Method for configuring resource block for search region of downlink control channel in wireless communication system, and apparatus therefor

Patent metadata

Field	Value
Publication number	US-9544884-B2
Application number	US-201314390364-A
Country	US
Kind code	B2
Filing date	Apr 24, 2013
Priority date	Apr 24, 2012
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

The present invention relates to a method and apparatus for transmitting uplink data using a hybrid automatic repeat request (HARQ) by a terminal in a wireless communication system. More particularly, the method disclosed in the present invention comprises the steps of: establishing a first uplink-downlink configuration for a first frequency band and establishing a second uplink-downlink configuration for a second frequency band; receiving uplink control information in a downlink subframe on the first frequency band; and transmitting uplink data corresponding to the uplink control information in a specific uplink subframe linked to the downlink subframe on the basis of the first uplink-downlink configuration and second uplink-downlink configuration.

First claim

The invention claimed is:

1. A method for transmitting uplink data using Hybrid Automatic Repeat and reQuest (HARD) by a User Equipment (UE) in a wireless communication system, the method comprising:
setting a first Uplink-Downlink (UL-DL) configuration for a first frequency band and a second UL-DL configuration for a second frequency band;
receiving uplink control information in a downlink subframe of the first frequency band; and
transmitting uplink data corresponding to the uplink control information in a specific uplink subframe of the second frequency band linked to the downlink subframe of the first frequency band according to the second UL-DL configuration, when an uplink subframe, which has a subframe number corresponding to the downlink subframe according to the first UL-DL configuration, does not exist on the first frequency band within a predetermined time after the downlink subframe.

2. The method according to claim 1 , wherein the specific uplink subframe is the first uplink subframe the predetermined time after a reception time of the uplink control information among subframes of the first and second frequency bands.

3. The method according to claim 1 , wherein the first and second frequency bands are different on a single component carrier.

4. The method according to claim 1 , wherein one of the first and second frequency bands is a frequency band for uplink communication and the other frequency band is a frequency band for downlink communication.

5. The method according to claim 1 , wherein a time offset applies between the first and second UL-DL configurations.

6. The method according to claim 5 , wherein the time offset is received by one of a physical layer signal, a higher layer signal, and a system information transmission channel.

7. The method according to claim 1 , wherein the predetermined time is 4 ms.

8. The method according to claim 1 , further comprising receiving control information corresponding to the transmitted uplink data in a specific downlink subframe linked to the specific uplink subframe based on the first and second UL-DL configurations.

9. The method according to claim 8 , wherein the specific downlink subframe is the first downlink subframe a predetermined time after a transmission time of the uplink data among subframes of the first and second frequency bands.

10. The method according to claim 1 , further comprising receiving information related to transmission of the specific uplink subframe by a higher layer signal or a physical layer signal.

11. The method according to claim 1 , wherein the first and second UL-DL configurations are set to be valid only during a predetermined time interval.

12. The method according to claim 11 , wherein information about the predetermined time interval is received by a physical layer signal or a higher layer signal.

13. A User Equipment (UE) for transmitting uplink data using Hybrid Automatic Repeat and reQuest (HARD) in a wireless communication system, the UE comprising:
a Radio Frequency (RF) unit; and
a processor,
wherein the processor is configured to set a first Uplink-Downlink (UL-DL) configuration for a first frequency band and a second UL-DL configuration for a second frequency band, receive uplink control information in a downlink subframe of the first frequency band, and transmit uplink data corresponding to the uplink control information in a specific uplink subframe of the second frequency band linked to the downlink subframe of the first frequency band according to the second UL-DL configuration, when an uplink subframe, which has a subframe number corresponding to the downlink subframe according to the first UL-DL configuration, does not exist on the first frequency band within a predetermined time after the downlink subframe.

Assignees

• Lg Electronics Inc

Inventors

• Lee Seungmin
• Seo Hanbyul

Classifications

• H04W72/21 Primary

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04L1/1893

  Physical mapping arrangements (physical resource mapping in general H04L5/00) · CPC title

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title