The present disclosure, the terminal apparatus, a method and a recording medium.
BACKGROUND
[0002]
　In recent years, IoT (Internet of Things) related development has been actively conducted. In IoT, for performing information exchange various things are connected to a network, wireless communication has become an important technical theme. Therefore, the 3GPP (Third Generation Partnership Project), such as MTC (Machine Type Communication) and NB-IoT (Narrow Band IoT), a small packet, standardization of IoT for communication to achieve low power consumption or low cost is performed there.
[0003]
　In IoT for communication, it is desirable that a wide coverage as much as possible low power consumption is ensured. However, typically, consumption since between the power and coverage have a trade-off relationship, an attempt to secure a wide coverage, inevitably increasing number power consumption. Therefore, as one of techniques for both low power consumption and wide coverage, relay of communication by the relay terminal has been studied.
[0004]
　For example, in Patent Document 1, in an LTE-based access network, when the terminal apparatus performs communication with a base station via a relay terminal, a technique for selecting the appropriate relay terminal of the relay terminal candidate It has been disclosed.
CITATION
Patent Document
[0005]
Patent Document 1: JP-T 2016-521076 Patent Publication
Summary of the Invention
Problems that the Invention is to Solve
[0006]
　However, the techniques disclosed in such Patent Document 1 is still day shallower from being developed, it can not be said technique for utilizing a relay terminal is sufficiently proposed in various aspects. For example, techniques for selecting a communication path more flexibly is also one of those that are not sufficiently proposed.
[0007]
　Therefore, in this disclosure, the terminal device proposes a more flexible to be capable of selecting mechanism communication path between the base station.
Means for Solving the Problems
[0008]
　According to the present disclosure, whether any of the base station or relay terminal and the destination terminal device comprising a processing unit determines for each packet depending on whether a predetermined condition is satisfied is provided.
[0009]
　Further, according to the present disclosure, a terminal device, another terminal to determine which base station or the terminal device or a destination for each packet depending on whether a predetermined condition is satisfied the packet received from the device, the processing unit for relaying to the base station, the terminal device comprising a are provided.
[0010]
　Further, the method according to the present disclosure, that whether either of the base station or relay terminal and the destination, determining for each packet depending on whether a predetermined condition is satisfied, executed by a processor comprising There is provided.
[0011]
　Further, according to the present disclosure, a method performed by a terminal device, either base station or the terminal device or a destination for each packet depending on whether a predetermined condition is satisfied a packet received from another terminal apparatus to determine, to relay to the base station,
the method comprising is provided.
[0012]
　Further, according to the present disclosure, a computer, or to any of the base station or relay terminal and the destination, in order to function as a processing unit determines for each packet depending on whether a predetermined condition is satisfied recording medium on which the program is recorded is provided.
[0013]
　Further, according to the present disclosure, determining the computer to the terminal device and the control object, so as to select one of the transmission destination base station or the terminal device, for each packet depending on whether a predetermined condition is satisfied the to the received other terminal apparatus from the terminal device packet, the terminal device by the processing unit for relaying to the base station, a recording medium having a program recorded thereon for functioning as is provided.
Effect of the invention
[0014]
　According to the present disclosure described above, a mechanism capable terminal device selects a communication path more flexible between a base station is provided. 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
[0015]
Is a diagram showing an example of the overall configuration of a system according to FIG. 1 embodiment.
Is a block diagram illustrating an example of FIG. 2 of the remote terminal according to the present embodiment configuration.
3 is a block diagram showing an example of a configuration of a relay terminal according to the present embodiment.
4 is a sequence diagram showing an example of the flow of uplink communication processing system according to the present embodiment.
5 is a diagram for explaining an example of a relay terminal discovery process according to the present embodiment.
6 is a diagram for explaining an example of a relay terminal discovery process according to the present embodiment.
7 is a diagram for explaining an example of a transmission path switching process according to the present embodiment.
8 is a diagram for explaining an example of a transmission path switching process according to the present embodiment.
9 is a sequence diagram showing an example of the flow of the bearer reuse process executed in the system according to the present embodiment.
Is a block diagram illustrating an example of FIG. 10 schematic configuration of a smart phone.
11 is a block diagram showing an example of a schematic configuration of a car navigation system.
DESCRIPTION OF THE INVENTION
[0016]
　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.
[0017]
　The description will be made in the following order.
　　1. Configuration example
　　　1.1. Overall structure
　　　1.2. Configuration of the remote terminal Example
　　　1.3. The configuration of the relay terminal Example
　　2. Processing of flow
　　3. Each processing details of
　　　3.1. Relay terminal discovery process
　　　3.2. Transmission path switching
　　　3.3. Relay communication
　　　3.3.1. Bearer
　　　3.3.2. Burst transmission
　　　3.4. Incentive calculation
　　4. Application Example
　　5. Summary
[0018]
　<< 1. Configuration example >>
　First, referring to FIG. 1, illustrating the overall configuration of a system according to an embodiment of the present disclosure.
[0019]
　<1.1. Overall Configuration>
　FIG. 1 is a diagram showing an example of the overall configuration of a system 1 according to this embodiment. As shown in FIG. 1, the system 1, the base station 100 includes a terminal device 200, the terminal apparatus 300, a core network (Core Network) 20, and PDN (Packet Data Network) 30.
[0020]
　The base station 100 may operate the cell 11, to provide wireless service to one or more terminal devices located inside the cell 11. For example, the base station 100 provides wireless service to each terminal device 200 and the terminal device 300. Cell 11 may be operated in accordance with any wireless communication system such as, for example, LTE or NR (New Radio). The base station 100 is connected to the core network 20. The core network 20 is connected to the PDN30.
[0021]
　The core network 20, for example, MME (Mobility Management Entity), S-GW (Serving gateway), P-GW (PDN gateway), may include a PCRF (Policy and Charging Rule Function) and HSS (Home Subscriber Server). MME is a control node handling the signal of the control plane, manages the movement status of the terminal device. S-GW is a control node handling the signal of the user plane, a gateway device for switching the transfer route of user data. P-GW is a control node handling the signal of the user plane, a gateway device to which the connection point between the core network 20 and PDN30. PCRF is a control node for performing control related to policy and charging such QoS (Quality of Service) for the bearer. The HSS handles subscriber data, a control node to service control.
[0022]
　Terminal device 200 and the terminal device 300, base station 100 and wireless communication under the control of the base station 100. Terminal device 200 and the terminal device 300 is a so-called user terminal: it may be a (UE User Equipment). For example, the terminal apparatus 200 and terminal apparatus 300 sends an uplink signal to the base station 100, receives downlink signals from base station 100. Thus, to communicate without passing through the other apparatus between the base station 100, it referred to directly communicates with.
[0023]
　Here, the terminal device 300, relays the communication to or other device from another device (i.e., relays) has a function of. For example, as shown in FIG. 1, terminal device 300, an uplink signal to the base station 100 receives from the terminal apparatus 200 is transferred to the base station 100, the downlink signal to the terminal device 200 from the base station 100 It receives and transfers to the terminal apparatus 200. Thus, to communicate via the other device with the base station 100, also referred to as relay communication. In FIG. 1, one terminal apparatus 300 showing an example of relaying a relay communication, two or more terminal devices 300 may relay the relay communication.
[0024]
　Hereinafter, the terminal unit 300 having the relay function referred to as a relay terminal, referred to the source or the terminal device 200 to send the downlink signal of the uplink signal with the remote terminal. Remote terminal 200 is, for example, IoT device for performing low frequency communications. Additional remote terminal 200, a smart phone, it may be a vehicle terminal, or drone like. Similarly relay terminal 300, for example, relay-only device, IoT device, a smart phone, may be implemented as an in-vehicle terminal or drone like.
[0025]
　In this specification, it will be described in particular for the direct communication and relay communication according to the transmission of uplink signals from the relay terminal 300.
