CN105228248A

CN105228248A - Resource allocation methods in a kind of D2D transmission and device

Info

Publication number: CN105228248A
Application number: CN201410265213.7A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2014-06-13
Filing date: 2014-06-13
Publication date: 2016-01-06
Anticipated expiration: 2034-06-13
Also published as: CN105228248B

Abstract

The present invention proposes the resource allocation methods in a kind of D2D transmission and device.Comprise: step one, the first information that D2D is dispatched the resources employment methods of configuration and D2D transfer of data by base station sends to subscriber equipment; Step 2, the second information that D2D is dispatched the resources employment methods of configuration and D2D transfer of data by base station sends to subscriber equipment; Step 3, the first information of the corresponding D2D scheduling configuration that user equipment (UE) sends according to base station and D2D transfer of data and the second information are carried out D2D scheduling and are configured and the transmission of D2D data time domain.

Description

Resource allocation methods in a kind of D2D transmission and device

Technical field

The present invention relates to TDD (TimeDivisionDuplex, time division duplex) subframe scheduling scheme in frame structure, particularly relate to based on LTE (LongTermEvolution, Long Term Evolution) the subframe scheduling scheme of D2D (DevicetoDevice, device is to device) framework.

Background technology

Traditional 3GPP (3rdGenerationPartnerProject, third generation partner program) in LTE system, base station sends DCI (DownlinkControlInformation, Downlink Control Information) form 0 or 4 dispatch UE (UserEquipment, subscriber equipment) send upstream data.

In traditional 3GPP version, transfer of data occurs between base station and UE (UserEquipment, subscriber equipment).In 3GPPR (Release, version) 12, D2D communication is also discussed by project verification, and the essential characteristic of D2D allows the transfer of data between UE.3GPP is at RAN1 (RadioAccessNetworkWorkingGroup1, wireless access network first working group) conclusion reached of #77 meeting is: for the UE be in MPS process, base station sends by D2DRNTI (RadioNetworkTemporaryIdentifier, wireless network fixes tentatively identifier) DCI that identifies dispatches (i.e. Resources allocation) D2DSA (SchedulingAssignment, dispatching distribution) and D2D data, the payload size (i.e. information bit) of the DCI of described D2DRNTI mark equals the information bit of DCI format 0.

Communicate for D2D at present, D2D communication particularly under base station coverage, 3GPP defines and utilizes Physical Downlink Control Channel (PDCCH) and the Physical Downlink Control Channel (EPDCCH) that strengthens to transmit D2D dispatching distribution (SA) and D2D authorization message (Grant) corresponding to D2D data, but how to adopt existing PDCCH and EPDCCH to dispatch accordingly D2DSA and D2D data, D2D dispatching distribution (SA) and D2D data are transmitted especially on which running time-frequency resource position, and how to notify that D2D sends the transmission that user's mode of adopting base station to configure carries out D2D dispatching distribution (SA) and D2D data, also there is no concrete design at present.

Therefore, need the new instruction from base station, adopt which running time-frequency resource to solve, and which kind of adopts send configuration mode, transmit D2DSA and D2D data.

Summary of the invention

For above problem, based on LTE and LTE-A network, the present invention proposes for the D2D scheduling configuration of base station for D2D subscriber equipment and the resource allocation method of D2D transfer of data, and UE is receiving this resource allocation method, obtaining and sending the running time-frequency resource position of D2DSA and D2D data and the method for operation of send mode.

The invention discloses a kind of method in base station, wherein, comprise the steps:

-steps A. send the first signaling instruction first information, the first information comprises one or more D2D transmission of configuration information following:

-dispatching distribution (Schedulingassignment, SA) time window information, is used to indicate the length of the subframe window shared by transmission D2D Scheduling assistance information.

-data time window information, is used to indicate the length that the one or more MAC layer PDU of transmission dispatches the subframe window shared by corresponding D2D data.

-data dispatch number information, to be used to indicate in a data time window transmit the number of MACPDU corresponding to data.

-transmission intercal information, is used to indicate the sub-frame interval information between data dispatching corresponding to each MACPDU of transmitting in a data time window.

-the number of transmissions information, is used to indicate the information of the number of sub-frames shared by data dispatching corresponding to each MACPDU of transmitting in a data time window.

-modulation coding information (MCS), is used to indicate the information of the MCS that data dispatching corresponding to each MACPDU of transmitting in a data time window adopts.

-transmission power control information (TPC)-1, is used to indicate in a dispatching distribution time window and data time window and transmits adopted transmission power level.

-transmission power control information (TPC)-2, is used to indicate in a dispatching distribution time window and transmits adopted transmission power level.

-transmission power control information (TPC)-3, is used to indicate in a data allocations time window and transmits adopted transmission power level.

