WO2023109947A1 - 上下行非对称通信mimo***的劈裂波束管理方法及*** - Google Patents

上下行非对称通信mimo***的劈裂波束管理方法及*** Download PDF

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WO2023109947A1
WO2023109947A1 PCT/CN2022/139588 CN2022139588W WO2023109947A1 WO 2023109947 A1 WO2023109947 A1 WO 2023109947A1 CN 2022139588 W CN2022139588 W CN 2022139588W WO 2023109947 A1 WO2023109947 A1 WO 2023109947A1
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downlink
user terminal
uplink
cell
beam management
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PCT/CN2022/139588
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English (en)
French (fr)
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沈阳
阳堃
赖峥嵘
胡晶晶
李永军
朱伏生
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广东省新一代通信与网络创新研究院
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Publication of WO2023109947A1 publication Critical patent/WO2023109947A1/zh

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    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection

Definitions

  • the present disclosure relates to the technical field of wireless communication, and in particular to a split beam management method and system of an uplink and downlink asymmetric communication MIMO system.
  • the beamforming technology used in the massive MIMO system is an antenna-based signal preprocessing method.
  • the amplitude, phase and weight of each element in the antenna array can be adjusted to make the beam in a specific Coherent superposition is performed in the direction to realize the transition from omnidirectional transmission to directional transmission of signals, which can effectively suppress interference.
  • each array element in the antenna array needs to be independently controlled, but this method has high requirements for baseband processing, and the existing commercial application conditions cannot meet the requirements of the full digital architecture for each array element independently. Control, in order to solve this problem, a digital-analog hybrid antenna architecture has been proposed.
  • the downlink transmitting end needs to transmit the beam for beam scanning, and the uplink receiving end needs to perform channel estimation on the user, and determine the position of the user according to the user's channel information, so as to determine the direction of the downlink transmitting beam.
  • Figure 2 of the specification shows the prior art A schematic flowchart of a beam management method for an uplink and downlink asymmetric communication MIMO system.
  • the phase shifter is used to weight the antenna elements. Since one gear position of the phase shifter corresponds to one beam direction, there are certain restrictions on the switching of the phase shifter gear positions, and only certain gear positions can be switched at fixed time intervals.
  • the beam management scheme in this case is: during downlink beam scanning, switch the gears of the phase shifter and perform beam scanning in a fixed direction; when performing uplink channel estimation, switch all the gears of the phase shifter to perform channel estimation respectively.
  • phase shifter phase switching needs to traverse all gears, the total time required for switching is long, and it is impossible to switch to the user accurately and quickly;
  • the uplink and downlink channels will be non-reciprocal, and the current technology lacks a beam management method for non-reciprocal channels.
  • the purpose of the present disclosure is to provide a split beam management method and system for an uplink and downlink asymmetric communication MIMO system, which can solve one or more of the above-mentioned problems in the prior art.
  • a split beam management method for an uplink and downlink asymmetric communication MIMO system including the following steps,
  • the downlink transmitter is divided into n radio frequency channels for beamforming, so that one sector is split into n cells;
  • the n cell base stations When the user terminal accesses, the n cell base stations all receive the SRS signal sent by the user terminal, and determine the cell where the user terminal is located according to the energy intensity of the SRS signal received by each cell base station;
  • the downlink sending end performs beam scanning, and the user terminal determines and receives the best beam direction sent by the downlink sending end.
  • the downlink transmitting end uses a single beam to perform beam scanning.
  • a split beam management system for an uplink and downlink asymmetric communication MIMO system which is used to implement any of the above split beam management methods for an uplink and downlink asymmetric communication MIMO system, including:
  • the sector splitting unit is used to divide the downlink transmitting end into n radio frequency channels for beamforming respectively in the digital-analog hybrid antenna architecture, so that one sector is split into n cells;
  • the beam management unit is used to enable the n cell base stations to receive the SRS signals sent by the user terminal when the user terminal accesses; to determine the cell where the user terminal is located according to the energy intensity of the SRS signals received by the base stations of each cell; in the user terminal In the cell where the downlink transmitter is located, the downlink transmitter is ordered to perform beam scanning, so that the user terminal can determine and receive the best beam direction sent by the downlink transmitter.
