支持功率和速率控制的自组网MAC协议研究  

Survey on joint power control and multi-rate MAC protocols

作　　者：林丛[1] 向勇[1] 

机构地区：[1]清华大学计算机科学与技术系,北京100084

出　　处：《计算机应用》2008年第8期1946-1950,共5页journal of Computer Applications

基　　金：国家自然科学基金资助项目(60273010);清华信息科学与技术国家实验室基础研究基金

摘　　要：首先分析了自组网中以节能为目的的功率控制以及多速率技术,然后详细介绍了当前典型的结合二者进行综合优化的MAC协议,从优化目标选择、工作方式、信息来源等方面对比分析了这些协议的特点、性能及缺陷,指出该类的MAC协议的研究难点,对其他节点的状态了解不充分和度量指标难于反映综合优化目标。最后提出可能的改进方向。This article carried out a survey of the power control technique for energy-saving and the multi-rate feature in MANETs, with particular emphasis on typical Medium Access Control （MAC） protocols with combined techniques of powercontrol and multi-rate capabilities. Their characteristics, performance and deficiency were compared adequately in terms of optimization goal selection, process method and information exchange. The difficulties in designing MAC protocols taking account of both power-control and multi-rate capabilities including the status of wireless nodes is hard to be fully explored by other nodes and the control metrics cannot accurately achieve the optimization goal. Finally, future trends were predicted.

关 键 词：功率控制 速率自适应 媒体访问控制 综合优化 

分 类 号：TP393.03[自动化与计算机技术—计算机应用技术]