REDUCING RECEIVER POWER DISSIPATION

• US 20100112974A1
• Filed: 11/05/2008
• Published: 05/06/2010
• Est. Priority Date: 11/05/2008
• Status: Active Grant

• Current Assignee: ViaSat Incorporated
• Original Assignee: ViaSat Incorporated
• Inventors: Meyer, David, Sahai, Aakash
• Granted Patent: US 8,411,798 B2
• Time in Patent Office: Days
• US Class Current: 455/334
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Disclosed is a method of controlling a receiver. A group identifier or modulation and coding scheme is sent in a physical layer header. This group identifier or modulation and coding scheme, or both, determine whether the corresponding physical layer frame should be fully demodulated and decoded. If it is not necessary to fully demodulate and decode the physical layer frame, the receiver may disable its demodulator, decoder, or both. This results in a power savings. A hub device sends the group identifier or modulation and coding scheme in the physical layer header. This allows receivers that are not addressed by the group identifier, or modulation and coding scheme, to disable at least a portion of their circuitry. Disabling at least a portion of circuitry saves power consumption and dissipation. The hub device may also send control messages to tell the receiver which group identifiers, or modulation and coding schemes, they should respond to.

Claims

1. A method of controlling a receiver, comprising:

receiving a first frame header comprising a first indicator and a first group identifier, said first indicator corresponding to a first modulation and coding scheme;

based on said first group identifier, demodulating and decoding a first frame according to said first modulation and coding scheme;

receiving a second frame header comprising a second group identifier; and

,

based on said second group identifier, preventing at least a portion of a second frame from being demodulated and decoded.

2. The method of claim 1, wherein said first group identifier is a member of a set of group identifiers associated with said receiver.

3. The method of claim 1, further comprising:

receiving a message including a set of group identifiers that determines which group identifiers will result in demodulating and decoding said first frame.

4. The method of claim 1, wherein said first group identifier corresponding to a control group identifier results in demodulating and decoding said first frame.

5. The method of claim 1, wherein said demodulating and decoding said first frame is further based on said first indicator.

6. The method of claim 1, wherein said preventing at least a portion of a second frame from being demodulated a decoded is further based on a second indicator corresponding to a second modulation and coding scheme received as part of said second frame header.

7. A method of controlling a receiver, comprising:

receiving a first frame header comprising a first indicator, said first indicator corresponding to a first modulation and coding scheme;

based on said first indicator, demodulating and decoding a first frame according to said first modulation and coding scheme;

receiving a second frame header comprising a second indicator, said second indicator corresponding to a second modulation and coding scheme; and

,

based on said second indicator, deactivating at least a portion of said receiver such that at least a portion of a second frame is not demodulated a decoded.

8. The method of claim 7, further comprising:

receiving an indicator of a set of modulation and coding schemes that determines which modulation and coding schemes will result in demodulating and decoding said first frame.

9. The method of claim 7, wherein said first indicator corresponding to a modulation and coding scheme of a control group results in demodulating and decoding said first frame.

10. The method of claim 7, wherein the first frame header further comprises a first group identifier and the second frame header further comprises a second group identifier.

11. The method of claim 10, wherein said deactivating is further based on said second group identifier.

12. The method of claim 10, wherein said first group identifier is a member of a set of group identifiers associated with said receiver.

13. The method of claim 10, further comprising:

receiving a message including a set of group identifiers that determines which group identifiers will result in demodulating and decoding said first frame.

14. A method of controlling a receiver, comprising:

sending a first frame header comprising a first indicator and a first group identifier, said first indicator corresponding to a first modulation and coding scheme; and

,

sending a second frame header comprising a second group identifier.

15. The method of claim 14, wherein said first group identifier is a member of a set of group identifiers associated with said receiver.

16. The method of claim 14, further comprising:

sending an indicator of a set of group identifiers that determines which group identifiers will result in demodulating and decoding a first frame, said first frame being associated with said first frame header.

17. The method of claim 14, wherein said first group identifier corresponding to a control group identifier results in demodulating and decoding a first frame, said first frame being associated with said first frame header.

18. The method of claim 14, wherein said first group identifier being associated with said receiver results in demodulating and decoding a first frame, said first frame being associated with said first frame header.

19. The method of claim 14, wherein said first group identifier and said first modulation and coding scheme being associated with said receiver results in demodulating and decoding a first frame, said first frame being associated with said first frame header.

20. The method of claim 14, wherein said first modulation and coding scheme corresponding to a control group results in demodulating and decoding said first frame.