  • the downlink transmitting end uses a single beam to perform beam scanning.
  • a device which includes a processor and a memory, at least one instruction, at least one section of program, code set or instruction set are stored in the memory, at least one instruction, at least one section of program or instruction set is loaded by the processor and Execute to realize any one of the above-mentioned methods of the present invention.
  • a computer-readable storage medium is provided. At least one instruction, at least one program, code set or instruction set is stored in the computer-readable storage medium, and at least one instruction, at least one program, code set or instruction set is processed by The device is loaded and executed to implement any of the above-mentioned methods of the present invention.
  • the split beam management method and system of the uplink and downlink asymmetric communication MIMO system provided by the present disclosure increase the number of cells by cutting the space of each sector of the base station, so that the downlink beam scanning does not need to traverse all gears, reducing beam scanning time; effective user pairing and resource allocation, not strongly dependent on the accuracy of SRS channel estimation, with limited channel information input, system capacity and performance are improved, and delay is reduced; the implementation method is simple, and the efficiency of beam management is improved efficiency.
  • FIG. 1 is a flow chart of a split beam management method for an uplink and downlink asymmetric communication MIMO system provided by an embodiment of the present disclosure.
  • FIG. 2 is a schematic flow chart of a beam management method for an uplink and downlink asymmetric communication MIMO system in the prior art.
  • FIG. 3 is a schematic diagram of a downlink transmitting end in a split beam management method for an uplink and downlink asymmetric communication MIMO system provided by an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of an uplink receiving end in a split beam management method for an uplink and downlink asymmetric communication MIMO system provided by an embodiment of the present disclosure.
  • Fig. 5 is a schematic diagram of a horizontal plane of a sector of a base station.
  • FIG. 6 is a schematic diagram of a horizontal plane after a sector is split into n cells.
  • FIG. 7 is a schematic structural diagram of a split beam management system of an uplink and downlink asymmetric communication MIMO system provided by another embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a split beam management device of an uplink and downlink asymmetric communication MIMO system provided by another embodiment of the present disclosure.
  • a split beam management method for an uplink and downlink asymmetric communication MIMO system including the following steps:
  • Step 1 In the digital-analog hybrid antenna architecture, the downlink transmitter is divided into n radio frequency channels for beamforming, so that one sector is split into n cells;
  • Step 2 when the user terminal accesses, n cell base stations all receive the SRS signal sent by the user terminal, and determine the cell where the user terminal is located according to the energy intensity of the SRS signal received by each cell base station;
  • Step 3 In the cell where the user terminal is located, the downlink transmitter performs beam scanning, and the user terminal determines and receives the best beam direction sent by the downlink transmitter.
  • a three-sector structure is often used.
  • the horizontal plane diagram of each sector refer to Figure 5 of the manual.
  • the energy received by the user terminal will be different. There will be interference within the sector.
  • step 1 after a sector is split into n cells, its horizontal schematic diagram is shown in Figure 6 of the specification. Therefore, in a large-scale digital-analog hybrid antenna architecture, the beamforming can generate narrower beams by dividing the downlink transmitting end into n radio frequency channels for beamforming respectively.
  • step 2 the base stations of each cell determine the cell where the user terminal is located according to the energy intensity of the received SRS signal.
  • step 3 after splitting, the downlink transmitters of the base stations in each cell cover the entire cell by scanning different angles sequentially, so that the directional transmission SSB beam (signal synchronization module beam) performs beam scanning.
  • the SSB beam may be used to identify the initial transmission direction of the beam sent by the user terminal and perform beam tracking.
  • the SSB beam corresponding to each cell is a single beam.
  • the base stations in each cell send SSB beams using beams wider than those obtained by full digital beamforming, thereby reducing the impact of SSB transmission and ensuring timely network access operations.
