IP Library › Granted Patent US 11,917,671
Granted Patent B2
US 11,917,671 · App. 17/898,005 · Granted Feb 27, 2024

WiFi channel selection and subchannel selective transmissions

Inventors: Xiaofei Wang (North Caldwell, NJ); Guodong Zhang (Woodbury, NY)
Assignee: InterDigital Patent Holdings, Inc.
H04W72/542H04W74/0816H04W84/12
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Quick Facts
Patent No.
US 11,917,671
App. No.
17/898,005
Granted
Feb 27, 2024
Kind
B2
Abstract

A station (STA) may include an antenna and a processor operatively coupled to the antenna. The processor and the antenna may be configured to send, to an access point (AP), a first message including an indication of one or more secondary channels in an operating band. The operating band may include a primary channel and the one or more secondary channels. The processor and the antenna may be further configured to receive, from the AP, a second message including an indication of a channel of the one or more secondary channels to use in a scheduled transmission period.

Claims (30)

1. A station (STA) comprising:

a processor;

a receiver; and

a transmitter,

the processor and the transmitter configured to send, to an access point (AP), feedback regarding a desired primary channel of the STA, wherein the desired primary channel of the STA is a secondary channel of the AP available to monitor during a subchannel selective transmission (SST) period; and

the processor and the receiver configured to receive, from the AP, a message comprising a bitmap indicating an assigned primary channel of the STA, wherein the assigned primary channel of the STA is one secondary channel of the AP allowed for use during a target wake time (TWT) period.

2. The STA of claim 1 , wherein the assigned primary channel of the STA that is allowed for use during the TWT period is the same as the desired primary channel of the STA that is available to monitor during the SST period.

3. The STA of claim 1 , wherein the processor and the transmitter are further configured to access a wireless medium based on the assigned primary channel of the STA that is allowed for use during the TWT period.

4. The STA of claim 1 , wherein the message comprises a beacon frame.

5. The STA of claim 1 , wherein the feedback is sent on a primary channel of the AP.

6. The STA of claim 1 , wherein the message is received on a primary channel of the AP.

7. A method of use in a station (STA), the method comprising:

sending, to an access point (AP), feedback regarding a desired primary channel of the STA, wherein the desired primary channel of the STA is a secondary channel of the AP available to monitor during a subchannel selective transmission (SST) period; and

receiving, from the AP, a message comprising a bitmap indicating an assigned primary channel of the STA, wherein the assigned primary channel of the STA is one secondary channel of the AP allowed for use during a target wake time (TWT) period.

8. The method of claim 7 , wherein the assigned primary channel of the STA that is allowed for use during the TWT period is the same as the desired primary channel of the STA that is available to monitor during the SST period.

9. The method of claim 7 , further comprising accessing a wireless medium based on the assigned primary channel of the STA that is allowed for use during the TWT period.

10. The method of claim 7 , wherein the message comprises a beacon frame.

11. The method of claim 7 , wherein the feedback is sent using a primary channel of the AP.

12. The method of claim 7 , wherein the message is received on a primary channel of the AP.

13. An access point (AP) comprising:

a processor;

a receiver; and

a transmitter,

the processor and the receiver configured to receive, from a station (STA), feedback regarding a desired primary channel of the STA, wherein the desired primary channel of the STA is a secondary channel of the AP available to monitor during a subchannel selective transmission (SST) period; and

the processor and the transmitter configured to send, to the STA, a message comprising a bitmap indicating an assigned primary channel of the STA, wherein the assigned primary channel of the STA is one secondary channel of the AP allowed for use during a target wake time (TWT) period.

14. The AP of claim 13 , wherein the assigned primary channel of the STA that is allowed for use during the TWT period is the same as the desired primary channel of the STA that is available to monitor during the SST period.

15. The AP of claim 13 , wherein the processor and the receiver are further configured to receive a transmission form the STA to access a wireless medium based on the assigned primary channel of the STA that is allowed for use during the TWT period.

16. The AP of claim 13 , wherein the message comprises a beacon frame.

17. The AP of claim 13 , wherein the feedback is received on a primary channel of the AP.

18. The AP of claim 13 , wherein the message is sent on a primary channel of the AP.

Continuity (4)
Continuation 16272161 · Feb 11, 2019
Continuation 14896012
Provisional Application 61831988 · Jun 6, 2013
Related Publication 20220417939A1 · Dec 29, 2022
Cited By (1)
US 12,563,585