Reducing power consumption of wireless devices

• US 8,571,600 B2
• Filed: 02/26/2010
• Issued: 10/29/2013
• Est. Priority Date: 02/26/2010
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Sarkar, Shantanu, Cheung, Roger Chi-yee, Katz, Morris J.
• Primary Examiner(s): Ly, Nghi H
• Application Number:
  US12/713,562
• Publication Number:
  US 20110212746A1
• Time in Patent Office: 1,341 Days
• Field of Search: 455/552.1, 455/434, 455/435.2, 455/3.04, 455/464, 455/150.1, 455/188, 455/1, 455/188.1
• US Class Current: 455/552.1
• CPC Class Codes: H04W 52/0274 by switching on or off the equipment or parts thereof
• 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

Described in example embodiments herein are techniques that combine at least two network (communication) technologies (such as protocols, signaling methods, etc.) and limit when a wireless device employs one of the technologies. In an example embodiment, a passive technology, such as a Radio Frequency Identification (RFID) technology, can be employed to determine whether a certain network technology is available.

Claims

1. An apparatus, comprising:

a first wireless transceiver employing a first communication technology;

a second wireless transceiver employing a second communication technology;

control logic coupled with the first transceiver and second transceiver, the control logic is operable to determine whether the first wireless transceiver operates in an operating state or in a power save state;

wherein while the first transceiver is in the operating state, the control logic is responsive to a predetermined signal received via the first transceiver to establish communication with a wireless network employing the second communication technology via the second wireless transceiver;

wherein while the first transceiver is in the operating state, the control logic is operative to determine data representative of a position of the apparatus relative to the wireless network employing the second communication technology, and to transmit the data via the first wireless transceiver; and

wherein the control logic is further operable to switch the first wireless transceiver into the power save state while the second wireless transceiver is communicating with the wireless network.

2. The apparatus of claim 1, further comprising a passive wireless signal reflecting circuit.

3. The apparatus of claim 1, further comprising a radio frequency identification tag.

4. The apparatus of claim 1, wherein the control logic is further operable to switch the second transceiver to the power save state while the second wireless transceiver is not communicating with the wireless network.

5. The apparatus of claim 1, wherein the control logic automatically switches the second wireless transceiver to the operating state responsive to receiving the predetermined signal.

6. The apparatus of claim 1, wherein the control logic is operable to output a message on a user interface indicating that communications employing the second communication technology are available;

and

wherein the control logic is operable to switch on the second wireless transceiver responsive to receiving an input via the user interface to establish communications employing the second communication technology.

7. The apparatus of claim 1, wherein power consumption of the first wireless transceiver while the first wireless transceiver is in the operating state is greater than power consumption of the second wireless transceiver.

8. The apparatus of claim 1, wherein the predetermined signal is a short message system (SMS) compatible message.

9. The apparatus of claim 1, further comprising a wireless signal reflecting circuit operable for generating a reflected circuit upon detecting a predetermined signal, wherein the reflected signal comprises data representative of an identifier.

10. The apparatus of claim 9, wherein the data representative of an identifier is a telephone number.

11. The apparatus of claim 1, wherein the control logic is responsive to a second predetermined signal received via one of a group consisting of the first wireless transceiver, second wireless transceiver, and the first wireless transceiver and second wireless transceiver to switch the second wireless transceiver from the operating state to a power save state.

12. An apparatus, comprising:

a first wireless transceiver employing a first communication technology;

a second wireless transceiver employing a second communication technology;

a wireless signal detector circuit operable to receive a wireless signal indicating that communications employing the second communication technology are available;

control logic coupled with the first transceiver, second transceiver, and wireless signal detector, the control logic is operable to determine whether the first wireless transceiver operates in an operating state or in a power save state;

wherein the control logic is responsive to the wireless signal detector receiving a predetermined signal indicating that communications employing the communication technology is available to establish communications with an associated wireless network via the second wireless transceiver and to discontinue communications using the first wireless transceiver; and

,

wherein the control logic is operative to determine data representative of a position of the apparatus relative to the associated wireless network and to transmit the data via the first wireless transceiver.

13. The apparatus set forth in claim 12, wherein the sensor is a passive sensor.

14. The apparatus set forth in claim 12, wherein the sensor is a radio frequency identification tag sensor.

15. The apparatus set forth in claim 12, wherein the predetermined signal comprises data identifying a source of the predetermined signal.

16. The apparatus set forth in claim 15, wherein the data identifying a source of the predetermined signal is a Media Access Control address of the source.

17. The apparatus set forth in claim 12, wherein the first wireless transceiver is transitioned to a power save state while the second wireless transceiver is communicating using the second communication technology.