WO2014094469A1 - 实现协同多点传输的方法、主基站、系统及其工作方法 - Google Patents

实现协同多点传输的方法、主基站、系统及其工作方法 Download PDF

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Publication number
WO2014094469A1
WO2014094469A1 PCT/CN2013/083651 CN2013083651W WO2014094469A1 WO 2014094469 A1 WO2014094469 A1 WO 2014094469A1 CN 2013083651 W CN2013083651 W CN 2013083651W WO 2014094469 A1 WO2014094469 A1 WO 2014094469A1
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WIPO (PCT)
Prior art keywords
uplink service
base station
service information
module
scheduling
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PCT/CN2013/083651
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English (en)
French (fr)
Inventor
雷超琴
刘巧艳
耿鹏
毛凯
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中兴通讯股份有限公司
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Publication of WO2014094469A1 publication Critical patent/WO2014094469A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-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 wireless communications, and in particular, to a method, a primary base station, a system, and a working method thereof for implementing coordinated multipoint transmission.
  • CoMP Coordinated Multiple Points
  • the plurality of transmission points may be a base station having a complete resource management module, a baseband processing module, and a radio frequency unit, or a plurality of radio frequency units and antennas (such as distributed antennas) having different geographical locations, or a relay node.
  • CoMP can increase the coverage of high-speed data rates, increase the throughput at the cell edge, and increase the throughput of the system.
  • Uplink CoMP includes joint reception and cooperative scheduling (or cooperative beamforming): Joint reception means that the PUSCH (Physical Uplink Shared Channel) transmitted by the UE (User Equipment) is more in order to improve the quality of the received signal. The points are jointly received at the same time; cooperative scheduling (or cooperative beamforming) means that the scheduling and precoding selection decisions of the user are jointly determined by the cells in the CoMP cooperation set.
  • Joint reception means that the PUSCH (Physical Uplink Shared Channel) transmitted by the UE (User Equipment) is more in order to improve the quality of the received signal.
  • the points are jointly received at the same time
  • cooperative scheduling or cooperative beamforming means that the scheduling and precoding selection decisions of the user are jointly determined by the cells in the CoMP cooperation set.
  • the uplink CoMP is divided into CoMP in the station and CoMP in the station.
  • CoMP in the station refers to cooperation between different cells belonging to the same base station, so the implementation of CoMP in the station may not consider the delay.
  • Inter-station CoMP refers to cooperation between cells belonging to different base stations. Since the delay between transmissions between base stations is relatively large, in uplink joint reception, if multiple base stations jointly process, it is likely that the base station needs to respond to the uplink service.
  • ACK Acknowledgement
  • I NACK Negative Acknowledgement
  • the main technical problem to be solved by the present invention is to provide a method for implementing coordinated multi-point transmission, a primary base station, a system and a working method thereof, which can be implemented within a certain inter-station delay, so that CoMP can be implemented between uplink base stations, and the cell is improved.
  • the throughput of the edge is to provide a method for implementing coordinated multi-point transmission, a primary base station, a system and a working method thereof, which can be implemented within a certain inter-station delay, so that CoMP can be implemented between uplink base stations, and the cell is improved.
  • the throughput of the edge is to provide a method for implementing coordinated multi-point transmission, a primary base station, a system and a working method thereof, which can be implemented within a certain inter-station delay, so that CoMP can be implemented between uplink base stations, and the cell is improved.
  • the present invention provides a base station working method for implementing coordinated multipoint transmission, including:
  • the primary base station receives and processes the uplink service information sent by the user;
  • the primary base station receives the processing result of the uplink service information by the coordinated base station, and performs joint processing on the coordinated base station and its own uplink service information processing result;
  • the primary base station Before the primary base station sends a response to the uplink service information, it is determined whether the correctness of the current reception can be determined according to the result of the joint processing. If not, the correctness of the current reception is determined according to the processing result of the current base station.
  • the process of determining the correctness of the current reception according to the processing result of the self includes: determining whether the current reception is correct according to the processing result of the self, and if yes, sending an ACK to the uplink service information.
  • the process of determining the correctness of the current reception according to the processing result of the self includes: determining whether the current reception is correct according to the processing result of the self, and if not, issuing a temporary ACK to the uplink service information;
  • the method for implementing the coordinated multi-point transmission by the base station further includes:
  • the primary base station waits or jointly processes the processing result of the cooperative base station
  • the primary base station determines again whether the correctness of the current reception can be determined according to the result of the joint processing before scheduling the next uplink service information of the uplink service process, and if not, the next uplink service information of the uplink service process.
  • the scheduled user re-uploads the last uplink Business information.
  • the primary base station when the primary base station can determine the correctness of the current reception according to the result of the joint processing before the scheduling of the uplink service information by the uplink service process, the primary base station further includes:
  • the primary base station determines whether the current reception is correct. If it is correct, the scheduling user uploads new uplink service information at the scheduling moment of the next uplink service information of the uplink service process, and if not, under the uplink service process. At the scheduling moment of the uplink service information, the scheduling user re-uploads the last uplink service information.
  • the present invention further provides a primary base station for implementing coordinated multipoint transmission, including: a service scheduling module, a service processing module, a joint processing module, a first determining module, and an information confirming module;
  • the service processing module is configured to: receive and process uplink service information of the uplink service process sent by the user, where the uplink service is scheduled and the process of the uplink service is confirmed;
  • the joint processing module is configured to: receive a processing result of the uplink service information by the coordinated base station, and perform joint processing on the processing result of the coordinated base station and the uplink service information of the service module;
  • the first determining module is configured to: determine whether the home base station of the user can determine the correctness of the current receiving according to the result of the joint processing before sending the response to the uplink service information, and if not, notify the information
  • the confirmation module determines the correctness of the current reception according to the processing result of the service module.
  • the information confirmation module includes: a second determination module and a delivery module;
  • the second judging module is configured to: determine whether the current receiving is correct according to the processing result of the self, and if yes, notify the sending module to send an ACK to the uplink service information.
