CN113765551A

CN113765551A - Terminal pairing method and base station in MU-MIMO

Info

Publication number: CN113765551A
Application number: CN202010493987.0A
Authority: CN
Inventors: 周娇; 何文林; 黄庆; 陈卓
Original assignee: China Mobile Communications Group Co Ltd; Research Institute of China Mobile Communication Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; Research Institute of China Mobile Communication Co Ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-12-07
Anticipated expiration: 2040-06-03
Also published as: CN113765551B

Abstract

The present invention provides a terminal pairing method and a base station in MU-MIMO, and belongs to the technical field of wireless communication. grouping the multiple terminals; pairing the first grouping and the second grouping in the obtained grouping; for the terminals in the first grouping, selecting the terminals in the second grouping for pairing; wherein , the first group and the second group are separated by at least M groups, where M is a preset value and is a positive integer. The invention can reduce the pairing difficulty of MU-MIMO, improve the pairing accuracy, reduce the pairing delay and overhead, and thus improve the MU-MIMO performance. It is especially suitable for special coverage scenarios such as high-speed rail high-speed scenarios or subways.

Description

Terminal pairing method and base station in MU-MIMO

技术领域technical field

本发明涉及无线通信技术领域，尤其涉及一种MU-MIMO中的终端配对方法及基站。The present invention relates to the technical field of wireless communication, and in particular, to a terminal pairing method and a base station in MU-MIMO.

背景技术Background technique

现网中为了提升网络整体性能，采用多用户多输入多输出(Multi-UserMultiple-Input-Multiple-Output，MU-MIMO)实现多用户空间复用。现有MU-MIMO采用终端上报预编码矩阵指示(Precoding Matrix Indicator，PMI)或上行信道探测用参考信号(Sounding Reference Signal，SRS)估计小区内每用户的信道环境，然后采用轮询的方式每2～4用户做配对检测，选择匹配指数最高(如匹配后信道质量指示(Channel QualityIndicator，CQI)最高)的用户对采用MU-MIMO，提升小区性能(如小区平均吞吐量)。In an existing network, in order to improve the overall performance of the network, multi-user multiple-input multiple-output (Multi-User Multiple-Input-Multiple-Output, MU-MIMO) is used to realize multi-user spatial multiplexing. Existing MU-MIMO uses the terminal to report a Precoding Matrix Indicator (PMI) or an uplink channel sounding reference signal (Sounding Reference Signal, SRS) to estimate the channel environment of each user in the cell, and then uses a polling method every 2 ~4 users perform pairing detection, and select the user with the highest matching index (eg, the highest channel quality indicator (CQI) after matching) to use MU-MIMO to improve cell performance (eg, cell average throughput).

现有实现方法需要小区内所有用户每两用户通过配对算法两两配对，计算量极大，时延也较长。The existing implementation method requires that every two users in the cell are paired in pairs through a pairing algorithm, which requires a large amount of computation and a long delay.

发明内容SUMMARY OF THE INVENTION

有鉴于此，本发明提供一种MU-MIMO中的终端配对方法及基站，用于解决目前MU-MIMO中的终端配对方法需要小区内所有用户每两用户通过配对算法两两配对，计算量极大，时延也较长的问题。In view of this, the present invention provides a terminal pairing method in MU-MIMO and a base station, which are used to solve the problem that the current terminal pairing method in MU-MIMO requires that every two users in a cell are paired in pairs through a pairing algorithm, which is extremely computationally expensive. large, and the delay is also long.

为解决上述技术问题，第一方面，本发明提供一种MU-MIMO中的终端配对方法，应用于基站，包括：In order to solve the above technical problems, in the first aspect, the present invention provides a terminal pairing method in MU-MIMO, which is applied to a base station, including:

根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组；According to the signal change information when the multiple terminals pass through the transceiver point of the base station in sequence, the multiple terminals are grouped according to the passing order;

对得到的分组中的第一分组和第二分组做配对；Pairing the first grouping and the second grouping in the obtained grouping;

对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对；For the terminal in the first group, select the terminal in the second group for pairing;

其中，所述第一分组和所述第二分组至少间隔M个分组，所述M为预设值且为正整数。Wherein, the first group and the second group are separated by at least M groups, and M is a preset value and a positive integer.

可选的，所述信号变化信息为：参考信号接收功率逐渐变大后又开始变小的变化信息，或者频偏从负偏翻转到正偏的变化信息。Optionally, the signal change information is: change information that the received power of the reference signal gradually increases and then begins to decrease, or the change information that the frequency offset is reversed from negative offset to positive offset.

可选的，所述根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组的步骤包括：Optionally, the step of grouping the multiple terminals according to the passing order according to the signal change information when the multiple terminals pass through the transceiver points of the base station in sequence includes:

根据所述终端的个数进行分组，对经过所述收发点的所述终端进行计数，每N个所述终端作为一个所述分组，N为正整数；或者，Grouping is performed according to the number of the terminals, the terminals passing through the transceiver point are counted, each N of the terminals is regarded as one of the groups, and N is a positive integer; or,

根据所述终端经过所述收发点的时间对所述终端进行分组，每T时间段内经过所述收发点的所述终端作为一个所述分组，T大于零；或者，The terminals are grouped according to the time when the terminal passes the transceiver point, and the terminal passing through the transceiver point in every T time period is regarded as one of the groups, and T is greater than zero; or,

根据所述终端的个数和所述终端经过所述收发点的时间对所述终端进行分组。The terminals are grouped according to the number of the terminals and the time when the terminals pass the transceiver point.

可选的，所述根据所述终端的个数和所述终端经过所述收发点的时间对所述终端进行分组的步骤包括：Optionally, the step of grouping the terminals according to the number of the terminals and the time when the terminals pass the transceiver point includes:

若T时间段内经过所述收发点的所述终端的个数不足N个，则以T时间段经过所述收发点的所述终端为一个所述分组，并重新开始计时、计数；If the number of the terminals passing through the sending and receiving point in the T time period is less than N, the terminal passing through the sending and receiving point in the T time period is regarded as one of the groupings, and the timing and counting are restarted;

若经过所述收发点的所述终端的个数已满N个但距离计数开始的时间不足T时间，则以N个所述终端作为一个所述分组，并重新开始计时、计数。If the number of the terminals passing through the sending and receiving point is full N but the time from the start of counting is less than T time, the N terminals are taken as one of the grouping, and the timing and counting are restarted.

可选的，所述对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对的步骤包括：Optionally, for the terminal in the first group, the step of selecting the terminal in the second group for pairing includes:

选择所述第二分组内参考信号接收功率与目标终端的差值大于3dB的终端，与目标终端做配对；或者，Select a terminal whose difference between the received power of the reference signal in the second group and the target terminal is greater than 3dB, and pair with the target terminal; or,

选择所述第二分组内参考信号接收功率与目标终端的差值大于3dB且小于10dB的所述终端，与目标终端做配对；selecting the terminal whose difference between the received power of the reference signal in the second group and the target terminal is greater than 3dB and less than 10dB, and pairing with the target terminal;

其中，所述目标终端为所述第一分组内的所述终端。Wherein, the target terminal is the terminal in the first group.

可选的，所述对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对的步骤之后，还包括：Optionally, after the step of selecting the terminal in the second group for pairing with respect to the terminal in the first group, the method further includes:

将第一信息传递给下一基站，所述第一信息包括以下信息中的至少之一：Transfer first information to the next base station, where the first information includes at least one of the following information:

所述终端的标识信息；the identification information of the terminal;

所述终端所属的所述分组的信息；information about the group to which the terminal belongs;

所述分组的配对信息；pairing information of the group;

所述终端的配对信息；pairing information of the terminal;

其中，所述下一基站为根据所述终端的移动方向确定的相邻基站。Wherein, the next base station is an adjacent base station determined according to the moving direction of the terminal.

可选的，所述将第一信息传递给下一基站的步骤包括：Optionally, the step of delivering the first information to the next base station includes:

通过X2接口的终端历史信息，将所述第一信息传递给下一基站。The first information is transmitted to the next base station through the terminal history information of the X2 interface.

可选的，所述终端为同一交通工具内的终端，所述根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组的步骤之后，还包括：Optionally, the terminal is a terminal in the same vehicle, and after the step of grouping the plurality of terminals according to the sequence according to the signal change information when the plurality of terminals pass through the transceiver points of the base station in sequence, Also includes:

删除所述分组内下车的所述终端；和/或，delete the terminal that gets off in the group; and/or,

在所述分组内增加上车的第一终端。The first terminal that gets on the bus is added to the group.

