一种基于服务质量的资源分配算法

A resource allocation algorithm based on the quality of service

为改善正交频分多址接入下行资源分配系统的吞吐量并满足用户对多业务的要求,根据比例公平算法设计出一种基于服务质量的资源分配算法。该算法以比例公平算法为基础,根据用户在队列中的等待时延、用户对多业务的要求以及信道信息状况,设计出公平性因子和多业务因子,并以此计算出用户优先级,再根据用户优先级动态的分配资源。仿真分析表明,与传统算法相比,该算法在提高系统吞吐量的同时可改善其公平性。

To improve the throughput of orthogonal frequency division multiple access downlink resource allocation system and meet user requirements of multi-traffic, a quality of service based resource allocation algorithm is proposed on the basis of proportional fairness algorithm. Based on the proportional fair algorithm and according to the user waiting delay in the queue ,the user requirements of multi-traffic and channel conditions, this algorithm is used to designe the fairness. factor and multi-traffic factor and then to calculate the user Priority for dynamically allocating resource. The simulation results indicate that the throughput and fairness of the system are improved compared with traditional algorithm.