[0026]
　Hereinafter, with reference to FIGS. 2 and 3, illustrating a functional configuration example of the remote terminal 200 and the relay terminal 300. Incidentally, the distinction between remote terminal 200 and the relay terminal 300 is a matter of convenience, one terminal device, if also operate as a remote terminal, may also operate as a relay terminal. In the following, the functional configuration example of a terminal device when operating as a remote terminal, a functional configuration example of a terminal device when operating as a relay terminal, will be described respectively.
[0027]
　<1.2. Configuration Example> remote terminals
　2 is a block diagram showing an example of a configuration of the remote terminal 200 according to the present embodiment. Referring to FIG. 2, the remote terminal 200 comprises an antenna section 210, radio communication unit 220, storage unit 230 and the processing unit 240.
[0028]
　(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.
[0029]
　(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.
[0030]
　In the present embodiment, the wireless communication unit 220 transmits an uplink signal to the base station 100 to base station 100 or relay terminal 300 receives downlink signals from base station 100 from the base station 100 or relay terminal 300 .
[0031]
　(3) storage unit 230
　storage unit 230 temporarily or permanently storing a program and various data for the operation of the remote terminal 200.
[0032]
　(4) processing unit 240
　processing unit 240 provides various functions of the remote terminal 200. Processing unit 240 includes a discovery unit 241, determination unit 243 and the transmission processing unit 245. The discovery unit 241 performs processing for finding a relay terminal 300. Determination unit 243 performs processing for determining the one of the base station 100 or relay terminal 300 and the destination of the packet. The transmission processing unit 245, to the destination according to the determination result by the determination unit 243 performs a process of transmitting a packet to be determined.
[0033]
　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. Discovery unit 241, for each of the functions of the determination unit 243 and the transmission processing unit 245 will be described in detail later.
[0034]
　<1.3. Configuration Example> the relay terminal
　3 is a block diagram showing an example of a configuration of a relay terminal 300 according to this embodiment. Referring to FIG. 3, a relay terminal 300 includes an antenna unit 310, radio communication unit 320, storage unit 330 and the processing unit 340.
[0035]
　(1) Antenna 310
　Antenna 310 radiates into the space the signal output by the radio communication unit 320 as a radio wave. The antenna unit 310 converts the radio waves of space signal, and outputs the signal to the wireless communication unit 320.
[0036]
　(2) wireless communication unit 320
　wireless communication unit 320 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.
[0037]
　In the present embodiment, the wireless communication unit 320 transfers to the base station 100 receives the uplink signal to the base station 100 from the remote terminal 200 receives downlink signals to the remote terminal 200 from the base station 100 It may transfer to the remote terminal 200.
[0038]
　(3) storage unit 330
　storage unit 330 temporarily or permanently storing a program and various data for the operation of the relay terminal 300.
[0039]
　(4) processing unit 340
　processing unit 340 provides various functions of the relay terminal 300. Processing unit 340 includes a discovery unit 341, and a relay processing unit 343. The discovery unit 341 performs processing for finding remote terminal 200. Relay processing unit 343 performs processing for relaying the packet received from the remote terminal 200 to base station 100.
[0040]
　The processing unit 340 may further include other components other than these components. That is, the processing unit 340 may perform also the operation other than the operation of these components. For each of the functions of the discovery unit 341 and a relay processing unit 343 will be described in detail later.
[0041]
　<< 2. Flow of Process >>
　Next, with reference to FIG. 4, an example of the flow of uplink communication processing system 1 according to this embodiment. Figure 4 is a sequence diagram showing an example of the flow of uplink communication processing system 1 according to this embodiment. This sequence, the base station 100, remote terminal 200, relay terminal 300 and PCRF is involved.
[0042]
　First, the remote terminal 200 and base station 100 sets up the link (step S102). Then, the remote terminal 200, transmits traffic (i.e., data to be transmitted) occurs (step S104), and performs the relay terminal discovery process to discover relay terminal 300 (step S106). Then, the remote terminal 200 performs condition determination about the transmission path switching condition for each packet to be transmitted (step S108).
[0043]
　Remote terminal 200, when determining the base station 100 as a transmission destination, and transmits the packet to be determined to the base station 100 (step S110).
[0044]
　Meanwhile, the remote terminal 200 has determined the relay terminal 300 as the destination to set up a link with the relay terminal 300, and transmits the packet to be determined the relay terminal 300 (step S112). Then, the relay terminal 300 transfers the packet received from the remote terminal 200 to base station 100 (step S114). Thereafter, the base station 100 transmits the relay information is information about a relay packet by the relay terminal 300 to PCRF (step S116). Then, PCRF based on the received relay information to calculate the incentive applied to the relay terminal 300 (step S118).
[0045]
　<< 3. Each processing details >>
　below, with reference to FIG. 4 illustrating details of the processes described above.
[0046]
　<3.1. Relay terminal discovery process>
　In the relay terminal discovery process, the remote terminal 200 (e.g., found 241) and a relay terminal 300 (e.g., found 341) performs processing for finding each other. The following describes the four types of discovery process as an example.
[0047]
　(1) The first method
　in the first method, the relay terminal 300 first discovery signal (hereinafter, simply referred to as discovery signal) sends and receives the remote terminal 200.
[0048]
　Discovery signal transmitting side of the operation of the
　relay terminal 300 (e.g., found 341) is a remote terminal 200 transmits a discovery signal for discovering relay terminal 300. Thus, the relay terminal 300 can notify its presence to the remote terminal 200. The transmission of the discovery signal may be realized by the discovery communication side links. Discovery Communication here may be a discovery communication type 1 3GPP Release 12, may be a discovery communication type 2. The discovery communications here may be either discovery communication mode A or mode B.
[0049]
　　- transmission trigger
　relay terminal 300 is always (i.e., periodically) may transmit the discovery signal may transmit a discovery signal at a predetermined timing. In terms of power consumption, the discovery signal is limited to a predetermined period of time is desired to be transmitted.
[0050]
　Transmission trigger discovery signal is variously considered. For example, transmission trigger of the discovery signal may be determined relay terminal 300 itself, the network side (e.g., base station 100) may be set or from the application layer. Further, the relay terminal 300, the detection of the signal from the remote terminal 200 may be the transmission trigger discovery signal.
[0051]
　　- Resource
　relay terminal 300 in a predetermined resources configured to transmit a discovery signal. For example, the relay terminal 300, using the selected resource (frequency resource and / or time resources) from the configured resource pools set or pre-terminal from the base station 100 transmits a discovery signal. By using a predetermined resource, it becomes possible to facilitate the monitoring of the discovery signal at the remote terminal 200.
[0052]
　　- The contents of the discovery signal
　discovery signal relay terminal 300 transmits includes at least one or more of the following information.
　　· The identification information of the relay terminal 300
　　buffer information relay terminal 300
　　Battery information relay terminal 300
　　capability information (battery capacity of relay terminal 300, the buffer memory size, CPU processing capability, can accommodate the remote terminal number, RF configuration, Full Duplex communication capability) such as
　　information indicating the relay compatible level
　　　(communication quality, or QoS, etc.)
　　mobility information relay terminal 300
　　location information of the relay terminal 300
　　　(latitude and longitude information indicating the presence position or the existence range zone information) indicating
　　relay terminal 300 monitoring resource pool information
　　　(discovery signal information) about the resource pool that is used to send
　　the priority information relay terminal 300
　　priority information of a packet relay terminal 300
　　of the relay terminal 300 handling traffic Click information
　　number of lines that relay terminal 300 can communicate directly with base station 100, line type
[0053]
　Note that the number of lines that can communicate directly with the base station 100 refers to the number of backup line is information for grasping either have how the connection possibilities of the network. For example, the remote terminal 200, if the relay terminal 300 does not have only backup line one line, it is determined that vulnerable backup lines, preferentially the relay communication via a direct communication or the relay terminal 300 Relay terminal 300 other than performed. As the line type, UMTS (Universal Mobile Telecommunications System) or E-UTRA (Evolved Universal Terrestrial Radio Access) and the like.
