CN106658552B - Interference management method, system - Google Patents
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Abstract
本发明提供了一种干扰管理方法、系统，本发明在干扰管理中首先考虑不同小区的负载均衡，对于自身不是超载小区并且邻小区是超载小区的小区进行负载均衡，降低干扰分布不均衡造成干扰管理的困难；之后，针对边缘用户和中心用户的干扰特点，对边缘用户采用干扰对齐技术进行干扰管理，对中心用户采用基于干扰的资源避让机制进行干扰管理，实现将中心用户和边缘用户分别放置不同频带，同时采用不同的干扰管理策略，可以有效解决超密集网络中的干扰问题。
The present invention provides an interference management method and system. The present invention first considers load balancing of different cells in interference management, and performs load balancing for cells that are not overloaded cells and adjacent cells are overloaded cells, so as to reduce interference caused by unbalanced interference distribution. Then, according to the interference characteristics of edge users and central users, interference alignment technology is used for edge users to manage interference, and interference-based resource avoidance mechanism is used for central users to manage interference, so that central users and edge users can be placed separately. Different frequency bands and different interference management strategies can be used to effectively solve the interference problem in ultra-dense networks.
Description
技术领域technical field
本发明属于干扰管理技术领域，更具体涉及一种干扰管理方法、系统。The invention belongs to the technical field of interference management, and more particularly relates to an interference management method and system.
背景技术Background technique
第五代移动通信(5G)的研发在世界范围内如火如荼地展开。在5G通信中，无线通信网络正朝着网络多元化、宽带化、综合化、智能化的方向演进。随着各种智能终端的普及，数据流量将出现井喷式的增长。未来数据业务将主要分布在室内和热点地区，这使得超密集网络成为实现未来5G的1000倍流量需求的主要手段之一。超密集网络能够改善网络覆盖，大幅度提升系统容量，并且对业务进行分流，具有更灵活的网络部署和更高效的频率复用。The research and development of the fifth generation mobile communication (5G) is in full swing around the world. In 5G communication, the wireless communication network is evolving in the direction of network diversification, broadbandization, integration and intelligence. With the popularization of various smart terminals, data traffic will see a blowout growth. In the future, data services will be mainly distributed in indoor and hotspot areas, which makes ultra-dense networks one of the main means to achieve 1,000 times the traffic demand of 5G in the future. Ultra-dense networks can improve network coverage, greatly increase system capacity, and offload services, enabling more flexible network deployment and more efficient frequency reuse.
与此同时，愈发密集的网络部署也使得网络拓扑更加复杂，由于网络和服务单元的密集特性，存在大量干扰源，与传统网络相比，具有最强干扰占比低、干扰源众多、各个干扰源造成的干扰大致相当的特点；同时，随着小站数目的增多，网络密集后，小区的重叠区域增大，邻区的干扰增大，干扰小区增多，网络动态性增高，导致干扰管理更具挑战性。传统方案中的ICIC(小区间干扰协调)和eICIC(增强的小区间干扰协调)策略已经无法完全解决密集网络部署的干扰问题。At the same time, the increasingly dense network deployment also makes the network topology more complex. Due to the dense nature of the network and service units, there are a large number of interference sources. The interference caused by the interference source has roughly the same characteristics; at the same time, with the increase of the number of small stations, after the network is dense, the overlapping area of the cells increases, the interference of neighboring cells increases, the number of interfering cells increases, and the network dynamics increases, resulting in interference management. more challenging. ICIC (Inter-Cell Interference Coordination) and eICIC (Enhanced Inter-Cell Interference Coordination) strategies in traditional solutions have been unable to completely solve the interference problem of dense network deployment.
发明内容SUMMARY OF THE INVENTION
本发明要解决的技术问题是如何为超密集网络设计更为有效、合理的干扰管理方法或系统。The technical problem to be solved by the present invention is how to design a more effective and reasonable interference management method or system for an ultra-dense network.
