Transmission performance of wireless sensor networks in the presence of co-channel interference

Jin-Seok Han, Jae-Seok Bang, Yong-Hwan Lee
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引用次数: 2

Abstract

Wireless sensor networks operating in 2.4 GHz ISM band are seriously affected by interference from coexisting radio systems such as IEEE 802.11× wireless local area networks. In this paper, we investigate the transmission performance of wireless sensor networks in the presence of co-channel interference. We first analyze the probability of transmission failure and data throughput associated with transmission schemes in interference environments. The transmission schemes are modeled using a Markov chain taking into account the detection probability of channel sensing detector and the interference channel characteristics. Then, we determine the packet size to maximize the data throughput in the presence of co-channel interference. It is shown that the data throughput and energy consumption are affected by the packet size, data transmission rate, data transmission scheme, detection probability of channel sensing detector, and interference channel characteristics.
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存在同信道干扰时无线传感器网络的传输性能
工作在2.4 GHz ISM频段的无线传感器网络受到IEEE 802.11 x无线局域网等共存无线电系统干扰的严重影响。本文研究了存在同信道干扰时无线传感器网络的传输性能。我们首先分析了在干扰环境下与传输方案相关的传输失败概率和数据吞吐量。考虑信道感知检测器的检测概率和干扰信道的特性,采用马尔可夫链对传输方案进行建模。然后,我们确定包的大小,以最大限度地提高数据吞吐量在共信道干扰的存在。研究表明,数据包大小、数据传输速率、数据传输方式、信道感知检测器的检测概率和干扰信道特性等因素对数据吞吐量和能量消耗都有影响。
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