[0001]This application claims the January 28, 2016 filed Chinese Patent Application No. 201610060087.0, entitled "wireless communication system and a wireless communication system, an apparatus and method" filed Chinese patent application in its entirety by reference incorporated in the present application.
FIELD
[0002]
The present application relates to wireless communication technology, and more particularly, to a secondary access authorization effectively achieved (Licensed Assisted Access, LAA) power headroom report (Power Headroom Report, PHR) in wireless communication system and a wireless communication system the method and apparatus of the system.
Background technique
[0003]
With the evolution of wireless networks, carrying more and more of service, thus requiring additional spectrum resources to support a large number of data transmission. Cellular wireless network operators (Long Term Evolution, LTE) network on the basis of, began to explore how to use unlicensed spectrum resources such as 5GHz ISM (Industrial Scientific Medical, Industrial Scientific Medical) band using existing Long Term Evolution. On the other hand, WiFi wireless industry is also more WiFi system will be deployed in an unlicensed frequency band. A communication system between different operators have equal right to use unlicensed frequency bands. How fair and effectively use the same unlicensed frequency band is already the industry needs to immediately solve the problem. Currently the industry generally reached consensus on the need to use unlicensed frequency band that is under the authority of band aid, and provide services to the terminal by way of carrier aggregation.
[0004]
In the LTE system, a user equipment (UE) through a Media Access Control (Media Access Control, MAC) layer of a power headroom report to the base station (the eNB), uplink transmission power of the power headroom indicates the maximum transmission power of the user equipment and the user equipment estimates the difference between the base station and is an important basis for uplink power control and scheduling. Since each communication system has LAA system resource unlicensed frequency bands of equal usage right, i.e., unlicensed channels in the frequency band is not always idle, and is also typically present hidden node problem in the LAA system which will result in a less large interference, therefore, how to effectively ensure that LAA system user equipment power headroom report that the disclosure is to solve the problem.
[0005]
SUMMARY
[0006]
It gives a brief summary of the present disclosure hereinafter, in order to provide a basic understanding of some aspects of the present disclosure. However, it should be understood that this summary is not an exhaustive overview of the disclosure. It is not intended to be used or the critical portion of the present disclosure determines an important part of, nor is it intended to limit the scope of the present disclosure. Its sole purpose is to present some concepts in a simplified form on the present disclosure, as a prelude to the more detailed description that is presented later.
[0007]
In view of the above problems, an object of the present disclosure is to provide an apparatus and method for effectively achieved LAA system power headroom reported by the radio communication system and a wireless communication system.
[0008]
According to an aspect of the present disclosure, there is provided an apparatus in a wireless communication system, the apparatus comprising a processing circuit, the processing circuit is configured to: detect whether the power headroom report satisfies a predetermined triggering event; and if the power headroom satisfies a predetermined reporting trigger event, the trigger will be reported to the user equipment power headroom to the base station, wherein the predetermined power headroom report trigger event comprises at least one of the following events: a first event, the detection of an unauthorized channel is idle band; and a second event, receiving the uplink scheduling grant signaling from the base station (UL grant).
[0009]
According to embodiments of the present disclosure preferred embodiment, the predetermined power headroom report triggering event further comprises a set of predefined events, a set of the predefined event comprises at least one of: prohibiting power headroom reporting timer expires since the last power headroom and reported pathloss variation amount exceeds a predetermined threshold value; periodic power headroom report timer expires; configuration or reconfiguration of the power headroom reporting function; activated secondary carrier; add primary carrier; and prohibiting power headroom reporting timer expires, MAC layer uplink resource for transmission of new data, and the distance variation exceeds a predetermined threshold power compensation value last reported power headroom.
[0010]
According to another preferred embodiment of the present disclosure, the processing circuit is further configured to: upon detection of the event satisfies any of a set of predefined events, event if the first or second event is not satisfied, the current trigger event is canceled, and upon detection of the event satisfies the first or second event trigger will be reported to the user equipment power headroom to the base station.
[0011]
According to another preferred embodiment of the present disclosure, the processing circuit is further configured to: upon detection of the event satisfies any of a set of predefined events, if the second event is not satisfied, the event trigger currently suspended until the detection of to meet when the second event, the trigger will be reported to the user equipment power headroom to the base station.
[0012]
Embodiment, further comprising power headroom identification uplink scheduling grant signaling associated with the power headroom in accordance with another preferred embodiment of the present disclosure.
[0013]
According to another preferred embodiment of the present disclosure, to be reported by power headroom MAC control element (control element), and to identify new reserved bit or bits of the MAC control element is represented.
[0014]
According to another embodiment of the present disclosure preferably, by an unauthorized power headroom on the secondary carrier band is reported to the base station.
[0015]
According to another preferred embodiment of the present disclosure, power headroom is reported to the base station via shared channel (Physical Uplink Shared Channel, PUSCH) is multiplexed with the physical uplink.
[0016]
According to another embodiment of the present disclosure of the preferred apparatus is a user equipment and the user equipment further comprises: a communication unit configured to report the power headroom to the base station.
[0017]
According to another aspect of the present disclosure also provides a wireless communication system, comprising: a user equipment, comprises a first processing circuit, a first processing circuit is configured to: detect whether the power headroom report satisfies a predetermined trigger event, and if reporting power headroom satisfies a predetermined trigger event, the trigger will be reported to the user equipment power headroom to the base station; and a base station, comprising a second processing circuit, second processing circuit is configured to: on the received power headroom demodulates and scheduling for uplink power control, wherein the predetermined power headroom report trigger event comprises at least one of the following events: a first event, the detection of an unauthorized channel is idle band; and a second event, received from the base station uplink scheduling grant signaling.
[0018]
According to embodiments of the present disclosure preferred embodiment, the second processing circuit is further configured to demodulate the power headroom, to determine the identification of the uplink scheduling grant signaling associated power headroom.
[0019]
According to yet another aspect of the present disclosure also provides a method for a wireless communication system, the method comprising: detecting whether a power headroom report satisfies a predetermined triggering event; and if the power headroom report satisfies a predetermined trigger event, the trigger will be a user power headroom reporting to the base station apparatus, wherein the predetermined power headroom report trigger event comprises at least one of the following events: a first event, the detection of an unauthorized channel is idle band; and a second event, received from the base station uplink scheduling grant signaling.
[0020]
According to other aspects of the present disclosure is also provided for implementing the above-described computer program code recorded thereon a computer program product and method of the present disclosure and the computer on which the computer program code for realizing the above-described method according to the present disclosure readable storage media.
[0021]
Power headroom according to embodiments of the disclosure, can be effectively achieved in the LAA system user equipment reporting.
[0022]
In the present specification are given in the following section embodiments disclosed in other aspects of the embodiment, wherein, for a detailed description of preferred embodiments of the present disclosure embodiment fully disclosed embodiments without applied thereto is defined.
