Emergency information in system information broadcast

• US 9,008,605 B2
• Filed: 06/17/2009
• Issued: 04/14/2015
• Est. Priority Date: 06/20/2008
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: Wang, Peter S., Zhang, Guodong, Somasundaram, Shankar
• Primary Examiner(s): Patel, Nimesh
• Application Number:
  US12/486,029
• Publication Number:
  US 20110059718A1
• Time in Patent Office: 2,127 Days
• Field of Search: 455/404.1, 455/404.2, 455/3.01, 455/466
• US Class Current: 455/404.1
• CPC Class Codes: H04H 20/59 for emergency or urgency
• CPC Class Codes: H04H 20/72 of terrestrial networks
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

A method and apparatus for providing an emergency signal to a wireless transmit receive unit (WTRU). The WTRU is configured to receive a system information message including an emergency message notification and emergency system information messages, wherein the system information messages are segmented and overlap non-emergency system information messages. The WTRU is further configured to process the emergency information messages.

Claims

1. A method of providing an emergency signal to a wireless transmit receive unit (WTRU), the method comprising:

receiving scheduling information, wherein the scheduling information is for receiving emergency system information messages in segmented and non-segmented earthquake and tsunami warning service (ETWS)-system information blocks (ETWS-SIBS), wherein the segmented ETWS-SIBS are segmented based on the size of the ETWS-SIB, wherein the segmented and non-segmented ETWS-SIBS and the non-emergency system SIBS are interleaved, and wherein the segmented and non-segmented ETWS-SIBS and the non-emergency system SIBS are not received simultaneously;

receiving the ETWS-SIBs using the scheduling information, and

processing the ETSW-SIBs to acquire the emergency system information messages.

2. The method as in claim 1 further comprising receiving emergency system information messages within periodically occurring time domain windows using dynamic scheduling.

3. The method as in claim 1 wherein the segmented ETWS-SIBs are distributed over an emergency system information transmit period.

4. The method as in claim 1 wherein a paging message is used to indicate a change in system information including the scheduling information.

5. A wireless transmit receive unit (WTRU) configured to receive an emergency signal, the WTRU comprising:

a receiver configured to receive scheduling information, wherein the scheduling information is for receiving emergency system information messages in segmented and non-segmented earthquake and tsunami warning service (ETWS) system information blocks (ETWS-SIBS), wherein the segmented ETWS-SIBS are segmented based on the size of the ETWS-SIB, wherein the segmented and non-segmented ETWS-SIBS and the non-emergency system SIBS are interleaved, and wherein the segmented and non-segmented ETWS-SIBS and the non-emergency system SIBS are not received simultaneously;

the receiver further configured to receive the ETWS-SIBS using the scheduling information, and

a processor configured to process the ETSW-SIBS to acquire the emergency system information messages.

6. The WTRU as in claim 5 wherein the receiver is further configured to receive emergency system information messages within periodically occurring time domain windows using dynamic scheduling.

7. The WTRU as in claim 5 wherein the ETWS-SIBs are distributed over an emergency system information transmit period.

8. The WTRU as in claim 5 wherein a paging message is used to indicate a change in system information including the scheduling information.

9. A base station (BS) configured to transmit an emergency signal, the BS comprising:

a transmitter configured to transmit scheduling information, wherein the scheduling information is for receiving emergency system information messages, at a wireless transmit/receive unit (WTRU), in segmented and non-segmented earthquake and tsunami warning service (ETWS)-system information blocks (ETWS-SIBs), wherein the segmented ETWS-SIBs are segmented based on the size of the ETWS-SIB and wherein the segmented and non-segmented ETWS-SIBs and non-emergency SIBs are interleaved; and

the transmitter is further configured to transmit the segmented and non-segmented ETWS-SIBs and non-emergency SIBs according to the scheduling information, wherein the segmented and non-segmented ETWS-SIBs and non-emergency SIBs are not transmitted simultaneously.

10. The BS as in claim 9 further comprising transmitting emergency system information messages within periodically occurring time domain windows using dynamic scheduling.

11. The BS as in claim 9 wherein the segmented ETWS-SIBs are distributed over an emergency system information transmit period.

12. The BS as in claim 9 wherein a paging message is used to indicate a change in system information including the scheduling information.