Mobile broadband wireless access system for transferring service information during handover

• US 20050239465A1
• Filed: 03/03/2005
• Published: 10/27/2005
• Est. Priority Date: 03/05/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Jin, Young Suk, Ryu, Gi Seon, Lee, Chang Jae
• Granted Patent: US 7,873,359 B2
• Time in Patent Office: Days
• US Class Current: 455/436
• CPC Class Codes: H04W 36/26 by agreed or negotiated communication parameters
• CPC Class Codes: H04W 92/20 between access points

Abstract

The present invention is related to transmitting quality of service (QoS) information of a target base station for admitted service flows during a handover operation. The invention comprises providing a service to a mobile station from a serving base station and receiving at the serving base station a handover request from the mobile station. The serving base station the provides a handover notification to a target base station, wherein the handover notification comprises a QoS parameter associated with the service. The serving base station then receives from the target base station a handover notification response, wherein the handover notification response comprises service level prediction information that is determined in response to the QoS parameter associated with the service. Finally, the serving base station provides a handover response to the mobile station, the handover response comprising the service level prediction information.

Claims

1. A method of receiving quality of service (QoS) information in a mobile station associated with a handover operation in a wireless communication system, the method comprising:

receiving at least one service from a serving base station;

scanning at least one target base station to perform the handover operation;

requesting a handover request with the serving base station; and

receiving a handover response comprising service level prediction information from the serving base station, wherein the service level prediction information is determined by the at least one target base station in response to a QoS parameter associated with the at least one service received from the serving base station.

2. The method of claim 1, wherein the QoS parameter comprises at least one of latency information, reserved traffic rate, tolerable traffic rate and sustained traffic rate.

3. The method of claim 1, wherein the service level prediction information comprises at least one of (1) no service flow available for the mobile station, (2) all service flow available, (3) some service flow available, and (4) no service level prediction available.

4. The method of claim 1, wherein the handover response further comprises a recommended target base station to where the mobile station should handover.

5. The method of claim 1, wherein the mobile station determines the at least one target base station to handover to.

6. The method of claim 1, further comprising requesting the at least one service from the serving base station.

7. The method of claim 6, further comprising receiving a service approval message from the serving base station.

8. The method of claim 7, wherein the service approval message comprises at least one of:

a QoS parameter value for the at least one service requested; and

an indication as to the possibility of activating the at least one service requested.

9. A method of providing quality of service (QoS) information associated with a handover operation in a wireless communication system, the method comprising:

providing at least one service to a mobile station from a serving base station;

receiving at the serving base station a handover request from the mobile station;

providing a handover notification to at least one target base station, wherein the handover notification comprises a QoS parameter associated with the at least one service;

receiving from the at least one target base station a handover notification response, wherein the handover notification response comprises service level prediction information that is determined in response to the QoS parameter associated with the at least one service; and

providing a handover response to the mobile station, the handover response comprising the service level prediction information.

10. The method of claim 9, wherein the QoS parameter comprises at least one of latency information, reserved traffic rate, tolerable traffic rate and sustained traffic rate.

11. The method of claim 9, wherein the service level prediction information comprises at least one of (1) no service flow available for a mobile station, (2) all service flow available, (3) some service flow available, and (4) no service level prediction available.

12. The method of claim 9, wherein the handover response further comprises a recommended target base station to where the mobile station should handover.

13. The method of claim 9, wherein the mobile station determines the at least one target base station to handover to.

14. The method of claim 9, further comprising:

receiving a service request for at least one service from the mobile station;

checking for the presence of radio resources available for the at least one service requested;

allocating a radio resource to the mobile station having requested the at least one service if radio resources are available; and

transmitting a service approval message to the mobile station.

15. The method of claim 13, wherein the service approval message comprises at least one of:

a QoS parameter value for the at least one service requested; and

an indication as to the possibility of activating the at least one service requested.

16. The method of claim 9, wherein the serving base station transmits information regarding at least one admitted service flow to the at least one target base station allowing a QoS parameter value for the at least one admitted service flow to be periodically provided to the at least one target base station.

17. The method of claim 9, further comprising:

providing a handover confirmation to the at least one target base station;

receiving at the serving base station a handover indication from the mobile station; and

discontinuing communication between the serving base station and the mobile station.

18. A mobile station for receiving quality of service (QoS) information associated with a handover operation in a wireless communication system, the mobile station comprising:

means for receiving at least one service from a serving base station;

means for scanning at least one target base station to perform the handover operation; and

means for requesting a handover request with the serving base station;

wherein the means for receiving the at least one service receives a handover response, the handover response comprising service level prediction information from the serving base station, wherein the service level prediction information is determined by the at least one target base station in response to a QoS parameter associated with the at least one service received from the serving base station.

19. The mobile station of claim 18, wherein the QoS parameter comprises at least one of latency information, reserved traffic rate, tolerable traffic rate and sustained traffic rate.

20. The mobile station of claim 18, wherein the service level prediction information comprises at least one of (1) no service flow available for the mobile station, (2) all service flow available, (3) some service flow available, and (4) no service level prediction available.

21. The mobile station of claim 18, wherein the handover response further comprises a recommended target base station to where the mobile station should handover.

22. The mobile station of claim 18, wherein the mobile station determines the at least one target base station to handover to.

23. The mobile station of claim 18, wherein the means for requesting the handover request requests the at least one service from the serving base station.

24. The mobile station of claim 23, wherein the means for receiving the at least one service receives a service approval message from the serving base station.

25. The mobile station of claim 24, wherein the service approval message comprises at least one of:

a QoS parameter value for the at least one service requested; and

an indication as to the possibility of activating the at least one service requested.

26. A network for providing quality of service (QoS) information associated with a handover operation in a wireless communication system, the network comprising:

means for providing at least one service to a mobile station from a serving base station; and

means for receiving at the serving base station a handover request from the mobile station;

wherein the means for providing the at least one service provides a handover notification to at least one target base station, wherein the handover notification comprises a QoS parameter associated with the at least one service;

wherein the means for receiving the handover request receives from the at least one target base station a handover notification response, the handover notification response comprising service level prediction information that is determined in response to the QoS parameter associated with the at least one service;

wherein the means for providing the at least one service provides a handover response to the mobile station, the handover response comprising the service level prediction information.

27. The network of claim 26, wherein the QoS parameter comprises at least one of latency information, reserved traffic rate, tolerable traffic rate and sustained traffic rate.

28. The network of claim 26, wherein the service level prediction information comprises at least one of (1) no service flow available for a mobile station, (2) all service flow available, (3) some service flow available, and (4) no service level prediction available.

29. The network of claim 26, wherein the handover response further comprises a recommended target base station to where the mobile station should handover.

30. The network of claim 26, wherein the mobile station determines the at least one target base station to handover to.

31. The network of claim 26, further comprising:

means for receiving a service request for at least one service from the mobile station;

means for checking the presence of radio resources available for the at least one service requested and allocating a radio resource to the mobile station having requested the at least one service if radio resources are available; and

means for transmitting a service approval message to the mobile station.

32. The apparatus of claim 31, wherein the service approval message comprises at least one of:

a QoS parameter value for the at least one service requested; and

an indication as to the possibility of activating the at least one service requested.

33. The apparatus of claim 26, wherein the serving base station transmits information regarding at least one admitted service flow to the at least one target base station allowing a QoS parameter value for the at least one admitted service flow to be periodically provided to the at least one target base station.

34. The apparatus of claim 26, further comprising:

means for providing a handover confirmation to the at least one target base station;

means for receiving at the serving base station a handover indication from the mobile station; and

means for discontinuing communication between the serving base station and the mobile station.