WO2012159547A1 - 一种上行协作集内信息交互的方法及系统 - Google Patents

一种上行协作集内信息交互的方法及系统 Download PDF

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Publication number
WO2012159547A1
WO2012159547A1 PCT/CN2012/075672 CN2012075672W WO2012159547A1 WO 2012159547 A1 WO2012159547 A1 WO 2012159547A1 CN 2012075672 W CN2012075672 W CN 2012075672W WO 2012159547 A1 WO2012159547 A1 WO 2012159547A1
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data
cell
coordinated
serving cell
check result
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PCT/CN2012/075672
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English (en)
French (fr)
Inventor
姚珂
王文焕
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中兴通讯股份有限公司
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Publication of WO2012159547A1 publication Critical patent/WO2012159547A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022Site diversity; Macro-diversity
    • H04B7/024Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and system for information interaction in an uplink collaborative set.
  • IMT-Advanced International Mobile Telecommunications- Advanced, International Mobile Telecommunications
  • 3G Third Generation, third generation mobile communication
  • the target peak rate is: low-speed mobile, hot-spot coverage scenarios above lGbit/s (gigabits per second), high-speed mobile , 100Mbit/s (hundred megabits per second) in a wide-area coverage scenario.
  • CoMP Coordinated Multipoint Transmission/Reception
  • LTE-Advanced Long Term Evolution-Advanced
  • CoMP is mainly for the case where the UE (User Equipment) in the cell edge zone is seriously interfered by the situation, and multiple cells cooperate to perform multipoint data transmission/reception on the interfered UE, or through coordination and scheduling between multiple cells.
  • UE User Equipment
  • CoMP is mainly for the case where the UE (User Equipment) in the cell edge zone is seriously interfered by the situation, and multiple cells cooperate to perform multipoint data transmission/reception on the interfered UE, or through coordination and scheduling between multiple cells.
  • improve signal quality improve user and system data throughput, and thereby improve system spectrum utilization.
  • Intra-eNB CoMP means that the cells/sectors participating in the cooperation belong to the same base station control, and the inter-cell communication is performed in one base station without the transmission of the X2 interface or the air interface.
  • the inter-eNB CoMP refers to the cooperation.
  • the cell/sector belongs to multiple base station controls, and the information is that the information needs to be transmitted through the X2 interface or the air interface when communicating between the cooperative cells. Therefore, the intra-eNB CoMP application has the characteristics of high speed and convenient cooperation, and the inter-eNB CoMP has more flexibility in the selection of the cooperative set, and thus has a wider application scenario.
  • CoMP technology is divided into uplink CoMP and downlink CoMP according to the link direction.
  • the downlink CoMP refers to a plurality of coordinated cells jointly transmitting data for the user
  • the uplink CoMP refers to data of multiple coordinated cells jointly receiving the UE.
  • the standard mid-downlink CoMP technology is mainly divided into the following two categories: Joint processing (JP for short): the same data is sent to the user in the cell in each collaboration set, and the user can utilize the gain improvement similar to macro diversity.
  • JP Joint processing
  • Received effect Coordinated Scheduling/Coordinated Beamforming
  • CS/CB Coordinated Scheduling/Coordinated Beamforming
  • the uplink CoMP mainly uses the joint processing between the coordinated cells, and the UE uplink data received by multiple points is combined to improve the receiving accuracy rate.
  • the joint processing of the uplink data requires interaction data between the cooperative cells, and the timing of the interaction data is divided into two types: the coordinated cell and the UE data before and after the parsing.
  • the process of parsing data brings an additional processing burden to the cooperating cell, but the parsed data becomes smaller than the amount of data before parsing, so the pressure on the interface between the base stations can be alleviated to some extent, and the service cell does not have a solution.
  • the coordinated cell is de-paired, the UE can quickly respond with an affirmative response.
  • the uplink joint processing schemes currently discussed are generally the result of the interaction parsing, that is, the cells in each collaboration set are independently parsed first, and the final parsing result is mutually exchanged (ie, whether the solution is solved for TB). If the serving cell has not been solved, the solution is solved.
  • the coordinated cell sends a TB (Transmit Block) to the serving cell.
  • Proposal R1-093797 proposes to exchange ACK (ACKnowledge) / NAK (Non-ACKnowledge) between all eNBs (enhanced Node Bs) to refine the processing in various situations.
  • ACK acknowledgeledge
  • NAK Non-ACKnowledge
  • the interactive soft bit information, or IQ samples can be combined to improve the accuracy.
  • Proposal R1-09-3019 proposes to increase the CB (code block) level and soft bit level interaction. From TB, CB, soft bit information to IQ sample information, the overhead increases in turn. The pressure on the X2 interface or the air port also increases in turn.
  • the proposal mainly proposes that the coordinated cell selects a most suitable level of data packet and sends it to the serving cell according to the capability of the X2 interface, and the serving cell merges and parses according to the received data packet level of all the coordinated cells.
  • the technical problem to be solved by the embodiments of the present invention is to provide a method and system for information interaction in an uplink cooperative set, which can reduce the amount of data of an interface between a base station or a cell, so that the transmitted content is more effective for cooperation.
  • an embodiment of the present invention provides a method for information interaction in an uplink collaboration set, where the method includes:
  • the verification results are exchanged between all cells in the cooperative set of the coordinated user equipment (UE);
  • the cooperative cells in the cooperation set learn whether the coordinated cell needs to send data to the serving cell through the distributed negotiation when the service cell unpacking error is obtained, and if necessary, If the serving cell sends data, it needs to send all data or part of data to the serving cell.
  • the steps include:
  • the coordinating cell When the cooperating cell satisfies the condition that the part of the data needs to be sent to the serving cell in the distribution negotiation, the coordinating cell needs to send part of the data to the serving cell.
  • the verifying includes: a transport block (TB) check, and/or a code block (CB) check.
  • the verification result specifically refers to:
  • the check result is an acknowledgement (ACK);
  • the TB check result is an error
  • NAK negative response
  • the TB check result is an error
  • the check result includes the NAK, and the CB check result is also included.
  • the distributing the negotiation includes:
  • the coordinated cell meets one of the following conditions, it is not required to send data to the serving cell: the TB check result of the serving cell is correct;
  • the TB check result of the serving cell is an error
  • the TB check result of the coordinated cell is an error
  • the TB check result of other coordinated cells in the cooperation set is correct.
  • the distributing the negotiation specifically includes:
  • the TB is not divided into multiple CBs, and the TB check result of the serving cell and the coordinated cell in the coordinated set are all wrong, then the coordinated cell Need to send all data to the serving cell;
  • the TB is divided into multiple CBs, and the TB and all CB check results of the serving cell are all wrong. If only the TB check result of the coordinated cell is correct in the cooperation set, the coordinated cell needs to be in the serving cell. Send all data;
  • the TB is divided into multiple CBs, and the TB and all CB check results of the serving cell are all wrong, the TB check result of the coordinated cell is correct, and the TB check of other coordinated cells in the cooperation set is performed.
  • the result is correct, according to the unified judgment criteria, the decision needs to be made to the cooperative community.
  • the cell sends all the data;
  • the transmitting all data refers to transmitting TB level, or soft bit level, or IQ sample level data.
  • the distributing the negotiation specifically includes:
  • the TB is divided into multiple CBs, and the TB and all CB check results of the serving cell are all errors, and the TB check results of all the coordinated cells in the cooperation set are all errors; or, the TB of the serving cell If the verification result is an error and the partial CB check result is an error, the following judgment is made on one or more CBs whose CB check result is wrong:
  • the coordinated cell sends CB data corresponding to the CB with the correct CB check result to the serving cell; if the corresponding CB of the coordinated cell If the verification result is correct, the corresponding CB check result of the other coordinated cells in the cooperation set is also correct.
  • the coordinated communication cell sends the corresponding CB data to the serving cell, The coordinated cell sends CB data corresponding to the CB with the correct CB check result to the serving cell;
  • the coordinated cell sends CB data corresponding to the CB whose CB check result is incorrect to the serving cell; wherein, the sending part data It means sending part of CB data.
  • the method further includes:
  • the serving cell parses the data according to the received data sent by the coordinated cell and the corresponding test result, and corrects the data packet according to the following manner:
  • the TB data is directly replaced with the TB data; if the CB data is received, and the coordinated cell that sends the CB data is unpaired, the CB data pair is used. After the corresponding CB data is corrected, the modified CB data is used to further parse the data packet;
  • the combined CB information is used to further parse the data packet;
  • an embodiment of the present invention further provides a system for information interaction in an uplink collaboration set, where the system includes:
  • a check result interaction unit configured to perform a check result between the cells outside the cell where the check result interaction unit is located in the cooperation set of the coordinated UE in the uplink cooperation process, where the check includes the TB check , and / or CB check;
  • the negotiation decision unit in the coordinated cell is configured to: according to the check result of all the cells in the interaction, when the service cell unpacking error is obtained, determine whether the coordinated cell needs to send data to the serving cell by using the distributed negotiation, and if necessary To transmit data to the serving cell, it is necessary to send all data or partial data to the serving cell.
  • the negotiation decision unit is set to:
  • the coordinating cell needs to send part of the data to the serving cell.
  • the check result interaction unit is configured to perform the check result according to the following manner: If the TB is de-paired, that is, the TB check result is correct, the check result of the interaction is ACK; if the TB is decoded, The TB check result is an error. When the TB is not divided into multiple CBs, the check result of the interaction is NAK. If the TB is decoded, that is, the TB check result is an error. When the TB is divided into multiple CBs, the cross-check result of the interaction includes the NAK, and the CB check result is also included.
  • the negotiation decision unit is configured to: when the coordinated cell meets one of the following conditions, the decision does not need to send data to the serving cell:
  • the TB check result of the serving cell is correct
  • the TB check result of the serving cell is an error
  • the TB check result of the coordinated cell is an error
  • the TB check result of the other coordinated cell in the collaboration set is correct
  • the decision needs to send all data to the serving cell:
  • the TB is not divided into multiple CBs, and the TB check results of the serving cell and the coordinated cell in the cooperation set are all wrong, and the coordinated cell needs to send all data to the serving cell;
  • the TB is divided into multiple CBs, and the TB and all CB check results of the serving cell are all wrong. If only the TB check result of the coordinated cell is correct in the cooperation set, the coordinated cell needs to be in the serving cell. Send all data;
  • the TB and all CB check results of the serving cell are all errors, and the coordinated cell
  • the coordinated cooperative cell needs to send all data to the serving cell; wherein, the sending All data refers to sending TB level, or soft bit level, or IQ level data.
  • the negotiation decision unit is configured to: when the coordinated cell meets one of the following conditions, the decision needs to send part of the data to the serving cell:
  • the TB is divided into multiple CBs, and the TB and all CB check results of the serving cell are all errors, and the TB check results of all the coordinated cells in the cooperation set are all errors; or, the TB of the serving cell If the verification result is an error and the partial CB check result is an error, the negotiation decision unit performs the following judgment on one or more CBs whose CB check result is wrong:
  • the coordinated cell sends CB data corresponding to the CB with the correct CB check result to the serving cell; if the corresponding CB of the coordinated cell The verification result is correct, there are other collaborations in the collaboration set.
  • the corresponding CB check result of the cell is also correct.
  • the coordinated cell sends the CB data corresponding to the CB with the correct CB check result to the serving cell, and the coordinated cell provides the service to the service.
  • the cell sends the CB data corresponding to the correct CB of the CB check result; if the corresponding CB check result of all the coordinated cells in the coordinated set is an error, the coordinated cell sends the CB check result to the serving cell.
  • system further includes an analysis processing unit in the serving cell:
  • the parsing processing unit is configured to: when the serving cell TB is decoded, according to the received data sent by the coordinated cell and the corresponding check result, correct the peer data or merge the information according to the following manner, and then perform the data packet Analysis:
  • the TB data is directly replaced with the TB data; if the CB data is received, and the coordinated cell that sends the CB data is unpaired, the CB data pair is used. After the corresponding CB data is corrected, the modified CB data is used to further parse the data packet;
  • the combined CB information is used to further parse the data packet;
  • the embodiments of the present invention have at least the following beneficial effects: Compared with the joint processing typical method, the TB level, the CB level, the soft bit level, or the IQ data is transmitted, and the transmission TB or only part of the CB is selected as needed to ensure the minimum overhead, and the transmission is performed.
  • the most needed part of the serving cell reduces the pressure on the X2 interface/air interface and improves the data transmission efficiency; compared with the interactive soft bit information and the IQ data combination, the CB is a relatively high level information, which can alleviate the processing of the serving cell.
  • the method has good compatibility, and the advantages of the large TB scene are outstanding, and no additional overhead is introduced for the small TB scenario.
