一种基于节点位置信息的无线传感器网络并行传输MAC协议  

Concurrent Transmission MAC Protocol for Wireless Sensor Network Based on Nodes' Geographical Location Information

作　　者：杨国燕 张国印[1] 

机构地区：[1]哈尔滨工程大学计算机科学与技术学院,哈尔滨150001 [2]黑龙江大学信息科学与技术学院,哈尔滨150080

出　　处：《计算机科学》2012年第2期105-108,共4页Computer Science

基　　金：国家自然科学基金(61073042);哈尔滨市科技创新人才研究专项资金项目(2011RFDXG005)资助

摘　　要：针对无线传感器网络多跳通信方式产生的暴露终端问题,提出了一种基于地理位置信息的高效并行传输LACT-MAC协议。该协议突破了传统基于CSMA协议对并行传输的限制,利用节点地理位置信息实现了暴露终端的并行传输,有效地提高了宝贵无线信道资源的复用效率。分析了根据节点的位置坐标并行传输暴露终端节点的可行性,并通过并行传输检测完成了传输过程。仿真结果证明,与标准的IEEE 802.11DCF协议比较,LACT-MAC协议能显著提高网络的平均吞吐量,降低数据传输延迟,有效提高无线传感器网络效率和性能。Aiming at the exposed terminal problems in multi-hop wireless sensor networks,this paper proposed the efficient concurrent transmission LACT-MAC protocol based on geographical location information.The protocol breaks through the limit of concurrent transmission based on traditional CSMA MAC protocols,for this protocol exploits nodes＇ geographical location information to achieve the concurrent transmission of exposed terminal,so as to enhance the reuse efficiency of the valuable wireless channel resources.According to the location coordinates of the nodes,this paper explored the feasibility analysis of concurrent transmission of exposed terminal node,and completed the concurrency check.Simulation results show that,compared to IEEE 802.11 DCF protocol,LACT-MAC protocol can significantly improve the average throughput of the network,reduce data transmission delay,and effectively improve the efficiency and performance in wireless sensor networks.

关 键 词：无线传感器网络 暴露终端 并行传输 MAC协议 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]