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方向性天线对MANETs路由协议的性能影响研究

A Study on the Effect of Directional Antenna on Performance of Routing Protocols for Mobile Ad Hoc Networks
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摘要 本文研究了方向性天线对DSR路由协议性能的影响。通过仿真证明了,当使用方向天线进行分组发送时,由于网络节点获取拓扑信息的效率降低,导致协议的分组交付率降低和路由开销数量增加。分折了此现象产生原因,并提出了一个改进方法;由DSR协议参与控制分组发送时使用的天线模式,对部分影响协议性能最为严重的分组采用全向发送,其余分组使用方向天线发送。仿真证明了使用该方法后,可以明显改善协议性能。 The effect of directional antenna on the performance of DSR routing protocol is studied in this paper. Sim- ulation results prove that the performance of DSR descends in terms of packet delivery ratio and number of total rout- ing packets,when directional antenna is used. The reasons are analyzed,and a modification method is presented, in which DSR controls antenna pattern used by transmitting node,part of packets are sent with omni-antenna and the others are sent with directional antenna. Simulation results also prove this modification can improve performance of DSR protocol effectively.
出处 《计算机科学》 CSCD 北大核心 2005年第3期39-42,共4页 Computer Science
基金 国家自然科学基金 微软亚洲研究院联合资助项目(60372048) 高等学校优秀青年教师教学科研奖励计划 国家自然科学基金60390540第6子课题 国家863计划重大课师(2001AA123031) 教育部科学技术研究重点项目(01162)
关键词 方向性天线 MANETs路由协议 性能 DSR路由协议 无线通信 Mobile ad hoc network Directional antenna Routing protocol
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参考文献5

  • 1Takai M,Martin J,Bagrodia R. Directional Virtual Carrier Sensing for Directional Antennas in Mobile Ad Hoc Networks. Intl. Conf.on Mobile Computing and Networking. In:Proc. of the 3rd ACM international symposium on Mobile ad hoc networking & computin,New York,NY,USA: ACM Press ,2002. 183-193.
  • 2Bellofiore S, Balanis C A. Smart-Antenna Systems for Mobile Communication Networks. IEEE Antenna's and Propagatoion Magazine,2002,44(3):145-154.
  • 3Johnson D B,Maltz D A,Hu Yih-Chun,Jetcheva J G. The Dynamic Source Routing Protocol for Mobile Ad Hoc Networks (DSR).Internet Draft,draft-ietf-manet-dsr-09. txt, April 2003.
  • 4LAN/MAN Standards Committee of the IEEE Computer Society.Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications. IEEE Std. 802.11 [S], 1999.
  • 5Yum T S,Hung K W. Design Algorithms for Multihop Packet Radio Networks with Multiple Directional Antennas Stations. IEEE Transactions on Communications,1992,40(11): 1716-1724.

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