  • FIG. 1 is a schematic structural diagram of a transmitter in an LTE technology
  • FIG. 2 is a schematic structural diagram of a receiver in an LTE technology
  • FIG. 3 is a flowchart of processing a serving cell in an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a scenario of an application example of the present invention.
  • FIG. 6 is a schematic diagram of a system for information interaction in an uplink collaboration set according to an embodiment of the present invention. Preferred embodiment of the invention
  • bit level processing By studying the process of data transmission in LTE, it can be known that the processing of data by the physical layer is divided into two parts, bit level processing and symbol level processing.
  • the bit level processing of the originating and receiving ends is shown in Fig. 1 and Fig. 2, respectively.
  • the (Cyclic Redundancy Check) code is then divided into CB (Code Block) by the code block segmentation algorithm.
  • CB Code Block
  • each CB adds a 24-bit CRC check code and then performs subsequent processing. If the number of bits of the TB is small and no splitting is required, there is no need to add a CRC of the CB. That is, when there are multiple CBs, the TB has a CRC check and the CB also has a CRC check. Therefore, at the receiving end, the TB and the analysis result of each CB can be known by the CB level CRC check result.
  • the embodiment of the present invention performs cell handover in the collaboration set in the uplink cooperation process.
  • the distribution negotiation cooperation cell needs to send data to the serving cell.
  • the coordinated cell may only send part of the data packet or all the data packets to the serving cell, and the serving cell uses the received information to correct its own peer data, and completes the unpacking process.
  • the cell in the cooperation set includes a serving cell and a coordinated cell participating in cooperation.
  • the user sends data, and the cells in the collaboration set receive and independently unpack.
  • the distribution negotiation refers to: the coordinated cell uses a distributed algorithm to determine a cooperative cell that needs to send data, and ensures that the calculation results in different coordinated cells are consistent. Specifically, each coordinated cell decides whether the coordinated cell needs to send data to the serving cell, and if it needs to send, whether to send all data or partial data to the serving cell.
  • the sending part of the data packet refers to:
  • the TB is divided into multiple CBs in the encoding process, and the result of the distribution negotiation is that the coordinated cell only needs to send part of the CB.
  • the sending of all the data packets means that when the data packet TB is small, the TB does not need to be divided in the encoding process, or the distribution negotiation results when the TB is divided into multiple CBs, so that the coordinated cell needs to send all the data.
  • the sending part of the data packet refers to sending part of the CB level data packet.
  • the transmitting all data refers to transmitting data of a TB level, or a soft bit level, or an IQ level.
  • the embodiment of the present invention provides an uplink cooperative set information interaction method, including: Step 1: The cell in the cooperation set receives the data of the coordinated UE, parses the data, and saves the TB data and the check result thereof;
  • each CB packet and its verification result are also saved.
  • Step 2 The cells in the cooperation set exchange respective check results; if the condition is met, the service cell simultaneously sends a response message to the cooperative UE.
  • the check result includes the check result of the TB of the current cell.
  • the check result of the CB is also included.
  • Serving cell If the TB check is correct, send an ACK (ACKnowledge) to all cooperating cells; send an ACK to the cooperating UE at the same time, and do not need to perform subsequent steps to complete the receiving process;
  • NAK Non-ACKnowledge
  • Cooperative cell If the TB check is correct, send an ACK to the cells in all the cooperating sets; if the TB check is incorrect, send the NAK to the cells in all the cooperating sets; when the TB is split into multiple CBs, the CB needs to be added. Check the result.
  • Step 3 The coordinated cell in the collaboration set coordinates data interaction according to the parsed result of step 2 received.
  • Cooperative cell If the ACK message of the serving cell is received, indicating that the serving cell receives the TB packet correctly, no interaction data is needed, and the receiving process has been completed;
  • the TB packet is correct, and only the TB is resolved in the cooperation set, when the TB of the serving cell is not sub-packetized, or the TB of the serving cell has a packet and all CBs are decoded, the TB is directly sent to the serving cell.
  • the CB that sends the solution of the serving cell is sent to the serving cell;
  • the decision algorithm is used to determine which pair of cells to send the correct information to the serving cell; if the judgment result is itself, then the TB or CB is sent to the service.
  • a cell specifically, when the TB of the serving cell is not sub-packetized, or the TB of the serving cell has a packet and all CBs are decoded, the TB is directly sent to the serving cell; when the TB of the serving cell is sub-packaged, and When there is a CB solution, the CB that sends the service cell error is sent to the serving cell;
  • the TB packet that is decoded is sent to the serving cell.
  • the unpacking result of each CB that is decoded by the serving cell in all the coordinated cells is determined:
  • the local cell sends the CB data packet to the serving cell;
  • the decision algorithm is used to determine which paired cell sends the correct CB data packet to the serving cell. If the judgment result is itself, then Sending the CB data packet to the serving cell;
  • the cell sends the CB packet to the serving cell.
  • Step 4 The serving cell receives the data packet sent by the coordinated cell, and performs the combined analysis.
  • the serving cell (self-solving TB packet error) processing the data packet sent by the coordinated cell: If the correct TB packet is received, directly replace the TB packet that is decrypted by itself into the correct one; if the soft bit level is received Or if the IQ level data is combined, the collected data of the same level is combined for further analysis.
  • the CB packet is received and the coordinated cell is de-paired, the CB is replaced with the de-corrected CB; if the CB packet is received and the coordinated cell is decoded, the CB-level merge is used.
  • the method combines the CB results that are decoded by multiple cells; and then further solves the TB with the corrected CB information.
  • Step 5 After the service cell is merged and unpacked, when the CB level information is combined and the TB result is correct, if no ACK is sent to the UE, an ACK is sent to the UE. When the CB level information is combined and the TB result is correct, an error is sent, and the NAK is sent. UE; complete the unpacking process.
  • the processing flowchart of the serving cell is as shown in FIG. 3, and mainly includes the following steps:
  • Step 301 The serving cell receives the data of the UE.
  • Step 302 After receiving the data of the coordinated UE, the serving cell independently parses and saves the TB and/or CB data and the analysis result thereof.
  • the parsing result includes a check result of the TB of the serving cell.
  • the parsing result of the CB is also included. If the TB is split into multiple CBs during the unpacking process, each CB packet and its check result are also saved.
  • Step 303 The serving cell determines whether the unpacking is correct. If the TB check is correct, step 304 is performed. If the TB check is incorrect, step 305 is performed.
  • Step 304 Send an ACK (ACKnowledge) to all the coordinated cells, and send an ACK to the coordinated UE. Then, go directly to step 311 to complete the process.
  • ACK acknowledge
  • Step 305 If the TB check is incorrect, send a NAK (Non-ACKnowledge) to all coordinated cells, and when the TB is divided into multiple CBs, the CB check result needs to be added; and wait for the coordinated cell to send. The TB/CB analysis results came over.
  • NAK Non-ACKnowledge
  • Step 306 Receive the parsing result sent by the coordinated cell.
  • Step 307 Check whether the unpacking is correct in the coordinated cell, if yes, go to step 308; if not, go to step 309.
  • Step 308 If the TB unpacking result of the coordinated cell has an ACK, send an ACK to the UE, and send the data packet sent by the other coordinated cell to the upper layer, and then go directly to step 311 to complete the receiving process. .
  • Step 309 If there is no coordinated cell unpaired TB in the cooperation set, the serving cell merges and parses according to the received data packet of the coordinated cell.
  • Step 309 specifically includes:
  • the serving cell receives the CB packet and is unpaired by the coordinated cell, the CB is replaced with the wrong CB;
  • the serving cell receives the CB packet and is coordinated by the coordinated cell
  • the CB level combining method is used to merge the CB results that are decoded by the multiple cells; and then, the corrected CB information is used to further solve the TB;
  • Step 310 After the cell is merged and unpacked, when the CB level information is combined and the TB result is correct, if the ACK is not sent to the UE, the ACK is sent to the UE; if not, the NAK is sent to the UE.
  • Step 311 Complete the unpacking process.
  • the processing flow diagram of the coordinated cell is as shown in FIG. 4, and mainly includes the following steps:
  • Step 401 The coordinated cell receives the data of the UE.
  • Step 402 After receiving the data of the coordinated UE, the coordinated cell independently parses and saves the TB and/or CB data and the parsing result thereof.
  • the parsing result includes a check result of the TB of the serving cell.
  • the parsing result of the CB is also included. If the TB is split into multiple CBs during the unpacking process, each CB packet and its check result are also saved.
  • Step 403 The coordinated cell sends the parsing result to other cells in all the cooperative sets.
  • Step 404 Receive an analysis result sent by all other cells in the collaboration set.
  • Step 405 Determine whether the serving cell unpacking is correct. If yes, go directly to step 219 to complete the process; if no, go to step 406.
  • Step 406 Determine whether the uncoupling of the coordinated cell is correct. If yes, go to step 407; if no, go to step 408.
  • Step 407 Determine whether other cells in the cooperation set are also unpacked correctly. If yes, go to step 409; if no, go to step 410.
  • Step 408 Determine whether other cells in the collaboration set are unpacked correctly. If yes, go directly to step 419 to complete the process; if no, go to step 412.
  • Step 409 Determine whether the coordinated cell sends the correct TB data packet to the serving cell. If yes, go to step 411. If no, go directly to step 419 to complete the process, and send the correct TB data packet to the other cell. Community.
  • Step 410 The coordinated cell sends a TB/CB data packet to the serving cell.
  • Step 411 The coordinated cell sends a TB/CB data packet to the serving cell.
  • the sending TB/CB means that when the TB is not divided into multiple CBs, the TB is sent; when the TB is divided into multiple CBs, and when only the partial CB is decoded by the serving cell, the CB of the decoding part is sent; The TB is divided into multiple CBs, and all CBs in the serving cell are decoded, and the TB is transmitted.
  • Step 412 Determine whether the CB co-communication cell that is decoded by the serving cell is unpaired. If yes, go to step 413; if no, go to step 417.
  • Step 413 Determine whether other cells in the cooperation set also solve the correct CB data packet. If yes, go to step 414; if no, go to step 415.
  • Step 414 Send the corresponding CB data packet to the serving cell.
  • Step 415 Determine whether the current cell sends the correct CB data packet to the serving cell, and if yes, go to step 416; if no, go directly to step 419 to complete the process.
  • Step 416 Send the correct CB data packet to the serving cell.
  • Step 417 Determine whether there are other cells in the collaboration set to solve the correct CB data packet. If yes, go directly to step 419 to complete the process; if no, go to step 418.
  • Step 418 Send the corresponding CB data packet to the serving cell.
  • Step 419 Complete the unpacking process.
  • the scenario in this embodiment includes the following base stations:
  • eNB1 (celll l, celll2, celll3);
  • eNB2 (cell21, cell22, cell23);
  • eNB3 (cell31, cell32, cell33).
  • this example analyzes UE00 in cell02.
  • Set the service of UE00 small The area is cell02, and there are three cells in the coordinated cell set: cell02, celll l, and cell23, which belong to the eNB0, eNB1, and eNB2 base stations, respectively.
  • the X2 interface between the base stations is connected.
  • Uplink cooperation process UE00 sends data, and all coordinated cells receive, and after independent decoding, determine whether to merge according to the result.
  • the specific steps of this example are described below:
  • Step 1 After all the cells in the cooperation set receive the data of the UE, perform independent unpacking and save the TB unpacking result. If it is determined that the TB is divided into multiple CBs during the unpacking process, the unpacking of each CB is saved. result.
  • the independent unpacking results of the serving cell and the cooperating cell are as follows:
  • Step 2 Interacting respective independent unpacking results in the cells of the cooperation set; if the condition is met, the serving cell simultaneously sends a response message to the UE.
  • the serving cell If the TB is unpacked correctly, an ACK (ACKnowledge Acknowledgment) is sent to all the coordinated cells; and an ACK is sent to the UE at the same time, and the subsequent steps are not required to complete the receiving process;
  • ACK acknowledge Acknowledgment
  • NAK Non-ACKnowledge Negative Answer
  • Cooperative cell If the TB is unpacked correctly, the ACK is sent to the cells in all the cooperative sets; if the TB is unpacked, the NAK is sent to the cells in all the cooperative sets; when the TB is split into multiple CBs, the CB is also added. Unpack the result.
  • the unpacking result of the CB can be indicated by a bitmap, where a bit value of 0 indicates that the corresponding CB is parsed correctly, and a bit value of 1 indicates a parsing error;
  • the result of unpacking the CB may also be indicated by the number of CBs that are decoded and the list of erroneous CB codes.
  • the number of CBs that are erroneous is two, and the numbers from small to large are 0 and 2, respectively, indicating CB0 and CB2 is decoded, and the rest of the CB is parsed correctly.
  • bitmap is used to indicate.
