认知无线传感网在规则拓扑中的媒体接入调度方法

The Scheduling Method for Media Access in Cognitive Wireless Sensor Network with Regular Topology

针对多种规则拓扑结构,探讨基于TDMA和认知无线电的媒体接入调度策略;为Square、Hexagon和Triangle结构设计时隙和信道组合选择算法,并分析比较了对应的开销和吞吐量,指出Square结构具有最佳的传输性能;基于OMNet++平台下面向Square结构的仿真实验,指出Square中的4时隙调度方法提供最佳的传输性能,且较小的时隙长度有益于提升吞吐量.

Explore the media access scheduling methods based on TDMA and cognitive radio for regular topology structures .Design timeslot and channel selection algorithm for such topologies as Square ,Hexagon and Triangle , analyze on the cost and maximal throughput of these methods , and point out that Square yields the optimal transmission performance .The OMNet+ + based simulation experiment for Square topology verified the superiority of 4-timeslot scheduling method ,and showed that smaller timeslot helps to increase throughput .