Patent ID: 8913558
Filing Date: 2014-12-16
Classification: H04W

Abstract:
1. A mobile communication system constructed in a hierarchic configuration, comprising: a plurality of base stations, each communicating with a plurality of mobile stations; a plurality of router/layer 3 (L3) switches, each accommodating some of the plurality of base stations; a gateway to couple the router/L3 switches via a network, wherein the router/L3 switches are arranged to include a first table to store local routing information, and the gateway is arranged to include a second table to store an internet protocol (IP) address of the base stations and an IP address of the arranged router/L3 switches associated with the base station IP address; when the gateway establishes a path between one of the base stations and the gateway in response to a connection request through the base station from one of the mobile stations, the gateway refers to the second table and judges whether the arranged router/L3 switch accommodates the base station, and in the case that the arranged router/L3 switch accommodates the base station, sends information that is needed to establish a path between the base station and the gateway to the arranged router/L3 switch; the arranged router/L3 switch is configured to: