable by the update of the program good. Further, the module may be a card or a blade is inserted into the slot of the base station apparatus 820, or may be a chip mounted on said card or the blade. On the other hand, RF circuit 827, a mixer may include such as filters and amplifiers, for transmitting and receiving radio signals via an antenna 810.
[0204]
　Wireless communication interface 825 includes a plurality of BB processor 826 as shown in FIG. 19, a plurality of BB processor 826 may, for example, correspond to a plurality of frequency bands eNB800 uses. The wireless communication interface 825 includes a plurality of RF circuits 827 as shown in FIG. 19, a plurality of RF circuits 827 may correspond for example to a plurality of antenna elements. Although the wireless communication interface 825 in FIG. 19 shows an example including a plurality of BB processor 826 and a plurality of RF circuits 827, a wireless communication interface 825 includes a single BB processor 826 or a single RF circuit 827 But good.
[0205]
　In eNB800 shown in FIG. 19, one or more components (transmission processing unit 151 and / or the notification unit 153) included in the processing unit 150 described with reference to FIG. 17 is implemented in a wireless communication interface 825 it may be. Alternatively, at least some of these components may be implemented in the controller 821. As an example, ENB800 is part of a wireless communication interface 825 (e.g., BB processor 826) or the whole, and mounted / or module including a controller 821, even if the one or more components in the modules are mounted good. In this case, the module stores (in other words, a program for executing the operation of the one or more components to the processor) processor program for functioning as the one or more components, and the program may be an execution. As another example, a program for causing a processor as the one or more components are installed in ENB800, wireless communication interface 825 (e.g., BB processor 826) also and / or controller 821 executes the program good. As described above, ENB800 as a device comprising the one or more components may be the base station device 820 or the module is provided, a program for causing a processor as the one or more components are provided it may be. The readable recording medium recording the program may be provided.
[0206]
　Further, in eNB800 shown in FIG. 19, the radio communication unit 120 described with reference to FIG. 17, the radio communication interface 825 (e.g., RF circuitry 827) may be implemented in. The antenna unit 110 may be implemented in the antenna 810. The network communication unit 130 may be implemented in the controller 821 and / or network interface 823. The storage unit 140 may be implemented in the memory 822.
[0207]
　(Second applied example)
　FIG. 20 is a block diagram showing a second exemplary configuration of an eNB of the technology according to the present disclosure may be applied. eNB830 has one or more antennas 840, the base station apparatus 850, and RRH860. Each antenna 840 and RRH860 may be connected to each other via a RF cable. The base station apparatus 850 and RRH860 may be connected to one another by high-speed line such as an optical fiber cable.
[0208]
　Each antenna 840, a single or multiple antenna elements (e.g., a plurality of antenna elements of MIMO antennas) have, is used to send and receive radio signals by RRH860. eNB830 has a plurality of antennas 840 as shown in FIG. 20, a plurality of antennas 840, for example, may correspond to a plurality of frequency bands eNB830 uses. Although in FIG. 20 shows an example in which ENB830 has a plurality of antennas 840, ENB830 may have a single antenna 840.
[0209]
　The base station apparatus 850 includes a controller 851, a memory 852, a network interface 853, a wireless communication interface 855 and connection interface 857. Controller 851, a memory 852 and a network interface 853 is similar to the controller 821, a memory 822 and a network interface 823 described with reference to FIG. 19.
[0210]
　Wireless communication interface 855 supports any of the cellular communication system such as LTE or LTE-Advanced, via the RRH860 and antenna 840 to provide wireless connectivity to terminals located in a sector corresponding to RRH860. Wireless communication interface 855 typically may include such BB processor 856. BB processor 856, except that it is connected to the RF circuitry 864 of RRH860 through the connection interface 857 is similar to the BB processor 826 described with reference to FIG. 19. Wireless communication interface 855 includes a plurality of BB processor 856 as shown in FIG. 20, a plurality of BB processor 856 may, for example, correspond to a plurality of frequency bands eNB830 uses. Although the wireless communication interface 855 in FIG. 20 shows an example including a plurality of BB processor 856, a wireless communication interface 855 may comprise a single BB processor 856.
[0211]
　Connection interface 857 is an interface for base station apparatus 850 (the radio communication interface 855) connected to the RRH860. Connection interface 857 may be a communication module for communicating with the high-speed line which connects the base station apparatus 850 (wireless communication interface 855) and RRH860.
