Method for performing uplink transmission in wireless LAN system and terminal using same
A method for performing uplink transmission in a wireless LAN system according to an embodiment of the present specification may comprise the steps of: receiving, by an AP, a buffer state report frame from a reception STA coupled to the AP, wherein the buffer state report frame is a frame in which a first frame and a second frame are aggregated, the first frame including a first traffic identifier indicating a transmission priority of a first traffic buffered in the reception STA and first queue size information indicating the amount of the buffered first traffic, and the second frame including a second traffic identifier indicating a transmission priority of a second traffic buffered in the reception STA and second queue size information indicating the amount of the buffered second traffic; and transmitting, by the AP, a trigger frame for a plurality of user STAs participating in UL MU transmission on the basis of a buffer state report frame.
1. A method used in a wireless local area network (WLAN) system, the method comprising:
receiving, by an access point (AP), a buffer state report (BSR) frame from a receiving station (STA) associated with the AP,
wherein the BSR frame is configured based on a frame in which a first frame and a second frame are aggregated by the receiving STA,
wherein the first frame includes a first traffic identifier (TID) related to a transmission priority level of first traffic buffered in the receiving STA and first queue size information related to an amount of the first traffic,
wherein the second frame includes a second TID related to a transmission priority level of second traffic buffered in the receiving STA and second queue size information related to an amount of the second traffic,
wherein the first frame is either a Quality of Service (QoS) data frame comprising a payload or a QoS null frame not comprising the payload, and
wherein the second frame is either the QoS data frame or the QoS null frame; and
transmitting, by the AP, a trigger frame for a plurality of user STAs participating in uplink multi-user (UL MU) transmission based on the received (BSR) frame.
2. The method of claim 1 , wherein the receiving STA comprises a first transmission queue corresponding to a first access category (AC) having a highest priority level, a second transmission queue corresponding to a second AC having a lowest priority level, a third transmission queue corresponding to a third AC having a lower priority level than that of the first AC, and a fourth transmission queue corresponding to a fourth AC having a lower priority level than that of the third AC.
3. The method of claim 1 , wherein the first traffic and the second traffic are included in a same transmission queue.
4. The method of claim 1 , wherein the BSR frame is transmitted in an unsolicited manner.
5. The method of claim 1 , wherein the first TID and the second TID indicate different transmission priority levels.
6. A wireless device in a wireless local area network (WLAN) system, the wireless device comprising:
a transceiver to transmit and receive a radio signal; and
a processor connected to the transceiver,
wherein the processor is configured to:
receive a buffer state report (BSR) frame from a receiving station (STA) associated with the wireless device,
wherein the BSR frame is configured based on a frame in which a first frame and a second frame are aggregated by the receiving STA,
wherein the first frame includes a first traffic identifier (TID) related to a transmission priority level of first traffic buffered in the receiving STA and first queue size information related to an amount of the first traffic,
wherein the second frame includes a second TID related to a transmission priority level of second traffic buffered in the receiving STA and second queue size information related to an amount of the second traffic,
wherein the first frame is either a Quality of Service (QoS) data frame comprising a payload or a QoS null frame not comprising the payload, and
wherein the second frame is either the QoS data frame or the QoS null frame; and
transmit a trigger frame for a plurality of user STAs participating in uplink multi-user (UL MU) transmission based on the received BSR frame.
7. The wireless device of claim 6 , wherein the receiving STA comprises a first transmission queue corresponding to a first access category (AC) having a highest priority level, a second transmission queue corresponding to a second AC having a lowest priority level, a third transmission queue corresponding to a third AC having a lower priority level than that of the first AC, and a fourth transmission queue corresponding to a fourth AC having a lower priority level than that of the third AC.
8. The wireless device of claim 6 , wherein the first traffic and the second traffic are included in a same transmission queue.
9. The wireless device of claim 6 , wherein the BSR frame is transmitted in an unsolicited manner.
10. The wireless device of claim 6 , wherein the first TID and the second TID indicate different transmission priority levels.
11. A method used in a wireless local area network (WLAN) system, the method performed by a receiving station (STA) and comprising:
configuring a buffer state report (BSR) frame by aggregating a first frame and a second frame,
wherein the first frame includes a first traffic identifier (TID) related to a transmission priority level of first traffic buffered in the receiving STA and first queue size information related to an amount of the first traffic,
wherein the second frame includes a second TID related to a transmission priority level of second traffic buffered in the receiving STA and second queue size information related to an amount of the second traffic,
wherein the first frame is either a Quality of Service (QoS) data frame comprising a payload or a QoS null frame not comprising the payload, and
wherein the second frame is either the QoS data frame or the QoS null frame;
transmitting the BSR frame to an access point (AP); and
receiving a trigger frame for uplink multi-user (UL MU) transmission from the AP, wherein the trigger frame is configured by the AP based on the BSR frame.
12. The method of claim 11 , wherein the receiving STA comprises a first transmission queue corresponding to a first access category (AC) having a highest priority level, a second transmission queue corresponding to a second AC having a lowest priority level, a third transmission queue corresponding to a third AC having a lower priority level than that of the first AC, and a fourth transmission queue corresponding to a fourth AC having a lower priority level than that of the third AC.
13. The method of claim 11 , wherein the first traffic and the second traffic are included in a same transmission queue.
14. The method of claim 11 , wherein the BSR frame is transmitted in an unsolicited manner.
15. The method of claim 11 , wherein the first TID and the second TID indicate different transmission priority levels.
16. A receiving station (STA) in a wireless local area network (WLAN) system, the wireless device comprising:
a transceiver to transmit and receive a radio signal; and
a processor connected to the transceiver,
wherein the processor is configured to:
configure a buffer state report (BSR) frame by aggregating a first frame and a second frame,
wherein the first frame includes a first traffic identifier (TID) related to a transmission priority level of first traffic buffered in the receiving STA and first queue size information related to an amount of the first traffic,
wherein the second frame includes a second TID related to a transmission priority level of second traffic buffered in the receiving STA and second queue size information related to an amount of the second traffic,
wherein the first frame is either a Quality of Service (QoS) data frame comprising a payload or a QoS null frame not comprising the payload, and
wherein the second frame is either the QoS data frame or the QoS null frame;
transmit the BSR frame to an access point (AP); and
receive, via the transceiver, a trigger frame for uplink multi-user (UL MU) transmission from the AP, wherein the trigger frame is configured by the AP based on the BSR frame.
17. The receiving STA of claim 16 , wherein the receiving STA comprises a first transmission queue corresponding to a first access category (AC) having a highest priority level, a second transmission queue corresponding to a second AC having a lowest priority level, a third transmission queue corresponding to a third AC having a lower priority level than that of the first AC, and a fourth transmission queue corresponding to a fourth AC having a lower priority level than that of the third AC.
18. The receiving STA of claim 16 , wherein the first traffic and the second traffic are included in a same transmission queue.
19. The receiving STA of claim 16 , wherein the BSR frame is transmitted in an unsolicited manner.
20. The receiving STA of claim 16 , wherein the first TID and the second TID indicate different transmission priority levels.