High-efficiency wireless local-area network devices and methods for acknowledgements during scheduled transmission opportunities
Embodiments of a system and method for acknowledging frames in a wireless network are generally described herein. In some embodiments, a wireless communication device may include a transmit/receive unit configured to receive data from a sender. In some embodiments, the transmit/receive unit may be configured to receive a schedule. The transmit/receive unit may be further configured to acknowledge (ACK) the data in a first scheduled transmission to the sender. The first scheduled transmission to the sender may be determined based on the schedule. In some embodiments, the acknowledgement may be an acknowledgement frame or a block acknowledgment frame. The scheduled transmission to the sender may be determined based on the schedule.
1. A high-efficiency (HE) device, the HE device comprising: memory; and, circuitry coupled to the memory, the circuitry configured to:
receive one or more packets in a transmit opportunity (TXOP) from an access point (AP), the one or more packets comprising a first schedule comprising one or more scheduled time periods for the one or more packets from the AP, and a second schedule for transmitting, an uplink (UL) MU physical-layer convergence procedure protocol data unit (MU PPDU) to the AP; and
transmit the UL MU PPDU, the UL MU PPDU comprising an acknowledgement of the one or more packets and UL data for the AP, wherein the UL MU PPDU is to be transmitted in accordance with the second schedule during a first UL time period of the TXOP.
2. The HE device of claim 1 , wherein the acknowledgement is one from the following group:
a block acknowledgement frame and acknowledgment frame.
3. The HE device of claim 1 , wherein the one or more packets from the AP comprises a management frame.
4. The HE device of claim 1 , wherein the circuitry is further to:
transmit one or more data packets to the AP.
5. The HE device of claim 4 , wherein the circuitry is further to:
transmit the one or more data packets to the AP in the TXOP after the transmission of the acknowledgement of the one or more packets from the AP.
6. The HE device of claim 4 , wherein the circuitry is further to:
receive an acknowledgement from the AP to the transmitted one or more data packets in a next TXOP.
7. The HE device of claim 1 , wherein the second schedule comprises a bandwidth for the HE device to transmit and an indication of a duration for how long the HE device can transmit.
8. The HE device of claim 1 , wherein the circuitry is further to:
wait a short interface space and then transmit the MU PPDU comprising the acknowledgement of the one or more packets in the TXOP.
9. The HE device of claim 1 , wherein the circuitry is further to:
receive an indication to use a new acknowledgement policy in at least one of a signal (SIG) field, in a media access control (MAC) field, in a beacon field, in a probe response, or in a MAC management frame; and
wherein the circuitry is further configured to:
transmit the UL MU PPDU comprising the acknowledgement of the one or more packets in the first scheduled UL MU PPDU, if the indication of the new acknowledgement policy is received, otherwise transmit the acknowledgement of the one or more packets according to a legacy protocol.
10. The HE device of claim 1 , wherein the one or more data packets are transmitted using one or more of the following group: orthogonal frequency division multiple access (OFDMA) and multi-user multiple-input multiple-output (MU-MIMO) and are transmitted in accordance with Institute of Electrical and Electronic Engineers (IEEE) 802.11ax.
11. The HE device of claim 1 , wherein the second schedule includes a duration for the acknowledgment of the one or more packets.
12. The HE device of claim 1 further comprising a transceiver coupled to the circuitry.
13. The HE device of claim 12 further comprising one or more antennas coupled to the transceiver.
14. A method for acknowledgement performed on an high efficiency (HE) device of a wireless local-area network (WLAN), the method comprising:
receiving one or more packets in a transmit opportunity (TXOP) from an access point (AP), the one or more packets comprising a first schedule comprising one or more scheduled time periods for the one or more packets from the AP, and a second schedule for transmitting an uplink (UL) MU physical-layer convergence procedure protocol data unit (MU PPDU); and
transmitting the UL MU PPDU, the UL MU PPDU comprising an acknowledgement of the one or more packets, wherein the UL MU PPDU is to be transmitted in accordance with the second schedule during a first UL time period of the TXOP.
15. The method of claim 14 , wherein the acknowledgement is one from the following group:
an acknowledgement frame and block acknowledgement frame.
16. The method of claim 15 , wherein the second schedule includes a duration for the acknowledgment of the one or more packets.
17. An access point (AP), the AP comprising: memory; and, circuitry coupled to the memory, the circuitry configured to:
transmit one or more packets simultaneously in a transmit opportunity (TXOP) to each of one or more high-efficiency (HE) devices in accordance with orthogonal frequency division multiple access (OFDMA), wherein the one or more packets indicate a first schedule for the one or more packets and a second schedule for each of the one or more HE devices to transmit simultaneously a multi-user physical-layer convergence procedure protocol data unit (MU PPDU); and
receive MU PPDUs from the one or more HE devices, wherein the MU PPDUs from the one or more HE devices are to be received simultaneously in accordance with the second schedule, and wherein each of the MU PPDUs comprises an acknowledgement of packets received by a corresponding HE device received in accordance with the first schedule.
18. The AP of claim 17 , further comprising:
a transceiver coupled to the circuitry; and
one or more antennas coupled to the transceiver.
19. The AP of claim 17 , wherein the acknowledgment is one from the following group:
acknowledgement frame and block acknowledgement frame.
20. The AP of claim 19 , wherein the second schedule includes a duration for each of the one or more HEW devices to transmit the acknowledgment of the one or more packets.
21. The AP of claim 17 , wherein the circuitry is further configured to:
receive a management frame from at least one of the one or more HE devices; and
transmit an acknowledgement of the management frame to each of the at least one of the one or more HEW devices in a next scheduled MU-PPDU.
22. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors to perform operations for an high-efficiency (HE) station, the instructions to configure the one or more processors to cause the HE station to:
receive one or more packets in a transmit opportunity (TXOP) from an access point (AP), the one or more packets comprising a first schedule comprising one or more scheduled time periods for the one or more packets from the AP, and a second schedule for transmitting an uplink (UL) MU physical-layer convergence procedure protocol data unit (MU PPDU); and
transmit the UL MU PPDU, the UL MU PPM comprising an acknowledgement of the one or more packets, wherein the UL MU PPDU is to be transmitted in accordance with the second schedule during a first UL scheduled time period of the TXOP.
23. The non-transitory computer-readable storage medium of claim 22 , wherein the acknowledgement is one from the following group:
an acknowledgment frame and block acknowledgment frame.