REESTABLISHMENT PROCEDURE FOR AN EMERGENCY CALL

• US 20140378087A1
• Filed: 09/08/2014
• Published: 12/25/2014
• Est. Priority Date: 04/03/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Umatt, Bhupesh M., Amerga, Daniel, Tenny, Nathan E.
• Granted Patent: US 10,206,087 B2
• Time in Patent Office: Days
• US Class Current: 455/404.1
• CPC Class Codes: H04Q 2213/1307 Call setup
• CPC Class Codes: H04Q 2213/13098 Mobile subscriber
• CPC Class Codes: H04Q 2213/1337 Operator, emergency services
• CPC Class Codes: H04W 36/0033 with transfer of context information
• CPC Class Codes: H04W 36/16 Performing reselection for specific purposes
• 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 48/20 Selecting an access point
• CPC Class Codes: H04W 76/19 Connection re-establishment
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

Traditional rules that apply to cell selection are overridden to allow cell selection on an acceptable cell, in addition to cell selection on a suitable cell. Once a mobile device acquires service on an acceptable cell, mobile device can inform network of the emergency call in progress or initiation of an emergency call, which allows network to perform necessary actions to support the emergency call during establishment/reestablishment.

Claims

1. A method for selection by a serving base station of one or more neighboring cells to be prepared in case of radio link failure affecting a connection serving a mobile device in an emergency call, the method comprising:

including in a selection cells that may not admit the mobile device for non-emergency services.

2. The method of claim 1, wherein the including comprises including cells that are not considered as suitable cells by the mobile device.

3. A wireless communications apparatus, comprising:

a memory that retains instructions related to preparing cells in case of radio link failure that affects a connection serving a mobile device in an emergency call, wherein the preparing comprises including cells that may not admit the mobile device for non-emergency services; and

a processor, coupled to the memory, configured to execute the instructions retained in the memory.

4. The wireless communications apparatus of claim 3, wherein the instructions related to preparing prepares additional cells that are not considered suitable cells by the mobile device.

5. A wireless communications apparatus for selection by a serving base station of one or more neighboring cells to be prepared in case of radio link failure affecting a connection serving a mobile device in an emergency call, the apparatus comprising:

means for including in a selection cells that may not admit the mobile device for non-emergency services.

6. The wireless communications apparatus of claim 5, wherein the means for including further comprises means for including cells that are not considered as suitable cells by the mobile device.

7. A computer program product for selection by a serving base station of one or more neighboring cells to be prepared in case of radio link failure affecting a connection serving a mobile device in an emergency call, comprising:

a computer-readable medium comprising;

a first set of codes for including in a selection cells that may not admit the mobile device for non-emergency services.

8. The computer program product of claim 7, wherein the computer-readable medium further comprises a second set of codes for including cells that are not considered as suitable cells by the mobile device.