无线网状网组网技术及实验研究

面对日益增长的高速无线因特网接入需求，传统的无线接入方式，如蜂窝网、无线局域网（WLAN）面临许多挑战，而无线网状网（WMN）作为因特网“最后一公里”接入方案，提供一种灵活而低成本的多跳通信，也将成为各种无线网络融合的主要技术。针对这一极具发展前途的网络结构，从WMN的两种典型应用出发，文章从网络配置、功率控制、移动性管理和接入控制以及路由协议设计等方面说明了WMN组网中的相关问题和技术，对WMN与移动自组织（Ad hoc）网路由协议的设计进行了对比，并给出了一种基于WLAN和第二层交换技术的WMN试验床实现方案。

Key Technology and Experimental Research in Wireless Mesh Networks

With the increasing popularity and rising demand for high-rate wireless Internet access, traditional wireless access networks such as the cellular network and Wireless Local Area Network (WLAN) are facing some challenges. The Wireless Mesh Network (WMN) is emerging as a flexible and low-cost alternative to provide multi-hop communications, supporting applications such as last-mile Internet delivery. WMN has also become a promising technique in the merging of wireless networks. Some key technologies about the network management in WMN, including network configuration, power control, mobility management, access control and routing protocol are analyzed; the routing protocol design in WMN and mobile Ad hoc network are compared. An example of WMN testbed based on WLAN and second-layer switching technology is given.