Voice/data hybrid mode

• US 9,370,043 B2
• Filed: 01/31/2013
• Issued: 06/14/2016
• Est. Priority Date: 02/03/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Swaminathan, Arvind, Balasubramanian, Srinivasan, Klingenbrunn, Thomas, Ramachandran, Shyamal, Mahajan, Amit
• Primary Examiner(s): Hamza, Faruk
• Assistant Examiner(s): DECKER, CASSANDRA L
• Application Number:
  US13/756,133
• Publication Number:
  US 20130201850A1
• Time in Patent Office: 1,230 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04J 11/0023 Interference mitigation or co-ordination direct sequence spread spectrum [DSSS] systems H04B1/7097; frequency hopping H04B1/713; allocation criteria for ingress interference avoidance H04L5/0062; frequency allocation criteria for requirements on out-of-channel emissions H04L5/0066; arrangements for removing intersymbol interference or baseband equalisers H04L25/03006; peak power aspects in multicarrier modulation H04L27/2614; power management H04W52/00; traffic scheduling H04W72/54, H04W72/541
• CPC Class Codes: H04J 2011/0006 with CDM/CDMA
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• CPC Class Codes: H04W 72/569 of the traffic information
• CPC Class Codes: H04W 76/16 Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 88/16 Gateway arrangements

Abstract

A method for voice/data hybrid mode within a user equipment (UE). The method includes detecting a first radio access technology (RAT) activity in response to a received first RAT suspend request for a second RAT tune-away. The method also includes adaptively performing the first RAT suspend request according to a predetermined priority of the detected first RAT activity and a second RAT tune-away activity. A receive chain is shared between a first RAT modem and a second RAT modem of the UE.

Claims

1. A method of wireless communication within a user equipment (UE), comprising:

detecting an activity being performed by the UE using a first radio access technology (RAT) in response to a received first RAT suspend request for a second RAT tune-away, wherein a first receive chain and a second receive chain are shared between a first RAT modem of the UE and a second RAT modem of the UE;

determining whether to delay the second RAT tune-away based at least in part on a predetermined priority of the detected activity, wherein the detected activity has priority over the second RAT tune-away when the second RAT tune-away is requested for a call originated at the UE, and the second RAT tune-away has priority over the detected activity when the second RAT tune-away is requested for a call terminating at the UE; and

performing application flow control to save a current IP context of a first RAT application when the second RAT tune-away is performed.

2. The method of claim 1, further comprising:

detecting a reduced data rate in response to performing the second RAT tune-away; and

increasing a reported channel quality indicator (CQI) report by a predetermined amount until a predetermined data rate is detected.

3. The method of claim 1, further comprising:

halting periodic measurements when performing the second RAT tune-away.

4. The method of claim 1, further comprising:

blocking a notification of the second RAT tune-away to at least the first RAT application.

5. The method of claim 1, further comprising scheduling the second RAT tune-away in response to the received first RAT suspend request to reduce overlap with the detected activity of the first RAT.

6. The method of claim 1, in which the first RAT comprises long term evolution (LTE) and a second RAT comprises CDMA2000.

7. The method of claim 1, further comprising requesting an increased paging cycle duration for the first RAT prior to performing the second RAT tune-away.

8. An apparatus configured for wireless communication within a user equipment (UE), the apparatus comprising:

a memory; and

at least one processor coupled to the memory, the at least one processor being configured;

to detect an activity being performed by the UE using a first radio access technology (RAT) in response to a received first RAT suspend request for a second RAT tune-away, wherein a first receive chain and a second receive chain are shared between a first RAT modem of the UE and a second RAT modem of the UE;

to determine whether to delay the second RAT tune-away based at least in part on a predetermined priority of the detected activity, wherein the detected activity has priority over the second RAT tune-away when the second RAT tune-away is requested for a call originated at the UE, and the second RAT tune-away has priority over the detected activity when the second RAT tune-away is requested for a call terminating at the UE; and

to perform application flow control to save a current IP context of a first RAT application when the second RAT tune-away is performed.

9. The apparatus of claim 8, in which the processor is further configured to:

detect a reduced data rate in response to performing the second RAT tune-away; and

increase a reported channel quality indicator (CQI) report by a predetermined amount until a predetermined data rate is detected.

10. The apparatus of claim 8, in which the processor is further configured to halt periodic measurements when performing the second RAT tune-away.

11. The apparatus of claim 8, in which the processor is further configured to block a notification of the second RAT tune-away to at least the first RAT application.

12. The apparatus of claim 8, in which the processor is further configured to schedule the second RAT tune-away in response to the received first RAT suspend request to reduce overlap with the detected activity of the first RAT.

13. The apparatus of claim 8, in which the first RAT comprises long term evolution (LTE) and a second RAT comprises CDMA2000.

14. The apparatus of claim 8, in which the at least one processor is further configured to request an increased paging cycle duration for the first RAT prior to performing the second RAT tune-away.

15. A non-transitory computer-readable medium having program code recorded thereon for wireless communication within a user equipment (UE), the program code comprising:

program code to detect an activity being performed by the UE using a first radio access technology (RAT) in response to a received first RAT suspend request for a second RAT tune-away, wherein a first receive chain and a second receive chain are shared between a first RAT modem of the UE and a second RAT modem of the UE;

program code to determine whether to delay the second RAT tune-away based at least in part on a predetermined priority of the detected activity, wherein the detected activity has priority over the second RAT tune-away when the second RAT tune-away is requested for a call originated at the UE, and the second RAT tune-away has priority over the detected activity when the second RAT tune-away is requested for a call terminating at the UE; and

program code to perform application flow control to save a current IP context of a first RAT application when the second RAT tune-away is performed.

16. The computer program product of claim 15, in which the program code further comprises program code to request an increased paging cycle duration for the first RAT prior to performing the second RAT tune-away.

17. An apparatus for wireless communication within a user equipment (UE), comprising:

means for detecting an activity being performed by the UE using a first radio access technology (RAT) in response to a received first RAT suspend request for a second RAT tune-away, wherein a first receive chain and a second receive chain are shared between a first RAT modem of the UE and a second RAT modem of the UE;

means for determining whether to delay the second RAT tune-away based at least in part on a predetermined priority of the detected activity, wherein the detected activity has priority over the second RAT tune-away when the second RAT tune-away is requested for a call originated at the UE, and the second RAT tune-away has priority over the detected activity when the second RAT tune-away is requested for a call terminating at the UE; and

means for performing application flow control to save a current IP context of a first RAT application when the second RAT tune-away is performed.

18. The apparatus of claim 17, further comprising means for requesting an increased paging cycle duration for the first RAT prior to performing the second RAT tune-away.