  • the second determining module is further configured to: determine whether the current receiving is correct according to the processing result of the self, and if not, notify the sending module to send a temporary ACK to the uplink service information;
  • the module is further configured to: wait for or jointly process the processing result of the coordinated base station after the temporary ACK is sent, where the first determining module is further configured to: schedule the uplink service process Before the next uplink service information, it is determined again whether the correctness of the current reception can be judged according to the result of the joint processing. If not, the scheduling module is notified to schedule the user at the scheduling moment of the next uplink service information of the uplink service process. Re-upload the last uplink service information.
  • the method further includes: a third determining module; the third determining module is configured to: determine whether the current receiving is correct when determining the correctness of the current receiving according to the result of the joint processing before scheduling the next uplink service information, If yes, the service scheduling module is configured to schedule a user to upload new uplink service information at a scheduling moment of the next uplink service information of the uplink service process, and if not, notify the scheduling module of the uplink service process. At the scheduling moment of the next uplink service information, the scheduling user re-uploads the last uplink service information.
  • a third determining module is configured to: determine whether the current receiving is correct when determining the correctness of the current receiving according to the result of the joint processing before scheduling the next uplink service information, If yes, the service scheduling module is configured to schedule a user to upload new uplink service information at a scheduling moment of the next uplink service information of the uplink service process, and if not, notify the scheduling module of the uplink service process. At the scheduling moment of the next uplink service information, the scheduling user
  • the present invention further provides a system for implementing coordinated multipoint transmission, comprising: a primary base station and at least one cooperative base station as described above; the primary base station and the cooperative base station jointly receive an uplink service information.
  • the present invention also provides a system working method for implementing coordinated multipoint transmission, including:
  • the primary base station receives and processes the uplink service information sent by the user;
  • the cooperative base station receives and processes the uplink service information sent by the user, and sends the processing result of the uplink service information to the primary base station;
  • the primary base station performs joint processing on the result of processing the uplink service information of the cooperative base station and the self; the primary base station determines whether the correctness of the current reception can be determined according to the result of the joint processing before sending the response to the uplink service information, If not, the correctness of the reception is determined according to the processing result of the self.
  • the embodiment of the invention provides a method for implementing coordinated multi-point transmission, a primary base station, a system and a working method thereof, which can be implemented within a certain inter-station delay range, so that CoMP between base stations can be implemented, and the quality of the received signal is improved;
  • the working method of coordinated multi-point transmission includes: And the primary base station receives the processing result of the uplink service information by the coordinated base station, and performs joint processing on the uplink service information processing result of the coordinated base station; the primary base station is in the uplink Before the service information is sent to the response, it is determined whether the correctness of the current reception can be determined according to the result of the joint processing.
  • the correctness of the current reception is determined according to the processing result of the current processing;
  • the inter-station delay cannot determine the correctness of the current reception according to the result of the joint processing, and the self-processing result is used to confirm that the current uplink service information is correctly received.
  • Sexuality achieve CoMP between uplink base stations, improve the throughput of the cell edge, and also improve the throughput of the system.
  • FIG. 1 is a flowchart of a method for implementing coordinated multi-point transmission according to an embodiment of the present invention
  • FIG. 2 is another flowchart of a method for implementing coordinated multi-point transmission according to an embodiment of the present invention
  • 2 is a schematic structural diagram of a primary base station for implementing coordinated multi-point transmission
  • FIG. 4 is another schematic structural diagram of a primary base station for implementing coordinated multi-point transmission according to Embodiment 2 of the present invention
  • FIG. 5 is a second embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a system for implementing coordinated multipoint transmission according to Embodiment 2 of the present invention
  • FIG. 7 is a flowchart of a method for implementing coordinated multipoint transmission according to Embodiment 3 of the present invention; .
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the method for implementing coordinated multipoint transmission in the embodiment of the present embodiment includes:
  • Step 100 The primary base station schedules the uplink service of the user and confirms the uplink service process.
  • Step 101 The primary base station receives and processes uplink service information of the uplink service process sent by the user.
  • Step 102 The primary base station receives the processing result of the uplink service information by the coordinated base station, and performs joint processing on the coordinated base station and its own uplink service information processing result.
  • Step 103 Before the primary base station sends a response to the uplink service information, it is determined whether the correctness of the current reception can be determined according to the result of the joint processing. If the step 104 is performed, if not, step 107 is performed;
  • Step 104 Determine whether the current reception is correct according to the result of the joint processing, if step 105 is performed correctly, if not, proceed to step 106;
  • Step 105 The ACK is sent to the current uplink service information, and the inter-base station CoMP process ends.
  • Step 106 The NACK is sent to the current uplink service information, and the inter-base station CoMP process ends.
  • Step 107 Determine the correctness of the current reception according to the processing result of the self.
  • each uplink service corresponds to a scheduling process, and when the uplink service scheduling takes effect, the process also occurs.
  • the base station In a cell of a different base station, since the delay between transmissions between base stations is relatively large, in uplink joint reception, if multiple base stations jointly process, it is likely that the base station needs to respond to the uplink service, that is, ACK (Acknowledgement) / NACK is sent. (Negative Acknowledgement), the cooperation information between the stations has not been received, or has not been processed yet, which will cause the CoMP between the uplink base stations not to be realized.
  • the correctness of the uplink service is determined by using the processing result of the self-base station to realize the CoMP between the uplink base stations, and the fluency of the coordinated multi-point transmission and the stability of the data transmission are improved.
  • the primary base station in this embodiment refers to the home base station of the user; the cooperative base station refers to the base station that assists the home base station of the user to perform joint reception processing.
  • the process of determining the correctness of the current reception according to the processing result of the foregoing step 107 includes: determining whether the current reception is correct according to the processing result of the self, and if yes, sending an ACK to the uplink service information, and if not, A temporary ACK is sent to the uplink service information.
  • the base station working method for implementing coordinated multi-point transmission in this embodiment is based on the base station itself. If the result of the line service information processing determines the correctness of the current receiving service, if a temporary ACK is sent if the judgment is incorrect, the current receiving service is correct by default, so that the current service process continues to implement CoMP between the base stations. When the UE receives the temporary ACk at the specified time, the UE, by default, the primary base station has confirmed that the current reception is correct, and the UE does not perform any action of retransmitting the service information.
