Patent ID: 8768322

Claim:
A system for a perimeter between a wireless local area network (WLAN) and a wireless wide area network (WWAN), wherein the WLAN provides a WLAN coverage area that includes an interior of a building and the WWAN provides a WWAN coverage area that includes an exterior of the building, said system comprising: an access point, located within the building, for providing mobile stations with connectivity to the WLAN within the WLAN coverage area; wherein the access point located within the building is configured to transmit a first directional signal toward the interior of the building, the first directional signal including first information using a wireless protocol, wherein the wireless protocol is Bluetooth or IEEE 802.11; wherein the access point located within the building is further configured to transmit a second directional signal toward the exterior of the building, the second directional signal including second information using the wireless protocol, the first and second information differentiating the first and second directional signals from each other; and wherein the access point is positioned within proximity to a door of the building such that a mobile station entering or exiting the building through the door can sequentially detect the first and second directional signals and responsively perform a handoff between the WLAN and the WWAN.