Load based probe response scheduling

• US 10,034,300 B2
• Filed: 06/10/2010
• Issued: 07/24/2018
• Est. Priority Date: 06/10/2010
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Rangarajan, Hari, Pang, Tak Ming, Shetty, Sandeep
• Primary Examiner(s): Biagini, Christopher
• Application Number:
  US12/797,913
• Publication Number:
  US 20110307609A1
• Time in Patent Office: 2,966 Days
• Field of Search: 370338
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/52 based on load

Abstract

In an example embodiment, an apparatus comprising an interface configured to communicate with at least one wireless transceiver, and a controller coupled to the interface. The controller is configured to determine a predefined characteristic such as current load and/or interference for a wireless channel associated with the at least one wireless transceiver. The controller is operable to suppress sending a probe response in response to the at least one wireless transceiver receiving a probe request, wherein how often probe responses are suppressed is based on the predefined characteristic for the wireless channel.

Claims

1. A method, comprising:

receiving a wireless signal from a wireless device;

determining whether the wireless device is capable of communicating on multiple channels;

after determining the wireless device is capable of communicating on multiple channels, suppressing a probe response to a probe request received from the wireless device on a first channel; and

waiting for a predetermined amount of time to determine whether the wireless device associates with a second channel; and

sending the probe response to the probe request on the first channel responsive to determining the predetermined amount of time has expired.

2. The method according to claim 1, further comprising sending a probe response to the wireless device responsive to receiving a probe request on the second channel.

3. The method according to claim 1, further comprising:

receiving a wireless signal from a second wireless device;

determining whether the wireless device is capable of communicating on multiple channels; and

sending a probe response for a probe request received from the second wireless device on the first channel responsive to determining the wireless device is incapable of communicating on multiple channels.

4. Logic encoded on at least one non-transitory computer readable medium for execution, and when executed operable to:

receive data representative of a signal strength for a wireless device from a plurality of wireless transceivers;

suppress sending a response to a signal from the wireless device for a predetermined time period during which the wireless device transmits probe requests on multiple channels; and

select a selected one of the plurality of wireless transceivers that received the signal from the wireless device to respond to the signal from the wireless device based on received signal strength.

5. The logic of claim 4, wherein the logic is further operable to select the selected one of the plurality of wireless transceivers based on current load and received signal strength.