Patent ID: 7894429
Filing Date: 2011-02-22
Classification: H04W

Abstract:
1. A method of terminating a multicast service in a wireless communication system, the method comprising: receiving, by an access point, a request frame from a requesting station including a first delivery interval field indicating a delivery interval which is a period for transmission of a multicast stream in units of Delivery Traffic Indication Maps (DTIMs); transmitting, by the access point, a first response frame to the requesting station to establish a multicast service, the first response frame including a first identification (ID) field and a first element status field, the first ID field indicating a unique identifier for the multicast stream within a Basic Service Set (BSS), the first element status field indicating an acceptance of the delivery interval for the multicast stream in the request frame; and transmitting, by the access point, a second response frame to the requesting station to terminate the multicast service for the multicast stream, the second response frame including a second delivery interval field having a value set to zero and a second element status field having a value set to “terminate”.