一种新的移动Ad Hoc网络的单忙音码分多址协议  

Single busy tone CDMA—a novel multiple access protocol for the mobile ad hoc network

作　　者：周晓东[1] 李建东[1] 杨军[1] 

机构地区：[1]西安电子科技大学综合业务网国家重点实验室,陕西西安710071

出　　处：《西安电子科技大学学报》2005年第4期587-592,共6页Journal of Xidian University

基　　金：国家自然科学基金和微软亚洲研究院联合资助项目(69872028);国家"863"计划重大课题(2001AA123031);高等学校优秀青年教师教学科研奖励计划资助项目;教育部科技研究重点项目(104171);国家自然科学基金重大项目(60496316)

摘　　要：针对移动AdHoc网络(MANET),提出了一种新的多址接入协议———单忙音码分多址协议(SBT-CDMA).协议综合使用了RTS/CTS短分组握手机制、忙音信号、功率控制和CDMA技术来提高网络性能.利用RTS/CTS分组进行码字分配和功率控制信息交换;利用忙音信号计算值与测量值之间的区别,来决定节点是否可以进行RTS分组的发送.该协议减少了分组碰撞,提高了网络的吞吐量,并降低系统功耗,同时有效解决了在MANET中采用CDMA组网方式时的远近效应问题.A single busy tone code division multiple access （SBT-CDMA） protocol for the mobile ad hoc network（MANET） is proposed. The RTS/CTS handshake mechanism, busy tone and power control are integrated with CDMA to improve the network performance. The RTS/CTS dialogue is used for the CDMA-code allocation and exchange of the power control information. Base on the difference between the calculated value and measured value of the received busy tone power, a node can ascertain whether the node could initialize an RTS packet transmission. Simulation results show that SBT-CDMA can significantly reduce the packet collision and increase the network throughput with lower energy consumption, and the near-far problem in the CDMA network is also overcomed.

关 键 词：移动AD Hoc网络 忙音 功率控制 码分多址 网络吞吐量 

分 类 号：TN915.04[电子电信—通信与信息系统]