Patent ID: 7898996
Filing Date: 2011-03-01
Classification: H04W

Abstract:
1. A method of terminating a multicast service in a wireless communication system, the method comprising: transmitting, by a station to an access point, a first request frame including a TCLAS element to define a multicast stream and a first delivery interval field to indicate a delivery interval which is a periodicity for transmission of the multicast stream in units of Delivery Traffic Indication Maps (DTIMs); receiving, by the station from the access point, a response frame to establish the multicast service, the response frame indicating an acceptance of the delivery interval for the multicast stream; and transmitting, by the station to the access point, a second request frame to terminate the multicast service, the second request frame including a second TCLAS element to identify the multicast stream and a second delivery interval field set to zero indicating that the station does not use the multicast stream.