[0212]
　Further, RRH860 comprises a connection interface 861 and a wireless communication interface 863.
[0213]
　Connection interface 861 is an interface for connecting to the base station apparatus 850 RRH860 (wireless communication interface 863). Connection interface 861 may be a communication module for communicating with the high-speed line.
[0214]
　Wireless communication interface 863 sends and receives radio signals via an antenna 840. Wireless communication interface 863 may typically include an RF circuit 864. RF circuit 864, a mixer may include such as filters and amplifiers, for transmitting and receiving radio signals via an antenna 840. Wireless communication interface 863 includes a plurality of RF circuits 864 as shown in FIG. 20, a plurality of RF circuits 864 may correspond for example to a plurality of antenna elements. Although the wireless communication interface 863 in FIG. 20 shows an example including a plurality of RF circuits 864, a wireless communication interface 863 may comprise a single RF circuit 864.
[0215]
　In eNB830 shown in FIG. 20, one or more components (transmission processing unit 151 and / or the notification unit 153) included in the processing unit 150 described with reference to FIG. 17, the radio communication interface 855 and / or wireless it may be implemented in the communication interface 863. Alternatively, at least some of these components may be implemented in the controller 851. As an example, ENB830 is part of a wireless communication interface 855 (e.g., BB processor 856) or the whole, and mounted / or module including a controller 851, even if the one or more components in the modules are mounted good. In this case, the module stores (in other words, a program for executing the operation of the one or more components to the processor) processor program for functioning as the one or more components, and the program may be an execution. As another example, a program for causing a processor as the one or more components are installed in ENB830, wireless communication interface 855 (e.g., BB processor 856) also and / or controller 851 executes the program good. As described above, ENB830 as a device comprising the one or more components may be the base station device 850 or the module is provided, a program for causing a processor as the one or more components are provided it may be. The readable recording medium recording the program may be provided.
[0216]
　Further, in eNB830 shown in FIG. 20, for example, wireless communication unit 120 described with reference to FIG. 17, the radio communication interface 863 (e.g., RF circuitry 864) may be implemented in. The antenna unit 110 may be implemented in the antenna 840. The network communication unit 130 may be implemented in the controller 851 and / or network interface 853. The storage unit 140 may be implemented in the memory 852.
[0217]
　<2-2. Applications> about the terminal apparatus
　(first applied example)
　FIG. 21 is a block diagram showing an example of a schematic configuration of the smartphone 900 technology according to the present disclosure may be applied. Smartphone 900, processor 901, memory 902, storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, display device 910, a speaker 911, a wireless communication interface 912,1 one or more of the antenna switch 915 comprises one or more antennas 916, bus 917, battery 918 and the auxiliary controller 919.
[0218]
　The processor 901 may be, for example, a CPU or SoC (System on Chip), which controls the functions of the application layer and other layers of the smartphone 900. Memory 902 includes RAM and ROM, for storing programs and data executed by the processor 901. Storage 903 may include a storage medium such as a semiconductor memory or a hard disk. External connection interface 904 is an interface for connecting an external device such as a memory card or USB (Universal Serial Bus) device to a smart phone 900.
[0219]
　The camera 906 is, for example, an image pickup element such as CCD (Charge Coupled Device) or CMOS (Complementary Metal Oxide Semiconductor), and generates a captured image. Sensor 907 may include, for example, the positioning sensor, a gyro sensor, the sensor group, such as a geomagnetic sensor and an acceleration sensor. The microphone 908 converts a voice inputted to the smartphone 900 to the audio signal. Input device 909, for example, a touch sensor, a keypad for detecting a touch to the screen of the display device 910, a keyboard includes a button or switch, and accepts an operation or information input from a user. Display device 910 has a screen such as a liquid crystal display (LCD) or organic light emitting diode (OLED) display, and displays the output image of the smartphone 900. Speaker 911 converts the audio signal output from the smart phone 900 to the audio.