[0054]
　　- Operation Mode
　In the following, the relay terminal 300 an operation mode for transmitting a discovery signal referred to as a first mode of operation, referred to the operation mode that does not transmit a discovery signal with the second operation mode.
[0055]
　For example, base station 100 may transmit an activation notification discovery signal to the relay terminal 300. In that case, the relay terminal 300, usually while operating in the second operation mode, when receiving the activation notification shifts to the first operation mode (i.e., activation to) transmits a discovery signal . Activation notification includes such transmission cycle and the number of transmissions of the discovery signal, a transmission setting relating to discovery signal. Activation notification may be transmitted using, for example, RRC (Radio Resource Control) signaling or DCI (Downlink Control Information). Activation may be performed in accordance with the position information or the terminal-specific information is notified from the terminal side (such as information about the buffer in the battery information and terminal capability information or terminal).
[0056]
　For example, the base station 100, information indicating the activation region is the geographical range to operate in a first mode of operation may be transmitted to the relay terminal 300. Information indicating the activation area may be, for example, latitude and longitude information, or the like information about the zone obtained by dividing the geographical information into a particular zone. Moreover, the activation area may be set for each frequency used for communication. In that case, the relay terminal 300 may operate in a first mode of operation when the position information thereof is included in the activation region, otherwise operates in the second operating mode. These operations may be performed for each frequency used. Information indicating the activation region, for example, system information (i.e., the MIB (Master Information Block) (in other words, PBCH (Physical Broadcast Channel)) or SIB (System Information Block)) may be transmitted using or RRC signaling.
[0057]
　For example, the relay terminal 300, the base station 100 based on the received power of signals from the remote terminal 200 to the destination may transmit a discovery signal. Specifically, the relay terminal 300, senses the uplink transmission bandwidth of the remote terminal 200, if the power sensed exceeds a predetermined threshold value and operating in the first operating mode, otherwise the second operation it may operate in mode. Information regarding uplink transmission bandwidth to implement the sensing may be notified from the base station 100 to the relay terminal 300. The base station 100 resource allocation information for the uplink communications to notify the remote terminal 200, as read in the relay terminal 300 side may notify the information on reading with DCI region. Thus, the relay terminal 300, even without explicit instructions or requests from the base station 100 or remote terminal 200, it is possible to provide a voluntarily relay communication by detecting a communication start at the remote terminal 200 . Configuration information about the bandwidth threshold and sensing target power is provided using the RRC signaling, for example, from the base station 100.
[0058]
　　- discovery request
　relay terminal 300, before sending the discovery signal, and notifies the information about the discovery signal to the network side (e.g., base station 100). Such notification, also referred to as a discovery request. Discovery request may include for example, identification information (UE identity or Capability) of the relay terminals 300 and the application identification information and the like. Network side receives the discovery request, and returns a discovery request response to the relay terminal 300 as a response. Relay terminal 300, the discovery request response time period which can act as a relay terminal 300, i.e. a timer indicating a period that can relay the communication of the remote terminal 200 may be set. The resource pool information for operating as a relay terminal 300 may be provided.
[0059]
　- operation of the receiving side of the discovery signal
　the remote terminal 200 (e.g., found 241), in the predetermined resources configured to discover relay terminal 300 by monitoring the discovery signal from the relay terminal 300. Hereinafter, an example of a specific monitoring process.
[0060]
　- monitoring process using the paging
　in monitoring processing using paging, the paging relay terminal 300 base station 100 is substitute transmission, the remote terminal 200 performs monitoring based on the paging. Specifically, the remote terminal 200 (in other words, the paging timing) paging period set by the base station 100 monitors a discovery signal in. This point will be described in detail with reference to FIG.
[0061]
　Figure 5 is a diagram for explaining an example of a relay terminal discovery process according to the present embodiment. First, the base station 100, in addition to the normal paging defined in LTE, make settings for relay communication dedicated paging. For example, the base station 100, the remote terminal 200 and the relay terminal 300, sets the paging period of the same relay communication only. Then, as shown in FIG. 5, the relay terminal 300 transmits a discovery signal at the set relay communication dedicated paging period, the remote terminal 200 monitors the set relay communication dedicated paging period. Since the paging period of the same relay communication dedicated to each of the remote terminals 200 and the relay terminal 300 is set, the remote terminal 200 is capable of a discovery signal from the relay terminal 300 efficiently monitored for.
[0062]
　Base station 100, for example using a paging channel, and notifies the setting information about the relay communication dedicated paging and set.
[0063]
　Relay terminal 300, the relay communication dedicated paging is set, in a single relay communication dedicated paging period, to implement the transmission of at least one time or more discovery signals.
[0064]
　Remote terminal 200, the paging period of the relay communication only is set, by monitoring the signal from the period in relay terminal 300 that is set, to find a discovery signal.
[0065]
　Settings for relay communication dedicated paging performed by the base station 100 may be have in time resource as described above, can have with respect to frequency resources. For example, the base station 100, the same frequency band, is set to the relay terminal 300 as a frequency band to be transmitted discovery signals, may be installed on the remote terminal 200 as a frequency band to be monitored. Also, the remote terminal 200 and the relay terminal 300 may be set to these frequency bands in advance. In that case, the frequency band may be, for example, same channel as the paging channel.
[0066]
　- monitoring processing using the resource pool
　monitoring processing using the resource pool, transmission and monitoring of the discovery signal is performed in a given resource pool. The following describes the monitoring process using the resource pool.
[0067]
　Setting information of a resource pool to be used for transmission of the discovery signal may be provided from the base station 100, it may be previously set in the remote terminal 200 and the relay terminal 300. If the setting from the base station 100 information is provided, RRC signaling or system information can be used.
[0068]
　Setting information of the resource pool may be generated based on the position information and the direction (Direction) information of the relay terminal 300. In this case, the relay terminal 300 periodically reports the position information and direction information of its own to the base station 100, the base station 100 generates the setting information of the resource pool based on the information. Or, it may be provided mapping information of the position information and the resource pool from the base station 100. In this case, the relay terminal 300, using the position information thereof, with reference to the mapping information provided from the base station 100 determines a resource pool itself.
[0069]
　The base station 100 may transmit a monitoring request message to the remote terminal 200. Monitoring Request message may include ID information, such as identification information of the to be filtered discovery signal discovery filter ID (Discovery filter ID) discovery ID is identification information or received to be discovery signals (Discovery ID). Base station 100, the ID information to be assigned to the relay terminal 300, may be previously notified to the remote terminal 200 and the relay terminal 300. Base station 100, the ID information of the relay terminal 300, identification information of the relay terminal 300 (e.g., GUTI (Global Unique Temporary Identity) or TMSI (Temporary International Mobile Subscriber Identity)) may be generated based on. Further, the base station 100, one of the ID information which has been reserved in advance, or may be assigned as ID information of the relay terminal 300.
[0070]
　Remote terminal 200 may be monitored by for all of the allocated resource pool may be monitored by a part in the target. Monitoring intended for the part it is also referred to as partial monitoring (Partial monitoring).
[0071]
　For example, the remote terminal 200, when performing partial monitoring, resource pool in timer setting (i.e., a predetermined time resource of the resource pool) may be monitored as target. Also, the remote terminal 200, the battery information of its own, depending on the buffer information or position information may be performed partial monitoring, the setting of the partial monitoring may be set by itself in accordance with the parameter information, the base it may be set from the station 100. When set from the base station 100, the remote terminal 200 should notify the information to the base station 100 in advance. Note that the battery information, battery level, battery capacity, and may include a battery consumption rate and the like. The buffer information may include the buffer size, and the buffer free space, or the like. Further, the base station 100, and instructs the implementation of partial monitoring time resources being monitored (hereinafter, partial monitoring also referred to the window) may be or set or frequency resources. For partial monitoring, it will be described in more detail with reference to FIG.