  • the method for implementing coordinated multi-point transmission in this embodiment further includes: after the primary base station sends a temporary ACK to the uplink service information:
  • the method for implementing the coordinated multi-point transmission by the base station further includes:
  • the primary base station waits or jointly processes the processing result of the cooperative base station
  • the primary base station determines again whether the correctness of the current reception can be determined according to the result of the joint processing before scheduling the next uplink service information of the uplink service process, and if not, the next uplink service information of the uplink service process.
  • the scheduling user re-uploads the last uplink service information.
  • the uplink service information received this time and the next uplink service information belong to the same service process.
  • the base station works again to determine the correctness of the current reception according to the result of the joint processing.
  • the base station working method for implementing the coordinated multi-point transmission in this embodiment uses the next uplink service. At the scheduling moment of the information, the manner in which the user re-uploads the last uplink service information is scheduled.
  • the base station method of the embodiment further includes:
  • the primary base station determines whether the current reception is correct. If it is correct, the next uplink service information is adjusted. At the time of the scheduling, the user is scheduled to upload new uplink service information. If not, the user is scheduled to re-upload the last uplink service information at the scheduling time of the next uplink service information.
  • the working method of the base station that implements coordinated multi-point transmission in this embodiment specifically includes the following steps:
  • Step 200 The primary base station schedules the uplink service of the user and confirms the uplink service process.
  • Step 201 The primary base station receives and processes the uplink service information of the uplink service process sent by the user.
  • Step 202 The primary base station receives the processing result of the uplink service information by the coordinated base station, and performs joint processing on the coordinated base station and its own uplink service information processing result.
  • Step 203 Before the primary base station sends a response to the uplink service information, it is determined whether the correctness of the current reception can be determined according to the result of the joint processing. If the step 204 is performed, if not, step 207 is performed;
  • Step 204 The primary base station determines, according to the result of the joint processing, whether the current reception is correct. If step 205 is performed correctly, if not, step 206 is performed;
  • Step 205 The primary base station sends an ACK to the current uplink service information, and the current CoMP process between the base stations ends.
  • Step 206 The primary base station sends a NACK to the current uplink service information, and the current inter-base station CoMP process ends.
  • Step 207 The primary base station determines whether the current reception is correct according to its own processing result. If yes, go to step 208. If no, go to step 209.
  • Step 208 The primary base station sends an ACK to the uplink service information.
  • Step 209 The primary base station sends a temporary ACK to the uplink service information.
  • Step 210 The primary base station waits or jointly processes the processing result of the cooperative base station.
  • Step 211 The primary base station determines whether the correctness of the current reception can be determined according to the result of the joint processing before scheduling the next uplink service information of the uplink service process. If yes, step 212 is performed. If not, proceed to step 214;
  • Step 212 The primary base station determines whether the current reception is correct, if yes, step 213 is performed, if not, step 214 is performed;
  • Step 213 The primary base station schedules the user to upload new uplink service information at the scheduling moment of the uplink service information of the next uplink service process.
  • Step 214 The primary base station schedules the user to re-upload the last uplink service information at the scheduling moment of the uplink service information of the next uplink service process.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the embodiment provides a primary base station for implementing coordinated multipoint transmission, including: a service scheduling module, a service processing module, a joint processing module, a first determining module, and an information confirming module; and a service scheduling module is used for scheduling.
  • the uplink service of the user confirms the progress of the uplink service;
  • the service processing module is configured to receive and process the uplink service information of the uplink service process sent by the user;
  • the joint processing module is configured to receive the processing result of the uplink service information by the coordinated base station, and perform a joint processing on the processing result of the coordinated base station and the uplink service information of the service module; the first determining module is configured to send the uplink service information Before the response, it is determined whether the home base station of the user can determine the correctness of the current reception according to the result of the joint processing. If not, the information confirmation module is notified to determine the correctness of the current reception according to the processing result of the service module.
  • the information confirmation module of this embodiment includes: a second judging module and a sending module; the second judging module is configured to determine whether the current receiving is correct according to the processing result of the self, and if yes, notify the sending module And sending an ACK to the uplink service information.
  • the second determining module is further configured to determine, according to the processing result of the current, whether the current receiving is correct, and if not, notifying the sending module to send a temporary ACK to the uplink service information; Also used to wait or join the processing protocol after issuing a temporary ACK
  • the first determining module is further configured to: before determining the next uplink service information of the uplink service process, determine whether the correctness of the current reception can be determined according to the result of the joint processing, and if not, notify the The scheduling module schedules the user to re-upload the last uplink service information at the scheduling moment of the next uplink service information of the uplink service process.
  • the base station that implements coordinated multipoint transmission in this embodiment further includes: a third determining module; and the third determining module is configured to: before scheduling the next uplink service information of the uplink service process, according to The result of the joint processing determines whether the current reception is correct when determining the correctness of the current reception. If yes, the service scheduling module is notified to schedule the user to upload a new uplink at the scheduling moment of the next uplink service information of the uplink service process. The service information, if not, notifies the scheduling module to schedule the user to re-upload the last uplink service information at the scheduling moment of the next uplink service information of the uplink service process.
  • the previous uplink service information and the next service information in this embodiment belong to the same service process.
  • the embodiment further provides a system for implementing coordinated multipoint transmission, including a primary base station and at least one cooperative base station as described in this embodiment; the primary base station and the cooperative base station jointly receive a user Upstream business information.
  • the primary base station implementing the coordinated multi-point transmission in this embodiment can confirm the correctness of the current reception service due to the delay between the primary base station and the cooperative base station, and the current base station can confirm the correctness of the current reception service.
  • the processing result of the uplink service information confirms the correctness of the current reception; when the current reception is incorrect, a temporary ACK is sent to the UE, so that the UE does not perform the retransmission action, and the primary base station continues to wait for the joint processing result, if the last is still not It is possible to confirm the correctness of the current reception according to the result of the joint processing (for example, if the primary base station has not yet completed the joint processing), or to determine that the current reception is incorrect according to the result of the joint processing, the UE is required to re-upload the time.
  • each uplink service corresponds to a process.
  • the process specifies the time when the primary base station performs an action. When the time arrives at the primary base station, the corresponding action is performed. When a process ends, the uplink service information is successfully uploaded or failure.
