无线传感器网络中数据链路层和网络层设计

作为无线通信网络的一个新的研究热点,无线传感器网络正以其独有的特点和全新的应用而得到人们的广泛关注.本文简要介绍无线传感器网络的体系结构、节点构成和协议层次.分类阐述了几种典型的数据链路层和网络层的设计方案和设计思想.数据链路层中MAC协议可分为两大类:基于竞争的MAC协议和基于预约的MAC协议;网络层的路由算法也分为两大类:平面路由协议和分级路由协议.最后提出一些研究构想.

Data Link Layer and Network Layer Design for Wireless Sensor Networks

Wireless sensor networks, a new hotspot of wireless communications networks, has been paid great attention for its unique characteristics and novel applications. This paper firstly outlines the system architecture, node structure and protocol layers of wireless sensor networks. Then the data link layer and network layer design schemes of several typical systems are described in detail. The MAC protocols can be divided into scheduling based and contention based schemes, while the routing algorithms can be classified into plane and cluster protocols. Finally, some research concepts are proposed.