Method and device which obtains updated system information when a component carrier has changed

• US 9,191,924 B2
• Filed: 04/28/2014
• Issued: 11/17/2015
• Est. Priority Date: 10/22/2008
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Yamada, Shohei, Uemura, Katsunari
• Primary Examiner(s): GHOWRWAL, OMAR J
• Application Number:
  US14/263,913
• Publication Number:
  US 20140233451A1
• Time in Patent Office: 568 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0026 Division using four or more dimensions
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/0087 when data requirements change
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states

Abstract

A mobile station apparatus includes a radio resource control circuit. The radio resource control circuit obtains, from a base station apparatus, system information broadcasted on a first component carrier. The radio resource control circuit also obtains, from the base station apparatus, updated system information corresponding to a second component carrier via a dedicated radio resource control signaling in a case that the system information corresponding to the second component carrier is changed.

Claims

1. A terminal apparatus comprising:

a wireless circuit configured to and/or programmed to;

communicate with a base station apparatus by carrier aggregation using a plurality of component carriers including a first component carrier and one or more second component carriers;

obtain, from the base station apparatus, system information broadcasted on the first component carrier; and

obtain, from the base station apparatus, system information corresponding to a component carrier of the one or more second component carriers, wherein

the system information corresponding to the component carrier of the one or more second component carriers is used in connected state and is updated using an Radio Resource Control (RRC) Connection Reconfiguration message.

2. The terminal apparatus according to claim 1, wherein the system information corresponding to the component carrier of the one or more second component carriers includes a radio resource configuration common (radioResourceConfigCommon).

3. The terminal apparatus according to claim 1, wherein a notification of a change of the system information broadcasted on the first component carrier is transmitted using a paging channel on the first component carrier.

4. The terminal apparatus according to claim 1, wherein the system information broadcasted on the first component carrier includes a value tag which is used for determining whether it is different from the value tag stored in the terminal apparatus.

5. The terminal apparatus according to claim 1, wherein

the system information broadcasted on the first component carrier includes a value tag which is used for determining whether it is different from the value tag stored in the terminal apparatus, and

a notification of a change of the system information broadcasted on the first component carrier is transmitted using a paging channel on the first component carrier.

6. A base station apparatus comprising:

a wireless circuit configured to and/or programmed to;

communicate with a terminal apparatus by carrier aggregation using a plurality of component carriers including a first component carrier and one or more second component carriers for the terminal station apparatus;

provide, to the terminal apparatus, system information broadcasted on the first component carrier; and

provide, to the terminal apparatus, system information corresponding to a component carrier of the one of more second component carriers, wherein

the system information corresponding to the component carrier of the one or more second component carriers is used in connected state and is updated using an Radio Resource Control (RRC) Connection Reconfiguration message.

7. The base station apparatus according to claim 6, wherein the system information corresponding to the component carrier of the one or more second component carriers includes a radio resource configuration common (radioResourceConfigCommon).

8. The base station apparatus according to claim 6, wherein

a notification of a change of the system information broadcasted on the first component carrier is transmitted using a paging channel on the first component carrier.

9. The base station apparatus according to claim 6, wherein

the system information broadcasted on the first component carrier includes a value tag which is used for determining whether it is different from the value tag stored in the terminal apparatus.

10. The base station apparatus according to claim 6, wherein

the system information broadcasted on the first component carrier includes a value tag which is used for determining whether it is different from the value tag stored in the terminal apparatus, and

a notification of a change of the system information broadcasted on the first component carrier is transmitted using a paging channel on the first component carrier.

11. A method performed by a terminal apparatus, the method comprising:

communicating with a base station apparatus by carrier aggregation using a plurality of component carriers including a first component carrier and one or more second component carriers;

obtaining, from the base station apparatus, system information broadcasted on the first component carrier; and

obtaining, from the base station apparatus, system information corresponding to a component carrier of the one or more second component carriers, wherein

the system information corresponding to the component carrier of the one or more second component carriers is used in connected state and is updated using an Radio Resource Control (RRC) Connection Reconfiguration message.

12. A processing circuit mounted in the terminal apparatus, wherein the processing circuit makes the terminal apparatus perform the method according to claim 11.

13. The method according to claim 11, wherein the system information corresponding to the component carrier of the one or more second component carriers includes a radio resource configuration common (radioResourceConfigCommon).

14. The method according to claim 11, wherein a notification of a change of the system information broadcasted on the first component carrier is transmitted using a paging channel on the first component carrier.

15. The method according to claim 11, wherein the system information broadcasted on the first component carrier includes a value tag which is used for determining whether it is different from the value tag stored in the terminal apparatus.

16. The method according to claim 11, wherein

the system information broadcasted on the first component carrier includes a value tag which is used for determining whether it is different from the value tag stored in the terminal apparatus, and

a notification of a change of the system information broadcasted on the first component carrier is transmitted using a paging channel on the first component carrier.

22. The method according to claim 11, wherein

the system information broadcasted on the first component carrier includes a value tag which is used for determining whether it is different from the value tag stored in the terminal apparatus, and

a notification of a change of the system information broadcasted on the first component carrier is transmitted using a paging channel on the first component carrier.

17. A method performed by a base station apparatus, the method comprising:

communicating with a terminal apparatus by carrier aggregation using a plurality of component carriers including a first component carrier and one or more second component carriers for the terminal apparatus;

providing, to the terminal apparatus, system information broadcasted on the first component carrier; and

providing, to the terminal apparatus, system information corresponding to a component carrier of the one or more second component carriers, wherein

the system information corresponding to the component carrier of the one or more second component carriers is used in connected state and is updated using an Radio Resource Control (RRC) Connection Reconfiguration message.

18. A processing circuit mounted in the base station apparatus, wherein the processing circuit makes the base station apparatus perform the method according to claim 17.

19. The method according to claim 17, wherein the system information corresponding to the component carrier of the one or more second component carriers includes a radio resource configuration common (radioResourceConfigCommon).

20. The method according to claim 17, wherein a notification of a change of the system information broadcasted on the first component carrier is transmitted using a paging channel on the first component carrier.

21. The method according to claim 17, wherein the system information broadcasted on the first component carrier includes a value tag which is used for determining whether it is different from the value tag stored in the terminal apparatus.