Low duty cycle network controller

• US 8,605,630 B2
• Filed: 09/12/2011
• Issued: 12/10/2013
• Est. Priority Date: 06/21/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Lee, Chong Uk, Holcman, Alejandro Raul, Stein, Jeremy M., Rezaiifar, Ramin, Aryan, Babak
• Primary Examiner(s): Nguyen, Brian D
• Application Number:
  US13/230,555
• Publication Number:
  US 20120002574A1
• Time in Patent Office: 820 Days
• Field of Search: 370/277, 370/311, 370/335, 370/342
• US Class Current: 370/277
• CPC Class Codes: H04B 7/24 for communication between two or more posts wireless communication networks H04W
• CPC Class Codes: H04J 3/06 Synchronising arrangements for television systems H04N5/04; bit-synchronisation H04L7/00
• CPC Class Codes: H04W 52/028 switching on or off only a part of the equipment circuit blocks
• CPC Class Codes: H04W 56/0015 one node acting as a reference for the others
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Operating at least one low duty cycle (LDC) controller to maintain synchronization between the LDC controller and a plurality of LDC terminals operating over a communication network using only overhead channels of the network and conforming to the protocol and timing of said network, wherein synchronization between the LDC controller and the plurality of LDC terminals is maintained separately from the protocol and timing of the communication network, and enables the LDC controller to schedule power down and wake up of the plurality of LDC terminals for durations longer than allowable under the protocol and timing of the communication network.

Claims

1. A Low Duty Cycle (LDC) terminal, comprising:

a receiver configured to receive information on a half-duplex forward link channel; and

a processor coupled to the receiver, the processor programmed to;

place the terminal in an idle mode to conform to a CDMA slotted mode protocol;

determine a wake-up time and a power down time based on the information received over the forward link channel during the idle mode; and

place the terminal in a hibernation mode based on the wake-up time and power down time.

2. The LDC terminal of claim 1 wherein the processor is programmed to place the terminal in the hibernation mode for a period of time that is longer than the CDMA slotted mode protocol.

3. The LDC terminal of claim 1 wherein determining the wake-up time includes determining an offset relative to the beginning of a period for entry into the idle mode, the offset determined based on the information received over the forward link channel.

4. The LDC terminal of claim 3 wherein the processor is programmed to determine the offset by a hashing process.

5. A non-transitory computer-readable medium having computer-executable instructions for performing a method comprising:

placing a Low Duty Cycle (LDC) terminal in an idle mode to conform to a CDMA slot mode protocol;

determining a terminal wake-up time and a terminal power down time based on information received over a half-duplex forward link channel during the idle mode; and

placing the terminal in a hibernation mode based on the terminal wake-up time and the terminal power down time.

6. The computer-readable medium of claim 5 comprising computer-executable instructions for placing the terminal in a hibernation mode for a period of time that is longer than the CDMA slotted mode protocol.

7. The computer-readable medium of claim 5 comprising computer-executable instructions for determining an offset relative to the beginning of a period for entry into the idle mode, the offset determined based on the information received over the forward link channel, and for determining a wake-up time based on the offset.

8. The computer-readable medium of claim 7 comprising computer-executable instructions for determining the offset by a hashing process.

9. A remotely-situated communications device, comprising:

means for receiving information on a half-duplex forward link channel;

means for placing the communications device in an idle mode to conform to a CDMA slotted mode protocol;

means for determining a wake-up time and a power down time based on the information received over the forward link channel during the idle mode; and

means for placing the communications device in a hibernation mode based on the wake-up time and power down time.

10. The communications device of claim 9 comprising means for placing the communications device in the hibernation mode for a period of time that is longer than the CDMA slotted mode protocol.

11. The communications device of claim 9 wherein the means for determining the wake-up time includes determining an offset relative to the beginning of a period for entry into the idle mode, the offset determined based on the information received over the forward link channel.

12. A method of controlling a terminal, comprising:

receiving information on a half-duplex forward link channel;

placing the terminal in an idle mode to conform to a CDMA slotted mode protocol;

determining a wake-up time and a power down time based on the information received over the forward link channel during the idle mode; and

placing the terminal in a hibernation mode based the wake-up time and power down time.

13. The method of claim 12 comprising placing the terminal in the hibernation mode for a period of time that is longer than the CDMA slotted mode protocol.

14. The method of claim 12 wherein determining the wake-up time includes determining an offset relative to the beginning of a period for entry into the idle mode, the offset determined based on the information received over the forward link channel.

15. The method of claim 14 comprising determining the offset by a hashing process.