Method for conserving energy in a multimode communication device

• US 7,657,239 B2
• Filed: 12/06/2005
• Issued: 02/02/2010
• Est. Priority Date: 12/06/2005
• Status: Expired due to Fees

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Doradla, Anil, Bridges, J. Bradley, Wolter, David
• Primary Examiner(s): Anderson; Matthew D
• Assistant Examiner(s): Dao; Minh D
• Application Number:
  US11/296,721
• Publication Number:
  US 20070129092A1
• Time in Patent Office: 1,519 Days
• Field of Search: 455/161.1, 455/161.3, 455/343.2, 455/343.5, 455/41.2, 709/227, 709/232, 370/328, 370/338
• US Class Current: 455/161.1
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 52/0225 using monitoring of external events, e.g. the presence of a signal
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A system and methods (300, 400) are disclosed for conserving energy in a multimode communication device (106). A system that incorporates teachings of the present disclosure may include, for example, a communication device having a multimode wireless transceiver (202) for accessing a plurality of wireless access technologies (103), and a controller (214) for managing operations of the multimode wireless transceiver. The controller is programmed to enable (300) scanning for a select one of the wireless access technologies when the communication device is near a known location of a wireless access point. An embodiment for a network management system (100) is also disclosed.

Claims

1. A communication device, comprising:

a multimode wireless transceiver for accessing a plurality of wireless access technologies; and

a controller for managing operations of the multimode wireless transceiver, wherein the controller is programmed to enable the multimode wireless transceiver to scan a select one of the wireless access technologies when the communication device detects that it is near a known location of a wireless access point, wherein prior to the enabling step the multimode wireless transceiver is disabled to scan the select one of the access technologies in order to conserve energy,

wherein the controller is programmed to;

monitor a location of the communication device;

detect that the communication device is near the known location of the wireless access point; and

enable scanning in response to said detection, and

wherein when the controller detects that a signal strength is undesirable, the controller is programmed to check for a manual override from an end user of the communication device, and when the end user forces a scan, the controller enables communications with the wireless access point.

2. The communication device of claim 1, wherein the controller is programmed to conserve energy while the communication device is out of a communication range of the wireless access point.

3. A network management system (NMS), comprising:

a communications interface for exchanging messages with communication devices capable of accessing a plurality of wireless access technologies; and

a controller for managing operations of the communications interface, wherein the controller is programmed to assist a communication device in locating one among the plurality of wireless access points to conserve energy in the communication device, wherein the controller is programmed to;

monitor a location of the communication device; and

transmit a vicinity indication to the communication device when it is near a select one of the plurality of wireless access points for enabling in the communication device a process for scanning said wireless access point, and

wherein when the controller detects that a signal strength is undesirable, the controller is programmed to check for a manual override from an end user of the communication device, and when the end user forces a scan, the controller enables communications with said wireless access point.

4. The NMS of claim 3, wherein the controller is programmed to transmit to the communication device a plurality of locations of a corresponding plurality of wireless access points for conserving energy in the communication device.

5. A computer-readable storage medium in a communication device, comprising computer instructions for conserving energy by scanning for a select one of a plurality of wireless access technologies only when the communication device is near a known location of a wireless access point, and comprising computer instructions for:

monitoring a location of the communication device;

detecting that the communication device is near the known location of the wireless access point;

scanning for the wireless access point in response to said detection;

locating the communication device by triangulation in a communication system;

detecting that a signal strength is undesirable;

checking for a manual override from an end user of the communication device; and

when the end user forces a scan, enabling communications with said wireless access point.

6. The storage medium of claim 5, comprising computer instructions for conserving energy while the communication device is out of a communication range of the wireless access point.

7. The storage medium of claim 5, comprising computer instructions for enabling communications with the wireless access point upon detecting a desired signal strength.