关键词: 网络发现, 无线网络, 加权均值, 接入路由器

Abstract: To realize seamless mobility in isomerous wireless networks, selecting the target network in proper time plays a crucial role. An Improved Access Router Discovery（IARD） method is proposed. This is a network discovery and selection method using in a isomerous environment comprising of WLAN and UMTS networks. In this method, the nomination of potential networks is obtained in core network using a special weighted mean algorithm. All criteria are changed according to different traffic types, and the target network is confirmed. This method has been tested by means of simulation under various conditions with different traffic types. Experimental results show that more appropriate network is selected than other methods.

Key words: network discovery, wireless network, weighted mean, access router