Multiple network allocation vector operation

• US 10,021,694 B2
• Filed: 09/21/2017
• Issued: 07/10/2018
• Est. Priority Date: 12/28/2015
• Status: Active Grant

• Current Assignee: Atlas Global Technologies LLC (Acacia Research Corporation)
• Original Assignee: Newracom Inc.
• Inventors: Noh, Yujin, Seok, Yong Ho, Lee, Dae Won
• Primary Examiner(s): Shivers, Ashley
• Application Number:
  US15/711,872
• Publication Number:
  US 20180014293A1
• Time in Patent Office: 292 Days
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 52/42 in systems with time, space, frequency or polarisation diversity
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/046 the resource being in the space domain, e.g. beams
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A first wireless device may determine a bandwidth for transmitting a frame, calculate two or more Spatial Reuse (SR) parameter values for the bandwidth, set, using the SR parameter values, first and second SR fields of the frame based on the bandwidth and a channel center frequency in which the bandwidth is carried, and transmit the frame to a second wireless device on the bandwidth. The first and second SR fields may be set to a first value when the bandwidth is a 40 MHz bandwidth and the channel center frequency is in a 2.4 GHz band. The first and second SR fields may be set to the first value when the bandwidth is an 80+80 MHz bandwidth and the channel center frequency is in a 5 GHz band. The first value may be a minimum of SR parameter values for first and second bandwidths in the bandwidth.

Claims

1. A method implemented by a station in a wireless communication system, the method comprising:

receiving a trigger frame soliciting an uplink frame from an access point;

generating the uplink frame comprising spatial reuse information and bandwidth information of the uplink frame, wherein the spatial reuse information comprises four Spatial Reuse (SR) values, and wherein a bandwidth of the uplink frame spans one or more 20 MHz channels; and

transmitting the uplink frame solicited by the trigger frame to the access point,

wherein each of the four SR values is determined based on the bandwidth of the uplink frame and a frequency band in which the station operates.

2. The method of claim 1, wherein all of the four SR values have a same value when the bandwidth is 20 MHz.

3. The method of claim 1, wherein when the bandwidth is 40 MHz, a first SR value and a third SR value apply to a first 20 MHz channel of the bandwidth, and a second SR value and a fourth SR value apply to a second 20 MHz channel of the bandwidth.

4. The method of claim 3, wherein the first SR value is the same as the third SR value, and the second SR value is the same as the fourth SR value.

5. The method of claim 4, wherein the first SR value is the same as the second SR value when the station operates in a 2.4 GHz band.

6. The method of claim 1, wherein when the bandwidth is 80 MHz, a first SR value applies to a first 20 MHz channel of the bandwidth, a second SR value applies to a second 20 MHz channel of the bandwidth, a third SR value applies to a third 20 MHz channel of the bandwidth, and a fourth SR value applies to a fourth 20 MHz channel of the bandwidth.

7. The method of claim 1, wherein when the bandwidth is 160 MHz or 80+80 MHz, a first SR value applies to a first 40 MHz channel of the bandwidth, a second SR value applies to a second 40 MHz channel of the bandwidth, a third SR value applies to a third 40 MHz channel of the bandwidth, and a fourth SR value applies to a fourth 40 MHz channel of the bandwidth.

8. The method of claim 7, wherein the first SR value is the same as the third SR value when the bandwidth is 80+80 MHz.

9. The method of claim 8, wherein the second SR value is the same as the fourth SR value when the bandwidth is 80+80 MHz.

10. The method of claim 1, wherein each of the four SR values has a predetermined value indicating information of transmit power for a spatial reuse transmission.

11. The method of claim 1, wherein the four SR values are included in the trigger frame transmitted from the access point.

12. A station in a wireless communication system, the station comprising:

a receiver configured to receive a trigger frame soliciting an uplink frame from an access point;

a processor configured to generate the uplink frame comprising spatial reuse information and bandwidth information of the uplink frame, wherein the spatial reuse information comprises four Spatial Reuse (SR) values, wherein a bandwidth of the uplink frame spans one or more 20 MHz channels, and wherein each of the four SR values is determined based on the bandwidth of the uplink frame and a frequency band in which the station operates; and

a transmitter configured to transmit the uplink frame solicited by the trigger frame to the access point.

13. The station of claim 12, wherein all of the four SR values have a same value when the bandwidth is 20 MHz.

14. The station of claim 12, wherein when the bandwidth is 40 MHz, a first SR value and a third SR value apply to a first 20 MHz channel of the bandwidth, and a second SR value and a fourth SR value apply to a second 20 MHz channel of the bandwidth.

15. The station of claim 14, wherein the first SR value is the same as the third SR value, and the second SR value is the same as the fourth SR value.

16. The station of claim 15, wherein the first SR value is the same as the second SR value when the station operates in a 2.4 GHz band.

17. The station of claim 12, wherein when the bandwidth is 80 MHz, a first SR value applies to a first 20 MHz channel of the bandwidth, a second SR value applies to a second 20 MHz channel of the bandwidth, a third SR value applies to a third 20 MHz channel of the bandwidth, and a fourth SR value applies to a fourth 20 MHz channel of the bandwidth.

18. The station of claim 12, wherein when the bandwidth is 160 MHz or 80+80 MHz, a first SR value applies to a first 40 MHz channel of the bandwidth, a second SR value applies to a second 40 MHz channel of the bandwidth, a third SR value applies to a third 40 MHz channel of the bandwidth, and a fourth SR value applies to a fourth 40 MHz channel of the bandwidth.

19. The station of claim 18, wherein the first SR value is the same as the third SR value, and the second SR value is the same as the fourth SR value when the bandwidth is 80+80 MHz.

20. The station of claim 12, wherein the four SR values are included in the trigger frame transmitted from the access point.