System and method for wake on wireless lan

• US 20050154933A1
• Filed: 07/22/2004
• Published: 07/14/2005
• Est. Priority Date: 07/22/2003
• Status: Abandoned Application

• Current Assignee: Smith Micro Software Incorporated
• Original Assignee: Smith Micro Software Incorporated
• Inventors: Hsu, Tseng Jan, Shu, Zhengjin
• Application Number:
  US10/898,461
• Publication Number:
  US 20050154933A1
• Time in Patent Office: Days
• US Class Current: 713/320
• CPC Class Codes: H04L 41/0806 for initial configuration or provisioning, e.g. plug-and-play
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A system and method for energy conservation in wireless networks includes techniques for powering down a Soft AP device while still maintaining compliance with the “always on” requirement for access points in wireless networks. The system and method includes a technique for causing a host system having a Soft AP device integrated therein to go into a low power, or energy conservation mode when no wireless activity has occurred over a predetermined period, and for monitoring to identify appropriate signals even while in the low power mode. If an appropriate signal is detected, a wake up signal is generated and the host system, including the Soft AP device, is returned to normal functionality.

Claims

1. A method for reducing energy consumption in a software-based wireless access point for computer networking comprising the steps of

monitoring activity on the access point for a predetermined period,

causing the access point to enter a power-saving mode when no activity occurs on the access point for the predetermined period, and

restoring the access point to normal functionality when a request for communications with the access point is detected.

2. The method of claim 1 wherein a request for communication is communicated by a radio signal.

3. The method of claim 1 wherein the restoring step includes generating a standard power management enable signal to wake a host computer.

4. A recording medium for recording in a computer-readable fashion a program for cooperating with a wireless network access device operatively connected to a host computer to cause the wireless network access device to operate as a software-based access point, the recording medium having instructions to perform the following steps on a microprocessor:

monitoring the activity of the wireless network access device,

in response to a lack of activity for a predetermined period of time, selectively powering down portions of the network access device while maintaining the ability to detect requests for communication with the network access device, and

responding to a request for communication by restoring full functionality.

5. A system for reducing power to a wireless network access device comprising

a microprocessor,

memory operatively connected to the microprocessor for storing data,

a timer for determining when a lack of activity has continued for a predetermined period,

a command program stored in the memory for removing power to a portion of the wireless network access device while still monitoring requests for communication with he access device, the command program further causing the restoration of power to the wireless network access device in response to a request for communication.