为了解决上述技术问题，本发明提供一种干扰管理方法，所述方法包括以下步骤：In order to solve the above technical problems, the present invention provides an interference management method, which comprises the following steps:
根据所管理的各个小区的负载，判断所管理的各个小区中是否存在待均衡小区，其中所述待均衡小区为自身不是超载小区，并且邻小区是超载小区的小区；According to the load of each cell under management, determine whether there is a cell to be balanced in each cell under management, wherein the cell to be balanced is a cell that is not itself an overloaded cell, and a neighboring cell is an overloaded cell;
在存在所述待均衡小区时，对于每个所述待均衡小区，将该待均衡小区对应的基站发射的参考信号功率提高预定值；When the cells to be equalized exist, for each cell to be equalized, the reference signal power transmitted by the base station corresponding to the cell to be equalized is increased by a predetermined value;
在不存在所述待均衡小区时，根据所管理的各个小区中边缘用户的参数和所有用户参数将所管理的各个小区的频带分别划分为边缘用户频带与中心用户频带；之后将所述边缘用户频带分配给所管理的对应小区中边缘用户使用，将中心用户频带分配给所管理的对应小区中中心用户使用，并且对边缘用户采用干扰对齐技术进行干扰管理，对中心用户采用基于干扰的资源避让机制进行干扰管理。When there is no cell to be equalized, the frequency bands of each managed cell are divided into edge user frequency bands and central user frequency bands according to the parameters of edge users and all user parameters in each managed cell; The frequency band is allocated to the edge users in the corresponding cell under management, and the frequency band of the center user is allocated to the center user in the corresponding cell under management, and the interference alignment technology is used for the edge users to manage the interference, and the center user adopts the interference-based resource avoidance. mechanism for interference management.
优选地，所述基于干扰的资源避让机制为：将中心用户所受的干扰分为定向干扰和高功率干扰，对受到定向干扰的中心用户，将其调整至其所在小区内除干扰频段以外的频段，对受到高功率干扰的中心用户，将其调整当前小区内受干扰程度低于在当前频段上受干扰程度的频段；Preferably, the interference-based resource avoidance mechanism is as follows: the interference suffered by the central user is divided into directional interference and high-power interference, and for the central user subjected to the directional interference, the central user is adjusted to a location other than the interference frequency band in the cell where he is located. Frequency band, for the central user who is interfered by high power, adjust it to the frequency band whose interference degree in the current cell is lower than that in the current frequency band;
其中所述干扰频段为其上的中心用户受到的干扰超过预定干扰门限的频段。Wherein, the interference frequency band is a frequency band in which the interference received by the central user exceeds a predetermined interference threshold.
优选地，所述对中心用户采用基于干扰的资源避让机制进行干扰管理之前所述方法还包括将所述中心用户频带划分为多个频段的步骤。Preferably, the method further includes the step of dividing the frequency band of the central user into a plurality of frequency bands before the interference management is performed on the central user by using the interference-based resource avoidance mechanism.
优选地，所述预定值为所述参考信号功率的一个单位值。Preferably, the predetermined value is a unit value of the reference signal power.
优选地，所述方法在干扰管理周期到达时开始执行。Preferably, the method begins execution when the interference management period arrives.
优选地，在判断所管理的小区中是否存在待均衡小区之前所述方法还包括以下步骤：Preferably, before judging whether there is a cell to be equalized in the managed cells, the method further includes the following steps:
判断所管理的各个小区是否为超载小区，其中所述超载小区为其负载超过预定负载门限的小区。Determine whether each managed cell is an overloaded cell, wherein the overloaded cell is a cell whose load exceeds a predetermined load threshold.
