摘要
无线Mesh网络中移动节点的数据包冲突问题,严重降低了网络的吞吐率和能量利用率。针对该问题,对现有XMAC协议进行优化,提出移动MX-MAC协议。在移动节点和非移动节点通信的情况下,增加退避机制,每个节点在发送数据之前进行退避。仿真结果表明,MX-MAC协议能够增加无线Mesh网络的生存周期,降低无线Mesh节点的碰撞和串听几率。
The problem of collisions in mobile nodes of wireless Mesh networks seriously reduces the network throughput and the energy efficiency.To solve this problem,MX-MAC protocol developed based on X-MAC was proposed.Under certain conditions of communication between mobile nodes and fixed node,a retreat mechanism was added into MX-MAC protocol and each node was retreated before sending data.Results of simulation show that MX-MAC protocol is effective on increasing the lifetime of wireless Mesh networks and on reducing the probability of collision and overhearing wireless Mesh nodes.
出处
《计算机工程与设计》
北大核心
2017年第3期566-570,共5页
Computer Engineering and Design
基金
重庆市研究生教学改革研究基金项目(yjg143097)
