Computer Science ›› 2012, Vol. 39 ›› Issue (2): 105-108.

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

YANG Guo-yan,ZHANG Guo-yin   

  • Online:2018-11-16 Published:2018-11-16

Abstract: 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. 11 IX;F协议比较,LAC"I'-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。

Key words: Wireless sensor networks, Exposed terminal, Concurrent transmission, MAC protocol

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