优选地，所述根据所管理的各个小区中边缘用户的参数和所有用户参数将所管理的各个小区的频带划分为边缘用户频带与中心用户频带为：取所述边缘用户的参数与所述所有用户参数的比值作为所述边缘用户频带的占用比例，再根据所述边缘用户频带的占用比例在所管理的各个小区的频带中为所述边缘用户分配对应比例的频带作为所述边缘用户频带，并且所述中心用户频带为所管理的各个小区的频带中除去所述边缘用户频带之外的频带。Preferably, dividing the frequency band of each managed cell into an edge user frequency band and a central user frequency band according to the parameters of edge users and all user parameters in each managed cell is: taking the parameters of the edge user and all the user parameters The ratio of the user parameters is used as the occupancy ratio of the edge user frequency band, and then according to the occupancy ratio of the edge user frequency band, a corresponding proportion of the frequency band is allocated to the edge user in the frequency bands of each managed cell as the edge user frequency band, In addition, the central user frequency band is a frequency band other than the edge user frequency band among the frequency bands of the managed cells.
优选地，所述边缘用户的参数包括所管理的各个小区中边缘用户的数量、所管理的各个小区中边缘用户业务量；Preferably, the parameters of the edge users include the number of edge users in each managed cell, and the traffic volume of edge users in each managed cell;
所述所有用户参数包括所管理的各个小区中所有用户的数量、所管理的各个小区中所有用户业务量。The all user parameters include the number of all users in each managed cell and the traffic volume of all users in each managed cell.
一种系统，所述系统包括集中管理器以及簇控制器；A system comprising a centralized manager and a cluster controller;
所述集中管理器包括负载分析模块以及负载均衡模块；The centralized manager includes a load analysis module and a load balancing module;
所述负载分析模块用于根据所述系统管理的各个小区的负载，判断所述系统管理的各个小区中是否存在待均衡小区，其中所述待均衡小区为自身不是超载小区，并且邻小区是超载小区的小区；The load analysis module is used to judge whether there is a cell to be balanced in each cell managed by the system according to the load of each cell managed by the system, wherein the cell to be balanced is not an overloaded cell itself, and a neighboring cell is overloaded the community of the community;
所述负载均衡模块用于在存在所述待均衡小区时，对于每个所述待均衡小区，将该待均衡小区对应的基站发射的参考信号功率提高预定值；The load balancing module is configured to increase the reference signal power transmitted by the base station corresponding to the to-be-balanced cell by a predetermined value for each of the to-be-balanced cells when there is the to-be-balanced cell;
所述簇控制器用于在不存在所述待均衡小区时，根据所述系统管理的各个小区中边缘用户的参数和所有用户参数将所管理的各个小区的频带分别划分为边缘用户频带与中心用户频带；之后将所述边缘用户频带分配给所管理的对应小区中边缘用户使用，将中心用户频带分配给所管理的对应小区中中心用户使用，并且对边缘用户采用干扰对齐技术进行干扰管理，对中心用户采用基于干扰的资源避让机制进行干扰管理。The cluster controller is configured to divide the frequency bands of the managed cells into edge user frequency bands and central user frequency bands according to the parameters of edge users and all user parameters in each cell managed by the system when there is no cell to be equalized. frequency band; then allocate the edge user frequency band to the edge users in the corresponding cell under management, allocate the central user frequency band to the central user in the corresponding cell under management, and use the interference alignment technology to manage the interference of the edge users. The central user adopts an interference-based resource avoidance mechanism for interference management.
优选地，所述基于干扰的资源避让机制为：将中心用户所受的干扰分为定向干扰和高功率干扰，对受到定向干扰的中心用户，将其调整至其所在小区内除干扰频段以外的频段，对受到高功率干扰的中心用户，将其调整其所在小区内受干扰程度低于在当前频段上受干扰程度的频段；Preferably, the interference-based resource avoidance mechanism is as follows: the interference suffered by the central user is divided into directional interference and high-power interference, and for the central user subjected to the directional interference, the central user is adjusted to a location other than the interference frequency band in the cell where he is located. Frequency band, for the central user who is interfered by high power, adjust the frequency band in the cell where the interference degree is lower than the interference degree in the current frequency band;
其中所述干扰频段为其上的中心用户受到的干扰超过预定干扰门限的频段。Wherein, the interference frequency band is a frequency band in which the interference received by the central user exceeds a predetermined interference threshold.
