Study on IEEE802.15.4 link reliability in industrial environment

IEEE International Conference on Wireless for Space and Extreme Environments Pub Date : 2013-11-01 DOI:10.1109/WISEE.2013.6737570

W. Yadong, Duan Shihong

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引用次数: 3

Abstract

As the first step of the WSN protocol design, such as MAC layer and Network layer, in-depth investigation on link characteristics is very important. In the industrial environments, link reliability is vulnerable to various interferences. Therefore, many schemes have been employed for reliability improvements, e.g. frequency diversity, path diversity etc., which put forward the demand on link reliability model. However, there has been little work modeling the temporal and frequency variations of the link reliability. The contributions of this paper are modeling the link characteristics of IEEE802.15.4 radio transceiver on all 16 channels based on Packet Drop Rate (PDR) data sets collected in typical factories and a link layer reliability model (LLSM), which focuses on the quantitative relationships among link reliability, time and frequency. It is found that the PDR in a certain range follows logistic or log-logistic distribution, and the interval of two sequential failed in Packet Drop Sequence (PDS) follows log-normal distribution. The model is implemented as simulation framework component and used to evaluate the influence on frequency diversity design by the simulation of two proposals of IEEE 802.15.4e.

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工业环境下IEEE802.15.4链路可靠性研究

作为无线传感器网络MAC层和网络层等协议设计的第一步，对链路特性的深入研究是非常重要的。在工业环境中，链路的可靠性容易受到各种干扰。因此，人们采用了多种方案来提高可靠性，如频率分集、路径分集等，这就对链路可靠性模型提出了要求。然而，对链路可靠性的时间和频率变化进行建模的工作很少。本文的贡献是基于典型工厂的丢包率(Packet Drop Rate, PDR)数据集和链路层可靠性模型(link layer reliability model, LLSM)对IEEE802.15.4无线收发器在所有16个信道上的链路特性进行建模，该模型关注链路可靠性、时间和频率之间的定量关系。发现PDR在一定范围内服从logistic或log-logistic分布，PDS中两次连续失败的间隔服从对数正态分布。该模型作为仿真框架组件实现，并通过对IEEE 802.15.4e两种方案的仿真来评估其对频分集设计的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE International Conference on Wireless for Space and Extreme Environments

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