802.11ah duty cycle based channel access priorities

• US 9,445,349 B1
• Filed: 07/31/2013
• Issued: 09/13/2016
• Est. Priority Date: 04/18/2012
• Status: Active Grant

• Current Assignee: Marvell Asia Pte Limited (Marvell Technology Group Limited)
• Original Assignee: Marvell International Limited (Marvell Technology Group Limited)
• Inventors: Liu, Yong
• Primary Examiner(s): Christensen, Scott B
• Application Number:
  US13/955,776
• Time in Patent Office: 1,140 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0058 Allocation criteria
• CPC Class Codes: H04L 5/0076 Allocation utility-based
• CPC Class Codes: H04W 48/02 Access restriction performed under specific conditions
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 52/0209 in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• CPC Class Codes: H04W 8/24 Transfer of terminal data
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A system includes an access point and a client station. The access point is configured to control access to a communication channel of a wireless network, define a first power category and at least one second power category, each of the first power category and the at least one second power category having a respective access priority associated with access to the communication channel, and communicate a requirement for assignment to the first power category. The client station is configured to determine whether an operating characteristic of the client station meets the requirement for assignment to the first power category, and transmit, in response to a determination that the operating characteristic meets the requirements, a request to the access point to be assigned to the first power category.

Claims

1. A system, comprising:

an access point configured to i) control access to a communication channel of a wireless network, ii) define a first power category and at least one second power category, each of the first power category and the at least one second power category having a respective access priority associated with access to the communication channel, and iii) communicate a requirement for assignment to the first power category as defined by the access point; and

a client station configured to i) determine whether an operating characteristic of the client station meets the requirement for assignment to the first power category as defined by the access point, and ii) transmit, in response to a determination that the operating characteristic meets the requirement, a request to the access point to be assigned to the first power category,

wherein the access point is further configured to, based on whether the operating characteristic meets the requirement for assignment to the first power category, accept or reject the request.

2. The system of claim 1, wherein the access point is configured to assign the client station to one of the first power category and the at least one second power category based on whether the request is accepted or rejected.

3. The system of claim 1, wherein the requirements for assignment include a predetermined threshold for the operating characteristic of the client station.

4. The system of claim 1, wherein the operating characteristic includes at least one of a duty cycle of the client station, a sleep interval of the client station, and a communication channel access frequency of the client station.

5. The system of claim 1, wherein the first power category is a lower power category than the at least one second power category.

6. The system of claim 1, wherein the respective access priorities include a first access priority associated with the first power category and a second access priority associated with the at least one second power category, and wherein the first access priority is higher than the second access priority.

7. The system of claim 1, wherein the respective access priorities correspond to respective backoff times.

8. The system of claim 1, wherein the access point is configured to selectively accept or reject the request regardless of whether the operating characteristic of the client station meets the requirement for assignment to the first power category.

9. The system of claim 1, wherein the request includes an indication of the operating characteristic of the client station.

10. The system of claim 1, wherein the access point is configured to i) monitor the operating characteristic of the client station, ii) determine whether the operating characteristic of the client station meets the requirement for assignment to the first power category, and iii) assign the client station to one of the first power category and the at least one second power category based on the determination of whether the operating characteristic of the client station meets the requirement for assignment to the first power category.

11. A method, comprising:

using an access point,

controlling access to a communication channel of a wireless network,

defining a first power category and at least one second power category, each of the first power category and the at least one second power category having a respective access priority associated with access to the communication channel, and

communicating a requirement for assignment to the first power category as defined by the access point;

using a client station,

determining whether an operating characteristic of the client station meets the requirement for assignment to the first power category as defined by the access point, and

transmitting, in response to a determination that the operating characteristic meets the requirement, a request to the access point to be assigned to the first power category; and

using the access point, accepting or rejecting the request based on whether the operating characteristic meets the requirement for assignment to the first power category.

12. The method of claim 11, further comprising:

assigning the client station to one of the first power category and the at least one second power category based on whether the request is accepted or rejected.

13. The method of claim 11, wherein the requirements for assignment include a predetermined threshold for the operating characteristic of the client station.

14. The method of claim 11, wherein the operating characteristic includes at least one of a duty cycle of the client station, a sleep interval of the client station, and a communication channel access frequency of the client station.

15. The method of claim 11, wherein the first power category is a lower power category than the at least one second power category.

16. The method of claim 11, wherein the respective access priorities include a first access priority associated with the first power category and a second access priority associated with the at least one second power category, and wherein the first access priority is higher than the second access priority.

17. The method of claim 11, wherein the respective access priorities correspond to respective backoff times.

18. The method of claim 11, further comprising selectively accepting or rejecting the request regardless of whether the operating characteristic of the client station meets the requirement for assignment to the first power category.

19. The method of claim 11, wherein the request includes an indication of the operating characteristic of the client station.

20. The method of claim 11, further comprising:

using the access point,

monitoring the operating characteristic of the client station,

determining whether the operating characteristic of the client station meets the requirement for assignment to the first power category, and

assigning the client station to one of the first power category and the at least one second power category based on the determination of whether the operating characteristic of the client station meets the requirement for assignment to the first power category.