Access point steering

• US 9,913,193 B2
• Filed: 09/16/2015
• Issued: 03/06/2018
• Est. Priority Date: 02/20/2015
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Ho, Sai Yiu Duncan, Chakravarty, Bharat Bhushan, Buesker, Brian Michael, Venkateshwaran, Ramaswamy
• Primary Examiner(s): Ghowrwal, Omar
• Application Number:
  US14/855,735
• Publication Number:
  US 20160249267A1
• Time in Patent Office: 902 Days
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 36/22 for handling the traffic
• CPC Class Codes: H04W 36/30 by measured or perceived connection quality data
• CPC Class Codes: H04W 48/02 Access restriction performed under specific conditions
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 8/18 Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A first access point (AP) detects a communication between a client device and a second AP. The first AP determines at least one criteria for AP steering is satisfied. AP steering is then used by the first AP to cause the client device to associate with the first AP, or a particular network of the first AP. For example, the first AP may transmit a disassociation message to the client device. The disassociation message may identify the second AP associated with the client device and cause the client device to disassociate from the second AP. After the client device disassociates from the second AP, the client device may select and associate with the first AP. The first AP may manage which network the client device associates with using a blacklist at the first AP.

Claims

1. A method performed by a first access point (AP) for steering a client device from a second AP to the first AP, the method comprising:

detecting a first message between the client device and the second AP, the first message indicative that the client device is wirelessly associated with the second AP, wherein a first network administered by the first AP is different from a second network administered by the second AP;

determining that the first AP is a primary AP for the client device based, at least in part, on a list of previous associations between the client device and the first network administered by the first AP;

determining to steer the client device from the second AP to the first AP in response to a determination that the first AP is the primary AP for the client device; and

transmitting a disassociation message from the first AP to the client device, wherein, instead of identifying the first AP as a sender of the disassociation message, the disassociation message identifies the second AP as the sender of the disassociation message, and wherein the disassociation message is transmitted in response to said determining to steer the client device from the second AP to the first AP.

2. The method of claim 1, further comprising:

generating, by the first AP, the disassociation message to mimic a communication from the second AP to the client device.

3. The method of claim 2, wherein

said transmitting the disassociation message from the first AP to the client device causes the client device to disassociate from the second AP.

4. The method of claim 1 further comprising, after said transmitting the disassociation message to the client device, receiving, by the first AP, an association request from the client device.

5. The method of claim 1, wherein determining that the first AP is the primary AP for the client device includes:

determining that the second AP is not the primary AP for the client device based.

6. The method of claim 1, further comprising maintaining the list of previous associations between the client device and the first network administered by the first AP.

7. The method of claim 1, wherein the first network is a private network comprising credentials to limit access to the private network.

8. The method of claim 1, wherein said determining to steer the client device from the second AP to the first AP further comprises:

determining that a quality of service attribute associated with the first AP is greater than a threshold; and

determining that the client device is not currently associated with the first AP.

9. The method of claim 8, wherein the quality of service attribute comprises at least one member selected from a group consisting of:

a signal strength between the first AP and the client device, a wireless transmission delay, and a throughput associated with a modulation and coding scheme used for communications between the first AP and the client device.

24. The method of claim 1, wherein said determining to steer the client device from the second AP to the first AP further comprises determining that the first network has a first priority that is higher than a second priority for the second network.

25. The method of claim 1, further comprising:

determining a first network identifier associated with the first network administered by the first AP;

determining a second network identifier associated with the second network administered by the second AP based, at least in part, on the first message, wherein the second network identifier is different from the first network identifier; and

transmitting a second message to the client device, the second message including the first network identifier and the second network identifier.

26. The method of claim 25, wherein the second message comprises a beacon message or probe response message.

10. A first access point (AP), comprising:

a processor;

a wireless network interface coupled with the processor; and

a memory having instructions stored therein which, when executed by the processor, cause the first AP to;

detect a first message between a client device and a second AP, the first message indicative that the client device is wirelessly associated with the second AP, wherein a first network administered by the first AP is different from a second network administered by the second AP;

determine that the first AP is a primary AP for the client device based, at least in part, on a list of previous associations between the client device and the first network administered by the first AP;

determine to steer the client device from the second AP to the first AP in response to a determination that the first AP is the primary AP for the client device; and

transmit a disassociation message from the first AP to the client device, wherein, instead of identifying the first AP as a sender of the disassociation message, the disassociation message identifies the second AP as the sender of the disassociation message, and wherein the disassociation message is transmitted in response to a determination to steer the client device from the second AP to the first AP.

11. The first AP of claim 10, wherein the instructions to determine that the first AP is the primary AP for the client device include instructions which, when executed by the processor, cause the first AP to:

determine that the second AP is not the primary AP for the client device.

12. The first AP of claim 10, wherein the instructions, when executed by the processor, cause the first AP to maintain the list of previous associations between the client device and the first network administered by the first AP.

