System and network for wireless network monitoring

• US 8,514,827 B2
• Filed: 02/14/2012
• Issued: 08/20/2013
• Est. Priority Date: 10/13/2005
• Status: Active Grant

• Current Assignee: Trapeze Networks Incorporated (Juniper Networks Incorporated)
• Original Assignee: Trapeze Networks Incorporated (Juniper Networks Incorporated)
• Inventors: Matta, Sudheer Poorna Chandra, Tiwari, Manish
• Primary Examiner(s): RAMPURIA, SHARAD K
• Application Number:
  US13/396,124
• Publication Number:
  US 20120140705A1
• Time in Patent Office: 553 Days
• Field of Search: 455/434, 455/41.2, 370/328, 370/331, 370/338, 370/310.2, 370/315
• US Class Current: 370/338
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 48/12 using downlink control channel

Abstract

A technique for wireless network monitoring involves scanning channels using clients instead of access points. An example of a method according to the technique may include, for example, receiving from a wireless access point a command to perform a channel scanning function, listening on a channel associated with the channel scanning function, and sending RF data found on the channel to the wireless access point. Another example of a method according to the technique may include, for example, scanning a first channel, switching from the first channel to a second channel, sending data on the second channel to an access point, switching from the second channel to the first channel, and resuming scanning on the first channel. A system according to the technique may include one or more scanning clients, proxy clients, multi-channel clients, or other clients that are capable of scanning channels in lieu of an access point.

Claims

1. A method comprising:

receiving, at a proxy client device, a command from an access point on a first channel;

forwarding the command from the proxy client device to a client device on the second channel;

receiving, at the proxy client device and from the client device, a report that is responsive to the command; and

forwarding the report from the proxy client device to the access point.

2. The method of claim 1, wherein the proxy client device is a non-access point.

3. The method of claim 1, wherein the report includes a frame report frame.

4. The method of claim 1, wherein switching the proxy client to the second channel is in response to the command.

5. The method of claim 1, wherein the report is based on one or more of a channel number, a frame type, and a frame subtype.

6. The method of claim 1, furthering comprising listening on the second channel for a predetermined period of time.

7. The method of claim 1, wherein the receiving includes receiving the command by the access point via a switch.

8. An apparatus, comprising:

a client device configured to be operatively coupled to a proxy client device that is operatively coupled to an access point,

the client device configured to receive, from the proxy client device and on a first channel, a command that was received by the proxy client device on a second channel from the access point,

the client device configured to send a report to the proxy client device on the second channel such that the proxy client device forwards the report to the access point on the first channel.

9. The apparatus of claim 8, wherein the report includes a frame report frame.

10. The apparatus of claim 8, wherein the report is based on one or more of a channel number, a frame type, and a frame subtype.

11. The apparatus of claim 8, wherein:

the report is a first report,

the client device is configured to send the first report, at a first time, to the proxy client device,

the client device is configured to send a second report, at a second time before the first time, to the proxy client device on the second channel such that the proxy client device forwards the second report to the access point on the first channel.

12. The apparatus of claim 8, wherein the proxy client device is a non-access point.

13. The apparatus of claim 8, wherein the command is based on a connectivity outage.

14. The apparatus of claim 8, wherein the client device is configured to send the report to the access point on the first channel.

15. A method, comprising:

receiving, at a proxy client device at a first time, a first command from an access point on a first channel;

forwarding the first command from the proxy client device to a client device on a second channel;

receiving, at the proxy client device and from the client device, a report that is responsive to a second command received at a second time prior to the first time; and

forwarding the report from the proxy client device to the access point.

16. The method of claim 15, wherein the proxy client device is a non-access point.

17. The method of claim 15, wherein the report includes a frame report frame.

18. The method of claim 15, wherein the report is based on one or more of a channel number, a frame type, and a frame subtype.

19. The method of claim 15, wherein the first command is based on a suspicious network activity trigger and the second command is based on a schedule trigger.

20. The method of claim 15, further comprising forwarding the report from the proxy client device to the access point such that the access point forwards the report to a switch.