[0220]
　Wireless communication interface 912 supports any of the cellular communication system such as LTE or LTE-Advanced, which executes wireless communication. Wireless communication interface 912 typically may include such BB processor 913 and RF circuit 914. BB processor 913, for example, the encoding / decoding may be performed such as modulation / demodulation and multiplexing / demultiplexing, execute various signal processing for wireless communication. On the other hand, RF circuit 914, a mixer may include such as filters and amplifiers, for transmitting and receiving radio signals via an antenna 916. Wireless communication interface 912 may be a one-chip module that integrates BB processor 913 and RF circuit 914. Wireless communication interface 912 may include a plurality of BB processor 913 and a plurality of RF circuits 914 as shown in FIG. 21. Although the wireless communication interface 912 in FIG. 21 shows an example including a plurality of BB processor 913 and a plurality of RF circuits 914, a wireless communication interface 912 includes a single BB processor 913 or a single RF circuit 914 But good.
[0221]
　Further, the wireless communication interface 912, in addition to cellular communication systems, short-range wireless communication system, other types of wireless communication systems, such as the proximity wireless communication system or wireless LAN (Local Area Network) system may support, in this case, it may include a BB processor 913 and RF circuit 914 for each wireless communication system.
[0222]
　Each of the antenna switch 915, a plurality of circuits included in the wireless communication interface 912 (e.g., different circuits for wireless communication system) switches the connection destination of the antenna 916 between.
[0223]
　Each antenna 916, a single or multiple antenna elements (e.g., a plurality of antenna elements of MIMO antennas) have, is used to send and receive radio signals by the wireless communication interface 912. Smartphone 900 may have a plurality of antennas 916 as shown in FIG. 21. Although in FIG. 21 shows an example where the smartphone 900 has a plurality of antennas 916, the smartphone 900 may have a single antenna 916.
[0224]
　Moreover, the smartphone 900 may comprise an antenna 916 for each wireless communication system. In that case, the antenna switch 915 may be omitted from the configuration of the smartphone 900.
[0225]
　Bus 917, a processor 901, memory 902, storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, display device 910, a speaker 911, connects the wireless communication interface 912 and the auxiliary controller 919 to each other . Battery 918 via a power supply line partially indicated by broken lines in the figure, supplies power to each block of the smartphone 900 shown in FIG. 21. Auxiliary Controller 919, for example, in the sleep mode, to operate the required minimum functionality of the smartphone 900.
[0226]
　In the smartphone 900 shown in FIG. 21, one or more components (acquisition unit 241 and / or the reception processing unit 243) included in the processing unit 240 described with reference to FIG. 18 is implemented in a wireless communication interface 912 it may be. Alternatively, at least some of these components may be implemented in the processor 901 or the auxiliary controller 919. As an example, a smart phone 900, a portion of the wireless communication interface 912 (e.g., BB processor 913) or the whole, equipped with a module containing the processor 901, and / or the auxiliary controller 919, the one or more components in the module There may be implemented. In this case, the module stores (in other words, a program for executing the operation of the one or more components to the processor) processor program for functioning as the one or more components, and the program may be an execution. As another example, a program for causing a processor as the one or more components are installed on the smartphone 900, a wireless communication interface 912 (e.g., BB processor 913), a processor 901, and / or auxiliary controller 919 is the program may be an execution. As described above, may be provided smart phone 900 or the module is a device provided with the one or more components, the program may be provided for causing a processor as the one or more components. The readable recording medium recording the program may be provided.
[0227]
　Further, in a smart phone 900 shown in FIG. 21, for example, wireless communication unit 220 described with reference to FIG. 18, the radio communication interface 912 (e.g., RF circuitry 914) may be implemented in. The antenna unit 210 may be implemented in the antenna 916. The storage unit 230 may be implemented in the memory 902.
[0228]
　(Second applied example)
　FIG. 22 is a block diagram showing an example of a schematic configuration of the car navigation device 920 technology according to the present disclosure may be applied. Car navigation device 920, processor 921, memory 922, GPS (Global Positioning System) module 924, sensor 925, data interface 926, content player 927, a storage medium interface 928, an input device 929, display device 930, a speaker 931, a wireless communication an interface 933,1 one or more of the antenna switch 936,1 or more antennas 937 and battery 938.
[0229]
　The processor 921 may be, for example, a CPU or SoC, controls the navigation functions and other functions of the car navigation device 920. Memory 922 includes RAM and ROM, for storing programs and data executed by the processor 921.