  • the serving cell TB is decrypted.
  • the NAK that sends the TB and the ACK that sends the TB are sent to the NAK that sends the TB and the coordinated cell TB is resolved.
  • the analysis result of the CB is the result of the analysis of the cell02 and the cell23 CB (011)
  • the CB part of the serving cell is unpaired. (001) give cellll and give cell02 and cellll
  • the serving cell TB is decrypted, and the NAK transmitting the TB and the NAK transmitting the TB and the ACK transmitting the TB are de-paired to one coordinated cell TB, and the analysis result CB of the CB is the result of the analysis of the C02 and the cellll CB are all decoded (111) Give cellll and (011) to cell02 and
  • Step 3 The community of the collaboration set receives the unpacking result and analyzes it, and interacts with the data as needed.
  • the serving cell self-solving TB packet error: If there is an ACK in the TB unpacking result of the cooperating cell, an ACK is sent to the UE, and other cooperating cells are sent to send packets to themselves.
  • Cooperative cell If the ACK message of the serving cell is received, indicating that the serving cell TB packet is correct, no interactive data is required, and the receiving process has been completed;
  • the TB packet is correct, and only the TB is resolved in the cooperation set, when the TB of the serving cell is not sub-packetized, or the TB of the serving cell has a packet and all CBs are decoded, the TB is directly sent to the serving cell.
  • the CB that sends the solution of the serving cell is sent to the serving cell;
  • the decision is made.
  • the algorithm determines which de-paired cell sends the correct information to the serving cell; if the judgment result is itself, sends the TB or CB to the serving cell, specifically, when the TB of the serving cell is not sub-packet, or the TB of the serving cell is divided When the packet and all CBs are decoded, the TB is directly sent to the serving cell; when the TB of the serving cell has a packet, and there is a CB, the CB that is sent by the serving cell is sent to the serving cell;
  • the local cell sends the CB data packet to the serving cell;
  • the decision algorithm is used to determine which paired cell sends the correct CB data packet to the serving cell. If the judgment result is itself, then Sending the correct unpacking result of the CB to the serving cell;
  • the cell sends the CB packet to the serving cell.
  • the decision algorithm may be implemented according to a specific implementation, and only needs to ensure independent calculation in each cell, but finally only one determined result, for example, taking the maximum or minimum of the cell number in the set, etc., is not in the embodiment of the present invention. Make specific restrictions.
  • the serving cell TB decodes the parsing result information received by the parsing node received without processing, ends the present information, and ends the operation.
  • the serving cell TB is decrypted. There are 1. Processing the received parsing 1. Parsing the received result, 1. Parsing the received result, and decoding the result information by multiple coordinated cell TBs, sending an ACK to find that the serving cell has no solution to find the serving cell. There is no solution to the UE00 pair, there are multiple pairs in the coordinated cell, and there are multiple coordinated cells.
  • the serving cell TB is decrypted. There are 1. Processing the received parsing 1. Parsing the received result, 1. Parsing the received result, decomposing a coordinated cell TB, and transmitting the ACK.
  • the serving cell does not find the serving cell. And the CB part of the self-serving cell is solved to the UE00 pair, and the cooperative cell has only no solution, and the other associations
  • the serving cell TB is decrypted. There are 1. Processing the received parsing 1. Parsing the received result, 1. Parsing the received result, Decomposing a coordinated cell TB, Result information, Sending an ACK, discovering the serving cell, and discovering the serving cell by itself. No solution All the CBs of the serving cell are uncorrected to UE00, and the other pairs are coordinated.
  • the data 2 the end of this operation 2, to determine the service community for the entire CB error, so send a complete TB to the service area
  • the CB processes the received resolutions 1, and parses the received results. 1. Analyze the received results, partially solve the (a) information, and find all the small discovery all cells. Neither of the cells found that there is no solution in all the cells, waiting for the solution, and further analyzing the solution pair, and further analyzing the analysis of the CB in the coordinated cell of the CB in the cell that is decrypted by the data cell that receives the coordinated cell. Analysis of the coordinated cell: CB1: The solution of the cell: CB1: The cell is de-paired, there are other cell solutions, and other cells are solved, and the decision algorithm is executed. The decision algorithm is executed to determine which solution is sent to the cell.
  • the correct cell is sent, the correct result is sent, and the result is sent to the correct result, and the result is sent to the cell;
  • CB2 the non-local cell is sent, then the cell is decoded, and the other is not sent CB1;
  • CB2 the cell is unpaired, not Send only the cell solution, send
  • the cell sends 2, in summary, the cell sends the CB1 of the solution to the service to solve the CB2 to the service area.
  • the CB processes the received resolution 1, and parses the received results. 1. Analyze the received results, and partially solve the (2) information. It is found that all the small discoveries have not found that all the cells have no solution in all the cells, waiting for the solution, further analyzing the solution, and further analyzing the service.
  • the resolution of the CB in the coordinated cell of the CB in which the data cell of the coordinated cell is decoded by the coordinating cell is resolved: CB1: Only this case: CB1: The solution of the cell is solved, and the solution is sent. Wrong, there is a solution to the community, no
  • the cell sends 2
  • the cell sends the solution CB1 and the error-corrected CB2 to the service small
  • Step 4 The serving cell receives the data packet sent by the coordinated cell and combines the parsing.
  • the serving cell processes the data packet sent by the coordinated cell:
  • the received TB packet is the correct pair, the TB packet that has been decoded by itself is directly replaced with the correct one; if the soft bit level or the IQ level data is received, the collected peer data is merged. After that, do further analysis;
  • the CB level merge method is used to combine the CB results that are decoded by multiple cells;
  • the corrected CB information is used to further solve TB.
  • Step 5 After the service cell is combined and unpacked, when the CB level information is combined and the TB result is correct, if no ACK is sent to the UE, an ACK is sent to the UE; when not, the NAK is sent to the UE; process.
  • the serving cell TB solves the problem of the TB without the presence or absence of the serving cell. There is 1. Processing the received data packet - the CB2 of the pair is solved, and no multiple coordinated cell TB is used to replace the cell in the process of unpacking the cell. Solution
  • the serving cell TB is decrypted, and there is 1. Processing the received data packet - CB2 of the paired pair, None None A coordinated cell TB is used to solve the problem, and the data packet is used to replace the error in the process of unpacking the cell.
  • the service cell TB is decrypted, and there is 1. Processing the received data packet - the TB that is solved; None None A coordinated cell TB is resolved, 2. End this operation
  • All cell TB is decrypted, CB 1, processing the received data packet - CB1 of the solution is not partially partial solution (1)
  • CB2 of the reconciliation pair using the data packet instead of the local solution
  • All cell TB is decrypted, CB 1, processing the received data packet - CB1 without solution, no partial solution (2) (1) and CB2 (2) for error resolution, with solution pair
  • the embodiment of the present invention is also applicable to a scenario of a smaller TB, and the smaller TB refers to a bit level.
  • the TB is not divided into multiple CBs, and all the processes can be consistent with Embodiment 1, because there is no CB processing, and thus can be degraded into a typical TB unpacking process implementation.
  • Step 1 After all the cells in the cooperation set receive the data of the UE, perform independent unpacking and save the TB unpacking result.
  • Step 2 Interacting respective independent unpacking results in the cells of the cooperation set; if the condition is met, the serving cell simultaneously sends a response message to the UE.
  • the serving cell If the TB is unpacked correctly, an ACK (ACKnowledge Acknowledgment) is sent to all the coordinated cells; and an ACK is sent to the UE at the same time, and the subsequent steps are not required to complete the receiving process;
  • ACK acknowledge Acknowledgment
  • NAK Non-ACKnowledge Negative Answer
  • Cooperative cell If the TB is unpacked correctly, an ACK is sent to all cells in the cooperating set; if the TB is unpacked, the NAK is sent to the cells in all cooperating sets.
  • Step 3 The community of the collaboration set receives the unpacking result and analyzes it, and interacts with the data as needed.
  • the serving cell self-solving TB packet error: If there is an ACK in the TB unpacking result of the cooperating cell, the ACK is sent to the UE, and the subsequent steps are not required to complete the receiving process;
  • Cooperative cell If the ACK message of the serving cell is received, indicating that the serving cell TB packet is correct, no interactive data is required, and the receiving process has been completed;
  • the TB packet is correct, and the cooperation set only has its own solution, the TB is directly sent to the serving cell;
  • the decision algorithm is used to determine which pair of cells to send the correct information to the serving cell; if the judgment result is itself, the TB is directly sent. To the service community;
  • the soft bit information or the IQ sample data is sent to the serving cell.
  • Step 4 The serving cell receives the data packet sent by the coordinated cell, and merges and parses.
  • the serving cell processes the data packet sent by the coordinated cell: If the received TB packet is received, the TB packet that is decrypted by itself is directly replaced with the correct one; if the soft bit information is received Or IQ sample data, then the corresponding level of information is combined, and finally the terabyte information is parsed.
  • Step 5 After the service cell is merged and unpacked, when the TB result is correct, if no ACK is sent to the UE, an ACK is sent to the UE; when not, the NAK is sent to the UE; and the unpacking process is completed.
  • the embodiment of the present invention provides an optimization method for uplink CoMP cooperative set interaction information, which is only required to transmit TB level, CB level, soft bit level or IQ data in a joint processing typical method.
  • the part CB is transmitted, and is the most needed part of the serving cell, which reduces the pressure on the X2 interface/air interface; compared with the interactive soft bit information and the IQ data, the CB is a relatively high level information, which can alleviate the processing of the serving cell.
  • the burden is good; the advantages of the large TB are outstanding, and the small TB scenario does not introduce additional overhead.
  • the embodiment of the present invention further provides a system for information interaction in an uplink collaboration set.
  • the system mainly includes:
  • the check result interaction unit 601 is configured to perform a check result between the other cells in the cooperation set of the coordinated UE in the uplink cooperation process, where the check result includes a TB check result, and/or a CB check Result
  • the negotiation decision unit 602 in the coordinated cell is configured to determine, according to the check result of all the cells in the interaction, whether the coordinated cell needs to send data to the serving cell, and if If data needs to be sent to the serving cell, it is necessary to send all data or part of data to the serving cell.
  • the verification result interaction unit is configured to perform the verification result in the following manner: If the TB is resolved, the verification result of the interaction is ACK;
  • the verification result of the interaction is NAK
  • the verification result of the interaction includes the NAK, and the CB check result is also included.
  • the verification result includes: a transport block (TB) check result, and/or a code block (CB) check result.
  • the negotiation decision unit is configured to: when the coordinated cell meets one of the following conditions, the decision does not need to send data to the serving cell:
  • the TB check result of the serving cell is correct
  • the TB check result of the serving cell is an error
  • the TB check result of the coordinated cell is an error
  • the TB check result of the other coordinated cell in the collaboration set is correct
  • the decision needs to send all data to the serving cell:
  • the TB is not divided into multiple CBs, and the TB check results of the serving cell and the coordinated cell in the cooperation set are all wrong, and the coordinated cell needs to send all data to the serving cell;
  • the TB is divided into multiple CBs, and the TB and all CB check results of the serving cell are all wrong. If only the TB check result of the coordinated cell is correct in the cooperation set, the coordinated cell needs to be in the serving cell. Send all data;
  • the decision to send the coordinated cell needs to send all data to the serving cell; wherein, the sending all data refers to sending TB level, or soft bit level, or IQ sample level data.
  • the negotiation decision unit is configured to: when the coordinated cell meets one of the following conditions, the decision needs to send part of the data to the serving cell:
  • the TB is divided into multiple CBs, and the TB and all CB check results of the serving cell are all errors, and the TB check results of all the coordinated cells in the cooperation set are all errors; or, the TB of the serving cell If the verification result is an error and part of the CB check result is an error, then the negotiation decision unit The following judgment is made on one or more CBs whose CB check result is wrong:
  • the collaborative cell sends the corresponding CB data to the serving cell;
  • the coordinated cooperative cell is sent to the serving cell.
  • the corresponding CB data the coordinated cell sends the corresponding CB data to the serving cell;
  • the cooperative cell sends the corresponding CB data to the serving cell;
  • the sending part data refers to sending part CB data.
  • the system also includes a data transmitting unit 603 in the cooperating cell that is arranged to transmit data to the serving cell in accordance with the decision of the negotiating decision unit 602.
  • system further includes an analysis processing unit 604 in the serving cell:
  • the parsing processing unit 604 is configured to: when the serving cell TB is decoded, according to the received data sent by the coordinated cell and the corresponding check result, correct the peer data or merge the information according to the following manner, and Analyze:
  • the TB data is directly replaced with the TB data; if the CB data is received, and the coordinated cell that sends the CB data is unpaired, the CB data pair is used. After the corresponding CB data is corrected, the modified CB data is used to further parse the data packet;
  • the CB data is received, and the coordinated cell that sends the CB data is decoded, the CB data is combined with the corresponding CB data that is decoded by the multiple coordinated cells, and the combined CB information is used to perform the data packet. Further analysis;
  • each module or step in the foregoing embodiments may be implemented by a general-purpose computing device, which may be integrated in a single computing device or distributed in multiple computing devices.