[0072]
　Figure 6 is a diagram for explaining an example of a relay terminal discovery process according to the present embodiment. As shown in FIG. 6, the relay terminal 300, the transmission window may be set. This setting can be performed for example by the base station 100. Relay terminal 300, only the transmission window and transmits a discovery signal. Then, the remote terminal 200 monitors the discovery signal in the partial monitoring window to find a relay terminal 300. Further, as shown in FIG. 6, the transmission window is set to the partial monitoring window and the relay terminal 300 is set to the remote terminal 200, may be of different lengths. Further, as shown in FIG. 6, the remote terminal 200 belonging to different groups may be set different partial monitoring window. The group configuration of the remote terminal 200 can be performed based on the position estimate information or terminal category information using the position information or the received signal of the remote terminal 200.
[0073]
　(2) The second method
　The second method, the remote terminal 200 (hereinafter, simply referred to as discovery signal) second discovery signal sends, receives a relay terminal 300.
[0074]
　- Operation of the transmission side of the discovery signal
　the remote terminal 200 (e.g., found 241), in the predetermined resources configured to transmit a discovery signal for discovering remote terminal 200 to the relay terminal 300. The transmission of the discovery signal may be realized by the discovery communication side links. Discovery Communication here may be a discovery communication type 1 3GPP Release 12, may be a discovery communication type 2.
[0075]
　　- transmission trigger
　remote terminal 200 at an arbitrary timing such as timing of transmission traffic is generated, and transmits a discovery signal. Other remote terminals 200 may use the same transmission trigger a relay terminal 300 in the first method.
[0076]
　　- Resource
　remote terminal 200, using the selected resource (frequency resource and / or time resources) from the set or pre-configured resources pooled from the base station 100 transmits a discovery signal.
[0077]
　Remote terminal 200, among the resource pool may transmit a discovery signal in the set timer period.
[0078]
　　- relay candidate
　remote terminal 200 operates as a relay terminal 300 (processing for relaying communication of the remote terminal 200) previously registers the terminal apparatus is possible candidate (i.e., memory) may be. For example, only authorized terminals from the network side may be operable as a relay terminal 300. Remote terminal 200, registers the identification information of the operable terminal apparatus as a relay terminal 300.
[0079]
　Remote terminal 200, an operable terminal apparatus as a relay terminal 300, to operate as a forced relay terminal 300 may transmit a forced relay request. Operable terminal apparatus as a relay terminal 300, when receiving the compulsory relay request from the remote terminal 200 operates as forcibly relay terminal 300. Forced relays request may be notified from the base station 100. Furthermore, forced relay request may be transmitted to the base station 100 side. When receiving the signal at the base station 100 side, the base station 100 to be able to remote terminal 200 of the requester performs relay communication, to operate the periphery of the relay candidate terminal as a relay terminal 300. Base station 100, after activation exemplary relay terminal 300, as the activation result notification to the remote terminal 200, to provide such resources and the ID information of the relay terminal for the relay communication.
[0080]
　　- The contents of the discovery signal
　discovery signal the remote terminal 200 transmits includes at least one or more of the following information.
　　· Identity of the remote terminal 200
　　buffer information of remote terminal 200
　　Battery information remote terminal 200
　　capability information of the relay terminal 300 (battery capacity, the buffer memory size, CPU processing power, RF configuration) including
　　a relay request level information indicating
　　　(communication quality or QoS, etc.,)
　　mobility information of the remote terminal 200
　　location information of the remote terminal 200
　　　(zone information indicating the latitude and longitude information, or existence range indicating the presence position)
　　monitoring resources remote terminal 200 pool information
　　　(information about the resource pool that is used to send the discovery signal)
　　priority information remote terminal 200
　　, the priority information of the packet of the remote terminal 200
　　to handle traffic information, the remote terminal 200
　　, the remote terminal 200 is a base station 10 Line number, line type capable of performing direct communication when
[0081]
　Note that the number of lines that can communicate directly with the base station 100 refers to the number of backup line is information for grasping either have how the connection possibilities of the network. For example, the relay terminal 300, if the remote terminal 200 does not have a backup line only one line, it is determined that the vulnerable backup line, performs relay communication of the remote terminal 200 preferentially. As the line type include UMTS or E-UTRA, and the like.
[0082]
　Discovery signal of the receiving side of the operation
　relay terminal 300 (e.g., found 341), based on the discovery signal transmitted from the remote terminal 200 in a predetermined resources configured, the base station 100 the signal from the remote terminal 200 It determines whether or not to relay to. Specifically, the relay terminal 300 monitors the discovery signal from the remote terminal 200 to discover remote terminal 200 based on the discovery signal was successfully received.
[0083]
　- monitoring processing
　relay terminal 300, explained above with respect to the first method, it may perform monitoring processing using the monitoring process or resource pool using paging.
[0084]
　- operation after successful reception of the discovery signal
　relay terminal 300, the result of the monitoring process, a successful reception of the discovery signal from the remote terminal 200, determines whether to execute the relay communication. In other words, operable terminal apparatus as a relay terminal 300 determines successfully receives the discovery signal, actually whether to operate as a relay terminal 300.
[0085]
　For example, the relay terminal 300, if the number of remote terminal 200 and found is equal to or larger than the threshold, to implement the relay communication. This threshold may be provided by the base station 100, may be set by the user of the relay terminal 300, it may be set in advance. Threshold may be set in accordance with the traffic volume of the relay terminals. Relay terminal 300, other numbers of remote terminal 200 to discover, battery information of the relay terminal 300, the moving speed, or based on the moving direction and the like, may determine whether to execute the relay communication.
[0086]
　Relay terminal 300 discovers an remote terminal 200 may notify the remote terminal 200 information indicating that the found. Thus, the remote terminal 200 to discover relay terminal 300, it is possible to shift to relay communication.
[0087]
　(3) Third method
　The third method, the remote terminal 200, the synchronization signal transmitted from the relay terminal 300, MIB (i.e., PBCH), SIB, SLSS ( Sidelink Synchronization Signal) or PSBCH (Physical Sidelink Broadcast Channel ) on the basis, finding a relay terminal 300.
[0088]
　Relay terminal 300, like the small cell base station, the synchronization signal may be transmitted MIB and SIB, may transmit SLSS / PSBCH. Incidentally, the synchronization signal may be transmitted if required be omitted.
[0089]
　Remote terminal 200 first detects a sync signal from the relay terminal 300. Relay terminal 300, the ID information assigned to the relay terminal 300, a typical base station is used in a manner similar to that transmits the synchronization signal using the cell ID, and transmits the synchronization signal. Thus, the remote terminal 200, it is possible to find a relay terminal 300.
[0090]
　Base station 100, the ID information to be assigned to the relay terminal 300 in advance may be previously notified to the remote terminal 200 and the relay terminal 300. Base station 100, the ID information of the relay terminal 300, identification information of the relay terminal 300 (e.g., GUTI or TMSI) may be generated based on. Further, the base station 100, one of the ID information which has been reserved in advance, or may be assigned as ID information of the relay terminal 300.
[0091]
　The synchronization signal from the base station 100, if the synchronization with the remote terminal 200 and the relay terminal 300 is established, the synchronization signal from the relay terminal 300 may be omitted.
In that case, the relay terminal 300 transmits the MIB and SIB or SLSS / PSBCH. In that case, the relay terminal 300, the MIB or SIB or SLSS / PSBCH, ID information assigned to at least the relay terminal 300, and information required for data transmission after (e.g., information indicating the transmission timing, etc.) include.
[0092]
　(4) Fourth method
　The fourth method, the base station 100, to support the discovery of the relay terminal 300 by the remote terminal 200.
