METHOD FOR TRANSMITTING UPLINK CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS USE CHANGE OF RADIO RESOURCES, AND APPARATUS THEREFOR

• US 20160374071A1
• Filed: 03/12/2015
• Published: 12/22/2016
• 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
• Granted Patent: US 10,674,487 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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) in a wireless communication system supporting reconfiguration of a radio resource, the method comprising:

receiving offset information for a second Physical Uplink Control Channel (PUCCH) resource region configured based on a first PUCCH resource region for a first type subframe, the second PUCCH being associated with a second type subframe and a third type subframe; and

transmitting, to a base station, Acknowledgement/Negative-ACK (ACK/NACK) for at least one downlink subframe using the second PUCCH resource region, the second PUCCH resource region being designated according to the offset information,

wherein the first type subframe has the same HARQ timing for an eIMTA (enhanced interference management and traffic adaptation) UE and a non-eIMTA (non-enhanced interference management and traffic adaptation) UE and has 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 changeable configuration of the radio resource.

2. The method according to claim 1, wherein the offset information indicates whether an offset for the second PUCCH resource region is indicated through higher layer signaling or whether the second PUCCH resource region is defined according to a predetermined configuration.

3. The method according to claim 2, wherein the offset information is presented using a 1-bit indicator.

4. The method according to claim 1, wherein the offset information contains an offset defined as an optional information element,

wherein the second PUCCH resource region is indicated through higher layer signaling when the offset is defined, or is determined according to a predetermined value when the offset is not defined.

5. The method according to claim 1, wherein the offset information contains a default value predefined for the second PUCCH resource region,

wherein, when an offset for the second PUCCH resource region is not indicated through higher layer signaling, the default value is defined as the offset for the second PUCCH resource region.

6. The method according to claim 5, wherein the predefined default value is defined as a total sum of control channel elements for the downlink subframe and a special subframe among first type subframes operatively connected with the first PUCCH resource region.

7. A method for transmitting an uplink control channel of a user equipment (UE) in a wireless communication system supporting carrier aggregation and reconfiguration of a radio resource, the method comprising:

determining, based on an eIMTA (enhanced interference management and traffic adaptation) configuration for a primary cell and a secondary cell, a Physical Uplink Control Channel (PUCCH) resource allocation scheme for the secondary cell; and

transmitting the uplink control channel using a PUCCH resource determined according to the PUCCH resource allocation scheme.

8. A user equipment (UE) for transmitting an uplink control channel in a wireless communication system supporting reconfiguration of a radio resource, the UE comprising:

a radio frequency unit; and

a processor,

wherein the processor is configured to;

receive offset information for a second Physical Uplink Control Channel (PUCCH) resource region configured based on a first PUCCH resource region for a first type subframe, the second PUCCH being associated with a second type subframe and a third type subframe; and

transmit, to a base station, Acknowledgement/Negative-ACK (ACK/NACK) for at least one downlink subframe using the second PUCCH resource region, the second PUCCH resource region being designated according to the offset information,

wherein the first type subframe has the same HARQ timing for an eIMTA (enhanced interference management and traffic adaptation) UE and a non-eIMTA (non-enhanced interference management and traffic adaptation) UE and has 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 changeable configuration of the radio resource.