  • they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from
  • the steps shown or described are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module.
  • embodiments of the invention are not limited to any particular combination of hardware and software.
  • the above technical solution transmits the TB level, the CB level, the soft bit level or the IQ data in the typical method of the joint processing, and selects the transmission TB or only the partial CB as needed, and ensures the most needed part of the serving cell when the overhead is minimized.
  • the pressure on the X2 interface/air interface is reduced, and the data transmission efficiency is improved; compared with the interactive soft bit information and the IQ data combination, CB is a relatively high level information, which can reduce the processing burden of the serving cell;
  • the performance is good, the advantage of the large TB scene is outstanding, and no additional overhead is introduced for the small TB scenario.

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Abstract

一种上行协作集内信息交互的方法及系统,所述方法包括:在上行协作过程中,协作用户设备(UE)的协作集内的所有小区之间交互校验结果;所述协作集内的各协作小区根据交互的所有小区的校验结果,获知服务小区解包错误时,通过分布协商决策出本协作小区是否需要向所述服务小区发送数据,以及,如果需要向所述服务小区发送数据,则需要向所述服务小区发送全部数据还是部分数据。所述方法和系统能够减少基站或者小区之间接口的数据量,使得传输的内容对协作更有效。

Description

一种上行协作集内信息交互的方法及系统
技术领域
本发明涉及通信技术领域, 更具体地, 涉及一种上行协作集内信息交互 的方法及系统。
背景技术
IMT-Advanced ( International Mobile Telecommunications-Advanced, 高级 国际移动通信)关键技术的研究从 20世纪末 3G ( 3rd Generation, 第三代移动 通信)技术标准化完成之时就开始了,是下一代宽带无线通信代表了信息技术 的主要发展方向。 IMT-advanced与现有的系统相比, 将实现更高的数据率和 更大的系统容量, 目标峰值速率为: 低速移动、 热点覆盖场景下 lGbit/s (千 兆 /秒) 以上, 高速移动、 广域覆盖场景下 100Mbit/s (百兆 /秒) 。
多点协作传输 /接收技术 ( Coordinated Multipoint transmission/reception , 简称为 CoMP )是 LTE- Advanced ( Long Term Evolution- Advanced, 高级长期 演进系统) 的关键技术之一。 CoMP 主要针对小区边缘地带的 UE ( User Equipment, 用户设备) 受干扰情况严重的情况, 由多个小区协作对受干扰 UE进行多点数据传送 /接收, 或通过多个小区间的协调、 调度, 以达到消除 小区间干扰, 提高信号质量, 提高用户和系统数据吞吐量, 进而提高系统频 谱利用率的目的。
CoMP技术的应用才艮据组网方式的不同可以分为 intra-eNB CoMP 和 inter-eNB CoMP两种。 Intra-eNB CoMP是指参与协作的小区 /扇区属于同一个 基站控制, 特点是协作小区间通信在一个基站内部完成, 不需要经过 X2接 口或空口的传输; inter-eNB CoMP是指参与协作的小区 /扇区属于多个基站控 制, 特点是协作小区间通信时信息需要经过 X2接口或者空口传输。 因此, intra-eNB CoMP的应用具有速度快, 协作方便的特点, 而 inter-eNB CoMP在 协作集的选择上更有灵活性, 因而具有更广泛的应用场景。
由于传统的协议中, 基站之间的接口, 例如 X2接口或者其他空口, 只 传输少量数据,因此 inter-eNB CoMP的应用会给 X2接口带来相当大的压力, 甚至因为接口能力限制协作效果。 因此对 X2口交互数据的优化很有必要。
CoMP技术按链路方向分为上行 CoMP和下行 CoMP两种。 下行 CoMP 是指多个协作小区联合为用户发送数据, 而上行 CoMP是指多个协作小区联 合接收 UE的数据。
目前标准中下行 CoMP 技术主要分为以下两类: 联合处理 (Joint processing, 简称为 JP ) :在每个协作集内的小区中都给用户发送相同的数据, 用户可利用类似宏分集的增益改善接收效果;协作调度 /波束赋形( Coordinated Scheduling/Coordinated Beamforming, 简称为 CS/CB ): 每个协作集内的小区 仅为自己小区中的用户发送数据, 并利用波束赋型技术使得信号对本小区用 户强的同时, 对相邻小区同样资源上的用户干扰弱, 以提高信噪比的方式改 善接收效果。
而上行 CoMP主要釆用协作小区之间联合处理, 即将多点接收到的 UE 上行数据进行合并处理以提高接收正确率。 联合处理上行数据要求协作小区 之间交互数据, 交互数据的时机分为协作小区对 UE数据解析前和解析后两 种。 解析数据过程会给协作小区带来额外的处理负担, 但是解析后的数据相 对于解析前的数据量变小, 因此能从一定程度上减轻基站之间接口的压力, 而且在服务小区没有解对而协作小区解对的情况下, 能快速对 UE做出肯定 应答响应。
目前讨论的上行联合处理方案一般都是交互解析后的结果, 即各协作集 内的小区先独立解析, 并交互最终的解析结果(即是否解对 TB ) , 如果服务 小区没有解对, 解对的协作小区会发送解对的 TB ( Transmit Block, 传输块) 给服务小区。
提案 R1-093797提出, 在所有 eNB ( enhanced Node B, 改进的基站 )之 间交互 ACK ( ACKnowledge , 肯定应答) /NAK ( Non-ACKnowledge , 否定应 答) , 细化了各种情况下的处理方式。 在所有基站都没解对的情况下, 交互 软比特信息, 或 IQ釆样数据( IQ samples ) , 进行合并后也能提高正确率。
提案 R1-09-3019提出增加 CB ( code block, 码块)级、 软比特级别的交 互。 从 TB、 CB、 软比特信息到 IQ釆样信息(IQ samples ) , 开销依次增大, 对 X2接口或者空口的压力也依次增大。该提案主要提出协作小区根据 X2接 口的能力选择一个最合适的级别的数据包发送给服务小区, 服务小区根据收 到的所有协作小区的数据包的级别依次进行合并, 并解析。
但是, 上述提案中, 仅提到 TB级、 CB级的交互, 但如果是服务小区解 错时,协作小区发送 TB级或者 CB级全部的数据, 则在信息交互时的开销是 比较大的, 对 X2接口 /空口的压力也较大, 数据传输效率不高。 而交互软 bit 信息和 IQ数据, 服务小区的处理负担较重。 发明内容
本发明实施方式所解决的技术问题是提供一种上行协作集内信息交互的 方法及系统, 能够减少基站或者小区之间接口的数据量, 使得传输的内容对 协作更有效。
为解决上述技术问题, 本发明实施例提供了一种上行协作集内信息交互 的方法, 所述方法包括:
在上行协作过程中, 协作用户设备 ( UE )的协作集内的所有小区之间交 互校验结果;
所述协作集内的各协作小区根据交互的所有小区的校验结果, 获知服务 小区解包错误时, 通过分布协商决策出本协作小区是否需要向所述服务小区 发送数据, 以及, 如果需要向所述服务小区发送数据, 则需要向所述服务小 区发送全部数据还是部分数据。
可选地, 所述通过分布协商决策出本协作小区是否需要向所述服务小区 发送数据, 以及, 如果需要向所述服务小区发送数据, 则需要向所述服务小 区发送全部数据还是部分数据的步骤包括:
判断所述本协作小区是否满足所述分布协商中关于不需要向服务小区发 送数据的条件, 如果是, 决策所述本协作小区不需要向服务小区发送数据; 如果否, 决策所述本协作小区需要向服务小区发送数据;
以及,
当决策所述本协作小区需要向服务小区发送数据时: 当所述本协作小区满足所述分布协商中关于需要向所述服务小区发送全 部数据的条件时, 决策所述本协作小区需要向服务小区发送全部数据;
当所述本协作小区满足所述分布协商中关于需要向所述服务小区发送部 分数据的条件时, 决策所述本协作小区需要向服务小区发送部分数据。 可选 地, 所述校验, 包括: 传输块(TB )校验, 和 /或码块(CB )校验。
可选地, 所述校验结果, 具体是指:
如果 TB 解对, 即 TB 校验结果为正确, 则所述校验结果为肯定应答 ( ACK ) ;
如果 TB解错, 即 TB校验结果为错误, 当 TB未分为多个 CB, 则所述 校验结果为否定应答(NAK ) ;
如果 TB解错, 即 TB校验结果为错误, 当 TB分为多个 CB时, 则所述 校验结果包括 NAK, 还包括 CB校验结果。
可选地, 所述分布协商, 包括:
所述协作小区满足下列条件之一时, 不需要向服务小区发送数据: 所述服务小区的 TB校验结果为正确;
或者, 所述服务小区的 TB校验结果为错误, 本协作小区的 TB校验结果 为错误, 且所述协作集内有其他协作小区的 TB校验结果为正确。
可选地, 所述分布协商, 具体包括:
所述协作小区满足下列条件之一时, 需要向服务小区发送全部数据: TB没有分为多个 CB, 所述协作集内服务小区和协作小区的的 TB校验 结果均为错误, 则本协作小区需要向服务小区发送全部数据;
或者, TB分为多个 CB,所述服务小区的 TB和全部 CB校验结果均为错 误, 所述协作集内只有本协作小区的 TB校验结果为正确, 则本协作小区需 要向服务小区发送全部数据;
或者, TB分为多个 CB,所述服务小区的 TB和全部 CB校验结果均为错 误, 本协作小区的 TB校验结果为正确, 且所述协作集内有其他协作小区的 TB校验结果为正确时, 按照统一的判决准则, 决策出本协作小区需要向服务 小区发送全部数据;
其中, 所述发送全部数据是指发送 TB级、 或软比特级、 或 IQ釆样级数 据。
可选地, 所述分布协商, 具体包括:
所述协作小区满足下列条件之一时, 需要向服务小区发送部分数据:
TB分为多个 CB,所述服务小区的 TB和全部 CB校验结果均为错误,且 所述协作集内全部协作小区的 TB校验结果都为错误时; 或者, 所述服务小 区的 TB校验结果为错误且部分 CB校验结果为错误时, 则对所述 CB校验结 果为错误的一个或多个 CB进行以下判断:
如果所述协作集内只有本协作小区相应的 CB校验结果为正确, 则本协 作小区向所述服务小区发送与 CB校验结果为正确的 CB对应的 CB数据; 如果本协作小区相应的 CB校验结果为正确, 所述协作集内有其他协作 小区相应的 CB校验结果也为正确, 按照统一的判决准则, 决策出本协作小 区向所述服务小区发送所述相应的 CB数据, 则本协作小区向所述服务小区 发送与 CB校验结果为正确的 CB对应的 CB数据;
如果所述协作集内所有协作小区的相应 CB校验结果均为错误, 则本协 作小区向所述服务小区发送与 CB校验结果为错误的 CB对应的 CB数据; 其中, 所述发送部分数据是指发送部分 CB数据。
可选地, 所述方法还包括:
