基于隐藏终端的802.15.4网络丢包率研究  

A Study on the Packet Loss Rate in 802.15.4 Network Based on the Hidden Terminal

作　　者：程宏斌[1] 乐德广[1] 王海军[2] 王晓喃[1] 孙霞[1] 

机构地区：[1]常熟理工学院计算机科学与工程学院,江苏常熟215500 [2]湖北第二师范学院计算机学院,湖北武汉430205

出　　处：《常熟理工学院学报》2017年第4期56-61,共6页Journal of Changshu Institute of Technology

基　　金：江苏省自然科学基金"面向APP应用的安全漏洞分析"(BK20141230);湖北省教育厅科学技术研究计划指导性项目"基于IPV6的车载自组网关键技术研究"(B2014011)

摘　　要：针对基于隐藏终端的802.15.4网络数据丢包问题,提出了一种时隙CSMA/CA算法的数学模型.基于模型推导建立数据丢包概率的数学模型,并研究隐藏终端对数据丢包现象的影响.然后研究不同网络参数如隐藏终端数、λ、N、minBE和NB对数据丢包的影响.实验表明:通过合理的参数配置能够改善网络丢包问题,且相对于不考虑隐藏终端的情形,隐藏终端导致的丢包问题更加严重(高出25.2%).实验结果说明提出的算法模型较好的描述了802.15.4网络实际运行特征.This paper raised a mathematical model of slotted CSMA/CA algorithm, for the sake of the problem of the packet lost in 802.15.4 network based on the hidden terminal. Then the paper established the mathematical model of the packet loss probability based on the mathematical derivation of model, and researched the infuence of the hidden terminal to the packet loss. Moreover, the paper researched the infuence of the network parameters such as the number of hidden terminal、λ、N、minBE and NB to the data packet loss. It is showed by the experimental results that properly settings for parameters could solve the problem of packet loss,and data packet loss caused by the hidden terminal is more serious without regarding the hidden terminal,which is increased by 25.2%. The experimental results show that the proposed algorithm model can better describe the network operation characteristics of 802.15.4.

关 键 词：802.15.4 隐藏终端 丢包率 建模 性能分析 

分 类 号：TP393.03[自动化与计算机技术—计算机应用技术]