可选的，所述在所述分组内增加上车的第一终端的步骤包括：Optionally, the step of adding the first terminal on board in the grouping includes:

在根据所述第一终端的信号变化信息判断所述第一终端经过所述基站的收发点之后，将所述第一终端添加进第二终端所在的分组，所述第二终端为在所述第一终端之前上一个经过所述基站的收发点的所述终端。After judging that the first terminal passes through the transceiver point of the base station according to the signal change information of the first terminal, the first terminal is added to the group where the second terminal is located, and the second terminal is located in the base station. The terminal that passed through the transceiver point of the base station last before the first terminal.

可选的，所述根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组；对得到的分组中的第一分组和第二分组做配对；对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对的步骤包括：Optionally, according to the signal change information when the multiple terminals pass through the transceiver points of the base station in sequence, the multiple terminals are grouped according to the passing order; pairing; for the terminals in the first group, the step of selecting the terminals in the second group for pairing includes:

若满足配对更新触发条件，则根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组；对得到的分组中的第一分组和第二分组做配对；对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对。If the pairing update trigger condition is satisfied, then according to the signal change information when the multiple terminals pass through the transceiver point of the base station in sequence, the multiple terminals are grouped according to the passing order; For the terminal in the first group, select the terminal in the second group for pairing.

可选的，所述配对更新触发条件包括以下至少之一：Optionally, the pairing update triggering condition includes at least one of the following:

小区更新；community update;

距离上一次更新的时间已达到一个更新周期；The time since the last update has reached an update cycle;

判断出所述终端经过所述基站的新的收发点。It is determined that the terminal passes through a new transceiver point of the base station.

第二方面，本发明还提供一种基站，包括：In a second aspect, the present invention also provides a base station, including:

分组模块，用于根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组；a grouping module, configured to group the plurality of terminals according to the passing order according to the signal change information when the plurality of terminals pass through the transceiver points of the base station in sequence;

分组配对模块，用于对得到的分组中的第一分组和第二分组做配对；grouping pairing module, for pairing the first grouping and the second grouping in the obtained grouping;

终端配对模块，用于对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对；a terminal pairing module, configured to select the terminal in the second group for pairing with respect to the terminal in the first group;

可选的，所述分组模块包括：Optionally, the grouping module includes:

第一分组单元，用于根据所述终端的个数进行分组，对经过所述收发点的所述终端进行计数，每N个所述终端作为一个所述分组，N为正整数；或者，a first grouping unit, configured to perform grouping according to the number of the terminals, and count the terminals passing through the transceiver point, each N of the terminals is used as one of the groups, and N is a positive integer; or,

第二分组单元，用于根据所述终端经过所述收发点的时间对所述终端进行分组，每T时间段内经过所述收发点的所述终端作为一个所述分组，T大于零；或者，a second grouping unit, configured to group the terminals according to the time when the terminal passes the sending and receiving point, and the terminal passing through the sending and receiving point in every T time period is regarded as one of the groups, and T is greater than zero; or ,

第三分组单元，用于根据所述终端的个数和所述终端经过所述收发点的时间对所述终端进行分组。The third grouping unit is configured to group the terminals according to the number of the terminals and the time when the terminals pass the sending and receiving point.

可选的，所述第三分组单元，用于若T时间段内经过所述收发点的所述终端的个数不足N个，则以T时间段经过所述收发点的所述终端为一个所述分组，并重新开始计时、计数；若经过所述收发点的所述终端的个数已满N个但距离计数开始的时间不足T时间，则以N个所述终端作为一个所述分组，并重新开始计时、计数。Optionally, the third grouping unit is configured to, if the number of the terminals passing through the sending and receiving point in the T time period is less than N, take the terminal passing through the sending and receiving point in the T time period as one. the grouping, and restart the timing and counting; if the number of the terminals passing through the sending and receiving point is full N but the time from the start of counting is less than T time, the N terminals are used as one of the groupings , and restart timing and counting.

可选的，所述终端配对模块包括：Optionally, the terminal pairing module includes:

第一终端配对单元，用于选择所述第二分组内参考信号接收功率与目标终端的差值大于3dB的终端，与目标终端做配对；或者，a first terminal pairing unit, configured to select a terminal whose difference between the received power of the reference signal in the second group and the target terminal is greater than 3dB, and pair it with the target terminal; or,

第二终端配对单元，用于选择所述第二分组内参考信号接收功率与目标终端的差值大于3dB且小于10dB的所述终端，与目标终端做配对；A second terminal pairing unit, configured to select the terminal whose difference between the received power of the reference signal in the second group and the target terminal is greater than 3dB and less than 10dB, and pair with the target terminal;

可选的，所述基站还包括：Optionally, the base station further includes:

发送模块，用于将第一信息传递给下一基站，所述第一信息包括以下信息中的至少之一：A sending module, configured to transmit first information to the next base station, where the first information includes at least one of the following information:

所述终端的标识信息；the identification information of the terminal;

所述分组的配对信息；pairing information of the group;

所述终端的配对信息；pairing information of the terminal;

可选的，所述发送模块，用于通过X2接口的终端历史信息，将所述第一信息传递给下一基站。Optionally, the sending module is configured to transmit the first information to the next base station through the terminal history information of the X2 interface.

可选的，所述终端为同一交通工具内的终端，所述基站还包括：Optionally, the terminal is a terminal in the same vehicle, and the base station further includes:

删除模块，用于删除所述分组内下车的所述终端；和/或，a deletion module for deleting the terminal that gets off the bus in the group; and/or,

增加模块，用于在所述分组内增加上车的第一终端。An adding module is used to add the first terminal to get on the vehicle in the group.

可选的，所述增加模块包括：Optionally, the adding module includes:

添加单元，用于在根据所述第一终端的信号变化信息判断所述第一终端经过所述基站的收发点之后，将所述第一终端添加进第二终端所在的分组，所述第二终端为在所述第一终端之前上一个经过所述基站的收发点的所述终端。The adding unit is configured to add the first terminal to the group where the second terminal is located after judging that the first terminal passes through the transceiver point of the base station according to the signal change information of the first terminal. The terminal is the terminal that passed through the transceiver point of the base station last before the first terminal.

可选的，所述分组模块，用于若满足配对更新触发条件，则根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组；所述分组配对模块，用于对得到的分组中的第一分组和第二分组做配对；所述终端配对模块，用于对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对。Optionally, the grouping module is configured to, if a pairing update trigger condition is satisfied, group the multiple terminals in the order of passing according to the signal change information when the multiple terminals pass through the transceiver points of the base station in sequence; The grouping pairing module is used for pairing the first grouping and the second grouping in the obtained grouping; the terminal pairing module is used for selecting the terminal in the second grouping for the terminal in the first grouping pairing with the terminal.

小区更新；community update;

第三方面，本发明还提供一种基站，包括：收发器和处理器；In a third aspect, the present invention also provides a base station, including: a transceiver and a processor;

所述处理器，用于根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组；The processor is configured to group the plurality of terminals according to the passing order according to the signal change information when the plurality of terminals pass through the transceiver points of the base station in sequence;

所述处理器，还用于对得到的分组中的第一分组和第二分组做配对；The processor is further configured to pair the first grouping and the second grouping in the obtained grouping;

所述处理器，还用于对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对；The processor is further configured to, for the terminals in the first group, select the terminals in the second group for pairing;

可选的，所述处理器，用于根据所述终端的个数进行分组，对经过所述收发点的所述终端进行计数，每N个所述终端作为一个所述分组，N为正整数；或者，Optionally, the processor is configured to group the terminals according to the number of the terminals, and count the terminals passing through the transceiver point, and each N of the terminals is used as one of the groups, and N is a positive integer. ;or,

所述处理器，用于根据所述终端经过所述收发点的时间对所述终端进行分组，每T时间段内经过所述收发点的所述终端作为一个所述分组，T大于零；或者，The processor is configured to group the terminals according to the time when the terminal passes the transceiver point, and the terminal passing through the transceiver point in every T time period is regarded as one of the groups, and T is greater than zero; or ,

所述处理器，用于根据所述终端的个数和所述终端经过所述收发点的时间对所述终端进行分组。The processor is configured to group the terminals according to the number of the terminals and the time at which the terminals pass the transceiver point.