[0230]
　GPS module 924 uses the GPS signal received from the GPS satellites, measures the position of the car navigation device 920 (e.g., latitude, longitude and altitude). Sensor 925 is, for example, a gyro sensor may include sensors such as a geomagnetic sensor, and pressure sensor. Data interface 926 is connected to, for example, vehicle network 941 through a terminal (not shown), we obtain the data generated by the vehicle, such as vehicle speed data.
[0231]
　Content player 927, storage medium to be inserted into the storage medium interface 928 (e.g., CD or DVD) to reproduce the content stored in the. Input device 929 may, for example, a touch sensor for detecting a touch on the screen of the display device 930 includes a button or switch, and accepts an operation or information input from a user. Display device 930 has a screen such as an LCD or OLED display, and displays an image of content navigation function or reproducing. Speaker 931 outputs sound of content navigation function or reproducing.
[0232]
　Wireless communication interface 933 supports any of the cellular communication system such as LTE or LTE-Advanced, which executes wireless communication. Wireless communication interface 933 typically may include such BB processor 934 and RF circuit 935. BB processor 934, for example, the encoding / decoding may be performed such as modulation / demodulation and multiplexing / demultiplexing, execute various signal processing for wireless communication. On the other hand, RF circuit 935, a mixer may include such as filters and amplifiers, for transmitting and receiving radio signals via an antenna 937. Wireless communication interface 933 may be a one-chip module that integrates BB processor 934 and RF circuit 935. Wireless communication interface 933 may include a plurality of BB processor 934 and a plurality of RF circuits 935 as shown in FIG. 22. Although the wireless communication interface 933 in FIG. 22 shows an example including a plurality of BB processor 934 and a plurality of RF circuits 935, a wireless communication interface 933 includes a single BB processor 934 or a single RF circuit 935 But good.
[0233]
　Further, the wireless communication interface 933, in addition to cellular communication systems, short-range wireless communication system may support other types of wireless communication systems, such as the proximity wireless communication system or wireless LAN system, in that case, the radio it may include a BB processor 934 and RF circuit 935 for each communication mode.
[0234]
　Each of the antenna switch 936, a plurality of circuits included in the wireless communication interface 933 (e.g., different circuits for wireless communication system) switches the connection destination of the antenna 937 between.
[0235]
　Each antenna 937, a single or multiple antenna elements (e.g., a plurality of antenna elements of MIMO antennas) have, is used to send and receive radio signals by the wireless communication interface 933. Car navigation device 920 may have a plurality of antennas 937 as shown in FIG. 22. Although the car navigation system 920 in FIG. 22 shows an example having a plurality of antennas 937, car navigation device 920 may have a single antenna 937.
[0236]
　Furthermore, car navigation device 920 may comprise an antenna 937 for each wireless communication system. In that case, the antenna switch 936 may be omitted from the configuration of the car navigation device 920.
[0237]
　Battery 938, via a feed line partially indicated by broken lines in the figure, supplies power to each block of the car navigation device 920 shown in FIG. 22. Further, the battery 938 accumulates electric power fed from the vehicle side.
[0238]
　In car navigation device 920 shown in FIG. 22, one or more components (acquisition unit 241 and / or the reception processing unit 243) included in the processing unit 240 described with reference to FIG. 18, in a wireless communication interface 933 it may be implemented. Alternatively, at least some of these components may be implemented in the processor 921. As an example, a car navigation device 920, a portion of the wireless communication interface 933 (e.g., BB processor 934) equipped with a module that contains the or all and / or processor 921, the one or more components are mounted in the module it may be. In this case, the module stores (in other words, a program for executing the operation of the one or more components to the processor) processor program for functioning as the one or more components, and the program may be an execution. As another example, a program for causing a processor as the one or more components are installed on the car navigation device 920, a wireless communication interface 933 (e.g., BB processor 934) and / or processor 921 executing the program it may be. As described above, it may be a car navigation device 920 or the module is provided as an apparatus provided with the one or more components, be provided a program for causing a processor as the one or more components good. The readable recording medium recording the program may be provided.
[0239]
　Further, the car navigation apparatus 920 shown in FIG. 22, for example, wireless communication unit 220 described with reference to FIG. 18, the radio communication interface 933 (e.g., RF circuitry 935) may be implemented in. The antenna unit 210 may be implemented in the antenna 937. The storage unit 230 may be implemented in the memory 922.