-transmission intercal information candidate collection, comprises M time interval candidate value, and this candidate value is used to indicate the sub-frame interval information between data dispatching corresponding to each MACPDU of transmitting in a data time window.

-the number of transmissions information candidate collection, comprises N number of the number of transmissions candidate value, and this candidate value is used to indicate the information of the number of sub-frames shared by data dispatching corresponding to each MACPDU of transmitting in a data time window.

-transmission pattern information candidate collection, comprises K D2D transfer of data candidate pattern, and this pattern is used to indicate the information of the subframe position shared by data dispatching corresponding to each MACPDU of transmitting in a data time window.

-step B. sends the second signaling and indicates the second information, and the second information comprises one or more D2D transmission of configuration information following:

-transmission intercal information index, be used to indicate certain value of adopting and concentrating at transmission intercal information candidate as a data time window in sub-frame interval between data dispatching corresponding to each MACPDU of transmitting.

-the number of transmissions index, be used to indicate certain value of adopting and concentrating at the number of transmissions information candidate as a data time window in the information of the number of sub-frames shared by data dispatching corresponding to each MACPDU of transmitting.

-transmission drawing indexing, be used to indicate certain pattern of adopting and concentrating at transmission pattern information candidate as a data time window in the information of the subframe position shared by data dispatching corresponding to each MACPDU of transmitting.

-modulation coding information (MCS)-1, is used to indicate the information of the MCS that data dispatching corresponding to each MACPDU of transmitting in a data time window adopts.

-transmission power control information (TPC)-4, is used to indicate in a dispatching distribution time window and data time window and transmits adopted transmission power level.

-circular shift information (cyclicshift), the information of the cyclic shift that the demodulated reference signal being used to indicate transfer of data in a data time window adopts.

-Frequency Hopping indication information (frequencyhopping), is used to indicate in a dispatching distribution time window and data time window and transmits shared Physical Resource Block (PRB) and whether adopt Frequency Hopping mode between subframe.

Concrete, according to an aspect of the present invention, it is characterized in that, the first signaling is RRC signaling, and the second signaling is physical layer signaling.

Concrete, according to an aspect of the present invention, it is characterized in that, the payload size of the second signaling equals the payload size of the DCI format 0 including CIF territory, compares with DCI format 0, and the second signaling decreases CIF territory.

The invention discloses a kind of method in UE, wherein, comprise the steps:

-steps A. receive the first signaling determination first information, the first information comprises one or more D2D transmission of configuration information following:

-step B. receives the second signaling and determines the second information, and the second information comprises one or more D2D transmission of configuration information following:

-step C. sends D2DSA and D2D data according to the configuration of the first signaling and the second signaling.

The invention discloses a kind of base station equipment, it is characterized in that, this equipment comprises:

First module: for sending the first signaling instruction first information, the first information comprises one or more D2D transmission of configuration information following:

Second module: indicate the second information for sending the second signaling, the second information comprises one or more D2D transmission of configuration information following:

Wherein, the first signaling is RRC signaling, and the second signaling is physical layer signaling.

The invention discloses a kind of subscriber equipment, it is characterized in that, this equipment comprises:

First module: for receiving the first signaling determination first information, the first information comprises one or more D2D transmission of configuration information following:

Second module: determine the second information for receiving the second signaling, the second information comprises one or more D2D transmission of configuration information following:

3rd module: send D2DSA and D2D data for the configuration according to the first signaling and the second signaling.

For this problem of downlink signaling of scheduling D2DSA and D2D data, the mode that the solution of the present invention adopts RRC signaling and physical layer signaling to combine, namely maintains the flexibility of scheduling, in turn saves the running time-frequency resource that downlink signaling takies.In addition, the present invention and existing meeting conclusion completely compatible.

Accompanying drawing explanation

By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:

Fig. 1 shows the flow chart that base station D2D according to an embodiment of the invention dispatches the resources employment methods of configuration and D2D transfer of data;

Fig. 2 shows the flow chart that UE according to an embodiment of the invention transmits according to the resources employment methods information configuration D2D that base station D2D dispatches configuration and D2D transfer of data;

Fig. 3 shows the structured flowchart for the processing unit in base station according to an embodiment of the invention;

Fig. 4 shows the structured flowchart for the processing unit in UE according to an embodiment of the invention;

Embodiment

Hereafter will be described in further detail technical scheme of the present invention by reference to the accompanying drawings, and it should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine arbitrarily mutually.

Fig. 1 is the embodiment of the present invention 1, and base station D2D sends the flow chart of the resource allocation information of scheduling configuration and D2D transfer of data.As shown in Figure 1.

