Method of Service Redirection Procedures in TD-SCDMA and GSM Hybrid Mobile Terminals

• US 20110243099A1
• Filed: 08/04/2010
• Published: 10/06/2011
• Est. Priority Date: 03/31/2010
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Shi, Guangming, Lee, Kuo-Chun, Chin, Tom
• Application Number:
  US12/850,378
• Publication Number:
  US 20110243099A1
• Time in Patent Office: Days
• US Class Current: 370/335
• CPC Class Codes: H04W 36/0066 of control information between different types of networks in order to establish a new radio link in the target network
• 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

Certain aspects of the present disclosure propose techniques for service redirection in Time Division Synchronous Code Division Multiple Access (TD-SCDMA) and Global System for Mobile communications (GSM) hybrid mobile terminals.

Claims

1. A method of wireless communication by multi-mode user equipment (UE), comprising:

selecting a first radio access technology (RAT) to conduct a Packet-Switched (PS) call, when both the first RAT and a second RAT are available; and

selecting the second RAT to conduct a Circuit-Switched (CS) call, when both the RAT and the second RAT are available.

2. The method of claim 1, wherein the first RAT comprises a RAT based on Time Division Synchronous Code Division Multiple Access (TD-SCDMA) and the second RAT comprises a RAT based on Global System for Mobile communications (GSM).

3. The method of claim 2, further comprising:

conducting both the CS and PS calls using TD-SCDMA, if only the RAT based on TD-SCDMA is available; and

conducting both the CS and PS calls using GSM, if only the RAT based on GSM is available.

4. The method of claim 2, further comprising:

monitoring, in an idle mode, a network operating according to the RAT based on TD-SCDMA.

5. The method of claim 2, wherein:

the PS call comprises a Mobile Originated (MO) PS call; and

the MO PS call is originated using the RAT based on TD-SCDMA.

6. The method of claim 2, wherein:

the PS call comprises a Mobile Terminated (MT) PS call; and

the MT PS call is originated using the RAT based on TD-SCDMA.

7. The method of claim 2, wherein

the CS call comprises a Mobile Originated (MO) CS call, and the method further comprising

performing cell reselection before originating the MO CS call using the RAT based on GSM.

8. The method of claim 2, wherein

the CS call comprises a Mobile Terminated (MT) CS call, and the method further comprising:

originating the MT CS call in a first network operating according to the RAT based on TD-SCDMA; and

performing, during the MT CS call, a handover to a second network operating according to the RAT based on GSM.

9. The method of claim 8, wherein performing the handover comprises:

receiving, from the first network, a measurement control message and a radio bearer setup message;

in response to the measurement control message and the radio bearer setup message, transmitting, to the first network, a measurement report related to a target cell of the second network;

setting up the MT CS call in the first network after transmitting the measurement report; and

relocating the MT CS call to the target cell, wherein the relocation is initiated by the first network after the MT CS call is being set up.

10. An apparatus for wireless communication, comprising:

means for selecting a first radio access technology (RAT) to conduct a Packet-Switched (PS) call, when both the first RAT and a second RAT are available; and

means for selecting the second RAT to conduct a Circuit-Switched (CS) call, when both the RAT and the second RAT are available.

11. The apparatus of claim 10, wherein the first RAT comprises a RAT based on Time Division Synchronous Code Division Multiple Access (TD-SCDMA) and the second RAT comprises a RAT based on Global System for Mobile communications (GSM).

12. The apparatus of claim 11, further comprising:

means for conducting both the CS and PS calls using TD-SCDMA, if only the RAT based on TD-SCDMA is available; and

means for conducting both the CS and PS calls using GSM, if only the RAT based on GSM is available.

13. The apparatus of claim 11, further comprising:

means for monitoring, in an idle mode, a network operating according to the RAT based on TD-SCDMA.

14. The apparatus of claim 11, wherein:

the PS call comprises a Mobile Originated (MO) PS call; and

the MO PS call is originated using the RAT based on TD-SCDMA.

15. The apparatus of claim 11, wherein:

the PS call comprises a Mobile Terminated (MT) PS call; and

the MT PS call is originated using the RAT based on TD-SCDMA.

16. The apparatus of claim 11, wherein

the CS call comprises a Mobile Originated (MO) CS call, and the apparatus further comprising

means for performing cell reselection before originating the MO CS call using the RAT based on GSM.

17. The apparatus of claim 11, wherein

the CS call comprises a Mobile Terminated (MT) CS call, and the apparatus further comprising:

means for originating the MT CS call in a first network operating according to the RAT based on TD-SCDMA; and

means for performing, during the MT CS call, a handover to a second network operating according to the RAT based on GSM.

