Reducing network-initiated QoS interruption time when radio and core networks are out of synchronization due to different underlying technologies

• US 9,179,381 B2
• Filed: 09/29/2011
• Issued: 11/03/2015
• Est. Priority Date: 09/29/2011
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Zhao, Suli, Payyappilly, Ajith Tom, Balasubramanian, Srinivasan
• Primary Examiner(s): Yao, Kwang B
• Assistant Examiner(s): LOO, JUVENA W
• Application Number:
  US13/249,125
• Publication Number:
  US 20130083771A1
• Time in Patent Office: 1,496 Days
• Field of Search: 370310-350
• US Class Current: 1/1
• CPC Class Codes: H04W 36/005 involving radio access media independent information, e.g. MIH [Media independent Hand-off]
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface

Abstract

A method enables a user equipment (UE) intervention to reduce a network-initiated Quality of Service (QoS) interruption time or a disruption of the network-initiated QoS, while avoiding application intervention. The method includes communicating with a source radio access network (RAN) in accordance with a network-initiated quality of service (QoS) profile. The method also includes transferring to a target RAN. The method further includes triggering, by a user equipment (UE), a QoS setup to reestablish the QoS profile.

Claims

1. A method of wireless communication, comprising:

communicating with a source radio access network (RAN) in accordance with a network-initiated quality of service (QoS) profile;

moving to a target RAN;

establishing a new session with the target RAN when the target RAN does not support a session transfer;

triggering, by a user equipment (UE), the target RAN to perform a RAN QoS setup to reestablish the network-initiated QoS profile provided to the new session with the target RAN;

receiving an indication that the target RAN cannot grant the QoS profile;

waiting a predetermined time period before triggering of the QoS setup; and

releasing, by the UE, a QoS context corresponding to the QoS profile when the UE does not return to the source RAN during the predetermined time period.

2. The method of claim 1, further comprising:

repeating the waiting and the triggering of the QoS setup after the predetermined time period a predetermined number of times in response to receiving the indication that the target RAN cannot grant the QoS profile.

3. A method of wireless communication, comprising:

communicating with a source radio access network (RAN) in accordance with a network-initiated quality of service (QoS) profile;

transferring to a target RAN;

triggering, by a user equipment (UE), the target RAN to perform a RAN QoS setup to reestablish the network-initiated QoS profile;

receiving an indication that the target RAN does not support the QoS profile;

waiting a predetermined time period;

in which the triggering the QoS setup occurs when the UE returns to the source RAN during the predetermined time period; and

deleting a QoS context when the UE does not return to the source RAN during the predetermined time period.

4. A user equipment (UE) configured for operation in a wireless communication network, the UE comprising:

a memory; and

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

to communicate with a source radio access network (RAN) in accordance with a network-initiated quality of service (QoS) profile;

to move to a target RAN;

to establish a new session with the target RAN when the target RAN does not support a session transfer;

to trigger the target RAN to perform a RAN QoS setup to reestablish the network-initiated QoS profile provided to the new session with the target RAN;

to receive an indication that the target RAN cannot grant the QoS profile;

to wait a predetermined time period before triggering of the QoS setup; and

to release a QoS context corresponding to the QoS profile when the UE does not return to the source RAN during the predetermined time period.

5. The UE of claim 4, in which the processor is further configured to repeat the wait and the triggering of the QoS setup after the predetermined time period a predetermined number of times in response to receiving the indication that the target RAN cannot grant the QoS profile.

6. A user equipment (UE) for operation in a wireless communication network, the UE comprising:

a memory; and

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

to communicate with a source radio access network (RAN) in accordance with a network-initiated quality of service (QoS) profile;

to transfer to a target RAN;

to trigger the target RAN to perform a RAN QoS setup to reestablish the network-initiated QoS profile;

to receive an indication that the target RAN does not support the QoS profile;

to wait a predetermined time period;

in which the triggering of the QoS setup occurs when the UE returns to the source RAN during the predetermined time period; and

to delete a QoS context when the UE does not return to the source RAN during the predetermined time period.

7. A computer program product configured for wireless communication in a multi-modem user equipment (UE), the computer program product comprising:

a non-transitory computer-readable medium having non-transitory program code recorded thereon, the program code comprising;

program code to communicate with a source radio access network (RAN) in accordance with a network-initiated quality of service (QoS) profile;

program code to move to a target RAN;

program code to establish a new session with the target RAN when the target RAN does not support a session transfer;

program code to trigger, by a user equipment (UE), the target RAN to perform a RAN QoS setup to reestablish the network-initiated QoS profile provided to the new session with the target RAN;

program code to receive an indication that the target RAN cannot grant the QoS profile;

program code to wait a predetermined time period before triggering of the QoS setup; and

program code to release, by the UE, a QoS context corresponding to the QoS profile when the UE does not return to the source RAN during the predetermined time period.

8. A multi-modem user equipment (UE) in a wireless communication system, the UE comprising:

means for communicating with a source radio access network (RAN) in accordance with a network-initiated quality of service (QoS) profile;

means for moving to a target RAN;

means for establishing a new session with the target RAN when the target RAN does not support a session transfer;

means for triggering the target RAN to perform a RAN QoS setup to reestablish the network-initiated QoS profile provided to the new session with the target RAN;

means for receiving an indication that the target RAN cannot grant the QoS profile;

means for waiting a predetermined time period before triggering of the QoS setup; and

means for releasing a QoS context corresponding to the QoS profile when the UE does not return to the source RAN during the predetermined time period.

9. A method of wireless communication, comprising:

communicating with a source radio access network (RAN) in accordance with a network-initiated first quality of service (QoS) profile;

receiving an indication that the source RAN does not support or cannot grant a second QoS profile;

triggering, by a user equipment (UE), the source RAN to perform a RAN QoS setup to reestablish the network-initiated first QoS profile;

waiting a predetermined time, when the indication is that the source RAN cannot grant the second QoS profile; and

retrying triggering of the RAN QoS setup.

10. A user equipment (UE) configured for operation in a wireless communication network, the UE comprising:

a memory; and

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

to communicate with a source radio access network (RAN) in accordance with a network-initiated first quality of service (QoS) profile;

to receive an indication that the source RAN does not support or cannot grant a second QoS profile;

to trigger the source RAN to perform a RAN QoS setup to reestablish the network-initiated first QoS profile without network intervention;

to wait a predetermined time, when the indication is that the source RAN cannot grant the second QoS profile; and

to retry triggering of the RAN QoS setup.

11. A computer program product configured for wireless communication, the computer program product comprising:

a non-transitory computer-readable medium having non-transitory program code recorded thereon, the program code comprising;

program code to communicate with a source radio access network (RAN) in accordance with a network-initiated first quality of service (QoS) profile;

program code to receive an indication that the source RAN does not support or cannot grant a second QoS profile;

program code to trigger, by a user equipment (UE), the source RAN to perform a RAN QoS setup to reestablish the network-initiated first QoS profile;

program code to wait a predetermined time, when the indication is that the source RAN cannot grant the second QoS profile; and

program code to retry triggering of the RAN QoS setup.

12. A user equipment (UE) operable in a wireless communication network, the UE comprising:

means for communicating with a source radio access network (RAN) in accordance with a network-initiated first quality of service (QoS) profile;

means for receiving an indication that the source RAN does not support or cannot grant a second QoS profile;

means for triggering the source RAN to perform a RAN QoS setup to reestablish the network-initiated first QoS profile;

means for waiting a predetermined time, when the indication is that the source RAN cannot grant the second QoS profile; and

means for retrying triggering of the RAN QoS setup.