基于自适应更新的无线传感网络MAC协议  

MAC protocol based on adaptive update in wireless senor networks

作　　者：刘明珠[1] 许士涛[1] 陈光[1] 

机构地区：[1]哈尔滨理工大学测控技术与通信工程学院,哈尔滨150080

出　　处：《计算机应用》2012年第12期3508-3511,共4页journal of Computer Applications

基　　金：黑龙江省教育厅科学技术研究项目(12521087)

摘　　要：针对无线传感器网络节点能量受限问题,提出了一种新的自适应更新异步MAC协议——AU-MAC协议。该协议以睡眠与工作状态切换、异步方式和自适应更新相结合的办法有效延长了网络寿命,减少了节点能耗。AU-MAC协议通过采用发方监听、接方激活数据传输,提高了信道利用的有效性。并且,它以建立邻居节点信息表,引入自适应更新机制,来减少空闲监听。在NS2网络仿真平台对提出的AU-MAC协议的性能进行了仿真评估。仿真结果表明,AU-MAC协议在保持相当的吞吐量以及端—端延迟的基础上,使无线传感器网络的能量有效性得到了改善。In order to solve the energy limitation problem on wireless sensor network nodes,this paper proposed a new adaptive update asynchronous MAC protocol — AU-MAC protocol.This protocol combined the sleep-work state switching mode,asynchronous mode with adaptive update to effectively extend the network life.AU-MAC protocol improved channel usage efficiency by making use of sender monitoring and receiver activating data transfer.And,it established a neighbor node information table and introduced adaptive updating mechanism,to reduce the free monitor.The functions of AU-MAC protocol had been estimated on NS2 network simulation platform.It shows that,AU-MAC protocol improves the energy efficiency at the basis of maintaining the same throughput and end-end transit delay.

关 键 词：无线传感网络 媒体访问控制 异步 自适应更新 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TN915.04[自动化与计算机技术—控制科学与工程]