Step S101: base station sends the first signaling instruction first information in step S101, and the first information comprises one or more D2D transmission of configuration information following:

Dispatching distribution (Schedulingassignment, SA) time window information, is used to indicate the length of the subframe window shared by transmission D2D Scheduling assistance information.As an embodiment, this subframe window length is 10ms or 20ms or 40ms.

Data time window information, is used to indicate the length that the one or more MAC layer PDU of transmission dispatches the subframe window shared by corresponding D2D data.As an embodiment, this subframe window length is 40ms or 80ms or 120ms or 160ms or 240ms.

Data dispatch number information, to be used to indicate in a data time window transmit the number of MACPDU corresponding to data.As an embodiment, the number of this MACPDU is 1 or 2 or 4 or 8.

Transmission intercal information, is used to indicate the sub-frame interval information between data dispatching corresponding to each MACPDU of transmitting in a data time window.As an embodiment, this sub-frame interval information is 20ms or 40ms or 80ms or 160ms.

The number of transmissions information, is used to indicate the information of the number of sub-frames shared by data dispatching corresponding to each MACPDU of transmitting in a data time window.As an embodiment, this number of sub-frames is 1 or 2 or 4 or 8.

Modulation coding information (MCS), is used to indicate the information of the MCS that data dispatching corresponding to each MACPDU of transmitting in a data time window adopts.As an embodiment, this MCS information is identical with the table 7.1.7.1-1 in existing LTE protocol TS36.211.

Transmission power control information (TPC)-1, is used to indicate in a dispatching distribution time window and data time window and transmits adopted transmission power level.As an embodiment, this TPC indicates identical with showing the implication of TPCCommend in 5.1.1.1-2 in existing LTE protocol TS36.213.

Transmission power control information (TPC)-2, is used to indicate in a dispatching distribution time window and transmits adopted transmission power level.As an embodiment, this TPC indicates identical with showing the implication of TPCCommend in 5.1.1.1-2 in existing LTE protocol TS36.213.

Transmission power control information (TPC)-3, is used to indicate in a data allocations time window and transmits adopted transmission power level.As an embodiment, this TPC indicates identical with showing the implication of TPCCommend in 5.1.1.1-2 in existing LTE protocol TS36.213.

Transmission intercal information candidate collection, comprises M time interval candidate value, and this candidate value is used to indicate the sub-frame interval information between data dispatching corresponding to each MACPDU of transmitting in a data time window.As an embodiment, M is 4, and corresponding Candidate Set is { 20,40,80,120} (ms) or { 40,80,120,160} (ms).As another embodiment, M is 2, and corresponding Candidate Set is { 10,20} (ms) or { 20,40} (ms) or { 40,80} (ms) or { 80,120} (ms).

The number of transmissions information candidate collection, comprises N number of the number of transmissions candidate value, and this candidate value is used to indicate the information of the number of sub-frames shared by data dispatching corresponding to each MACPDU of transmitting in a data time window.As an embodiment, N is 4, and corresponding Candidate Set is { 1,2,4,8}.

Transmission pattern information candidate collection, comprises K D2D transfer of data candidate pattern, and this pattern is used to indicate the information of the subframe position shared by data dispatching corresponding to each MACPDU of transmitting in a data time window.As an embodiment, K is 16, and corresponding Candidate Set represents with the bitmap of 40, and 40bits represents the subframe window of 40ms, wherein each subframe being " 1 " bit bit representation and distributing to D2D transmission.Corresponding candidate's pattern is:

Step S102: send the second signaling and indicate the second information, the second information comprises one or more D2D transmission of configuration information following:

-transmission intercal information index, be used to indicate certain value of adopting and concentrating at transmission intercal information candidate as a data time window in sub-frame interval between data dispatching corresponding to each MACPDU of transmitting.As an embodiment, this index is 2bits information, the time interval instruction that in " 00 " correspondence instruction Candidate Set, first candidate item is corresponding.The time interval instruction that in " 01 " correspondence instruction Candidate Set, second candidate item is corresponding, by that analogy.As another embodiment, this index is 1bit information, the time interval instruction that in " 0 " correspondence instruction Candidate Set, first candidate item is corresponding.The time interval instruction that in " 1 " correspondence instruction Candidate Set, second candidate item is corresponding.

-the number of transmissions index, be used to indicate certain value of adopting and concentrating at the number of transmissions information candidate as a data time window in the information of the number of sub-frames shared by data dispatching corresponding to each MACPDU of transmitting.As an embodiment, this index is 2bits information, the number of transmissions instruction that in " 00 " correspondence instruction Candidate Set, first candidate item is corresponding.The number of transmissions instruction that in " 01 " correspondence instruction Candidate Set, second candidate item is corresponding, by that analogy.

