一种新型的WiMAX基站实时服务调度算法

为满足Wi MAX对Qo S的需求并克服MSIR调度算法存在的不足,本文提出了一种新型的基于截止期限最大信号干扰比的Wi MAX基站实时服务调度算法。这种算法根据链路质量和截止期限两个标准对数据包进行调度。首先从Wi MAX调度算法的Qo S架构出发,给出了信道模型;其次详细分析了本文提出方法的具体实现过程;最后,借助NS-2软件平台进行了建模与仿真。仿真结果表明,本文提出的方法减小了平均停留时间并有效提高了吞吐量和公平性指数,因此具有可行性和可靠性。

A Novel Scheduling Algorithm of Real Time Services for WiMAX Base Station

To satisfy the demand of Quality of Service（Qo S）and overcome the deficiencies existing in Maximum Signal to Interference Radio（MSIR）,a novel scheduling algorithm based on Deadline Maximum Signal to Interference Radio（DMSIR）for real time services in Wi MAX base station is proposed in this paper.This algorithm schedules data packets based on two criterias of link quality and deadline.Starting from the Qo S architecture of scheduling algorithm for Wi MAX,the channel model was given.Then,the concrete realization course of the proposed method was analyzed in detial.Finally,the modeling and simulation were performed by NS-2 software.Simulation results show that the proposed method decreases mean sojourn time and improves throughout and fairness index effectively,so it has feasibility and reliability.