  • the base station of the cell when multiple user terminals access the same cell, the base station of the cell satisfies the requirements of the user terminals in descending order according to the energy intensity of the received SRS signal. Specifically, for example, the cell base station receives the signal energies of user 1, user 2, and user 3 as Re1, Re2, and Re3 respectively, and Re1>Re2>Re3, so the base station firstly meets the service demand of user 1.
  • the user terminal uses physical random channels (PARCH) with different widths to access, and the physical random channel adopts a single beam, thereby simplifying the SRS signal (uplink sounding reference signal).
  • PARCH physical random channels
  • the split beam management method of the uplink and downlink asymmetric communication MIMO system provided by the present disclosure increases the number of cells by cutting the space of each sector of the base station, so that the downlink beam scanning does not need to traverse all gears, reducing the beam scanning time ;Effectively perform user pairing and resource allocation without strongly relying on the accuracy of SRS channel estimation. With limited channel information input, the system capacity and performance are improved, and the delay is reduced; the implementation method is simple and the efficiency of beam management is improved.
  • a split beam management system for an uplink and downlink asymmetric communication MIMO system is provided, which is used to perform splitting of any uplink and downlink asymmetric communication MIMO system in the above method embodiments Beam management methods, including,
  • the sector splitting unit 11 is used to divide the downlink transmitting end into n radio frequency channels and perform beamforming respectively in the digital-analog hybrid antenna architecture, so that one sector is split into n cells;
  • the beam management unit 12 is used to enable n cells to receive the SRS signal sent by the user terminal when the user terminal accesses; to determine the cell where the user terminal is located according to the energy intensity of the SRS signal received by each cell; In the cell, the downlink sending end is ordered to perform beam scanning, so that the user terminal can determine the best beam direction sent by the downlink sending end and receive it.
  • the needs of the user terminals are satisfied in order from large to small.
  • the downlink transmitting end uses a single beam to perform beam scanning.
  • the split beam management system of the uplink and downlink asymmetric communication MIMO system provided by the present disclosure increases the number of cells by cutting the space of each sector of the base station, so that the downlink beam scanning does not need to traverse all gears, reducing the beam scanning time ;Effectively perform user pairing and resource allocation without strongly relying on the accuracy of SRS channel estimation. With limited channel information input, the system capacity and performance are improved, and the delay is reduced; the implementation method is simple and the efficiency of beam management is improved.
  • FIG. 8 of the specification shows a schematic structural diagram of a split beam management device for an uplink and downlink asymmetric communication MIMO system provided in Embodiment 3 of the present application.
  • the device includes:
  • One or more processors 31 and memory 32, one processor 31 is taken as an example in FIG. 8 .
  • the memory 32 as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs and modules, such as the uplink and downlink asymmetric communication MIMO system in the embodiment of the present application Program instructions/modules corresponding to the split beam management method.
  • the processor 31 executes various functional applications and data processing of the server by running the non-volatile software programs, instructions and modules stored in the memory 32, that is, realizes the hacking of the uplink and downlink asymmetric communication MIMO system in the above method embodiment. split-beam management approach.
  • the memory 32 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store the split beam management system according to the uplink and downlink asymmetric communication MIMO system use of the created data, etc.
  • the memory 32 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices.
  • the memory 32 may optionally include a memory that is remotely set relative to the processor 31, and these remote memories may be connected to the split beam management system of the uplink and downlink asymmetric communication MIMO system through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • One or more modules are stored in the memory 32, and when executed by one or more processors 31, execute the split beam management method of the uplink and downlink asymmetric communication MIMO system in any of the above method embodiments.
  • Embodiment 4 of the present invention provides a computer-readable storage medium, in which one or more programs including execution instructions are stored, and the execution instructions can be executed by devices (including but not limited to computers, servers, or network devices) etc.) to be read and executed to execute the relevant steps in the above method embodiments.
  • devices including but not limited to computers, servers, or network devices
  • the storage medium may be a read-only memory, a magnetic disk or an optical disk, and the like.

