WO2022227482A1 - 干扰消除的方法、装置、系统和存储介质 - Google Patents

干扰消除的方法、装置、系统和存储介质 Download PDF

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Publication number
WO2022227482A1
WO2022227482A1 PCT/CN2021/129484 CN2021129484W WO2022227482A1 WO 2022227482 A1 WO2022227482 A1 WO 2022227482A1 CN 2021129484 W CN2021129484 W CN 2021129484W WO 2022227482 A1 WO2022227482 A1 WO 2022227482A1
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Prior art keywords
base station
interfered
original signal
interference
signal
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English (en)
French (fr)
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魏垚
林衡华
黄韬
金宁
董明洋
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/391—Modelling the propagation channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic

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  • the present application is based on the CN application number 202110448185.2 and the filing date is April 25, 2021, and claims its priority.
  • the disclosure of the CN application is hereby incorporated into the present application as a whole.
  • the present disclosure relates to the field of mobile communication technologies, and in particular, to a method, apparatus, system and storage medium for interference cancellation.
  • the uplink and downlink need to be strictly synchronized, otherwise cross-interference will occur.
  • the 3.5GHz 5G network of some operators adopts the same 2.5ms dual time slot configuration of the whole network, and the proportion of uplink is 25%.
  • a large number of uplink services are required, so more uplink time slots need to be configured. Therefore, there is a risk of uplink and downlink cross-interference in edge regions of different time slot configurations.
  • a method for eliminating interference including: an interfered base station measures an original signal sent by the interferer base station through a wireless propagation path, and obtains a received signal; the interfered base station obtains a received signal through a lossless propagation path The original signal sent by the interfering base station; the interfered base station determines the spatial channel model between the interfering base station and the interfered base station according to the received signal and the original signal; the interfered base station uses the spatial channel model to eliminate interference.
  • the original signal is a common public radio interface signal.
  • the interfered base station measures the original signal sent by the interferer base station through the wireless propagation path in the guard time slot to obtain the received signal.
  • determining the spatial channel model between the interfering base station and the interfered base station includes: determining parameters of the spatial channel model between the interfering base station and the interfered base station according to the ratio of the characteristics of the received signal to the characteristics of the original signal.
  • the characteristic includes at least one of amplitude, phase, or delay.
  • the interference elimination of the interfered base station by using the spatial channel model includes: in the uplink time slot of the interfered base station, the interfered base station measures the signal through the wireless propagation path to obtain the mixed received signal; in the uplink time slot, the interfered base station passes Lossless propagation path, obtain the original interference signal sent by the interfering base station; the interfered base station calculates the interference received signal based on the spatial channel model and the original interference signal; the interfered base station performs interference cancellation on the mixed received signal according to the interference received signal, and obtains the interference received by the terminal to the interfered The uplink signal sent by the base station.
  • an interference cancellation device comprising: a wireless measurement module configured to measure an original signal sent by an interfering base station through a wireless propagation path to obtain a received signal; an original signal acquisition module, is configured to obtain the original signal sent by the interfering base station through a lossless propagation path; the model determination module is configured to determine the spatial channel model between the interfering base station and the interfered base station according to the received signal and the original signal; the interference cancellation module is configured as Use spatial channel models to eliminate interference.
  • the original signal is a common public radio interface signal.
  • the wireless measurement module is further configured to measure the original signal sent by the interfering base station through the wireless propagation path in the guard time slot to obtain the received signal.
  • the model determination module is further configured to determine a spatial channel model parameter between the interfering base station and the interfered base station according to a ratio of the characteristic of the received signal to the characteristic of the original signal.
  • the characteristic includes at least one of amplitude, phase, or delay.
  • the wireless measurement module is further configured to measure the signal through the wireless propagation path in the uplink time slot of the interfered base station, and obtain the mixed received signal
  • the original signal acquisition module is further configured to be in the uplink time slot, through A lossless propagation path is used to obtain the interference original signal sent by the interfering base station
  • the interference cancellation module is further configured to calculate the interference received signal based on the spatial channel model and the interference original signal
  • Uplink signal sent to the interfered base station is further configured to measure the signal through the wireless propagation path in the uplink time slot of the interfered base station, and obtain the mixed received signal
  • the original signal acquisition module is further configured to be in the uplink time slot, through A lossless propagation path is used to obtain the interference original signal sent by the interfering base station
  • the interference cancellation module is further configured to calculate the interference received signal based on the spatial channel model and the interference original signal
  • Uplink signal sent to the interfered base station is further configured to measure the signal through the wireless propagation path in the uplink time slot of the interfered base
  • a base station comprising: any one of the aforementioned interference cancellation apparatuses.