  • the embodiment provides a system working method for implementing coordinated multi-point transmission, including: receiving, by the primary base station, the uplink service information sent by the user;
  • the cooperative base station receives and processes the uplink service information sent by the user, and sends the processing result of the uplink service information to the primary base station;
  • the primary base station performs joint processing on the coordinated base station and its own uplink service information processing result; the primary base station determines whether the correctness of the current reception can be determined according to the result of the joint processing before sending the response to the uplink service information, if not, The correctness of this reception is determined according to the processing result of itself.
  • the method for implementing coordinated multi-point transmission between base stations in an LTE FDD system includes:
  • Step 701 The primary base station schedules the uplink service of the user in the nth subframe and confirms the uplink service process.
  • Step 702 The primary base station and the coordinated base station receive and process the uplink service information of the uplink service process sent by the user in the n+4th subframe.
  • Step 703 The cooperative base station transmits the processing result of the cooperative base station to the primary base station, and performs joint processing by the primary base station.
  • Step 704 The primary base station determines that the correctness of the current reception may be determined according to the result of the joint processing before the ACK/NACK is sent in the n+8th subframe. If the primary base station sends an ACK/NACK in the n+8th subframe, If the correctness of the current reception is determined according to the result of the joint processing, step 705 is performed, otherwise step 706 is performed;
  • Step 705 The primary base station determines whether the current reception is correct according to the result of the joint processing. If the current reception is correct, step 707 is performed, otherwise step 708 is performed; Step 706: The primary base station determines, according to its own processing result, whether the current reception is correct, if step 707 is performed correctly, otherwise step 709 is performed;
  • Step 707 Send an ACK in n+8 subframes, and the inter-site CoMP process ends.
  • Step 708 Sending a NACK in the n+8 subframes, the inter-station CoMP process ends in step 709: After sending an ACK in n+8 subframes, a temporary ACK is sent, and step 710 is performed; Step 710: The primary base station continues to wait Or jointly processing the processing result of the cooperative base station
  • Step 711 Determine whether the correctness of the current reception can be determined according to the result of the joint processing before the next base station of the n+16th subframe scheduling the next uplink service process, if the primary base station is in the n+16th subframe. Before scheduling the next service information, the correctness of the current reception may be determined according to the result of the joint processing, and then step 712 is performed; otherwise, step 713 is performed;