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Abstract

本公开提供了上下行非对称通信MIMO***的劈裂波束管理方法及***，该方法包括：在数模混合天线架构中，将下行发送端分成n个射频通道分别进行波束赋形，使一个扇区劈裂为n个小区；当用户终端接入时，n个小区均接收用户终端发出的SRS信号，根据各小区接收到的SRS信号的能量强度，确定用户终端所在的小区；在用户终端所在的小区内，下行发送端进行波束扫描，用户终端确定下行发送端发送的最佳波束方向并接收。本公开通过对基站的每个扇区空间进行切割，增加小区数量，减少波束扫描的时间；有效的进行用户配对和资源分配，不强依赖SRS信道估计准确性，提升了***容量和***性能，降低时延；实现方法简单，提高了波束管理的效率。

Description

上下行非对称通信MIMO***的劈裂波束管理方法及*** 技术领域
本公开涉及无线通信技术领域，尤其涉及上下行非对称通信MIMO***的劈裂波束管理方法及***。
背景技术
大规模MIMO***中采用的波束赋形技术是一种基于天线信号预处理手段，为了获得更好的阵列增益，可以通过调整天线阵列中每个阵元的幅度、相位和权重，使波束在特定方向上进行相干叠加，实现信号的全向传输到定向传输的转变，可以有效抑制干扰。为了获得较优的性能增益，需要对天线阵列中每个阵元进行独立控制，但是这种方式对基带处理的要求较高，现有商业应用条件下无法满足全数字架构对每个阵元独立控制，为了解决这一问题，人们提出了数模混合的天线架构。
在数模混合的天线架构下，存在多种天线设计方案，以上下行非对称的天线设计方案为例，参考说明书附图3-4，示出了一种天线设计方案，水平8天线阵元，垂直12天线阵元，极化2天线阵元，共192天线阵元。说明书附图3示出了下行发送端的形态，下行使用64基带通道，1通道驱3阵元；说明书附图4示出了上行接收端的形态，上行使用16基带通道，1通道驱12阵元。下行发送端需要发送波束进行波束扫描，上行接收端需要对用户进行信道估计，根据用户的信道信息确定用户的位置，从而确定下行发送波束的方向，参考说明书附图2，示出了现有技术中一种上下行非对称通信MIMO***的波束管理方法的流程示意图。
在这种上下行非对称天线设计方案下，下行发送端进行波束扫描时需要天线内部进行模拟预加权，即通过移相器对天线阵元加权。由于移相器一个档位对应一个波束方向，使移相器档位切换上有一定限制，只能在某几个档位按照固定的时间间隔进行切换。这种情形下的波束管理方案为：下行波束扫描时，切换移相器档位，在固定的方向上进行波束扫描；上行进行信道估计时，切换所有移相器档位，分别进行信道估计。这种方案存在的问题有：
1、波束扫描时，移相器相位切换需要遍历所有档位，所需要的切换总 时间长，无法精准快速地切换到用户；
2、非对称MIMO***由于上下行天线通道数不一致，会导致上下行通道具有非互易性，当前技术中缺少非互易性信道的波束管理方法。
发明内容
本公开的目的是要提供上下行非对称通信MIMO***的劈裂波束管理方法及***，可以解决上述现有技术问题中的一个或者多个。
第一方面，提供了上下行非对称通信MIMO***的劈裂波束管理方法，包括以下步骤，
在数模混合天线架构中，将下行发送端分成n个射频通道分别进行波束赋形，使一个扇区劈裂为n个小区；
当用户终端接入时，n个小区基站均接收用户终端发出的SRS信号，根据各小区基站接收到的SRS信号的能量强度，确定用户终端所在的小区；
在用户终端所在的小区内，下行发送端进行波束扫描，用户终端确定下行发送端发送的最佳波束方向并接收。
在一些实施方式中，当多个用户终端接入同一个小区时，根据接收到的SRS信号的能量强度，由大到小依次满足用户终端的需求。
在一些实施方式中，在用户终端所在的小区内，下行发送端使用单波束进行波束扫描。
第二方面，提供了上下行非对称通信MIMO***的劈裂波束管理***，用于执行上述任一上下行非对称通信MIMO***的劈裂波束管理方法，包括，
扇区劈裂单元，用于在数模混合天线架构中，将下行发送端分成n个射频通道分别进行波束赋形，使一个扇区劈裂为n个小区；