  • a system for interference cancellation comprising: the aforementioned base station as an interfered base station; and an interferer base station configured to transmit an original signal through a wireless propagation path, and to transmit an original signal through lossless propagation The path sends the original signal to the interfered base station.
  • the interfering base station is further configured to transmit the interfering original signal over the wireless propagation path and to transmit the interfering original signal to the interfered base station over the lossless propagation path.
  • an apparatus for interference cancellation comprising: a memory; and a processor coupled to the memory, the processor configured to execute any one of the foregoing based on instructions stored in the memory a method of interference cancellation.
  • a non-transitory computer-readable storage medium having a computer program stored thereon, wherein when the program is executed by a processor, any one of the aforementioned interference cancellation methods is implemented.
  • FIG. 1 shows a schematic flowchart of a method for interference cancellation according to some embodiments of the present disclosure.
  • FIG. 2 exemplarily shows a schematic diagram of signal transmission of the present disclosure.
  • FIG. 3 shows a schematic flowchart of an interference cancellation method according to other embodiments of the present disclosure.
  • FIG. 4 shows a schematic structural diagram of an interference cancellation apparatus according to some embodiments of the present disclosure.
  • FIG. 5 shows a schematic structural diagram of a base station according to some embodiments of the present disclosure.
  • FIG. 6 shows a schematic structural diagram of an interference cancellation system according to some embodiments of the present disclosure.
  • FIG. 7 shows a schematic structural diagram of an interference cancellation apparatus according to other embodiments of the present disclosure.
  • FIG. 8 shows a schematic structural diagram of an interference cancellation apparatus according to further embodiments of the present disclosure.
  • a technical problem to be solved by the embodiments of the present disclosure is: how to reduce the waste of resources on the premise of avoiding interference.
  • FIG. 1 shows a schematic flowchart of a method for interference cancellation according to some embodiments of the present disclosure. As shown in FIG. 1 , the method for eliminating interference in this embodiment includes steps S102 to S108.
  • step S102 the interfered base station measures the original signal sent by the interferer base station through the wireless propagation path, and obtains the received signal.
  • the signal sent by the sender and the signal received by the receiver are not exactly the same. That is, the characteristics of the original signal sent by the interfering base station and the received signal obtained by the interfered base station are different.
  • the characteristics of the signal include at least one of amplitude, phase, or delay, and may also include other characteristics as needed.
  • the interfered base station measures the original signal sent by the interferer base station through a wireless propagation path in a guard time slot (Guard Period, GP for short) to obtain the received signal.
  • a guard time slot Guard Period, GP for short
  • uplink data and downlink data are not sent, so the received signal can be determined according to the influence of the original signal and the wireless transmission space, so that the spatial channel model between the interfering base station and the interfered base station can be determined more accurately.
  • step S104 the interfered base station obtains the original signal sent by the interferer base station through the lossless propagation path.
  • the original signal is a Common Public Radio Interface (Common Public Radio Interface, CPRI for short) signal.
  • CPRI Common Public Radio Interface
  • the transmission of the CPRI signal is lossless, that is, the CPRI signal propagates through a lossless propagation path, so that the interfered base station can accurately obtain the original signal.
  • step S106 the interfered base station determines a spatial channel model between the interfered base station and the interfered base station according to the received signal and the original signal.
  • the spatial channel model parameters between the interfering base station and the interfered base station are determined according to the ratio of the characteristics of the received signal to the characteristics of the original signal.
  • the characteristics of the signal are represented by a matrix, and each element in the matrix corresponds to a sub-feature.
  • the spatial channel model can be as shown in Equation (1).
  • h represents the spatial channel model parameter between the interfering base station and the interfered base station, which represents the influence degree of the wireless propagation path on the signal
  • r1 represents the characteristic matrix of the received signal
  • s1 represents the characteristic matrix of the original signal .
