SYNCHRONIZATION OF MULTI-SYSTEM WAKEUP

• US 20080025279A1
• Filed: 07/31/2006
• Published: 01/31/2008
• Est. Priority Date: 07/31/2006
• Status: Abandoned Application

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Borras, Jaime A., Gautier, Roberto, Young, Jason T.
• Application Number:
  US11/461,096
• Publication Number:
  US 20080025279A1
• Time in Patent Office: Days
• US Class Current: 370/341
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method (200) for synchronizing wakeup of a second communication device (115) with wakeup of a first communication device (110). The method can include, on the first communication device, receiving a first message (135) from a communications network. The first message can indicate a first sleep/wake interval to be implemented on the first communication device. The method also can include communicating a second message (150) from the first communication device to the second communication device. The second message can indicate a second sleep/wake interval to be implemented on the second communication device. The second sleep/wake interval can be synchronized with the first sleep/wake interval. In one arrangement, the second sleep/wake interval can indicate to the second communication device to wakeup from sleep mode immediately after the first communication device has woken up from sleep mode.

Claims

1. A method for synchronizing wakeup of a second communication device with wakeup of a first communication device, comprising:

on the first communication device, receiving a first message from a communications network, the first message indicating a first sleep/wake interval to be implemented on the first communication device; and

from the first communication device, communicating a second message to the second communication device, the second message indicating a second sleep/wake interval to be implemented on the second communication device.

2. The method of claim 1, wherein the second sleep/wake interval is synchronized with the first sleep/wake interval.

3. The method of claim 2, wherein the second sleep/wake interval indicates to the second communication device to wakeup from sleep mode immediately after the first communication device has woken up from sleep mode.

4. The method of claim 1, further comprising:

on the first communication device, receiving a sleep/wake interval confirmation from the second communication device.

5. The method of claim 1, further comprising:

communicating a network registration request from the first communication device to the communications network.

6. The method of claim 1, further comprising:

on the first communication device, entering sleep mode; and

waking up from sleep mode in accordance with the first sleep/wake interval.

7. The method of claim 6, further comprising:

after waking up from sleep mode, receiving a third message from the communications network, the third message indicating a third sleep/wake interval to be implemented on the first communication device; and

from the first communication device, communicating a fourth message to the second communication device, the fourth message indicating a fourth sleep/wake interval to be implemented on the second communication device.

8. The method of claim 7, wherein the fourth sleep/wake interval is synchronized with the third sleep/wake interval.

9. A communication device, comprising:

a first communications adapter that receives a first message from a communications network, the first message indicating a first sleep/wake interval to be implemented on the communication device; and

a second communications adapter that communicates a second message to a second communication device, the second message indicating a second sleep/wake interval to be implemented on the second communication device.

10. The communication device of claim 9, wherein the second sleep/wake interval is synchronized with the first sleep/wake interval.

11. The communication device of claim 10, wherein the second sleep/wake interval indicates to the second communication device to wakeup from sleep mode immediately after the communication device has woken up from sleep mode.

12. The communication device of claim 9, wherein the second communications adapter further receives a sleep/wake interval confirmation from the second communication device.

13. The communication device of claim 9 wherein the first communications adapter further communicates a network registration request to the communications network.

14. The communication device of claim 9, further comprising a controller which enters the communication device into sleep mode, and wakes up the communication device from sleep mode in accordance with the first sleep/wake interval.

15. The communication device of claim 14, wherein:

after waking up from sleep mode, the first communications adapter receives a third message from the communications network, the third message indicating a third sleep/wake interval to be implemented on the communication device; and

the second communications adapter communicates a fourth message to the second communication device, the fourth message indicating a fourth sleep/wake interval to be implemented on the second communication device.

16. The communication device of claim 15, wherein the fourth sleep/wake interval is synchronized with the third sleep/wake interval.

17. A communication device comprising a communications adapter that receives a first message from a second communication device indicating a first sleep/wake interval to be implemented on the communications device.

18. The communication device of claim 17, wherein the first sleep/wake interval is synchronized with a second sleep/wake interval implemented on the second communication device.

19. The communication device of claim 18, wherein the first sleep/wake interval indicates to the communication device to wakeup from sleep mode immediately after the second communication device has woken up from sleep mode.

20. The communication device of claim 17, wherein the communications adapter further communicates a sleep/wake interval confirmation to the communication device.