[0093]
　Remote terminal 200 (e.g., found 241) inquires close to whether relay terminal 300 is present in the base station 100. The base station 100 provides a neighboring relay UE list (Neighbor relay UE List) to the remote terminal 200 showing a list of the relay terminal 300 which exists near the remote terminal 200. Remote terminal 200, by referring to the neighbor Relay UE list provided to discover neighbor relay terminal 300.
[0094]
　<3.2. Transmission path switching>
　remote terminal 200 (e.g., the determination unit 243) determines which base station 100 or relay terminal 300 whether the destination for each packet depending on whether a predetermined condition is satisfied . Then, the remote terminal 200, a connection destination switching or maintains per packet according to the determination result. This makes it possible to best destination for each packet is selected, it becomes possible to increase the power consumption reducing effect.
[0095]
　The predetermined condition is variously considered. Hereinafter, an example of a predetermined condition. Remote terminal 200, may be used in combination any one or any of the plurality of predetermined conditions described below.
[0096]
　(1) Time
　for example, the predetermined condition may be a condition regarding the time the transmission traffic has passed without the relay terminal 300 from the occurrence not found.
[0097]
　As background, in the IoT for communication, periodic communication, or to use cases to perform burst transmission is assumed, is allowed to time lag from the transmission traffic occurs until actual transmission. Remote terminal 200, after the transmission traffic occurs during the time lag that is the permissible, it is possible to perform relay terminal discovery process. Meanwhile, the remote terminal 200, it is desirable to protect the latency requirements.
[0098]
　Therefore, the remote terminal 200, a predetermined threshold value (i.e., timer) is set and according to whether or not found relay terminal 300 before sending traffic expires timer from the occurrence, selects a destination . This point will be described in detail with reference to FIGS.
[0099]
　7 and 8 are diagrams for explaining an example of a transmission path switching process according to the present embodiment. As shown in FIGS. 7 and 8, the remote terminal 200, the transmission traffic is generated, a timer is started. Then, the remote terminal 200 transmits the pending, and performs relay terminal discovery process. Then, as shown in FIG. 7, the remote terminal 200, if the timer remains outgoing traffic is not found relay terminal 300 from the occurrence has expired, a direct communication with the base station 100. On the other hand, as shown in FIG. 8, the remote terminal 200, when the transmission traffic before the timer expires from the occurrence and found relay terminal 300, for example, equal to receiving a discovery signal from the relay terminal 300 performs relay communication through the relay terminal 300.
[0100]
　Remote terminal 200 may perform a relay terminal discovery process only during the timer setting time. For example, if the first method described above is employed, the remote terminal 200, performs monitoring during timer setting period. On the other hand, if the second method described above is employed, the remote terminal 200 transmits a discovery signal in the timer setting period. Also, the remote terminal 200, even outside the timer setting time (e.g., at all times), may be performed relay terminal discovery process.
[0101]
　From the above background, the timer is set to less than or equal to the maximum allowable delay time of the transmission packet.
[0102]
　The timer may be set by using the RRC signaling or the like from the base station 100, it may be set by the remote terminal 200 itself. Moreover, the timer may be set in advance the remote terminal 200.
[0103]
　Timer, to a different value for each remote terminal 200 may be set a different value for each group including a plurality of remote terminals 200 may be set. In addition, the remote terminal 200 to connect to the same cell, the same timer may be set.
[0104]
　If it is desired to perform only the relay communication via the relay terminals 300, the timer may be set to infinity.
[0105]
　Condition determination regarding timer, also, may be performed by the base station 100 than performed by the remote terminal 200. In that case, the base station 100 performs the notification of the stop when the timer expires and notifies the start of the relay terminal discovery process. Meanwhile, the remote terminal 200 performs the relay terminal discovery process to stop direct communication when a start is notified. Then, the remote terminal 200, upon finding a relay terminal 300 before the stop is notified performs relay communication, communicate directly when the stop without being discovered is notified.
[0106]
　(2) the free space in the buffer
　for example, the predetermined condition may be a condition regarding the free space in the buffer for storing the transmission traffic.
[0107]
　For example, the remote terminal 200 sets a predetermined threshold value, the free space in the buffer for storing the transmission traffic according to whether it exceeds a predetermined threshold value, selects a destination. Specifically, the remote terminal 200, until the free space of the buffer exceeds a predetermined threshold, performs the relay terminal discovery process for performing or relay communication relay communication. Then, the remote terminal 200, when the free space of the buffer exceeds a predetermined threshold, performing direct communication.
[0108]
　Predetermined threshold may be set by using the RRC signaling or the like from the base station 100, it may be set by the remote terminal 200 itself. The predetermined threshold value may be set in advance the remote terminal 200.
[0109]
　(3) latency
　example, the predetermined condition may be a condition regarding latency required for packet.
[0110]
　For example, the remote terminal 200 communicates directly with respect to a certain urgency packet, it performs relay communication regarding no urgency packet. Also, the remote terminal 200, before performing the direct communication, the required latency whether it is possible to satisfy also relay communication may be confirmed to the base station 100 or relay terminal 300.
[0111]
　(4) QoS
　example, the predetermined condition may be a condition regarding QoS required for the packet. The predetermined condition may be a priority information of a packet.
[0112]
　For example, the remote terminal 200 communicates directly with respect to the required QoS is high packet, performs relay communication regarding the required QoS is low packet. Also, the remote terminal 200, before performing the direct communication, the required QoS whether it is possible to satisfy also relay communication may be confirmed to the base station 100 or relay terminal 300.
[0113]
　(5) data size
　for example, the predetermined condition may be a condition regarding the data size of the packet.
[0114]
　For example, the remote terminal 200 sets a predetermined threshold value, the data size of a packet to be transmitted depending on whether more than a predetermined threshold value, selects a destination. Specifically, the remote terminal 200 may communicate directly when data size of the packet exceeds a predetermined threshold value, if not exceed performing relay communications. In this case, it loads on the relay terminal 300 can be reduced. Or, the remote terminal 200 performs relay communication when data size of the packet exceeds a predetermined threshold value, if not exceed communicating directly. In this case, it may increase the power consumption effects of the remote terminal 200.
[0115]
　Predetermined threshold may be set by using the RRC signaling or the like from the base station 100, it may be set by the remote terminal 200 itself. The predetermined threshold value may be set in advance the remote terminal 200. The predetermined threshold may be dynamically set.
[0116]
　(6) geographical relationships
　example, the predetermined condition may be a condition regarding geographic relationship with the remote terminal 200 and the relay terminal 300.
[0117]
　For example, the remote terminal 200 performs relay communication when geographically relay terminal 300 near there, communicate directly in the absence nearby. Thus, the remote terminal 200, it is possible to perform relay communication with less transmission power, low power consumption effect is enhanced.
[0118]
　Base station 100, whether geographically relay terminal 300 in the vicinity of the remote terminal 200 is present, may notify the remote terminal 200. The base station 100 may notify the location information of the relay terminal 300 to remote terminal 200. In that case, the remote terminal 200 by comparing the position information and its own location information of the relay terminal 300 notified from the base station 100 determines whether geographically relay terminal 300 near there . The base station 100 may notify the information indicating whether the relay terminal 300 is present in each predetermined area. In that case, the remote terminal 200 refers to the information of the area to which it belongs, it is determined whether geographical relay terminal 300 near there. Furthermore, the exchange of geographic information may be the zone information is used there are the terminals.
[0119]
　(7) the state of the relay terminal 300
　for example, the predetermined condition may be a condition relating to the state of the relay terminal 300.
[0120]
　For example, operable terminal apparatus as a relay terminal 300, when in the state in which it is difficult to operate as a relay terminal 300, notifies the relay communication failure notification indicating that fact to the remote terminal 200 (e.g., broadcast) to. The state in which it is difficult to operate as a relay terminal 300, for example, a state where the battery remaining amount is reduced, already state that provides a relay communication to other remote terminals 200, quality of the backhaul link line etc. If you can not collateral, and the like. Remote terminal 200 selects a destination on the basis of this notification. For example, the remote terminal 200, if the relay communication disabled from the relay terminal 300 notification is notified, the mate of the relay communication, switches to direct communication. Call relay communication notification may be notified from the base station 100.
