CN103002593B - A kind of method and system being realized relaying between base station by terminal back-to-back - Google Patents
A kind of method and system being realized relaying between base station by terminal back-to-back Download PDFInfo
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- CN103002593B CN103002593B CN201110275203.8A CN201110275203A CN103002593B CN 103002593 B CN103002593 B CN 103002593B CN 201110275203 A CN201110275203 A CN 201110275203A CN 103002593 B CN103002593 B CN 103002593B
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- 238000000034 method Methods 0.000 title claims abstract description 65
- 238000013475 authorization Methods 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 claims description 18
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 claims description 18
- 230000004044 response Effects 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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Abstract
The invention provides a kind of method being realized relaying between base station by terminal back-to-back, comprise the steps: that A, first terminal receive and the data of buffer memory first base station down transmission; B, the second terminal obtain uplink authorization to the second base station, successfully obtain after uplink authorization, the second terminal obtain first terminal buffer memory data and by described data retransmission to the second base station.The invention provides a kind of system being realized relaying between base station by terminal back-to-back.
Description
Technical field
The present invention relates to mobile communication technology field, particularly relate to a kind of method and system being realized relaying between base station by terminal back-to-back.
Background technology
Communication mode traditional between traditional base station is realized by wired X2 interface, but in outlying mountain area, when there is not X2 interface between two base stations, just need to utilize the transfer of data that a kind of trunking has come between two base stations.
Summary of the invention
The invention provides a kind of method and system being realized relaying between base station by terminal back-to-back, when can there is not X2 interface between the base stations, realize the transfer of data between base station.
The embodiment of the present invention provides a kind of method being realized relaying between base station by terminal back-to-back, comprises the steps:
A, first terminal receive and the data of buffer memory first base station down transmission;
B, the second terminal obtain uplink authorization to the second base station, successfully obtain after uplink authorization, the second terminal obtain first terminal buffer memory data and by described data retransmission to the second base station.
Preferably, described first terminal and the second terminal works are in different frequencies.
Preferably, first terminal described in steps A receive first base station down send data be: first terminal layer 1 receive first base station down send data.
Preferably, the second terminal described in step B obtains the data of first terminal buffer memory is the data that the second terminating layer 2 obtains first terminal layer 2 buffer memory.
Preferably, steps A comprises the steps:
A1, first terminal receive the data of the first base station down transmission at radio frames N1, and the layer 1 of first terminal, layer 2 receive these data of process, if receive successfully, and data described in buffer memory; If first terminal successfully receives these data, continue to perform steps A 2;
A2, first terminal send for informing that the second terminal can obtain the instruction of data to the second terminal at radio frames N1.
Preferably, described step B comprises:
B1, the second terminating layer 2, in the dispatch request of these data of radio frames N1 process, learn that layer 1 needs the radio frames N2 process dispatch request after radio frames N1;
B2, radio frames N2 after radio frames N1, the layer 1 of the second terminal processes the dispatch request of these data, and the second terminal sends the dispatch request of these data to the second base station at radio frames N2+1;
B3, radio frames N3 after radio frames N2, the second base station sends uplink authorization to the second terminal; The layer 1 of the second terminal, layer 2 receive this uplink authorization of process, and according to result to the second base station feedback ACK or NACK; In N3 radio frames, the layer 2 of the second terminal, layer 1 obtain the data of first terminal buffer memory;
B4, in N3+1 radio frames, the layer 1 of the second terminal sends ACK or NACK of uplink authorization to the second base station and by described data retransmission to the second base station.
Preferably, comprise further in N1+1 radio frames: whether successful data reception is to the first base station feedback affirmative acknowledgement ACK or negative response NACK according to data receiver for first terminal.
The embodiment of the present invention also provides a kind of system being realized relaying between base station by terminal back-to-back, comprise the first base station, the second base station, first terminal and the second terminal, first terminal is arranged in the community of the first base station, second terminal is arranged in the community of the second base station, and described first terminal is for receiving and the data of buffer memory first base station down transmission;
Described second terminal is used for obtaining uplink authorization to the second base station, successfully obtains after uplink authorization, the second terminal obtain first terminal buffer memory data and by described data retransmission to the second base station.
