System, apparatus, and method to enable domain selection in a multimode device

Patent metadata

Field	Value
Publication number	US-9699718-B2
Application number	US-201113084400-A
Country	US
Kind code	B2
Filing date	Apr 11, 2011
Priority date	Apr 12, 2010
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

Certain aspects of the present disclosure propose a method for domain selection in a multimode UE. The domain selection method may be used to select domains for short message service (SMS) and/or voice service when the UE has camped on a packet switched (PS) network such as LTE. The proposed domain selection method may take into account UE capabilities, home operator preferences, visited operator preferences, visited network capabilities, and user settings.

First claim

What is claimed is:

1. A method for wireless communications, comprising:
determining a multi-mode device that has camped on a packet switched radio access technology (RAT) network is capable of supporting a voice service;
determining an attach type from a plurality of attach types based on first parameters of a home network and voice service capability;
selecting a first domain from a first plurality of domains for the voice service over the packet switched RAT network utilizing the attach type and one or more second parameters, wherein the first plurality of domains comprise single carrier-circuit switched fall back (1xCSFB) domain; and
if the multi-mode device is capable of supporting short message service (SMS), selecting, from a second plurality of domains, a second domain for SMS over the packet switched RAT network utilizing the one or more second parameters and registration information about the selected first domain.

2. The method of claim 1 , wherein the one or more second parameters comprise home operator preferences, visited operator preferences, visited operator capabilities, and user settings.

3. The method of claim 1 , further comprising:
receiving a system information block (SIB) message; and
selecting the first or the second domain utilizing information included in the SIB message.

4. The method of claim 1 , further comprising:
determining priorities of the first and the second plurality of domains; and
selecting the first and the second domain based on the determined priorities.

5. The method of claim 1 , further comprising:
disabling the packet switched RAT network temporarily if the multi-mode device is unable to select at least one of the first or the second domains; and
selecting another RAT that supports voice service or SMS.

6. The method of claim 5 , further comprising:
initializing a timer with a predetermined value while disabling the packet switched RAT network; and
trying to establish a connection with the disabled packet switched RAT network after the timer expires.

7. The method of claim 1 , further comprising:
re-selecting the first domain if a higher priority domain becomes available.

8. The method of claim 1 , wherein the plurality of attach types comprise circuit switched (CS)-only voice service, CS-preferred voice service, packet switched (PS)-only voice service, and PS-preferred voice service.

9. The method of claim 1 , wherein selecting the second domain comprises:
selecting a second attach type from a second plurality of attach types comprising packet switched (PS) preferred, and PS not allowed.

10. The method of claim 1 , wherein the packet switched RAT network comprises long term evolution (LTE).

11. The method of claim 1 , further comprising:
receiving a system information block (SIB) message; and
determining if the packet switched RAT network is a 3rd generation partnership project (3GPP) long term evolution (LTE) or a 3GPP2 LTE network based on the received SIB.

12. The method of claim 1 , further comprising:
registering to at least one of the first or the second domains.

13. The method of claim 12 , further comprising:
selecting a third domain if the multi-mode device is unable to register to the first domain.

14. The method of claim 1 , wherein the 1xCSFB domain has a lower priority than a CSFB domain that is in compliance with a third generation partnership project (3GPP).

15. A method for wireless communications, comprising:
determining, by a user device, an attach type based on one or more first parameters of a home operator and capabilities of the user device;
selecting, by the user device and from a plurality of domains, a domain for short message service (SMS) over a packet switched radio access technology (RAT) network based, at least in part, on registration information of a selected first domain and one or more second parameters, wherein the one or more second parameters comprise one or more of home operator preferences, visited operator preferences, visited operator capabilities, or user settings, wherein the plurality of domains comprise SMS over S102 interface, and wherein the one or more second parameters comprise home operator preferences and at least one of visited operator preferences or visited operator capabilities.

16. The method of claim 15 , further comprising:
performing registration procedures according to the selected domain; and
selecting another domain for SMS if the device is unable to successfully register to the selected domain.

17. The method of claim 15 , further comprising:
disabling the packet switched RAT network if the device is unable to successfully register to the selected domain.

18. The method of claim 15 , wherein the packet switched RAT network comprises long term evolution (LTE).

19. An apparatus for wireless communications, comprising:
means for determining a multi-mode device that has camped on a packet switched radio access technology (RAT) network is capable of supporting a voice service;
means for determining an attach type from a plurality of attach types based on first parameters of a home network and voice service capability;
means for selecting a first domain from a first plurality of domains for the voice service over the RAT utilizing the attach type and one or more second parameters, wherein the first plurality of domains comprise single carrier-circuit switched fall back (1xCSFB) domain; and
means for selecting, from a second plurality of domains, a second domain for short message service (SMS) over the packet switched RAT network utilizing the one or more second parameters and registration information about the selected first domain if the multi-mode device is capable of supporting SMS.

20. The apparatus of claim 19 , wherein the one or more second parameters comprise home operator preferences, visited operator preferences, visited operator capabilities, and user settings.

21. The apparatus of claim 19 , further comprising:
means for receiving a system information block (SIB) message; and
means for selecting the first or the second domain utilizing information included in the SIB message.

22. The apparatus of claim 19 , further comprising:
means for determining priorities of the first and the second plurality of domains; and means for selecting the first and the second domain based on the determined priorities.

23. The apparatus of claim 19 , further comprising:
means for disabling the packet switched RAT network temporarily if the multi-mode device is unable to select at least one of the first or the second domains; and
means for selecting another RAT that supports voice service or SMS.

24. The apparatus of claim 23 , further comprising:
means for initializing a timer with a predetermined value while disabling the packet switched RAT network; and
means for trying to establish a connection with the disabled packet switched RAT network after the timer expires.

25. The apparatus of claim 19 , further comprising:
means for re-selecting the first domain if a higher priority domain becomes available.

26. The apparatus of claim 19 , wherein the plurality of attach types comprise circuit switched (CS)-only voice service, CS-preferred voice service, packet switched (PS)-only voice service, and PS-preferred voice service.

27. The apparatus of claim 19 , wherein the means for selecting the second domain comprises:
means fo

Assignees

• Ramachandran Shyamal
• Klingenbrunn Thomas
• Qualcomm Inc

Inventors

• Ramachandran Shyamal
• Klingenbrunn Thomas

Classifications

• H04W88/06

  adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals · CPC title

• H04W8/18

  Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data · CPC title

• H04W4/14

  Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD] · CPC title

• H04W48/18 Primary

  Selecting a network or a communication service · CPC title