METHOD FOR CONTROLLING ERROR FOR CARRIER AGGREGATION AND APPARATUS FOR SAME

• US 20140119339A1
• Filed: 04/23/2012
• Published: 05/01/2014
• Est. Priority Date: 04/25/2011
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yang, Suckchel, Kim, Mingyu, Ahn, Joonkui, Seo, Dongyoun
• Application Number:
  US14/114,132
• Publication Number:
  US 20140119339A1
• Time in Patent Office: Days
• US Class Current: 370/331
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1893 Physical mapping arrangements physical resource mapping in general H04L5/00
• CPC Class Codes: H04L 2001/0092 Error control systems characterised by the topology of the transmission link
• CPC Class Codes: H04L 2001/0096 Channel splitting in point-to-point links
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• 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 36/0072 of resource information of target access point

Abstract

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for carrying out a hybrid automatic repeat request (HARQ) process when a plurality of cells are configured, comprising the following steps: receiving scheduling information for transmitting data from a first cell; operating a first HARQ process from the first cell based on the scheduling information; and relaying an operation of the first HARQ process to a second HARQ process of a second cell which is different from the first cell, when a predetermined condition is satisfied.

Claims

1. A method of performing a HARQ (hybrid automatic repeat request) process by a user equipment configured of a plurality of cells in a wireless communication system, the method comprising:

receiving scheduling information to transmit data in a first cell;

operating a first HARQ process in the first cell based on the scheduling information; and

if a prescribed condition is satisfied, succeeding an operation of the first HARQ process to a second HARQ process of a second cell different from the first cell.

2. The method of claim 1, wherein the prescribed condition comprises a conversion of the first cell converted from an activated state to a deactivated state before the first HARQ process is terminated.

3. The method of claim 1, wherein the prescribed condition comprises reception of a DCI (downlink control information) format containing carrier indication information indicating the first cell when the first cell is in a deactivated state.

4. The method of claim 3, wherein the DCI format is received via a third cell different from the first cell and detected in a PDCCH (physical downlink control channel) search space for the third cell in a subframe of the third cell.

5. The method of claim 3, wherein a second HARQ process of the second cell is determined based on HARQ process number indication information in the DCI format.

6. The method of claim 3, wherein a second HARQ process of the second cell is determined based on a subframe of which the DCI format is received.

7. A user equipment of performing a HARQ (hybrid automatic repeat request) process in a state of configuring a plurality of cells in a wireless communication system, the user equipment comprising:

a radio frequency (RF) unit; and

a processor,

the processor configured to receive scheduling information to transmit data in a first cell, the processor configured to operate a first HARQ process in the first cell based on the scheduling information, if a prescribed condition is satisfied, the processor configured to succeed an operation of the first HARQ process to a second HARQ process of a second cell different from the first cell.

8. The user equipment of claim 7, wherein the prescribed condition comprises a conversion of the first cell converted from an activated state to a deactivated state before the first HARQ process is terminated.

9. The user equipment of claim 7, wherein the prescribed condition comprises reception of a DCI (downlink control information) format containing carrier indication information indicating the first cell when the first cell is in a deactivated state.

10. The user equipment of claim 9, wherein the DCI format is received via a third cell different from the first cell and detected in a PDCCH (physical downlink control channel) search space for the third cell in a subframe of the third cell.

11. The user equipment of claim 9, wherein a second HARQ process of the second cell is determined based on HARQ process number indication information in the DCI format.

12. The user equipment of claim 9, wherein a second HARQ process of the second cell is determined based on a subframe of which the DCI format is received.