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

• US 10,425,941 B2
• Filed: 01/12/2016
• Issued: 09/24/2019
• 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): Kamara, Mohamed A
• Application Number:
  US15/536,879
• Publication Number:
  US 20180007693A1
• Time in Patent Office: 1,351 Days
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• 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 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 de-configuring a cell from PUCCH resource in a carrier aggregation system, the method comprising: configuring a Secondary Cell (SCell) with Physical Uplink Control Channel (PUCCH) resource; receiving a Radio Resource Control (RRC) signaling indicating that the PUCCH resource is de-configured from the SCell with the PUCCH resource; de-configuring the PUCCH resource from the SCell according to the RRC signaling; re-activating the SCell; and starting a SCell deactivation timer associated with 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 a Physical Uplink Control Channel (PUCCH) resource;

receiving Radio Resource Control (RRC) signaling informing the UE that the PUCCH resource is released from the SCell, wherein the RRC signaling includes a value of a deactivation timer associated with the SCell;

setting the deactivation timer associated with the SCell to the value included in the RRC signaling;

releasing the PUCCH resource from the SCell according to the RRC signaling;

re-activating the SCell;

starting the deactivation timer associated with the SCell; and

triggering Power Headroom Reporting (PHR) of the SCell after reactivation of the SCell.

2. The method according to claim 1, wherein while the PUCCH resource is configured for the SCell, the UE considers the SCell to be in an activated state.

3. The method according to claim 1, wherein the RRC signaling further informs the UE at least one of:

the SCell for which the PUCCH resource is released; and

the releasing the PUCCH resource from the SCell.

4. The method according to claim 1, wherein while the SCell is re-activated, the UE transmits a Sounding Reference Signal (SRS) on the SCell, reports channel status information for the SCell, monitors a Physical Downlink Control Channel (PDCCH) on the SCell, or monitors a PDCCH for a plurality of SCells.

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

a transmitter and receiver; and

a processor, operatively connected to the transmitter and receiver,

wherein the processor is configured to configure a Secondary Cell (SCell) with a Physical Uplink Control Channel (PUCCH) resource, to control the receiver to receive Radio Resource Control (RRC) signaling informing the UE that the PUCCH resource is released from the SCell, wherein the RRC signaling includes a value of a deactivation timer associated with the SCell, to set the deactivation timer associated with the SCell to the value of the RRC signaling, to release the PUCCH resource from the SCell according to the RRC signaling, to re-activate the SCell, to start the deactivation timer associated with the SCell, and to trigger Power Headroom Reporting (PHR) of the SCell after reactivation of the SCell.

6. The UE according to claim 5, wherein while the PUCCH resource is configured for the SCell, the UE considers the SCell to be in an activated state.

7. The UE according to claim 5, wherein the RRC signaling further informs the UE at least one of:

the SCell for which the PUCCH resource is released; and

the releasing the PUCCH resource from the SCell.

8. The UE according to claim 5, wherein when the processor re-activates the SCell, the processor is configured to control the transmitter to transmit a Sounding Reference Signal (SRS) on the SCell, report channel status information for the SCell, monitor a Physical Downlink Control Channel (PDCCH) on the SCell, or monitor a PDCCH for a plurality of SCells.