  • step S108 the interfered base station uses the spatial channel model to eliminate the interference.
  • FIG. 2 exemplarily shows a schematic diagram of signal transmission of the present disclosure.
  • the interfering base station 21 also sends s1 to the interfered base station 22 through the lossless propagation path, so that the interfered base station can calculate h according to s1 and r1 when the terminal 23 does not send uplink data.
  • the signal obtained by the interfered base station comes from the terminal, and a part comes from the interferer base station.
  • the signal received by the interfered base station 22 not only comes from the uplink signal sent by the terminal 23 , but also includes the interference generated by the interferer base station 21 .
  • the influence degree of the interfering base station on the interfered base station in the actual uplink transmission process can be calculated, and by eliminating these influencing factors, the uplink signal actually sent by the terminal can be obtained.
  • This method does not need to divide additional time-frequency resources, estimates the interference signal more accurately, does not need to insert special measurement symbols, and does not change the existing protocol. Therefore, the above embodiments reduce the waste of resources on the premise of reducing interference.
  • the interfered base station uses a spatial channel model to eliminate interference.
  • the following describes an embodiment in which the interfered base station uses a spatial channel model to eliminate interference with reference to FIG. 3 .
  • FIG. 3 shows a schematic flowchart of an interference cancellation method according to other embodiments of the present disclosure. As shown in FIG. 3 , the interference elimination method of this embodiment includes steps S302 to S308.
  • step S302 in the uplink time slot of the interfered base station, the interfered base station measures the signal through the wireless propagation path to obtain the mixed received signal.
  • the mixed received signal includes both the uplink signal sent by the terminal and the interference signal generated by the interfering base station.
  • step S304 in the uplink time slot, the interfered base station obtains the original interference signal sent by the interferer base station through the lossless propagation path.
  • step S306 the interfered base station calculates the interfered received signal based on the spatial channel model and the interfered original signal.
  • the feature of the interfering original signal is s2
  • the parameter of the spatial channel model is h.
  • the interference received signal can be restored.
  • step S308 the interfered base station performs interference cancellation on the mixed received signal according to the interfered received signal to obtain an uplink signal sent by the terminal to the interfered base station.
  • a predetermined spatial channel model is used to calculate the signal estimation of the interferer base station arrival, so as to realize the interference cancellation of the uplink and downlink signals.
  • FIG. 4 shows a schematic structural diagram of an interference cancellation apparatus according to some embodiments of the present disclosure.
  • the apparatus 400 for eliminating interference in this embodiment includes: a wireless measurement module 4100, configured to measure an original signal sent by an interfering base station through a wireless propagation path, and obtain a received signal; an original signal acquisition module 4200, configured to Obtain the original signal sent by the interfering base station through the lossless propagation path; the model determination module 4300 is configured to determine the spatial channel model between the interfering base station and the interfered base station according to the received signal and the original signal; the interference cancellation module 4400 is configured to use The spatial channel model eliminates interference.
  • the original signal is a common public radio interface signal.
  • the wireless measurement module 4100 is further configured to measure the original signal sent by the interfering base station through the wireless propagation path in the guard time slot to obtain the received signal.
  • the model determination module 4300 is further configured to determine the spatial channel model parameters between the interfering base station and the interfered base station according to the ratio of the characteristic of the received signal to the characteristic of the original signal.
  • the characteristic includes at least one of amplitude, phase, or delay.
  • the wireless measurement module 4100 is further configured to measure the signal through the wireless propagation path in the uplink time slot of the interfered base station, and obtain the mixed received signal
  • the original signal acquisition module 4200 is further configured to be in the uplink time slot. , obtain the interference original signal sent by the interference base station through the lossless propagation path
  • the interference cancellation module 4400 is further configured to calculate the interference received signal based on the spatial channel model and the interference original signal; and, according to the interference received signal, perform interference cancellation on the mixed received signal , to obtain the uplink signal sent by the terminal to the interfered base station.
  • FIG. 5 shows a schematic structural diagram of a base station according to some embodiments of the present disclosure.
  • the base station 50 in this embodiment includes any one of the aforementioned interference cancellation apparatuses 400 .
  • FIG. 6 shows a schematic structural diagram of an interference cancellation system according to some embodiments of the present disclosure.
