Methods for delivery of multicast packets in a wireless communication
system are disclosed. The methods comprise transmitting a contention free
period initiation signal from an access point to the station,
transmitting broadcast packets from the access point to the station,
transmitting multicast packets from the access point to the station and
holding the multicast packets in storage after the transmission,
transmitting a contention free period end signal from the access point to
the station, determining if a negative acknowledgement message has been
received, retransmitting the multicast packets in response to receiving a
negative acknowledgment message, and eliminating the multicast packets at
a next beacon interval.