波束管理单元，用于当用户终端接入时，使n个小区基站均接收用户终端发出的SRS信号；根据各小区基站接收到的SRS信号的能量强度，确定用户终端所在的小区；在用户终端所在的小区内，令下行发送端进行波束扫描，以使用户终端能够确定下行发送端发送的最佳波束方向并接收。
在一些实施方式中，当多个用户终端接入同一个小区时，根据接收到的SRS信号的能量强度，由大到小依次满足用户终端的需求。
在一些实施方式中，在用户终端所在的小区内，下行发送端使用单波束进行波束扫描。
第三方面，提供一种设备，该设备包括处理器和存储器，存储器中存储有至少一条指令、至少一段程序、代码集或指令集，至少一条指令、至少一段程序或指令集由处理器加载并执行以实现本发明上述任一方法。
第四方面，提供一种计算机可读存储介质，计算机可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集，至少一条指令、至少一段程序、代码集或指令集由处理器加载并执行以实现本发明上述任一方法。
本公开提供的上下行非对称通信MIMO***的劈裂波束管理方法及***，通过对基站的每个扇区空间进行切割，增加小区数量，使下行波束扫描时无需遍历所有档位，减少波束扫描的时间；有效的进行用户配对和资源分配，不强依赖SRS信道估计准确性，在有限的信道信息输入下，提升了***容量和***性能，降低时延；实现方法简单，提高了波束管理的效率。
另外，在本公开技术方案中，凡未作特别说明的，均可通过采用本领域中的常规手段来实现本技术方案。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本公开一实施例提供的上下行非对称通信MIMO***的劈裂波束管理方法的流程图。
图2为现有技术中上下行非对称通信MIMO***的波束管理方法的流程示意图。
图3为本公开一实施例提供的上下行非对称通信MIMO***的劈裂波束管理方法中下行发送端的示意图。
图4为本公开一实施例提供的上下行非对称通信MIMO***的劈裂波束管理方法中上行接收端的示意图。
图5为基站的一个扇区的水平面示意图。
图6为一个扇区劈裂为n个小区后的水平面示意图。
图7为本公开另一实施例提供的上下行非对称通信MIMO***的劈裂波束管理***的结构示意图。
图8为本公开另一实施例提供的上下行非对称通信MIMO***的劈裂波束管理设备的结构示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对本公开实施例中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公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
实施例1：
在本实施例中，参考说明书附图1，提供了一种上下行非对称通信MIMO***的劈裂波束管理方法，包括以下步骤：
步骤1：在数模混合天线架构中，将下行发送端分成n个射频通道分别进行波束赋形，使一个扇区劈裂为n个小区；
步骤2：当用户终端接入时，n个小区基站均接收用户终端发出的SRS信号，根据各小区基站接收到的SRS信号的能量强度，确定用户终端所在的小区；
步骤3：在用户终端所在的小区内，下行发送端进行波束扫描，用户终端确定下行发送端发送的最佳波束方向并接收。
在传统基站中，往往采用三扇区的结构，每个扇区的水平面示意图参考说明书附图5，对同一扇区的不同角度来说，用户终端接收到的能量会存在差异，同时在同一个扇区内会存在干扰。在步骤1中，将一个扇区劈裂为n个小区后，其水平面示意图参考说明书附图6所示。由此，在大规模 的数模混合天线架构中，通过将下行发送端分成n个射频通道分别进行波束赋形，使波束赋形能够生成较窄的波束。
在步骤2中，各小区基站根据接收到的SRS信号的能量强度确定用户终端所在的小区。
在步骤3中，劈裂后各小区内的基站的下行发送端通过顺序的扫描不同的角度来覆盖整个小区，从而定向的传输SSB波束(信号同步模块波束)进行波束扫描。在可选的实施例中，可以利用SSB波束来识别用户终端发出的波束的初始传输方向并进行波束跟踪。在可选的实施例中，每个小区对应的SSB波束为单波束。由此，简化了CSI-RS测量，降低测量时间。
