Embodiments describe methods, systems, and devices that utilize positional information to determine location of other device and/or to provide a location-based message. A method can include receiving a location information of a mobile device and using an access point to transmit location information...http://www.google.com.tw/patents/US8126477?utm_source=gb-gplus-share專利 US8126477 - Methods and devices for interworking of wireless wide area networks and wireless local area networks or wireless personal area networks