可选的，所述处理器，用于若T时间段内经过所述收发点的所述终端的个数不足N个，则以T时间段经过所述收发点的所述终端为一个所述分组，并重新开始计时、计数；若经过所述收发点的所述终端的个数已满N个但距离计数开始的时间不足T时间，则以N个所述终端作为一个所述分组，并重新开始计时、计数。Optionally, the processor is configured to, if the number of the terminals passing through the transceiver point in the T time period is less than N, take the terminal passing through the transceiver point in the T period as one of the terminals. grouping, and restart timing and counting; if the number of the terminals passing through the sending and receiving point is full N but the time from the start of counting is less than T time, the N terminals are used as one of the grouping, and Restart timing and counting.

可选的，所述处理器，用于选择所述第二分组内参考信号接收功率与目标终端的差值大于3dB的终端，与目标终端做配对；或者，选择所述第二分组内参考信号接收功率与目标终端的差值大于3dB且小于10dB的所述终端，与目标终端做配对；Optionally, the processor is configured to select a terminal whose difference between the received power of the reference signal in the second group and the target terminal is greater than 3 dB, and pair with the target terminal; or, select the reference signal in the second group The terminal whose difference between the received power and the target terminal is greater than 3dB and less than 10dB is paired with the target terminal;

可选的，所述收发器，用于将第一信息传递给下一基站，所述第一信息包括以下信息中的至少之一：Optionally, the transceiver is configured to transmit first information to the next base station, where the first information includes at least one of the following information:

所述终端的标识信息；the identification information of the terminal;

所述分组的配对信息；pairing information of the group;

所述终端的配对信息；pairing information of the terminal;

可选的，所述收发器，用于通过X2接口的终端历史信息，将所述第一信息传递给下一基站。Optionally, the transceiver is configured to transmit the first information to the next base station through the terminal history information of the X2 interface.

可选的，所述终端为同一交通工具内的终端，所述处理器，还用于删除所述分组内下车的所述终端；和/或，在所述分组内增加上车的第一终端。Optionally, the terminal is a terminal in the same vehicle, and the processor is further configured to delete the terminal that gets off the vehicle in the group; and/or, adds the first terminal that gets on the vehicle in the group. terminal.

可选的，所述处理器，还用于在根据所述第一终端的信号变化信息判断所述第一终端经过所述基站的收发点之后，将所述第一终端添加进第二终端所在的分组，所述第二终端为在所述第一终端之前上一个经过所述基站的收发点的所述终端。Optionally, the processor is further configured to add the first terminal to the location where the second terminal is located after judging that the first terminal passes through the transceiver point of the base station according to the signal change information of the first terminal. The second terminal is the terminal that passed through the transceiver point of the base station last before the first terminal.

可选的，所述处理器，用于若满足配对更新触发条件，则根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组；对得到的分组中的第一分组和第二分组做配对；对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对。Optionally, the processor is configured to, if the pairing update trigger condition is satisfied, group the multiple terminals in the order of passing according to the signal change information when the multiple terminals pass through the transceiver points of the base station in sequence; The first group and the second group in the obtained group are paired; for the terminal in the first group, the terminal in the second group is selected for pairing.

小区更新；community update;

第四方面，本发明还提供一种基站，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序；所述处理器执行所述程序时实现上述任一种MU-MIMO中的终端配对方法中的步骤。In a fourth aspect, the present invention further provides a base station, including a memory, a processor, and a program stored on the memory and executable on the processor; the processor implements any of the above when executing the program Steps in a terminal pairing method in MU-MIMO.

第五方面，本发明还提供一种可读存储介质，其上存储有程序，该程序被处理器执行时实现上述任一种MU-MIMO中的终端配对方法中的步骤。In a fifth aspect, the present invention further provides a readable storage medium, on which a program is stored, and when the program is executed by a processor, implements the steps in any of the foregoing terminal pairing methods in MU-MIMO.

本发明的上述技术方案的有益效果如下：The beneficial effects of the above-mentioned technical solutions of the present invention are as follows:

本发明实施例，能够降低MU-MIMO的配对难度，提升配对精度，降低配对时延和开销，从而提高MU-MIMO性能。尤其适用于高铁高速场景或地铁等特殊覆盖场景。The embodiments of the present invention can reduce the pairing difficulty of MU-MIMO, improve the pairing accuracy, and reduce the pairing delay and overhead, thereby improving the MU-MIMO performance. It is especially suitable for special coverage scenarios such as high-speed rail high-speed scenarios or subways.

附图说明Description of drawings

图1为本发明实施例中的一种MU-MIMO中的终端配对方法的流程示意图；FIG. 1 is a schematic flowchart of a terminal pairing method in MU-MIMO according to an embodiment of the present invention;

图2为本发明实施例中的一种基站的结构示意图；FIG. 2 is a schematic structural diagram of a base station in an embodiment of the present invention;

图3为本发明实施例中的另一种基站的结构示意图；3 is a schematic structural diagram of another base station in an embodiment of the present invention;

图4为本发明实施例中的又一种基站的结构示意图。FIG. 4 is a schematic structural diagram of still another base station in an embodiment of the present invention.

具体实施方式Detailed ways

为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本发明保护的范围。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of the present invention.

针对目前MU-MIMO中的终端配对方法需要小区内所有用户每两用户通过配对算法两两配对，计算量极大，时延也较长的问题，现有改进方案中，通过终端SRS上报或同步信号块和/或物理广播信道块(Synchronization Signal and PBCH block，SSB，也即SS/PBCHBlock，包含PSS(主同步信号)、SSS(副同步信号)和PBCH(物理广播信道)，也可以称为同步信号/广播信道块)上报，根据终端所处波束区分终端所处区域，不同区域终端再采用配对算法实现两两配对。这种方式在大规模天线普通环境下，终端信道变化较慢，区域精度较高，可适用。但是在高铁场景下，实现性能较差。首先高铁设备天线数较少，8TR(transmitter and receiver)最大实现4波束，600米站间距，每波束约覆盖80米，约4节车厢，8节车厢的高铁最大分为2片区域。同时终端运行速度快，此方案不合适。Aiming at the problem that the current terminal pairing method in MU-MIMO requires all users in the cell to be paired in pairs through the pairing algorithm, which requires a large amount of calculation and a long delay, in the existing improvement scheme, the terminal SRS is used for reporting or synchronization. Signal block and/or physical broadcast channel block (Synchronization Signal and PBCH block, SSB, also known as SS/PBCH Block, including PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal) and PBCH (Physical Broadcast Channel), also known as Synchronization signal/broadcast channel block) report, distinguish the area where the terminal is located according to the beam where the terminal is located, and then use the pairing algorithm to achieve pairing of terminals in different areas. In the general environment of large-scale antennas, this method is applicable because the terminal channel changes slowly and the regional accuracy is high. However, in the high-speed rail scenario, the implementation performance is poor. First of all, there are few high-speed rail equipment antennas. 8TR (transmitter and receiver) can achieve a maximum of 4 beams with a station spacing of 600 meters. Each beam covers about 80 meters and has about 4 carriages. The 8-car high-speed rail can be divided into 2 areas at most. At the same time, the terminal runs fast, so this solution is not suitable.

请参阅图1，图1为本发明实施例提供的一种MU-MIMO中的终端配对方法的流程示意图，该方法应用于基站，包括以下步骤：Please refer to FIG. 1. FIG. 1 is a schematic flowchart of a method for pairing terminals in MU-MIMO according to an embodiment of the present invention. The method is applied to a base station and includes the following steps:

步骤11：根据多个终端依次经过所述基站的收发点(Transmission/ReceptionPoint，TRP)时的信号变化信息，按照经过次序对所述多个终端进行分组；Step 11: According to the signal change information when the multiple terminals pass through the transceiver point (Transmission/ReceptionPoint, TRP) of the base station in sequence, the multiple terminals are grouped according to the passing order;

本发明实施例中，在按照终端经过所述收发点的次序对所述终端进行分组后得到的各个分组也依次排序。In this embodiment of the present invention, each grouping obtained after the terminals are grouped according to the order in which the terminals pass through the sending and receiving points are also sorted in sequence.

步骤12：对得到的分组中的第一分组和第二分组做配对；Step 12: pair the first grouping and the second grouping in the obtained grouping;

步骤13：对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对；Step 13: For the terminals in the first group, select the terminals in the second group for pairing;

其中，所述第一分组和所述第二分组至少间隔M个分组，所述M为预设值且为正整数。也即相差M个分组的分组内终端可以直接配对。Wherein, the first group and the second group are separated by at least M groups, and M is a preset value and a positive integer. That is, terminals within a group that differ by M groups can be directly paired.

