IP Library › Granted Patent US 12,495,406
Granted Patent B2
US 12,495,406 · App. 18/366,307 · Granted Dec 9, 2025

Shared transmission opportunity operation in multi-access point coordination

Inventors: Sharan Naribole (San Jose, CA); Srinivas Kandala (Morgan Hill, CA); Wook Bong Lee (San Jose, CA); Ashok Ranganath (Los Gatos, CA)
Assignee: Samsung Electronics Co., Ltd.
H04W72/0453H04W88/08
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Quick Facts
Patent No.
US 12,495,406
App. No.
18/366,307
Granted
Dec 9, 2025
Kind
B2
Abstract

Disclosed is a method of setting conditions for an access point (AP) to be included in an AP candidate set of a coordinating AP for a transmission opportunity (TXOP), including setting a first primary channel of the AP as part of the AP candidate set of the coordinating AP within a basic service set (BSS) operating bandwidth of the coordinating AP, and coordinating AP updates in the AP candidate set when a coordinated AP that is part of the AP candidate set performs a channel switch to a second primary channel operating on a different bandwidth stream than a bandwidth stream of the first primary channel.

Claims (28)

1 . A method of a shared transmission opportunity (SH-TXOP) switching, comprising:

transmitting, by a plurality of shared access points (APs), a plurality of SH-TXOP switch frames in response to an SH-TXOP announcement frame; and

including, by a sharing AP, in the SH-TXOP announcement frame, information identifying whether each of the plurality of shared APs is scheduled to transmit a respective SH-TXOP switch frame.

2 . The method of claim 1 , wherein a medium access control (MAC) address of the sharing AP is reused for the respective SH-TXOP switch frame by each of the plurality of shared APs in decrypting the respective SH-TXOP switch frame.

3 . The method of claim 1 , further comprising restricting transmission of the plurality of SH-TXOP switch frames by each of the plurality of shared APs.

4 . The method of claim 1 , wherein each of the plurality of SH-TXOP switch frames contains identical content.

5 . The method of claim 1 , wherein each of the plurality SH-TXOP switch frames is transmitted simultaneously by the plurality of shared APs.

6 . The method of claim 1 , wherein the plurality of SH-TXOP switch frames are transmitted in a duplicate physical protocol data unit (PPDU) format on each 20 megahertz (MHz) channel within an 80 MHz SH-TXOP bandwidth.

7 . The method of claim 1 , wherein the plurality of SH-TXOP switch frames include a control field specifying a time interval during which each of the plurality of shared APs is permitted to transmit.

8 . A system including:

a plurality of shared access points (APs), each of the plurality of shared APs including one or more processors;

one or more memory-stored instructions, which, when executed by the one or more processors of the plurality of shared APs, cause:

transmitting, by the plurality of shared APs, a plurality of shared transmission opportunity (SH-TXOP) switch frames in response to an SH-TXOP announcement frame; and

including, by a sharing AP, in the SH-TXOP announcement frame, information identifying whether each of the plurality of shared APs is scheduled to transmit a respective SH-TXOP switch frame.

9 . The system of claim 8 , wherein a medium access control (MAC) address of the sharing AP is reused for the respective SH-TXOP switch frame by each of the plurality of shared APs in decrypting the respective SH-TXOP switch frame.

10 . The system of claim 8 , wherein the execution of the one or more memory-stored instructions further causes restricting transmission of the plurality of SH-TXOP switch frames by each of the plurality of shared APs.

11 . The system of claim 8 , wherein each of the plurality of SH-TXOP switch frames contains identical content.

12 . The system of claim 8 , wherein each of the plurality of SH-TXOP switch frames is transmitted simultaneously by the plurality of shared APs.

13 . The system of claim 8 , wherein the plurality of SH-TXOP switch frames include a control field specifying a time interval during which each of the plurality of shared APs is permitted to transmit.

14 . The system of claim 8 , wherein the plurality of SH-TXOP switch frames are transmitted in a duplicate physical protocol data unit (PPDU) format on each 20 megahertz (MHz) channel within an 80 MHz SH-TXOP bandwidth.

15 . A non-transitive computer-readable storage medium including one or more instructions, which when executed by one or more processors, cause the one or more processors to:

transmit, by a plurality of shared access points (APs), a plurality of shared transmission opportunity (SH-TXOP) switch frames in response to an SH-TXOP announcement frame; and

include, by a sharing AP, in the SH-TXOP announcement frame, information identifying whether each of the plurality of shared APs is scheduled to transmit a respective SH-TXOP switch frame.

16 . The non-transitive computer-reader storage medium of claim 15 , wherein a medium access control (MAC) address of the sharing AP is reused for the respective SH-TXOP switch frame by each of the plurality of shared APs in decrypting the respective SH-TXOP switch frame.

17 . The non-transitive computer-reader storage medium of claim 15 , wherein the execution of the one or more instructions further causes the processor to restrict transmission of the plurality of SH-TXOP switch frames by each of the plurality of shared APs.

18 . The non-transitive computer-reader storage medium of claim 15 , wherein each of the plurality of SH-TXOP switch frames contains identical content.

19 . The non-transitive computer-reader storage medium of claim 15 , wherein each of the plurality of SH-TXOP switch frames is transmitted simultaneously by the plurality of shared APs.

20 . The non-transitive computer-reader storage medium of claim 15 , wherein the plurality of SH-TXOP switch frames are transmitted in a duplicate physical protocol data unit (PPDU) format on each 20 megahertz (MHz) channel within an 80 MHz SH-TXOP bandwidth.

Continuity (3)
Continuation 17158846 · Jan 26, 2021
Provisional Application 62989097 · Mar 13, 2020
Related Publication 20230413255A1 · Dec 21, 2023
References Cited (23)
US 7269151B2 · Diener · 2007 [cited by examiner]
US 8467996B2 · Perez · 2013 [cited by examiner]
US 9628151B2 · Hessler et al. · 2017 [cited by applicant]
US 9986577B2 · Bose · 2018 [cited by examiner]
US 10687226B2 · Bahr · 2020 [cited by applicant]
US 11477730B2 · Verma · 2022 [cited by examiner]
US 11523423B2 · Seok · 2022 [cited by examiner]
US 20080062878A1 · Habetha · 2008 [cited by examiner]
US 20170188336A1 · Ahn · 2017 [cited by applicant]
US 20190246354A1 · Huang · 2019 [cited by applicant]
US 20190364433A1 · Das · 2019 [cited by examiner]
US 20200076552A1 · Cherian et al. · 2020 [cited by applicant]
US 20200084712A1 · Wu et al. · 2020 [cited by applicant]
US 20200120544A1 · Liu et al. · 2020 [cited by applicant]
US 20200245352A1 · Seok · 2020 [cited by applicant]
US 20200287664A1 · Fang · 2020 [cited by examiner]
US 20210022178A1 · Verma · 2021 [cited by examiner]
US 20210058936A1 · Gordaychik · 2021 [cited by applicant]
US 20230096690A1 · Nezou · 2023 [cited by examiner]
US 20230103807A1 · Park · 2023 [cited by examiner]
US 20230412330A1 · Verma · 2023 [cited by examiner]
EP 3123759 · 2019 [cited by applicant]
Taiwanese Office Action dated Dec. 11, 2024 issued in counterpart application No. 110108654, 5 pages. [cited by applicant]