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1 UMA 概述UMA(Unlicensed MobileAccess,未授权的移动接入)技术一般是指多模终端(如 Wi-Fi/GSM)在 Wi-Fi 接入点覆盖的区域里可以通过宽带 IP 网络连接到移动网络上,以较低的资费获得和数据业务。UMA 提供的接入方式与以前的移动网络类似,它只是提供了一种附加的接入方式。图1给出了 UMA 的概念。由图1中
1 UMA Overview UMA (Unlicensed Mobile Access) technology generally means that a multimode terminal (such as Wi-Fi / GSM) can connect to a mobile network through a broadband IP network in the area covered by the Wi-Fi access point On the lower tariffs and data services. UMA provides access similar to previous mobile networks, it only provides an additional access. Figure 1 shows the concept of UMA. From Figure 1