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PCAM协议在单信道MAC协议基础上构建了节点多信道的模型,并提出了新的多信道MAC协议,但是在信道分配方面没有考虑网络实际需求,存在信道使用率低下的问题。文章通过结合路由感知信息在PCAM基础上提出了TIM协议,采用信道冲突模型解决了信道分配问题。仿真结果表明,相比于PCAM,TIM协议网络吞吐量平均提高16.4%,平均时延降低了28.28%,网络性能得到了进一步提升。
The PCAM protocol builds a multi-channel node model based on single-channel MAC protocol and proposes a new multi-channel MAC protocol. However, it does not consider the actual demand of the network in terms of channel allocation, which leads to the problem of low channel utilization rate. In this paper, TIM protocol is proposed based on PCAM based on perceptual information of routing, and the channel assignment problem is solved by channel collision model. The simulation results show that compared with PCAM, the throughput of TIM protocol network increases 16.4% on average, the average delay decreases 28.28%, and the network performance has been further improved.