这种网络里，移动节点不具备路由功能，只有移动交换机负责路由和交换。这种网络的典型例子为蜂窝无线系统和办公无线局域网，后者是无线Ad hoc网络。-In such a network, the mobile node does not have routing capabilities, and only move the switch is responsible for the routing and switching. Typical examples of such networks f

The SIM provides secure, identifiable and authenticated access to mobile networks Since its inception in the early 1990’s to the present day, the SIM card provides secure, identifiable and authenticated access to mobile networks. It is also the prima