微网结构无线ad hoc网络的容量区研究  

Capacity Regions of Wireless Piconet-Based ad hoc Networks

作　　者：翟旭平[1] 毕光国[2] 徐平平[2] 

机构地区：[1]上海大学通信与信息工程学院,上海200072 [2]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《应用科学学报》2005年第6期577-581,共5页Journal of Applied Sciences

基　　金：国家自然科学基金(60372054);江苏省自然科学基金(BK2004067)资助项目

摘　　要：以IEEE 802.15.3 HR-WPAN协议框架为基础,首先建立了微网结构ad hoc网络的系统模型,给出了微网结构ad hoc网络容量区的定义.在此基础上,给出了微网结构ad hoc网络容量区的计算方法,并研究了不同发射功率、离散功控、传输速率离散化和多跳路由4个方面对容量区的影响.结果表明:增大发射功率与采用多跳路由能显著扩大网络的容量区;传输速率离散则不利于网络的容量区的扩大;而功率控制对微网结构ad hoc网络的容量区影响很小.这对以IEEE 802.15.3 HR-WPAN协议为基础的无线ad hoc网络的跨微网通信、路由协议、功率控制等方面的设计,具有重要的指导意义.Based on the IEEE 802.15.3 high-rate WPAN Standard, a system model for wireless piconet-based ad hoc network is proposed, and the capacity region is defined. An approach to computing the capacity region is described. Effects of transmission power, discrete power control, discrete transmission rate and muhihop routing on the capacity region are studied. The results show that both increase of transmission power and adoption of muhihop routing can significantly expand the capacity region. The discretized transmission rate significantly reduces the network capacity, while the multi-level power control has little impact on the capacity regions. These provide important theoretical guidelines for the design of cross-piconet communication, routing protocol and power control algorithm in wireless piconet-based ad hoc networks.

关 键 词：ad HOC网络 微网 多跳路由 媒体接入控制 网络容量 

分 类 号：TN929.5[电子电信—通信与信息系统]