本发明提供了一种干扰管理方法、系统，本发明在干扰管理中首先考虑不同小区的负载均衡，对于自身不是超载小区并且邻小区是超载小区的小区进行负载均衡，降低干扰分布不均衡造成干扰管理的困难；之后，针对边缘用户和中心用户的干扰特点，对边缘用户采用干扰对齐技术进行干扰管理，对中心用户采用基于干扰的资源避让机制进行干扰管理，实现将中心用户和边缘用户分别放置在不同频带上，同时采用不同的干扰管理策略，可以有效解决超密集网络中的干扰问题。The present invention provides an interference management method and system. In the interference management, the present invention first considers the load balancing of different cells, and performs load balancing for cells that are not overloaded cells and adjacent cells are overloaded cells, so as to reduce interference caused by unbalanced interference distribution. Then, according to the interference characteristics of edge users and central users, interference alignment technology is used for edge users to manage interference, and interference-based resource avoidance mechanism is used for central users to manage interference, so that central users and edge users can be placed separately. Using different interference management strategies on different frequency bands can effectively solve the interference problem in ultra-dense networks.
附图说明Description of drawings
为了更清楚地说明本发明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发明的一些实施例，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。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.
图1为本发明的一个较佳实施例的干扰管理方法流程图；FIG. 1 is a flowchart of an interference management method according to a preferred embodiment of the present invention;
图2为本发明另一个较佳实施例的干扰管理方法流程图。FIG. 2 is a flowchart of an interference management method according to another preferred embodiment of the present invention.
具体实施方式Detailed ways
下面结合附图和实施例对本发明作进一步详细描述。以下实施例用于说明本发明，但不能用来限制本发明的范围。The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.
一种干扰管理方法，如图1所示，所述方法包括以下步骤：A method for interference management, as shown in Figure 1, includes the following steps:
S1、根据所管理的各个小区的负载，判断所管理的各个小区中是否存在待均衡小区，其中所述待均衡小区为自身不是超载小区，并且邻小区是超载小区的小区；S1, according to the load of each cell under management, determine whether there is a cell to be balanced in each cell under management, wherein the cell to be balanced is a cell that is not itself an overloaded cell, and a neighboring cell is an overloaded cell;
S2、在存在所述待均衡小区时，对于每个所述待均衡小区，将该待均衡小区对应的基站发射的参考信号功率提高预定值；优选地，所述预定值为所述参考信号功率的一个单位值；S2. When the cells to be equalized exist, for each cell to be equalized, increase the reference signal power transmitted by the base station corresponding to the cell to be equalized by a predetermined value; preferably, the predetermined value is the reference signal power a unit value of ;
S3、在不存在所述待均衡小区时，根据所管理的各个小区中边缘用户的参数和所有用户参数将所管理的各个小区的频带划分为边缘用户频带与中心用户频带；之后将所述边缘用户频带分配给所管理的边缘用户使用，将中心用户频带分配给所管理的中心用户使用，并且对边缘用户采用干扰对齐技术进行干扰管理，对中心用户采用基于干扰的资源避让机制进行干扰管理。S3. When the cells to be equalized do not exist, divide the frequency bands of the managed cells into edge user frequency bands and central user frequency bands according to the parameters of edge users and all user parameters in each managed cell; The user frequency band is allocated to the managed edge users, the central user frequency band is allocated to the managed central users, and the interference alignment technology is used for the edge users for interference management, and the interference-based resource avoidance mechanism is used for the central users for interference management.
上述方法优选地在干扰管理周期到达时开始执行。The above method preferably begins execution when the interference management period arrives.
上述方法针对边缘用户和中心用户的干扰特点，对边缘用户采用干扰对齐技术进行干扰管理，对中心用户采用基于干扰的资源避让机制进行干扰管理，实现将中心用户和边缘用户分别放置不同频带，同时采用不同的干扰管理策略，可以有效解决超密集网络中的干扰问题。Aiming at the interference characteristics of edge users and center users, the above method adopts interference alignment technology for edge users to manage interference, and uses interference-based resource avoidance mechanism for center users to manage interference, so that center users and edge users are placed in different frequency bands, and simultaneously. Using different interference management strategies can effectively solve the interference problem in ultra-dense networks.
