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2011 Chinese Control and Decision Conference（CCDC）

作者： Peng Ji is with the Institute of Artificial Intelligence and Robot,Northeastern University,Shenyang,110819,China.Chengdong Wu is with the Institute of Artificial Intelligence and Robot,Northeastern University,Shenyang,110819,China.Jian Zhang is with the Institute of Artificial Intelligence and Robot,Northeastern University,Shenyang,110819,China.Tianbao Wang

Wireless sensor network （WSN） is a data-centric intelligent monitoring system and data transmission is the routine *** the communication resource of WSN is very limited is most pivotal function,communication reliability becomes one of the most pivotal ***,the lack of wireless link and the loss of data make the study of communication reliability *** solve these problems,a nodes cooperation based multi-path transmission protocol （NCMPT） is proposed in this *** this protocol,network is divided into several hierarchy areas,and a clustering construction mechanism is studied to take the amount of nodes in each clustering to meet the requirement of reliable *** this basis,the selection strategy of optimal intermediate node is ***,a supporting data relay clustering of nodes is constructed,and the nodes cooperation based data synchronized reception scheme and asynchronized competition relaying scheme is studied to enables the end-to-end data transmission to be more reliable and *** testify the performance of proposed protocol,a simulation experiment is designed,and the results show the proposed protocol can get improvement in communication reliability and time-delay.

关键词： Wireless sensor network communication reliability transmission protocol nodes cooperation optimal relay node.

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Simulation Study of the Influence of the Hidden and Exposed Stations for the Efficiency of IEEE 802.15.4 LR-WPAN Networks

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Wireless Sensor Network 2010年第1期2卷 7-17页

作者： Dariusz KOSCIELNIK AGH University of Science and Technology Department of ElectronicsKrakówPoland

This article presents an analysis of wireless personal area networks with low transmission rate, utilized more and more often in industrial or alarm systems, as well as in sensor networks. The structure of these systems and available ways of transmission are defined by the IEEE 802.15.4 standard. The main characteristics of this standard are given in the first part of this article. The second part contains the description of simulation tests that have been realized. Their results make available an evaluation of the effective transmission rate of a transmission channel, the resistance to the phenomenon of hidden station as well as sensibility to the problem of the exposed station.

关键词： Wireless Network Sensor Network Lr-Wpan Csma/Ca Slotted-Csma/Ca transmission protocol Hidden Station Exposed Station

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