所述服务小区在 TB解错时, 根据收到的所述协作小区发送的数据和对 应检验结果, 按照以下方式修正同级数据或者进行信息合并后, 对数据包进 行解析:
如果收到的是正确的 TB数据,则用该 TB数据直接替换解错的 TB数据; 如果收到的是 CB数据,且发送该 CB数据的协作小区是解对的,则用该 CB数据对相应 CB数据进行修正后, 用修正后的 CB数据对数据包做进一步 解析;
如果收到的是 CB数据,且发送该 CB数据的协作小区是解错的,则釆用 CB级合并多个协作小区都解错的相应 CB数据后, 用合并后的 CB信息对数 据包做进一步解析;
如果收到的是软比特级或者 IQ釆样级数据,则将收集到的同级数据进行 合并后, 做进一步解析。
此外, 本发明实施方式还提供了一种上行协作集内信息交互的系统, 所 述系统包括:
校验结果交互单元, 设置为在上行协作过程中, 与协作 UE的协作集内 所述校验结果交互单元所在小区之外的小区之间交互校验结果, 其中所述校 验包括 TB校验, 和 /或 CB校验;
协作小区中的协商决策单元, 设置为根据交互的所有小区的校验结果, 获知服务小区解包错误时, 通过分布协商决策出本协作小区是否需要向所述 服务小区发送数据, 以及, 如果需要向所述服务小区发送数据, 则需要向所 述服务小区发送全部数据还是部分数据。
可选地, 所述协商决策单元是设置为:
判断所述本协作小区是否满足所述分布协商中关于不需要向服务小区发 送数据的条件, 如果是, 决策所述本协作小区不需要向服务小区发送数据; 如果否, 决策所述本协作小区需要向服务小区发送数据;
以及,
当决策所述本协作小区需要向服务小区发送数据时:
当所述本协作小区满足所述分布协商中关于需要向所述服务小区发送全 部数据的条件时, 决策所述本协作小区需要向服务小区发送全部数据;
当所述本协作小区满足所述分布协商中关于需要向所述服务小区发送部 分数据的条件时, 决策所述本协作小区需要向服务小区发送部分数据。
可选地, 所述校验结果交互单元设置为, 按照以下方式交互校验结果: 如果 TB解对, 即 TB校验结果为正确, 则交互的校验结果为 ACK; 如果 TB解错, 即 TB校验结果为错误, 当 TB未分为多个 CB, 则交互 的校验结果为 NAK; 如果 TB解错, 即 TB校验结果为错误, 当 TB分为多个 CB时, 则交互 的校验结果包括 NAK, 还包括 CB校验结果。
可选地, 所述协商决策单元设置为, 在本协作小区满足下列条件之一时, 决策不需要向服务小区发送数据:
所述服务小区的 TB校验结果为正确;
或者, 所述服务小区的 TB校验结果为错误, 本协作小区的 TB校验结果 为错误, 且所述协作集内有其他协作小区的 TB校验结果为正确;
而在本协作小区满足下列条件之一时, 决策需要向服务小区发送全部数 据:
TB未分为多个 CB, 所述协作集内服务小区和协作小区的的 TB校验结 果均为错误, 则本协作小区需要向服务小区发送全部数据;
或者, TB分为多个 CB,所述服务小区的 TB和全部 CB校验结果均为错 误, 所述协作集内只有本协作小区的 TB校验结果为正确, 则本协作小区需 要向服务小区发送全部数据;
或者, 所述服务小区的 TB和全部 CB校验结果均为错误, 本协作小区的
TB校验结果为正确, 且所述协作集内有其他协作小区的 TB校验结果为正确 时, 按照统一的判决准则, 决策出本协作小区需要向服务小区发送全部数据; 其中, 所述发送全部数据是指发送 TB级、 或软比特级、 或 IQ釆样级数 据。
可选地, 所述协商决策单元设置为, 在本协作小区满足下列条件之一时, 决策需要向服务小区发送部分数据:
TB分为多个 CB,所述服务小区的 TB和全部 CB校验结果均为错误,且 所述协作集内全部协作小区的 TB校验结果都为错误时; 或者, 所述服务小 区的 TB校验结果为错误且部分 CB校验结果为错误时,则所述协商决策单元 对所述 CB校验结果为错误的一个或多个 CB进行以下判断:
如果所述协作集内只有本协作小区相应的 CB校验结果为正确, 则本协 作小区向所述服务小区发送与 CB校验结果为正确的 CB对应的 CB数据; 如果本协作小区相应的 CB校验结果为正确, 所述协作集内有其他协作 小区相应的 CB校验结果也为正确, 按照统一的判决准则, 决策出本协作小 区向所述服务小区发送与 CB校验结果为正确的 CB对应的 CB数据,则本协 作小区向所述服务小区发送与 CB校验结果为正确的 CB对应的 CB数据; 如果所述协作集内所有协作小区的相应 CB校验结果均为错误, 则本协 作小区向所述服务小区发送与 CB校验结果为正确的 CB对应的 CB数据; 其中, 所述发送部分数据是指发送部分 CB数据。
可选地, 所述系统还包括服务小区中的解析处理单元:
所述解析处理单元设置为, 当所述服务小区 TB解错时, 根据收到的所 述协作小区发送的数据和对应检验结果, 按照以下方式修正同级数据或者进 行信息合并后, 对数据包进行解析:
如果收到的是正确的 TB数据,则用该 TB数据直接替换解错的 TB数据; 如果收到的是 CB数据,且发送该 CB数据的协作小区是解对的,则用该 CB数据对相应 CB数据进行修正后, 用修正后的 CB数据对数据包做进一步 解析;
如果收到的是 CB数据,且发送该 CB数据的协作小区是解错的,则釆用
CB级合并多个协作小区都解错的相应 CB数据后, 用合并后的 CB信息对数 据包做进一步解析;
如果收到的是软比特级或者 IQ釆样级数据,则将收集到的同级数据进行 合并后, 做进一步解析。
本发明实施方式至少具有如下有益效果: 相对于联合处理典型方法中传 输 TB级、 CB级、 软 bit级或者 IQ数据, 按需选择传输 TB或者仅传输部分 CB, 保证开销最小的情况下, 传输服务小区最需要的部分, 减小了对 X2接 口 /空口的压力,提高了数据传输效率;相对于交互软 bit信息和 IQ数据合并, CB是相对较高层次的信息, 能减轻服务小区的处理负担; 另外, 该方法兼容 性较好, 对大 TB的场景优势突出, 对小 TB的场景也没有引入额外开销。 附图概述
此处所说明的附图用来提供对本发明实施方式的进一步理解, 构成本申 请的一部分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对 本发明的不当限定。 在附图中:
图 1为 LTE技术中发射机的结构示意图;
图 2为 LTE技术中接收机的结构示意图;
图 3为本发明实施例中服务小区的处理流程图;
图 4为本发明实施例中协作小区的处理流程图;
图 5为本发明应用示例的场景示意图;
图 6为本发明实施例中上行协作集内信息交互的系统的示意图。 本发明的较佳实施方式
下文中将结合附图对本发明的实施例进行详细说明。 需要说明的是, 在 不冲突的情况下, 本申请中的实施例及实施例中的特征可以相互任意组合。
在本发明的实施方式中, 针对上行 CoMP中基站间交互数据的特点, 提 出一种在协作集内交互信息的方法, 对现有的交互方式进行改进, 使得基站 或者小区之间接口的数据量减少, 传输的内容对协作更有效。
为实现上述目的, 本发明实施方式的技术方案大致描述如下:
通过对 LTE中数据发送的过程进行研究可以得知, 物理层对数据的处理 分为两部分, 比特级处理和符号级处理, 发端和收端的比特级处理过程分别 参见图 1和图 2。
在 bit级处理中, 发端处理: TB ( Transmit Block, 传输块)加 24位 CRC
( Cyclic Redundancy Check, 循环冗余校验)码后利用码块分割算法分割成 CB ( Code Block, 码块)。 当 CB个数大于 1时, 每个 CB加 24位 CRC校验 码后再做后续的处理; 如果 TB 的比特数较少, 不需要分割, 就不需要再添 力口 CB的 CRC。 即, 当存在多个 CB时, TB有 CRC校验、 CB也有 CRC校 验。 因此, 在收端, TB以及每个 CB的解析结果都可以通过 CB级的 CRC校 验结果得知。
基于以上思路, 本发明实施方式在上行协作过程中, 协作集内的小区交 互校验结果, 分布协商协作小区是否需要发送数据给服务小区。 当需要发送 时, 协作小区可以只发送部分数据包或者全部数据包给服务小区, 服务小区 利用收到的信息修正自己的同级数据, 完成解包过程。
其中, 所述协作集内的小区包括服务小区和参与协作的协作小区。 在上 行协作过程中, 用户发送数据, 所述协作集内的小区都进行接收, 并独立解 包。
所述分布协商是指: 协作小区釆用分布式算法决策出需要发送数据的协 作小区, 且保证在不同的协作小区计算的结果是一致的。 具体而言, 是指: 每个协作小区决策出本协作小区是否需要向服务小区发送数据, 以及, 如果 需要发送, 则需要向服务小区发送全部数据还是部分数据。
所述发送部分数据包是指: 数据包 TB较大时, 在编码过程中 TB分为多 个 CB, 并且分布协商的结果为协作小区只需要发送部分 CB。
所述发送全部数据包是指: 数据包 TB较小时, 编码过程中 TB不需要分 割,或者在 TB分割为多个 CB时分布协商的结果为协作小区需要发送全部数 据。
可选地, 所述发送部分数据包是指发送部分 CB级数据包。
可选地, 所述发送全部数据是指发送 TB级、 或软比特级、 或 IQ釆样级 的数据。
具体地, 本发明实施方式提供一种上行协作集信息交互方法, 包括: 步骤 1 : 协作集内的小区收到协作 UE的数据后独立解析, 保存 TB数据 及其校验结果;
如果在解包过程中 TB分割为多个 CB时,还要保存每个 CB的数据包及 其校验结果。
步骤 2: 协作集内的小区之间交互各自的校验结果; 如果满足条件, 服 务小区同时发送应答消息给协作 UE。
所述校验结果包括本小区的 TB的校验结果, 当解包过程中 TB分割为多 个 CB时, 还包括 CB的校验结果。 服务小区: 如果 TB校验正确, 发送 ACK ( ACKnowledge, 肯定应答) 给所有协作小区; 同时发送 ACK给协作 UE, 不需要执行后续步骤, 完成本 次接收过程;
如果 TB校验错误, 发送 NAK ( Non-ACKnowledge, 否定应答)给所有 协作小区; 当 TB分割为多个 CB时, 还需加上 CB的校验结果。
协作小区: 如果 TB校验正确, 发送 ACK给所有协作集内的小区; 如果 TB校验错误, 发送 NAK给所有协作集内的小区; 当 TB分割为多 个 CB时, 还需加上 CB的校验结果。
步骤 3: 所述协作集内的协作小区根据接收到的步骤 2的解析结果协调 数据交互。
服务小区 (解 TB包错误 ) :
如果收到协作小区的 TB解包结果有 ACK, 则发送 ACK给 UE, 等待其 他协作小区发送数据包给自己。
协作小区: 如果收到服务小区的 ACK消息, 表明服务小区接收 TB包正 确, 则不需要交互数据, 本次接收过程已经完成;
如果自己解 TB包正确, 并且协作集内只有自己解对, 当服务小区的 TB 没有分包, 或者服务小区的 TB有分包且所有 CB都解错时, 直接发送已解对 的 TB给服务小区; 当服务小区的 TB有分包, 并且有 CB解对时, 发送服务 小区解错的 CB给服务小区;
如果自己解 TB 包正确, 并且协作集内还有其他小区也解对, 利用判决 算法判断哪一个解对的小区发送正确的信息给服务小区; 如果判断结果是自 己, 则发送 TB或者 CB给服务小区, 具体地, 当服务小区的 TB没有分包, 或者服务小区的 TB有分包且所有 CB都解错时, 直接发送已解对的 TB给服 务小区; 当服务小区的 TB有分包, 并且有 CB解对时, 发送服务小区解错的 CB给服务小区;
如果自己解 TB包错误, 并且协作集内有小区解对 TB时, 则不需要发送 数据包, 本小区已经完成了此次接收过程;
如果自己解 TB包错误, 并且协作集内没有小区解对 TB时, 当 TB没有 分包时, 则发送解错的 TB包给服务小区; 当 TB有分包时, 则针对服务小区 解错的每个 CB在所有协作小区内的解包结果进行判断:
如果某 CB在本小区解包正确, 并且在其他协作小区均解包错误, 则本 小区发送该 CB数据包给服务小区;
如果某 CB在本小区解包正确, 并且在其他协作小区中也有解包正确的, 则利用判决算法判断哪一个解对的小区发送正确的 CB数据包给服务小区, 如果判断结果是自己, 则发送该 CB数据包给服务小区;
如果某 CB在本小区解包错误, 并且其他协作小区有解包正确的, 则本 小区不需要发送该 CB数据包;
如果某 CB在本小区解包错误, 并且其他协作小区解包均错误, 则本小 区发送该 CB数据包给服务小区。
步骤四: 服务小区收到协作小区发送的数据包, 合并解析。
