Mobile communication device with low power receiver for signal detection

• US 8,055,313 B2
• Filed: 09/15/2009
• Issued: 11/08/2011
• Est. Priority Date: 10/06/2005
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Behzad, Arya, Rofougaran, Ahmadreza
• Primary Examiner(s): Dao; Minh D
• Application Number:
  US12/559,617
• Publication Number:
  US 20100003935A1
• Time in Patent Office: 784 Days
• Field of Search: 455/574, 455/572, 455/550.1, 455/552.1, 455/553.1, 455/343.1, 340/7.32, 340/7.34
• US Class Current: 455/574
• CPC Class Codes: H04W 52/0225 using monitoring of external events, e.g. the presence of a signal
• CPC Class Codes: H04W 52/0261 managing power supply demand, e.g. depending on battery level
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A mobile communication device with a low power receiver for signal detection and a method for utilizing a low power receiver for signal detection in a mobile communication device. Various aspects of the present invention comprise a first receiver module adapted to operate in a sleep mode. The first receiver module may also be adapted to receive a communication signal utilizing a first amount of power, where the communication signal is characterized by a first set of signal characteristics. A second receiver module may be adapted to receive a communication signal characterized by the first set of signal characteristics. The second receiver module may be adapted to receive a communication signal utilizing a second amount of power that is less than the first amount of power. A communication signal received by the second receiver module may be analyzed to determine a mode in which to operate the first receiver module.

Claims

1. A mobile communication device, comprising:

a first receiver module operable to process, at a first level of processing quality, a communication signal corresponding to a first communication protocol while consuming a first amount of power; and

a second receiver module operable to process, at a second level of processing quality less than the first level of processing quality, a communication signal corresponding to the first communication protocol while consuming a second amount of power, the second amount of power being less than the first amount of power.

2. The mobile communication device of claim 1, comprising one or more modules operable to analyze information, said information communicated by the communication signal and obtained by the second receiver module processing the communication signal, to determine whether to utilize the first receiver module.

3. The mobile communication device of claim 2, wherein the information comprises information identifying a source of the communication signal.

4. The mobile communication device of claim 2, wherein the information comprises information identifying a destination of the communication signal.

5. The mobile communication device of claim 2, wherein the information comprises information indicating that a message is awaiting delivery to the mobile communication device.

6. The mobile communication device of claim 2, wherein the information comprises information indicating initiation of a peer-to-peer communication with the mobile communication device.

7. The mobile communication device of claim 1, wherein:

the first receiver module operates to process a communication signal utilizing a first component constructed using a first semiconductor technology; and

the second receiver module operates to process a communication signal utilizing a second component, generally analogous to the first component, the second component constructed using a second semiconductor technology different from the first semiconductor technology.

8. The mobile communication device of claim 1, wherein:

the first receiver module operates to utilize a frequency synthesizer that generates a signal characterized by a first quality level; and

the second receiver module operates to utilize a frequency synthesizer that generates a signal characterized by a second quality level that is less than the first quality level.

9. The mobile communication device of claim 1, wherein:

the first receiver module operates to utilize an analog-to-digital converter characterized by a first quality level; and

the second receiver module operates to utilize an analog-to-digital converter characterized by a second quality level that is less than the first quality level.

10. The mobile communication device of claim 1, wherein:

the first receiver module operates to utilize a filter characterized by a first quality level; and

the second receiver module operates to utilize a filter characterized by a second quality level that is less than the first quality level.

11. The mobile communication device of claim 1, wherein:

the first receiver module operates to utilize a decoder characterized by a first quality level; and

the second receiver module operates to utilize a decoder characterized by a second quality level that is less than the first quality level.

12. The mobile communication device of claim 1, wherein the second receiver module is operable in a plurality of modes comprising:

a first mode characterized by sleep mode characteristics; and

a second mode, in which the second receiver module processes a communication signal.

13. The mobile communication device of claim 1, wherein the first receiver module and the second receiver module share at least a portion of their respective components.

14. In a mobile communication device, a method for operating the mobile communication device in an energy-efficient manner, the method comprising:

operating a first receiver module to process, at a first level of processing quality, a communication signal corresponding to a first communication protocol while consuming a first amount of power; and

operating a second receiver module to process, at a second level of processing quality less than the first level of processing quality, a communication signal corresponding to the first communication protocol while consuming a second amount of power, the second amount of power being less than the first amount of power.

15. The method of claim 14, comprising analyzing information, said information communicated by the communication signal and obtained by the second receiver module processing the communication signal, to determine whether to utilize the first receiver module.

16. The method of claim 15, wherein the information comprises information identifying a source of the communication signal.

17. The method of claim 15, wherein the information comprises information identifying a destination of the communication signal.

18. The method of claim 15, wherein the information comprises information indicating that a message is awaiting delivery to the mobile communication device.

19. The method of claim 15, wherein the information comprises information indicating initiation of a peer-to-peer communication with the mobile communication device.

20. The method of claim 14, wherein:

operating the first receiver module to process a communication signal comprises utilizing a first component constructed using a first semiconductor technology; and

operating the second receiver module to process a communication signal comprises utilizing a second component, generally analogous to the first component, the second component constructed using a second semiconductor technology different from the first semiconductor technology.

21. The method of claim 14, wherein:

operating the first receiver module to process a communication signal comprises utilizing a frequency synthesizer that generates a signal characterized by a first quality level; and

operating the second receiver module to process a communication signal comprises utilizing a frequency synthesizer that generates a signal characterized by a second quality level that is less than the first quality level.

22. The method of claim 14, wherein:

operating the first receiver module to process a communication signal comprises utilizing an analog-to-digital converter characterized by a first quality level; and

operating the second receiver module to process a communication signal comprises utilizing an analog-to-digital converter characterized by a second quality level that is less than the first quality level.

23. The method of claim 14, wherein:

operating the first receiver module to process a communication signal comprises utilizing a filter characterized by a first quality level; and

operating the second receiver module to process a communication signal comprises utilizing a filter characterized by a second quality level that is less than the first quality level.

24. The method of claim 14, wherein:

operating the first receiver module to process a communication signal comprises utilizing a decoder characterized by a first quality level; and

operating the second receiver module to process a communication signal comprises utilizing a decoder characterized by a second quality level that is less than the first quality level.

25. The method of claim 14, comprising operating the second receiver module in a plurality of modes comprising:

a first mode characterized by sleep mode characteristics; and

a second mode, in which the second module processes a communication signal.

26. The method of claim 14, wherein:

operating the first receiver module to process a communication signal comprises utilizing a first set of components; and

operating the second receiver module to process a communication signal comprises utilizing a second set of components, at least a portion of which overlaps with the first set of components.