Ad hoc网络隐藏/暴露终端问题的研究  

The Discuss of Solving the Hidden and Exposed Terminal Problems in Ad Hoc Network

作　　者：吴笑萍[1] 

机构地区：[1]江西景德镇市景德镇高等专科学校,333000

出　　处：《微计算机信息》2006年第10X期35-37,15,共4页Control & Automation

基　　金：湖北省重点科技攻关项目(2003AA101B05)资助

摘　　要：本文介绍了adhoc网络的概念,分析了其信道共享方式.从而,引出由于adhoc信道共享方式的不同而导致的隐藏终端和暴露终端的问题.它严重地影响了信道接入协议的性能,影响网络的吞吐量和信道的利用率和公平性.本文详细地对这一问题进行了分析,介绍了几种解决这一问题的MAC接入协议,并对其中最成功DCMA_CSBI协议进行了详细的阐述,说明其是如何解决这一问题的.最后还提出了可能解决这一问题的其他的研究方向.this paper introduces the conception of the ad hoc network and analyzes the way of channel sharing which educes the hidden and exposed problems in ad hoc network. The problem affects the throughput of the network, the utilization and the fairness of the channel, which greatly debase the performance of the MAC protocols. This paper analyses the problems in detail, and introduces a few MAC protocols which can solve the problems in different extent in ad hoc network. Especially, DCMA_CSBI can solve the problems perfectly. But few papers explained the process integrally and detailedly. So this paper divides the time into many sequential time slices and presents the concrete process of solving the problems. Finally, it also gives other methods which are worthy of researching to solve the problems.

关 键 词：隐藏终端 暴露终端 双忙音多址接入 载波监听 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TN929.5[自动化与计算机技术—计算机科学与技术]