Station (STA), access point (AP) and method for aggregation of data packets for uplink transmission

1. An apparatus of a high-efficiency (HE) station (STA), the STA configured for transmission of a multi- traffic identifier (TID) Aggregate Medium Access Control (MAC) Protocol Data Unit (A-MPDU) (multi-TID A-MPDU), the apparatus comprising: processing circuitry; and memory, the processing circuitry configured to:

decode a trigger frame (TF) received from an access point (AP), the trigger frame comprising:

a medium access control (MAC) protocol data unit (MPDU) multi-user (MU) (MPDU MU) spacing factor subfield;

a traffic identifier (TID) aggregation limit subfield; and

a preferred access class (AC) subfield,

aggregate MPDUs into an aggregate MPDU (A-MPDU), wherein the MPDUs are selected for aggregation into the A-MPDU based on the TID aggregation limit subfield and the preferred AC subfield; and

encode a high-efficiency (HE) trigger-based (TB) physical layer (PHY) protocol data unit (PPDU) (HE TB PPDU) for transmission to the AP in response to the trigger frame, the HE TB PPDU comprising the A-MPDU,

wherein the TID aggregation limit subfield indicates a maximum number of TIDs to be aggregated by the STA in the A-MPDU, and

wherein the preferred AC subfield indicates a lowest AC that is recommended for aggregation of MPDUs in the A-MPDU.

2. The apparatus of claim 1 wherein the trigger frame is a basic trigger variant of the trigger frame.

3. The apparatus of claim 1 wherein each MPDU is associated with a TID and an AC, and wherein the A-MPDU is a multi-TID A-MPDU when MPDUs associated with more than one TID are aggregated in the A-MPDU.

4. The apparatus of claim 3 , wherein the MPDUs that are selected for aggregation are associated with an AC having a priority at least as great as the lowest AC indicated by the preferred AC subfield.

5. The apparatus of claim 4 wherein the processing circuitry is configured to aggregate MPDUs with ACs of more than one priority and more than one TID into a multi-TID A-MPDU, in accordance with the TID aggregation limit subfield and the preferred AC subfield, for transmission within the HE TB PPDU.

6. The apparatus of claim 4 wherein the lowest AC indicated by the preferred AC subfield comprises one of a plurality of access classes, the plurality of access classes comprising a voice AC of a highest priority, a video AC of a second highest priority, a best effort AC of a third highest priority, and a background AC of a lowest priority.

7. The apparatus of claim 1 wherein the processing circuitry is configured to aggregate quality-of-service (QoS) data frames with multiple TIDs in a multi-TID A-MPDU.

8. The apparatus of claim 1 , wherein the trigger frame includes a Trigger Type field indicating that the trigger frame is a basic trigger variant that includes a common information field, wherein the common information field comprises the MPDU MU spacing factor subfield, the TID aggregation limit subfield and the preferred AC subfield.

9. The apparatus of claim 1 wherein the processing circuitry is part of a MAC layer to provide the MPDUs.

10. The apparatus of claim 9 wherein the processing circuity further comprises a baseband processor, and

wherein the memory is configured to store information from the trigger frame.

11. The apparatus of claim 1 , wherein the processing circuitry comprises a field-programmable gate array (FPGA).

12. The apparatus of claim 1 , wherein the processing circuitry comprises one or more application specific integrated circuits (ASICs).

13. The apparatus of claim 1 , further comprising transceiver circuitry coupled to the processing circuitry, the transceiver circuitry coupled to two or more patch antennas for receiving signalling in accordance with a multiple-input multiple-output (MIMO) technique.

14. The apparatus of claim 1 , further comprising transceiver circuitry coupled to the processing circuitry, the transceiver circuitry coupled to two or more microstrip antennas for receiving signalling in accordance with a multiple-input multiple-output (MIMO) technique.

15. A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of a high-efficiency (HE) station (STA) to configure the STA for transmission of a multi-traffic identifier (TID) Aggregate Medium Access Control (MAC) Protocol Data Unit (A-MPDU) (multi-TID A-MPDU),

the processing circuitry configured to:

decode a trigger frame (TF) received from an access point (AP), the trigger frame comprising:

a medium access control (MAC) protocol data unit (MPDU) multi-user (MU) (MPDU MU) spacing factor subfield;

a traffic identifier (TID) aggregation limit subfield; and

a preferred access class (AC) subfield,

aggregate MPDUs into an aggregate MPDU (A-MPDU), wherein the MPDUs are selected for aggregation into the A-MPDU based on the TID aggregation limit subfield and the preferred AC subfield; and

encode a high-efficiency (HE) trigger-based (TB) physical layer (PHY) protocol data unit (PPDU) (HE TB PPDU) for transmission to the AP in response to the trigger frame, the HE TB PPDU comprising the A-MPDU,

wherein the TID aggregation limit subfield indicates a maximum number of TIDs to be aggregated by the STA in the A-MPDU, and

wherein the preferred AC subfield indicates a lowest AC that is recommended for aggregation of MPDUs in the A-MPDU.

16. The computer-readable storage medium of claim 15 wherein the trigger frame is a basic trigger variant of the trigger frame, and

wherein each MPDU is associated with a TID and an AC, and

wherein the A-MPDU is a multi-TID A-MPDU when MPDUs associated with more than one TID are aggregated in the A-MPDU.

17. The apparatus of claim 16 , wherein the MPDUs that are selected for aggregation are associated with an AC having a priority at least as great as the lowest AC indicated by the preferred AC subfield, and

wherein the processing circuitry is configured to aggregate MPDUs with ACs of more than one priority and more than one TID into a multi-TID A-MPDU, in accordance with the TID aggregation limit subfield and the preferred AC subfield, for transmission within the HE TB PPDU.

18. An apparatus of a high-efficiency (HE) access point (AP), the AP configured for reception of a multi- traffic identifier (TID) Aggregate Medium Access Control (MAC) Protocol Data Unit (A-MPDU) (multi-TID A-MPDU), the apparatus comprising: processing circuitry; and memory, the processing circuitry configured to:

encode a trigger frame (TF) for transmission to an HE station (STA), the trigger frame comprising:

a medium access control (MAC) protocol data unit (MPDU) multi-user (MU) (MPDU MU) spacing factor subfield;

a traffic identifier (TID) aggregation limit subfield; and

a preferred access class (AC) subfield,

decode a high-efficiency (HE) trigger-based (TB) physical layer (PHY) protocol data unit (PPDU) (HE TB PPDU) received from the STA in response to the trigger frame, the HE TB PPDU comprising aggregate MPDU (A-MPDU),

wherein the A-MPDU comprises MPDUs that are selected for aggregation into the A-MPDU based on the TID aggregation limit subfield and the preferred AC subfield,

wherein the TID aggregation limit subfield. indicates a maximum number of TIDs to be aggregated by the STA in the A-MPDU, and

wherein the preferred AC subfield indicates a lowest AC that is recommended for aggregation of MPDUs in the A-MPDU.

19. The apparatus of claim 18 wherein the trigger frame is a basic trigger variant of the trigger frame.

20. The apparatus of claim 18 wherein each MPDU is associated with a TID and an AC, and

wherein the A-MPDU is a multi-TID A-MPDU when MPDUs associated with more than one TID are aggregated in the A-MPDU.