其中，所述第二分组可以是一个分组也可以多个分组。例如，第一分组是第一个分组，第二分组可以是第五个分组、第六个分组、第七个分组和第八个分组，在需要对第一分组中的一个终端进行配对时，可以选第五个分组中的一个终端来配对，也可以选择第六个分组中的一个终端来配对，或选择第七个分组中的一个终端来配对，还可以选择第八个分组中的终端来配对。Wherein, the second group may be one group or multiple groups. For example, the first group is the first group, and the second group may be the fifth group, the sixth group, the seventh group, and the eighth group. When pairing a terminal in the first group, You can choose a terminal in the fifth group for pairing, or you can choose a terminal in the sixth group for pairing, or choose a terminal in the seventh group for pairing, and you can also choose a terminal in the eighth group. to pair.

也即，本发明实施例中，根据终端所属的分组配对终端传输MU数据。That is, in this embodiment of the present invention, the terminal is paired to transmit MU data according to the group to which the terminal belongs.

本发明实施例中，所述多个终端之间的相对位置基本固定。不同所述分组内的终端位置不同且相邻所述分组内的所述终端位置邻近。例如，所述多个终端可以是位于同一地铁或同一高铁上的终端，当然所述多个终端也可以是位于除地铁或高铁以外的其他大规模运载工具上的终端。In this embodiment of the present invention, the relative positions of the multiple terminals are basically fixed. The positions of terminals in different groups are different and the positions of terminals in adjacent groups are adjacent. For example, the multiple terminals may be terminals located on the same subway or the same high-speed railway. Of course, the multiple terminals may also be terminals located on other large-scale vehicles other than the subway or the high-speed railway.

本发明实施例提供的MU-MIMO中的终端配对方法，能够降低MU-MIMO的配对难度，提升配对精度，降低配对时延和开销，从而提高MU-MIMO性能。尤其适用于高铁高速场景或地铁等特殊覆盖场景。The terminal pairing method in MU-MIMO provided by the embodiments of the present invention can reduce the pairing difficulty of MU-MIMO, improve the pairing accuracy, and reduce the pairing delay and overhead, thereby improving the MU-MIMO performance. It is especially suitable for special coverage scenarios such as high-speed rail high-speed scenarios or subways.

下面举例说明上述MU-MIMO中的终端配对方法。The terminal pairing method in the above-mentioned MU-MIMO is illustrated below by way of example.

可选的，所述信号变化信息为：参考信号接收功率(Reference Signal ReceivedPower，RSRP)逐渐变大后又开始变小的变化信息，或者频偏从负偏翻转到正偏的变化信息。Optionally, the signal variation information is: variation information that the reference signal received power (Reference Signal Received Power, RSRP) gradually increases and then starts to decrease, or the variation information that the frequency offset flips from negative offset to positive offset.

终端经过基站的收发点时，处于站下，路损(PathLoss)较低，RSRP较高；终端处于两个收发点之间时，PathLoss较高，RSRP较低。也即，终端在逐渐靠近基站的收发点时，RSRP由低变高，然后在收发点下时RSRP达到最高，然后随着终端逐渐远离收发点，RSRP又从高变低，类似于正弦波。另外，终端在逐渐靠近基站的收发点时，频偏为负偏且偏移绝限值逐渐变小，然后在收发点下时频偏为零，然后随着终端逐渐远离收发点，频偏变为正偏且逐渐增大。相对RSRP的变化，频偏变化抖动更小。在高铁专网之类的特殊场景下，这种变化规律尤其明显。终端经过基站的收发点，也可以称为过杆。When the terminal passes through the transceiver point of the base station and is under the station, the path loss (PathLoss) is low and the RSRP is high; when the terminal is between the two transceiver points, the PathLoss is high and the RSRP is low. That is, when the terminal is gradually approaching the transceiver point of the base station, the RSRP changes from low to high, and then the RSRP reaches the highest when the terminal is below the transceiver point. Then, as the terminal gradually moves away from the transceiver point, the RSRP changes from high to low, similar to a sine wave. In addition, when the terminal is gradually approaching the transceiver point of the base station, the frequency offset is negative and the offset limit value gradually becomes smaller, and then the time-frequency offset is zero at the transceiver point, and then as the terminal gradually moves away from the transceiver point, the frequency offset changes. positive and gradually increasing. Compared with the change of RSRP, the jitter of frequency offset change is smaller. In special scenarios such as high-speed rail networks, this pattern of change is particularly evident. The terminal passes through the transceiver point of the base station, which can also be called over-the-rod.

本发明实施例中，基站可以根据终端的RSRP的变化判断所述终端是否经过所述收发点(即是否过杆)，如果某一终端的RSRP由低变高到最高点之后又由高变低，也即RSRP经过拐点，则该终端经过基站的收发点。也可以根据终端的频偏变化判断所述终端是否经过所述收发点(即是否过杆)，如果一个终端的频偏由负偏翻转为正偏，则该终端经过基站的收发点。In the embodiment of the present invention, the base station can judge whether the terminal passes the receiving and sending point (ie, whether it has passed the pole) according to the change of the RSRP of the terminal. If the RSRP of a terminal changes from low to high to the highest point and then changes from high to low , that is, the RSRP passes through the inflection point, and the terminal passes through the transceiver point of the base station. It is also possible to judge whether the terminal passes the transceiver point (ie, whether it crosses the pole) according to the frequency offset change of the terminal. If the frequency offset of a terminal is reversed from negative offset to positive offset, the terminal passes through the base station transceiver point.

对于高铁专网场景，高铁车厢环境具备天然隔离环境，每节车厢间有隔离门关闭，且每节车厢约有5米的厕所洗手间隔开，每节车厢一个网格化。间隔2节车厢以上的终端干扰几乎为零，可以直接完成匹配，无需采用信道相关性算法计算终端相关度。根据终端的个数进行分组时，考虑到每节车厢80～100人，7～8成为中国移动用户，因此N可配置为60，也即对经过所述收发点的所述终端进行计数，每60个终端一组。如果上座率较高，则一节车厢1～2组，上座率较低时，大约2车厢一组。按照所述终端经过所述收发点的时间对所述终端进行分组时，考虑高铁车速一般为350千米/小时，每节车厢过杆约250毫秒，因此T可配置为200毫秒。M可以取值为4，间隔大于或等于4组，终端间隔至少2～3节车厢，满足隔离度要求。For the high-speed rail private network scenario, the high-speed rail car environment has a natural isolation environment. There are isolation doors between each car, and each car is separated by about 5 meters of toilets for hand washing, and each car is gridded. The interference of terminals with an interval of more than 2 cars is almost zero, and the matching can be completed directly without using the channel correlation algorithm to calculate the terminal correlation. When grouping according to the number of terminals, considering that there are 80 to 100 people in each carriage, 7 to 8 become China Mobile users, so N can be configured as 60, that is, the terminals passing through the sending and receiving points are counted, and each A group of 60 terminals. If the occupancy rate is high, there will be 1 to 2 groups of one car, and if the occupancy rate is low, about 2 cars will be used in a group. When the terminals are grouped according to the time when the terminals pass through the sending and receiving point, considering that the speed of a high-speed train is generally 350 km/h, and each carriage passes the pole for about 250 milliseconds, T can be configured to be 200 milliseconds. M can take a value of 4, the interval is greater than or equal to 4 groups, and the terminal interval is at least 2 to 3 carriages to meet the isolation requirements.

对于高铁专网场景，N可配置为60，T可以配置为200毫秒。统计经过基站的收发点的终端数量，如果经过收发点的终端数量已经有60个但是尚不满200ms，则以该60个终端为一组，并重新开始计时、计数；如果200ms后经过基站的收发点的终端仍不满60个，则以该200ms内经过所述基站的收发点的终端为一组。For the high-speed rail private network scenario, N can be configured to be 60, and T can be configured to be 200 milliseconds. Count the number of terminals passing through the transceiver point of the base station. If there are already 60 terminals passing through the transceiver point but less than 200ms, take the 60 terminals as a group, and restart the timing and counting; If the number of terminals at the base station is still less than 60, the terminals passing through the transceiver point of the base station within the 200 ms are taken as a group.

本发明实施例中，可以按过杆终端个数和过杆时间模拟所述终端所处的车厢，无需精准的定位技术。In the embodiment of the present invention, the carriage in which the terminal is located can be simulated according to the number of pole-passing terminals and the pole-passing time, and precise positioning technology is not required.

