MHWSN中保证混合业务QoS的跨层调度算法

摘要

To efficiently support the diverse Quality of Service(QoS) of hybrid service in middle and high rate sensor networks (MHWSN). A scheduling algorithm named AM-LWDF based on cross-layer optimization is proposed with guaranteed divers QoS in this paper.A mathematical formulation is provided with the goal of maximizing throughput under real-time service QoS constraints considering both the delay priority and throughput priority.lt guarantees smaller delay in real-time service and larger throughput in non real-time service.Simulations show that the scheme can achieve compromise between delay and throughput flexibly and guarantee fairness among different user.%针对中高速传感器网络中混合业务QoS(Quality of Service)要求,跨层考虑物理层和数据链路层参数,提出了一种保证混合业务服务质量的调度算法AM-LWDF.该算法同时考虑时延优先级和吞吐量优先级,在满足实时业务QoS约束的前提下,以最大化系统吞吐量为目标建立了相应的优化模型,对实时业务能够满足时延较小的要求,对非实时业务满足吞吐量较大的要求.仿真结果表明,该调度算法可以灵活地在时延和吞吐量之间取得满意的折衷,并保证不同类型业务用户间的公平性.