BRIEF DESCRIPTION
[0023]
The present disclosure may be better understood by reference to the following detailed description given in conjunction with the accompanying drawings, in which the same or similar reference numerals in the drawings to refer to the same or like parts. The drawings together with the detailed description are included in a part of the present specification and form of the specification, it serves to further illustrate the embodiments and explain the principles and advantages of the present disclosure of the preferred embodiment of the disclosure. among them:
[0024]
FIG. 1 is a block diagram illustrating a functional configuration example of a wireless communication system according to the present embodiment of the disclosed embodiment of the apparatus;
[0025]
FIG 2 is a schematic diagram illustrating an example of a possible scenario of the present embodiment LAA system embodiment disclosed in the reported power headroom;
[0026]
3A and 3B are schematic diagrams illustrating a first embodiment of the system according to the case LAA present disclosure in a power headroom report;
[0027]
FIG 4 is a schematic diagram of a first example of the present disclosure for the case of a first embodiment of the solution of the embodiment shown;
[0028]
FIG 5 is a schematic diagram illustrating a second exemplary embodiment of the solution for the case of the first embodiment of the present disclosure;
[0029]
6A and FIG. 6B is a schematic diagram illustrating a second case reported by the system of the present disclosure LAA embodiment of power headroom;
[0030]
FIG 7 is a diagram showing a second exemplary scenario for the solution of the embodiment according to embodiments of the present disclosure;
[0031]
8A and 8B are schematic diagrams illustrating the system according to the third case of the present disclosure LAA embodiment of power headroom reporting;
[0032]
9 is a diagram illustrating an example solution for the third case of the embodiment of the present disclosure is shown;
[0033]
FIG 10 is a block diagram illustrating a functional configuration example of a wireless communication system according to the present embodiment of the disclosed embodiment of the apparatus;
[0034]
FIG 11 is a block diagram showing a configuration example of the wireless communication system according to an embodiment of the disclosure;
[0035]
FIG 12 is a flowchart showing an example of a process of a method of a wireless communication system according to embodiments of the present disclosure;
[0036]
FIG 13 is a block diagram illustrating a configuration of a personal computer as the information processing apparatus of the present disclosure may be employed in the embodiment of the embodiment;
[0037]
FIG 14 is a block diagram of a first example illustrating a schematic configuration of the present disclosure may be applied technology evolved Node (eNB); and
[0038]
FIG 15 is a block diagram illustrating a second example of a schematic configuration of eNB may be applied in the art of the present disclosure;
[0039]
FIG 16 is a schematic block diagram of an exemplary configuration of an application technology of the present disclosure may be a smartphone; and
[0040]
FIG 17 is a block diagram illustrating a schematic configuration of the car navigation apparatus disclosed technology may be applied.
Detailed ways
[0041]
The exemplary embodiments of the present disclosure will be described below in conjunction with the accompanying drawings. For clarity and conciseness, in the specification are not all features of an actual implementation. However, it should be understood that many decisions must be made to the specific embodiments of the development of any such actual embodiment of the process in order to achieve the developer's specific goals, such as compliance with those restrictions related systems and services, and these restrictions may be subject to change with different embodiments. In addition, it should be understood that, although the development work can be very complex and time-consuming, but the benefit of this disclosure to those skilled in the, this development is only a routine task.
[0042]
Here, also be noted that, in order to avoid unnecessarily obscure the details of the present disclosure, the drawings only shows a program according to the present disclosure closely related device structures, and / or processing steps, omitted additional details of this little public relations.
[0043]
Next, embodiment 17 of the present disclosure will be described in detail with reference to FIG. 1 to FIG.
[0044]
LAA present disclosure relates to a communication system, i.e., the presence of the unlicensed band operation of the main carrier of (Primary Component Carrier, PCC) and operate in the wireless communication system in a frequency band unauthorized or more secondary carriers (Secondary Component Carrier, SCC) and it supports carrier aggregation (carrier Aggregation, CA) between the carriers, where the unlicensed frequency bands, for example, may be a WiFi 2.4GHz or 5GHz, a television or a licensed band radar frequency band other non-cellular networks. Further, in the conventional LTE standard, typically support up to five carriers (i.e. one primary component carrier and the four secondary carriers) between the polymerization. However, it should be understood that the present disclosure is not limited to this, with the future development of mobile communication technologies, techniques of this disclosure may be equally applicable to an unlicensed frequency band and a higher frequency where more inter carrier aggregation or limited conventional modulation scheme. It should also be noted that in the prior art, in general, each cell corresponding to the carrier at one particular frequency, such as a primary cell (the Pcell) corresponding to the main carrier (the PCC), a secondary cell (Scell) corresponding to the auxiliary members carrier (the SCC), and therefore in the present disclosure and is not a clear distinction between the cell carriers of the title, the present art can understand the meaning of art to which it refers. In addition, with the development of communication technology, there may further include an unlicensed frequency band only without the assistance of a licensed band communication systems, and techniques of this disclosure are equally applicable to such systems.
[0045]
Next, FIG. 1 depicts a functional configuration example of a wireless communication system according to the present embodiment of the disclosed embodiments of the apparatus will be first described. FIG. 1 is a block diagram illustrating a functional configuration example of a wireless communication system according to the present embodiment of the disclosed embodiment of the apparatus.
[0046]
1, the apparatus 100 may include a processing circuit 110. Incidentally, the device 100 can either include a processing circuit 110 may also include a plurality of processing circuit 110. Device 100 is provided in a wireless communication system, the user equipment side. Further, the apparatus 100 may be a user equipment, and in this case, the apparatus 100 may further include a communication unit 120 such as a transceiver and the like.
[0047]
Further, the processing circuit 110 may include a variety of discrete functional units to perform various functions and / or operations. Incidentally, these functional units may be physical or logical entities, and the different names may be realized by means of the same physical entity.
[0048]
For example, as shown in Figure 1, the processing circuit 110 may include a detecting unit 111 and the trigger 112 unit.
[0049]
The detection unit 111 may be configured to detect whether the power headroom report satisfies a predetermined trigger event.
[0050]
Triggering unit 112 may be configured to meet predetermined power headroom reporting if a trigger event, the trigger will be reported to the user equipment power headroom to the base station.
[0051]
Here the predetermined power headroom report triggering event may include at least one of the following events: a first event, the idle channel is detected on the unlicensed frequency band; and a second event, the received uplink scheduling grant signaling from the base station.
[0052]
LAA supports cross-carrier scheduling (Cross-carrier Scheduling) and self-carrier scheduling (Self-scheduling). For the uplink cross-carrier scheduling, scheduled carriers located Pcell on the licensed band; for the uplink from the carrier scheduling, scheduled carriers located Scell ​​on band unlicensed, and therefore self-carrier scheduling comprises two channel detection process (Listen-Before-Talk, LBT), i.e., the eNB detects that the channel, if idle, transmit UL grant; UE detects the channel and, when idle the transmission is scheduled PUSCH.
[0053]
Mode for detecting whether the channel is idle may include, but are not limited to, for example, energy detection (i.e., detection signal intensity and compared with the energy detection threshold value, if the signal strength is above the threshold, it indicates that the channel is busy), the preamble detected (preamble detection), detection of the beacon (beacon detection) and whether the information obtained from the channel is idle or central database manager. Wherein, energy detection, preamble detection, and detecting beacons are perceptually (Sensing) directly through the device itself. Detecting whether the channel is idle manner it is known in the art and are not repeated here.
[0054]
In the case of self-carrier scheduling, if the eNB detects that the channel is busy you can not transmit UL grant, or even if the eNB has successfully transmitted a UL grant, however if the UE is disturbed (e.g., hidden node problem) effect can not be normally demodulated UL grant thereby unable to obtain the parameters used to calculate the power headroom, which will affect the normal UE power headroom is calculated and reported.
[0055]
Specifically, defines two types of power headroom report (the PHR), to the type 1 (Type 1), for example, for the serving cell c transmit the PUSCH subframe i, not simultaneously transmit the PUCCH power headroom is as follows the formula:
[0056]
PH type1,c(i)＝P CMAX,c(i)-{10log 10(M PUSCH,c(i))+P O_PUSCH,c(j)+α c(j)·PL c+Δ TF,c(i)+f c(i)} [dB]
[0057]
Wherein the parameter M the PUSCH, C (I) and F C (I) is obtained by the UL grant to the UE's. In other words, if the UE can not normally receive UL grant, UE power headroom can not be calculated and reported properly.