另外，对于高铁场景，高铁车厢环境具备天然隔离环境，每节车厢间有隔离门关闭，且每节车厢约有5米的厕所洗手间隔开，每节车厢一个网格化。因此，在其他的可选实施例中，可以根据所述终端经过所述基站的收发点时的信号变化信息判断所述终端所处的车厢，每节车厢内的终端为一组。高铁长为8节车厢或16节车厢，M可以取值为4，也即每隔大于或等于4节车厢的终端可以配对。如8节车厢，则第1节车厢与第5～8节车厢配对、第2节车厢与第6～8节车厢配对、第3节车厢与第7～8节车厢配对、第4节车厢与第8节车厢配对2流或4流。例如16节车厢，则1/5/9/13、2/6/10/14、3/7/11/15、4/8/12/16组终端配对4流。对于8节车厢，建议1/5、2/6、3/7、4/8分组终端配对，可以最优化配对性能和简化配对算法。In addition, for the high-speed rail scenario, the high-speed rail car environment has a natural isolation environment. There are isolation doors between each car, and each car is separated by about 5 meters of toilets for hand washing, and each car is gridded. Therefore, in other optional embodiments, the car in which the terminal is located may be determined according to the signal change information when the terminal passes through the transceiver point of the base station, and the terminals in each car are a group. The length of the high-speed rail is 8 cars or 16 cars, and M can be set to 4, that is, every terminal greater than or equal to 4 cars can be paired. If there are 8 cars, the 1st car is paired with the 5th to 8th cars, the 2nd car is paired with the 6th to 8th cars, the 3rd car is paired with the 7th to 8th cars, and the 4th car is paired with the 6th to 8th cars. The 8th car is paired with 2-stream or 4-stream. For example, with 16 carriages, 1/5/9/13, 2/6/10/14, 3/7/11/15, 4/8/12/16 groups of terminals are paired with 4 streams. For 8 cars, 1/5, 2/6, 3/7, 4/8 group terminal pairing is recommended, which can optimize the pairing performance and simplify the pairing algorithm.

本发明实施例中，在对终端做配对时，可以选择2个终端做配对也可以选择4个终端做配对，也即配对2流或4流。当然也可以选择其他个数的终端做配对，例如3个终端做配对，此处不做限制。但是，做配对的终端中，任意两个终端所属的分组至少间隔M个分组。In this embodiment of the present invention, when pairing terminals, two terminals may be selected for pairing or four terminals may be selected for pairing, that is, two-stream or four-stream pairing. Of course, other numbers of terminals can also be selected for pairing, for example, 3 terminals are paired, which is not limited here. However, among the paired terminals, the groups to which any two terminals belong are separated by at least M groups.

本发明实施例中，要求配对的终端之间的RSRP值差值大于3dB，可以避免终端偶发性移动导致配对终端之间的距离不满足隔离度要求，例如因偶发性移动导致终端处于同一节车厢内。In this embodiment of the present invention, the RSRP value difference between the paired terminals is greater than 3dB, which can prevent the distance between the paired terminals from not meeting the isolation requirement due to the occasional movement of the terminals. For example, the terminal is in the same carriage due to occasional movement. Inside.

另外，为了满足MU-MIMO数据传输信道具有一定隔离度同时尽量接近，在对终端进行配对时，可以选择RSRP值差值大于3dB且小于10dB的终端进行配对。In addition, in order to ensure that the MU-MIMO data transmission channels have a certain degree of isolation and are as close as possible, when pairing terminals, terminals with an RSRP value difference greater than 3dB and less than 10dB can be selected for pairing.

也就是说，本发明实施例中，配对的条件有：两个终端同时传输业务、信道环境接近(RSRP差值＜10dB)和终端位置满足隔离度要求(所属分组至少相差M个且RSRP差值＞3dB)。That is to say, in the embodiment of the present invention, the pairing conditions are: two terminals transmit services at the same time, the channel environment is close (RSRP difference < 10 dB), and the terminal location meets the isolation requirement (at least M difference between the groups and RSRP difference) >3dB).

本发明实施例中，在根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组之后，基站给每一个终端标记其所属的分组的分组标识(groupID)。对于高铁专网场景，若不重新进行分组，则基站给每一个终端标记的分组标识在高铁不同小区间不变，终端出高铁小区进入普通大网小区后重置。In the embodiment of the present invention, after the multiple terminals are grouped according to the passing order according to the signal change information when the multiple terminals pass through the transceiver points of the base station in sequence, the base station marks each terminal as a grouping of the group to which it belongs. Identifier (groupID). For the high-speed rail private network scenario, if the grouping is not performed again, the grouping identifier marked by the base station for each terminal remains unchanged between different high-speed rail cells, and the terminal resets after leaving the high-speed rail cell and entering the ordinary large network cell.

所述终端的标识信息，该标识信息具体可以是所述终端所属的分组标识+终端标识；The identification information of the terminal, the identification information may specifically be the group identification to which the terminal belongs + the terminal identification;

所述终端所属的所述分组的信息，具体包括所述终端所属的分组的分组标识(groupID)，若不重新进行分组，该分组标识在整个高铁小区适用；The information of the group to which the terminal belongs, specifically includes the group ID (groupID) of the group to which the terminal belongs. If the grouping is not performed again, the group ID is applicable to the entire high-speed rail community;

所述分组的配对信息；pairing information of the group;

所述终端的配对信息，具体可以包括当前配对终端的小区无线网络临时标识(Cell-Radio Network Temporary Identifier，C-RNTI)信息(也可以称为终端历史配对标识，或简称为配对标识)，该配对标识在一个基站的多个收发点的合并小区(也即一个基站的小区)内适用，小区切换时需要更新；The pairing information of the terminal may specifically include the Cell-Radio Network Temporary Identifier (C-RNTI) information of the currently paired terminal (also referred to as the terminal historical pairing identifier, or simply referred to as the pairing identifier), which The pairing identifier is applicable in the combined cell of multiple transceiver points of one base station (that is, the cell of one base station), and needs to be updated during cell handover;

对于高铁之类的特殊场景，终端位置相对固定，不同于大网需要实时匹配终端，一次匹配之后可以通知下一基站配对信息，从而可以降低配对频率。For special scenarios such as high-speed rail, the location of the terminal is relatively fixed. Unlike the large network, which needs to match the terminal in real time, after one match, the next base station can be notified of the pairing information, thereby reducing the pairing frequency.

所述终端所属的所述分组的信息，具体可以是所述终端所属分组的分组标识与所述终端的C-RNTI信息的映射关系，发生小区切换时，目标小区采用新的C-RNTI替换掉终端历史信息中老的C-RNTI，并更新分组标识和C-RNTI的映射关系传递给下一小区，依次更新。The information of the group to which the terminal belongs may specifically be the mapping relationship between the group identifier of the group to which the terminal belongs and the C-RNTI information of the terminal. When a cell handover occurs, the target cell replaces it with a new C-RNTI. The old C-RNTI in the terminal history information is updated and the mapping relationship between the group identifier and the C-RNTI is transferred to the next cell, and updated in sequence.

对于当前配对的终端，可以标记配对标识，下次传输优先配对。For the currently paired terminal, the pairing identifier can be marked, and the pairing will be prioritized in the next transmission.

另外，如果配对终端传输过程中，其中一个终端发生变化，例如无业务传输，则在其所属分组内选择其他终端与另一终端进行配对。In addition, if one of the terminals changes during the transmission process of the paired terminals, for example, there is no service transmission, other terminals in the group to which it belongs are selected for pairing with another terminal.

也即，本发明实施例中的终端配对方式为半静态配对方式，或称为半固定配对方式，不仅可以满足配对传输要求，还可以降低配对频率。That is, the terminal pairing method in the embodiment of the present invention is a semi-static pairing method, or a semi-fixed pairing method, which can not only meet the pairing transmission requirements, but also reduce the pairing frequency.

其中，当前配对终端的C-RNTI信息在高铁同一小区(基站)不同收发点之间不变，在小区切换后更新。该当前配对终端的C-RNTI信息需要与分组标识一起采用映射关系通过X2接口由原小区传递给目标小区。小区切换完成后，通过终端携带的终端历史信息(UEhistory Information)关联至新小区的C-RNTI信息，采用相同的映射关系，与原分组标识更新新的映射关系至新小区的C-RNTI信息。The C-RNTI information of the currently paired terminal remains unchanged between different transceiver points in the same cell (base station) of the high-speed rail, and is updated after cell handover. The C-RNTI information of the currently paired terminal needs to be transmitted from the original cell to the target cell through the X2 interface using a mapping relationship together with the group identifier. After the cell handover is completed, the terminal history information (UEhistory Information) carried by the terminal is associated with the C-RNTI information of the new cell, and the same mapping relationship is used to update the new mapping relationship with the original group identity to the C-RNTI information of the new cell.