  • the interference cancellation system 6 of this embodiment includes a base station 50 and a base station 60 , wherein the base station 50 is an interfered base station, and the base station 60 is an interferer base station.
  • the interfering base station 60 is configured to transmit the original signal through the wireless propagation path and to transmit the original signal to the interfered base station 50 through the lossless propagation path.
  • the interfering base station 60 is further configured to transmit the interfering original signal over the wireless propagation path and to transmit the interfering original signal to the interfered base station 50 over the lossless propagation path.
  • FIG. 7 shows a schematic structural diagram of an interference cancellation apparatus according to other embodiments of the present disclosure.
  • the interference cancellation apparatus 70 of this embodiment includes: a memory 710 and a processor 720 coupled to the memory 710 , and the processor 720 is configured to execute any one of the foregoing based on the instructions stored in the memory 710 Methods of interference cancellation in embodiments.
  • the memory 710 may include, for example, a system memory, a fixed non-volatile storage medium, and the like.
  • the system memory stores, for example, an operating system, an application program, a boot loader (Boot Loader), and other programs.
  • FIG. 8 shows a schematic structural diagram of an interference cancellation apparatus according to further embodiments of the present disclosure.
  • the apparatus 80 for eliminating interference in this embodiment includes: a memory 810 and a processor 820, and may further include an input/output interface 830, a network interface 840, a storage interface 850, and the like. These interfaces 830 , 840 , 850 and the memory 810 and the processor 820 can be connected, for example, through a bus 860 .
  • the input and output interface 830 provides a connection interface for input and output devices such as a display, a mouse, a keyboard, and a touch screen.
  • Network interface 840 provides a connection interface for various networked devices.