服务小区: (自己解 TB 包错误)处理协作小区发的数据包: 如果收到 的是正确的 TB包, 则直接将自己解错的 TB包替换为正确的; 如果收到的是 软比特级或者 IQ釆样级数据, 则将收集到的同级数据进行合并后,做进一步 解析。
如果收到的是 CB包,并且是协作小区解对的,则用解对的 CB替换自己 解错的; 如果收到的是 CB包, 并且是协作小区解错的, 则釆用 CB级合并方 法合并多个小区都解错的该 CB结果; 然后, 用修正后的 CB信息进一步解 TB。
步骤五: 服务小区合并解包后, 当 CB级信息合并解析 TB结果正确时, 如果没有发送 ACK给 UE, 则发送 ACK给 UE; 当 CB级信息合并解析 TB 结果正确时错误时, 发送 NAK给 UE; 完成本次解包过程。
本发明实施例的上行协作集信息交互的方法中, 服务小区的处理流程图 如图 3所示, 主要包括以下步骤:
步骤 301 : 服务小区接收到 UE的数据。 步骤 302: 服务小区收到协作 UE的数据后, 独立解析并保存 TB和 /或 CB数据及其解析结果。
其中, 所述解析结果包括服务小区的 TB的校验结果, 当解包过程中 TB 分割为多个 CB时, 还包括 CB的解析结果。 如果在解包过程中 TB分割为多 个 CB时, 还要保存每个 CB的数据包及其校验结果。
步骤 303: 服务小区判断解包是否正确, 如果 TB校验正确, 则执行步骤 304, 如果 TB校验错误, 执行步骤 305。
步骤 304: 发送 ACK ( ACKnowledge, 肯定应答)给所有协作小区, 同 时发送 ACK给协作 UE; 之后, 直接转到步骤 311 , 完成本次流程。
步骤 305: 如果 TB校验错误, 则发送 NAK ( Non-ACKnowledge, 否定 应答)给所有协作小区, 且当 TB分割为多个 CB时, 还需加上 CB的校验结 果; 并等待协作小区发送 TB/CB解析结果过来。
步骤 306: 收到协作小区发的解析结果。
步骤 307:检查协作小区中是否有解包正确的,如果有,则执行步骤 308; 如果没有, 执行步骤 309。
步骤 308: 如果收到协作小区的 TB解包结果有 ACK, 则发送 ACK给 UE, 待接收到其他协作小区发送的数据包后发送给上层, 之后, 直接转到步 骤 311 , 完成本次接收过程。
步骤 309: 如果协作集内没有协作小区解对 TB, 则服务小区根据接收到 的协作小区的数据包, 合并解析。
步骤 309具体包括:
如果服务小区收到的是 CB包, 并且是协作小区解对的, 则用解对的 CB 替换自己解错的;
如果服务小区收到的是 CB包,并且是协作小区解错的,则釆用 CB级合 并方法合并多个小区都解错的该 CB结果; 然后,用修正后的 CB信息进一步 解 TB;
如果收到的是软比特级或者 IQ釆样级数据,则将收集到的同级数据进行 合并后, 做进一步解析。 步骤 310:服务小区合并解包后, 当 CB级信息合并解析 TB结果正确时, 如果没有发送 ACK给 UE, 则发送 ACK给 UE; 不正确时, 则发送 NAK给 UE。
步骤 311 : 完成本次解包处理流程。
本发明另一实施例的上行协作集信息交互的方法中, 协作小区的处理流 程图如图 4所示, 主要包括以下步骤:
步骤 401 : 协作小区接收到 UE的数据。
步骤 402: 协作小区收到协作 UE的数据后, 独立解析并保存 TB和 /或 CB数据及其解析结果。
其中, 所述解析结果包括服务小区的 TB的校验结果, 当解包过程中 TB 分割为多个 CB时, 还包括 CB的解析结果。 如果在解包过程中 TB分割为多 个 CB时, 还要保存每个 CB的数据包及其校验结果。
步骤 403: 协作小区发送解析结果给所有协作集内的其他小区。
步骤 404: 接收协作集内的所有其他小区发送来的解析结果。
步骤 405: 判断服务小区解包是否正确, 如果是, 则直接转到步骤 219, 完成本次流程; 如果否, 执行步骤 406。
步骤 406: 判断本协作小区解包是否正确, 如果是, 则执行步骤 407; 如 果否, 执行步骤 408。
步骤 407: 判断协作集内是否有其他小区也有解包正确的, 如果是, 则 执行步骤 409; 如果否, 执行步骤 410。
步骤 408: 判断协作集内是否有其他小区解包正确的, 如果是, 则直接 转到步骤 419, 完成本次流程; 如果否, 执行步骤 412。
步骤 409:判断是否本协作小区发送正确 TB数据包给服务小区,如果是, 则执行步骤 411 ; 如果否, 直接转到步骤 419, 完成本次流程, 而由其他小区 发送正确 TB数据包给服务小区。
步骤 410: 本协作小区发送 TB/CB数据包给服务小区。 步骤 411 : 本协作小区发送 TB/CB数据包给服务小区。
其中, 发送 TB/CB是指, 当 TB没有分为多个 CB时, 发送 TB; 当 TB 分为多个 CB, 且当服务小区仅有部分 CB解错时, 则发送解错部分的 CB; 当 TB分为多个 CB, 且服务小区所有 CB都解错, 则发送 TB。
步骤 412: 判断服务小区解错的 CB本协作小区是否解对, 如果是, 则执 行步骤 413; 如果否, 执行步骤 417。
步骤 413: 判断协作集内是否也有其他小区解该 CB数据包正确的,如果 是, 则执行步骤 414; 如果否, 执行步骤 415。
步骤 414: 发送相应 CB数据包给服务小区。
步骤 415: 判断是否本小区发送正确 CB数据包给服务小区, 如果是, 则 执行步骤 416; 如果否, 直接转到步骤 419, 完成本次流程。
步骤 416: 发送正确 CB数据包给服务小区。
步骤 417:判断协作集内是否有其他小区解该 CB数据包正确的,如果是, 则直接转到步骤 419, 完成本次流程; 如果否, 执行步骤 418。
步骤 418: 发送相应 CB数据包给服务小区。
步骤 419: 完成本次解包处理流程。
以下将结合本发明应用示例对本发明实施方式的技术方案的实施作更详 细的说明。
应用示例一: 较大的 TB应用场景
如附图 5所示, 本实施例场景中包括如下基站:
eNBO ( cellO 1、 cell02、 cell03 ) ;
eNBl ( celll l、 celll2、 celll3 ) ;
eNB2 ( cell21、 cell22、 cell23 ) ;
eNB3 ( cell31、 cell32、 cell33 ) 。
为不失一般性, 此示例对 cell02中的 UE00进行分析。设 UE00的服务小 区是 cell02,协作小区集内有 3个小区: cell02、 celll l、 cell23 ,分别属于 eNB0、 eNB 1、 eNB2基站。 基站之间 X2接口连接。
设 UE00发送的数据包为 TBO, bit级处理时分为 3个 CB, 分别为 CB0、 CB1、 CB2。
上行协作过程: UE00发送数据, 所有协作小区接收, 分别独立解码后, 根据结果确定是否进行合并。 该示例的具体步骤描述如下:
步骤 1 : 所有在协作集内的小区收到 UE的数据后, 进行独立解包, 保存 TB解包结果; 如果在解包过程中判断 TB分割为多个 CB, 则保存每个 CB的 解包结果。
假定本示例中, 服务小区和协作小区的独立解包结果如下表所示:
表 1 小区独立解码并保存解码结果
Figure imgf000018_0001
步骤 2: 在协作集的小区中交互各自的独立解包结果; 如果满足条件, 服务小区同时发送应答消息给 UE。
服务小区: 如果 TB解包正确, 发送 ACK ( ACKnowledge肯定应答)给 所有协作小区; 同时发送 ACK给 UE, 不需要执行后续步骤, 完成本次接收 过程;
如果 TB解包错误, 发送 NAK ( Non-ACKnowledge 否定应答)给所有协 作小区; 当 TB分割为多个 CB时, 还需加上 CB的解包结果。
协作小区: 如果 TB解包正确, 发送 ACK给所有协作集内的小区; 如果 TB解包错误, 发送 NAK给所有协作集内的小区; 当 TB分割为多 个 CB时, 还需加上 CB的解包结果。
其中, CB的解包结果可以用 bitmap来指示, 其中 bit值为 0的表示对应 的 CB解析正确, bit值为 1表示解析错误;
或者, CB的解包结果也可以用解错的 CB个数加错误 CB编码列表来指 示, 例如,错误的 CB个数为 2个,按从小到大的序号分别为 0、 2,表示 CB0 和 CB2解错, 其余的 CB解析正确。
需要说明的是, CB解包结果用哪一种方式都不影响发明的实现, 下表中 釆用 bitmap的方式来指示。
表 2 小区独立解码后交互解码结果
Figure imgf000019_0001
(001)给 cellll和
cell23
3 服务小区 TB解错, 有 发送 TB的 NAK及 发送 TB的 ACK给 发送 TB 的 NAK及 一个协作小区 TB解对, CB 的解析结果 cell02和 cell23 CB的解析结果(011) 服务小区 CB部分解对 (001)给 cellll和 给 cell02和 cellll
cell23
4 服务小区 TB解错, 有 发送 TB的 NAK及 发送 TB的 NAK及 发送 TB 的 ACK给 一个协作小区 TB解对, CB 的解析结果 CB 的解析结果 cell02和 cellll 服务小区 CB全部解错 (111)给 cellll和 (011)给 cell02和
cell23 cell23
5 所有小区 TB解错, CB 发送 TB的 NAK及 发送 TB的 NAK及 发送 TB 的 NAK及 部分解对 (一) CB 的解析结果 CB 的解析结果 CB的解析结果(100)
(011)给 cellll和 (001)给 cell02禾口 给 cell02和 cellll cell23 cell23
6 所有小区 TB解错, CB 发送 TB的 NAK及 发送 TB的 NAK及 发送 TB 的 NAK及 部分解对 (二) CB 的解析结果 CB 的解析结果 CB的解析结果(011)
(011)给 cellll和 (101)给 cell02禾口 给 cell02和 cellll cell23 cell23
步骤 3: 协作集的小区收到解包结果后进行分析, 并按需交互数据。 服务小区 (自己解 TB 包错误) : 如果收到协作小区的 TB解包结果有 ACK, 则发送 ACK给 UE, 等待其他协作小区发送数据包给自己。
协作小区:如果收到服务小区的 ACK消息,表明服务小区解 TB包正确, 则不需要交互数据, 本次接收过程已经完成;
如果自己解 TB包正确, 并且协作集内只有自己解对, 当服务小区的 TB 没有分包, 或者服务小区的 TB有分包且所有 CB都解错时, 直接发送已解对 的 TB给服务小区; 当服务小区的 TB有分包, 并且有 CB解对时, 发送服务 小区解错的 CB给服务小区;
如果自己解 TB 包正确, 并且协作集内还有其他小区也解对, 利用判决 算法判断哪一个解对的小区发送正确的信息给服务小区; 如果判断结果是自 己, 则发送 TB或者 CB给服务小区, 具体地, 当服务小区的 TB没有分包, 或者服务小区的 TB有分包且所有 CB都解错时, 直接发送已解对的 TB给服 务小区; 当服务小区的 TB有分包, 并且有 CB解对时, 发送服务小区解错的 CB给服务小区;
如果自己解 TB包错误, 并且协作集内有小区解对 TB时, 则不需要发送 数据包, 本小区已经完成了此次接收过程;
如果自己解 TB包错误, 并且协作集内没有小区解对 TB时, 当 TB没有 分包时, 则发送软比特级数据或者 IQ釆样级数据; 当 TB有分包时, 则针对 服务小区解错的每个 CB在所有协作小区内的解包结果进行判断:
如果某 CB在本小区解包正确, 并且在其他协作小区均解包错误, 则本 小区发送该 CB数据包给服务小区;
如果某 CB在本小区解包正确, 并且在其他协作小区中也有解包正确的, 则利用判决算法判断哪一个解对的小区发送正确的 CB数据包给服务小区, 如果判断结果是自己, 则发送该 CB的正确解包结果给服务小区;
如果某 CB在本小区解包错误, 并且其他协作小区有解包正确的, 则本 小区不需要发送该 CB数据包;
如果某 CB在本小区解包错误, 并且其他协作小区解包均错误, 则本小 区发送该 CB的数据包给服务小区。
其中,在发送 TB包或者 CB包给服务小区时, 需要标注该包是自己解对 的还是解错的。
其中, 判决算法可视具体实现而定, 只需保证在各个小区独立计算, 但 是最终只有一个确定的结果, 例如, 取集合中小区编号的最大或者最小, 等 等, 本发明实施方式中并不做具体限制。