  • Step 712 The primary base station determines whether the current reception is correct. If the current reception is correct, the steps are executed.
  • step 713 is performed.
  • Step 713 In the n+16th subframe, the scheduling user re-uploads the previous service, that is, does not flip, and the CoMP process ends.
  • Step 714 The user is scheduled to start a new service upload in the n+16th subframe, that is, the NDI in the DCI delivered by the user is reversed, and the current CoMP process ends.
  • One subframe in this embodiment is 1 millisecond.
  • the primary base station in this embodiment refers to the home base station of the user; the cooperative base station refers to the base station that assists the user's home base station to perform joint reception.
  • the method for implementing coordinated multi-point transmission in this embodiment can effectively utilize the processing result of the cooperative base station within a certain inter-station delay range, so that the CoMP between the uplink base stations can be effectively implemented, thereby improving the uplink service performance of the entire network. Improve throughput at the cell edge while increasing system throughput.
  • the inter-station delay cannot determine the correctness of the current reception according to the result of the joint processing, and uses its own processing. As a result, the correctness of the received uplink service information is confirmed, the CoMP between the uplink base stations is realized, the throughput at the cell edge is improved, and the throughput of the system can also be improved.

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Abstract

一种实现协同多点传输的方法、主基站、系统及其工作方法，其中实现协同多点传输的工作方法包括：主基站接收并处理用户发送的上行业务信息；主基站接收协作基站对所述上行业务信息的处理结果，并对协作基站和自身的上行业务信息处理结果做联合处理；主基站在对上行业务信息下发应答之前判断是否能根据联合处理的结果判断本次接收的正确性，若不能，则根据自身的处理结果确定本次接收的正确性。本发明实施例实现协同多点传输的方法能够在一定的站间时延范围内，使得基站间CoMP可以实现，提高小区边缘的吞吐量，同时可以提高系统的吞吐量。

Description

实现协同多点传输的方法、 主基站、 系统及其工作方法
技术领域
本发明涉及无线通信领域， 尤其涉及一种实现协同多点传输的方法、 主 基站、 系统及其工作方法。
背景技术
在 LTE ( Long Term Evolution, 长期演进）系统中， CoMP ( Coordinated Multiple Points , 协同多点传输）是一种多点联合发送与接收的技术， 即指 多个地理位置相互独立分散的传输点通过不同的协作方式 (如联合传输、联合 处理、 协作调度等)为多个用户服务。 其中， 多个传输点可以是具有完整资源 管理模块、 基带处理模块和射频单元的基站， 或者是地理位置互异的多个射 频单元及天线 (如分布式天线）， 或者是中继节点。 CoMP 可以提高高速数据 率的覆盖范围， 提高小区边缘的吞吐量， 同时可以提高系统的吞吐量。 上行 CoMP包含联合接收和协作调度（或者协作波束赋形） ： 联合接收是指为了 提高接收信号的质量， UE ( User Equipment, 用户）传输的 PUSCH ( Physical Uplink Shared Channel, 物理上行共享信道）在多个点同时被联合接收 ； 协 作调度（或者协作波束赋形）是指用户的调度和预编码选择决定是由 CoMP 协作集中的小区之间共同决定的。
从实现场景的角度， 上行 CoMP分为站内的 CoMP和站间的 CoMP, 站 内 CoMP是指由属于同一个基站的不同小区间进行协作， 因此站内 CoMP的 实现可以不考虑时延的问题。 站间 CoMP是指由属于不同基站的小区间进行 协作， 由于基站之间传输的时延比较大， 在上行联合接收中， 如果多个基站 联合处理， 很可能在基站需要对上行业务做应答即下发 ACK ( Acknowledgement ) I NACK ( Negative Acknowledgement )时 , 站间的协作 信息还没有收到， 或者还没有来得及处理， 导致在一定的站间时延范围内， 上行 CoMP无法实现， 降低了小区边缘的吞吐量。
发明内容
本发明要解决的主要技术问题是， 提供一种实现协同多点传输的方法、 主基站、 系统及其工作方法能够在一定的站间时延范围内， 使得上行基站间 CoMP可以实现， 提高小区边缘的吞吐量。
为解决上述技术问题， 本发明提供一种实现协同多点传输的基站工作方 法， 包括：
主基站接收并处理用户发送的上行业务信息；
所述主基站接收协作基站对所述上行业务信息的处理结果， 并对协作基 站和自身的上行业务信息处理结果做联合处理；
所述主基站在对所述上行业务信息下发应答之前判断是否能根据联合处 理的结果判断本次接收的正确性， 若不能， 则根据自身的处理结果确定本次 接收的正确性。
优选地， 所述根据自身的处理结果确定本次接收的正确性的过程包括： 根据自身的处理结果判断本次接收是否正确， 若是， 则对所述上行业务 信息下发 ACK。
优选地， 所述根据自身的处理结果确定本次接收的正确性的过程还包括: 根据自身的处理结果判断本次接收是否正确， 若否， 则对所述上行业务 信息下发临时 ACK;