进一步地，所述基于干扰的资源避让机制为：将中心用户所受的干扰分为定向干扰和高功率干扰，对受到定向干扰的中心用户，将其调整至其所在小区内除干扰频段以外的频段，对受到高功率干扰的中心用户，将其调整当前小区内受干扰程度低于在当前频段上受干扰程度的频段；其中所述干扰频段为其上的中心用户受到的干扰超过预定干扰门限的频段。此种处理方式通过对干扰类型进行分配处理，实现利用空时频联合进行干扰管理方法，可有效解决超密集网络的干扰问题，该方法同时可以用于LTE\LTE-A系统中。优选地，所述对中心用户采用基于干扰的资源避让机制进行干扰管理之前所述方法还包括将所述中心用户频带划分为多个频段的步骤。Further, the interference-based resource avoidance mechanism is as follows: the interference suffered by the central user is divided into directional interference and high-power interference, and for the central user subjected to the directional interference, it is adjusted to other than the interference frequency band in the cell where it is located. Frequency band, for the central user subjected to high-power interference, adjust it to the frequency band whose interference degree in the current cell is lower than the interference degree on the current frequency band; wherein the interference frequency band is the interference of the central user above the predetermined interference threshold frequency band. This processing method realizes the interference management method using space-time-frequency joint by allocating and processing the interference types, which can effectively solve the interference problem of the ultra-dense network. This method can also be used in the LTE\LTE-A system. Preferably, the method further includes the step of dividing the frequency band of the central user into a plurality of frequency bands before the interference management is performed on the central user by using the interference-based resource avoidance mechanism.
进一步地，在判断所管理的小区中是否存在待均衡小区之前所述方法还包括以下步骤：判断所管理的各个小区是否为超载小区，其中所述超载小区为其负载超过预定负载门限的小区。Further, before judging whether there is a cell to be balanced in the managed cells, the method further includes the following steps: judging whether each managed cell is an overloaded cell, wherein the overloaded cell is a cell whose load exceeds a predetermined load threshold.
进一步地，所述根据所管理的各个小区中边缘用户的参数和所有用户参数将所管理的各个小区的频带划分为边缘用户频带与中心用户频带为：取所述边缘用户的参数与所述所有用户参数的比值作为所述边缘用户频带的占用比例，再根据所述边缘用户频带的占用比例在所管理的各个小区的频带中为所述边缘用户分配对应比例的频带作为所述边缘用户频带，并且所述中心用户频带为所管理的各个小区的频带中除去所述边缘用户频带之外的频带。其中，所述边缘用户的参数包括所管理的各个小区中边缘用户的数量、所管理的各个小区中边缘用户业务量；所述所有用户参数包括所管理的各个小区中所有用户的数量、所管理的各个小区中所有用户业务量。Further, according to the parameters of edge users in each managed cell and all user parameters, the frequency bands of each managed cell are divided into edge user frequency bands and central user frequency bands as follows: taking the parameters of the edge users and all the user parameters The ratio of the user parameters is used as the occupancy ratio of the edge user frequency band, and then according to the occupancy ratio of the edge user frequency band, a corresponding proportion of the frequency band is allocated to the edge user in the frequency bands of each managed cell as the edge user frequency band, In addition, the central user frequency band is a frequency band other than the edge user frequency band among the frequency bands of the managed cells. The parameters of the edge users include the number of edge users in each managed cell and the traffic volume of edge users in each managed cell; the all user parameters include the number of all users in each managed cell, the managed edge users All user traffic in each cell of .
