RADIO COMMUNICATION SYSTEM, RADIO TERMINAL, RADIO STATION, NETWORK APPARATUS, AND INFORMATION COLLECTING METHOD

• US 20140228016A1
• Filed: 09/28/2012
• Published: 08/14/2014
• Est. Priority Date: 09/30/2011
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Futaki, Hisashi
• Granted Patent: US 9,801,086 B2
• Time in Patent Office: Days
• US Class Current: 455/422.1
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/0058 Transmission of hand-off measurement information, e.g. measurement reports
• 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 36/0083 Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
• CPC Class Codes: H04W 36/0085 Hand-off measurements

Abstract

The present invention is a radio communication system that a radio terminal obtains measurement information indicated by a radio network in an idle state, and reports the obtained measurement information in an active state, the radio communication system comprising: a first radio station managing a first cell of a first radio access technology comprises in the first cell; notification means configured to notify the radio terminal of the first configuration information related to obtainment of the measurement information in the first cell; and instruction means configured to instruct the radio terminal to report information related to the measurement information obtained in the first cell after the radio terminal moves to a second cell of a second radio access technology different from the first radio access technology.

Claims

1. A radio communication system that a radio terminal obtains measurement information indicated by a radio network in an idle state, and reports the obtained measurement information in an active state, the radio communication system comprising:

a first radio station configured to manage a first cell of a first radio access technology comprises in the first cell;

notification means configured to notify the radio terminal of a first configuration information related to obtainment of the measurement information in the first cell; and

instruction means configured to instruct the radio terminal to report information related to the measurement information obtained in the first cell after the radio terminal moves to a second cell of a second radio access technology different from the first radio access technology.

2. The radio communication system according to claim 1, wherein the instruction means instructs the radio terminal to report, as information related to the measurement information obtained in the first cell, whether the first measurement information obtained in the first cell is stored.

4. The radio communication system according to claim 1, wherein the radio terminal has reporting means configured to report to a second radio station managing the second cell, storing the first measurement information obtained in the first cell.

6. The radio communication system according to claim 1, wherein the first radio station has requesting means configured to request the radio terminal to obtain a second measurement information in the second cell after the radio terminal moves to the second cell.

8. The radio communication system according to claim 6, wherein the radio terminal reports to the second station, a request reception notification that indicates reception of the request, or the second configuration information notified from the first radio station.

11. The radio communication system according claim 6, wherein the radio terminal obtains the second measurement information in the second cell by reusing at least some of the first configuration information after moving to the second cell.

3. (canceled)

5. (canceled)

7. (canceled)

9-10. -10. (canceled)

12-19. -19. (canceled)

20. A radio terminal that obtains measurement information indicated by a network in an idle state, and reports the obtained measurement information in an active state, comprising:

receiving means configured to receive a first configuration information related to obtainment of the measurement information in a first cell from a first radio station managing the first cell of a first radio access technology, and receive an instruction to report information related to the measurement information obtained in the first cell after moving to a second cell of a second radio access technology different from the first radio access technology; and

reporting means configured to report information related to the measurement information in the second cell according to the instruction.

21. The radio terminal according to claim 20, wherein the reporting means reports to a second radio station managing the second cell, storing the first measurement information obtained in the first cell as information related to the measurement information obtained in the first cell.

22. The radio terminal according to claim 21, wherein the reporting means reports in the second cell, the first measurement information to which an identifier of the first radio access technology is added.

23. The radio terminal according to claim 20, further comprising measurement information obtaining means configured to obtain measurement information in the second cell according to a request from the first radio station to obtain measurement information in the second cell, after moving to the second cell.

24. The radio terminal according to claim 23, further comprising means configured to receive from the first radio station, a request including at least one of a message indicating the request and a notification message of the second configuration information related to obtainment of the measurement information in the second cell, and reports to the second radio station, a request reception notification that indicates reception of the request, or the second configuration information notified from the first radio station.

26. The radio terminal according to claim 23, wherein the measurement information obtaining means stores in advance information on a first measurement item and a second measurement item that serve as an obtainment target of the measurement information in each of the first cell and the second cell, and changes an obtainment target from the first item to the second item after moving from the first cell to the second cell.

27. The radio terminal according to claim 23, wherein the measurement information obtaining means obtains the second measurement information in the second cell by reusing at least some of the first configuration information after moving to the second cell.

29. The radio terminal according to claim 20, wherein the measurement information obtaining means takes over at least one of the absolute time, the logging duration, the logging interval and the trace related information in any combination.

30. The radio terminal according to claim 29, wherein the measurement information obtaining means measures at least one of the logging duration and the logging interval by a timer, and continues at least one of a timer value for measuring the logging duration and a timer value for measuring the logging interval.

32. The radio terminal according to claim 20, wherein the measurement information obtaining means adds information indicating radio access technology corresponding to the obtained measurement information when reporting the first measurement information or the second measurement information.

25. (canceled)

28. (canceled)

31. (canceled)

33-34. -34. (canceled)

35. A radio station in a radio communication system that a radio terminal obtains measurement information indicated by a network in an idle state, and reports the obtained measurement information in an active state,

wherein the radio station is a radio station managing a first cell of a first radio access technology, and comprises:

notification means configured to notify a radio terminal in the first cell of a first configuration information related to obtainment of the measurement information in the first cell; and

instruction means configured to instruct the radio terminal to report information related to the measurement information obtained in the first cell after the radio terminal moves to a second cell of a second radio access technology different from the first radio access technology.

36. The radio station according to claim 35, wherein the instruction means instructs the radio terminal to report, as information related to the measurement information obtained in the first cell, whether the first measurement information obtained in the first cell is stored.

38. The radio station according to claim 35, further comprising requesting means configured to request the radio terminal to obtain the measurement information in the second cell after the radio terminal moves to the second cell.

37. (canceled)

39-42. -42. (canceled)

43. A network apparatus that instructs a radio station to let a radio terminal to obtain measurement information in an idle state, and report the obtained measurement information in an active state, comprising:

notification means configured to notify a radio station managing a first cell of a first radio access technology where the radio terminal stays of the first configuration information related to obtainment of the measurement information in the first cell by the radio terminal; and

instruction means configured to instruct the radio station to let the radio terminal to report information related to the measurement information obtained in the first cell after the radio terminal moves to a second cell of a second radio access technology different from the first radio access technology.

44. An information collecting method that a radio terminal obtains measurement information indicated by a radio network in an idle state, and reports the obtained measurement information in an active state, comprising:

notifying, in a first cell of a first radio access technology, the radio terminal of a first configuration information related to obtainment of the measurement information in the first cell; and

requesting the radio terminal to report information related to the measurement information obtained in the first cell after the radio terminal moves to a second cell of a second radio access technology different from the first radio access technology.

45. An information collecting method that a radio terminal obtains measurement information indicated by a radio network in an idle state, and reports the obtained measurement information in an active state, comprising:

receiving a first configuration information related to obtainment of the measurement information in the first cell from a first radio station managing a first cell of a first radio access technology, and an instruction to report information related to a first measurement information obtained in the first cell after the radio terminal moves to a second cell of a second radio access technology different from the first radio access technology; and

reporting information related to the first measurement information to a second radio station managing the second cell according to the instruction.