一种基于时隙分组的时隙型CSMA/CA改进算法的研究与实现
首发时间:2011-11-22
摘要:本文提出了一种基于时隙分组的时隙型改进CSMA/CA信道访问机制,可以有效地解决当无线传感器网络数据业务量较大时所产生的丢包率严重、节点能耗过大以及网络吞吐量较低的问题。本文首先采用NS2网络仿真软件对改进后算法进行能耗和吞吐量性能的仿真,之后在自主开发的DLUTWIA-PA平台上针对于OpenZB项目组所实现的Zigbee协议进行CSMA/CA的改进,以验证改进后的算法的可行性。
关键词: ZigBee CSMA/CA 时隙分组 无线传感器网络
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The Research and Implementation of Improved Slotted CSMA/CA Algorithm Based on Slot Group
Abstract:This paper proposes a kind of improved slotted CSMA / CA channel access mechanism based on time slot group which can solve the problems of high packet loss rate, high node energy consuming and low network throughput. Firstly this paper uses the network simulating software NS2 to give a performance simulation of improved CSMA/CA algorithm on energy consuming and throughput and then validates its performability on the self-developing platform DLUTWIA-PA based on the Zigbee protocol implemented by OpenZB group.
Keywords: ZigBee CSMA/CA slot group wireless sensor network
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