无线Mesh网中一种流量感知和干扰优化的信道分配机制

Traffic-aware and interference optimized channel assignment mechanism in wireless Mesh network

在当前通信标准提供的正交信道有限的前提下,针对重叠信道间的干扰问题,提出了一种内部流量感知和干扰优化的半动态分布式信道分配机制。采用启发式算法,根据网络流量进行信道避让,通过多轮随机选取最优信道。模拟仿真实验表明,在网络流量大的前提下,相较几种经典的信道分配算法,该算法在传输成功率及数据传输平均延迟上均有明显的优势。

Based on the limitation of orthogonal channels provided by communication standard,this paper proposed a mechanism of semi-dynamic and distributed channel assignment focusing on the interference of overlapped channels,of which the internal traffic and interference could be aware. Useing heuristic algorithm and channel avoidance based on network＇s traffic to select a better channel for several round randomly. Simulation proves that given a prerequisite of high throughput,the performance on delivery ratio and average delay of data transmission is obviously better than several classical channel assignment algorithms.