表 3 小区交互解码结果后交互数据
Figure imgf000021_0001
服务小区 TB解对 无 处理接收到的解析结 处理接收到的解析结 果信息, 结束本次操 果信息, 结束本次操 作 作
服务小区 TB解错, 有 1、处理接收到的解析 1、 解析收到的结果, 1、 解析收到的结果, 多个协作小区 TB解对 结果信息, 发送 ACK 发现服务小区没有解 发现服务小区没有解 给 UE00 对, 协作小区有多个 对, 协作小区有多个
2、等待接收协作小区 解对, 执行判决算法 解对, 执行判决算法 的数据 判断哪个解对的小区 判断哪个解对的小区 发送正确结果, 设结 发送正确结果, 设结 果为本小区发送; 果为非本小区发送;
2、判断服务小区为部 2、 结束本次操作 分 CB解错, 因此发
送服务小区解错而自
己解对的 CB : CB2
给服务小区
3、 结束本次操作
服务小区 TB解错, 有 1、处理接收到的解析 1、 解析收到的结果, 1、 解析收到的结果, 一个协作小区 TB解对, 结果信息, 发送 ACK 发现服务小区没有解 发现服务小区和自己 服务小区 CB部分解对 给 UE00 对, 协作小区只有自 都没有解对, 其他协
2、等待接收协作小区 己解对; 作小区有解对的; 的数据 2、判断服务小区为部 2、 结束本次操作 分 CB解错, 因此发
送服务小区解错而自
己解对的 CB : CB2
给服务小区
3、 结束本次操作
服务小区 TB解错, 有 1、处理接收到的解析 1、 解析收到的结果, 1、 解析收到的结果, 一个协作小区 TB解对, 结果信息, 发送 ACK 发现服务小区和自己 发现服务小区没有解 服务小区 CB全部解错 给 UE00 都没有解对, 其他协 对, 协作小区只有自
2、等待接收协作小区 作小区有解对的; 己解对;
的数据 2、 结束本次操作 2、判断服务小区为全 部 CB解错, 因此发 送完整 TB给服务小 区
3、 结束本次操作 所有小区 TB解错, CB 处理接收到的解析结 1、 解析收到的结果, 1、 解析收到的结果, 部分解对 (一) 果信息, 发现所有小 发现所有小区都没有 发现所有小区都没有 区都没有解对, 等待 解对, 进一步分析服 解对, 进一步分析服 接收协作小区的数据 务小区解错的 CB在 务小区解错的 CB在 协作小区的解析情 协作小区的解析情 况: CB1 : 本小区解 况: CB1 : 本小区解 对, 还有其他小区解 对, 还有其他小区解 对, 执行判决算法判 对, 执行判决算法判 断哪个解对的小区发 断哪个解对的小区发 送正确结果, 设结果 送正确结果, 设结果 为本小区发送; CB2: 为非本小区发送, 则 本小区解错, 有其他 不发送 CB1 ; CB2: 小区解对, 不发送 只有本小区解对, 发
CB2 送 CB2
2、综上, 本小区发送 2、综上, 本小区发送 解对的 CB1给服务小 解对的 CB2给服务小 区 区
3、 结束本次操作 3、 结束本次操作 所有小区 TB解错, CB 处理接收到的解析结 1、 解析收到的结果, 1、 解析收到的结果, 部分解对 (二) 果信息, 发现所有小 发现所有小区都没有 发现所有小区都没有 区都没有解对, 等待 解对, 进一步分析服 解对, 进一步分析服 接收协作小区的数据 务小区解错的 CB在 务小区解错的 CB在 协作小区的解析情 协作小区的解析情 况: CB1 : 只有本小 况: CB1 : 本小区解 区解对, 发送解对的 错, 有小区解对, 不
CB1 ; CB2:所有小区 发送 CB1 ; CB2: 所 都解错, 发送解错的 有小区都解错, 发送
CB2 解错的 CB2
2、综上, 本小区发送 2、综上, 本小区发送 解对的 CB1和解错的 解错的 CB2给服务小
CB2给服务小区 区
3、 结束本次操作 3、 结束本次操作 步骤 4: 服务小区收到协作小区发送的数据包, 合并解析。
服务小区 (自己解 TB包错误)处理协作小区发的数据包:
如果收到的是解对的 TB包, 则直接将自己解错的 TB包替换为正确的; 如果收到的是软比特级或者 IQ釆样级数据,则将收集到的同级数据进行合并 后, 做进一步解析;
如果收到的是 CB包,并且是协作小区解对的,则用解对的 CB替换自己 解错的;
如果收到的是 CB包,并且是协作小区解错的,则釆用 CB级合并方法合 并多个小区都解错的该 CB结果;
然后, 用修正后的 CB信息进一步解 TB。
步骤 5: 服务小区合并解包后, 当 CB级信息合并解析 TB结果正确时, 如果没有发送 ACK给 UE, 则发送 ACK给 UE; 当不正确时, 则发送 NAK 给 UE; 完成本次解包过程。
表 4服务小区合并解析后按需发送合并结果给 UE
Figure imgf000024_0001
服务小区 TB解对 无 无 无 服务小区 TB解错, 有 1、处理接收到的数据包——解对的 CB2, 无 无 多个协作小区 TB解对 用该数据包代替本小区解包过程中解错
的 CB2, 完成解 TB, 结果应该是正确的;
2、 结束本次操作
服务小区 TB解错, 有 1、处理接收到的数据包——解对的 CB2, 无 无 一个协作小区 TB解对, 用该数据包代替本小区解包过程中解错
服务小区 CB部分解对 的 CB2, 完成解 TB, 结果应该是正确的;
2、 结束本次操作
服务小区 TB解错, 有 1、 处理接收到的数据包——解对的 TB; 无 无 一个协作小区 TB解对, 2、 结束本次操作
服务小区 CB全部解错
所有小区 TB解错, CB 1、 处理接收到的数据包——解对的 CB1 无 无 部分解对 (一) 和解对的 CB2,用该数据包代替本小区解
包过程中解错的 CB1和 CB2,完成解 TB,
结果应该是正确的;
2、 发送 TB解包结果到 UE00;
3、 结束本次操作
所有小区 TB解错, CB 1、 处理接收到的数据包——解对的 CB1 无 无 部分解对 (二) ( 1个) 和解错的 CB2 (2个) , 用解对
的 CB1 代替本小区解包过程中解错的
CB1 ,用收到的两个解错的 CB2与本小区
解错的 CB2进行合并, 再解 TB;
2、 发送 TB解包结果到 UE00;
3、 结束本次操作
应用示例二: 较小 TB的应用场景一
本发明的实施例对较小 TB的场景也同样适用, 较小 TB是指在做 bit级 处理时, TB不分为多个 CB, 而所有的处理过程可以与实施例 1的一致, 因 为没有 CB的处理, 因此可以退化为典型的 TB解包过程实现。
该示例的具体步骤描述如下:
步骤 1 : 所有在协作集内的小区收到 UE的数据后, 进行独立解包, 保存 TB解包结果。
步骤 2: 在协作集的小区中交互各自的独立解包结果; 如果满足条件, 服务小区同时发送应答消息给 UE。
服务小区: 如果 TB解包正确, 发送 ACK ( ACKnowledge肯定应答)给 所有协作小区; 同时发送 ACK给 UE, 不需要执行后续步骤, 完成本次接收 过程;
如果 TB解包错误, 发送 NAK ( Non-ACKnowledge 否定应答)给所有协 作小区。
协作小区: 如果 TB解包正确, 发送 ACK给所有协作集内的小区; 如果 TB解包错误, 发送 NAK给所有协作集内的小区。
步骤 3: 协作集的小区收到解包结果后进行分析, 并按需交互数据。 服务小区 (自己解 TB 包错误) : 如果收到协作小区的 TB解包结果有 ACK, 则发送 ACK给 UE, 不需要执行后续步骤, 完成本次接收过程;
如果收到协作小区的 TB解包结果没有 ACK, 等待其他协作小区发送数 据包给自己。
协作小区:如果收到服务小区的 ACK消息,表明服务小区解 TB包正确, 则不需要交互数据, 本次接收过程已经完成;
如果自己解 TB 包正确, 并且协作集内只有自己解对时, 直接发送已解 对的 TB给服务小区;
如果自己解 TB 包正确, 并且协作集内还有其他小区也解对, 利用判决 算法判断哪一个解对的小区发送正确的信息给服务小区; 如果判断结果是自 己, 直接发送已解对的 TB给服务小区;
如果自己解 TB包错误, 并且协作集内有小区解对 TB时, 则不需要发送 数据包, 本小区已经完成了此次接收过程;
如果自己解 TB包错误, 并且协作集内没有小区解对 TB时, 则发送软比 特信息或者 IQ釆样数据给服务小区。
步骤 4: 服务小区收到协作小区发送的数据包, 合并解析。
服务小区 (自己解 TB 包错误)处理协作小区发的数据包: 如果收到的 是解对的 TB包, 则直接将自己解错的 TB包替换为正确的; 如果收到的是软 比特信息或者 IQ釆样数据, 则做相应级别的信息合并, 并最终完成 TB级信 息的解析。
步骤 5: 服务小区合并解包后, 当解析 TB 结果正确时, 如果没有发送 ACK给 UE, 则发送 ACK给 UE; 当不正确时, 发送 NAK给 UE; 完成本次 解包过程。
综上所述, 本发明实施方式提出了一种针对上行 CoMP协作集交互信息 时的优化方法, 相对于联合处理典型方法中传输 TB级、 CB级、 软 bit级或 者 IQ数据, 该方法只需要传输部分 CB, 并且是服务小区最需要的部分, 减 小了对 X2接口 /空口的压力; 相对于交互软 bit信息和 IQ数据合并, CB是相 对较高层次的信息, 能减轻服务小区的处理负担; 该方法兼容性较好, 大 TB 的场景优势突出, 小 TB的场景也没有引入额外开销。
此外, 本发明实施例中还提供了一种上行协作集内信息交互的系统, 如 图 6所示, 该系统主要包括:
校验结果交互单元 601 ,设置为在上行协作过程中, 与协作 UE的协作集 内的其他小区之间交互校验结果, 其中所述校验结果包括 TB校验结果, 和 / 或 CB校验结果;
协作小区中的协商决策单元 602, 设置为根据交互的所有小区的校验结 果, 获知服务小区解包错误时, 通过分布协商决策出本协作小区是否需要向 所述服务小区发送数据, 以及, 如果需要向所述服务小区发送数据, 则需要 向所述服务小区发送全部数据还是部分数据。
可选地, 所述校验结果交互单元设置为, 按照以下方式交互校验结果: 如果 TB解对, 则交互的校验结果为 ACK;
如果 TB解错, 且 TB未分为多个 CB, 则交互的校验结果为 NAK;
如果 TB解错, 且 TB分为多个 CB时, 则交互的校验结果包括 NAK, 还 包括 CB校验结果。
校验结果, 包括: 传输块(TB )校验结果, 和 /或码块(CB )校验结果。 可选地, 所述协商决策单元设置为, 在本协作小区满足下列条件之一时, 决策不需要向服务小区发送数据:
所述服务小区的 TB校验结果为正确;
或者, 所述服务小区的 TB校验结果为错误, 本协作小区的 TB校验结果 为错误, 且所述协作集内有其他协作小区的 TB校验结果为正确;
而在本协作小区满足下列条件之一时, 决策需要向服务小区发送全部数 据:
TB未分为多个 CB, 所述协作集内服务小区和协作小区的的 TB校验结 果均为错误, 则本协作小区需要向服务小区发送全部数据;
或者, TB分为多个 CB,所述服务小区的 TB和全部 CB校验结果均为错 误, 所述协作集内只有本协作小区的 TB校验结果为正确, 则本协作小区需 要向服务小区发送全部数据;
或者, 所述服务小区的 TB和全部 CB校验结果均为错误, 本协作小区的 TB校验结果为正确, 且所述协作集内有其他协作小区的 TB校验结果为正确 时, 按照统一的判决准则, 决策出本协作小区需要向服务小区发送全部数据; 其中, 所述发送全部数据是指发送 TB级、 或软比特级、 或 IQ釆样级数 据。
可选地, 所述协商决策单元设置为, 在本协作小区满足下列条件之一时, 决策需要向服务小区发送部分数据:
TB分为多个 CB,所述服务小区的 TB和全部 CB校验结果均为错误,且 所述协作集内全部协作小区的 TB校验结果都为错误时; 或者, 所述服务小 区的 TB校验结果为错误且部分 CB校验结果为错误时,则所述协商决策单元 对所述 CB校验结果为错误的一个或多个 CB进行以下判断:
如果所述协作集内只有本协作小区相应的 CB校验结果为正确, 则本协 作小区向所述服务小区发送所述相应的 CB数据;
如果本协作小区相应的 CB校验结果为正确, 所述协作集内有其他协作 小区相应的 CB校验结果也为正确, 按照统一的判决准则, 决策出本协作小 区向所述服务小区发送所述相应的 CB数据, 则本协作小区向所述服务小区 发送所述相应的 CB数据;
如果所述协作集内所有协作小区的相应 CB校验结果均为错误, 则本协 作小区向所述服务小区发送所述相应的 CB数据;
其中, 所述发送部分数据是指发送部分 CB数据。
