IP Library › Granted Patent US 11,218,284
Granted Patent B2
US 11,218,284 · App. 16/564,918 · Granted Jan 4, 2022

Allocating a resource unit to a station

Inventors: Pascal Thubert (Roquefort-les-Pins, FR); Jerome Henry (Pittsboro, NC); Patrick Michel Pierre Wetterwald (Mouans Sartoux, FR); Eric Michel Levy-Abegnoli (Valbonne, FR)
Assignee: CISCO TECHNOLOGY, INC.
H04L5/0098H04L5/0055H04W16/10H04W72/0453H04W72/085
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,218,284
App. No.
16/564,918
Granted
Jan 4, 2022
Kind
B2
Abstract

In one embodiment, an access point is configured with a plurality of resource units (RUs). Each RU is configured to use a frequency range that differs from frequency ranges used by the other RUs. The access point receives first information indicating, for each RU, a first signal quality that the station associates with the respective RU. The access point receives second information indicating, for each RU, a second signal quality that the station associates with the respective RU. The access point further determines, based on at least the first information and the second information, a pattern indicating a recurring signal quality that the station associates with each RU. The access point uses the pattern to allocate one of the RUs for communicating with the station.

Claims (40)

1. An access point configured with a plurality of resource units (RUs), each RU configured to use a frequency range that differs from frequency ranges used by the other RUs, the access point operable to:

receive first information from a station, the first information indicating, for each RU of the plurality of RUs, a first signal quality that the station associates with a respective RU, wherein the first signal quality that the station associates with the respective RU is affected by the frequency range of the respective RU;

receive second information from the station, the second information indicating, for each RU of the plurality of RUs, a second signal quality that the station associates with the respective RU, wherein the second signal quality that the station associates with the respective RU is affected by the frequency range of the respective RU;

determine, based on at least the first information and the second information, a pattern indicating a recurring signal quality that the station associates with each RU of the plurality of RUs; and

allocate one of the RUs for communicating with the station based at least in part on the pattern.

2. The access point of claim 1 , wherein to allocate one of the RUs for communicating with the station based at least in part on the pattern, the access point is further operable to:

use the pattern to abstain from allocating an RU for which the recurring signal quality falls below a minimum signal quality threshold; or

use the pattern to abstain from allocating an RU for which the recurring signal quality is poor compared to the recurring signal quality of one or more of the other RUs.

3. The access point of claim 1 , wherein the access point is further operable to transmit one or more signals that prompt the station to send the first information via one or more acknowledgement signals or one or more sounding response messages.

4. The access point of claim 1 , wherein the first information indicates the first signal quality by providing an indication whether the respective RU successfully received or failed to successfully receive a signal transmitted by the access point.

5. The access point of claim 1 , wherein the first information comprises an interference index for each of the plurality of RUs tested by the access point and the pattern indicates which of the plurality of RUs are affected by recurring interference.

6. The access point of claim 1 , wherein the pattern indicates a recurring pattern of multi-path fading experienced by the station when located at a given physical location.

7. The access point of claim 1 , wherein the first information is received in response to a rotation-based scanning procedure initiated by the access point, wherein the rotation-based scanning procedure prompts the station to provide the first information for each RU of the plurality of RUs.

8. The access point of claim 1 , further operable to:

periodically receive additional information from the station, the additional information indicating, for each RU of the plurality of RUs, an additional signal quality that the station associates with the respective RU, wherein the additional signal quality that the station associates with the respective RU is affected by the frequency range of the respective RU; and

update the pattern based on the additional information such that the pattern indicates a compatibility between the station and each RU over time.

9. The access point of claim 1 , wherein the access point is operable to allocate the one of the RUs based at least in part on a current channel condition.

10. The access point of claim 9 , wherein the access point is further operable to abstain from allocating an RU for which the current channel condition does not indicate an interference problem but for which the pattern indicates a recurring interference problem.

11. A method, comprising:

receiving first information from a station, the first information indicating, for each RU of a plurality of RUs associated with a given access point, a first signal quality that the station associates with a respective RU, wherein each RU corresponds to a frequency range that differs from frequency ranges corresponding to the other RUs, and wherein the first signal quality that the station associates with the respective RU is affected by the frequency range of the respective RU;

receiving second information from the station, the second information indicating, for each RU of the plurality of RUs, a second signal quality that the station associates with the respective RU, wherein the second signal quality that the station associates with the respective RU is affected by the frequency range of the respective RU;

determining, based on at least the first information and the second information, a pattern indicating a recurring signal quality that the station associates with each RU of the plurality of RUs; and

allocating one of the RUs for communications between the access point and the station based at least in part on the pattern.

12. The method of claim 11 , wherein allocating one of the RUs for communicating with the station based at least in part on the pattern comprises:

using the pattern to abstain from allocating an RU for which the recurring signal quality falls below a minimum signal quality threshold; or

using the pattern to abstain from allocating an RU for which the recurring signal quality is poor compared to the recurring signal quality of one or more of the other RUs.

13. The method of claim 11 , further comprising: transmitting one or more signals that prompt the station to send the first information via one or more acknowledgement signals or one or more sounding response messages.

14. The method of claim 11 , wherein the first information indicates the first signal quality by providing an indication whether the respective RU successfully received or failed to successfully receive a signal transmitted by the access point.

15. The method of claim 11 , wherein the first information comprises an interference index for each of the plurality of RUs tested using sounding signals and the pattern indicates which of the plurality of RUs are affected by recurring interference.

16. The method of claim 11 , wherein the pattern indicates a recurring pattern of multi-path fading experienced by the station when located at a given physical location.

17. The method of claim 11 , wherein the first information is received in response to a rotation-based scanning procedure initiated by the access point, wherein the rotation-based scanning procedure prompts the station to provide the first information for each RU of the plurality of RUs.

18. The method of claim 11 , further comprising:

periodically receiving additional information from the station, the additional information indicating, for each RU of the plurality of RUs, an additional signal quality that the station associates with the respective RU, wherein the additional signal quality that the station associates with the respective RU is affected by the frequency range of the respective RU; and

updating the pattern based on the additional information such that the pattern indicates a compatibility between the station and each RU over time.

19. A system comprising memory that stores executable instructions and processing circuitry operable to execute the instructions, whereby the system is operable to:

receive first information from a station, the first information indicating, for each RU of a plurality of RUs associated with a given access point, a first signal quality that the station associates with a respective RU, wherein each RU corresponds to a frequency range that differs from frequency ranges corresponding to the other RUs, and wherein the first signal quality that the station associates with the respective RU is affected by the frequency range of the respective RU;

receive second information from the station, the second information indicating, for each RU of the plurality of RUs, a second signal quality that the station associates with the respective RU, wherein the second signal quality that the station associates with the respective RU is affected by the frequency range of the respective RU;

determine, based on at least the first information and the second information, a pattern indicating a recurring signal quality that the station associates with each RU of the plurality of RUs; and

allocate one of the RUs for communications between the access point and the station based at least in part on the pattern.

20. The system of claim 19 , wherein the system comprises a controller operable to manage the access point and one or more other access points.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2019
From: THUBERT, PASCAL; HENRY, JEROME; WETTERWALD, PATRICK MICHEL PIERRE; LEVY-ABEGNOLI, ERIC MICHEL
To: CISCO TECHNOLOGY, INC.
Reel/Frame 050317/0814 →
Continuity (1)
Related Publication 20210075580A1 · Mar 11, 2021
Cited By (1)
US 12,289,274