煤矿井下无线传感器网络MAC协议设计与改进
首发时间:2010-03-03
摘要:在煤矿井下监控领域,无线传感器网络并没有大规模地应用于煤矿监控,究其原因,是因为没有一种合适的无线传感器网络标准适应井下的特殊环境。为了找出无线传感器网络井下应用的瓶颈,我们建立了IEEE802.15.4标准的数学模型,仿真了IEEE802.15.4标准的井下应用性能,找出了IEEE802.15.4标准存在的不足, 并改进了其CSMA-CA协议中的退避算法,提出了一种适合多跳传输的区分退避算法和中继数据优先策略。并对改进的协议进行了仿真,通过和原协议的对比证明,改进后的协议在吞吐量、延时、丢包率等网络性能上要优于原协议。
关键词: 无线传感器网络 矿井 IEEE 802.15.4标准 MAC协议
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Design and Improvement of Wireless Sensor Network Mac Protocal in Mine
Abstract:There are no network protocols and network equipments that apply to underground large-scale application in coal mine monitoring field, the reason for that is there is no such kind of standards that suitable for the underground special circumstances. In order to find the bottleneck which has limited WSN’s application in coal mine, we establish the normative mathematical model of IEEE802.15.4, simulate IEEE802.15.4 standard in underground application performance, find some existing weaknesses of IEEE802.15.4, improve the CSMA-CA protocol and put forward a Distinguish Backoff Algorithm and Relay Data Priority Strategy suitable for multiple hop transmission. We also simulate the improved MAC protocol, in contrast with the original protocol, we find the network performance of improved MAC protocol such as the throughput, delay and packet loss rate is better than the original one.
Keywords: wireless sensor networks coal mine IEEE 802.15.4 MAC protocol
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No.4036051762712675****
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