Method and apparatus for transmitting HARQ acknowledgement in OFDM radio communication system

Patent metadata

Field	Value
Publication number	US-9350497-B2
Application number	US-201213552125-A
Country	US
Kind code	B2
Filing date	Jul 18, 2012
Priority date	Jul 18, 2011
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

A Physical Hybrid Automatic Repeat reQuest (ARQ) Indicator CHannel (PHICH) transmission method performed by a base station is provided. The method includes determining whether any PHICH resources are allocated to a current subframe; allocating, upon a determination that the current subframe does not have any PHICH resources allocated, a new PHICH resource; and transmitting a PHICH through the allocated new PHICH resource.

First claim

What is claimed is:

1. A Physical Hybrid Automatic Repeat reQuest (HARQ) Indicator CHannel (PHICH) transmission method performed by a base station, comprising:
receiving two or more physical Uplink Shared Channels (PUSCHs) from a User Equipment (UE) using two or more carriers, the two or more PUSCHs corresponding to different Time Division Duplexing (TDD) configurations;
generating two or more HARQ response information corresponding to the two or more PUSCHs;
determining whether a PHICH resource is allocated to each current subframe, based on the TDD configurations;
allocating a new PHICH resource at a current subframe to which the PHICH resource is not allocated; and
transmitting the PHICHs through the allocated PHICH resources for the two or more HARQ response information.

2. The PHICH transmission method of claim 1 , wherein allocating the new PHICH resource includes configuring, as the allocated new PHICH resource, a resource that is allocated for a Physical Downlink Control Channel (PDCCH) but that is not used for PDCCH transmission.

3. The PHICH transmission method of claim 1 , wherein allocating the new PHICH resource includes configuring, as the allocated new PHICH resource, a region immediately following a common control channel transmission region.

4. The PHICH transmission method of claim 1 , wherein allocating the new PHICH resource includes configuring a part of a terminal-specific control channel as the allocated new PHICH resource.

5. A Physical Hybrid Automatic Repeat reQuest (HARQ) Indicator CHannel (PHICH) reception method performed by a terminal, comprising:
transmitting two or more physical Uplink Shared Channels (PUSCHs) using two or more carriers, the two or more PUSCHs corresponding to different Time Division Duplexing (TDD) configurations;
determining whether a PHICH resource is allocated to each current subframe, based on the TDD configurations;
identifying a new PHICH resource at a current subframe to which the PHICH resource is not allocated; and
receiving the PHICHs through the allocated and identified PHICH resources for the two or more HARQ response information.

6. The PHICH reception method of claim 5 , wherein the new PHICH resource includes a resource that is allocated for a Physical Downlink Control CHannel (PDCCH) but that is not used for PDCCH transmission.

7. The PHICH reception method of claim 5 , wherein the new PHICH resource includes a region immediately following a common control channel transmission region.

8. The PHICH reception method of claim 5 , wherein the new PHICH resource includes a part of a terminal-specific control channel.

9. A base station for transmitting a Physical Hybrid Automatic Repeat reQuest (HARQ) Indicator CHannel (PHICH), the base station comprising:
a controller configured to:
receive two or more physical Uplink Shared Channels (PUSCHs) from a User Equipment (UE) using two or more carriers, the two or more PUSCHs corresponding to different Time Division Duplexing (TDD) configurations;
generate two or more HARQ response information corresponding to the two or more PUSCHs; and
determine whether a PHICH resource is allocated to each current subframe, based on the TDD configurations;

a selector configured to allocate a new PHICH resource at a current subframe to which the PHICH resource is not allocated; and
a transmitter configured to transmit the PHICHs through the allocated PHICH resources for the two or more HARQ response information.

10. The base station of claim 9 , wherein the selector configures, as the PHICH resource, a resource that is allocated for a Physical Downlink Control CHannel (PDCCH) but not used for PDCCH transmission, or a resource that has a lowest probability of PDCCH transmission.

11. The base station of claim 9 , wherein the selector configures, as the PHICH resource, a region that immediately follows a common control channel transmission region.

12. The base station of claim 9 , wherein the selector configures a part of a terminal-specific control channel as the PHICH resource.

Assignees

• Ji Hyoungju
• Han Jinkyu
• Kim Youngbum
• Cho Joonyoung
• Choi Seunghoon
• Samsung Electronics Co Ltd

Inventors

• Ji Hyoungju
• Han Jinkyu
• Kim Youngbum
• Cho Joonyoung
• Choi Seunghoon

Classifications

• H04L1/0027

  Scheduling of signalling, e.g. occurrence thereof · CPC title

• H04L5/0053

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

• H04L1/0026

  Transmission of channel quality indication · CPC title

• H04L5/0055

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

• H04L1/1854 Primary

  Scheduling and prioritising arrangements · CPC title