一种带有降级机制的无线Mesh网络调度策略

针对IEEE 802.16标准Mesh模式MAC层调度算法的不足,提出了一种带有降级机制的调度策略(Grading Scheduling Algorithmwith Degradation,简称GSAD)。算法综合考虑IEEE 802.16标准中规定的传输优先级、最小保留速率、最大保持速率和最大延迟四个QoS参数。通过降级的机制控制服务流的调度顺序和带宽分配大小,完成对数据的调度。实验结果表明,GSAD算法具有较高的时效性,并且能够有效保证不同多媒体业务的QoS。

A Scheduling Strategy for Wireless Mesh Network with Degradation

For the deficiencies of existing scheduling algorithms,the paper proposes a coordinated dis- tributed scheduling algorithm with degradation-GSAD（Grading Scheduling Algorithm with Degrada-tion）.The algorithm takes into account the IEEE 802.16 standard transmission priority,the minimum reten-tion rate,maximum retention rate and the maximum delay of the four QoS parameters.Simulation shows that the algorithm has high efficiency,and can ensure the QoS of different multimedia services.