13. The first AP of claim 10, wherein the instructions to cause the first AP to determine to steer the client device from the second AP to the first AP comprise instructions which, when executed by the processor, further cause the first AP to:

determine that a quality of service attribute associated with the first AP is greater than a threshold; and

determine that the client device is not currently associated with the first AP.

27. The first AP of claim 10, wherein the instructions, when executed by the processor, cause the first AP to:

generate, by the first AP, the disassociation message to mimic a communication from the second AP to the client device.

28. The first AP of claim 10, wherein the instructions, when executed by the processor, cause the first AP to:

determine a first network identifier associated with the first network administered by the first AP;

determine a second network identifier associated with the second network administered by the second AP based, at least in part, on the first message, wherein the second network identifier is different from the first network identifier; and

transmit a second message to the client device, the second message including the first network identifier and the second network identifier.

29. The first AP of claim 28, wherein the second message comprises a beacon message or probe response message.

14. A non-transitory machine-readable medium comprising instructions, which when executed by a processor of a first access point (AP) for steering a client device from a second AP to the first AP, cause the first AP to:

detect a first message between the client device and the second AP, the first message indicative that the client device is wirelessly associated with the second AP, wherein a first network administered by the first AP is different from a second network administered by the second AP;

determine that the first AP is a primary AP for the client device based, at least in part, on a list of previous associations between the client device and the first network administered by the first AP;

determine to steer the client device from the second AP to the first AP in response to a determination that the first AP is the primary AP for the client device; and

transmit a disassociation message from the first AP to the client device, wherein, instead of identifying the first AP as a sender of the disassociation message, the disassociation message identifies the second AP as the sender of the disassociation message, and wherein the disassociation message is transmitted in response to a determination to steer the client device from the second AP to the first AP.

15. The non-transitory machine-readable medium of claim 14, wherein the instructions to determine that the first AP is the primary AP for the client device include instructions which, when executed by the processor, cause the first AP to:

determine that the second AP is not the primary AP for the client device.

16. The non-transitory machine-readable medium of claim 14, wherein the instructions, when executed by the processor, cause the first AP to maintain the list of previous associations between the client device and the first network administered by the first AP.

17. The non-transitory machine-readable medium of claim 14, wherein the first network is a private network comprising credentials to limit access to the private network.

18. The non-transitory machine-readable medium of claim 14, wherein the instructions to determine to steer the client device from the second AP to the first AP further comprises:

instructions to determine that a quality of service attribute associated with the first AP is greater than a threshold; and

instructions to determine that the client device is not currently associated with the first AP.

19. The non-transitory machine-readable medium of claim 18, wherein the quality of service attribute comprises at least one member selected from a group consisting of a signal strength between the first AP and the client device, a wireless transmission delay, and a throughput associated with a modulation and coding scheme used for communications between the first AP and the client device.

20. The non-transitory machine-readable medium of claim 14, wherein the instructions further comprise instructions to, after transmission of the disassociation message to the client device, receive an association request from the client device.

21. The non-transitory machine-readable medium of claim 14, wherein the instructions further comprise instructions to:

determine a first network identifier associated with the first network administered by the first AP;

determine a second network identifier associated with the second network administered by the second AP based, at least in part, on the first message, wherein the second network identifier is different from the first network identifier; and

transmit a second message to the client device, the second message including the first network identifier and the second network identifier.

22. The non-transitory machine-readable medium of claim 21, wherein the second message comprises a beacon message or probe response message.

23. The non-transitory machine-readable medium of claim 14, wherein the instructions further comprise instructions to:

generate, by the first AP, the disassociation message to mimic a communication from the second AP to the client device.

30. A first access point (AP) for steering a client device from a second AP to the first AP, the first AP comprising:

means for detecting a first message between the client device and the second AP, the first message indicative that the client device is wirelessly associated with the second AP, wherein a first network administered by the first AP is different from a second network administered by the second AP;

means for determining that the first AP is a primary AP for the client device based, at least in part, on a list of previous associations between the client device and the first network administered by the first AP;

means for determining to steer the client device from the second AP to the first AP in response to a determination that the first AP is the primary AP for the client device; and

means for transmitting a disassociation message from the first AP to the client device, wherein, instead of identifying the first AP as a sender of the disassociation message, the disassociation message identifies the second AP as the sender of the disassociation message, and wherein the disassociation message is transmitted in response to said means for determining to steer the client device from the second AP to the first AP.

31. The first AP of claim 30, further comprising:

means for generating, by the first AP, the disassociation message to mimic a communication from the second AP to the client device.

32. The first AP of claim 30, further comprising:

means for determining a first network identifier associated with the first network administered by the first AP;

means for determining a second network identifier associated with the second network administered by the second AP based, at least in part, on the first message, wherein the second network identifier is different from the first network identifier; and

means for transmitting a second message to the client device, the second message including the first network identifier and the second network identifier.

33. The first AP of claim 32, wherein the second message comprises a beacon message or probe response message.