一种应用于桥载设备监控网络CSMA/CA机制算法

在机场桥载设备在线监测管理网络的现场应用测试中,针对网络突发事件中高优先级节点传输延时长,节点能耗利用率低的问题,采用基于优先级调度策略思想的网络节点能量优化机制,对网络MAC层协议中的CSMA/CA算法参数做出调整,达到数据快速传输的目的,利用NS2软件进行网络仿真,结果表明该方法提高了高优先级节点的信道访问率,均衡了网络能耗并延长了网络生命周期。

A Algorithm CSMA/CA Mechanism Used In Bridge Monitoring Network

For long transmission delay of emergency high priority node and low node energy consumption utilization ratio in on-line ManagementS SMonitoring System of CPU exposed in field testing at the airport, energy optimization mechanism based on priority scheduling approach is adopted to adjust the parameters of CSMA/CA algorithm on MAC layer protocol of wireless sensor network, can deal with the above issues and achieve the target of fast data transmission. At last, NS2 is applied to simulate network. The experimental result shows that the access rates of high priority node is improved, network consumption is balanced and the network life cycle is extended.