考虑用户QoS的基于图论的干扰协调方案

A QoS-Aware Graph-Based Scheme for Inter-Cell Interference Coordination

为了提高小区边缘用户的性能,提出了一种基于图论的考虑用户业务质量(QoS)的干扰协调方案.把无线资源分配问题映射成图论中的着色问题,同时考虑不同用户分到不同数量资源的场景,即一个点会需要不仅一种颜色的情况,引入了用户资源分配方式,并利用增强SEQ(sequential)着色算法解决该问题.仿真结果表明,提出的方案在不降低小区平均吞吐量的同时,能有效提升边缘用户的性能.

In order to improve the cell edge users＇ performance, a quality of service-aware inter-cell in- terference coordination method using a graph-based approach was proposed. Considering that the users may require a different quantity of physical resource blocks, the problem of assigning the radio resource to the users was modeled as the graph colouring. To solve the problem, an improve sequential colouring method for introducing resource allocation type was applied. Simulation shows that the proposed scheme could effectively increase the cell edge users＇ performance and the cell average throughout.