在主基站对所述上行业务信息下发临时 ACK之后， 所述实现基站协同 多点传输的方法还包括：
主基站等待或者联合处理协作基站的处理结果；
主基站在调度所述上行业务进程的下一个上行业务信息之前再次判断是 否能根据联合处理的结果判断本次接收的正确性， 若不能， 则在所述上行业 务进程的下一个上行业务信息的调度时刻， 调度用户重新上传上一次的上行 业务信息。
优选地， 当主基站在所述上行业务进程的调度下一个上行业务信息之前 能根据联合处理的结果判断本次接收的正确性时还包括：
主基站判断本次接收是否正确， 若正确， 则在所述上行业务进程的下一 个上行业务信息的调度时刻， 调度用户上传新的上行业务信息， 若否， 则在 所述上行业务进程的下一个上行业务信息的调度时刻， 调度用户重新上传上 一次的上行业务信息。
同样为了解决上述的技术问题， 本发明还提供了实现协同多点传输的主 基站， 包括： 业务调度模块、 业务处理模块、 联合处理模块、 第一判断模块 和信息确认模块； 所述业务调度模块设置为：调度用户的上行业务并确认上行业务的进程； 所述业务处理模块设置为： 接收并处理用户发送的所述上行业务进程的 上行业务信息；
所述联合处理模块设置为： 接收协作基站对上行业务信息的处理结果， 并对协作基站和所述业务模块上行业务信息的处理结果做联合处理；
所述第一判断模块设置为： 在对所述上行业务信息下发应答之前判断所 述用户的归属基站是否能根据联合处理的结果判断本次接收的正确性， 若不 能， 则通知所述信息确认模块根据所述业务模块的处理结果确定本次接收的 正确性。
优选地， 所述信息确认模块包括： 第二判断模块和下发模块；
所述第二判断模块设置为：根据自身的处理结果确定本次接收是否正确 , 若是， 则通知所述下发模块对所述上行业务信息下发 ACK。
优选地， 所述第二判断模块还设置为： 根据自身的处理结果判断本次接 收是否正确，若否，则通知所述下发模块对所述上行业务信息下发临时 ACK; 所述联合处理模块还设置为： 在下发临时 ACK之后等待或者联合处理协作 基站的处理结果， 所述第一判断模块还设置为： 在所述上行业务进程的调度 下一个上行业务信息之前再次判断是否能根据联合处理的结果判断本次接收 的正确性， 若不能， 则通知所述调度模块在所述上行业务进程的下一个上行 业务信息的调度时刻， 调度用户重新上传上一次的上行业务信息。
优选地， 还包括： 第三判断模块； 所述第三判断模块设置为： 当在调度 下一个上行业务信息之前能根据联合处理的结果判断本次接收的正确性时判 断本次接收是否正确， 若正确， 则通知所述业务调度模块在所述上行业务进 程的下一个上行业务信息的调度时刻， 调度用户上传新的上行业务信息， 若 否， 则通知所述调度模块在所述上行业务进程的下一个上行业务信息的调度 时刻， 调度用户重新上传上一次的上行业务信息。
同样为了解决上述的技术问题， 本发明还提供了一种实现协同多点传输 的系统， 包括： 如上所述的主基站和至少一个协作基站； 所述主基站与所述 协作基站联合接收上行业务信息。
同样为了解决上述的技术问题， 本发明还提供了一种实现协同多点传输 的系统工作方法， 包括：
主基站接收并处理用户发送的上行业务信息；
协作基站接收并处理用户发送的上行业务信息， 并将对所述上行业务信 息的处理结果发送给所述主基站；
所述主基站对协作基站和自身的上行业务信息处理结果做联合处理； 所述主基站在对所述上行业务信息下发应答之前判断是否能根据联合处 理的结果判断本次接收的正确性， 若不能， 则根据自身的处理结果确定本次 接收的正确性。
本发明实施例的有益效果是：
本发明实施例提供了一种实现协同多点传输的方法、 主基站、 系统及其 工作方法能够在一定的站间时延范围内， 使得基站间 CoMP可以实现， 提高 接收信号的质量； 其中实现协同多点传输的工作方法包括： 主基站接收并处 理用户发送的上行业务信息； 所述主基站接收协作基站对所述上行业务信息 的处理结果， 并对协作基站和自身的上行业务信息处理结果做联合处理； 所 述主基站在对所述上行业务信息下发应答之前判断是否能根据联合处理的 结果判断本次接收的正确性， 若不能， 则根据自身的处理结果确定本次接收 的正确性； 本发明实施例的实现协同多点传输的方法中在对所述上行业务信 息下发应答之前由于站间时延不能根据联合处理的结果判断本次接收的正 确性的情况下， 利用自身的处理结果来确认本次接收上行业务信息的正确性, 实现上行基站间 CoMP, 提高小区边缘的吞吐量， 同时也可以提高系统的吞 吐量。
附图概述
图 1为本发明实施例一实现协同多点传输的方法的一种流程图； 图 2为本发明实施例一实现协同多点传输的方法的另一种流程图； 图 3为本发明实施例二实现协同多点传输的主基站的一种结构示意图； 图 4为本发明实施例二实现协同多点传输的主基站的另一种结构示意图； 图 5为本发明实施例二实现协同多点传输的主基站的又一种结构示意图； 图 6为本发明实施例二实现协同多点传输的系统的结构示意图； 图 7为本发明实施例三实现协同多点传输的方法的一种流程图。
本发明的较佳实施方式
下面通过具体实施方式结合附图对本发明作进一步详细说明。
实施例一：
如图 1所示， 本实施的例实现协同多点传输的方法， 包括：
步骤 100: 主基站调度用户的上行业务并确认上行业务进程；
步骤 101 : 主基站接收并处理用户发送的所述上行业务进程的上行业务 信息； 步骤 102: 主基站接收协作基站对所述上行业务信息的处理结果， 并对 协作基站和自身的上行业务信息处理结果做联合处理；
步骤 103: 主基站在对所述上行业务信息下发应答之前判断是否能根据 联合处理的结果判断本次接收的正确性， 若能执行步骤 104, 若不能， 则执 行步骤 107;
步骤 104: 根据联合处理结果判断本次接收是否正确， 若正确执行步骤 105, 若不正确， 则执行步骤 106;
步骤 105:对本次上行业务信息下发 ACK,本次基站间 CoMP流程结束； 步骤 106: 对本次上行业务信息下发 NACK, 本次基站间 CoMP流程结 束；
步骤 107: 根据自身的处理结果确定本次接收的正确性。
本实施例中每一个上行业务都对应一个调度进程， 上行业务调度生效时, 进程也随之产生。
在不同基站的小区内， 由于基站之间传输的时延比较大， 在上行联合接 收中， 如果多个基站联合处理， 很可能在基站需要对上行业务做应答即下发 ACK ( Acknowledgement ) / NACK ( Negative Acknowledgement )时， 站间的 协作信息还没有收到， 或者还没有来得及处理， 会导致上行基站间 CoMP无 法实现。 本实施实现协同多点传输的基站工作方法中通过利用自身的处理结 果来确定上行业务的正确性实现了上行基站间 CoMP, 提高了协同多点传输 的流畅性， 以及数据传输的稳定性。 本实施例中的主基站是指用户的归属基 站； 协作基站是指协助用户的归属基站进行联合接收处理的基站。
上述步骤 107中根据自身的处理结果确定本次接收的正确性的过程包括: 根据自身的处理结果判断本次接收是否正确， 若是， 则对所述上行业务 信息下发 ACK, 若否， 则对上行业务信息下发临时 ACK。
本实施例的实现协同多点传输的基站工作方法中当根据基站自身对上 行业务信息处理结果判断本次接收业务的正确性时， 若在判断不正确的情况 下发送一个临时 ACK, 默认本次接收业务是正确的， 使本次业务进程继续， 实现基站间 CoMP, 当 UE在规定的时刻接收到临时 ACk时， UE, 默认为主 基站已经确认本次接收的是正确的，UE不进行任何的重传业务信息的动作。