[0240]
　Further, the technology according to the present disclosure includes one or more blocks of the car navigation device 920 described above, the vehicle network 941 may be implemented as an in-vehicle system (or vehicle) 940 that includes a vehicle-side module 942. That is, the in-vehicle system (or vehicle) 940 may be provided as a device including an acquisition unit 241 and / or the reception processing unit 243. Vehicle module 942, the vehicle speed, generates a vehicle data such as engine speed or failure information, and outputs the generated data to the vehicle network 941.
[0241]
　<3. Summary>
　According to this embodiment of the present disclosure has been described and illustrated, as described below, a terminal apparatus for performing inter-device communication, such as a V2X communication, efficient, resources using the sensing Selectable terminal device, and a base station that provides resources to such assistance is provided.
[0242]
　Each step in the process of the device herein is performed, not necessarily performed in time series along the order described in the sequence diagrams or flowchart. For example, each step in the processing of each device is executed may be processed in an order different from that described in the flowchart, it may be processed in parallel.
[0243]
　Further, CPU incorporated in the device, the hardware such as ROM and RAM, a computer program for exhibiting the structure and function equivalent of the apparatus described above can also be created. The storage medium storing the computer program can also be be provided. Furthermore, each functional block shown in the functional block diagram are configured in hardware or a hardware circuit, thereby realizing a series of processes by hardware or a hardware circuit.
[0244]
　Having described in detail preferred embodiments of the present disclosure with reference to the accompanying drawings, the technical scope of the present disclosure is not limited to such an example. It would be appreciated by those skilled in the art of the present disclosure, within the scope of the technical idea described in the claims, it is intended to cover various modifications, combinations, these for it is also understood to belong to the technical scope of the present disclosure.
[0245]
　The effects described herein are not limiting be those that only illustrative or exemplary. In other words, the technology according to the present disclosure, together with the above effects, or instead of the above effects, can exhibit the apparent other effects to those skilled in the art from the description herein.
[0246]
　Also within the scope of the present disclosure the following configurations.
(1)
　allocates a resource region to which the terminal apparatus for performing inter-system communication can be selected resources, a control unit that provides information about the range of the sensing of the resource region to the terminal device, the communication device.
(2)
　the control unit sets the range of the sensing in accordance with the type of traffic that the terminal device to communicate with the resource, the communication apparatus according to (1).
(3)
　the control unit sets the range of the sensing in accordance with the priority of traffic which the terminal device communicates with the resource, the communication apparatus according to (1).
(4)
　the control unit sets the range of the sensing in accordance with the moving speed of the terminal device, the communication device according to any one of (1) to (3).
(5)
　the control unit sets the range of the sensing in accordance with the position information of the terminal device, the communication device according to any one of (1) to (4).
(6)
　the control unit sets the range of the sensing in accordance with the type of the terminal device, the communication device according to any one of (1) to (5).
(7)
　the control unit sets the range of the sensing in accordance with the resource usage Sidelink, communication apparatus according to any one of (1) to (6).
(8)
　Wherein the control unit sets the range of the sensing for each of the terminal device, the communication device according to any one of (1) to (7).
(9)
　the control unit sets the range of the sensing in common to all of the terminal device, the communication device according to any one of (1) to (7).
(10)
　The control unit performs grouping for each predetermined range of the resource area, the communication apparatus according to any one of (1) to (9).
(11)
　the control unit provides information for implementing the resource hopping to the terminal device in the grouped range communication device according to (10).
(12)
　the control unit, the terminal device provides information about the distance to the transmission of information after selecting the resource, a communication device according to any one of (1) to (10).
(13)
　the control unit sets the interval in accordance with the type of traffic that the terminal device to communicate with the resource, the communication device according to (12).
(14)
　the control unit sets the interval in accordance with the priority of traffic which the terminal device communicates with the resource, the communication device according to (12).
(15)
　the control unit sets the interval in accordance with the moving speed of the terminal device, the communication device according to any one of (12) to (14).
(16)
　wherein the control unit sets the interval in accordance with the position information of the terminal device, the communication device according to any one of (12) to (15).
(17)
　the control unit sets the interval in accordance with the type of the terminal device, the communication device according to any one of (12) to (16).
(18)
　wherein the control unit sets the interval for each of the terminal device, the communication device according to any one of (12) to (17).
(19)
　the control unit sets the interval in common to all of the terminal device, the communication device according to any one of (12) to (17).
