一种多信道混合方式的无线传感器网络MAC协议

为了提高无线传感器网络的吞吐量,降低时延,本文设计了一种多信道MAC协议——MCHMAC。它采用调度和竞争访问机制相结的混合方式来传输信息,通过动态调整节点的活跃与睡眠状态的时长来节省能量。MCHMAC使用信道状态估计算法对信道进行评估,利用信道调度表来为节点调度状态最优的信道。仿真实验结果证明,本协议提高了吞吐量,降低了网络时延。

A multichannel hybrid MAC protocol for wireless sensor networks

In order to improve wireless sensor networks throughput and reduce time delay, a multichannel MAC protocol called MCHMAC is designed, which use contention based and scheduled based hybrid access mechanism to transmit information, the energy is saved by dynamically adjusts the active and sleep time of nodes. MCHMAC use channel state estimation algorithm to evaluate channel, it also proposes to find a best channcl by a channel schedule table for nodes. Experimental results show that this protocol improves the throughput and reduces the network delay.