VOICE SERVICE IN EVOLVED PACKET SYSTEM

• US 20110002327A1
• Filed: 06/03/2010
• Published: 01/06/2011
• Est. Priority Date: 06/03/2009
• Status: Abandoned Application

• Current Assignee: Blackberry Limited
• Original Assignee: Blackberry Limited
• Inventors: Faccin, Stefano, Dwyer, Johanna Lisa, Burbidge, Richard Charles, Chin, Chen Ho
• Application Number:
  US12/793,668
• Publication Number:
  US 20110002327A1
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

Methods and apparatus to manage voice service in evolved packet systems are disclosed. An example method in a user equipment (UE) with a first indicator related to voice services in an Evolved Packet System (EPS) comprises receiving a Non Access Stratum (NAS) protocol response message with a second indicator and responsive to at least one of the first indicator or the second indicator, sending a notification that voice services are not currently able to be provided.

Claims

1. A method in a user equipment (UE) with a first indicator related to voice services in an Evolved Packet System (EPS), the method comprising:

receiving a Non Access Stratum (NAS) protocol response message with a second indicator; and

responsive to at least one of the first indicator or the second indicator, sending a notification that voice services are not currently able to be provided.

2. The method of claim 1, wherein the NAS protocol response message is a NAS registration response message.

3. The method of claim 1, wherein one or both of the first indicator or the second indicator are Voice Service Indicators (VSIs).

4. The method of claim 3, wherein the VSI is set to at least one of:

IMS Voice over PS session supported indication;

IMS Voice over PS session not supported indication;

Voice Centric;

Data Centric;

CS Voice Only;

IMS PS Voice Only;

CS Voice Preferred, IMS Voice Secondary;

or

IMS Voice Preferred, CS Voice Secondary.

5. The method of claim 3, wherein the VSIs are one or more of:

Voice over IP Multimedia Subsystem (IMS VoPS) indicators;

UE usage settings; and

UE voice settings.

6. The method of claim 1, wherein the second indicator is at least one of a cause value or a failure indication.

7. The method of claim 6, wherein at least one of the cause value or the failure indication is set to:

Failure to register UE for circuit switched (CS) or packet switched (PS) services;

or

CS domain not available.

8. The method of claim 1, wherein sending a notification is performed by the UE and said notification is sent to at least one of a user or an upper layer.

9. The method of claim 1, wherein NAS registration response message is at least one of:

Response to the EPS attach procedure;

Tracking Area Update response;

Routing Area Update response;

ATTACH accept message;

SERVICE REJECT message;

ROUTING AREA UPDATE ACCEPT message;

or

TRACKING AREA UPDATE ACCEPT message.

10. The method of claim 1, wherein sending the notification is responsive to both the first indicator and the second indicator.

11. A method in a user equipment (UE) with a first indicator related to voice services in an Evolved Packet System (EPS), the method comprising:

receiving a Non Access Stratum (NAS) protocol response message with a second indicator; and

responsive to at least one of the first indicator or the second indicator, sending a notification that voice services are not currently able to be provided, wherein the notification that the voice services are not currently able to be provided comprises a notification that CS domain is not available.

12. The method of claim 11, wherein the NAS protocol response message is a NAS registration response message.

13. The method of claim 11, wherein one or both of the first indicator or the second indicator are Voice Service Indicators (VSIs).

14. The method of claim 13, wherein the VSI is set to at least one of:

IMS Voice over PS session supported indication;

IMS Voice over PS session not supported indication;

Voice Centric;

Data Centric;

CS Voice Only;

IMS PS Voice Only;

CS Voice Preferred, IMS Voice Secondary;

or

IMS Voice Preferred, CS Voice Secondary.

15. The method of claim 13, wherein the VSIs are one or more of:

Voice over IP Multimedia Subsystem (IMS VoPS) indicators;

UE usage settings; and

UE voice settings.

16. The method of claim 11, wherein the second indicator is at least one of a cause value or a failure indication.

17-20. -20. (canceled)

21. A method in a user equipment (UE) with a first indicator related to voice services in an Evolved Packet System (EPS), the method comprising:

receiving a Non Access Stratum (NAS) protocol response message with a second indicator; and

responsive to at least one of the first indicator or the second indicator, sending a notification that voice services are not currently able to be provided.

22. The method of claim 21, wherein the NAS protocol response message is a NAS registration response message.

23. The method of claim 21, wherein one or both of the first indicator or the second indicator are Voice Service Indicators (VSIs).

24-30. -30. (canceled)