[0058]
On the other hand, since the carrier scheduling or whether it is cross-carrier scheduling for uplink transmission LAA system for, prior to uplink transmission UE should detect unauthorized whether the channel is idle on the band, if the UE detects the channel is busy can not be scheduled transmission the PUSCH, although this time you can still report the UE power headroom through Pcell, but in this case, no actual UE uplink transmission, this time reported power headroom is meaningless, but will increase the signaling overhead. These situations will affect the normal UE power headroom reported to eNB, in FIG. 2 shows an example of such situations may affect the reported power headroom. FIG 2 is a schematic diagram illustrating an example of a possible scenario of the present disclosure LAA system embodiment of power headroom reporting.
[0059]
As shown, in FIG marks ①, ② and ③ respectively 2 following three situations that may affect the power headroom reported:
[0060]
The first situation: in case of self-carrier scheduling, the eNB detects the channel is busy, you can not send UL grant, so that the UE can not calculate and report the power headroom to the eNB;
[0061]
Second case: in the case of self-carrier scheduling, eNB detects channel idle and successfully transmitted UL grant, the UE affected by interference, such as hidden nodes can not be normally demodulated UL grant; and
[0062]
The third situation: UE detects the channel is busy, the PUSCH scheduled transmission is not, at this time there is no actual uplink transmission, the UE reports the power headroom is meaningless.
[0063]
As can be seen, the first case and the second case it may only appear in the case of self-carrier scheduling, in the case of cross-carrier scheduling, the base station, a first case so there is no UL grant to the user equipment by Pcell and the second problem situations. However, both the third case are likely to occur in the case of self-carrier scheduling or cross-carrier scheduling, which is due to the system in the LAA, the UE scheduled Scell ​​transmitted through the PUSCH, and therefore always necessary to detect the unlicensed band channel It is free.
[0064]
The present invention is for the above situation may affect the normal reporting power headroom exist in the system and make the LAA, while the prior art has not been discussed on LAA system power headroom report problems. Therefore, LAA system for power headroom reporting, event triggered reporting in addition to the traditional power headroom on the licensed band defined in the prior art addition, the present disclosure also newly defined in the first event and a second event. Traditional power headroom report trigger event may include: a power headroom report prohibit timer (prohibitPHR-Timer) exceeds a predetermined threshold value and the time-out (e.g., dl-PathlossChange) pathloss change from the last reported power headroom; periodic power headroom report timer (periodicPHR-timer) timeout; configure or reconfigure the power headroom reporting function; activated secondary carrier; add primary carrier; and prohibiting power headroom reporting timer expires, MAC layer uplink resource for new data transmission, and exceeds a predetermined threshold value (e.g., dl-PathlossChange) power variation compensation value from the last reported power headroom.
[0065]
That is, preferably, in the present embodiment of the present disclosure, the predetermined power headroom report trigger event may further comprise a set of predefined events, the set of predefined events may include the above conventional power headroom report trigger event one or more of .
[0066]
Further, it should be understood that, as described above, in the LAA system, even if the processing circuit 110 detects that meets any one or more conventional power headroom report trigger event, and if said first case to the third case has occurred in this case of one or more conditions, the UE can not normally report the PHR to the eNB. Thus, preferably, in the disclosed embodiment of the present embodiment, when the processing circuit 110 detects the event satisfies any of a set of predefined events, if the first event or the second event is not satisfied, the current trigger event may be canceled and upon detection of the first event or the second event satisfied, triggers the UE reports the power headroom to the eNB. When Alternatively, the processing circuit 110 detects the event satisfies any of a set of predefined events, if the second event is not satisfied, the current trigger event may be pending until satisfied upon detection of a second event trigger the user equipment power headroom reporting to the base station.
[0067]
In both scenarios, in the case of cancellation of the current trigger events, will continue to detect whether meet other triggering event, if it detects a trigger event to meet other again and this time also meet the first incident or second event, it can trigger the UE reporting power headroom, which is equivalent to the new definition of the triggering event and the original PHR trigger event side by side. In contrast, in the case pending the current trigger event, the trigger will ignore the other events focus only meets the second event, and meet once a second event, you can trigger UE reporting power headroom, which is equivalent to the original the PHR after the triggering event adds a new action, namely, the detection meets the second event.
[0068]
Hereinafter, respectively for the above three cases, the detailed description reported LAA system according to the present embodiment of the disclosure in power headroom.
[0069]
The first case
[0070]
3A and 3B are schematic diagrams illustrating a first embodiment of the case of the present embodiment LAA system disclosed in the reported power headroom.
[0071]
3A shows an example of a typical arrangement of the LAA system, wherein, the eNB represents a base station, the AP indicates a WiFi access point, and UE represents a user equipment. eNB and the UE may be utilized and can also be licensed band (e.g., WiFi band) communicate using an unlicensed frequency band.
[0072]
3A and 3B, in the case of self-carrier scheduling, eNB needs to detect whether the channel is idle before transmitting the UL grant. If the channel is idle, the eNB UL Grant is successfully transmitted (e.g., as shown in FIG. 3B UL grant1), the UE may be based on the power headroom report its UL grant1, the same applies to the remaining figures of UL grant1 based and UL grant1 of PHR. If the channel is busy UL grant is not transmitted, so that the UE can not be calculated using the power headroom parameter included in UL grant. At this time, if the power headroom reporting to meet any conventional triggering event (e.g., periodicPHR-Timer times out), since the UE does not receive UL grant can not be calculated power headroom, as in FIG. 3B, since the UE does not receive UL grant2, therefore PHR trigger at this time of failure. For this situation, the embodiment of the present disclosure provides two solutions.
[0073]
FIG 4 is a schematic diagram of a first example of the present disclosure for the case of a first embodiment of the solution of the embodiment shown.
[0074]
In the case of the first solution, if the triggering event (e.g., periodicPHR-Timer times out) satisfies the PHR any conventional, can not be sent at a time when the channel is busy since the UL grant eNB so that the UE can not receive the UL grant, and therefore, can be UE PHR trigger event at this time pending, and until the reporting power headroom when you receive a new UL grant on the same Scell. As can be seen, in the first solution, is a traditional PHR trigger event after the addition of a follow-up action, ie, reporting power headroom when new UL grant is received on the same Scell. At this point, UE will ignore the other PHR trigger event, but only concerned about whether the triggering event received UL grant from the eNB satisfaction.
[0075]
4, assume for example that since periodicPHR-Timer timeout triggered power headroom reporting, but because this time is not sent eNB UL grant2, the UE can not report power headroom, then the UE will suspend the current trigger event, and PHR will be triggered before transferring to UL from the eNB grant3 when reporting power headroom received on the same Scell.
[0076]
PeriodicPHR-Timer timeout to trigger an event, for example, mentioned here may include, for example suspended following two scenarios:
[0077]
(1) in meeting periodicPHR-Timer timeout triggering event, the UE maintain reciprocal counter to "0", but has not received a new UL grant, the UE counter at this time and therefore remains in the "0" does not move until after the UE receives a new UL grant on this Scell ​​reported power headroom, and then at a counter count and the corresponding power headroom report in accordance with the original protocol.
[0078]
(2) is satisfied periodicPHR-Timer timeout trigger event, the UE maintain the countdown counter e.g., "20", the UE according to the following transport format (e.g. DSUUUDSUUU) Analyzing eNB should now have been sent now UE UL grant does not detect any downlink data indicating eNB end of the channel is detected busy, not issued UL grant, and the next maximum channel occupation time (MCOT, maximum channel occupation time) eNB can no longer detect the channel sent UL grant, and UE end MCOT counter within this time to "0." In this case, UE can directly counter to pause in the "20" until after the UE receives a new UL grant on this Scell, then the counter from "20" to continue the countdown, when the counter to "0" according to the latest the UL grant reporting PHR.
