Resource request and allocation for uplink multi-user communication

Patent metadata

Field	Value
Publication number	US-10314067-B2
Application number	US-201816059372-A
Country	US
Kind code	B2
Filing date	Aug 9, 2018
Priority date	May 22, 2015
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

In wireless communications for multi-users, an access point may generate a trigger frame, which may include a trigger indication. The trigger indication may indicate whether a second trigger frame will be transmitted during a time interval. The trigger indication may use a single bit. The trigger frame may also include resource allocation for one or more stations. When the access point transmits the trigger frame, the station(s) may transmit an uplink frame(s) in response to the trigger frame. The access point may transmit a second trigger frame in the time interval. In response to the second trigger frame, the station(s) may transmit additional uplink frame(s) to the access point. The station(s) may save the resource allocation included in the trigger frame and utilize the same resource allocation for the uplink frame(s) and the additional uplink frame(s). Other methods, apparatus, and computer-readable media are also disclosed.

First claim

What is claimed is:

1. A station for facilitating communication in a wireless network for multi-user transmission, the station comprising:
one or more memories; and
one or more processors coupled to the one or more memories, the one or more processors configured to cause:
processing a first trigger frame received from an access point; and
processing a second trigger frame received from an access point during a time interval, wherein the second trigger frame does not repeat a resource allocation included in the first trigger frame and requests one or more stations to utilize the resource allocation for an uplink multi-user transmission.

2. The station of claim 1 , wherein the first trigger frame includes resource allocation information for scheduling the uplink multi-user transmission.

3. The station of claim 2 , wherein the resource allocation information includes resource allocation assignment to the station for the uplink multi-user transmission.

4. The station of claim 2 , wherein the one or more processors are configured to cause:
transmitting a first uplink frame to the access point in response to the first trigger frame and based on the resource allocation information.

5. The station of claim 4 , wherein the one or more processors are configured to cause:
determining that the first trigger frame comprises a trigger indication regarding a
sequence of trigger frames, wherein the trigger indication indicates that the second trigger frame will be transmitted during the time interval.

6. The station of claim 5 , wherein the one or more processors are configured to cause:
monitoring the wireless network for the second trigger frame in response to determining that the trigger indication indicates that the second trigger frame will be transmitted during the time interval; and
transmitting a second uplink frame based on the second trigger frame.

7. The station of claim 6 , wherein the second uplink frame and the first uplink frame are transmitted using a same set of sub-bands as indicated in the resource allocation information of the first trigger frame.

8. A computer-implemented method of facilitating multi-user communication in a wireless network, the method comprising:
processing a first trigger frame received from an access point;
transmitting a first uplink frame to the access point in response to the first trigger frame; and
processing a second trigger frame received from an access point during a time interval, wherein the second trigger frame does not repeat a resource allocation included in the first trigger frame and requests one or more stations to utilize the resource allocation for an uplink multi-user transmission.

9. The computer-implemented method of claim 8 , wherein the first trigger frame includes resource allocation information for scheduling the uplink multi-user transmission.

10. The computer-implemented method of claim 9 , further comprising:
transmitting a first uplink frame to the access point in response to the first trigger frame and based on the resource allocation information.

11. The computer-implemented method of claim 10 , further comprising:
determining that the first trigger frame comprises a trigger indication regarding a sequence of trigger frames, wherein the trigger indication indicates that the second trigger frame will be transmitted during the time interval.

12. The computer-implemented method of claim 11 , further comprising:
monitoring the wireless network for the second trigger frame in response to determining that the trigger indication indicates that the second trigger frame will be transmitted during the time interval; and
transmitting a second uplink frame based on the second trigger frame.

13. The computer-implemented method of claim 12 , wherein the second uplink frame and the first uplink frame are transmitted using a same set of sub-bands as indicated in the resource allocation information of the first trigger frame.

14. An access point for facilitating communication in a wireless network for multi- user transmission, the access point comprising:
one or more memories; and
one or more processors coupled to the one or more memories, the one or more processors configured to cause:
transmitting a first trigger frame to one or more stations; and
transmitting a second trigger frame to the one or more stations during a time interval, wherein the second trigger frame does not repeat a resource allocation included in the first trigger frame and requests the one or more stations to utilize the resource allocation for an uplink multi-user transmission with at least one of the one or more stations.

15. The access point of claim 14 , wherein the one or more processors are configured to cause:
generating the first trigger frame, wherein the first trigger frame includes a trigger indication, wherein the trigger indication indicates that the second trigger frame will be transmitted during the time interval.

16. The access point of claim 15 , wherein the one or more processors are configured to cause:
generating the second trigger frame in response to setting the trigger indication in the first trigger frame to indicate that the second trigger frame will be transmitted during the time interval.

17. The access point of claim 15 , wherein the second trigger frame includes resource allocation assignment to the one or more stations and the second trigger frame schedules an uplink multi-user transmission with at least the one or more stations when the resource allocation included in the first trigger frame is no longer to be used.

18. The access point of claim 15 , wherein the trigger indication indicates an association between the first trigger frame and the second trigger frame.

19. The access point of claim 14 , wherein the one or more processors are configured to cause:
processing a first uplink frame from a first station of the one or more stations and a second uplink frame from the first station, and wherein the first uplink frame and the second uplink frame are associated with a same set of sub-bands as indicated in the resource allocation in the first trigger frame.

20. The access point of claim 14 , wherein the one or more processors are configured to cause:
processing a first uplink frame from a first station of the one or more stations; and processing a second uplink frame from the first station of the one or more stations,
wherein the first uplink frame is received following transmission of the first trigger frame and before transmission of the second trigger frame and the second uplink frame is received following transmission of the second trigger frame,
wherein:
the first trigger frame comprises a length of the first uplink frame,
the second trigger frame comprises a length of the second uplink frame, and
the length of the first uplink frame is less than the length of the second uplink frame.

Assignees

• Newracom Inc

Inventors

• Ferdowsi Vida
• Kwon Young Hoon

Classifications

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W72/1268 Primary

  of uplink data flows · CPC title