当主基站根据自身的业务信息处理结果判断本次接收的业务是错误的 时候， 可能是由于主基站自身本次的接收信号质量不好等原因造成， 因此还 可以利用协作基站的处理结果进行联合处理做进行进一步的判断， 所以在后 续的处理过程中还需要通过联合处理结果再次判断本次接收业务是否正确。 因此本实施例的实现协同多点传输的方法在主基站对所述上行业务信息下发 临时 ACK之后还包括：
在主基站对所述上行业务信息下发临时 ACK之后， 所述实现基站协同 多点传输的方法还包括：
主基站等待或者联合处理协作基站的处理结果；
主基站在调度所述上行业务进程的下一个上行业务信息之前再次判断 是否能根据联合处理的结果判断本次接收的正确性， 若不能， 则在所述上行 业务进程的下一个上行业务信息的调度时刻， 调度用户重新上传上一次的上 行业务信息。 本次接收的上行业务信息与下一个上行业务信息归属于同一业 务进程。
为了保证本次接收业务的正确性， 在主基站再次判断不能根据联合处理 的结果判断本次接收的正确性的情况， 本实施例的实现协同多点传输的基站 工作方法釆用下一个上行业务信息的调度时刻， 调度用户重新上传上一次的 上行业务信息的方式。
如图 2所示， 当主基站在调度下一个上行业务信息之前能根据联合处理 的结果判断本次接收的正确性时本实施例的基站工方法还包括：
主基站判断本次接收是否正确， 若正确， 则在下一个上行业务信息的调 度时刻， 调度用户上传新的上行业务信息， 若否， 则在下一个上行业务信息 的调度时刻， 调度用户重新上传上一次的上行业务信息。
如图 2所示， 本实施例实现协同多点传输的基站工作方法具体包括如下 步骤：
步骤 200: 主基站调度用户的上行业务并确认上行业务进程；
步骤 201 : 主基站接收并处理用户发送的所述上行业务进程的上行业务 信息；
步骤 202: 主基站接收协作基站对所述上行业务信息的处理结果， 并对 协作基站和自身的上行业务信息处理结果做联合处理；
步骤 203 : 主基站在对所述上行业务信息下发应答之前判断是否能根据 联合处理的结果判断本次接收的正确性， 若能执行步骤 204, 若不能， 则执 行步骤 207;
步骤 204: 主基站根据联合处理结果判断本次接收是否正确， 若正确执 行步骤 205 , 若不正确， 则执行步骤 206;
步骤 205: 主基站对本次上行业务信息下发 ACK, 本次基站间 CoMP流 程结束；
步骤 206: 主基站对本次上行业务信息下发 NACK, 本次基站间 CoMP 流程结束；
步骤 207: 主基站根据自身的处理结果判断本次接收是否正确， 若是， 执行步骤 208 , 若否， 则执行步骤 209;
步骤 208: 主基站对所述上行业务信息下发 ACK;
步骤 209: 主基站对上行业务信息下发临时 ACK;
步骤 210: 主基站等待或者联合处理协作基站的处理结果；
步骤 211 : 主基站在调度该上行业务进程的下一个上行业务信息之前判 断是否能根据联合处理的结果判断本次接收的正确性，若能，则执行步骤 212, 若不能， 则执行步骤 214;
步骤 212: 主基站判断本次接收是否正确， 若正确， 则执行步骤 213 , 若不正确， 则执行步骤 214;
步骤 213:主基站在下一个该上行业务进程的上行业务信息的调度时刻， 调度用户上传新的上行业务信息；
步骤 214:主基站在下一个该上行业务进程的上行业务信息的调度时刻， 调度用户重新上传上一次的上行业务信息。
实施例二：
如图 3所示本实施例提供了一种实现协同多点传输的主基站， 包括： 业 务调度模块、业务处理模块、联合处理模块、第一判断模块和信息确认模块； 业务调度模块用于调度用户的上行业务并确认上行业务的进程； 业务处理模块用于接收并处理用户发送的所述上行业务进程的上行业务 信息；
联合处理模块用于接收协作基站对上行业务信息的处理结果， 并对协作 基站和所述业务模块上行业务信息的处理结果做联合处理； 第一判断模块用于在对所述上行业务信息下发应答之前判断所述用户 的归属基站是否能根据联合处理的结果判断本次接收的正确性， 若不能， 则 通知所述信息确认模块根据所述业务模块的处理结果确定本次接收的正确性。
如图 4所示， 本实施例信息确认模块包括： 第二判断模块和下发模块； 第二判断模块用于根据自身的处理结果确定本次接收是否正确， 若是， 则通知所述下发模块对所述上行业务信息下发 ACK。
为了确保本次接收判断的准确性， 还需要再次利用联合处理结果来判断 本次接收。 因此本实施例中第二判断模块还用于根据自身的处理结果判断本 次接收是否正确， 若否， 则通知所述下发模块对所述上行业务信息下发临时 ACK; 所述联合处理模块还用于在下发临时 ACK之后等待或者联合处理协 作基站的处理结果， 所述第一判断模块还用于在调度上述上行业务进程的下 一个上行业务信息之前再次判断是否能根据联合处理的结果判断本次接收的 正确性， 若不能， 则通知所述调度模块在上述上行业务进程的下一个上行业 务信息的调度时刻， 调度用户重新上传上一次的上行业务信息。
如图 5所述， 本实施例中的实现协同多点传输的基站还包括： 第三判断 模块； 所述第三判断模块用于当在调度上述上行业务进程的下一个上行业务 信息之前能根据联合处理的结果判断本次接收的正确性时判断本次接收是否 正确， 若正确， 则通知所述业务调度模块在上述上行业务进程的下一个上行 业务信息的调度时刻， 调度用户上传新的上行业务信息， 若否， 则通知所述 调度模块在上述上行业务进程的下一个上行业务信息的调度时刻， 调度用户 重新上传上一次的上行业务信息。
本实施例中的上一个上行业务信息与下一个业务信息归属于同一个业 务进程。
如图 6所示， 本实施例还提供了一种实现协同多点传输的系统， 包括如 本实施例所述的主基站和至少一个协作基站； 该主基站与所述协作基站联合 接收用户的上行业务信息。
本实施例的实现协同多点传输的主基站能够在由于主基站与协作基站 之间的时延导致不能釆用联合处理结果来确认本次接收业务的正确性的情况 下， 根据自身对本次上行业务信息的处理结果确认本次接收的正确性； 当本 次接收不正确时， 下发一个临时 ACK给 UE, 让 UE不进行重传动作， 主基 站继续等待联合处理结果， 若最后还是不能够根据联合处理结果（如在主基 站还没有联合处理完成的情况下）确认本次接收的正确性， 或者根据联合处 理的结果确定本次接收为不正确时， 则要求 UE重新上传该次的上行业务信 息。 本实施例的实现协同多点传输的主基站提高小区边缘的吞吐量， 同时可 以提高系统的吞吐量。 在上行 COMP中，每个上行业务都对应一个进程，该进程规定了主基站 执行动作的时间， 在时间到达主基站就要执行相应的动作， 当一个进程结束 后代表一个上行业务信息上传成功或失败。 实施例三：
本实施例提供了一种实现协同多点传输的系统工作方法， 包括： 主基站接收并处理用户发送的上行业务信息；
协作基站接收并处理用户发送的上行业务信息， 并将对所述上行业务信 息的处理结果发送给所述主基站；
主基站对协作基站和自身的上行业务信息处理结果做联合处理； 主基站在对所述上行业务信息下发应答之前判断是否能根据联合处理的 结果判断本次接收的正确性， 若不能， 则根据自身的处理结果确定本次接收 的正确性。
如图 7所示， 对于 LTE FDD系统中实现基站间协同多点传输的方法具 体包括：
步骤 701 :主基站在第 n个子帧调度用户的上行业务并确认上行业务进程; 步骤 702: 主基站和协作基站在第 n+4个子帧接收并处理用户发送的该 上行业务进程的上行业务信息
步骤 703: 协作基站将协作基站的处理结果传输给主基站， 并由主基站做 联合处理