所述系统还包括协作小区中的数据发送单元 603 , 其设置为根据所述协 商决策单元 602的决策向所述服务小区发送数据。
可选地, 所述系统还包括服务小区中的解析处理单元 604:
所述解析处理单元 604设置为, 当所述服务小区 TB解错时, 根据收到 的所述协作小区发送的数据和对应检验结果, 按照以下方式修正同级数据或 者进行信息合并后, 对数据包进行解析:
如果收到的是正确的 TB数据,则用该 TB数据直接替换解错的 TB数据; 如果收到的是 CB数据,且发送该 CB数据的协作小区是解对的,则用该 CB数据对相应 CB数据进行修正后, 用修正后的 CB数据对数据包做进一步 解析;
如果收到的是 CB数据,且发送该 CB数据的协作小区是解错的,则釆用 CB级合并多个协作小区都解错的相应 CB数据后, 用合并后的 CB信息对数 据包做进一步解析;
如果收到的是软比特级或者 IQ釆样级数据,则将收集到的同级数据进行 合并后, 做进一步解析。
以上仅为本发明的优选实施案例而已, 并不用于限制本发明, 本发明还 可有其他多种实施例, 在不背离本发明精神及其实质的情况下, 熟悉本领域 的改变和变形都应属于本发明所附的权利要求的保护范围。
显然, 本领域的技术人员应该明白, 上述的实施方式中的各模块或各步 骤可以用通用的计算装置来实现, 它们可以集内在单个的计算装置上, 或者 分布在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行 的程序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 并且在某些情况下, 可以以不同于此处的顺序执行所示出或描述的步骤, 或 者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样, 本发明实施方式不限制于任何特定的 硬件和软件结合。
工业实用性
上述技术方案相对于联合处理典型方法中传输 TB级、 CB级、 软 bit级 或者 IQ数据, 按需选择传输 TB或者仅传输部分 CB, 保证开销最小的情况 下, 传输服务小区最需要的部分, 减小了对 X2接口 /空口的压力, 提高了数 据传输效率;相对于交互软 bit信息和 IQ数据合并, CB是相对较高层次的信 息, 能减轻服务小区的处理负担; 另外, 该方法兼容性较好, 对大 TB 的场 景优势突出, 对小 TB的场景也没有引入额外开销。

Claims

权 利 要 求 书
1、 一种上行协作集内信息交互的方法, 包括:
在上行协作过程中, 协作用户设备(UE )的协作集内的所有小区之间交 互校验结果;
所述协作集内的各协作小区根据交互的所有小区的校验结果, 获知服务 小区解包错误时, 通过分布协商决策出本协作小区是否需要向所述服务小区 发送数据, 以及, 如果需要向所述服务小区发送数据, 则需要向所述服务小 区发送全部数据还是部分数据。
2、 如权利要求 1所述的方法, 其中,
所述通过分布协商决策出本协作小区是否需要向所述服务小区发送数 据, 以及, 如果需要向所述服务小区发送数据, 则需要向所述服务小区发送 全部数据还是部分数据的步骤包括:
判断所述本协作小区是否满足所述分布协商中关于不需要向服务小区发 送数据的条件, 如果是, 决策所述本协作小区不需要向服务小区发送数据; 如果否, 决策所述本协作小区需要向服务小区发送数据;
以及,
当决策所述本协作小区需要向服务小区发送数据时:
当所述本协作小区满足所述分布协商中关于需要向所述服务小区发送全 部数据的条件时, 决策所述本协作小区需要向服务小区发送全部数据;
当所述本协作小区满足所述分布协商中关于需要向所述服务小区发送部 分数据的条件时, 决策所述本协作小区需要向服务小区发送部分数据。
3、 如权利要求 1所述的方法, 其中,
所述校验包括传输块(TB )校验和 /或码块(CB )校验。
4、 如权利要求 3所述的方法, 其中,
所述校验结果是指:
如果所述 TB解对, 即 TB校验结果为正确, 则所述校验结果为肯定应答 ( ACK ) ; 如果所述 TB解错, 即 TB校验结果为错误, 当所述 TB未分为多个 CB, 则所述校验结果为否定应答( NAK ) ;
如果所述 TB解错, 即 TB校验结果为错误, 当所述 TB分为多个 CB时, 则所述校验结果包括 NAK, 以及所述 CB校验结果。
5、 如权利要求 4所述的方法, 其中, 所述分布协商包括:
所述协作小区满足下列条件之一时, 不需要向服务小区发送数据: 所述服务小区的 TB校验结果为正确;
所述服务小区的 TB校验结果为错误,本协作小区的 TB校验结果为错误, 且所述协作集内有其他协作小区的 TB校验结果为正确。
6、 如权利要求 4所述的方法, 其中, 所述分布协商包括:
所述协作小区满足下列条件之一时, 需要向服务小区发送全部数据: 所述 TB没有分为多个 CB, 所述协作集内服务小区和协作小区的 TB校 验结果均为错误, 则本协作小区需要向服务小区发送全部数据;
所述 TB分为多个 CB, 所述服务小区的 TB和全部 CB校验结果均为错 误, 所述协作集内只有本协作小区的 TB校验结果为正确, 则本协作小区需 要向服务小区发送全部数据;
所述 TB分为多个 CB, 所述服务小区的 TB和全部 CB校验结果均为错 误, 本协作小区的 TB校验结果为正确, 且所述协作集内有其他协作小区的 TB校验结果为正确时, 按照统一的判决准则, 决策出本协作小区需要向服务 小区发送全部数据;
其中, 所述发送全部数据是指发送 TB级、 或软比特级、 或 IQ釆样级数 据。
7、 如权利要求 6所述的方法, 其中, 所述分布协商包括:
所述协作小区满足下列条件之一时, 需要向服务小区发送部分数据: 所述 TB分为多个 CB, 所述服务小区的 TB和全部 CB校验结果均为错 误, 且所述协作集内全部协作小区的 TB校验结果都为错误时; 或者, 所述 服务小区的 TB校验结果为错误且部分 CB校验结果为错误时, 则对所述 CB 校验结果为错误的一个或多个 CB进行以下判断:
如果所述协作集内只有本协作小区相应的 CB校验结果为正确, 则本协 作小区向所述服务小区发送与 CB校验结果为正确的 CB对应的 CB数据; 如果本协作小区相应的 CB校验结果为正确, 所述协作集内有其他协作 小区相应的 CB校验结果也为正确, 按照统一的判决准则, 决策出本协作小 区向所述服务小区发送与 CB校验结果为正确的 CB对应的 CB数据,则本协 作小区向所述服务小区发送与 CB校验结果为正确的 CB对应的 CB数据; 如果所述协作集内所有协作小区的相应 CB校验结果均为错误, 则本协 作小区向所述服务小区发送与 CB校验结果为错误的 CB对应的 CB数据; 其中, 所述发送部分数据是指发送部分 CB数据。
8、 如权利要求 5、 6或 7所述的方法, 其还包括:
所述服务小区在所述 TB解错时, 根据收到的所述协作小区发送的数据 和对应检验结果, 按照以下方式修正同级数据或者进行信息合并后, 对数据 包进行解析:
如果收到的是正确的 TB数据,则用该 TB数据直接替换解错的 TB数据; 如果收到的是 CB数据,且发送该 CB数据的协作小区是解对的,则用该 CB数据对相应 CB数据进行修正后, 用修正后的 CB数据对数据包做进一步 解析;
如果收到的是 CB数据,且发送该 CB数据的协作小区是解错的,则釆用 CB级合并多个协作小区都解错的相应 CB数据后, 用合并后的 CB信息对数 据包做进一步解析;
如果收到的是软比特级或者 IQ釆样级数据,则将收集到的同级数据进行 合并后, 做进一步解析。
9、 一种上行协作集内信息交互的系统, 包括:
校验结果交互单元, 设置为在上行协作过程中, 与协作 UE的协作集内 所述校验结果交互单元所在小区之外的小区之间交互校验结果, 所述校验包 括传输块(TB )校验, 和 /或码块(CB )校验; 协作小区中的协商决策单元, 设置为根据交互的所有小区的校验结果, 获知服务小区解包错误时, 通过分布协商决策出本协作小区是否需要向所述 服务小区发送数据, 以及, 如果需要向所述服务小区发送数据, 则需要向所 述服务小区发送全部数据还是部分数据。
10、 如权利要求 9所述的系统, 其中,
所述协商决策单元是设置为:
判断所述本协作小区是否满足所述分布协商中关于不需要向服务小区发 送数据的条件, 如果是, 决策所述本协作小区不需要向服务小区发送数据; 如果否, 决策所述本协作小区需要向服务小区发送数据;
以及,
当决策所述本协作小区需要向服务小区发送数据时:
当所述本协作小区满足所述分布协商中关于需要向所述服务小区发送全 部数据的条件时, 决策所述本协作小区需要向服务小区发送全部数据;
当所述本协作小区满足所述分布协商中关于需要向所述服务小区发送部 分数据的条件时, 决策所述本协作小区需要向服务小区发送部分数据。
11、 如权利要求 9所述的系统, 其中,
所述校验结果交互单元设置为, 按照以下方式交互校验结果:
如果所述 TB解对, 即 TB校验结果为正确, 则交互的校验结果为肯定应 答( ACK ) ;
如果所述 TB解错, 即 TB校验结果为错误, 当所述 TB未分为多个否定 应答(CB ) , 则交互的校验结果为否定应答(NAK ) ;
如果所述 TB解错, 即 TB校验结果为错误, 当所述 TB分为多个 CB时, 则交互的校验结果包括 NAK, 还包括 CB校验结果。
12、 如权利要求 11所述的系统, 其中,
所述协商决策单元设置为, 在本协作小区满足下列条件之一时, 决策不 需要向服务小区发送数据: 所述服务小区的 TB校验结果为正确;
所述服务小区的 TB校验结果为错误,本协作小区的 TB校验结果为错误, 且所述协作集内有其他协作小区的 TB校验结果为正确;
而在本协作小区满足下列条件之一时, 决策需要向服务小区发送全部数 据:
所述 TB未分为多个 CB, 所述协作集内服务小区和协作小区的的 TB校 验结果均为错误, 则本协作小区需要向服务小区发送全部数据;
TB分为多个 CB,所述服务小区的 TB和全部 CB校验结果均为错误,所 述协作集内只有本协作小区的 TB校验结果为正确, 则本协作小区需要向服 务小区发送全部数据;
所述服务小区的 TB和全部 CB校验结果均为错误, 本协作小区的 TB校 验结果为正确, 且所述协作集内有其他协作小区的 TB校验结果为正确时, 按照统一的判决准则, 决策出本协作小区需要向服务小区发送全部数据; 其中, 所述发送全部数据是指发送 TB级、 或软比特级、 或 IQ釆样级数 据。
13、 如权利要求 11所述的系统, 其中,
所述协商决策单元设置为, 在本协作小区满足下列条件之一时, 决策需 要向服务小区发送部分数据:
所述 TB分为多个 CB, 所述服务小区的 TB和全部 CB校验结果均为错 误, 且所述协作集内全部协作小区的 TB校验结果都为错误时; 或者, 所述 服务小区的 TB校验结果为错误且部分 CB校验结果为错误时,则所述协商决 策单元对所述 CB校验结果为错误的一个或多个 CB进行以下判断:
如果所述协作集内只有本协作小区相应的 CB校验结果为正确, 则本协 作小区向所述服务小区发送与 CB校验结果为正确的 CB对应的 CB数据; 如果本协作小区相应的 CB校验结果为正确, 所述协作集内有其他协作 小区相应的 CB校验结果也为正确, 按照统一的判决准则, 决策出本协作小 区向所述服务小区发送与 CB校验结果为正确的 CB对应的 CB数据,则本协 作小区向所述服务小区发送与 CB校验结果为正确的 CB对应的 CB数据; 如果所述协作集内所有协作小区的相应 CB校验结果均为错误, 则本协 作小区向所述服务小区发送与 CB校验结果为正确的 CB对应的 CB数据; 其中, 所述发送部分数据是指发送部分 CB数据。
14、 如权利要求 12或 13所述的系统, 其还包括服务小区中的解析处理 单元:
所述解析处理单元设置为, 当所述服务小区 TB解错时, 根据收到的所 述协作小区发送的数据和对应检验结果, 按照以下方式修正同级数据或者进 行信息合并后, 对数据包进行解析:
如果收到的是正确的 TB数据,则用该 TB数据直接替换解错的 TB数据; 如果收到的是 CB数据,且发送该 CB数据的协作小区是解对的,则用该
CB数据对相应 CB数据进行修正后, 用修正后的 CB数据对数据包做进一步 解析;
如果收到的是 CB数据,且发送该 CB数据的协作小区是解错的,则釆用 CB级合并多个协作小区都解错的相应 CB数据后, 用合并后的 CB信息对数 据包做进一步解析;
如果收到的是软比特级或者 IQ釆样级数据,则将收集到的同级数据进行 合并后, 做进一步解析。
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