对应于上述方法存在一种系统，所述系统包括集中管理器以及簇控制器；There is a system corresponding to the above method, and the system includes a centralized manager and a cluster controller;
所述集中管理器包括负载分析模块以及负载均衡模块；The centralized manager includes a load analysis module and a load balancing module;
所述负载分析模块用于根据所述系统管理的各个小区的负载，判断所述系统管理的各个小区中是否存在待均衡小区，其中所述待均衡小区为自身不是超载小区，并且邻小区是超载小区的小区；The load analysis module is used to judge whether there is a cell to be balanced in each cell managed by the system according to the load of each cell managed by the system, wherein the cell to be balanced is not an overloaded cell itself, and a neighboring cell is overloaded the community of the community;
所述负载均衡模块用于在存在所述待均衡小区时，对于每个所述待均衡小区，将该待均衡小区对应的基站发射的参考信号功率提高预定值；The load balancing module is configured to increase the reference signal power transmitted by the base station corresponding to the to-be-balanced cell by a predetermined value for each of the to-be-balanced cells when there is the to-be-balanced cell;
所述簇控制器用于在不存在所述待均衡小区时，根据述系统管理的各个小区中边缘用户的参数和所有用户参数将所管理的各个小区的频带划分为边缘用户频带与中心用户频带；之后将所述边缘用户频带分配给所管理的边缘用户使用，将中心用户频带分配给所管理的中心用户使用，并且对边缘用户采用干扰对齐技术进行干扰管理，对中心用户采用基于干扰的资源避让机制进行干扰管理。The cluster controller is configured to divide the frequency bands of the managed cells into an edge user frequency band and a central user frequency band according to parameters of edge users and all user parameters in each cell managed by the system when there is no cell to be equalized; Then, the edge user frequency band is allocated to the managed edge users, the central user frequency band is allocated to the managed central user, and the interference alignment technology is used for the edge users for interference management, and interference-based resource avoidance is used for the central user. mechanism for interference management.
进一步地，所述基于干扰的资源避让机制为：将中心用户所受的干扰分为定向干扰和高功率干扰，对受到定向干扰的中心用户，将其调整至其所在小区内除干扰频段以外的频段，对受到高功率干扰的中心用户，将其调整当前小区内受干扰程度低于在当前频段上受干扰程度的频段；其中所述干扰频段为其上的中心用户受到的干扰超过预定干扰门限的频段。Further, the interference-based resource avoidance mechanism is as follows: the interference suffered by the central user is divided into directional interference and high-power interference, and for the central user subjected to the directional interference, it is adjusted to other than the interference frequency band in the cell where it is located. Frequency band, for the central user subjected to high-power interference, adjust it to the frequency band whose interference degree in the current cell is lower than the interference degree on the current frequency band; wherein the interference frequency band is the interference of the central user above the predetermined interference threshold frequency band.
在超密集网络的干扰管理中，上述系统采用基于簇的集中式干扰管理架构，新的架构中加入集中管理器，它可以获得其管理下的各小区信息，负责多个小区的干扰联合管理，便于小区相互协作共同管理干扰提升系统容量。考虑实际系统中用户呈非均匀分布，太多的用户接入一个站点会造成负载失衡，这将严重影响热点区域的网络性能，无法满足用户的QoS需求，因此，系统在干扰管理时首先分析各小区负载，对负载进行均衡处理。在各小区相对均衡后，干扰管理主要策略为根据用户当前所处小区的位置可以分为中心用户和边缘用户，并将频域资源相应分为边缘频带和中心频带，两种用户分配在相应的频域资源上。簇控制器针对边缘用户的干扰管理采用在协作小区内由簇控制器进行联合编码技术——干扰对齐技术消除干扰；同时对中心用户采用空域、时域和频域联合的干扰管理策略(即基于干扰的资源避让机制)。其中集中管理器管理多个簇，每个簇管理多个基站内的小区。In the interference management of ultra-dense networks, the above system adopts a cluster-based centralized interference management architecture. A centralized manager is added to the new architecture, which can obtain the information of each cell under its management and is responsible for the joint interference management of multiple cells. It is convenient for cells to cooperate with each other to manage interference and improve system capacity. Considering the non-uniform distribution of users in the actual system, too many users accessing a site will cause load imbalance, which will seriously affect the network performance in hotspot areas and cannot meet the QoS requirements of users. Cell load, load balance processing. After each cell is relatively balanced, the main strategy for interference management is that users can be divided into center users and edge users according to the current location of the cell where users are located, and the frequency domain resources are divided into edge frequency bands and center frequency bands accordingly. on frequency domain resources. For the interference management of the edge users, the cluster controller adopts the joint coding technology by the cluster controller in the cooperative cell-interference alignment technology to eliminate the interference; Interfering resource avoidance mechanism). The centralized manager manages multiple clusters, and each cluster manages cells in multiple base stations.