步骤 704: 主基站判断在第 n+8个子帧下发 ACK/NACK前可以根据联合 处理的结果判断本次接收的正确性， 如果主基站在第 n+8 个子帧下发 ACK/NACK前可以根据联合处理的结果判断本次接收的正确性，则执行步骤 705, 否则执行步骤 706;
步骤 705: 主基站根据联合处理结果判断本次接收是否正确，如果本次接 收正确则执行步骤 707 , 否则执行步骤 708； 步骤 706: 主基站根据自身的处理结果判断本次接收是否正确，如果正确 执行步骤 707 , 否则执行步骤 709;
步骤 707: 在 n+8个子帧下发 ACK, 本次站间 CoMP流程结束
步骤 708: 在 n+8个子帧下发 NACK, 本次站间 CoMP流程结束 步骤 709: 在 n+8个子帧下发 ACK即下发一个临时 ACK后执行步骤 710; 步骤 710: 主基站继续等待或者联合处理协作基站的处理结果
步骤 711 : 判断在第 n+16个子帧主基站调度同一个上行业务进程的下一 个业务信息前是否可以根据联合处理的结果判断本次接收的正确性， 如果在 第 n+16 个子帧主基站调度下一个业务信息前可以根据联合处理的结果判断 本次接收的正确性， 则执行步骤 712, 否则执行步骤 713;
步骤 712: 主基站判断本次接收是否正确，如果本次接收正确则执行步骤
714, 否则执行步骤 713。
步骤 713: 在第 n+16个子帧， 调度用户重新上传前一次的业务， 即给该 不翻转， 本次 CoMP流程结束。
步骤 714: 在第 n+16个子帧调度用户开始新的业务上传， 即给该用户下 发的 DCI中的 NDI翻转， 本次 CoMP流程结束。
本实施例中的 1个子帧为 1毫秒。
本实施例中的主基站是指用户的归属基站； 协作基站是指协助用户的归 属基站进行联合接收的基站。
本实施例的实现协同多点传输的方法能够在一定的站间时延范围内， 有 效的利用协作基站的处理结果， 使得上行基站间 CoMP可以有效的实现， 从 而提升整个网络的上行业务性能， 提高小区边缘的吞吐量， 同时可以提高系 统的吞吐量。 以上内容是结合具体的实施方式对本发明所作的进一步详细说明， 不能 认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通 技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若干简单推演或 替换， 都应当视为属于本发明的保护范围。
工业实用性
本发明实施例的实现协同多点传输的方法中在对所述上行业务信息下发 应答之前由于站间时延不能根据联合处理的结果判断本次接收的正确性的情 况下， 利用自身的处理结果来确认本次接收上行业务信息的正确性， 实现上 行基站间 CoMP, 提高小区边缘的吞吐量， 同时也可以提高系统的吞吐量。

Claims

权 利 要 求 书
1.一种实现协同多点传输的方法， 包括：
主基站调度用户的上行业务并确认上行业务进程；
主基站接收并处理用户发送的所述上行业务进程的上行业务信息； 所述主基站接收协作基站对所述上行业务信息的处理结果， 并对协作基 站和自身的上行业务信息处理结果做联合处理；
所述主基站在对所述上行业务信息下发应答之前判断是否能根据联合处 理的结果判断本次接收的正确性， 若不能， 则根据自身的处理结果确定本次 接收的正确性。
2.如权利要求 1所述的实现协同多点传输的方法， 其中， 所述根据自身 的处理结果确定本次接收的正确性的过程包括：
根据自身的处理结果判断本次接收是否正确， 若是， 则对所述上行业务 信息下发 ACK。
3.如权利要求 2所述的实现协同多点传输的方法， 其中， 所述根据自身 的处理结果确定本次接收的正确性的过程还包括：
根据自身的处理结果判断本次接收是否正确， 若否， 则对所述上行业务 信息下发临时 ACK;
在主基站对所述上行业务信息下发临时 ACK之后， 所述实现基站协同 多点传输的方法还包括：
主基站等待或者联合处理协作基站的处理结果；
主基站在调度所述上行业务进程的下一个上行业务信息之前再次判断是 否能根据联合处理的结果判断本次接收的正确性， 若不能， 则在所述上行业 务进程的下一个上行业务信息的调度时刻， 调度用户重新上传上一次的上行 业务信息。
4.如权利要求 3所述的实现协同多点传输的方法， 其中， 当主基站在调 度所述上行业务进程的下一个上行业务信息之前能根据联合处理的结果判 断本次接收的正确性时还包括：
主基站判断本次接收是否正确， 若正确， 则在所述上行业务进程的下一 个上行业务信息的调度时刻， 调度用户上传新的上行业务信息， 若否， 则在 所述上行业务进程的下一个上行业务信息的调度时刻， 调度用户重新上传上 一次的上行业务信息。
5.—种实现协同多点传输的主基站， 包括： 业务调度模块、 业务处理模 块、 联合处理模块、 第一判断模块和信息确认模块；
所述业务调度模块设置为：调度用户的上行业务并确认上行业务的进程； 所述业务处理模块设置为： 接收并处理用户发送的所述上行业务进程的 上行业务信息；
所述联合处理模块设置为： 接收协作基站对上行业务信息的处理结果， 并对协作基站和所述业务模块上行业务信息的处理结果做联合处理；
所述第一判断模块设置为： 在对所述上行业务信息下发应答之前判断所 述用户的归属基站是否能根据联合处理的结果判断本次接收的正确性， 若不 能， 则通知所述信息确认模块根据所述业务模块的处理结果确定本次接收的 正确性。
6.如权利要求 5所述的实现协同多点传输的主基站， 其中， 所述信息确 认模块包括： 第二判断模块和下发模块；
所述第二判断模块设置为： 根据自身的处理结果确定本次接收是否正确, 若是， 则通知所述下发模块对所述上行业务信息下发 ACK。
7.如权利要求 6所述的实现协同多点传输的主基站， 其中，
所述第二判断模块还设置为： 根据自身的处理结果判断本次接收是否正 确， 若否， 则通知所述下发模块对所述上行业务信息下发临时 ACK;
所述联合处理模块还设置为： 在下发临时 ACK之后等待或者联合处理 协作基站的处理结果； 所述第一判断模块还设置为： 在调度所述上行业务进程的下一个上行业 务信息之前再次判断是否能根据联合处理的结果判断本次接收的正确性， 若 不能， 则通知所述调度模块在所述上行业务进程的下一个上行业务信息的调 度时刻， 调度用户重新上传上一次的上行业务信息。
8.如权利要求 7所述的实现协同多点传输的主基站， 其中， 还包括： 第 三判断模块； 所述第三判断模块设置为： 当在调度所述上行业务进程的下一 个上行业务信息之前能根据联合处理的结果判断本次接收的正确性时判断 本次接收是否正确， 若正确， 则通知所述业务调度模块在所述上行业务进程 的下一个上行业务信息的调度时刻，调度用户上传新的上行业务信息，若否， 则通知所述调度模块在所述上行业务进程的下一个上行业务信息的调度时 刻， 调度用户重新上传上一次的上行业务信息。
9.一种实现协同多点传输的系统， 包括： 如权利要求 5-8任一项所述的 主基站和至少一个协作基站； 所述主基站与所述协作基站联合接收用户的上 行业务信息。
10.—种实现协同多点传输的系统工作方法， 包括：
主基站接收并处理用户发送的上行业务信息；
协作基站接收并处理用户发送的上行业务信息， 并将对所述上行业务信 息的处理结果发送给所述主基站；
所述主基站对协作基站和自身的上行业务信息处理结果做联合处理； 所述主基站在对所述上行业务信息下发应答之前判断是否能根据联合处 理的结果判断本次接收的正确性， 若不能， 则根据自身的处理结果确定本次 接收的正确性。
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