Method for transmitting uplink control channel in wireless communication system that supports use change of radio resources, and apparatus therefor

• US 10,674,487 B2
• Filed: 03/12/2015
• Issued: 06/02/2020
• Est. Priority Date: 03/12/2014
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Seungmin, Seo, Hanbyul, Seo, Inkwon, Yang, Suckchel, Chae, Hyukjin
• Primary Examiner(s): Oh, Andrew C
• Application Number:
  US15/122,253
• Publication Number:
  US 20160374071A1
• Time in Patent Office: 1,909 Days
• Field of Search: None
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

The present invention relates to a method and an apparatus for transmitting an uplink control channel of a terminal in a wireless communication system that supports a use change of radio resources. Specifically, the method comprises the steps of: receiving offset information for a second physical uplink control channel (PUCCH) resource region associated with a second type subframe and a third type subframe, the second PUCCH resource region being set on the basis of a first PUCCH resource region for a first type subframe; and transmitting, to a base station, an acknowledgement/negative-ACK (ACK/NACK) for at least one downlink subframe, using the second PUCCH resource region designated according to the offset information.

Claims

1. A method for transmitting an uplink control channel of a user equipment (UE) connected with Primary Cell (PCell) and Secondary Cell (SCell) in a wireless communication system, the method comprising:

receiving, from the PCell, 1 bit information for determining an offset value from a first Physical Uplink Control Channel (PUCCH) resource region for a first type subframe to a second PUCCH resource region for a second type subframe and a third type subframe; and

transmitting, to the PCell, an Acknowledgement/Negative-Acknowledgement (ACK/NACK) related to the SCell for at least one downlink subframe in the second PUCCH resource region determined based on the 1 bit information,

wherein the SCell supports a reconfiguration of a radio resource,

wherein the second PUCCH resource region is determined based on the offset value obtained via Radio Resource Control (RRC) signaling when the 1 bit information includes a first value,

wherein the second PUCCH resource region is determined based on the offset value obtained based on a total sum of control channel elements (CCEs) for downlink and special subframes when the 1 bit information includes a second value,

wherein the first type subframe has same Hybrid Automatic Repeat Request (HARQ) timing for an enhanced interference management and traffic adaptation (eIMTA) UE and a non-eIMTA UE and has a fixed configuration of the radio resource,

wherein the second type subframe has different HARQ timing for the eIMTA UE and the non-eIMTA UE and has the fixed configuration of the radio resource,

wherein the third type subframe has a changeable configuration of the radio resource, and

wherein bits of the ACK/NACK are ordered based on whether the PCell supports the reconfiguration of the radio resource.

2. The method of claim 1, wherein the bits of the ACK/NACK are ordered based on <

Table A>

when the PCell supports the reconfiguration of the radio resource,

3. The method of claim 1, wherein the bits of the ACK/NACK are ordered based on <

Table B>

when the PCell supports the reconfiguration of the radio resource,

4. A user equipment (UE) connected with Primary Cell (PCell) and Secondary Cell (SCell) for transmitting an uplink control channel in a wireless communication system, the UE comprising:

a transceiver; and

a processor,

wherein the processor is configured to;

control the transceiver to receive, from the PCell, 1 bit information for determining an offset value from a first Physical Uplink Control Channel (PUCCH) resource region for a first type subframe to a second PUCCH resource region for a second type subframe and a third type subframe, and

control the transceiver to transmit, to the PCell, an Acknowledgement/Negative-Acknowledgement (ACK/NACK) related to the SCell for at least one downlink subframe in the second PUCCH resource region determined based on the 1 bit information,

wherein the SCell supports a reconfiguration of a radio resource,

wherein the second PUCCH resource region is determined based on the offset value obtained via Radio Resource Control (RRC) signaling when the 1 bit information includes a first value,

wherein the second PUCCH resource region is determined based on the offset value obtained based on a total sum of control channel elements (CCEs) for downlink and special subframes when the 1 bit information includes a second value,

wherein the first type subframe has same Hybrid Automatic Repeat Request (HARQ) timing for an enhanced interference management and traffic adaptation (eIMTA) UE and a non-eIMTA UE and has a fixed configuration of the radio resource,

wherein the second type subframe has different HARQ timing for the eIMTA UE and the non-eIMTA UE and has the fixed configuration of the radio resource,

wherein the third type subframe has a changeable configuration of the radio resource, and

wherein bits of the ACK/NACK are ordered based on whether the PCell supports the reconfiguration of the radio resource.

5. The UE of claim 4, wherein the bits of the ACK/NACK are ordered based on <

Table A>

when the PCell supports the reconfiguration of the radio resource,

6. The UE of claim 4, wherein the bits of the ACK/NACK are ordered based on <

Table B>

when the PCell supports the reconfiguration of the radio resource,