[0121]
　(8) state of the communication channel
　for example, the predetermined condition may be a condition regarding the state of the channel state, i.e., the side links of the remote terminal 200 and the relay terminal 300.
[0122]
　For example, the remote terminal 200, the threshold value relating to the state of the side links, and sets a predetermined threshold for the congestion degree as an example, the congestion degree of the side links, depending on whether more than a predetermined threshold value, selects a destination. Specifically, the remote terminal 200, the congestion degree of the side links communicate directly when it exceeds a predetermined threshold, performing relay communications if not exceeded. As a result, the excessive congestion of the side link is prevented. Congestion information may be provided from the base station 100, the terminal itself may calculate perform sensing. Sensing region may be set from the base station 100, pre-set parameters may be used.
[0123]
　Predetermined threshold may be set by using the RRC signaling or the like from the base station 100, it may be set by the remote terminal 200 itself. The predetermined threshold value may be set in advance the remote terminal 200. The predetermined threshold may be dynamically set.
[0124]
　As the state of side links, instead of the congestion degree may be the result of sensing is performed by the remote terminal 200 or the relay terminal 300 is used.
[0125]
　<3.3. Relay communication>
　remote terminal 200 (e.g., the transmission processing unit 245), the destination of each above-mentioned packets (i.e., transmission path) according to the determination result, transmits to the determined destination packets to be determined. Therefore, the remote terminal 200, for each packet may be transmitted by switching a communication or relay communication directly. The following is a description of which will relay communication in detail.
[0126]
　Relay terminal 300 (relay processing unit 343) receives a packet from the remote terminal 200, and relays it to the base station 100 (i.e., transmission). Transmission of data in the relay communication may be implemented by a mode 1 communication or mode 2 communication side links. Transmission of data in direct communication may be realized by up-link communication.
[0127]
　Remote terminal 200, upon finding a relay terminal 300 performs an attach processing for the relay terminal 300. Thus, the remote terminal 200 is registered as a terminal device connected to the relay terminal 300. Thereafter, the remote terminal 200 performs relay communication through the relay terminal 300.
[0128]
　Relay terminal 300 ceases to operate as a relay terminal 300, or to the deterioration of communication quality can be found, for relaying communication of the remote terminal 200. Relay terminal 300, to cease to operate as a relay terminal 300, a release message indicating that ceases to operate as a relay terminal 300 may be transmitted to the remote terminal 200. Remote terminal 200 that has received the release message is newly searched relay terminal 300, or to implement the original handover to the base station 100 is a serving base station.
[0129]
　Reception timing of the transmission timing and the relay terminal 300 of the remote terminal 200 in the relay communication may be designated from the base station 100, it may be set in advance. Also, as in the first method may be limited transmission period and the monitoring period.
[0130]
　<3.3.1. Bearer>
　The following describes the bearer used for relay communication.
[0131]
　(1) recycling bearer of the remote terminal 200
　as a premise, the remote terminal 200 is assumed to have established a connection with the base station 100 in advance. In the relay communication, the bearer of the remote terminal 200 may be recycled to pre-established. In this case, the remote terminal 200, in order to temporarily release the radio bearer with the base station 100, and notifies the release request of the radio bearer to the base station 100. Incidentally, the remote terminal 200, the release request of the radio bearer may be notified by direct communication may notify the relay communication. Then, the remote terminal 200, notifies information for bearer reconfiguration (Reconfiguration) to the relay terminal 300.
[0132]
　Remote terminal 200, in order to relay terminal 300 can be set a bearer on behalf of the remote terminal 200, and notifies the identification information of itself to the relay terminal 300. Relay terminal 300, using the notified identification information on behalf of the remote terminal 200, i.e. impersonate the remote terminal 200, and sets the bearer. Also, the remote terminal 200, information indicating that the notified identification information to the relay terminal 300 may notify the base station 100. This identification information may be, for example, temporary identification information, specifically may be a GUTI or TMSI.
[0133]
　Remote terminal 200 sends a service request via the relay terminal 300, using a service request received from the remote terminal 200, relay terminal 300, performs the setting request bearer.
[0134]
　Described above, a flow of a series of processing according to the reuse of the bearer of the remote terminal 200 will be described with reference to FIG.
[0135]
　Figure 9 is a sequence illustrating an example of the flow of the bearer reuse process executed in the system 1 according to this embodiment. This sequence, the remote terminal 200, relay terminal 300, the base station 100, MME, S-GW, P-GW, the PCRF and HSS involved.
[0136]
　As shown in FIG. 9, as an initial state, the radio section is open, it is assumed the S-GW and P-GW is always connected, (Always on). Further, communication with the remote terminal 200 and other devices shall be relayed by the relay terminal 300.
[0137]
　First, the remote terminal 200 transmits a service request to the MME (step S202). Then, the remote terminal 200 performs authentication processing and concealment processing with the MME (step S204). Incidentally, MME may exchange messages for the authentication processing and the concealment processing, performed with the HSS. Then, MME is a radio bearer setup request to the base station 100 and the relay terminal 300 (step S206). Then, the relay terminal 300, between the remote terminal 200, and establishes a radio bearer with the base station 100 (step S208). Then, the base station 100 transmits a bearer update request to the MME (step S210). Then, MME is, S-GW, between P-GW and PCRF, performs bearer update process (step S212). Then, MME sends a bearer update response to the base station 100 and the relay terminal 300 (step S214).
[0138]
　(2) diversion of the bearer of the relay terminal 300
　as a premise, the relay terminal 300 is assumed to have established a connection with the base station 100 in advance. Relay terminal 300, by diverting its bearer may transmit data from the remote terminal 200. In that case, the relay terminal 300 uses its bearer, and transmitting the IP session from the remote terminal 200 (i.e., packets). Relay terminal 300, a packet received from the remote terminal 200 may buffer. The relay terminal 300, after a predetermined time buffering, by using its own bearer, transmits a packet from the remote terminal 200 which is buffered to the network side (i.e., base station 100).
[0139]
　Relay terminal 300, also its own packet, and transmits to the base station 100 using its bearer. Therefore, each of the remote terminals 200 and the relay terminal 300 stores information indicating the transmission source to the own packet (e.g., its own identification information), respectively. Thus, the base station 100, transmission source of the packet received from the relay terminal 300 is able to determine whether the remote terminal 200 on the 7th relay terminal 300 are.
[0140]
　(3) setting a dedicated bearer
　relay terminal 300 may set a dedicated bearer for transmitting a packet from the remote terminal 200. Relay terminal 300, apart from its bearer, to establish (or according to the remote terminal 200) bearer depending on the application, may accommodate bearer remote terminals 200 in such a bearer. Again, the remote terminal 200 and the relay terminal 300, by storing the information indicating the transmission source to the own packet, respectively, may allow determination of the transmission source in the base station 100.
[0141]
　Relay terminal 300, after the start of operation as a relay terminal 300 may establish a bearer for each remote terminal 200 may establish a bearer for each group of remote terminal 200 belongs.
[0142]
　<3.3.2. Burst transmission>
　In relay communication, and transmits the data collectively from a predetermined amount or a predetermined time buffering, burst transmission may be performed. For example, if there is sufficient relatively latency requirements, the relay terminal 300 may perform burst transmission to the base station 100.
[0143]
　The following describes settings of the burst transmission. Performing burst transmission trigger may be set by combining one or by several ways, one example of which is shown in the following. The following process for performing burst transmission in the description of a process of collectively transmitted data from the relay terminal 300 buffered until then.
[0144]
　(1) time-triggered based on
　execution triggering a burst transmission may relate to a time.