[0079]
These are only two examples are given in a case where the processing program "hang" the current trigger event, those skilled in the art may be conceivable to achieve apparent "Suspend" mode of operation depending on the specific implementation requirements, and that these same DETAILED DESCRIPTION fall within the scope of the present disclosure.
[0080]
FIG 5 is a schematic diagram illustrating a second exemplary embodiment of the solution for the case of the first embodiment of the present disclosure.
[0081]
In the second solution, if the triggering event (e.g., periodicPHR-Timer times out) satisfies the PHR any conventional, can not be sent at a time when the channel is busy since the UL grant eNB so that the UE can not receive the UL grant, and therefore, can be UE PHR trigger event canceled at this time, and until the reporting power headroom when new UL grant received in the Scell. It can be seen in the second solution, a new definition of a PHR trigger event, that is, receives a new UL grant on the Scell. The new PHR trigger event with the traditional original agreement PHR trigger event is a tie, and when to meet any trigger event can trigger UE reporting power headroom.
[0082]
5, assume for example that due periodicPHR-Timer timeout triggered power headroom reporting, but because this time not issued eNB UL grant2, the UE can not report the power headroom, so the UE cancel the current trigger events, and meet PHR trigger event newly defined reporting power headroom (ie, receives a new UL grant on Scell) time.
[0083]
Above for the eNB may be due to the channel is busy without the UL grant sent case offers two solutions in the case of self-carrier scheduling, to achieve effective reporting of PHR.
[0084]
The second scenario
[0085]
6A and FIG. 6B is a schematic diagram illustrating a second scenario LAA reported by the system of the present disclosure of the embodiment of power headroom.
[0086]
6A and 6B, in the case of self-carrier scheduling, assuming a WiFi access point (WiFi AP) near UE, but within the sensing area of ​​the UE, the eNB AP is not within the sensing area of ​​an eNB detecting channel idle and transmit UL grant to the UE, but this time because the UE may hidden node (i.e., above a WiFi AP) problem can not be normally demodulated UL grant, which is due to a lot of interference an AP channel thus possible for the UE not idle. In this case, eNB UE transmits the UL grant but not be demodulated correctly. If at this time to meet the PHR triggering event (eg periodicPHR-Timer timeout), but because the UE can not demodulate the latest UL grant, will power headroom report a problem occurs.
[0087]
In particular, because under normal circumstances, the eNB default power headroom reported by the UE based on the latest UL grant is calculated, but in such a case, since the UE can not demodulate the latest UL grant, and therefore at this time the reported power headroom the amount may be calculated based on a previous successful demodulation of the UL grant. Without notifies the eNB, the eNB may affect subsequent uplink scheduling and power control operation.
[0088]
In order to solve the power headroom report the problem in this case, the present disclosure proposes a UE identity when the UL grant to the eNB reports the power headroom, and can be simultaneously reported power headroom associated with (e.g., ID) reported to the eNB to point out to the eNB reported by PHR is calculated based on which UL grant. In FIG. 7 shows the case for the second solution. FIG 7 is a schematic diagram illustrating an example of the present solution for the second case the disclosed embodiment.
[0089]
As shown in Figure satisfied when periodicTimer timeout PHR trigger event, if the UE due to the hidden node problem can not be demodulated UL grant2 eNB issued at this time, the UE indicates that the power headroom when reporting power headroom to the eNB example 7 amounts are based on a computed UL grant1.
[0090]
Preferably, by the power headroom MAC control element (control element) to be reported, and the MAC control element may be in the reserved bit or bits to represent the new UL grant with the identification of the associated power headroom. In particular, according to the existing protocol, the PHR has three formats, respectively, for a serving cell format, the format for carrier aggregation for a plurality of serving cells and a double format connection. In all three formats, each serving cell for a reserved bit ( "R") are two bits, two bits can be represented using this calculated PHR is based on which of UL grant. For it eNB, eNB can understand this is based on which UL grant PHR reported by demodulation reported by the UE PHR. According to this embodiment, by using a reserved bit in the existing signaling formats, to maintain compatibility with existing standards and no increase in signaling overhead. Alternatively, with the development of future mobile communication technologies, PHR may need to carry additional information such PHR format may increase new position, so that these additional bits may also be used to inform the UL grant identification.
[0091]
It should be noted that, although the embodiment shows an example of the UL grant to the identified eNB notifies reported power headroom associated with, those skilled in the art can also be selected in other ways according to actual needs, the present disclosure is not limited in this .
[0092]
The third case
[0093]
8A and 8B are schematic diagrams showing an example of a third embodiment of power headroom situation of the present disclosure is reported.
[0094]
With the former two cases differ, either self-carrier scheduling or cross-carrier scheduling, since the uplink transmission of the UE in the LAA system is by Scell, so the UE should detect the channel before the uplink transmission LAA system, if the channel is detected UE can not transmit the busy scheduled PUSCH, and if at this time to meet the PHR triggering event (eg periodicPHR-Timer timeout), but no actual UE uplink transmission, the UE reports at this time that PHR is meaningless, resulting in signaling overhead waste, 8A and 8B.
[0095]
For this case, in order to reduce the signaling overhead, the present disclosure proposes the following solution: PHR triggering event is canceled at this time, and a new definition of a PHR trigger event (i.e., an idle channel is detected on the unlicensed band), the new PHR trigger event with the traditional original agreement PHR trigger event is a tie, and when to meet any trigger event can trigger UE reporting power headroom.
[0096]
9 is a diagram illustrating an example solution for the third case of the embodiment of the present disclosure is shown. 9, assume for example that since periodicPHR-Timer timeout triggered power headroom reporting, but this time because the UE detects the channel is busy and can not transmit the PUSCH scheduled, i.e., when no actual uplink transmission, then UE cancels when the current power headroom reporting PHR triggering event, and to meet the newly defined event trigger (i.e., an idle channel is detected on the unlicensed band).
[0097]
As can be seen, similar to the case of the second solution to the first embodiment described above and shown in FIG. 9 with reference to FIG. 5, except that only the scheme shown in FIG 5 is only possible for the carrier since the scheduling of case, the embodiment shown in Figure 9 for the case of self-carrier scheduling and cross-carrier scheduling can be applied.
[0098]
It should be noted, in the power headroom reporting to 120, as may be reported by Pcell eNB to the eNB as in the prior art apparatus 100 through the communication unit. However, as described above, the techniques of this disclosure described above can also be applied only system present band unauthorized, and in this case, may be multiplexed with the PUSCH through the power headroom report to the eNB through Scell.
[0099]
In addition, it should be noted that while the above describes three PHR were reported LAA system possible scenarios, but in fact, these three cases, one or more situations may occur simultaneously, so that those skilled in the art may also be carried out according to the principles of the present disclosure of the above-described composition solution to solve the problems in the respective case, and such combinations should also be considered within the scope of the present disclosure.
[0100]
Next, the radio communication apparatus described base station side of the system 10 with reference to FIG. FIG 10 is a block diagram illustrating a functional configuration example of a wireless communication system according to the present embodiment of the disclosed embodiment of the apparatus.
[0101]
10, apparatus 1000 may include a processing circuit 1010. Incidentally, both apparatus 1000 may comprise a processing circuit 1010 may also include multiple processing circuit 1010. Further, the device 1000 may be a base station, and in this case, device 1000 may further include a communication unit 1020, such as a transceiver or the like, and the like.
[0102]
As previously described, in the same manner, the processing circuit 1010 may also include a variety of discrete functional units to perform various functions and / or operations. These functional units may be physical or logical entities, and the different names may be realized by means of the same physical entity.