当然，所述终端的配对信息中，也可以定义当前配对终端的终端标识为分组标识(groupID)+终端标识(UEID)，该当前配对终端的终端标识同分组标识，若不重新进行分组，在高铁不同小区间不变，终端出高铁小区进入普通大网小区后重置。Of course, in the pairing information of the terminal, the terminal identifier of the currently paired terminal may also be defined as a group identifier (groupID) + a terminal identifier (UEID). The terminal identifier of the currently paired terminal is the same as the group identifier. The high-speed rail does not change between different cells, and the terminal resets after leaving the high-speed rail cell and entering the ordinary large network cell.

其中一种可选的具体实施方式中，所述第一信息可以包括：至少一个潜在配对终端集合(集合A)的集合，且每个潜在配对终端集合(集合A)包括至少一个终端组(集合B)，每个终端组(集合B)至少包括一个终端。在集合A中，每个终端组(集合B)中的不同终端不适合做MU配对；属于不同终端组(集合B)中的终端可尝试做MU配对。例如，不妨设每节车厢有2个终端，隔1节车厢的终端适合MU配对，则In an optional specific implementation manner, the first information may include: a set of at least one potential paired terminal set (set A), and each potential paired terminal set (set A) includes at least one terminal group (set B), each terminal group (set B) includes at least one terminal. In set A, different terminals in each terminal group (set B) are not suitable for MU pairing; terminals belonging to different terminal groups (set B) can try to do MU pairing. For example, suppose that each car has 2 terminals, and the terminals every other car are suitable for MU pairing, then

集合A1＝{B1{1,2}，B2{5,6}，B3{9,10}}Set A1 = {B1{1,2}, B2{5,6}, B3{9,10}}

集合A2＝{B4{3,4}，B5{7,8}，B6{11,12}}；其中，1、2、3……表示按照经过基站的收发点的次序排序的终端。A set A2={B4{3,4}, B5{7,8}, B6{11,12}}; wherein, 1, 2, 3, .

通过X2接口的终端历史信息(UE history Information)，将所述第一信息传递给下一基站。The first information is delivered to the next base station through the terminal history information (UE history Information) of the X2 interface.

其中，X2接口为基站之间的接口。当然，所述第一信息也可以通过其他方式传递给下一基站。The X2 interface is an interface between base stations. Of course, the first information can also be transmitted to the next base station in other ways.

本发明实施例中，终端历史信息中携带历史配对终端，具体是最新的配对终端的C-RNTI信息，在新小区根据新分配的C-RNTI信息更新，可以实现优先配对原有终端。In the embodiment of the present invention, the terminal history information carries the historical paired terminal, specifically the C-RNTI information of the latest paired terminal, and is updated in the new cell according to the newly allocated C-RNTI information, so that the original terminal can be preferentially paired.

其中，所述交通工具可以是高铁或地铁之类的大规模运载工具。Wherein, the vehicle may be a large-scale delivery vehicle such as a high-speed rail or a subway.

本发明实施例中，在高铁专网之类的特殊场景下，高铁行驶过程中可以不需要更新分组，也即不需要重新进行分组，只需要更新上下车终端即可，具体的，下车终端根据小区类型重置，上车终端根据前一个过杆终端标记相同分组信息。In the embodiment of the present invention, in a special scenario such as a high-speed rail private network, the grouping does not need to be updated during the high-speed rail running, that is, the grouping does not need to be re-grouped, and only the alighting terminal needs to be updated. Specifically, the alighting terminal Reset according to the cell type, and the boarding terminal marks the same grouping information according to the previous pole passing terminal.

进一步可选的，所述在所述分组内增加上车的第一终端的步骤包括：Further optionally, the step of adding the first terminal on board in the grouping includes:

也即，本发明实施例中，对于新上车的终端，在不重新进行分组的情况下，可以根据前一个过杆终端标记相同分组信息。That is, in this embodiment of the present invention, for a terminal newly getting on the vehicle, the same grouping information can be marked according to the previous terminal passing the pole without re-grouping.

本发明实施例中，对于高铁场景，在高铁驶出始发站，基站根据终端经过高铁专网基站的第一个收发点时的信号变化信息对高铁上的多个终端进行分组和配对后，在高铁行驶过程中可以不需要重新进行分组，只需要更新上下车终端即可。但是，在高铁行驶过程中也可以重新进行分组和配对，也即更新分组和配对标识，具体的，可以在满足配对更新触发条件时重新进行分组和配对。当然，如果终端切换至非高铁小区则重置中分组标识和配对标识。In the embodiment of the present invention, for the high-speed rail scenario, after the high-speed rail leaves the originating station, the base station groups and pairs multiple terminals on the high-speed rail according to the signal change information when the terminal passes through the first transceiver point of the high-speed rail private network base station, In the process of high-speed rail driving, it is not necessary to regroup, only need to update the terminal for getting on and off. However, the grouping and pairing can also be performed again during the high-speed rail running, that is, the grouping and pairing identifiers can be updated. Specifically, the grouping and pairing can be performed again when the pairing update trigger condition is satisfied. Of course, if the terminal switches to a non-high-speed rail cell, the middle group identification and pairing identification are reset.

进一步可选的，所述配对更新触发条件包括以下至少之一：Further optionally, the pairing update trigger condition includes at least one of the following:

小区更新；community update;

也即，本发明实施例中，可以在小区更新时，即小区切换时重新进行分组和配对，也可以周期性更新分组和配对，还可以每经过一个收发点就更新分组和配对(即过杆就更新)。That is, in this embodiment of the present invention, grouping and pairing may be performed again during cell update, that is, during cell handover, grouping and pairing may be updated periodically, and grouping and pairing may be updated every time a transceiver point passes through (that is, over-bar). update it).

将小区更新作为配对更新触发条件时，一个基站的各个收发点形成的合并小区(也即一个基站的小区)内，配对信息相同。将小区更新作为配对更新触发条件时，在高铁全线不需要传输各个终端的分组信息，也不需要传输终端的配对信息。When the cell update is used as the triggering condition for pairing update, the pairing information is the same in the combined cell formed by each transceiver point of one base station (that is, the cell of one base station). When the cell update is used as the triggering condition for the pairing update, it is not necessary to transmit the grouping information of each terminal, nor the pairing information of the terminal, on the entire high-speed rail line.

对于高铁场景，高铁两站之间最小间隔30分钟，满足上下车用户需求，因此，更新周期可以设置为30分钟。当然，更新周期也可以设置为其他时长，此处不做限定。For high-speed rail scenarios, the minimum interval between two high-speed rail stations is 30 minutes to meet the needs of users getting on and off the train. Therefore, the update period can be set to 30 minutes. Of course, the update period may also be set to other durations, which are not limited here.

另外，上述配对更新触发条件可以组合使用，例如小区更新和周期性更新的组合，如果当前时刻距离上一次更新的时刻已经达到一个更新周期，那么如果发生小区切换，则更新分组和配对。In addition, the above pairing update trigger conditions can be used in combination, such as a combination of cell update and periodic update. If the current time has reached an update period from the last update time, then if cell handover occurs, the grouping and pairing are updated.

请参阅图2，图2是本发明实施例提供的一种基站的结构示意图，该基站20包括：Please refer to FIG. 2. FIG. 2 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station 20 includes:

分组模块21，用于根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组；The grouping module 21 is configured to group the plurality of terminals according to the passing order according to the signal change information when the plurality of terminals pass through the transceiver points of the base station in sequence;

分组配对模块22，用于对得到的分组中的第一分组和第二分组做配对；Grouping pairing module 22, for pairing the first grouping and the second grouping in the obtained grouping;

终端配对模块23，用于对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对；a terminal pairing module 23, configured to select the terminal in the second group for pairing for the terminal in the first group;

可选的，所述分组模块21包括：Optionally, the grouping module 21 includes:

可选的，所述终端配对模块23包括：Optionally, the terminal pairing module 23 includes:

所述终端的标识信息；the identification information of the terminal;

所述分组的配对信息；pairing information of the group;

所述终端的配对信息；pairing information of the terminal;

可选的，所述增加模块包括：Optionally, the adding module includes:

可选的，所述分组模块21，用于若满足配对更新触发条件，则根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组；所述分组配对模块22，用于对得到的分组中的第一分组和第二分组做配对；所述终端配对模块23，用于对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对。Optionally, the grouping module 21 is configured to, if the pairing update trigger condition is met, group the multiple terminals in the order of passing according to the signal change information when the multiple terminals pass through the transceiver points of the base station in sequence; The grouping pairing module 22 is used for pairing the first grouping and the second grouping in the obtained grouping; the terminal pairing module 23 is used for selecting the first grouping for the terminal in the first grouping. The terminals in the two groups are paired.

