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以多通道的随机多址无线传感器网络为研究对象,通过划分信息分组发送时间为1+a,1时间内以概率p检测,可侦听与控制信道节点数和休眠站点数,从而降低系统耗能,有效延长节点生命周期;a内用非坚持的控制方式,可减少信息分组发送的时延;通过负载均衡,保证系统的吞吐量;通过减少空闲检测时间和忙时发送的碰撞以节省能耗。由此,给出了一种新的随机多址无线传感器网络MAC协议。用平均周期法对系统进行建模,分析得到系统的吞吐量、多业务优先级的吞吐量以及信息分组发送时延等参数。计算机仿真实验结果与理论计算有较好一致性。
Taking the multi-channel randomized multiple access wireless sensor networks as the research object, we divide the information packet transmission time into 1 + a, detect it with probability p within 1 time, detect and control the number of nodes and dormant sites, and reduce the system consumption Can effectively extend the node life cycle; a non-persistent control within the packet can reduce the delay of sending information packets; through the load balancing to ensure system throughput; by reducing the idle detection time and busy collision to save energy Consumption Thus, a new MAC protocol for random multiple access wireless sensor networks is given. The average cycle method is used to model the system and analyze the throughput of the system, the throughput of multi-service priority, and the parameters such as the delay of sending packets. Computer simulation experimental results and theoretical calculations are in good agreement.