As can be seen from the above technical solutions, when there is not X2 interface and relaying between direct base station cannot be carried out between two base station, carry out data receiver, buffer memory, feedback, repeating process by the terminal of these two base station cells, thus realize the relaying of base station.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the present invention program;
Fig. 2 shows the method flow diagram being realized relaying between base station by terminal back-to-back that the embodiment of the present invention provides;
Fig. 3 is the concrete processing procedure schematic diagram of terminal 1 and terminal 2 in flow process shown in Fig. 2;
Fig. 4 be the embodiment of the present invention propose terminal back-to-back mode forward the minimal time delay schematic diagram of a packet;
Fig. 5 be the embodiment of the present invention propose terminal back-to-back mode forward the maximum delay schematic diagram of a packet.
Embodiment
Fig. 1 is the principle schematic of the present invention program.Terminal 1 (UE1) and terminal 2 (UE2) belong to base station 1 and base station 2 respectively.Wherein base station 1 connects core net by S1 interface.Terminal 1 and terminal 2 work on different frequencies, are positioned at cell edge and fixing do not move, by Uu interface respectively with respective place base station communication.Carry out the exchanges data of layer 2 between two terminals, after layer 1 processes, by Uu interface, the data of base station, distant terminal equipment place are transferred to the base station at this terminal equipment place, thus realize the exchanges data between two base stations.
Data receiver, buffer memory, feedback, repeating process are: first terminal receives the data from the first base station at radio frames N1, after the reception process of this radio frames first terminal layer 1, layer 2 and the process of the second terminating layer 2, what on the control channel of radio frames N1+1, send these data by first terminal feeds back to the first base station; By the second terminal in radio frames N2 process dispatch request, dispatch request is sent to the second base station at radio frames N2+1, after the uplink authorization that radio frames N3 receives from the second base station, the process through its layer 1, layer 2 sends the data to the second base station at radio frames N3+1.First terminal the reception process of radio frames N1+1 and the second terminal identical with radio frames N1, N3 respectively in the process of radio frames N3+1.
For making the feature of technical solution of the present invention and technique effect clearly, below by way of specific embodiment, the present invention program is elaborated further.
Fig. 2 shows the method flow being realized relaying between base station by terminal back-to-back that the embodiment of the present invention provides, and comprises the steps:
Step 201: in N1 radio frames, base station 1 sends data to terminal 1.
Step 202 is to step 204: the layer 1 of terminal 1, layer 2 receive these data of process, generate corresponding feedback information (ACK/NACK), if receive successfully, and data described in buffer memory.Data buffering after confirming that feedback information is ACK, is sent an instruction to terminal 2 to local cache by the layer 2 of terminal 1, informs that terminal 2 can obtain this data from the local cache of terminal 1.
Step 205: in N1 radio frames, the layer 2 of terminal 2 processes the dispatch request (SR, SchedulingRequest) of these data, learns that layer 1 needs the radio frames N2 process dispatch request after radio frames N1.
Step 206: in N1+1 radio frames, terminal 1 is according to whether successful data reception feeds back affirmative acknowledgement (ACK) or negative response (NACK) to base station 1.
Step 207: the N2 radio frames after radio frames N1, the layer 1 of terminal 2 processes the dispatch request of these data.
Step 208: terminal 2 sends the dispatch request of these data to base station 2 at radio frames N2+1.
Step 209: the radio frames N3 after radio frames N2, base station 2 sends uplink authorization to terminal 2.
Step 210 is to step 212: the layer 1 of terminal 2, layer 2 receive this uplink authorization of process, and according to result to base station 2 feeding back ACK or NACK.
Step 213 is to step 214: at radio frames N3, and terminal obtains the data of terminal 1 layer of 2 buffer memory for 2 layer 2, and the layer 2 of terminal 2, layer 1 process the data of buffer memory.
Step 215: in N3+1 radio frames, the layer 1 of terminal 2 sends ACK or NACK of uplink authorization to base station 2.
Step 216: at radio frames N3+1, terminal 2 by described data retransmission to base station 2.
Fig. 3 shows the concrete processing procedure of terminal 1 and terminal 2 in above-mentioned flow process.Comprise:
Step 301: at the descending time slot of N1 radio frames, the layer 1 of terminal 1 receives the data D11 of the descending transmission in base station 1.
