CHANNEL AVAILABILITY CHECKS WITH DEVICE MONITORING

• US 20170063665A1
• Filed: 09/01/2015
• Published: 03/02/2017
• Est. Priority Date: 09/01/2015
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Inventors: Hoang, Peter, Casebolt, Mark W., Svidenko, Vicky, Russo, David W.
• Granted Patent: US 9,843,494 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 36/06 Reselecting a communication resource in the serving access point
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 76/18 Management of setup rejection or failure
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

The disclosed subject matter includes techniques for performing a channel availability check. A method includes initiating, via a processor of a master device, a first connection on a first wireless channel with a subordinate device and transmitting, via the processor, a beacon to the subordinate device. The method includes monitoring, via the processor, the first wireless channel for a first predetermined amount of time for a connection request from the subordinate device in response to the beacon. The method includes performing the channel availability check to detect energy profiles on a second wireless channel for a second predetermined amount of time after the first predetermined amount of time. The processor may cycle between transmitting the beacon and monitoring the first wireless channel and performing the channel availability check on the second wireless channel until a threshold time is exceeded, the connection request is detected, or an energy profile is detected.

Claims

1. A system for performing a channel availability check, comprising:

a processor; and

a computer-readable memory storage device storing executable instructions that can be executed by the processor to cause the processor to;

initiate a first connection on a first wireless channel with a subordinate device and transmit a beacon to the subordinate device, and to monitor the first wireless channel for a first predetermined amount of time for a connection request from the subordinate device in response to the beacon;

perform the channel availability check to detect energy profiles on a second wireless channel for a second predetermined amount of time after the first predetermined amount of time, the processor to cycle between transmitting the beacon and monitoring the first wireless channel and performing the channel availability check on the second wireless channel until a threshold time is exceeded, the connection request is detected, or an energy profile is detected; and

migrate the first connection to the second wireless channel if the threshold time is exceeded.

2. The system of claim 1, wherein the processor is to stop cycling between performing the channel availability check and monitoring the first wireless channel if a connection request is detected, and service the subordinate device on the first wireless channel.

3. The system of claim 1, wherein the processor is to stop cycling between performing the channel availability check and monitoring the first wireless channel and service the subordinate device via the first wireless channel if the energy profile is detected.

4. The system of claim 1, wherein the processor is to monitor for the energy profile on the second wireless channel after the first connection is migrated.

5. The system of claim 1, wherein the threshold time exceeds a predetermined full CAC value.

6. The system of claim 1, wherein the beacon and the connection request are to be transmitted at a predetermined transmitted power.

7. The system of claim 1, wherein the second wireless channel comprises a dynamic frequency selection (DFS) channel.

8. A method for performing a channel availability check, comprising:

initiating, via a processor of a master device, a first connection on a first wireless channel with a subordinate device;

transmitting, via the processor, a beacon to the subordinate device;

monitoring, via the processor, the first wireless channel for a first predetermined amount of time for a connection request from the subordinate device in response to the beacon; and

performing the channel availability check to detect energy profiles on a second wireless channel for a second predetermined amount of time after the first predetermined amount of time, the processor to cycle between transmitting the beacon and monitoring the first wireless channel and performing the channel availability check on the second wireless channel until a threshold time is exceeded, the connection request is detected, or an energy profile is detected.

9. The method of claim 8, further comprising stopping the channel availability check and servicing the subordinate device on the first wireless channel if the connection request is detected.

10. The method of claim 8, further comprising stopping the channel availability check and performing the channel availability check on a third wireless channel if the energy profile is detected.

11. The method of claim 8, further comprising migrating the first connection to a second connection on the second wireless channel if the threshold time is exceeded without any detected energy profile and without any detected connection request.

12. The method of claim 11, further comprising performing in-service monitoring to detect energy profiles on the second wireless channel and migrating the second connection to a third connection on the first wireless channel if an priority energy profile is detected on the second wireless channel.

13. The method of claim 8, wherein the master device and the subordinate device operate at a predetermined transmitter power.

14. The method of claim 8, wherein the threshold time exceeds a predetermined full CAC value.

15. The method of claim 8, wherein the second wireless channel comprises a dynamic frequency selection (DFS) channel.

16. One or more computer-readable memory storage devices for storing computer readable instructions that, when executed by one or more processing devices, instruct the performance of a channel availability check, the computer-readable instructions comprising code to:

initiate a first connection on a first wireless channel with a subordinate device and transmit a beacon to the subordinate device;

monitor the first wireless channel for a first predetermined amount of time for a connection request from the subordinate device in response to the beacon;

perform the channel availability check to detect energy profiles on a second wireless channel for a second predetermined amount of time after the first predetermined amount of time, the one or more processing devices to cycle between transmitting the beacon and monitoring the first wireless channel and performing the channel availability check on the second wireless channel until a threshold time is exceeded, the connection request is detected, or an energy profile is detected; and

migrate the first connection to a second connection on the second wireless channel if the threshold time is exceeded.

17. The one or more computer-readable memory storage devices of claim 16, further comprising code to perform in-service monitoring on the second wireless channel after the first connection is migrated.

18. The one or more computer-readable memory storage devices of claim 17, further comprising code to migrate the second connection back to the first wireless channel if an energy profile is detected.

19. The one or more computer-readable memory storage devices of claim 16, further comprising code to perform the channel availability check on a third wireless channel if the channel availability check detects a priority energy profile on the second wireless channel.

20. The one or more computer-readable memory storage devices of claim 16, further comprising code to service the subordinate device if the connection request is detected.