A packet communication process for a wireless system that includes a sender and a receiver, is provided. The packet communication process dispenses with the need to send multiple block acknowledgments, one per Traffic Identifier (TID), from the receiver to the sender. This involves aggregating multiple MPDUs having a plurality of different TIDs; for each TID, generating a BAR to request an acknowledgment for one or more MPDUs with that TID from the receiver; transmitting the aggregated MPDUs and the BARs from the sender to the receiver over a wireless channel; receiving the aggregated MPDUs and the BARs at the receiver; in response to the BARs, generating a single block acknowledgement that includes an acknowledgment for each MPDU with a different TID; and transmitting the single block acknowledgement to the sender.