[0103]
As shown, the processing circuit 1010 may include a demodulating unit 1011, the demodulation unit 1011 may be configured to power headroom 10 demodulates the received pairs, and scheduling for uplink power control.
[0104]
Preferably, the demodulation unit 1011 may be configured to demodulate the power headroom, to determine the identification of the uplink scheduling grant signaling associated power headroom. As described above, in order to solve the eNB UL grant issued in practice UE power headroom not be demodulated in the case where the UL grant in this case the problem reported, the UE reports to the eNB simultaneously with the UL grant and power headroom identification , the eNB may be learned so that the currently received power headroom is calculated based on which of the UL grant, to assist in the uplink scheduling and power control by demodulating the received power headroom.
[0105]
Further, in the case of self-carrier scheduling, the processing circuit 1010 may also be configured to detect a channel before transmitting UL grant is idle (e.g., by an energy detection, etc.), and only transmit UL grant in the case where the channel is idle.
[0106]
The communication unit 1020 may be configured to send and receive UL grant to the UE from the UE power headroom report (PHR).
[0107]
It should be understood, the function of the base station side described herein is a functional configuration example of the user device side of the above-described configuration example corresponding to the respective position and therefore not described above refer to the detailed description is not repeated.
[0108]
Furthermore, it should be noted that although the specific embodiments described herein with reference to the functions of the user-side equipment and the base station side device configuration example, it should be understood that this is merely exemplary and not limiting, and those skilled in the art in accordance with principles of the present disclosure may be while the above-described functional configuration is configured, for example, additions, combinations, and / or delete functional units, etc., and such variations should be considered within the scope of the present disclosure.
[0109]
Next, the radio communication system of the present embodiment of the disclosed embodiments will be described. FIG 11 is a block diagram showing a configuration example of the wireless communication system according to an embodiment of the disclosure.
[0110]
As shown, the wireless communication system may include user equipment 111 100 1110 1120 and a base station, wherein the base station 1120 and user device 1110, respectively, may include a processing circuit 1111, and a processing circuit 1121, and optionally may further include a communication unit 1112, and The communication unit 1122.
[0111]
It should be noted, here, the base station 1120 and user device 1110 respectively have the same configuration as described above with reference to FIG. 1 and the user equipment 10 and the base station 100 described with 1000, described in details thereof will not be repeated.
[0112]
Next, the process described exemplary method performed in a user equipment side 12 with reference to FIG. FIG 12 is a flowchart showing an example of a process of a method of a wireless communication system according to embodiments of the present disclosure.
[0113]
12, according to the method of this embodiment begins at step S1210. In step S1210, the detection meets a predetermined power headroom report trigger event. Then, the method proceeds to step S1220. In the step S1220, S1210, if it is detected in the power headroom report satisfies a predetermined trigger event, the trigger will be reported to the user equipment power headroom to the base station.
[0114]
Preferably, the predetermined power headroom report trigger event comprises at least one of the following events: a first event detected on the unlicensed band channel is idle; and a second event, the received uplink scheduling grant signaling from the base station.
[0115]
Preferably, the predetermined power headroom report trigger event may further comprise a set of predefined events, a set of predefined event comprises at least one of: prohibiting power headroom reporting timer expires and the last reported power headroom distance path loss change exceeds a predetermined threshold value; periodic power headroom report timer expires; configuration or reconfiguration of the power headroom reporting function; activated secondary carrier; add primary carrier; and prohibiting power headroom reporting timer expires, MAC resource for uplink layer in the transmission of new data, and the distance value exceeds a predetermined threshold power variation compensation value last reported power headroom.
[0116]
Preferably, the method further comprising: upon detection of the event satisfies any of a set of predefined events, event if the first or second event is not satisfied, the current trigger event is canceled, and the detected event satisfies the first or the second event, the trigger will be reported to the user equipment power headroom to the base station.
[0117]
Preferably, the method further comprising: upon detection of the event satisfies any of a set of predefined events, if the second event is not satisfied, the event trigger currently pending until satisfied upon detection of a second event trigger the user equipment power headroom reporting to the base station.
[0118]
Preferably, further comprising power headroom authorized identification signaling with the scheduling of uplink power headroom associated.
[0119]
Preferably, the power headroom MAC control element to report by, and to identify new reserved bit or bits of the MAC control element to indicate
[0120]
Preferably, the power headroom on the secondary carrier by unlicensed frequency band is reported to the base station.
[0121]
Preferably, the power headroom is reported to the base station via a shared channel and physical uplink multiplexing.
[0122]
It should be understood, the method described herein is the apparatus described in FIG. 1 embodiment corresponding to the embodiment above with reference to, so here the method of the contents have not been described in detail in the examples, see example apparatus above the corresponding user equipment side of the corresponding description is not repeated.
[0123]
It should be noted that although the above described process according to an exemplary method of a wireless communication system according to the disclosed embodiment, but this is only an example, and not limitation, and those skilled in the art according to the foregoing embodiment may be modified principles of the present disclosure , for example, may be made to various embodiments, the step of adding, deleting, or a combination, and that such modifications fall within the scope of the present disclosure.
[0124]
It should be understood, by order of the storage medium, and program product disclosed embodiments machine executable may also be configured to perform the method embodiment corresponding to the above-described embodiment of the apparatus, and therefore not described in detail herein content can refer to the previous corresponding describing the location, descriptions are not repeated here.
[0125]
Accordingly, for bearing the machine-executable instructions comprising a storage medium comprising program product is also disclosed in the present invention. The storage media include, but are not limited to, floppy diskettes, optical disks, magneto-optical disk, memory card, memory stick and the like.
[0126]
Further, it should be noted that the above-described series of processes and apparatus may also be implemented by software and / or firmware. In the case of implementing by software and / or firmware, or a network from a storage medium to a computer having a dedicated hardware configuration, for example, general-purpose personal computer shown in FIG. 131,300 program constituting the software is installed, various programs, which is installed in the computer when, to perform various functions, and so on. FIG 13 is a block diagram illustrating an example of configuration of a personal computer as the information processing apparatus of the present embodiment may be employed in the embodiment of the disclosure.
[0127]
In Figure 13, a central processing unit (CPU) 1301 performs various processes in accordance with a program read only memory (ROM) 1302 or a program stored in the storage section 1303 to a random access memory 1308 is loaded from the (RAM). In the RAM 1303, it is also necessary when storing data necessary for various processes performed when the CPU 1301 and the like.
[0128]
CPU 1301, ROM 1302 and RAM 1303 are connected to one another via a bus 1304. Input / output interface 1305 is also connected to the bus 1304.
[0129]
The following components are connected to the input / output interface 1305: an input section 1306 including a keyboard, mouse and the like; an output section 1307 including a display such as a cathode ray tube (CRT), liquid crystal display (LCD) and the like, a speaker, and the like; a storage section 1308 including a hard disk and the like; and a communication section 1309 including a network interface card such as a LAN card, a modem and the like. Via the network communication section 1309 performs a communication process such as the Internet.
[0130]
A drive 1310 is also connected to the input / output interface 1305. A removable medium 1311 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory and the like is mounted on the drive 1310, so that a computer program read therefrom is installed into the storage section 1308 as required.
[0131]
In the case where the foregoing series of processes by software, from a network such as the Internet or a storage medium such as the removable medium 1311 configured to install the software program.
[0132]
Those skilled in the art will appreciate, this storage medium is not limited as shown in FIG. 13 where a program is stored, distributed separately from the device to provide a removable medium 1311 program to the user. Removable medium 1311 include the magnetic disk (including a floppy disk (registered trademark)), CD (compact disc read-only memory that contains (CD-ROM) and digital versatile disc (DVD)), magneto-optical disk (including a Mini Disk (MD) (registered trademark )) and a semiconductor memory. Alternatively, the storage medium may be a ROM 1302, a storage section 1308 comprising a hard disk, etc., which the program is recorded and which is distributed to a user equipment together.