  • the storage interface 850 provides a connection interface for external storage devices such as SD cards and U disks.
  • Embodiments of the present disclosure also provide a computer-readable storage medium on which a computer program is stored, characterized in that, when the program is executed by a processor, any one of the aforementioned interference cancellation methods is implemented.
  • embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein .
  • computer-usable non-transitory storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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Abstract

本公开公开了一种干扰消除的方法、装置、系统和存储介质，涉及移动通信技术领域。干扰消除的方法包括：被干扰基站通过无线传播路径测量干扰基站发送的原始信号，获得接收信号；被干扰基站通过无损传播路径，获取干扰基站发送的原始信号；被干扰基站根据接收信号和原始信号，确定干扰基站和被干扰基站间的空间信道模型；被干扰基站利用空间信道模型消除干扰。本公开的实施例不需要额外地划分时频资源，对干扰信号的估算更加准确，也无需插入特殊的测量符号，不改变现有协议。因此，本公开在避免干扰的前提下，降低了对资源的浪费。

Description

干扰消除的方法、装置、系统和存储介质
相关申请的交叉引用
本申请是以CN申请号为202110448185.2，申请日为2021年4月25日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。
技术领域
本公开涉及移动通信技术领域，特别涉及一种干扰消除的方法、装置、系统和存储介质。
背景技术
在TDD(Time Division Duplexing，时分双工)组网中，上下行需要严格同步，否则会产生交叉干扰。目前，部分运营商3.5GHz 5G的网络采用全网相同的2.5ms双时隙配置，上行的配比在25％。而在一些特殊的行业应用场合，要求大量的上行业务，因此需要配置更多的上行时隙。从而，在不同时隙配置的边缘区域就存在上下行交叉干扰的风险。
在相关技术中，为了避免这种干扰，通常的做法是划出一定的干扰保护区，以在干扰区内不使用干扰时隙。
发明内容
根据本公开一些实施例的第一个方面，提供一种干扰消除的方法，包括：被干扰基站通过无线传播路径测量干扰基站发送的原始信号，获得接收信号；被干扰基站通过无损传播路径，获取干扰基站发送的原始信号；被干扰基站根据接收信号和原始信号，确定干扰基站和被干扰基站间的空间信道模型；被干扰基站利用空间信道模型消除干扰。
在一些实施例中，原始信号为通用公共无线接口信号。
在一些实施例中，被干扰基站在保护时隙，通过无线传播路径测量干扰基站发送的原始信号，获得接收信号。
在一些实施例中，确定干扰基站和被干扰基站间的空间信道模型包括：根据接收信号的特征和原始信号的特征之比，确定干扰基站和被干扰基站间的空间信道模型参 数。
在一些实施例中，特征包括幅度、相位、或时延中的至少一种。
在一些实施例中，被干扰基站利用空间信道模型消除干扰包括：在被干扰基站的上行时隙，被干扰基站通过无线传播路径测量信号，获得混合接收信号；在上行时隙，被干扰基站通过无损传播路径，获取干扰基站发送的干扰原始信号；被干扰基站基于空间信道模型和干扰原始信号，计算干扰接收信号；被干扰基站根据干扰接收信号对混合接收信号进行干扰消除，获得终端向被干扰基站发送的上行信号。
根据本公开一些实施例的第二个方面，提供一种干扰消除的装置，包括：无线测量模块，被配置为通过无线传播路径测量干扰基站发送的原始信号，获得接收信号；原始信号获取模块，被配置为通过无损传播路径，获取干扰基站发送的原始信号；模型确定模块，被配置为根据接收信号和原始信号，确定干扰基站和被干扰基站间的空间信道模型；干扰消除模块，被配置为利用空间信道模型消除干扰。
在一些实施例中，原始信号为通用公共无线接口信号。
在一些实施例中，无线测量模块进一步被配置为在保护时隙，通过无线传播路径测量干扰基站发送的原始信号，获得接收信号。
在一些实施例中，模型确定模块进一步被配置为根据接收信号的特征和原始信号的特征之比，确定干扰基站和被干扰基站间的空间信道模型参数。
在一些实施例中，特征包括幅度、相位、或时延中的至少一种。
在一些实施例中，其中：无线测量模块进一步被配置为在被干扰基站的上行时隙，通过无线传播路径测量信号，获得混合接收信号；原始信号获取模块进一步被配置为在上行时隙，通过无损传播路径，获取干扰基站发送的干扰原始信号；干扰消除模块进一步被配置为基于空间信道模型和干扰原始信号，计算干扰接收信号；以及，根据干扰接收信号对混合接收信号进行干扰消除，获得终端向被干扰基站发送的上行信号。
