Method for aperiodic mobile assisted sleep mode

• US 20070183355A1
• Filed: 02/09/2006
• Published: 08/09/2007
• Est. Priority Date: 02/09/2006
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola Mobility, Inc. (Lenovo Group Ltd.)
• Inventors: Nory, Ravikiran, Kuchibhotla, Ravi, Love, Robert, Stewart, Kenneth, Bachu, Raja
• Granted Patent: US 7,844,265 B2
• Time in Patent Office: Days
• US Class Current: 370/318
• CPC Class Codes: H04W 52/0238 where the received signal is an unwanted signal, e.g. interference or idle signal
• CPC Class Codes: H04W 52/0245 according to signal strength
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Disclosed is a method for mobile assisted sleep mode to reduce current drain in packet based mobile systems. The method comprising the step of receiving (102) from a network a channel condition threshold. Then, monitoring (104) a channel condition while in sleep mode. Then exiting (110) sleep mode in response to the determination (108) that the monitored channel condition is greater than the channel condition threshold.

Claims

1. A method for aperiodic mobile assisted sleep mode comprising:

receiving from a network a channel condition threshold;

monitoring a channel condition while in a sleep mode; and

exiting the sleep mode in response to a determination that the monitored channel condition is greater than the channel condition threshold.

2. The method of claim 1, wherein receiving comprises receiving a channel condition threshold limits

3. The method of claim 2, receiving an upper channel condition threshold limit and a lower channel condition threshold limit.

4. The method of claim 2, adjusting the channel condition threshold within the threshold limits to achieve a mean time between wake ups.

5. The method of claim 1, sending a message to the network indicating that the mobile is ready for data exchange.

6. The method of claim 5, receiving data in response to the message

7. The method of claim 5, receiving a pending data indication from the network.

8. The method of claim 5, receiving message indicating when data will be transmitted.

9. The method of claim 8, entering sleep mode while for the data to be transmitted.

10. The method of claim 1, exiting the sleep mode in response to a determination that Y frames have passed since a last reception of information.

11. The method of claim 1, exiting sleep mode in response to determining that Y frames have passed since a last reception of information;

and

determining that the monitored channel condition is less than the channel condition threshold.

12. The method of claim 11, receiving a timer value for the first timer from the network;

and

starting the timer in response to the mobile entering the sleep mode.

13. The method of claim 1, wherein the sleep mode is a paging mode.

14. A method for mobile assisted sleep mode comprising:

determining a channel condition of a communication channel while the mobile station is in a sleep mode;

setting a sleep cycle to a first sleep cycle value when the determined channel condition is a first channel condition; and

setting a sleep cycle to a second sleep cycle value when the determined channel condition value is a second channel condition.

15. The method of claim 14, receiving the first channel condition threshold and the second channel condition threshold from a network.

16. The method of claim 14, sending the first message including an awake indication and a first channel condition report indicating a first channel condition.

17. The method of claim 14, changing from the first sleep cycle to the second sleep cycle in response to determining that the determined channel condition has changed from the first channel condition to the second channel condition.

18. The method of claim, 14 receiving a first DRX cycle indicator and a second DRX cycle indicator from the network.

19. A method for reducing current drain in a wireless communication device comprising:

receiving from the network a channel condition threshold;

receiving an indication of pending data indication;

entering sleep mode and monitoring a channel condition;

determining that the channel condition is below the channel condition threshold;

waiting to exit sleep mode and send an awake indicator to the network until the channel condition is greater than the channel condition threshold.