[0145]
　For example, the relay terminal 300 may perform burst transmission in set period. First assumption, the execution interval of the burst transmission is preferably equal to or less than the maximum delay amount. In this regard, relay terminal 300, when the RRC connection setup, and notifies the information of the maximum delay request to the base station 100. Therefore, the base station 100, based on the notified information, sets the execution interval of the burst transmission below the maximum delay amount (i.e., period). The setting information is, for example may be notified by RRC signaling.
[0146]
　For example, the relay terminal 300 may perform burst transmission at the time set. For example, the network side if late night are expected to be relatively empty. Therefore, it triggers the late night is to time to execute the burst transmission may be set.
[0147]
　(2) trigger based on remaining buffer capacity
　execution trigger burst transmissions, the remaining buffer capacity of the relay terminals 300 (i.e., the free space in the buffer) can have respect. For example, the relay terminal 300 compares the size of data buffered received from the buffer size and the remote terminal 200 itself performs the burst transmission if the remaining buffer capacity is equal to or less than the threshold value. The threshold value is, the network side (e.g., base station 100) may be notified from may be set in advance to the relay terminal 300.
[0148]
　(3) Trigger based on channel state
　execution triggering a burst transmission may relate to a channel state between the relay terminal 300 and the base station 100. For example, the relay terminal 300 performs CSI (Channel State Information) measured, the measured channel state to perform a burst transmission if equal to or more than the threshold value. The channel conditions, for example, RSRP (Reference Signal Received Power) or RSRQ (Reference Signal Received Quality) may be used. The threshold value is, the network side (e.g., base station 100) may be notified from may be set in advance to the relay terminal 300.
[0149]
　(4) the trigger is based on the speed information or position information
　execution trigger burst transmission may relate to the speed information or the position information of the relay terminal 300. For example, the relay terminal 300, if the if the speed information is equal to or greater than the threshold value or indicating the position information position is included in the predetermined region, to perform a burst transmission. The threshold or a predetermined area, the network side (e.g., base station 100) may be notified from may be set in advance to the relay terminal 300.
[0150]
　(5) trigger based on other RAT (Radio Access Technology)
　executes trigger burst transmission may relate to other RAT. For example, the relay terminal 300, when connected to another RAT, performing burst transmission using another RAT. Here another RAT at, for example wireless LAN (Local Area Network) or Bluetooth (registered trademark), an off-loading can RAT.
[0151]
　<3.4. Incentives calculations>
　The relay terminal 300 that performs relay communication may be incentives given. Relay terminal 300 is to relay packets for the operator using its own processor power and battery.
[0152]
　For example, PCRF the relay terminal 300 can calculate the incentive depending on the amount of data relay. Specifically, PCRF identifies the relay packet based on the acquired relay information from the base station 100, calculates the incentive depending on the amount of such packets. Relay information includes, for example, source IP address, destination IP address, and port number.
[0153]
　Calculation of incentive may be performed in bearer units of relay terminal 300. For example, calculation of incentive may be calculated based on the product of the number of bearers and the number of sessions of the relay terminal 300. The calculation of incentive may be performed in bearer units of the remote terminal 200 dedicated set in relay terminal 300.
[0154]
　Incentives may be implemented in a variety of formats. For example, incentives may be reduced to the user of the relay terminal 300 as a point or cash may be reduced as a pulling of the communication possible upper limit. In addition, incentives, may be reduced as the participation rights, etc. of available games in exchange for the point. In addition, incentives, may be reduced as a monthly status rank given to the user. Thus, the incentive in the PCRF, may be provided in conjunction with the application.
[0155]
　<< 4. Applications >>
　according to the disclosed technique is applicable to various products. For example, the remote terminal 200 or the relay terminal 300, a smart phone, a tablet PC (Personal Computer), notebook PC, portable game terminals, such as portable / dongle type mobile router or mobile terminal, such as a digital camera, or a car navigation system it may be implemented as an in-vehicle terminal. Also, the remote terminal 200 or the relay terminal 300 may be implemented as M2M (Machine To Machine) (also called MTC (Machine Type Communication) terminal) terminal that performs communications. Furthermore, the remote terminal 200 or the relay terminal 300, wireless communication module mounted on these terminals (e.g., an integrated circuit module consists of a single die) may be used.
[0156]
　　　(First applied example)
　FIG. 10 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.
[0157]
　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.
[0158]
　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.
[0159]
　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. 10. Although the wireless communication interface 912 in FIG. 10 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.
[0160]
　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.
[0161]
　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.
[0162]
　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. 10. Although in FIG. 10 shows an example where the smartphone 900 has a plurality of antennas 916, the smartphone 900 may have a single antenna 916.
[0163]
　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.
[0164]
　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. 10. Auxiliary Controller 919, for example, in the sleep mode, to operate the required minimum functionality of the smartphone 900.
[0165]
　In the smartphone 900 shown in FIG. 10, one or more components included in the processing unit 240 described with reference to FIG. 2 (discovery unit 241, determination unit 243 and / or the transmission processing unit 245), or Figure 3 Referring to one or more of the components included in the processing unit 340 described above (finder 341 and / or relay processing unit 343) may be implemented in a wireless communication interface 912. 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.
[0166]
　Further, in a smart phone 900 shown in FIG. 10, for example, wireless communication unit 320 described with reference to wireless communication unit 220 or Figure 3 has been described with reference to Figure 2, wireless communication interface 912 (e.g., RF circuitry 914 may be implemented in). The antenna portion 310 described with reference to the antenna portion 210 or Figure 3 has been described with reference to FIG. 2 may be implemented in the antenna 916. The storage unit 330 described with reference to the storage unit 230 or Figure 3 has been described with reference to FIG. 2 may be implemented in the memory 902.
[0167]
　　　(Second applied example)
　FIG. 11 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.
[0168]
　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.
[0169]
　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.
[0170]
　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.
[0171]
　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. 11. Although the wireless communication interface 933 in FIG. 11 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.
[0172]
　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.
[0173]
　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.
[0174]
　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. 11. Although the car navigation system 920 in FIG. 11 shows an example having a plurality of antennas 937, car navigation device 920 may have a single antenna 937.
[0175]
　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.
[0176]
　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. 11. Further, the battery 938 accumulates electric power fed from the vehicle side.
[0177]
　In car navigation device 920 shown in FIG. 11, one or more components (discovery unit 241, determination unit 243 and / or the transmission processing unit 245) included in the processing unit 240 described with reference to FIG. 2, or FIG. 3 with reference to one or more of the components included in the processing unit 340 described above (finder 341 and / or relay processing unit 343) may be implemented in a wireless communication interface 933. 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.
[0178]
　Further, the car navigation apparatus 920 shown in FIG. 11, for example, wireless communication unit 320 described with reference to wireless communication unit 220 or Figure 3 has been described with reference to Figure 2, wireless communication interface 933 (e.g., RF it may be implemented in circuit 935). The antenna portion 310 described with reference to the antenna portion 210 or Figure 3 has been described with reference to FIG. 2 may be implemented in the antenna 937. The storage unit 330 described with reference to the storage unit 230 or Figure 3 has been described with reference to FIG. 2 may be implemented in the memory 922.
[0179]
　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. 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.
[0180]
　<< 5. Conclusion >>
　above with reference to FIGS. 1 to 11 have been described in detail an embodiment of the present disclosure. As described above, the remote terminal 200 according to the embodiment determines which base station 100 or relay terminal 300 whether the destination for each packet depending on whether a predetermined condition is satisfied . Thus, the remote terminal 200, it is possible to select a communication path in a packet unit, thereby improving the flexibility of selection. Further, the relay terminal 300, the result of the determination, a packet received from the remote terminal 200, and relays it to the base station 100. Thus, the relay terminal 300 is able to perform traffic offloading in packet units.
[0181]
　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 clear that to cover various modifications, combinations, for these It is also understood to belong to the technical scope of the present disclosure.