小区更新；community update;

本发明实施例是与上述方法实施例对应的产品实施例，故在此不再赘述，详细请参阅上述实施例。The embodiments of the present invention are product embodiments corresponding to the foregoing method embodiments, and thus are not repeated here, and please refer to the foregoing embodiments for details.

请参阅图3，图3是本发明实施例提供的一种基站的结构示意图，该基站30包括：收发器31和处理器32；Please refer to FIG. 3. FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station 30 includes: a transceiver 31 and a processor 32;

所述处理器32，用于根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组；The processor 32 is configured to group the plurality of terminals according to the passing order according to the signal change information when the plurality of terminals pass through the transceiver points of the base station in sequence;

所述处理器32，还用于对得到的分组中的第一分组和第二分组做配对；The processor 32 is further configured to pair the first grouping and the second grouping in the obtained grouping;

所述处理器32，还用于对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对；The processor 32 is further configured to, for the terminals in the first group, select the terminals in the second group for pairing;

可选的，所述处理器32，用于根据所述终端的个数进行分组，对经过所述收发点的所述终端进行计数，每N个所述终端作为一个所述分组，N为正整数；或者，Optionally, the processor 32 is configured to group according to the number of the terminals, count the terminals passing through the transceiver point, and each N of the terminals is used as one of the groups, and N is a positive value. Integer; or,

所述处理器32，用于根据所述终端经过所述收发点的时间对所述终端进行分组，每T时间段内经过所述收发点的所述终端作为一个所述分组，T大于零；或者，The processor 32 is configured to group the terminals according to the time when the terminal passes the transceiver point, and the terminal passing through the transceiver point in every T time period is regarded as one of the groups, and T is greater than zero; or,

所述处理器32，用于根据所述终端的个数和所述终端经过所述收发点的时间对所述终端进行分组。The processor 32 is configured to group the terminals according to the number of the terminals and the time when the terminals pass the sending and receiving point.

可选的，所述处理器32，用于若T时间段内经过所述收发点的所述终端的个数不足N个，则以T时间段经过所述收发点的所述终端为一个所述分组，并重新开始计时、计数；若经过所述收发点的所述终端的个数已满N个但距离计数开始的时间不足T时间，则以N个所述终端作为一个所述分组，并重新开始计时、计数。Optionally, the processor 32 is configured to, if the number of the terminals passing through the sending and receiving point in the T time period is less than N, take the terminal passing through the sending and receiving point in the T time period as one of the terminals. said grouping, and restart timing and counting; if the number of said terminals passing through said sending and receiving point is full N but the time from the start of counting is less than T time, then N said terminals are used as one said grouping, And restart timing and counting.

可选的，所述处理器32，用于选择所述第二分组内参考信号接收功率与目标终端的差值大于3dB的终端，与目标终端做配对；或者，选择所述第二分组内参考信号接收功率与目标终端的差值大于3dB且小于10dB的所述终端，与目标终端做配对；Optionally, the processor 32 is configured to select a terminal whose difference between the received power of the reference signal in the second group and the target terminal is greater than 3dB, and pair with the target terminal; or, select the reference signal in the second group. The terminal whose difference between the received signal power and the target terminal is greater than 3dB and less than 10dB is paired with the target terminal;

可选的，所述收发器31，用于将第一信息传递给下一基站，所述第一信息包括以下信息中的至少之一：Optionally, the transceiver 31 is configured to transmit first information to the next base station, where the first information includes at least one of the following information:

所述终端的标识信息；the identification information of the terminal;

所述分组的配对信息；pairing information of the group;

所述终端的配对信息；pairing information of the terminal;

可选的，所述收发器31，用于通过X2接口的终端历史信息，将所述第一信息传递给下一基站。Optionally, the transceiver 31 is configured to transmit the first information to the next base station through the terminal history information of the X2 interface.

可选的，所述终端为同一交通工具内的终端，所述处理器32，还用于删除所述分组内下车的所述终端；和/或，在所述分组内增加上车的第一终端。Optionally, the terminal is a terminal in the same vehicle, and the processor 32 is further configured to delete the terminal that gets off the vehicle in the group; and/or, add the first terminal that gets on the vehicle in the group. a terminal.

可选的，所述处理器32，还用于在根据所述第一终端的信号变化信息判断所述第一终端经过所述基站的收发点之后，将所述第一终端添加进第二终端所在的分组，所述第二终端为在所述第一终端之前上一个经过所述基站的收发点的所述终端。Optionally, the processor 32 is further configured to add the first terminal to the second terminal after judging that the first terminal passes through the transceiver point of the base station according to the signal change information of the first terminal The second terminal is the last terminal that passed through the transceiver point of the base station before the first terminal.

可选的，所述处理器32，用于若满足配对更新触发条件，则根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组；对得到的分组中的第一分组和第二分组做配对；对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对。Optionally, the processor 32 is configured to, if the pairing update trigger condition is satisfied, group the multiple terminals in the order of passing according to the signal change information when the multiple terminals pass through the transceiver points of the base station in sequence; The first group and the second group in the obtained group are paired; for the terminal in the first group, the terminal in the second group is selected for pairing.

小区更新；community update;

请参阅图4，图4是本发明实施例提供的一种基站的结构示意图，该基站40包括处理器41、存储器42及存储在所述存储器42上并可在所述处理器41上运行的程序；所述处理器41执行所述程序时实现如下步骤：Please refer to FIG. 4 . FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station 40 includes a processor 41 , a memory 42 , and a processor 41 stored in the memory 42 and running on the processor 41 . program; the processor 41 implements the following steps when executing the program:

可选的，所述处理器41执行所述程序时还可实现如下步骤：Optionally, the processor 41 may further implement the following steps when executing the program:

所述根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组的步骤包括：The step of grouping the plurality of terminals according to the passing order according to the signal change information when the plurality of terminals pass through the transceiver points of the base station in sequence includes:

所述根据所述终端的个数和所述终端经过所述收发点的时间对所述终端进行分组的步骤包括：The step of grouping the terminals according to the number of the terminals and the time when the terminals pass the transceiver point includes:

所述对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对的步骤包括：For the terminal in the first group, the step of selecting the terminal in the second group for pairing includes:

所述对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对的步骤之后，还包括：After the step of selecting the terminal in the second group for pairing with respect to the terminal in the first group, the method further includes:

所述终端的标识信息；the identification information of the terminal;

所述分组的配对信息；pairing information of the group;

所述终端的配对信息；pairing information of the terminal;

所述将第一信息传递给下一基站的步骤包括：The step of delivering the first information to the next base station includes:

可选的，所述终端为同一交通工具内的终端，所述处理器41执行所述程序时还可实现如下步骤：Optionally, the terminal is a terminal in the same vehicle, and the processor 41 may further implement the following steps when executing the program:

所述根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组的步骤之后，还包括：After the step of grouping the plurality of terminals according to the passing order according to the signal change information when the plurality of terminals pass through the transceiver points of the base station in sequence, the method further includes:

所述在所述分组内增加上车的第一终端的步骤包括：The step of adding the first terminal on board in the grouping includes:

所述根据多个终端依次经过所述基站的收发点时的信号变化信息，按照经过次序对所述多个终端进行分组；对得到的分组中的第一分组和第二分组做配对；对于所述第一分组内的所述终端，选择所述第二分组内的所述终端做配对的步骤包括：According to the signal change information when the multiple terminals pass through the transceiver point of the base station in sequence, the multiple terminals are grouped according to the passing order; the first group and the second group in the obtained group are paired; the terminal in the first group, the step of selecting the terminal in the second group for pairing includes:

小区更新；community update;

本发明实施例的具体工作过程与上述方法实施例中的一致，故在此不再赘述，详细请参阅上述实施例中方法步骤的说明。The specific working process of the embodiment of the present invention is the same as that in the foregoing method embodiment, so it is not repeated here. For details, please refer to the description of the method steps in the foregoing embodiment.

