Techniques for power conservation in emergency broadcast message reception

Patent metadata

Field	Value
Publication number	US-9408052-B2
Application number	US-201314103272-A
Country	US
Kind code	B2
Filing date	Dec 11, 2013
Priority date	Dec 21, 2012
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

Techniques are described for power conservation in emergency broadcast message reception in a wireless communications system. In accordance with a method for conserving power, one or more segments of an emergency broadcast message in an access stratum are received. The emergency broadcast message is identified as a duplicate emergency broadcast message based at least in part on one or more identifiers of the received one or more segments. The receipt of additional segments of the emergency broadcast message is terminated.

First claim

What is claimed is:

1. A method for wireless communications, comprising:
receiving one or more segments of a first emergency broadcast message in an access stratum;
determining that the first emergency broadcast message is a duplicate emergency broadcast message based at least in part on a comparison of one or more identifiers of the received one or more segments associated with the first emergency broadcast message and a notification identifier associated with a second emergency broadcast message, the second emergency broadcast message being a previously received broadcast message;
terminating receipt of additional segments of the first emergency broadcast message based at least in part on the determination that the first emergency broadcast message is a duplicate emergency broadcast message; and
resuming reception of emergency broadcast messages following a time period that is based at least in part on an identified number of segments used to assemble the previously-received second emergency broadcast message.

2. The method of claim 1 , wherein resuming the reception of the emergency broadcast messages comprises:
resuming reception of a system information block (SIB) used to emergency broadcast segments of the emergency broadcast messages.

3. The method of claim 1 , wherein the identified number of segments used to assemble the second emergency broadcast message indicates a length of the first emergency broadcast message.

4. The method of claim 1 , wherein the identified number of segments used to assemble the second emergency broadcast message is determined based at least in part on retrieving, from a memory location, a number of segments used to assemble the second emergency broadcast message using the one or more identifiers of the received one or more segments.

5. The method of claim 1 , further comprising:
identifying a receipt of a portion of a third emergency broadcast message during the identified time period; and
remaining in a receive enabled state to receive the third emergency broadcast message when the third emergency broadcast message is rebroadcasted.

6. The method of claim 1 , wherein the terminating the receipt of additional segments of the first emergency broadcast message comprises:
terminating receipt of a system information block (SIB) used to emergency broadcast segments of the first emergency broadcast message.

7. The method of claim 1 , wherein the first emergency broadcast message comprises a commercial mobile alert system (CMAS) notification.

8. The method of claim 1 , wherein the first emergency broadcast message comprises an earthquake and tsunami warning system (ETWS) notification.

9. An apparatus for wireless communications, comprising:
a processor;
memory in electronic communication with the processor; and
instructions stored in the memory, the instructions being executable by the processor to:
receive one or more segments of a first emergency broadcast message in an access stratum;
determine that the first emergency broadcast message is a duplicate emergency broadcast message based at least in part on a comparison of one or more identifiers of the received one or more segments associated with the first emergency broadcast message and a notification identifier associated with a second emergency broadcast message, the second emergency broadcast message being a previously received broadcast message;
terminate receipt of additional segments of the first emergency broadcast message; and
resume reception of emergency broadcast messages following a time period that is based at least in part on an identified number of segments used to assemble the previously-received second emergency broadcast message.

10. The apparatus of claim 9 , wherein the instructions to resume reception of emergency broadcast messages are executable by the processor to:
resume reception of a system information block (SIB) used to emergency broadcast segments of the emergency broadcast messages.

11. The apparatus of claim 9 , wherein the identified number of segments used to assemble the second emergency broadcast message indicates a length of the first emergency broadcast message.

12. The apparatus of claim 9 , wherein the identified number of segments used to assemble the second emergency broadcast message is based at least in part on retrieving, from a memory location, a number of segments used to assemble the second emergency broadcast message using the one or more identifiers of the received one or more segments.

13. The apparatus of claim 9 , wherein the instructions are executable by the processor to:
identify a receipt of a portion of a third emergency broadcast message during the identified time period; and
remain in a receive enabled state to receive the third emergency broadcast message when the third emergency broadcast message is rebroadcasted.

14. The apparatus of claim 9 , wherein the instructions to terminate receipt of additional segments of the first emergency broadcast message are executable by the processor to:
terminate receipt of a system information block (SIB) used to emergency broadcast segments of the first emergency broadcast message.

15. The apparatus of claim 9 , wherein the first emergency broadcast message comprises a commercial mobile alert system (CMAS) notification.

16. An apparatus for wireless communications, comprising:
means for receiving one or more segments of a first emergency broadcast message in an access stratum;
means for determining that the first emergency broadcast message is a duplicate emergency broadcast message based at least in part on a comparison of one or more identifiers of the received one or more segments associated with the first emergency broadcast message and a notification identifier associated with a second emergency broadcast message, the second emergency broadcast message being a previously received broadcast message;
means for terminating receipt of additional segments of the first emergency broadcast message based at least in part on the determination that the first emergency broadcast message is a duplicate emergency broadcast message; and
means for resuming reception of emergency broadcast messages following a time period that is based at least in part on an identified number of segments used to assemble the previously-received second emergency broadcast message.

Assignees

• Qualcomm Inc

Inventors

• Drapkin Vitaly
• Janga Bhanu Kiran
• Ramachandran Shyamal
• Gupta Ajit

Classifications

• H04W52/028 Primary

  switching on or off only a part of the equipment circuit blocks · CPC title

• H04L12/1895

  for short real-time information, e.g. alarms, notifications, alerts, updates · CPC title

• H04L51/00

  User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail · CPC title

• H04L12/189

  in combination with wireless systems (selective distribution or broadcast in wireless communication networks H04W4/06) · CPC title

• H04M3/00

  Automatic or semi-automatic exchanges · CPC title