18. The apparatus of claim 17, wherein the means for performing the handover comprises:

means for receiving, from the first network, a measurement control message and a radio bearer setup message;

means for transmitting, to the first network in response to the measurement control message and the radio bearer setup message, a measurement report related to a target cell of the second network;

means for setting up the MT CS call in the first network after transmitting the measurement report; and

means for relocating the MT CS call to the target cell, wherein the relocation is initiated by the first network after the MT CS call is being set up.

19. A computer program product, comprising:

a computer-readable medium comprising code for;

selecting a first radio access technology (RAT) to conduct a Packet-Switched (PS) call, when both the first RAT and a second RAT are available; and

selecting the second RAT to conduct a Circuit-Switched (CS) call, when both the RAT and the second RAT are available.

20. The computer program product of claim 19, wherein the first RAT comprises a RAT based on Time Division Synchronous Code Division Multiple Access (TD-SCDMA) and the second RAT comprises a RAT based on Global System for Mobile communications (GSM).

21. The computer program product of claim 20, wherein the computer-readable medium further comprising code for:

conducting both the CS and PS calls using TD-SCDMA, if only the RAT based on TD-SCDMA is available; and

conducting both the CS and PS calls using GSM, if only the RAT based on GSM is available.

22. The computer program product of claim 20, wherein the computer-readable medium further comprising code for:

monitoring, in an idle mode, a network operating according to the RAT based on TD-SCDMA.

23. The computer program product of claim 20, wherein:

the PS call comprises a Mobile Originated (MO) PS call; and

the MO PS call is originated using the RAT based on TD-SCDMA.

24. The computer program product of claim 20, wherein:

the PS call comprises a Mobile Terminated (MT) PS call; and

the MT PS call is originated using the RAT based on TD-SCDMA.

25. The computer program product of claim 20, wherein

the CS call comprises a Mobile Originated (MO) CS call, and wherein the computer-readable medium further comprising code for

performing cell reselection before originating the MO CS call using the RAT based on GSM.

26. The computer program product of claim 20, wherein

the CS call comprises a Mobile Terminated (MT) CS call, and wherein the computer-readable medium further comprising code for:

originating the MT CS call in a first network operating according to the RAT based on TD-SCDMA; and

performing, during the MT CS call, a handover to a second network operating according to the RAT based on GSM.

27. The computer program product of claim 26, wherein said performing the handover comprises:

receiving, from the first network, a measurement control message and a radio bearer setup message;

in response to the measurement control message and the radio bearer setup message, transmitting, to the first network, a measurement report related to a target cell of the second network;

setting up the MT CS call in the first network after transmitting the measurement report; and

relocating the MT CS call to the target cell, wherein the relocation is initiated by the first network after the MT CS call is being set up.

28. An apparatus for wireless communication, comprising:

at least one processor; and

a memory coupled to the at least one processor,

wherein the at least one processor is configured to;

select a first radio access technology (RAT) to conduct a Packet-Switched (PS) call, when both the first RAT and a second RAT are available; and

select the second RAT to conduct a Circuit-Switched (CS) call, when both the RAT and the second RAT are available.

29. The apparatus of claim 28, wherein the first RAT comprises a RAT based on Time Division Synchronous Code Division Multiple Access (TD-SCDMA) and the second RAT comprises a RAT based on Global System for Mobile communications (GSM).

30. The apparatus of claim 29, wherein the at least one processor is also configured to:

conduct both the CS and PS calls using TD-SCDMA, if only the RAT based on TD-SCDMA is available; and

conduct both the CS and PS calls using GSM, if only the RAT based on GSM is available.

31. The apparatus of claim 29, wherein the at least one processor is also configured to

monitor, in an idle mode, a network operating according to the RAT based on TD-SCDMA.

32. The apparatus of claim 29, wherein:

the PS call comprises a Mobile Originated (MO) PS call; and

the MO PS call is originated using the RAT based on TD-SCDMA.

33. The apparatus of claim 29, wherein:

the PS call comprises a Mobile Terminated (MT) PS call; and

the MT PS call is originated using the RAT based on TD-SCDMA.

34. The apparatus of claim 29, wherein

the CS call comprises a Mobile Originated (MO) CS call, and wherein the at least one processor is also configured to

perform cell reselection before originating the MO CS call using the RAT based on GSM.

35. The apparatus of claim 29, wherein

the CS call comprises a Mobile Terminated (MT) CS call, and wherein the at least one processor is also configured to:

originate the MT CS call in a first network operating according to the RAT based on TD-SCDMA; and

perform, during the MT CS call, a handover to a second network operating according to the RAT based on GSM.

36. The apparatus of claim 35, wherein the at least one processor is also configured to:

receive, from the first network, a measurement control message and a radio bearer setup message;

transmit, to the first network in response to the measurement control message and the radio bearer setup message, a measurement report related to a target cell of the second network;

set up the MT CS call in the first network after transmitting the measurement report; and

relocate the MT CS call to the target cell, wherein the relocation is initiated by the first network after the MT CS call is being set up.