Patent ID: 7746897
Filing Date: 2010-06-29
Classification: H04W

Abstract:
1. A computer-readable medium encoded with computer executable instructions for requesting over-the-air (OTA) bandwidth for an emergency call, the computer executable instructions when executed operable to cause a processor to: access one or more wireless, link layer network management frames transmitted by a first wireless access point to determine whether Quality of Service and expedited bandwidth services are supported; access an OTA bandwidth request corresponding to a Voice over Internet Protocol (VoIP) call, wherein the OTA bandwidth request is embodied in a wireless link layer network management frame; generate an information element (IE) comprising one or more emergency codes that each identify an emergency aspect of the call; attach the IE to the OTA bandwidth request for communication to the first wireless access point with the OTA bandwidth request, the IE facilitating preferential treatment of the OTA bandwidth request; access a reassociation request generated in response to a roaming event and intended for a second wireless access point; determine, in response to the reassociation request, whether the VoIP call is currently active; and if the VoIP call is currently active, attach the IE to the reassociation request prior to transmission to the second wireless access point.