Interconnection and integration of a WWAN and a WLAN to provide continuous packet data services to mobile users where each mobile access terminal is configured to support both air links with the WWAN and WLAN. The WWAN may be a CDMA2000 system and the WLAN may be an IEEE 802.11 system....http://www.google.de/patents/US7254119?utm_source=gb-gplus-sharePatent US7254119 - Interworking mechanism between CDMA2000 and WLAN