(20)
　to select a resource from the resource region allocated by the base station, in performing inter-device communication using the selected resources, the control unit for determining in accordance with a range of sensing of the resource area to the situation comprising a communication device.
(21)
　the control unit determines a range of said sensing based on information provided from the base station, the communication apparatus according to (20).
(22)
　the control unit is determined according to the situation of the interval from the selected resources to the transmission of information based on the result of the sensing, communication apparatus according to (20) or (21).
(23)
　Wherein the control unit determines the interval based on the information provided from the base station, the communication apparatus according to (23).
(24)
　The control unit transmits information of the priority of information as the information communication apparatus according to (22) or (23).
(25)
　The control unit transmits the transmission source information of the information as the information, the communication device according to any one of (22) to (24).
(26)
　The control unit transmits information about the transmission power of information as the information communication apparatus according to any one of (22) to (25).
(27)
　wherein the control unit notifies the information about reservations of the resource to another device using information of the interval, the communication apparatus according to any one of (22) to (26).
(28)
　wherein the control unit extends the range of the sensing if could not ensure the result resource of the sensing, communication apparatus according to any one of (20) to (27).
(29)
　wherein, when unable to secure the resources even if the range of the sensing predetermined amount increasing, redetermined according to the range of sensing of the resource regions to the situation, according to (28) communication device.
(30)
　the control unit, when a predetermined number of times to re-determine the range of the sensing, reporting to the base station, the communication apparatus according to (29).
(31)
　the control unit, a threshold for selecting the resource by energy sensing, is changed based on the transmission power information when between the device communication, the (20) - as defined in any one of (30) Communication device.
(32)
　allocates a resource region to which the terminal apparatus for performing inter-system communication can be selected resource includes providing information about the range of the sensing of the resource region to the terminal device, a communication method.
(33)
　to select a resource from the resource region allocated by the base station, in performing inter-device communication using the selected resource, determining in accordance with a range of sensing of the resource area to the situation including, communication method.
(34)
　allocates a resource region to which the terminal apparatus for performing inter-system communication can be selected resources to execute the information about the range of the sensing of the resource regions to the computer to provide to the terminal device, the computer program.
(35)
　to select a resource from the resource region allocated by the base station, in performing inter-device communication using the selected resource, determining in accordance with a range of sensing of the resource area to the situation to be executed by a computer, the computer program.
(36)
　Select the resource from the resource region allocated by the base station, in performing inter-device communication using the selected resources, any of the parameters relating to the notification packet reservation period from the base station or sensing mode, using one or more, and a control unit that specifies a parameter related to sensing, communication device.
(37)
　the packet reservation related parameters are defined as a set of parameter i, the communication apparatus according to (36).
(38)
　The parameter i is a component of a packet reservation period (P * i), P is a fixed value and the underlying, i is the configurable parameters from a network, the communication according to (37) apparatus.
(39)
　parameters relating to the sensing mode is defined as a parameter alpha, the communication apparatus according to any one of (37) or (38).
(40)
　using the parameter alpha, determines to use either the parameters a plurality of setting methods relating sensing in the same i, the communication apparatus according to (39).
(41)
　a parameter related to the sensing, the starting position of the sensing window, including sensing window size, sensing frequency band, sensing the resource pool, the number of the sensing window, the communication apparatus according to (36).
(42)
　Wherein, the notification packet reservation period from the base station, the network of CBR (Channel Busy Ratio), relates to the sensing by using any one or more of the parameters representing the target area to be a parameter or sensing about packet reselection setting the parameters, communication apparatus according to (36).
(43)
　wherein the control unit after sensing more than a predetermined sensing times, resource utilization was calculated in the candidate default transmission resources if the usage rate is equal to or greater than a predetermined value, a new sensing candidate sensing is performed by setting the communication apparatus according to (36).
(44)
　wherein the control unit after sensing more than a predetermined sensing times, resource utilization was calculated in the candidate default transmission resource, the usage rate may stop sensing becomes more than a predetermined value the communication apparatus according to (36).
(45)
　a threshold θ of the threshold β and utilization of the sensing times are set from the network side, communication apparatus according to (43).
(46)
　the control unit sets a new sensing candidates, to complete the sensing, selecting a transmission resource based on all of the sensing result, the communication apparatus according to (43).
(47)
　the control unit, the randomly set a new sensing candidate communication apparatus according to (46).