-transmission drawing indexing, be used to indicate certain pattern of adopting and concentrating at transmission pattern information candidate as a data time window in the information of the subframe position shared by data dispatching corresponding to each MACPDU of transmitting.As an embodiment, this index is 4bits information, the transmission pattern instruction that in " 0001 " correspondence instruction Candidate Set, first candidate item is corresponding.The transmission pattern instruction that in " 0010 " correspondence instruction Candidate Set, second candidate item is corresponding, by that analogy.

-modulation coding information (MCS)-1, is used to indicate the information of the MCS that data dispatching corresponding to each MACPDU of transmitting in a data time window adopts.As an embodiment, this MCS information is identical with the table 7.1.7.1-1 in existing LTE protocol TS36.211.

-transmission power control information (TPC)-4, is used to indicate in a dispatching distribution time window and data time window and transmits adopted transmission power level.As an embodiment, this TPC indicates identical with showing the implication of TPCCommend in 5.1.1.1-2 in existing LTE protocol TS36.213.

-circular shift information (cyclicshift, CS), the information of the cyclic shift that the demodulated reference signal being used to indicate transfer of data in a data time window adopts.As an embodiment, this CS indicates with to show 5.5.2.1.1-1 in existing LTE protocol TS36.211 identical with showing cyclicshift implication corresponding in 5.5.2.1.1-2.

-Frequency Hopping indication information (frequencyhoppingflag), is used to indicate in a dispatching distribution time window and data time window and transmits shared Physical Resource Block (PRB) and whether adopt Frequency Hopping mode between subframe.As an embodiment, this flag indicates identical with Frequencyhoppingflag implication in DCIFormat0 in existing LTE protocol TS36.212.

Concrete, according to an aspect of the present invention, it is characterized in that, described second information from base station sends to user by PDCCH or the EPDCCH signaling of DCIFormat0 form.

Sub-embodiment 1, first signaling as embodiment 1 is RRC signaling, and the second signaling is physical layer signaling.

Payload size as sub-embodiment 2, second signaling of embodiment 1 equals the payload size of the DCI format 0 including CIF territory, and compare with DCI format 0, the second signaling decreases CIF territory.

Fig. 2 is that the embodiment of the present invention 2, UE receives the D2D scheduling configuration of base station transmission and the resource allocation information of D2D transfer of data.As shown in Figure 2.

Step S211:UE receive that base station sends by the first information of the first signaling bear.

Step S212:UE receive that base station sends by the second information of the second signaling bear.

Step S213:UE sends the first information according to base station and the second information carries out the transmission that D2D dispatches configuration and D2D data.

Fig. 3 is the embodiment of the present invention 3, for the structured flowchart of the processing unit in base station.As shown in Figure 4.Base station apparatus 300 is made up of dispensing device 301.Dispensing device 301 sends the resource allocation information of D2D scheduling configuration and D2D transfer of data.

Fig. 4 is the embodiment of the present invention 4, for the structured flowchart of the processing unit in UE.As shown in Figure 5.UE device 400 is made up of receiving system 401 and forms with processing unit 402.Receiving system 401 receives the resource allocation information of D2D scheduling configuration and D2D transfer of data.Processing unit 402 according to the reception information of receiving system 401, configuration transmission D2D scheduling configuration and the time domain at PRB place shared by D2D data and the position of frequency domain and transmission means.

The all or part of step that one of ordinary skill in the art will appreciate that in said method can be carried out instruction related hardware by program and complete, and described program can be stored in computer-readable recording medium, as read-only memory, and hard disk or CD etc.Optionally, all or part of step of above-described embodiment also can use one or more integrated circuit to realize.Accordingly, each modular unit in above-described embodiment, can adopt example, in hardware to realize, and also can be realized by the form of software function module, the application is not limited to the combination of the software and hardware of any particular form.

The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improves, all should be included within protection scope of the present invention.

Claims

1. the method in base station, wherein, comprises the steps:

2. method according to claim 1, is characterized in that, the first signaling is RRC signaling, and the second signaling is physical layer signaling.

3. method according to claim 2, is characterized in that, the payload size of the second signaling equals the payload size of the DCI format 0 including CIF territory, compares with DCI format 0, and the second signaling decreases CIF territory.

4. the method in UE, wherein, comprises the steps:

5. method according to claim 4, is characterized in that, the first signaling is RRC signaling, and the second signaling is physical layer signaling.

6. method according to claim 4, is characterized in that, the payload size of the second signaling equals the payload size of the DCI format 0 including CIF territory, compares with DCI format 0, and the second signaling decreases CIF territory.

7. a base station equipment, is characterized in that, this equipment comprises:

8. a subscriber equipment, is characterized in that, this equipment comprises: