基于串扰的无线传感器网络可用带宽估计算法  

Overhearing-Based Estimation Algorithm of Available Bandwidth in Wireless Sensor Networks

作　　者：陈晨[1] 高新波[2] 裴庆祺[1] 

机构地区：[1]西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西西安710071 [2]西安电子科技大学电子工程学院,陕西西安710071

出　　处：《华南理工大学学报（自然科学版）》2010年第1期54-58,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金重点项目(60832005);国家自然科学基金资助项目(60803151);NSFC-广东联合基金重点项目(U0835004);高等学校学科创新引智计划项目(B08038);国家"863"计划项目(2007AA01Z215)

摘　　要：可用带宽是无线传感器网络中路由选择、负载均衡、多sink布置、优先级传输等策略的重要参考.文中提出一种利用串扰来估计采用了S-MAC协议的无线传感器网络可用带宽的方法.传感器节点在使用串扰避免机制后,将收集到邻节点的RTS/CTS/DATA/ACK分组中的网络分配矢量以表的形式记录在自己的缓存中,经过计算得到节点的可用带宽.仿真结果表明,该方法能够较为准确地预测S-MAC中节点周围的负载情况和竞争程度.Available bandwidth plays an important role in routing selection, load balance, multi-sink deployment and priority transmission in wireless sensor networks. This paper focuses on the available bandwidth and proposes an overheating-based estimation scheme of available bandwidth in S-MAC protocol-based wireless sensor networks. When the overhearing mechanism is enabled in S-MAC, the network allocation vectors stored in the RTS/CTS/DATA/ ACK packets of neighbour nodes are recorded in the buffer in the form of a table, and the available bandwidth is thus calculated. Simulated results show that the proposed method can accurately estimate the network load and cornpetition level regarding the investigated S-MAC nodes

关 键 词：无线传感器网络 可用带宽 串扰 

分 类 号：TN915[电子电信—通信与信息系统]