[0133]
The techniques of this disclosure can be applied to various products. For example, the base station mentioned in the present disclosure may be implemented as any type of evolved Node B (eNB), such as a macro eNB, and a small eNB. Small eNB may cover less than a macro cell eNB cell, such as a pico eNB, the eNB and the micro family (femto) eNB. Alternatively, the base station may be implemented as any other type of base station, such as base transceiver station NodeB and (Base Transceiver Station, BTS). The base station may include: a body configured to control wireless communication (also referred to as base station apparatus); and one or more remote radio heads disposed at different places of the main body (Remote Radio Head, RRH). Further, the following various types of terminals can be described by a semi-persistently or temporarily perform the base station functions as a work station.
[0134]
For example, the present disclosure may be mentioned a UE as a mobile terminal (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable / dongle type mobile router and a digital camera) or a vehicle-mounted terminal (such as car navigation devices). The UE may also be implemented to perform a machine to machine (M2M) communication terminals (also referred to as machine type communication (MTC) terminal). Further, UE may be a wireless communication module on each terminal attached to the terminal (such as a wafer, comprising a single integrated circuit module).
[0135]
It will be described below with reference to FIGS. 14 to 17 according to the application example of the present disclosure.
[0136]
[Application Example of the base station on]
[0137]
(First Application Example)
[0138]
FIG 14 is a block diagram of a first example of a schematic configuration of the eNB art shows the present disclosure may be applied. eNB 1400 includes one or more antennas 1410 and base station apparatus 1420. Each base station apparatus 1420 and antenna 1410 may be connected to each other via a RF cable.
[0139]
Each antenna 1410 includes a single or a plurality of antenna elements (such as including a multiple input multiple output (MIMO) antennas in a plurality of antenna elements), and base station apparatus 1420 to transmit and receive wireless signals. As shown in FIG. 14, eNB 1400 can comprise a plurality of antennas 1410. For example, a plurality of antennas 1410 is compatible with the eNB 1400 may use a plurality of frequency bands. Although FIG. 14 shows an example in which the eNB 1400 comprises a plurality of antennas 1410, but the eNB 1400 may also include a single antenna 1410.
[0140]
The base station apparatus 1420 includes a controller 1421, a memory 1422, a network interface 1423 and a wireless communication interface 1425.
[0141]
The controller 1421 may, for example, CPU or DSP, and operation of the various higher layer of the base station apparatus 1420. For example, the controller 1421 generates packet data according to the data signal by the wireless communication interface processing in 1425, and to transmit the generated packet via the network interface 1423. The controller 1421 may be tied to the data from the baseband processor to generate a plurality of packet bundle, bundling and transmitting the generated packet. The controller 1421 may have a function to execute control logic: the control such as a radio resource control, radio bearer control, mobility management, admission control and scheduling. This control may be incorporated close to the core network node or the eNB performed. The memory 1422 comprises a RAM and a ROM, and various types of control programs and data (such as terminal list, the transmission power data and schedule data) executed by the controller 1421.
[0142]
The network interface 1423 for the base station apparatus 1420 is connected to a core network communications interface 1424. The controller 1421 may communicate with the core network node or another eNB via the network interface 1423. In this case, eNB 1400 and the core network node or the eNB may be connected to each other through the logical interface (such as the S1 interface and the X2 interface). The network interface 1423 may also be a wireless communication interface, or a wired communication interface for the wireless backhaul. If the network interface is a wireless communication interface 1423, as compared with the band used by the wireless communication interfaces 1425, network interface 1423 can use a higher frequency band for wireless communication.
[0143]
A wireless communication interface 1425 to support any cellular communication protocol (such as Long Term Evolution (LTE) and LTE- Advanced), via the antenna 1410 and provided to a terminal located in the cell eNB 1400 wireless connection. Wireless communication interface 1425 may generally include a processor 1426 and an RF circuit, for example, a baseband (BB) 1427. BB processor 1426 may perform, for example, encoding / decoding, modulation / demodulation, and a multiplexing / demultiplexing, and performs layer (e.g. L1, medium access control (the MAC), Radio Link Control (RLC) and packet data convergence protocol ( the PDCP)) in various types of signal processing. Instead of the controller 1421, BB processor 1426 may have the above-described part or all of the logic functions. BB processor 1426 may be a memory storing a communication control program, or is configured to execute a program comprising a processor module and associated circuitry. Update to the BB processor 1426 functional changes. The module may be inserted into the slot of the base station apparatus 1420 or card insert. Alternatively, the module may be a chip on a card or blade is mounted. Meanwhile, RF circuitry 1427 may include, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 1410.
[0144]
, The wireless communication interface 1425 in FIG. 14 may include a plurality of processors 1426 BB. For example, processors 1426 may be compatible with a plurality of BB eNB 1400 using a plurality of frequency bands. , The wireless communication interface 1425 in FIG. 14 may include a plurality of RF circuits 1427. For example, a plurality of RF circuitry 1427 may be compatible with a plurality of antenna elements. Although FIG. 14 shows a state where a wireless communication interface 1425 comprises a plurality of processors BB plurality of RF circuits 1426 and 1427 of the example, the wireless communication interface 1425 may include a single processor BB 1426 or 1427 single RF circuit.
[0145]
(Second Application Example)
[0146]
FIG 15 is a schematic block diagram of a second exemplary configuration of the eNB art shown may be applied to the present disclosure. eNB 1530 includes one or more antennas 1540, 1550 and the base station apparatus RRH1560. Each RRH 1560 and the antenna 1540 may be connected to each other via an RF cable. RRH 1560 and base station apparatus 1550 may be connected to each other via high-speed line such as a fiber optic cable.
[0147]
Each antenna 1540 includes a single or a plurality of antenna elements (such as including a plurality of antennas in MIMO antenna elements) and for RRH 1560 transmit and receive wireless signals. As shown in FIG. 15, eNB 1530 can comprise a plurality of antennas 1540. For example, a plurality of antennas 1540 is compatible with the eNB 1530 may use a plurality of frequency bands. Although FIG. 15 shows an example in which the eNB 1530 comprises a plurality of antennas 1540, but the eNB 1530 may also include a single antenna 1540.
[0148]
The base station apparatus 1550 includes a controller 1551, a memory 1552, a network interface 1553, interfaces 1555, and a wireless communication connection interface 1557. The controller 1551, the controller 1552 and the memory 1421 is described with reference to the network interface 1553 in FIG. 14, a network interface 1422 and the memory 1423 the same.
[0149]
A wireless communication interface 1555 to support any cellular communications scheme (such as LTE and LTE- Advanced), and provided to the wireless communication terminal and the RRH 1560 is located corresponding to the sector antenna via RRH 1560 and 1540. Wireless communication interface 1555 may generally comprise, for example, a processor 1556 BB. In addition to the BB processor 1556 is connected to the RRH RF circuitry 15641560 1557 via the connection interface, the processor described in the same BB BB processor 1556 141426 described with reference to FIG. 15, wireless communication interface 1555 may include a plurality of processors 1556 BB. For example, processors 1556 may be compatible with a plurality of BB eNB 1530 using a plurality of frequency bands. Although FIG. 15 shows a state where a wireless communication interface 1555 comprises a plurality of sample processors BB 1556, the wireless communications interface 1555 may include a single processor 1556 BB.
[0150]
An interface 1557 for connecting the base station apparatus 1550 interface (wireless communication interface 1555) is connected to the RRH1560. Interface 1557 may also be connected to the base station apparatus 1550 (a wireless communication interface 1555) is connected to the high-speed line RRH 1560 in the communication module.
