A gateway server manages connections in a wireless local area network (WLAN). The gateway server provides context information, such as an IP address, that is stored after being previously allocated to a mobile device in a previous connection to the WLAN. The gateway server reassigns the IP address to...http://www.google.de/patents/US7260638?utm_source=gb-gplus-sharePatent US7260638 - Method and system for enabling seamless roaming in a wireless network
