基于CSM优先级的CogWMN联合路由与信道分配策略

Joint Routing and Channel Assignment Strategy Based on CSM Priorities in CogWMN

认知无线Mesh网络(CogWMN)中的节点可以自主切换通信频率。当节点寻找路由和分配信道时,容易出现信道分配的不均衡化。为了提高非授权频段的利用率,发挥多信道并行传输的优势,提出一种在没有全局控制信道条件下的基于信道统计度量(CSM)优先级的联合路由与信道分配策略,以解决信道分配不均衡化问题,使网络内节点能以较少的跳数接入AP。仿真结果表明,所提策略能提高网络吞吐量和减少网络时延。

Cognitive Wireless Mesh Networks（CogWMN） can change their communication frequency actively.When they look for routing and schedule channels,channel allocation seems unbalanced commonly.In order to increase the utility of unlicensed bands and the throughput with multichannel,a kind of joint routing and channel assignment strategy based on channel statics metric（CSM） with priorities without common control channel was proposed.This scheme may handle the unbalanced channel allocation problem and the mesh nodes in network can access AP in fewer hops.The simulation result shows that the proposed strategy can increase the throughput performance and reduce network time-delay.