Method and system for optimizing power resources in wireless devices

• US 8,144,637 B2
• Filed: 03/16/2005
• Issued: 03/27/2012
• Est. Priority Date: 05/01/2002
• Status: Active Grant

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Goldberg, Steven Jeffrey
• Primary Examiner(s): Gelin, Jean
• Application Number:
  US11/081,294
• Publication Number:
  US 20050157667A1
• Time in Patent Office: 2,568 Days
• Field of Search: 455/459, 455/466, 455/502, 455/515, 455/458, 455/403, 455/550.1, 455/68, 455/522, 455/571, 455/572, 455/574, 370/225, 370/242, 370/389, 370/318, 370/311, 370/312, 370/324, 370/349, 370/350
• US Class Current: 370/311
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 68/025 Indirect paging
• CPC Class Codes: H04W 72/0473 the resource being transmission power
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method and system is disclosed for a device to quickly determine if data is being sent to it. If no data is being sent to the device, the device may return to a sleep mode so as to conserve energy. The present invention includes organizing and transmitting, one at a time, all device destination identifiers. If a message listing search indicates that no message is being sent for a device, the device can continue with any other activity that needs servicing, or if no other activity is pending, it may shut down to conserve power until the next wake up period arrives. If the search returns a positive indication, the count value when the identifier is found can be used to determine the location of the pointer to the message.

Claims

1. A method for use in a wireless device, the method comprising:

synchronizing with a wireless network such that the wireless device wakes up from a sleep mode during a time interval to receive a message listing;

receiving the message listing, the message listing comprising a plurality of destination identifiers and a plurality of message pointers, wherein each one of the plurality of message pointers is associated with a destination identifier from the plurality of destination identifiers, wherein each of the plurality of message pointers indicates when a message will be available for reception, and wherein each of the plurality of message pointers points to a different message; and

in response to a determination that one of the plurality of destination identifiers corresponds to the wireless device, receiving a message pointed to by a message pointer associated with the destination identifier that corresponds to the wireless device.

2. The method of claim 1 wherein the message listing further comprises a count of destination identifiers in the message listing.

3. The method of claim 1 wherein the message listing further comprises a list terminator.

4. The method of claim 1 further comprising:

returning to sleep mode in response to a determination that none of the plurality of destination identifiers correspond to the wireless device.

5. The method of claim 1 further comprising:

returning to sleep mode until a next time interval.

6. A wireless device wireless device comprising:

a processor configured to analyze a message listing, wherein the message listing comprises a plurality of destination identifiers and a plurality of message pointers, wherein each one of the plurality of message pointers is associated with a destination identifier from the plurality of destination identifiers, wherein each of the plurality of message pointers indicates when a message will be available for reception, and wherein each of the plurality of message pointers points to a different message; and

a receiver configured, in response to a determination that one of the plurality of destination identifiers corresponds to the wireless device, to receive a message pointed to by a message pointer associated with the destination identifier that corresponds to the wireless device.

7. The wireless device of claim 6, wherein the processor is further configured to return the wireless device to sleep mode until a next time interval.

8. A method for use in a wireless device, the method comprising:

receiving a message listing via a wireless interface, the message listing comprising a plurality of destination identifiers and a plurality of message pointers, wherein each message pointer is associated with a destination identifier from the plurality of destination identifiers, wherein each message pointer indicates when a message will be available for reception, and wherein each of the plurality of message pointers points to a different message; and

in response to a determination that one of the destination identifiers corresponds to the wireless device, receiving a message pointed to by the message pointer associated with the destination identifier that corresponds to the wireless device.

9. The method of claim 8 wherein each message pointer indicates a timeslot during which a message will be available for reception.

10. The method of claim 8 wherein the message listing further comprises a count of destination identifiers in the message listing.

11. The method of claim 8 wherein the message listing further comprises a list terminator.