基于业务QoS保证的中继系统资源分配算法

Resource allocation algorithm for relay systems based on QoS guarantees

在基于正交频分多址(OFDMA)的中继系统中,为了满足用户的QoS要求,在保证系统的吞吐量最大的同时又保证用户公平性,给出了一种面向业务服务质量的资源分配算法。首先根据用户在队列中的等待时延和用户对速率的需求引入时延优先级因子和速率优先级因子,以此计算用户的优先级;然后分别在回程链路和接入链路进行动态资源调度与分配。仿真结果表明,新算法能够兼顾中继用户和直传用户的性能,实现低丢包率,较好地满足GBR需求,实现较高的系统吞吐量和公平性。

In the relay system based on OFDMA,in order to meet the user's QoS requirements,ensure that the system throughput and user fairness,this paper proposed a resource allocation algorithm for business service quality. First according to the user's waiting delay in the queue and the user's demand for the rate,it introduced the delay priority factor and the rate priority factor to calculate the user's priority. And then it dynamically allocated resources on the backhaul link and the access link respectively. The simulation results show that the new algorithm can balance the performance of relay users and direct transmission users,achieve low packet loss rate,better meet the GBR requirements,and achieve higher system throughput and fairness.