[0151]
RRH 1560 includes a connection interface 1561 and a wireless communication interface 1563.
[0152]
Connection interface 1561 for the RRH 1560 (1563 wireless communication interface) connected to the interface of the base station apparatus 1550. Interface 1561 may also be connected to the high-speed lines in the communication module.
[0153]
A wireless communication interface 1563 to transmit and receive wireless signals via the antenna 1540. Wireless communication interface 1563 may generally comprise, for example, RF circuit 1564. RF circuit 1564 may include, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 1540. 15, the wireless communication interface 1563 may include a plurality of RF circuits 1564. For example, RF circuit 1564 may support a plurality of a plurality of antenna elements. Although FIG. 15 shows a state where a wireless communication interface 1563 comprises a plurality of RF circuits 1564 example, the wireless communication interface 1563 may also comprise a single RF circuit 1564.
[0154]
eNB 1400 and eNB 1530 shown in FIG. 14 and FIG. 15, the communication unit 10 described by using FIG 1020 can be and / or wireless communication interface 1563 is implemented by a wireless communication interface 1425 and a wireless communication interface 1555. The processing circuit 1010 may also be at least part of the function implemented by the controller 1421 and the 1551 controller.
[0155]
[Application Example of the user equipment]
[0156]
(First Application Example)
[0157]
FIG 16 is a schematic block diagram of an arrangement 1600 shown in the present disclosure may be applied to smart phone technology. A smart phone 1600 includes a processor 1601, memory 1602, storage device 1603, an external connection interface 1604, the image pickup device 1606, a sensor 1607, a microphone 1608, an input device 1609, a display device 1610, a speaker 1611, a wireless communication interface 1612, one or more antenna switch 1615, one or more antennas 1616, bus 1617, a battery 1618 and an auxiliary controller 1619.
[0158]
The processor 1601 may, for example, a CPU or system on a chip (SoC), a smart phone and controls the application layer and the additional layer 1600 function. The memory 1602 includes a RAM and ROM, and stores data and programs executed by the processor 1601. Memory device 1603 may include a storage medium, such as a semiconductor memory and a hard disk. 1604 external connection interface for connecting an external device (such as a memory card, and a universal serial bus (USB) device) 1600 to the smart phone interfaces.
[0159]
Image pickup apparatus 1606 includes an image sensor (such as a charge coupled device (CCD) and complementary metal oxide semiconductor (CMOS)), and generates a captured image. Sensor 1607 may include a set of sensors, such as a measuring sensor, a gyro sensor, a geomagnetic sensor and an acceleration sensor. Microphone input to the smart phone 1608 1600 sound into an audio signal. The input device 1609 comprises, for example, is configured to detect a touch on the screen of the touch sensor 1610, a keypad, a keyboard, buttons or switches displayed, and receives operation input from a user or information. The display device 1610 includes a screen (such as a liquid crystal display (LCD) and organic light emitting diode (OLED) display), and displays the output image 1600 is a smart phone. Audio signal output from the speaker 1611 from 1600 smart phone is sound.
[0160]
A wireless communication interface 1612 to support any cellular communications scheme (such as LTE and LTE- Advanced), and performs wireless communication. Wireless communication interface 1612 may generally comprise, for example, a processor 1613 and an RF circuit BB 1614. BB processor 1613 may perform, for example, encoding / decoding, modulation / demodulation, and a multiplexing / demultiplexing, and performs various types of signal processing for wireless communication. Meanwhile, RF circuitry 1614 may include, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 1616. Wireless communication interface 1612 may be integrated for the BB processor 1613 and an RF circuit chip 1614 of a module. 16, wireless communication interface 1612 may include a plurality of processors BB plurality of RF circuits 1613 and 1614. Although FIG. 16 shows a state where a wireless communication interface 1612 comprises a plurality of sample processors BB plurality of RF circuits 1613 and 1614, the wireless communications interface 1612 may include a single processor BB 1613 or 1614 single RF circuit.
[0161]
Further, in addition to a cellular communication scheme, a wireless communication interface 1612 may support additional types of wireless communication scheme, such as a short-distance wireless communication scheme, a near field communication scheme and wireless local area network (LAN) scheme. In this case, a wireless communication interface 1612 may include a processor 1613 1614 BB for each wireless communication scheme and the RF circuit.
[0162]
Each of the circuits comprises a plurality (e.g. a circuit for different wireless communication schemes) in a wireless communication interface 1612 and switch between antenna connection destination of the antenna switch 1616 1615.
[0163]
Each antenna 1616 includes a single or a plurality of antenna elements (such as including a plurality of antenna elements in MIMO antenna), a wireless communication interface 1612 and for transmitting and receiving wireless signals. As shown in FIG. 16, a smart phone 1600 may include a plurality of antennas 1616. Although FIG. 16 shows an example in which a smart phone 1600 includes a plurality of antennas 1616, but also a smart phone 1600 may include a single antenna 1616.
[0164]
In addition, the smart phone 1600 may include an antenna for each wireless communication scheme 1616. In this case, the antenna switch 1615 may be omitted from the configuration of the smartphone 1600.
[0165]
1617 bus processor 1601, memory 1602, storage device 1603, an external connection interface 1604, the image pickup device 1606, a sensor 1607, a microphone 1608, an input device 1609, a display device 1610, a speaker 1611, a wireless communication interface 1612 and an auxiliary controller 1619 each other connection. Smartphone respective blocks 1600 through 1618 illustrated in FIG feeder 16 to provide the battery power, in FIG feeder are partially shown as a dashed line. Example, auxiliary controller 1619 operates the smartphone 1600 minimum necessary functions in the sleep mode.
[0166]
Smart phone 1600 shown in FIG. 16, FIG. 120 may be implemented by using a communication unit described by the wireless communication interface 1612. At least a portion of the processing circuit 110 may be implemented by the processor 1601 or 1619 secondary controller.
[0167]
(Second Application Example)
[0168]
FIG 17 is a schematic block diagram of an exemplary configuration 1720 of the art car navigation apparatus illustrating the present disclosure may be applied. Car navigation apparatus 1720 includes a processor 1721, a memory 1722, a global positioning system (GPS) module 1724, a sensor 1725, data interface 1726, content player 1727, storage medium interface 1728, an input device 1729, a display device 1730, a speaker 1731, a radio a communication interface 1733, a switch 1736 or more antennas, one or more antennas 1737 and a battery 1738.
[0169]
The processor 1721 may be, for example, a CPU or SoC, and controls the car navigation device 1720 and other navigation functions. The memory 1722 includes a RAM and ROM, and stores data and programs executed by the processor 1721.
[0170]
The GPS module 1724 using a GPS signal received from a GPS satellite to measure the position of the car navigation device 1720 (such as latitude, longitude, and altitude). Sensor 1725 may include a set of sensors such as a gyro sensor, a geomagnetic sensor and an air pressure sensor. Data interface 1726 is connected via a terminal (not shown) to a network 1741 such as a car, and acquires data (such as vehicle speed data) generated by the vehicle.
[0171]
1727 content player to reproduce the content (such as CD and DVD) are stored in the storage medium, the storage medium is inserted into the storage medium interface 1728. The input device 1729 comprises, for example, it is configured to detect a touch on the screen of the touch sensor device 1730, a display button or switch, and receives operation input from a user or information. The display device 1730 includes a screen such as an LCD or OLED display, and displays a content image or reproducing the navigation function. Content or sound reproduction speaker 1731 output navigation function.
