采用CDMA和事件触发的无线传感器网络路由协议  

Novel Routing Protocol Based on CDMA and Event-triggering in Wireless Sensor Networks

作　　者：凌强[1] 严金丰[1] 张伟华[1] 

机构地区：[1]中国科学技术大学自动化系,合肥230027

出　　处：《小型微型计算机系统》2012年第4期825-828,共4页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(60904012)资助;中央高校基本科研业务费专项基金项目资助;科技部支撑计划项目(2008BAH28B04)资助

摘　　要：无线传感器网络节点能量的有限性限制了其大规模应用.基于地理位置信息,特别是RSSI(接收信号强度)信息的网络路由协议,可以很好地节能,但是冲突比较严重,单位能耗的数据接收量较小.基于RSSI信息对网络节点进行了区域划分,引入了CDMA技术和事件触发机制,有效的减少了冲突,从而增加了网络的寿命和数据接收量.在NS2平台上,将新协议与LEACH协议和典型的RSSI路由协议进行了仿真对比,表明了其有效性.The limited energy of wireless sensor network nodes constrains its large-scale applications. The routing protocol with geographical information, especially with the information of RSSI （ Received Signal Strength Indication）, can save much energy, but may generate serious conflicts among nodes, which leads to a small amount of transmitted data per unit energy. This paper proposes a new routing protocol for wireless sensor networks by implementing the CDMA technology and event triggering mechanism to effi- ciently partition the network area. The new routing protocol can effectively reduce the energy consumption and the conflicts among the nodes so that the network＇s life and the total amount of received data can be greatly improved. We compared the new protocol with the well-known LEACH protocol and a RSSI protocol through simulations on the NS2 platform. It was shown that the new protocol significantly extends the network life, reduces the conflict of nodes effectively and increases the amount of data received by the base station. These results confirm the superiority of the new protocol.

关 键 词：无线传感器网络 路由协议 CDMA 事件触发 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]