根据本公开一些实施例的第三个方面，提供一种基站，包括：前述任意一种干扰消除的装置。
根据本公开一些实施例的第四个方面，提供一种干扰消除的系统，包括：前述基站，作为被干扰基站；以及，干扰基站，被配置为通过无线传播路径发送原始信号、以及通过无损传播路径向被干扰基站发送原始信号。
在一些实施例中，干扰基站进一步被配置为通过无线传播路径发送干扰原始信号、以及通过无损传播路径向被干扰基站发送干扰原始信号。
根据本公开一些实施例的第五个方面，提供一种干扰消除的装置，包括：存储器；以及耦接至存储器的处理器，处理器被配置为基于存储在存储器中的指令，执行前述任意一种干扰消除的方法。
根据本公开一些实施例的第六个方面，提供一种非瞬时性计算机可读存储介质，其上存储有计算机程序，其中，该程序被处理器执行时实现前述任意一种干扰消除的方法。
通过以下参照附图对本公开的示例性实施例的详细描述，本公开的其它特征及其优点将会变得清楚。
附图说明
为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅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性的前提下，还可以根据这些附图获得其他的附图。
图1示出了根据本公开一些实施例的干扰消除的方法的流程示意图。
图2示例性地示出了本公开的信号传输示意图。
图3示出了根据本公开另一些实施例的干扰消除方法的流程示意图。
图4示出了根据本公开一些实施例的干扰消除的装置的结构示意图。
图5示出了根据本公开一些实施例的基站的结构示意图。
图6示出了根据本公开一些实施例的干扰消除的系统的结构示意图。
图7示出了根据本公开另一些实施例的干扰消除的装置的结构示意图。
图8示出了根据本公开又一些实施例的干扰消除的装置的结构示意图。
具体实施方式
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，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。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。
除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表 达式和数值不限制本公开的范围。
同时，应当明白，为了便于描述，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为授权说明书的一部分。
在这里示出和讨论的所有示例中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它示例可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
发明人经过分析后发现，相关技术的会浪费大量的时频资源。
本公开实施例所要解决的一个技术问题是：如何在避免干扰的前提下，降低对资源的浪费。
图1示出了根据本公开一些实施例的干扰消除的方法的流程示意图。如图1所示，该实施例的干扰消除的方法包括步骤S102～S108。
在步骤S102中，被干扰基站通过无线传播路径测量干扰基站发送的原始信号，获得接收信号。
由于无线传播路径会对信号产生影响，因此发送端发送的信号和接收端接收的信号并不完全相同。即，干扰基站发送的原始信号和被干扰基站获得的接收信号的特征存在差异。
在一些实施例中，信号的特征包括幅度、相位、或时延中的至少一种，根据需要，还可以包括其他特征。
在一些实施例中，被干扰基站在保护时隙(Guard Period，简称：GP)，通过无线传播路径测量干扰基站发送的原始信号，获得接收信号。在保护时隙，不进行上行数据和下行数据的发送，因此接收信号可以根据原始信号和无线传输空间的影响而确定，从而能够更准确地确定干扰基站和被干扰基站间的空间信道模型。
在步骤S104中，被干扰基站通过无损传播路径，获取干扰基站发送的原始信号。
在一些实施例中，原始信号为通用公共无线接口(Common Public Radio Interface，简称：CPRI)信号。CPRI信号的传输是无损的，即CPRI信号通过无损传播路径传播，从而被干扰基站能够准确地获得原始信号。
在步骤S106中，被干扰基站根据接收信号和原始信号，确定干扰基站和被干扰 基站间的空间信道模型。
在一些实施例中，根据接收信号的特征和原始信号的特征之比，确定干扰基站和被干扰基站间的空间信道模型参数。
例如，信号的特征采用矩阵表示，矩阵中的每个元素对应一种子特征。从而，空间信道模型可以如公式(1)所示。
h＝r1/s1                            (1)
在公式(1)中，h表示干扰基站和被干扰基站间的空间信道模型参数，该数值表征了无线传播路径对信号的影响程度；r1表示接收信号的特征矩阵；s1表示原始信号的特征矩阵。
在步骤S108中，被干扰基站利用空间信道模型消除干扰。
