基于选择性扫描的无线Mesh网信道扫描算法

Switching Strategy of Wireless Mesh Network Channel Based on Selective Scanning

针对轨道交通的无线M e s h网络信道切换存在时延问题,提出了一种基于选择性信道扫描算法。通过最小化信道扫描数目,以减少探测时延;并从理论分析了选择性信道扫描与全信道扫描的切换探测时延,并通过OPNET对切换场景进行仿真分析。仿真结果表明:与全信道扫描算法相比,选择性信道扫描算法可降低切换时延约130 ms,能有效提高轨道交通无线Mesh网络的性能。

In the view of the problem of rail traffic in wireless mesh network channel switching, puts forward a channel switching strategy based on selective scanning. Reduces the detection delay by minimizing the number of channel scanning,analyses theoretically the selective channel scanning and full channel scanning switching detection delay, and simulates the switching scene through the OPNET. The experimental results show that compared with the full channel scanning algorithm, the selective channel scanning switching strategy can effectively improve the performance of the wireless MESH network by reducing the switching delay of about 130 ms.