Step 302: the layer 1 of terminal 1 receives deal with data D11.
Step 303: at the ascending time slot of N1 radio frames, UE1 receives process D11, if receive successfully, is then stored into bufferl.
Step 304:UE1 layer 1 processes ACK or NACK of D11, the upper row relax of UE1.
Wherein, t1 is the finish time of layer 2 reception process base station 2 data of UE2; The layer 2 of t2:UE1 processes the start time of the dispatch request of UE2 data.So t1 will in advance in t2.The concrete See Figure of t1, t2.So the UP process of UE1, refer to from the t2 moment, the layer 2 of UE1 processes the dispatch request of UE2 data, and the layer 1 of UE1 processes, and the layer 1 referring to following UE1 processes the dispatch request of UE2 data.Here, showing t1, t2 is to illustrate that the layer 2 of two UE processes a time relationship of the other side's data scheduling request.
The dispatch request of row relax D11 on step 305:UE2.
Step 306: at the ascending time slot of N1+1 radio frames, UE1 layer 1 sends the ACK/NACK of D11.
Step 307: the N2 radio frames after N1 radio frames, UE2 layer 1 processes the dispatch request of D11.
Step 308: at the DwPTS time slot of N2+1 radio frames, UE2 layer 1 sends the dispatch request of D11.
Step 309: the descending time slot of the N3 radio frames after N2 radio frames, UE2 layer 1 receives the uplink authorization of D11.
The DwPTS time slot of step 310:N3 radio frames and ascending time slot, UE2 layer 1 receives the uplink authorization of process D11.
The ascending time slot of step 311:N3 radio frames, UE2 layer 2 receives the uplink authorization of process D11.
The ascending time slot of step 312:N3 radio frames, UE2 layer 1 processes the ACK/NACK of uplink authorization.
The ascending time slot of step 313:N3 radio frames, UE2 layer 2 deal with data D11.
The descending time slot of step 314:N3+1 radio frames, UE2 layer 1 processes D11.
The ascending time slot of step 315:N3+1 radio frames, UE2 layer 1 sends the ACK/NACK of data D11 uplink authorization.
The ascending time slot of step 316:N3+1 radio frames, UE2 layer 1 sends data D11.
Step a described in Fig. 3 to step f is the respective handling step sending next data D12, similar with the treatment step sending D11, therefore repeats no more.
It is 4 radio frames that Fig. 4 shows the terminal minimal time delay that mode forwards a packet back-to-back that the embodiment of the present invention proposes, and is respectively:
Radio frames 0: terminal 1 receives the data of base station 1 and processes;
Radio frames 1: terminal 1 sends the ACK/NACK of data to base station 1, and terminal 2 sends dispatch request to base station 2;
Radio frames 2: terminal 2 receives the uplink authorization of base station 2 and processes;
Radio frames 3: terminal 2 send the ACK/NACK of uplink authorization and forwarding data to base station 2.
It is 20 radio frames that Fig. 5 shows the terminal maximum delay that mode forwards a packet back-to-back that the embodiment of the present invention proposes, and is respectively:
Radio frames 1: terminal 1 receives the data of base station 1 and processes;
Radio frames 2: terminal 1 sends the ACK/NACK of data to base station 1.
Radio frames 17: the maximum dispatching cycle of dispatch request terminates, terminal 2 sends dispatch request to base station 2.
Radio frames 18: terminal 2 receives the Downlink Control Information (DCI, DownlinkControlInformation) of the up termination of base station 2 and processes.
Radio frames 19: terminal 2 receives the uplink authorization of base station 2 and processes.
Radio frames 20: terminal 2 send the ACK/NACK of uplink authorization and forwarding data to base station 2.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (8)
1. realized a method for relaying between base station by terminal back-to-back, it is characterized in that, first terminal is arranged in the community of the first base station, and the second terminal is arranged in the community of the second base station, and the method comprises the steps:
A, first terminal receive and the data of buffer memory first base station down transmission;
B, the second terminal obtain uplink authorization to the second base station, successfully obtain after uplink authorization, the second terminal obtain first terminal buffer memory data and by described data retransmission to the second base station.