下面结合另一个实施例对上述方法进行进一步地介绍：The above method is further introduced below in conjunction with another embodiment:
本实施例的方法是基于簇的干扰管理方法，包括如下步骤：The method of this embodiment is a cluster-based interference management method, including the following steps:
1、下行干扰管理周期是否达到，如果是，进入步骤2，否则结束。1. Check whether the downlink interference management period is reached, if so, go to step 2, otherwise end.
2、统计干扰管理区域内各个小区与周围相邻小区负载查是否超过门限值，主要为判断自身小区负载是否轻而周围负载重，如果是进入步骤3，否则进入步骤4。2. Check whether the load of each cell in the interference management area and the surrounding adjacent cells exceeds the threshold value, mainly to judge whether the load of the own cell is light and the surrounding load is heavy, if so, go to step 3, otherwise go to step 4.
3、进行负载均衡过程。考虑小区的负载均衡问题，采用参考信号功率CRE偏置值的优化，对于周围负载重而自身负载轻的小区CRE增加一个单位值，以增加负载重的小区边缘用户向负载轻小区迁移，同时用户的下行发送功率不变，以保持整个小区间的干扰水平不变。3. Carry out the load balancing process. Considering the load balancing problem of the cell, the optimization of the reference signal power CRE offset value is adopted, and the CRE of the cell with heavy surrounding load and light load is increased by one unit value, so as to increase the migration of heavy-loaded cell-edge users to lightly-loaded cells. The downlink transmit power of the cell remains unchanged, so as to keep the interference level in the whole cell unchanged.
4、频带资源划分，将干扰管理区域内的总频带分成中心用户频带和边缘用户频带，用于中心用户和边缘用户频域资源分配。其中影响因素为簇内协作小区内所有的边缘用户的数量，总的用户数量，边缘用户业务量需求，所有用户业务量。按照边缘用户参数与所有用户参数比值取小，作为边缘用户占用频域资源比例。干扰管理区域内的总频带减去边缘用户占用的频域带宽作为中心用户的带宽，以上信息与边缘用户信息通知给所有协作小区，告知其进行协作处理。4. Frequency band resource division, divide the total frequency band in the interference management area into a center user frequency band and an edge user frequency band, which are used for frequency domain resource allocation for center users and edge users. The influencing factors are the number of all edge users in the cooperative cell in the cluster, the total number of users, the traffic demand of edge users, and the traffic volume of all users. According to the ratio of edge user parameters to all user parameters, the smaller value is taken as the proportion of frequency domain resources occupied by edge users. The total frequency band in the interference management area minus the frequency domain bandwidth occupied by edge users is used as the bandwidth of the center user. The above information and edge user information are notified to all cooperating cells to inform them to perform cooperative processing.
5、对中心用户采用集中管控，即采用用基于干扰的资源避让机制进行干扰管理，将中心用户频带划分为N个子带，按照不同干扰类型，将中心用户放置不同干扰频带。5. Centralized control is adopted for the central user, that is, the interference management is carried out using the interference-based resource avoidance mechanism, and the frequency band of the central user is divided into N sub-bands, and the central user is placed in different interference frequency bands according to different interference types.
6、处于协作的小区在相同频段上的对边缘用户采用干扰对齐技术的干扰管理。6. The interference management of the cooperating cells on the same frequency band adopts the interference alignment technology to the edge users.
以上实施方式仅用于说明本发明，而非对本发明的限制。尽管参照实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，对本发明的技术方案进行各种组合、修改或者等同替换，都不脱离本发明技术方案的精神和范围，均应涵盖在本发明的权利要求范围当中。The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should cover within the scope of the claims of the present invention.
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