在可选的实施例中，各小区内的基站使用比全数字波束赋形得到的波束更宽的波束发送SSB波束，由此，可以减少SSB传输的影响并保证及时的网络接入操作。
在可选的实施例中，当多个用户终端接入同一个小区时，该小区基站根据接收到的SRS信号的能量强度，由大到小依次满足用户终端的需求。具体的，例如该小区基站接收到用户1、用户2和用户3的信号能量分别为Re1、Re2和Re3，并且Re1>Re2>Re3，因此基站优先满足用户1的业务需求。
在可选的实施例中，用户终端使用不同宽度的物理随机信道(PARCH)接入，物理随机信道采用单波束，由此，简化了SRS信号(上行探测参考信号)。
本公开提供的上下行非对称通信MIMO***的劈裂波束管理方法，通过对基站的每个扇区空间进行切割，增加小区数量，使下行波束扫描时无需遍历所有档位，减少波束扫描的时间；有效的进行用户配对和资源分配，不强依赖SRS信道估计准确性，在有限的信道信息输入下，提升了***容量和***性能，降低时延；实现方法简单，提高了波束管理的效率。
实施例2：
在本实施例中，参考说明书附图7，提供了一种上下行非对称通信MIMO***的劈裂波束管理***，用于执行上述方法实施例中任一上下行非对称通信MIMO***的劈裂波束管理方法，包括，
扇区劈裂单元11，用于在数模混合天线架构中，将下行发送端分成n个射频通道分别进行波束赋形，使一个扇区劈裂为n个小区；
波束管理单元12，用于当用户终端接入时，使n个小区均接收用户终端发出的SRS信号；根据各小区接收到的SRS信号的能量强度，确定用户终端所在的小区；在用户终端所在的小区内，令下行发送端进行波束扫描，以使用户终端能够确定下行发送端发送的最佳波束方向并接收。
在可选的实施例中，当多个用户终端接入同一个小区时，根据接收到的SRS信号的能量强度，由大到小依次满足用户终端的需求。
在可选的实施例中，在用户终端所在的小区内，下行发送端使用单波束进行波束扫描。
本公开提供的上下行非对称通信MIMO***的劈裂波束管理***，通过对基站的每个扇区空间进行切割，增加小区数量，使下行波束扫描时无需遍历所有档位，减少波束扫描的时间；有效的进行用户配对和资源分配，不强依赖SRS信道估计准确性，在有限的信道信息输入下，提升了***容量和***性能，降低时延；实现方法简单，提高了波束管理的效率。
实施例3：
参考说明书附图8，示出了本申请实施例3提供的一种上下行非对称通信MIMO***的劈裂波束管理设备的结构示意图，该设备包括：
一个或多个处理器31以及存储器32，图8中以一个处理器31为例。
存储器32作为一种非易失性计算机可读存储介质，可用于存储非易失性软件程序、非易失性计算机可执行程序以及模块，如本申请实施例中的上下行非对称通信MIMO***的劈裂波束管理方法对应的程序指令/模块。处理器31通过运行存储在存储器32中的非易失性软件程序、指令以及模块，从而执行服务器的各种功能应用以及数据处理，即实现上述方法实施例的上下行非对称通信MIMO***的劈裂波束管理方法。
存储器32可以包括存储程序区和存储数据区，其中，存储程序区可存储操作***、至少一个功能所需要的应用程序；存储数据区可存储根据上下行非对称通信MIMO***的劈裂波束管理***的使用所创建的数据等。此外，存储器32可以包括高速随机存取存储器，还可以包括非易失性存储 器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实施例中，存储器32可选包括相对于处理器31远程设置的存储器，这些远程存储器可以通过网络连接至上下行非对称通信MIMO***的劈裂波束管理***。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
一个或者多个模块存储在存储器32中，当被一个或者多个处理器31执行时，执行上述任意方法实施例中的上下行非对称通信MIMO***的劈裂波束管理方法。
上述产品可执行本申请实施例所提供的方法，具备执行方法相应的功能模块和有益效果。未在本实施例中详尽描述的技术细节，可参见本申请实施例所提供的方法。
