Methods for supporting emergency calls on a wireless local...

Details Methods for supporting emergency calls on a wireless local... Methods for supporting emergency calls on a wireless local...

H - Electricity

04

W

H04W 4/22 (2009.01) H04W 88/08 (2009.01)

Patent

CA 2644492

Several methods are provided for communicating emergency call capability information between a station and an access point (AP) in a wireless local area network. The methods include advertising by the AP of its emergency call capabilities and announcing by the station of its emergency call capabilities. The AP can advertise its emergency call capabilities in a beacon frame, a probe response frame, a reassociation response frame, or a reauthentication response frame. The station can announce its emergency call capabilities in an association request frame, a reassociation request frame, an authentication request frame, or a reauthentication request frame.

La présente invention concerne plusieurs procédés permettant de communiquer des informations de capacités de prise en charge d'appels d'urgence entre une station et un point d'accès (AP) dans un réseau local sans fil. D'après les procédés selon l'invention, l'AP annonce ses capacités de prise en charge d'appels d'urgence, et la station annonce également ses capacités de prise en charge d'appels d'urgence. L'AP peut annoncer ses capacités de prise en charge d'appels d'urgence dans une trame balise, une trame de réponse d'enquête, une trame de réponse de réassociation, ou une trame de réponse de réauthentification. La station peut annoncer ses capacités de prise en charge d'appels d'urgence dans une trame de demande d'association, une trame de demande de réassociation, une trame de demande d'authentification ou une trame de demande de réauthentification.

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