Interference coordination method based on resource allocation

Abstract

The invention provides an interference coordination method based on resource allocation. The method comprises the following steps: 1) determining interference base stations for users; 2) determining an interference graph with the users as nodes according to the interference base stations; 3) and carrying out resource allocation by using a graph coloring method according to the interference graph. According to the interference coordination method provided by the invention, resources orthogonal to the interference base stations of the users are selected for the users so as to avoid inter-cell interference, and the number of resources allocated to the users and the priorities of the acquired resources are adjusted according to the QoS requirements of different users. The interference coordination method provided by the invention is a user-centered interference coordination method based on resource allocation, the proportions of the acquired resources of cells are adjusted according to actual user needs of the cells, and thus the problem of inter-cell load imbalance in a super dense cellular network can be solved.

Description

technical field [0001] The present invention relates to wireless communication, in particular to wireless resource management. Background technique [0002] With the popularization of smart terminals and the application of mobile Internet, mobile data traffic has shown explosive growth. In order to meet the ever-increasing demand for mobile data, provide higher transmission rates, and increase the density of access points, ultra-dense networking has become one of the most important technical means. However, dense access points will lead to serious interference among cells, which restricts system capacity and QoS for edge users. Therefore, it is necessary to adopt an interference coordination method to set certain restrictions on downlink resources of a cell, thereby reducing inter-cell interference. [0003] Frequency reuse is a direct and effective method. However, the traditional frequency reuse method based on an idealized regular hexagonal cell cannot be directly appli...

AI Technical Summary

Problems solved by technology

[0005] 1. For the interference coordination resource allocation method centered on the base station, it often needs to adopt a large frequency reuse factor (for example, 10 or more), which makes the reuse efficiency of spectrum resources very low, and it is difficult to Meet the data transmission rate requirements of most users;

[0006] 2. Moreover, due to the large difference in the number of users in each cell in an ultra-dense cell, the user's QoS requirements are diversified, and it is difficult to deal with the problem of unbalanced load among cells in an ultra-dense network by using the existing resource allocation method

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