US 10,484,142 B2Granted

Method for transmitting HARQ ACK/NACK feedback by using terminal-specific TDD frame in wireless communication system, and device therefor

AssigneeLG Electronics Inc.

InventorsDongkyu Kim, Kwangseok Noh, Hyunsoo Ko, Kukheon Choi, Sangrim Lee

Life of this patent

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Abstract

A method for a terminal transmitting a hybrid automatic repeat request (HARQ) ACK/NACK feedback by using a terminal-specific TDD frame in a wireless communication system may comprise the steps of: receiving a downlink control channel from a corresponding subframe of the terminal-specific TDD frame; and transmitting a HARQ ACK/NACK for the downlink control channel from an uplink subframe that is the most adjacent to the corresponding subframe among subframes coming after at least four subframes from the corresponding subframe.

Claims12

Dependent claims

A method for transmitting a hybrid automatic repeat request (HARQ) acknowledge (ACK)/non-acknowledge (NACK) using a time division duplex (TDD) scheme by a user equipment (UE) in a wireless communication system, the method comprising:

receiving a downlink (DL) channel in a DL subframe n−k of a first UE-specific TDD frame, wherein a beginning subframe of the first UE-specific TDD frame is configured for downlink, and a next beginning subframe of the first UE-specific TDD frame is configured as a TDD special subframe, and each of remaining subframes of the first UE-specific TDD frame is configured for downlink, wherein the DL subframe n−k is one of subframes of the first UE-specific TDD frame;
and
transmitting the HARQ ACK/NACK for the DL channel in a uplink (UL) subframe n of a second UE-specific TDD frame, wherein the UL subframe n of the second UE-specific TDD frame is located after at least four subframes from the DL subframe n−k and the DL subframe n−k is located before k subframes than the UL frame n, wherein a beginning subframe of the second UE-specific TDD frame is configured as a TDD special subframe, and a next beginning subframe of the second UE-specific TDD frame is configured for uplink, and remaining subframes of the second UE-specific TDD frame include at least one UL subframe and/or at least one DL subframe, wherein the UL subframe n is one of among the next beginning subframe of the second UE-specific TDD frame and the at least one UL subframe,
wherein the first UE-specific TDD frame and the second UE-specific TDD frame are successive, and
wherein a relation between the DL subframe n−k and the UL subframe n satisfies one of following tables which define k:
UL/DL
Subframe n
configuration
0
1
2
3
4
5
6
7
8
9
0
23,22,21,19,18,17,16,15,
14,13,12,11,10,9,8,7,6,5,4
UL/DL
Subframe n
configuration
0
1
2
3
4
5
6
7
8
9
1
22,21,18,17,16,
12,11,10,9,
15,14,13,12
8,7,6,5,4
UL/DL
Subframe n
configuration
0
1
2
3
4
5
6
7
8
9
2
21,18,17,16,
13,12,11,
8,7,6,
15,14,13
10,9,8
5,4
and
UL/DL
Subframe n
configuration
0
1
2
3
4
5
6
7
8
9
3
16,15,
13,12,
10,9,
7,6,
14,13
11,10,
8,7
5,4

79 more elements

A user equipment (UE) for transmitting a hybrid automatic repeat request (HARQ) acknowledge (ACK)/non-acknowledge (NACK) using a time division duplex (TDD) scheme in a wireless communication system, the UE comprising:

a transceiver coupled to a processor;
and
the processor configured to:
receive a downlink (DL) channel in a DL subframe n−k of a first UE-specific TDD frame, wherein a beginning subframe of the first UE-specific TDD frame is configured for downlink, and a next beginning subframe of the first UE-specific TDD frame is configured as a TDD special subframe, and each of remaining subframes of the first UE-specific TDD frame is configured for downlink, wherein the DL subframe n−k is one of subframes of the first UE-specific TDD frame, and
transmit the HARQ ACK/NACK for the DL channel in a uplink (UL) subframe of a second UE-specific TDD frame wherein the UL subframe n of the second UE-specific TDD frame is located after at least four subframes from the DL subframe n−k and the DL subframe n−k is located before k subframes than the UL frame n, wherein a beginning subframe of the second UE-specific TDD frame is configured as a TDD special subframe, and a next beginning subframe of the second UE-specific TDD frame is configured for uplink, and remaining subframes of the second UE-specific TDD frame include at least one UL subframe and/or at least one DL subframe, wherein the UL subframe n is one of among the next beginning subframe of the second UE-specific TDD frame and the at least one UL subframe,
wherein the first UE-specific TDD frame and the second UE-specific TDD frame are successive, and
wherein a relation between the DL subframe n−k and the UL subframe n satisfies one of following tables which define k:
UL/DL
Subframe n
configuration
0
1
2
3
4
5
6
7
8
9
0
23,22,21,19,18,17,16,15,14,
13,12,11,10,9,8,7,6,5,4
UL/DL
Subframe n
configuration
0
1
2
3
4
5
6
7
8
9
1
22,21,18,17,16,
12,11,10,9,
15,14,13,12
8,7,6,5,4
UL/DL
Subframe n
configuration
0
1
2
3
4
5
6
7
8
9
0
21,18,17,16,
13,12,11,
8,7,6,
15,14,13
10,9,8
5,4
and
UL/DL
Subframe n
configuration
0
1
2
3
4
5
6
7
8
9
3
16,15,14,13
13,12,11,10
10,9,8,7
7,6,5,4

77 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/748,426Filed 7 Jul 2016 · us provisional application
Priority: 31 Jul 2015
Published: US 2018/0219648 A12 Aug 2018
Granted: 19 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04L 1/1812
Automatic repetition systems, e.g. Van Duuren systems: hybrid protocols; Hybrid automatic repeat request [HARQ]
H04L 1/1854
Arrangements specially adapted for the receiver end: scheduling and prioritising arrangements
H04L 5/0055
Allocation of signalling, i.e. of overhead other than pilot signals: physical resource allocation for ACK/NACK
H04L 5/14
Arrangements affording multiple use of the transmission path: two-way operation using the same type of signal, i.e. duplex

Family

Application62/199,316Us provisional application · filed 31 Jul 2015
US 2018/0219648 A1Pre-grant publication · published 2 Aug 2018
US 10,484,142 B2This patent

From the US filing history. Foreign family members aren’t listed.

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