Method for de-configuring a cell from PUCCH resource in a carrier aggregation system and a device therefor

• US 10,159,076 B2
• Filed: 01/12/2016
• Issued: 12/18/2018
• Est. Priority Date: 01/13/2015
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Sunyoung, Yi, Seungjune
• Primary Examiner(s): Wong, Warner
• Application Number:
  US15/543,541
• Publication Number:
  US 20170374665A1
• Time in Patent Office: 1,071 Days
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 12/5692 Selection among different networks
• CPC Class Codes: H04L 41/0813 characterised by the conditions triggering a change of settings
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• 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 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• 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
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for configuring a Secondary Cell (SCell) with Physical Uplink Control Channel (PUCCH) resource; receiving an Radio Resource Control (RRC) signaling indicating that the PUCCH resource is de-configured from the SCell, wherein the RRC signaling includes an indication which indicates whether the UE activates or deactivates the SCell from which PUCCH resource is de-configured; de-configuring the PUCCH resource from the SCell; and activating or de-activating the SCell according to the indication after the UE de-configures PUCCH from the SCell.

Claims

1. A method for a User Equipment (UE) operating in a wireless communication system, the method comprising:

configuring a Secondary Cell (SCell) with Physical Uplink Control Channel (PUCCH) resource;

receiving an Radio Resource Control (RRC) signaling indicating that the PUCCH resource is de-configured from the SCell, wherein the RRC signaling includes an indication which indicates whether the UE activates or deactivates the SCell from which PUCCH resource is de-configured;

de-configuring the PUCCH resource from the SCell; and

activating or de-activating the SCell according to the indication after the UE de-configures PUCCH from the SCell.

2. The method according to claim 1, wherein the indication is provided only to SCells configured with PUCCH resource which are different from a Primary Cell (PCell).

3. The method according to claim 1, wherein while the PUCCH resource is configured for the SCell, the UE disables a SCell deactivation timer associated with the SCell for which the PUCCH resource is configured, or the UE sets the SCell deactivation timer associated with the SCell for which the PUCCH resource is configured to infinity.

4. The method according to claim 1, wherein the RRC signaling indicating that the PUCCH resource is de-configured from the SCell including at least one of:

an indication of the SCell for which the PUCCH resource is de-configured;

an indication of PUCCH resource de-configuration of the SCell for which the PUCCH resource is de-configured;

a value of a SCell deactivation timer associated with the SCell for which the PUCCH resource is de-configured;

or

an indication of activate or de-activate state of the SCell from which the PUCCH resource is de-configured.

5. The method according to claim 1, wherein if the indication is defined per cell, the indication indicates whether the UE activates or deactivates each SCell from which the PUCCH resource is de-configured.

6. The method according to claim 1, wherein if the indication is defined per UE, the indication indicates whether the UE activates or deactivates all SCells from which the PUCCH resource is de-configured.

7. The method according to claim 1, wherein if the indication indicates that the SCell is in activated state, the UE re-activate the SCell and starts a SCell deactivation timer associated with the SCell.

8. The method according to claim 7, wherein when the RRC signaling includes a value of the SCell deactivation timer that will be used for the SCell, the UE sets the SCell deactivation timer to the value of the SCell deactivation timer received by the RRC signaling.

9. The method according to claim 7, wherein the UE triggers Power Headroom Reporting (PHR) when the SCell is re-activated.

10. The method according to claim 1, wherein if the indication indicates that the SCell is in de-activated state, the UE deactivates the SCell and flushes all Hybrid-ARQ (HARQ) buffers associated with the SCell.

11. A User Equipment (UE) operating in a wireless communication system, the UE comprising:

a Radio Frequency (RF) module; and

a processor configure to control the RF module,

wherein the processor is configured to configure a Secondary Cell (SCell) with Physical Uplink Control Channel (PUCCH) resource, to receive a Radio Resource Control (RRC) signaling indicating that the PUCCH resource is de-configured from the SCell, wherein the RRC signaling includes an indication which indicates whether the UE activates or deactivates the SCell from which PUCCH resource is de-configured, to de-configure the PUCCH resource from the SCell, and to activate or de-activate the SCell according to the indication after the UE de-configures PUCCH from the SCell.

12. The UE according to claim 11, wherein the indication is provided only to SCells configured with PUCCH resource which are different from a Primary Cell (PCell).

13. The UE according to claim 11, wherein while the PUCCH resource is configured for the SCell, the processor disables a SCell deactivation timer associated with the SCell for which the PUCCH resource is configured, or the processor sets the SCell deactivation timer associated with the SCell for which the PUCCH resource is configured to infinity.

14. The UE according to claim 11, wherein the RRC signaling indicating that the PUCCH resource is de-configured from the SCell including at least one of:

an indication of the SCell for which the PUCCH resource is de-configured;

an indication of PUCCH resource de-configuration of the SCell for which the PUCCH resource is de-configured;

a value of a SCell deactivation timer associated with the SCell for which the PUCCH resource is de-configured;

or

an indication of activate or de-activate state of the SCell from which the PUCCH resource is de-configured.

15. The UE according to claim 11, wherein if the indication is defined per cell, the indication indicates whether the processor activates or deactivates each SCell from which the PUCCH resource is de-configured, and

if the indication is defined per UE, the indication indicates whether the processor activates or deactivates all SCells from which the PUCCH resource is de-configured.

16. The UE according to claim 11, wherein if the indication indicates that the SCell is in activated state, the processor re-activate the SCell and starts a SCell deactivation timer associated with the SCell.

17. The UE according to claim 16, wherein when the RRC signaling includes a value of the SCell deactivation timer that will be used for the SCell, the processor sets the SCell deactivation timer to the value of the SCell deactivation timer received by the RRC signaling.

18. The UE according to claim 16, wherein the processor triggers Power Headroom Reporting (PHR) when the SCell is re-activated.

19. The UE according to claim 11, wherein if the indication indicates that the SCell is in de-activated state, the processor deactivates the SCell and flushes all Hybrid-ARQ (HARQ) buffers associated with the SCell.