A multicast method for a wireless network comprising: notifying an access point of a multicast request; and scheduling a downlink time for the transmission of multicast data, wherein the notifying comprises modifying a traffic specification, TSPEC, frame of IEEE 802.11n-compliant traffic to indicate a multicast function and redefining the TSPEC frame included in the multicast request to contain a multicast address (21, 23); and multicasting the data from the access point during the downlink time to multicast addressees; the method characterized by further comprising: changing a power save multi-poll, PSMP, sequence frame of the IEEE 802.11n-compliant traffic to ensure that a station receiving the multicast data is awake to receive the multicast data and that the station transmits an acknowledgement in its scheduled uplink time, wherein the power save multi-poll, PSMP, sequence frame (40 is changed to include downlink transmission times for multicast transmission and uplink transmission times for acknowledgements; wherein the modifying and redefining the TSPEC frame comprise: setting a flag by changing to state of a reserved bit to signal multicast flow; assigning a shortened version of the multicast address (21, 23); and using the shortened version of the multicast address (21, 23) in the TSPEC frame as any one of: a field in the TSPEC frame; an address appended to the frame; an unused association ID, AID; and wherein the PSMP frame is modified to contain the multicast address (21, 23) received via the TSPEC frame. notifying an access point of a multicast request; and scheduling a downlink time for the transmission of multicast data, wherein the notifying comprises modifying a traffic specification, TSPEC, frame of IEEE 802.11n-compliant traffic to indicate a multicast function and redefining the TSPEC frame included in the multicast request to contain a multicast address (21, 23); and multicasting the data from the access point during the downlink time to multicast addressees; changing a power save multi-poll, PSMP, sequence frame of the IEEE 802.11n-compliant traffic to ensure that a station receiving the multicast data is awake to receive the multicast data and that the station transmits an acknowledgement in its scheduled uplink time, wherein the power save multi-poll, PSMP, sequence frame (40 is changed to include downlink transmission times for multicast transmission and uplink transmission times for acknowledgements; wherein the modifying and redefining the TSPEC frame comprise: setting a flag by changing to state of a reserved bit to signal multicast flow; assigning a shortened version of the multicast address (21, 23); and using the shortened version of the multicast address (21, 23) in the TSPEC frame as any one of: a field in the TSPEC frame; an address appended to the frame; an unused association ID, AID; and setting a flag by changing to state of a reserved bit to signal multicast flow; assigning a shortened version of the multicast address (21, 23); and using the shortened version of the multicast address (21, 23) in the TSPEC frame as any one of: a field in the TSPEC frame; an address appended to the frame; an unused association ID, AID; and a field in the TSPEC frame; an address appended to the frame; an unused association ID, AID; and wherein the PSMP frame is modified to contain the multicast address (21, 23) received via the TSPEC frame.