Station (sta), access point (ap) and method for aggregation of data packets for uplink transmission

A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors to perform operations for communication by a station (STA), the operations to configure the one or more processors to:

• buffer medium access control (MAC) protocol data units (MPDUs) for an uplink communication to an access point (AP), wherein the MPDUs are mapped to a master group of traffic identifiers (TIDs) based on traffic types of the MPDUs;
• decode a trigger frame (TF) from the AP, wherein the TF includes a TID aggregation limit parameter;
• select a group of aggregate TIDs from the master group of TIDs for aggregation of the buffered MPDUs into an aggregate MPDU (A-MPDU),
• wherein a number of aggregate TIDs in the group is selected based on an immediate acknowledgement threshold, indicated by the TID aggregation limit parameter, for which the MPDUs of the aggregate TIDs that are included in the A-MPDU would be acknowledged, by the AP, as part of an immediate acknowledgement.

A method of communication by a station (STA), the method comprising:

• decoding a trigger frame (TF) from an access point (AP);
• selecting a group of aggregate traffic identifiers (TIDs) from a group of TIDs that are active at the STA, wherein medium access control (MAC) protocol data units (MPDUs) buffered at the STA are mapped to the active TIDs based on traffic types of the MPDUs;
• encoding, for transmission to the AP, an aggregated MPDU (A-MPDU) that includes MPDUs of the aggregate TIDs,
• wherein a number of aggregate TIDs selected is based on a TID aggregation limit parameter of the TF,
• wherein the active TIDs are mapped to a group of access classes (ACs) of a quality of service (QoS) prioritization, and
• wherein the selection of the aggregate TIDs is further based on a preferred AC parameter of the TF that is configurable to indicate a preferred AC of the group from which at least a portion of the aggregate TIDs are to be selected.

An apparatus for an access point (AP), the apparatus comprising:

• memory;
• and processing circuitry, configured to:
• encode a trigger frame (TF) for transmission to a station (STA);
• and
• decode an aggregated medium access control (MAC) protocol data unit (A-MPDU) from the STA that includes MAC protocol data units (MPDUs), wherein the MPDUs are mapped to a group of traffic identifiers (TIDs) based on traffic types of the MPDUs and the TIDs are mapped to a group of access classes (ACs) of a quality of service (QoS) prioritization;
• wherein the TF includes a TID aggregation limit parameter that indicates a threshold of TIDs for the MPDUs of the A-MPDU for which the MPDUs would be acknowledged in an immediate block acknowledgement (BA) message, and
• wherein the TF further includes a preferred AC parameter that is configurable to indicate a preferred AC for which MPDUs of TIDs mapped to ACs of QoS priority equal to or lower than the preferred AC are to be aggregated into the A-MPDU.