(48)
　Wherein the control unit from said network side receives the settings of the new sensing candidate communication apparatus according to (46).
(49)
　wherein, when selecting a transmission resource and discontinue sensing, and resources available in the default transmission resource candidates based on the sensing result, all of the resources other than transmission resource candidates as selection candidates, select to, the communication apparatus according to (43).
(50)
　to select a resource from the resource region allocated by the base station, in performing inter-device communication using the selected resources, the notified packet reservation period from the base station or the parameter related to the sensing mode, It includes setting parameters concerning sensing using any one or more of the communication control method.
DESCRIPTION OF SYMBOLS
[0247]
　100 terminal device
　200 base station

claims
[Requested item 1]
　It allocates a resource region to which the terminal can select resources to perform the inter-device communication, and a control unit that provides information about the range of the sensing of the resource region to the terminal device, the communication device.
[Requested item 2]
　Wherein the control unit sets the range of the sensing in accordance with the type of traffic that the terminal device to communicate with the resource, the communication apparatus according to claim 1.
[Requested item 3]
　Wherein the control unit sets the range of the sensing in accordance with the priority of traffic which the terminal device communicates with the resource, the communication apparatus according to claim 1.
[Requested item 4]
　Wherein the control unit sets the range of the sensing in accordance with the moving speed of the terminal device, the communication device according to claim 1.
[Requested item 5]
　Wherein the control unit sets the range of the sensing in accordance with the position information of the terminal device, the communication device according to claim 1.
[Requested item 6]
　Wherein the control unit sets the range of the sensing in accordance with the type of the terminal device, the communication device according to claim 1.
[Requested item 7]
　Wherein the control unit sets the range of the sensing in accordance with the resource usage Sidelink, communication apparatus according to claim 1.
[Requested item 8]
　Wherein the control unit sets the range of the sensing for each of the terminal device, the communication device according to claim 1.
[Requested item 9]
　Wherein the control unit sets a range of common to said sensing to all of the terminal device, the communication device according to claim 1.
[Requested item 10]
　The control unit performs grouping for each predetermined range of the resource area, the communication apparatus according to claim 1.
[Requested item 11]
　The control unit provides information for implementing the resource hopping to the terminal device in the grouped range communication apparatus according to claim 10.
[Requested item 12]
　Wherein the control unit, the terminal device provides information about the distance to the transmission of information after selecting the resource, a communication device according to claim 1.
[Requested item 13]
　Wherein the control unit sets the interval in accordance with the type of traffic that the terminal device to communicate with the resource, the communication apparatus according to claim 12.
[Requested item 14]
　Wherein the control unit, the terminal device sets the interval in accordance with the priority of the traffic that communicates using the resource, the communication apparatus according to claim 12.
[Requested item 15]
　Wherein the control unit sets the interval in accordance with the moving speed of the terminal device, the communication device according to claim 12.
[Requested item 16]
　Wherein the control unit sets the interval in accordance with the position information of the terminal device, the communication device according to claim 12.
[Requested item 17]
　Wherein the control unit sets the interval in accordance with the type of the terminal device, the communication device according to claim 12.
[Requested item 18]
　Wherein the control unit sets the interval for each of the terminal device, the communication device according to claim 12.
[Requested item 19]
　Wherein the control unit sets the interval in common to all of the terminal device, the communication device according to claim 12.
[Requested item 20]
　Select the resource from the resource region allocated by the base station, in performing inter-device communication using the selected resource, a control unit for determining in accordance with a range of sensing of the resource regions to the situation, Communication device.
[Requested item 21]
　Wherein the control unit determines a range of said sensing based on information provided from the base station communication apparatus according to claim 20.
[Requested item 22]
　Wherein the control unit is determined according to the situation the interval from the selected resources to the transmission of information based on the result of the sensing, communication apparatus according to claim 20.
[Requested item 23]
　Wherein the control unit determines the interval based on the information provided from the base station, the communication apparatus according to claim 22.
[Requested item 24]
　Wherein the control unit transmits the information of the priority information as the information communication apparatus according to claim 22.
[Requested item 25]
　Wherein the control unit transmits the transmission source information of the information as the information communication apparatus according to claim 22.
[Requested item 26]
　The control unit transmits information about the transmission power of information as the information communication apparatus according to claim 22.