实施例4：
另一方面，本发明实施例4提供一种计算机可读存储介质，存储介质中存储有一个或多个包括执行指令的程序，执行指令能够被设备(包括但不限于计算机，服务器，或者网络设备等)读取并执行，以用于执行上述方法实施例中的相关步骤。
上述本说明书实施例先后顺序仅仅为了描述，不代表实施例的优劣。且上述对说明书特定实施例进行了描述。其它实施例在所附权利要求书的范围内。在一些情况下，在权利要求书中记载的动作或步骤可以按照不同于实施例中的顺序来执行并且仍然可以实现期望的结果。另外，在附图中描绘的过程不一定要求示出的特定顺序或者连续顺序才能实现期望的结果。在某些实施方式中，多任务处理和并行处理也是可以的或者可能是有利的。
本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。尤其，对于***实施例而言，由于其基本相似于方法实施例，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以 通过硬件来完成，也可以通过程序来指令相关的硬件完成，程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上仅为本公开的较佳实施例，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (8)

  1. 上下行非对称通信MIMO***的劈裂波束管理方法，其特征在于，包括以下步骤，
    在数模混合天线架构中，将下行发送端分成n个射频通道分别进行波束赋形，使一个扇区劈裂为n个小区；
    当用户终端接入时，n个小区基站均接收用户终端发出的SRS信号，根据各小区基站接收到的SRS信号的能量强度，确定用户终端所在的小区；
    在用户终端所在的小区内，下行发送端进行波束扫描，用户终端确定下行发送端发送的最佳波束方向并接收。
  2. 根据权利要求1的上下行非对称通信MIMO***的劈裂波束管理方法，其特征在于，
    当多个用户终端接入同一个小区时，根据接收到的SRS信号的能量强度，由大到小依次满足用户终端的需求。
  3. 根据权利要求1的上下行非对称通信MIMO***的劈裂波束管理方法，其特征在于，在用户终端所在的小区内，下行发送端使用单波束进行波束扫描。
  4. 上下行非对称通信MIMO***的劈裂波束管理***，用于执行权利要求1-3任一上下行非对称通信MIMO***的劈裂波束管理方法，其特征在于，包括，
    扇区劈裂单元，用于在数模混合天线架构中，将下行发送端分成n个射频通道分别进行波束赋形，使一个扇区劈裂为n个小区；
    波束管理单元，用于当用户终端接入时，使n个小区均接收用户终端发出的SRS信号；根据各小区接收到的SRS信号的能量强度，确定用户终端所在的小区；在用户终端所在的小区内，令下行发送端进行波束扫描，以使用户终端能够确定下行发送端发送的最佳波束方向并接收。
  5. 根据权利要求4的上下行非对称通信MIMO***的劈裂波束管理***，其特征在于，当多个用户终端接入同一个小区时，根据接收到的SRS 信号的能量强度，由大到小依次满足用户终端的需求。
  6. 根据权利要求4的上下行非对称通信MIMO***的劈裂波束管理***，其特征在于，在用户终端所在的小区内，下行发送端使用单波束进行波束扫描。
  7. 一种上下行非对称通信MIMO***的劈裂波束管理设备，其特征在于，所述设备包括处理器和存储器，所述存储器中存储有至少一条指令、至少一段程序、代码集或指令集，所述至少一条指令、所述至少一段程序或指令集由所述处理器加载并执行以实现如权利要求1至3任一所述的上下行非对称通信MIMO***的劈裂波束管理方法。
  8. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集，所述至少一条指令、所述至少一段程序、所述代码集或指令集由处理器加载并执行以实现如权利要求1至3任一所述的上下行非对称通信MIMO***的劈裂波束管理方法。
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