Patent ID: 7016353
Filing Date: 2006-03-21
Classification: H04L,H04W

Abstract:
1. A system for dynamically assigning IP addresses to mobile stations in wireless networks including a plurality of base stations and operating according to a Dynamic Host Configuration Protocol (DHCP) said system comprising: a wired IP network connecting the base stations; an address server connected to the wired IP network; and a proxy server at each base station in the wired network, said proxy server intercepting client-to-server requests for an IP address and modifying the request so that it goes only to the address server, and not to other base stations, and intercepting server-to-client IP address messages from the address server and making sure that they are unicast only to the mobile stations requesting IP addresses and wherein the proxy server changes a hops field in a received DHCP client-to-server message so that the address server processes the message, but the proxy servers at other base stations discard the message.