[Requested item 27]
　Wherein the control unit notifies the information about reservations of the resource to another device using information of the interval, the communication apparatus according to claim 22.
[Requested item 28]
　Wherein the control unit extends the range of the sensing if could not ensure the result resource of the sensing, communication apparatus according to claim 20.
[Requested item 29]
　Wherein, when unable to secure the resources even if the range of the sensing predetermined amount increasing, redetermined according to the range of sensing of the resource regions to the situation, the communication apparatus according to claim 28.
[Requested item 30]
　The control unit, when a predetermined number of times to re-determine the range of the sensing, reporting to the base station, the communication apparatus according to claim 28.
[Requested item 31]
　Wherein the control unit, a threshold for selecting the resource by energy sensing, is changed based on the transmission power information when between the device communication, the communication apparatus according to claim 20.
[Requested item 32]
　Allocates a resource region to which the terminal can select resources to perform the inter-device communication includes providing information about the range of the sensing of the resource region to the terminal device, a communication method.
[Requested item 33]
　Select the resource from the resource region allocated by the base station, in performing inter-device communication using the selected resource includes determining according to a range of sensing of the resource regions to the situation, the communication Method.
[Requested item 34]
　It allocates a resource region to which the terminal can select resources to perform the inter-device communication, to execute the information about the range of the sensing of the resource regions to the computer to provide to the terminal device, the computer program.
[Requested item 35]
　Select the resource from the resource region allocated by the base station, performed in performing inter-device communication using the selected resource, determining in accordance with a range of sensing of the resource area to the situation in the computer make, the computer program.
[Requested item 36]
　Select the resource from the resource region allocated by the base station, in performing inter-device communication using the selected resources, any of the parameters relating to the notification packet reservation period from the base station or sensing mode, using one or more, and a control unit that specifies a parameter related to sensing, communication device.
[Requested item 37]
　The packet reservation related parameters are defined as a set of parameter i, the communication apparatus according to claim 36.
[Requested item 38]
　The parameter i is a component of a packet reservation period (P * i), P is a fixed value and the underlying, i is a parameter that can be set from the network, the communication device according to claim 37.
[Requested item 39]
　Parameters related to the sensing mode is defined as a parameter alpha, the communication apparatus according to claim 37.
[Requested item 40]
　Using the parameter alpha, decides to use either a plurality of setting parameters for sensing in the same i, the communication apparatus according to claim 39.
[Requested item 41]
　Parameters related to the sensing, the starting position of the sensing window, including sensing window size, sensing frequency band, sensing the resource pool, the number of the sensing window, the communication apparatus according to claim 36.
[Requested item 42]
　Wherein, the notification packet reservation period from the base station, the network of CBR (Channel Busy Ratio), relates to the sensing by using any one or more of the parameters representing the target area to be a parameter or sensing about packet reselection setting the parameters, communication apparatus according to claim 36.
[Requested item 43]
　Wherein the control unit after sensing more than a predetermined sensing times, resource utilization was calculated in the candidate default transmission resources if the usage rate is equal to or greater than a predetermined value, and set a new sensing candidates performing sensing Te, the communication apparatus according to claim 36.
[Requested item 44]
　Wherein the control unit after sensing more than a predetermined sensing times, resource utilization was calculated in the candidate default transmission resource, the usage rate may stop sensing becomes more than a predetermined value, claim the communication apparatus according to 36.
[Requested item 45]
　Threshold θ threshold β and utilization of the sensing times are set from the network side, communication device according to claim 43.
[Requested item 46]
　Wherein the control unit sets a new sensing candidates, to complete the sensing, selecting a transmission resource based on all of the sensing result, the communication apparatus according to claim 43.
[Requested item 47]
　Wherein the control unit sets the new sensing candidate randomly communication apparatus according to claim 46.
[Requested item 48]
　Wherein the control unit receives the setting of the new sensing candidates from the network side, communication device according to claim 46.
[Requested item 49]
　Wherein, when selecting a transmission resource and discontinue sensing, and resources available in the default transmission resource candidates based on the sensing result, all of the resources other than transmission resource candidates as selection candidates is selected, wherein the communication apparatus according to claim 43.
[Requested item 50]
　Select the resource from the resource region allocated by the base station, in performing inter-device communication using the selected resources, any of the parameters relating to the notification packet reservation period from the base station or sensing mode, It includes setting parameters concerning sensing using one or more communication control method.