2. method according to claim 1, is characterized in that, described first terminal and the second terminal works are in different frequencies.
3. method according to claim 1, is characterized in that, the data that first terminal described in steps A receives the first base station down transmission are: first terminal layer 1 receives the data that the first base station down sends.
4. method according to claim 1, is characterized in that, described in step B, the second terminal obtains the data of first terminal buffer memory is the data that the second terminating layer 2 obtains first terminal layer 2 buffer memory.
5. method according to claim 1, is characterized in that, steps A comprises the steps:
A1, first terminal receive the data of the first base station down transmission at radio frames N1, and the layer 1 of first terminal, layer 2 receive these data of process, if receive successfully, and data described in buffer memory; If first terminal successfully receives these data, continue to perform steps A 2;
A2, first terminal send for informing that the second terminal can obtain the instruction of data to the second terminal at radio frames N1.
6. method according to claim 5, is characterized in that, described step B comprises:
B1, the second terminating layer 2, in the dispatch request of these data of radio frames N1 process, learn that layer 1 needs the radio frames N2 process dispatch request after radio frames N1;
B2, radio frames N2 after radio frames N1, the layer 1 of the second terminal processes the dispatch request of these data, and the second terminal sends the dispatch request of these data to the second base station at radio frames N2+1;
B3, radio frames N3 after radio frames N2, the second base station sends uplink authorization to the second terminal; The layer 1 of the second terminal, layer 2 receive this uplink authorization of process, and according to result to the second base station feedback ACK or NACK; In N3 radio frames, the layer 2 of the second terminal, layer 1 obtain the data of first terminal buffer memory;
B4, in N3+1 radio frames, the layer 1 of the second terminal sends ACK or NACK of uplink authorization to the second base station and by described data retransmission to the second base station.
7. method according to claim 6, is characterized in that, comprises further in N1+1 radio frames: whether successful data reception is to the first base station feedback affirmative acknowledgement ACK or negative response NACK according to data receiver for first terminal.
8. realized a system for relaying between base station back-to-back by terminal, comprise the first base station, the second base station, first terminal and the second terminal, first terminal is arranged in the community of the first base station, and the second terminal is arranged in the community of the second base station, it is characterized in that,
Described first terminal is for receiving and the data of buffer memory first base station down transmission;
Described second terminal is used for obtaining uplink authorization to the second base station, successfully obtains after uplink authorization, the second terminal obtain first terminal buffer memory data and by described data retransmission to the second base station.
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| CN104471874B (en) * | 2013-06-29 | 2018-05-29 | 华为技术有限公司 | Data forwarding method, relay node equipment and network system |
| KR20180108589A (en) * | 2016-01-29 | 2018-10-04 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | Method and terminal for side link data transmission |
| EP3457745B1 (en) * | 2016-05-13 | 2020-08-19 | Huawei Technologies Co., Ltd. | Resource allocation method and relevant device |
| CN109150417B (en) * | 2017-06-16 | 2020-11-03 | 华为技术有限公司 | Method and device for sending and receiving uplink information |
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| CN1917706A (en) * | 2006-08-18 | 2007-02-21 | 华为技术有限公司 | Method for configuring resources of up-link channel, and corresponging terminal, base staion and system |
| CN101827428A (en) * | 2010-04-22 | 2010-09-08 | 新邮通信设备有限公司 | Method and relay for reducing data loss in radio link failure |
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| CN101137104B (en) * | 2006-08-28 | 2010-05-12 | 华为技术有限公司 | Method and system for implementing resource release |
| CN101227726B (en) * | 2008-02-03 | 2012-09-05 | 中兴通讯股份有限公司 | Cellular network communicating system and P-P communicating method of user equipment |
| CN101521909B (en) * | 2009-03-27 | 2011-05-11 | 上海无线通信研究中心 | Signaling forwarding method for communication between base stations based on terminal relays |
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| CN1917706A (en) * | 2006-08-18 | 2007-02-21 | 华为技术有限公司 | Method for configuring resources of up-link channel, and corresponging terminal, base staion and system |
| CN101827428A (en) * | 2010-04-22 | 2010-09-08 | 新邮通信设备有限公司 | Method and relay for reducing data loss in radio link failure |
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