[0182]
　For example, in the above description particular for direct communication and relay communication according to the transmission of uplink signals from the relay terminal 300, the present technique is not limited to such an example. For example, with respect to direct communication and relay communication according to the transmission of the downlink signal to the relay terminal 300, the present technique is applicable. For example, the base station 100, the downlink signal to the relay terminal 300, determine which of the relay terminal 300 or remote terminal 200 or the destination, for each packet depending on whether a predetermined condition is satisfied it may be. Incidentally, since the connecting relay terminal 300 already in the base station 100, relay terminal discovery process may be omitted.
[0183]
　Moreover, the processing described with reference to sequence diagrams in this specification may not be performed in the order always shown. Some process steps may be executed in parallel. Also may be additional processing steps employed, some of the processing steps may be omitted.
[0184]
　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.
[0185]
　Also within the scope of the present disclosure the following configurations.
(1)
　so as to select one of the transmission destination base station or a relay terminal, the processing unit determines for each packet depending on whether a predetermined condition is satisfied
terminal device comprising a.
(2)
　the predetermined condition relates to the time that has elapsed while the relay terminal is not found outgoing traffic from occurring, the terminal apparatus according to (1).
(3)
　the predetermined condition relates to the free space in the buffer for storing the transmission traffic, the terminal device according to (1) or (2).
(4)
　wherein the predetermined condition relates to latency required for the packet, wherein (1) the terminal device according to any one of - (3).
(5)
　wherein the predetermined condition relates to QoS (Quality of Service) required for the packet, wherein (1) to the terminal device according to any one of (4).
(6)
　wherein the predetermined condition relates to a data size of the packet, wherein (1) the terminal device according to any one of - (5).
(7)
　wherein the predetermined condition relates to the geographical relationship between the relay terminal, the (1) to the terminal device according to any one of (6).
(8)
　Wherein the predetermined condition relates to the state of the relay terminal, the (1) the terminal device according to any one of (1) to (7).
(9)
　wherein the predetermined condition relates to the state of the communication path between the relay terminals, wherein (1) the terminal device according to any one of - (8).
(10)
　wherein the processing unit, in a predetermined resources configured, discovering the relay terminal by monitoring a first discovery signal from the relay terminal, any one of (1) to (9) the terminal device according to an item.
(11)
　wherein the processing unit monitors the first discovery signal in the set paging period by the base station, the terminal apparatus according to (10).
(12)
　wherein the processing unit, in a predetermined resources configured, the transmitting the second discovery signal for discovery the terminal device to the relay terminal, the (1) to any one of (9) terminal device according to claim.
(13)
　A terminal apparatus,
　packets received any base station or the terminal device or a destination, from another terminal device to determine for each packet depending on whether a predetermined condition is satisfied a processing unit, which relays to the base station
terminal device comprising a.
(14)
　wherein the processing unit, in a predetermined resources configured to transmit the first discovery signal for discovery the terminal device, the terminal device according to (13).
(15)
　wherein the processing unit, based on the received power of signals from the other terminal devices of which destination is the base station, transmitting the first discovery signal, terminal according to (14) apparatus.
(16)
　the processing unit, or on the basis of the second discovery signal transmitted from the other terminal devices in a given resources configured to relay the signal from the second terminal apparatus to the base station determining whether the terminal apparatus according to (13).
(17)
　so as to select one of the transmission destination base station or a relay terminal, determining for each packet depending on whether a predetermined condition is satisfied,
the method being executed by a processor comprising a.
(18)
　A method performed by a terminal device,
　another terminal to determine which base station or the terminal device or a destination for each packet depending on whether a predetermined condition is satisfied the packet received from the device, it, to relay to the base station
method comprising.
(19)
　the computer,
　whether any of the base station or relay terminal and the destination, determines processing unit for each packet depending on whether a predetermined condition is satisfied,
the program to function as is recorded the recording medium.
(20)
　a computer to the terminal device and the control object,
　One or a destination base station or the terminal apparatus, the packet received by the said terminal from another terminal device to determine for each packet depending on whether a predetermined condition is satisfied, the terminal device processing unit, for relaying to the base station by
a recording medium having a program recorded thereon for functioning as a.
DESCRIPTION OF SYMBOLS
[0186]
　1 system
　11 cells
　20 core network
　30 PDN
　100 base station
　200 terminal, remote terminal
　210 antenna unit
　220 radio communication unit
　230 storage unit
　240 processing unit
　241 finder
　243 determination unit
　245 transmission processing section
　300 the terminal device, a relay terminal
　310 antenna unit
　320 radio communication unit
　330 storage unit
　340 processing unit
　341 finder
　343 relay processing unit

WE claims

One or a destination base station or a relay terminal, the processing unit determines for each packet depending on whether a predetermined condition is satisfied
terminal device comprising a.
[Requested item 2]
　Wherein the predetermined condition relates to the time that has elapsed while the relay terminal is not found outgoing traffic from occurring, the terminal device according to claim 1.
[Requested item 3]
　Wherein the predetermined condition relates to the free space in the buffer for storing the transmission traffic, the terminal device according to claim 1.
[Requested item 4]
　Wherein the predetermined condition relates to latency required for the packet, the terminal device according to claim 1.
[Requested item 5]
　Wherein the predetermined condition relates to QoS (Quality of Service) required for the packet, the terminal device according to claim 1.
[Requested item 6]
　Wherein the predetermined condition relates to a data size of the packet, the terminal device according to claim 1.
[Requested item 7]
　Wherein the predetermined condition relates to the geographical relationship between the relay terminal, the terminal device according to claim 1.
[Requested item 8]
　Wherein the predetermined condition relates to the state of the relay terminal, the terminal device according to claim 1.
[Requested item 9]
　Wherein the predetermined condition relates to the state of the communication path between the relay terminal, the terminal device according to claim 1.
[Requested item 10]
　Wherein the processing unit, in a predetermined resources configured, the discovering the relay terminal of the first discovery signal from the relay terminal by monitoring, terminal device according to claim 1.
[Requested item 11]
　Wherein the processing unit monitors the first discovery signal in the set paging period by the base station, the terminal apparatus according to claim 10.
[Requested item 12]
　Wherein the processing unit, in a predetermined resources configured, transmits a second discovery signal for discovery the terminal device to the relay terminal, the terminal device according to claim 1.
[Requested item 13]
　A terminal device,
　so as to select one of the transmission destination base station or the terminal apparatus, the packet received from another terminal device to determine for each packet depending on whether a predetermined condition is satisfied, the processing unit for relaying to the base station,
the terminal device comprising a.
[Requested item 14]
　Wherein the processing unit, in a predetermined resources configured to transmit the first discovery signal for discovery the terminal device, the terminal device according to claim 13.
[Requested item 15]
　Wherein the processing unit, based on the received power of signals from the other terminal devices of which destination is the base station, transmitting the first discovery signal, the terminal apparatus according to claim 14.
[Requested item 16]
　Wherein the processing unit on the basis of the second discovery signal transmitted from the other terminal devices in a given resource is set, the signals from the other terminal device whether or not to relay to the base station determining, terminal device according to claim 13.
[Requested item 17]
　One or a destination base station or a relay terminal, determining for each packet depending on whether a predetermined condition is satisfied,
the method being executed by a processor comprising a.
[Requested item 18]
　A method performed by a terminal device,
　receiving any base station or the terminal device or a destination, from another terminal device to determine for each packet depending on whether a predetermined condition is satisfied the packet, that, to relay to the base station
method comprising.
[Requested item 19]
　The computer,
　whether any of the base station or relay terminal and the destination, the processing unit determines for each packet depending on whether a predetermined condition is satisfied
recording medium having a program recorded thereon for functioning as a .
[Requested item 20]
　The computer, to the terminal device and the control object
　the terminal one of the base station or the terminal device or a destination, from another terminal device to determine for each packet depending on whether a predetermined condition is satisfied the device receives the packet, processing unit, for relaying to the base station by the terminal device
a recording medium having a program recorded thereon for functioning as a.