提出了一种基于选播的无线Mesh网络网关选取模型和相应的网关选取路由算法.该模型将所有网关节点抽象成一个选播组,将所有的网关节点组成一个网关树,实现对网关组成员的管理与维护.网关选取路由算法以时延为度量,通过有效的选播机制自适应地查找“最优”网关节点为客户节点服务,以提供响应最快的高质量的因特网接入服务.实验结果表明,该算法能在合理的时间内有效地解决多网关选取问题.%A gateway selection model based on anycast communication is presented; and an anycast -based gateway routing algorithm in wireless mesh network are designed. In this model; all the gateway nodes areabstracted as an anycast group and the member management and maintenance of gateway group are implemented by a gateway tree which is consisted of all gateway nodes. To provide the client node for the fastest response to Internet access; the gateway selection routing algorithm takes delay as a standard and adaptively select the best gateway node for its services through effective anycast mechanism. The experimental results show that this algorithm can effectively solve the gateway selection problem.
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