图2示例性地示出了本公开的信号传输示意图。如图2所示，干扰基站21的原始信号为s1，s1通过无线传播路径210发送，被干扰基站22获得的接收信号为r1＝s1*h。此外，干扰基站21还通过无损传播路径向被干扰基站22发送s1，使得被干扰基站在终端23没有发送上行数据时，能够根据s1和r1解算出h。
在实际的上行传输过程中，被干扰基站获得的信号一部分来源于终端，一部分来源于干扰基站。例如，被干扰基站22接收的信号既来自于终端23发送的上行信号、又包括了干扰基站21产生的干扰。通过确定空间信道模型，能够计算出实际上行传输过程中干扰基站对被干扰基站产生的影响程度，通过将这部分影响因素消除，就能够得到终端实际发送的上行信号。这种方法不需要额外地划分时频资源，对干扰信号的估算更加准确，也无需插入特殊的测量符号，不改变现有协议。因此，上述实施例在降低干扰的前提下，降低了对资源的浪费。
在一些实施例中，在被干扰基站的上行时隙，被干扰基站利用空间信道模型消除干扰。下面参考图3描述被干扰基站利用空间信道模型消除干扰的实施例。
图3示出了根据本公开另一些实施例的干扰消除方法的流程示意图。如图3所示，该实施例的干扰消除方法包括步骤S302～S308。
在步骤S302中，在被干扰基站的上行时隙，被干扰基站通过无线传播路径测量信号，获得混合接收信号。在上行时隙，混合接收信号中既有终端发送的上行信号，又有干扰基站产生的干扰信号。
在步骤S304中，在该上行时隙，被干扰基站通过无损传播路径，获取干扰基站发送的干扰原始信号。
在步骤S306中，被干扰基站基于空间信道模型和干扰原始信号，计算干扰接收信号。
例如，干扰原始信号的特征为s2，空间信道模型的参数为h。则基于公式(1)，可以计算出干扰接收信号的特征r2＝h*s2。而基于干扰接收信号的特征，可以对干扰接收信号进行还原。
在步骤S308中，被干扰基站根据干扰接收信号对混合接收信号进行干扰消除，获得终端向被干扰基站发送的上行信号。
例如，采用ru表示终端向被干扰基站发送的上行信号，采用r表示被干扰基站获取的混合接收信号，则可以通过ru＝r-h*s2来解算ru，以确定终端向被干扰基站发送的上行信号。
上述实施例在被干扰基站的上行时隙，利用预先确定的空间信道模型计算干扰基站到达的信号估计，实现了上下行信号的干扰对消。
下面参考图4描述本公开干扰消除的装置的实施例。
图4示出了根据本公开一些实施例的干扰消除的装置的结构示意图。如图4所示，该实施例的干扰消除的装置400包括：无线测量模块4100，被配置为通过无线传播路径测量干扰基站发送的原始信号，获得接收信号；原始信号获取模块4200，被配置为通过无损传播路径，获取干扰基站发送的原始信号；模型确定模块4300，被配置为根据接收信号和原始信号，确定干扰基站和被干扰基站间的空间信道模型；干扰消除模块4400，被配置为利用空间信道模型消除干扰。
在一些实施例中，原始信号为通用公共无线接口信号。
在一些实施例中，无线测量模块4100进一步被配置为在保护时隙，通过无线传播路径测量干扰基站发送的原始信号，获得接收信号。
在一些实施例中，模型确定模块4300进一步被配置为根据接收信号的特征和原始信号的特征之比，确定干扰基站和被干扰基站间的空间信道模型参数。
在一些实施例中，特征包括幅度、相位、或时延中的至少一种。
在一些实施例中，其中：无线测量模块4100进一步被配置为在被干扰基站的上行时隙，通过无线传播路径测量信号，获得混合接收信号；原始信号获取模块4200进一步被配置为在上行时隙，通过无损传播路径，获取干扰基站发送的干扰原始信号；干扰消除模块4400进一步被配置为基于空间信道模型和干扰原始信号，计算干扰接收信号；以及，根据干扰接收信号对混合接收信号进行干扰消除，获得终端向被干扰 基站发送的上行信号。
下面参考图5描述本公开基站的实施例。
图5示出了根据本公开一些实施例的基站的结构示意图。如图5所示，该实施例的基站50包括前述任意一种干扰消除的装置400。
下面参考图6描述本公开干扰消除的装置的实施例。
图6示出了根据本公开一些实施例的干扰消除的系统的结构示意图。如图6所示，该实施例的干扰消除的系统6包括基站50和基站60，其中，基站50为被干扰基站，基站60为干扰基站。
干扰基站60被配置为通过无线传播路径发送原始信号、以及通过无损传播路径向被干扰基站50发送原始信号。
在一些实施例中，干扰基站60进一步被配置为通过无线传播路径发送干扰原始信号、以及通过无损传播路径向被干扰基站50发送干扰原始信号。
图7示出了根据本公开另一些实施例的干扰消除的装置的结构示意图。如图7所示，该实施例的干扰消除的装置70包括：存储器710以及耦接至该存储器710的处理器720，处理器720被配置为基于存储在存储器710中的指令，执行前述任意一个实施例中的干扰消除的方法。
其中，存储器710例如可以包括系统存储器、固定非易失性存储介质等。系统存储器例如存储有操作系统、应用程序、引导装载程序(Boot Loader)以及其他程序等。
图8示出了根据本公开又一些实施例的干扰消除的装置的结构示意图。如图8所示，该实施例的干扰消除的装置80包括：存储器810以及处理器820，还可以包括输入输出接口830、网络接口840、存储接口850等。这些接口830，840，850以及存储器810和处理器820之间例如可以通过总线860连接。其中，输入输出接口830为显示器、鼠标、键盘、触摸屏等输入输出设备提供连接接口。网络接口840为各种联网设备提供连接接口。存储接口850为SD卡、U盘等外置存储设备提供连接接口。
