Dynamic interference response in wireless local area networks

Patent metadata

Field	Value
Publication number	US-12470322-B2
Application number	US-202318173502-A
Country	US
Kind code	B2
Filing date	Feb 23, 2023
Priority date	Feb 23, 2023
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

An unsafe frequency report from a client device is received, the unsafe frequency report indicating that the client device is experiencing interference on a set of frequencies. A set of safe frequencies is identified, for the client device, based on interference indicated in the unsafe frequency report, and dynamic puncturing is performed based on the unsafe frequency report, comprising identifying an allocation of wireless resources for the client device during a transmission opportunity based on the set of safe frequencies, where the allocation of wireless resources punctures one or more of the set of frequencies, and communicating with the client device using the allocation of wireless resources.

First claim

We claim:

1 . A method, comprising:
receiving, by a wireless access point (AP) of a set of wireless APs, a first unsafe frequency report from a first client device, the first unsafe frequency report indicating that the first client device is experiencing interference on a first set of frequencies; identifying, for the first client device, a set of safe frequencies based on interference indicated in the first unsafe frequency report; and performing dynamic puncturing based on the first unsafe frequency report, comprising:
identifying, by a multi-AP coordinator, an allocation of wireless resources for the first client device during a first transmission opportunity based on the set of safe frequencies and a set of unsafe frequency reports for the set of wireless APs, wherein the allocation of wireless resources punctures one or more of the first set of frequencies; and
communicating with the first client device using the allocation of wireless resources.

2 . The method of claim 1 , further comprising:
receiving, by the wireless AP, a set of unsafe frequency reports from a set of client devices; and performing dynamic puncturing based on the set of unsafe frequency reports.

3 . The method of claim 1 , wherein the allocation of wireless resources punctures the one or more of the first set of frequencies for each wireless AP of the set of wireless APs.

4 . The method of claim 1 , wherein identifying the set of safe frequencies comprises identifying, based on the first unsafe frequency report, that interference on each respective frequency of the set of safe frequencies is satisfies one or more criteria.

5 . The method of claim 1 , wherein the first unsafe frequency report is provided by the first client device upon association to the wireless AP.

6 . The method of claim 1 , further comprising:
receiving, by the wireless AP, an updated unsafe frequency report from the first client device; and performing dynamic puncturing based on the updated unsafe frequency report.

7 . The method of claim 6 , wherein the first client device transmitted the updated unsafe frequency report in response to determining that interference experienced by the first client device has changed.

8 . The method of claim 6 , wherein the first client device transmitted the updated unsafe frequency report in response to a query transmitted, by the wireless AP, to the first client device.

9 . The method of claim 1 , wherein performing dynamic puncturing based on the first unsafe frequency report further comprises:
generating a second allocation of wireless resources for a second client device during the first transmission opportunity, wherein the second allocation of wireless resources does not puncture the first set of frequencies; and communicating with the second client device using the second allocation of wireless resources.

10 . A non-transitory computer-readable medium containing computer program code that, when executed by operation of one or more computer processors, performs an operation comprising:
receiving, by a wireless access point (AP) of a set of wireless APs, a first unsafe frequency report from a first client device, the first unsafe frequency report indicating that the first client device is experiencing interference on a first set of frequencies; identifying, for the first client device, a set of safe frequencies based on interference indicated in the first unsafe frequency report; and performing dynamic puncturing based on the first unsafe frequency report, comprising:
identifying, by a multi-AP coordinator, an allocation of wireless resources for the first client device during a first transmission opportunity based on the set of safe frequencies and a set of unsafe frequency reports for the set of wireless APs, wherein the allocation of wireless resources punctures one or more of the first set of frequencies; and
communicating with the first client device using the allocation of wireless resources.

11 . The non-transitory computer-readable medium of claim 10 , the operation further comprising:
receiving, by the wireless AP, a set of unsafe frequency reports from a set of client devices; and performing dynamic puncturing based on the set of unsafe frequency reports.

12 . The non-transitory computer-readable medium of claim 10 , wherein identifying the set of safe frequencies comprises identifying, based on the first unsafe frequency report, that interference on each respective frequency of the set of safe frequencies is satisfies one or more criteria.

13 . The non-transitory computer-readable medium of claim 10 , the operation further comprising:
receiving, by the wireless AP, an updated unsafe frequency report from the first client device; and performing dynamic puncturing based on the updated unsafe frequency report.

14 . The non-transitory computer-readable medium of claim 13 , wherein the first client device transmitted the updated unsafe frequency report in response to determining that interference experienced by the first client device has changed.

15 . The non-transitory computer-readable medium of claim 10 , wherein performing dynamic puncturing based on the first unsafe frequency report further comprises:
generating a second allocation of wireless resources for a second client device during the first transmission opportunity, wherein the second allocation of wireless resources does not puncture the first set of frequencies; and communicating with the second client device using the second allocation of wireless resources.

16 . A system, comprising:
one or more computer processors; and a memory containing a program which when executed by the one or more computer processors performs an operation, the operation comprising:
receiving, by a wireless access point (AP) of a set of wireless APs, a first unsafe frequency report from a first client device, the first unsafe frequency report indicating that the first client device is experiencing interference on a first set of frequencies;
identifying, for the first client device, a set of safe frequencies based on interference indicated in the first unsafe frequency report; and
performing dynamic puncturing based on the first unsafe frequency report, comprising:
identifying, by a multi-AP coordinator, an allocation of wireless resources for the first client device during a first transmission opportunity based on the set of safe frequencies, wherein the allocation of wireless resources punctures one or more of the first set of frequencies and a set of unsafe frequency reports for the set of wireless APs; and
communicating with the first client device using the allocation of wireless resources.

17 . The system of claim 16 , the operation further comprising:
receiving, by the wireless AP, a set of unsafe frequency reports from a set of client devices; and performing dynamic puncturing based on the set of unsafe frequency reports.

18 . The system of claim 16 , wherein identifying the set of safe frequencies comprises identifying, based on the first unsafe frequency report, that interference on each respective frequency of the set of safe frequencies is satisfies one or more criteria.

19 . The system of claim 16 , the operation further comprising:
receiving, by the wireless AP, an updated unsafe frequency report from the first client device; and performing dynamic puncturing based on the updated unsafe frequency report.

20 . The system of claim 16 , wherein performing dynamic puncturing based on the fi

Assignees

• Cisco Tech Inc

Inventors

• Gandhi Indermeet S
• Smith Malcolm M
• Henry Jerome

Classifications

• H04B17/336 Primary

  Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] · CPC title

• H04L1/0068 Primary

  by puncturing · CPC title