[0172]
A wireless communication interface 1733 to support any cellular communications scheme (such as LTE and LTE- Advanced), and performs wireless communication. Wireless communication interface 1733 may generally comprise, for example, a processor 1734 and an RF circuit BB 1735. BB processor 1734 may perform, for example, encoding / decoding, modulation / demodulation, and a multiplexing / demultiplexing, and performs various types of signal processing for wireless communication. Meanwhile, RF circuitry 1735 may include, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 1737. The wireless communication interface 1733 may also be integrated for the BB processor 1734 and an RF circuit chip 1735 of a module. As shown in FIG 17, a wireless communication interface 1733 may include a plurality of processors BB plurality of RF circuits 1734 and 1735. Although FIG. 17 shows a state where a wireless communication interface 1733 comprises a plurality of sample processors BB plurality of RF circuits 1734 and 1735, the wireless communications interface 1733 may include a single processor BB 1734 or 1735 single RF circuit.
[0173]
Further, in addition to a cellular communication scheme, a wireless communication interface 1733 may support additional types of wireless communication scheme, such as a short-distance wireless communication scheme, a near field communication scheme and the wireless LAN scheme. In this case, for each wireless communication scheme, a wireless communication interface 1733 may include a processor 1734 and an RF circuit BB 1735.
[0174]
Each of the circuits comprises a plurality of wireless communication interface 1733 (such as a different circuit for a wireless communication scheme) switches the connection destination of the antenna between the antenna switch 1737 in 1736.
[0175]
Each antenna 1737 includes a single or a plurality of antenna elements (such as including a plurality of antenna elements in MIMO antenna), a wireless communication interface 1733 and for transmitting and receiving wireless signals. 17, the car navigation device 1720 may include a plurality of antennas 1737. Although FIG. 17 shows a state where the car navigation apparatus 1720 includes a plurality of antennas 1737 is an example, but the car navigation device 1720 may also include a single antenna 1737.
[0176]
Further, the car navigation apparatus 1720 may include an antenna for each radio communication scheme 1737. In this case, the antenna switch 1736 may be omitted from the car navigation apparatus 1720 configuration.
[0177]
Each battery block car navigation device 1738 shown in FIG. 17 via the feeder line 1720 to provide power feeder in the drawing is partially shown as a dashed line. 1738 battery accumulated power supplied from vehicles.
[0178]
FIG 17 shows a car navigation apparatus 1720, the communication unit is described by use of FIG. 1 120 may be implemented by the communication interface 1733. Processing at least a portion of the circuit 110 may be implemented by the processor 1721.
[0179]
The techniques of this disclosure may also be implemented as a car navigation device 1720 comprising the vehicle network module 1742 of the vehicle 1741 and a plurality of blocks or vehicle system (or vehicle) 1740. Vehicle module 1742 generates a vehicle data (such as vehicle speed, engine speed, and failure information), and outputs the generated data to the onboard network 1741.
[0180]
Described above with reference to the accompanying drawings preferred embodiments of the present disclosure, the present disclosure is of course not limited to the above examples. Those skilled in the art that various changes and modifications may be obtained within the scope of the appended claims, and it should be understood that such changes and modifications naturally fall within the technical scope of the present disclosure.
[0181]
For example, in the embodiment comprises a plurality of functions in a single unit in the above embodiments may be implemented by separate devices. Alternatively, a plurality of functions implemented by a plurality of units, respectively, the above embodiments may be implemented by separate devices. Further, more than one of the plurality of functional units may be realized. Needless to say, such a configuration included in the technical scope of the present disclosure.
[0182]
In this specification, the steps described in the flowchart include not only the processing to be performed in time series order, but also in parallel or individually and not necessarily in time series processing performed. Further, even at the step of processing in a time series, needless to say, it may be appropriately changed in this order.
[0183]
While there has been described in detail of the present disclosure and its advantages, it should be understood that various changes may be made without departing from the spirit and scope of the disclosure as defined by the appended claims defined, substitutions and alterations. Further, embodiments of the present disclosure the term "comprising", "containing" or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, article, or apparatus not include only those elements but also other elements not explicitly listed, or further includes elements of the process, method, article or device inherent. Without more constraints, by the wording "include a ......" defined does not exclude the existence of additional identical elements in the element comprising a process, method, article, or apparatus.

WE CLAIM

[Claim 1] Apparatus in a wireless communication system, wherein the apparatus comprises a processing circuit, said processing circuit is configured to: detect whether the power headroom report satisfies a predetermined triggering event; and if the power headroom satisfies a predetermined trigger event reporting, the power headroom reporting is triggered user equipment to the base station, wherein said predetermined power headroom report trigger event comprises at least one of the following events: a first event detected on the unlicensed band channel is idle; and a second event , receiving the uplink scheduling grant signaling from the base station.
[Claim 2]
The apparatus according to claim 1, wherein said predetermined power headroom report triggering event further comprises a set of predefined events, the set of predefined event comprises at least one of: prohibiting power headroom reporting timer expires. and the change over from the last path loss power headroom reported by the predetermined threshold value; periodic power headroom report timer expires; configuration or reconfiguration of the power headroom reporting function; activated secondary carrier; add primary carrier; and prohibiting power headroom reporting timer expires, the MAC layer uplink resource for transmission of new data, and exceeds a predetermined threshold power variation compensation value from the last reported power headroom.
[Claim 3]
The apparatus according to claim 2, wherein the processing circuit is further configured to: upon detection of said event satisfies any of said set of predefined events, is not satisfied if the first or second event event, the current trigger event is canceled, and the first event or the second event meets the detected trigger will be reported to the user equipment power headroom to the base station.
[Claim 4]
The apparatus according to claim 2, wherein the processing circuit is further configured to: upon detection of said event satisfies any of a set of predefined events, if the second event is not satisfied, then suspends the current event triggered until the second event is detected when satisfied, trigger the power headroom reporting the user equipment to the base station.
[Claim 5]
The apparatus according to claim 1, wherein the power headroom identification further comprises uplink scheduling grant signaling and the associated power headroom.
[Claim 6]
The apparatus of claim 5, wherein the power headroom MAC control element to report by, and the identification bit in a reserved bit or add the MAC control element is represented.
[Claim 7]
The device according to any one of claims 1 to 6, wherein the power headroom is reported to the base station through the secondary carrier on the unlicensed frequency band.
[Claim 8]
The apparatus according to claim 7, wherein the power headroom is reported to the base station through a shared channel and physical uplink multiplexing.
[Claim 9]
The apparatus according to claim 1, wherein said apparatus is a user equipment, and the user apparatus further comprising: a communication unit configured to report the power headroom to the base station.
[Claim 10]
A wireless communication system, the wireless communication system comprising: a user equipment, comprising a first processing circuit, the first processing circuit is configured to: detect whether the power headroom report satisfies a predetermined trigger event, and if they meet the predetermined power headroom report trigger event, the trigger will be reported to the user equipment power headroom to the base station; and a base station, comprising a second processing circuit, the second processing circuit is configured to: on the power headroom received demodulated to and scheduling for uplink power control, wherein the power headroom reporting is triggered predetermined event comprises at least one of: a first event, the idle channel is detected on the unlicensed frequency band; and a second event is received from the said base station of an uplink scheduling grant signaling.
[Claim 11]
The wireless communication system according to claim 10, wherein said second processing circuit is further configured to demodulate the power headroom, to determine the uplink scheduling grant signaling associated power headroom identity.
[Claim 12]
A method in a wireless communication system, the method comprising: detecting whether a power headroom report satisfies a predetermined triggering event; and if they meet the predetermined power headroom report trigger event, the trigger base station power headroom reported to the user equipment , wherein said predetermined power headroom report trigger event comprises at least one of: a first event detected on the unlicensed band channel is idle; and a second event, receives the uplink scheduling grant channel from the base station make.