本公开的实施例还提供一种计算机可读存储介质，其上存储有计算机程序，其特征在于，该程序被处理器执行时实现前述任意一种干扰消除的方法。
本领域内的技术人员应当明白，本公开的实施例可提供为方法、系统、或计算机程序产品。因此，本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用非瞬时性存储介质(包括但不限于磁盘存储器、CD-ROM、光学 存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解为可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述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 (17)

  1. 一种干扰消除的方法，包括：
    被干扰基站通过无线传播路径测量干扰基站发送的原始信号，获得接收信号；
    所述被干扰基站通过无损传播路径，获取所述干扰基站发送的原始信号；
    所述被干扰基站根据所述接收信号和所述原始信号，确定所述干扰基站和所述被干扰基站间的空间信道模型；
    所述被干扰基站利用所述空间信道模型消除干扰。
  2. 根据权利要求1所述的方法，其中，所述原始信号为通用公共无线接口信号。
  3. 根据权利要求1所述的方法，其中，所述被干扰基站在保护时隙，通过无线传播路径测量干扰基站发送的原始信号，获得接收信号。
  4. 根据权利要求1所述的方法，其中，所述确定所述干扰基站和所述被干扰基站间的空间信道模型包括：
    根据所述接收信号的特征和所述原始信号的特征之比，确定所述干扰基站和所述被干扰基站间的空间信道模型参数。
  5. 根据权利要求4所述的方法，其中，所述特征包括幅度、相位、或时延中的至少一种。
  6. 根据权利要求1所述的方法，其中，所述被干扰基站利用所述空间信道模型消除干扰包括：
    在所述被干扰基站的上行时隙，所述被干扰基站通过无线传播路径测量信号，获得混合接收信号；
    在所述上行时隙，所述被干扰基站通过无损传播路径，获取所述干扰基站发送的干扰原始信号；
    所述被干扰基站基于所述空间信道模型和所述干扰原始信号，计算干扰接收信号；
    所述被干扰基站根据所述干扰接收信号对所述混合接收信号进行干扰消除，获得 终端向所述被干扰基站发送的上行信号。
  7. 一种干扰消除的装置，包括：
    无线测量模块，被配置为通过无线传播路径测量干扰基站发送的原始信号，获得接收信号；
    原始信号获取模块，被配置为通过无损传播路径，获取所述干扰基站发送的原始信号；
    模型确定模块，被配置为根据所述接收信号和所述原始信号，确定所述干扰基站和所述被干扰基站间的空间信道模型；
    干扰消除模块，被配置为利用所述空间信道模型消除干扰。
  8. 根据权利要求7所述的装置，其中，所述原始信号为通用公共无线接口信号。
  9. 根据权利要求7所述的装置，其中，所述无线测量模块进一步被配置为在保护时隙，通过无线传播路径测量干扰基站发送的原始信号，获得接收信号。
  10. 根据权利要求7所述的装置，其中，所述模型确定模块进一步被配置为根据所述接收信号的特征和所述原始信号的特征之比，确定所述干扰基站和所述被干扰基站间的空间信道模型参数。
  11. 根据权利要求10所述的装置，其中，所述特征包括幅度、相位、或时延中的至少一种。
  12. 根据权利要求7所述的装置，其中：
    所述无线测量模块进一步被配置为在所述被干扰基站的上行时隙，通过无线传播路径测量信号，获得混合接收信号；
    所述原始信号获取模块进一步被配置为在所述上行时隙，通过无损传播路径，获取所述干扰基站发送的干扰原始信号；
    所述干扰消除模块进一步被配置为基于所述空间信道模型和所述干扰原始信号，计算干扰接收信号；以及，根据所述干扰接收信号对所述混合接收信号进行干扰消除， 获得终端向所述被干扰基站发送的上行信号。
  13. 一种基站，包括：
    权利要求7-12中任一项所述的干扰消除的装置。
  14. 一种干扰消除的系统，包括：
    权利要求13所述的基站，作为被干扰基站；以及
    干扰基站，被配置为通过无线传播路径发送原始信号、以及通过无损传播路径向所述被干扰基站发送所述原始信号。
  15. 根据权利要求14所述的系统，其中，所述干扰基站进一步被配置为通过无线传播路径发送干扰原始信号、以及通过无损传播路径向所述被干扰基站发送所述干扰原始信号。
  16. 一种干扰消除的装置，包括：
    存储器；以及
    耦接至所述存储器的处理器，所述处理器被配置为基于存储在所述存储器中的指令，执行如权利要求1-6中任一项所述的干扰消除的方法。
  17. 一种非瞬时性计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现权利要求1-6中任一项所述的干扰消除的方法。
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