本发明实施例提供一种可读存储介质，其上存储有程序，该程序被处理器执行时实现上述实施例一中任一种MU-MIMO中的终端配对方法中的步骤。详细请参阅以上对应实施例中方法步骤的说明。An embodiment of the present invention provides a readable storage medium on which a program is stored, and when the program is executed by a processor, implements the steps in any one of the above-mentioned methods for pairing terminals in MU-MIMO in the first embodiment. For details, please refer to the description of the method steps in the above corresponding embodiments.

本发明实施例中的基站可以是全球移动通讯(Global System of Mobilecommunication，简称GSM)或码分多址(Code Division Multiple Access，简称CDMA)中的基站(Base Transceiver Station，简称BTS)，也可以是宽带码分多址(Wideband CodeDivision Multiple Access，简称WCDMA)中的基站(NodeB，简称NB)，还可以是LTE中的演进型基站(Evolutional Node B，简称eNB或eNodeB)，或者中继站或接入点，或者未来5G网络中的基站等，在此并不限定。The base station in this embodiment of the present invention may be a base station (Base Transceiver Station, BTS for short) in Global System of Mobile communication (GSM for short) or Code Division Multiple Access (CDMA for short), or A base station (NodeB, NB for short) in Wideband Code Division Multiple Access (WCDMA for short), an evolved base station (Evolutional Node B, eNB or eNodeB for short) in LTE, or a relay station or access point , or the base station in the future 5G network, etc., which are not limited here.

本发明实施例中的终端可以是无线终端也可以是有线终端，无线终端可以是指向用户提供语音和/或其他业务数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(Radio Access Network，简称RAN)与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(Personal Communication Service，简称PCS)电话、无绳电话、会话发起协议(SessionInitiation Protocol，简称SIP)话机、无线本地环路(Wireless Local Loop，简称WLL)站、个人数字助理(Personal Digital Assistant，简称PDA)等设备。无线终端也可以称为系统、订户单元(Subscriber Unit)、订户站(Subscriber Station)，移动站(MobileStation)、移动台(Mobile)、远程站(Remote Station)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终端(User Terminal)、用户代理(User Agent)、终端(UserDevice or User Equipment)，在此不作限定。The terminal in this embodiment of the present invention may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or other service data connectivity to a user, a handheld device with a wireless connection function, or a wireless modem connected to other processing equipment. A wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), and the wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a mobile phone Computers, for example, may be portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange language and/or data with the wireless access network. For example, a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (Personal Digital Assistant) Assistant, referred to as PDA) and other devices. A wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, an access A terminal (Access Terminal), a user terminal (User Terminal), a user agent (User Agent), and a terminal (UserDevice or User Equipment) are not limited here.

上述可读存储介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。The above-mentioned readable storage media, including persistent and non-permanent, removable and non-removable media, can be implemented by any method or technology for information storage. Information may be computer readable instructions, data structures, modules of programs, or other data. Examples of storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM) ), Electrically Erasable Programmable Read Only Memory (EEPROM), Flash Memory or other memory technology, Compact Disc Read Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, magnetic cartridges Magnetic tape, magnetic tape storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a computing device.

以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims

1. A terminal pairing method in MU-MIMO, applied to a base station, is characterized in that, comprising:

According to the signal change information when the multiple terminals pass through the transceiver point of the base station in sequence, the multiple terminals are grouped according to the passing order;

Pairing the first grouping and the second grouping in the obtained grouping;

For the terminal in the first group, select the terminal in the second group for pairing;

Wherein, the first group and the second group are separated by at least M groups, and M is a preset value and a positive integer.

2 . The method according to claim 1 , wherein the signal change information is: change information that the received power of the reference signal gradually increases and then begins to decrease, or the change of the frequency offset from negative offset to positive offset. 3 . information.

3. The method according to claim 1, wherein the step of grouping the plurality of terminals according to the passing order according to the signal change information when the plurality of terminals pass through the transceiver points of the base station in sequence comprises:

Grouping is performed according to the number of the terminals, the terminals passing through the transceiver point are counted, each N of the terminals is regarded as one of the groups, and N is a positive integer; or,

The terminals are grouped according to the time when the terminal passes the transceiver point, and the terminal passing through the transceiver point in every T time period is regarded as one of the groups, and T is greater than zero; or,

The terminals are grouped according to the number of the terminals and the time when the terminals pass the transceiver point.

4. The method according to claim 3, wherein the step of grouping the terminals according to the number of the terminals and the time when the terminals pass the transceiver point comprises:

If the number of the terminals passing through the sending and receiving point in the T time period is less than N, the terminal passing through the sending and receiving point in the T time period is regarded as one of the groupings, and the timing and counting are restarted;

If the number of the terminals passing through the sending and receiving point is full N but the time from the start of counting is less than T time, the N terminals are taken as one of the grouping, and the timing and counting are restarted.

5. The method according to claim 1, wherein, for the terminals in the first group, the step of selecting the terminals in the second group for pairing comprises:

Select a terminal whose difference between the received power of the reference signal in the second group and the target terminal is greater than 3dB, and pair with the target terminal; or,

selecting the terminal whose difference between the received power of the reference signal in the second group and the target terminal is greater than 3dB and less than 10dB, and pairing with the target terminal;

Wherein, the target terminal is the terminal in the first group.

6 . The method according to claim 1 , wherein, after the step of selecting the terminals in the second group for pairing for the terminals in the first group, the method further comprises: 7 .

Transfer first information to the next base station, where the first information includes at least one of the following information:

the identification information of the terminal;

information about the group to which the terminal belongs;

pairing information of the group;

pairing information of the terminal;

Wherein, the next base station is an adjacent base station determined according to the moving direction of the terminal.

7. The method according to claim 6, wherein the step of transmitting the first information to the next base station comprises:

The first information is transmitted to the next base station through the terminal history information of the X2 interface.

8 . The method according to claim 1 or 6 , wherein the terminal is a terminal in the same vehicle, and according to the signal change information when multiple terminals pass through the transceiver points of the base station in sequence, according to the passing After the step of sequentially grouping the plurality of terminals, the method further includes:

delete the terminal that gets off in the group; and/or,

The first terminal that gets on the bus is added to the group.

9. The method according to claim 8, wherein the step of adding the first terminal to get on the vehicle in the grouping comprises:

After judging that the first terminal passes through the transceiver point of the base station according to the signal change information of the first terminal, the first terminal is added to the group where the second terminal is located, and the second terminal is located in the base station. The terminal that passed through the transceiver point of the base station last before the first terminal.

10 . The method according to claim 1 , wherein, according to the signal change information when multiple terminals pass through the transceiver point of the base station in sequence, the multiple terminals are grouped according to the passing order; The first group and the second group in the group are paired; for the terminal in the first group, the step of selecting the terminal in the second group for pairing includes:

If the pairing update trigger condition is satisfied, then according to the signal change information when the multiple terminals pass through the transceiver point of the base station in sequence, the multiple terminals are grouped according to the passing order; For the terminal in the first group, select the terminal in the second group for pairing.

11. The method according to claim 10, wherein the pairing update triggering condition comprises at least one of the following:

community update;

The time since the last update has reached an update cycle;

It is determined that the terminal passes through a new transceiver point of the base station.

12. A base station, comprising:

a grouping module, configured to group the plurality of terminals according to the passing order according to the signal change information when the plurality of terminals pass through the transceiver points of the base station in sequence;

grouping pairing module, for pairing the first grouping and the second grouping in the obtained grouping;

a terminal pairing module, configured to select the terminal in the second group for pairing with respect to the terminal in the first group;

Wherein, the first group and the second group are separated by at least M groups, and M is a preset value and is a positive integer.

13. A base station, comprising: a transceiver and a processor;

The processor is configured to group the plurality of terminals according to the passing order according to the signal change information when the plurality of terminals pass through the transceiver points of the base station in sequence;

The processor is further configured to pair the first grouping and the second grouping in the obtained grouping;

The processor is further configured to, for the terminals in the first group, select the terminals in the second group for pairing;

14. A base station, comprising a memory, a processor, and a program stored on the memory and executable on the processor; characterized in that, when the processor executes the program, the implementation of claims 1 to 11 The steps in any one of the terminal pairing methods in MU-MIMO.

15. A readable storage medium on which a program is stored, characterized in that, when the program is executed by a processor, one of the methods for pairing a terminal in MU-MIMO according to any one of claims 1 to 11 is implemented. step.