# US 2014/0153449 A1 · Method and device for transmitting ack/nack in wireless communication system

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- Number: US 2014/0153449 A1
- Document ID: US20140153449A1
- Status: Published application
- Kind: A1
- Application number: 14/004,795
- Filed: 2012-03-14
- Published: 2014-06-05
- Earliest claimed: 2011-03-14
- Assignees: LG Electronics Inc.
- Inventors: Dong Youn Seo; Min Gyu Kim; Suck Chel Yang; Joon Kui Ahn
- Web page: https://patentgrep.com/patent/US20140153449A1

## CPC

- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 1/1607: Details of the supervisory signal
- H04L 1/1854: {Scheduling and prioritising arrangements}
- H04L 5/14: Two-way operation using the same type of signal, i.e. duplex
- H04L 5/26: combined with the use of different frequencies
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Provided are a method and a device for transmitting an acknowledgement/not-acknowledgement (ACK/NACK) of a terminal which is set with a plurality of serving cells. The method comprises the steps of: receiving data in a subframe n of a second serving cell; and transmitting an ACK/NACK signal for the data in a subframe n+kSCC(n) of a first serving cell connected to the subframe n of the second serving cell, wherein the first serving cell is a primary cell for the terminal to execute an initial connection establishment procedure or a connection reestablishment procedure, and uses a frequency division duplex (FDD) wireless frame, the second serving cell is a secondary cell allocated to the terminal in addition to the primary cell, and uses a time division duplex (TDD) wireless frame, and the kSCC(n) is a previously determined value.

## Claims

### Claim 1

A method for transmitting an acknowledgement/not-acknowledgement (ACK/NACK) of User Equipment (UE) in which a plurality of serving cells has been configured, the method comprising:
receiving data in a subframe n of a second serving cell; and
transmitting an ACK/NACK signal for the data in a subframe n+kSCC(n) of a first serving cell which is associated with the subframe n of the second serving cell,
wherein the first serving cell is a primary cell in which the UE performs an initial connection establishment procedure or connection re-establishment procedure with a base station, and the first serving cell uses a Frequency Division Duplex (FDD) radio frame,
the second serving cell is a secondary cell additionally allocated to the UE in addition to the primary cell, and the second serving cell uses a Time Division Duplex (TDD) radio frame, and
the kSCC(n) is a predetermined value.

### Claim 2 (depends on 1)

The method of claim 1, wherein the kSCC(n) is a value identical with ACK/NACK timing in the first serving cell and is four subframes.

### Claim 3 (depends on 1)

The method of claim 1, further comprising:
receiving data in a subframe n of the first serving cell; and
transmitting an ACK/NACK signal in the subframe n+kPCC(n) of the first serving cell which is associated with the subframe n of the first serving cell,
wherein the subframe n+kPCC(n) is an uplink subframe spaced apart from the subframe n of the first serving cell by four subframes.

### Claim 4 (depends on 3)

The method of claim 3, further comprising:
receiving a first downlink grant for the data, received in the subframe n of the first serving cell, in the first serving cell; and
receiving a second downlink grant for the data received in the subframe n of the second serving cell, in the first serving cell,
wherein a number of bits of the first downlink grant is identical with a number of bits of the second downlink grant.

### Claim 5 (depends on 1)

The method of claim 1, further comprising:
receiving uplink (UL)-downlink (DL) configuration information about the TDD radio frame used in the second serving cell through the first serving cell.

### Claim 6 (depends on 1)

The method of claim 1, wherein the UL-DL configuration information indicates any one of UL-DL configurations shown in a table below.
Uplink-
Downlink-
downlink
to-Uplink
config-
Switch-point
Subframe number n
uration
periodicity
0
1
2
3
4
5
6
7
8
9
0
5
ms
D
S
U
U
U
D
S
U
U
U
1
5
ms
D
S
U
U
D
D
S
U
U
D
2
5
ms
D
S
U
D
D
D
S
U
D
D
3
10
ms
D
S
U
U
U
D
D
D
D
D
4
10
ms
D
S
U
U
D
D
D
D
D
D
5
10
ms
D
S
U
D
D
D
D
D
D
D
6
5
ms
D
S
U
U
U
D
S
U
U
D

### Claim 7 (depends on 1)

The method of claim 1, further comprising:
receiving data in a subframe n of a third serving cell; and
transmitting an ACK/NACK signal for data, received in the third serving cell, in the subframe kSCC(n) of the first serving cell which is associated with the subframe n of the third serving cell,
wherein the third serving cell is a secondary cell additionally allocated to the UE in addition to the primary cell, and the third serving cell uses a TDD radio frame.

### Claim 8

A method for transmitting an acknowledgement/not-acknowledgement (ACK/NACK) of UE in which a plurality of serving cells has been configured, the method comprising:
receiving data in a subframe n−k of a second serving cell; and
transmitting an ACK/NACK signal for the data in a subframe n of a first serving cell which is associated with the subframe n−k of the second serving cell,
wherein the first serving cell is a primary cell in which the UE performs an initial connection establishment procedure or connection re-establishment procedure with a base station, and the first serving cell uses a Frequency Division Duplex (FDD) radio frame,
the second serving cell is a secondary cell additionally allocated to the UE in addition to the primary cell, and the second serving cell uses a Time Division Duplex (TDD) radio frame, and
in the subframe n−k, the k is determined to be a value identical with ACK/NACK timing of the second serving cell.

### Claim 9 (depends on 8)

The method of claim 8, wherein the k value is given as in a table below.
UL-DL
Config-
subframe n
uration
0
1
2
3
4
5
6
7
8
9
0
—
—
6
—
4
—
—
6
—
4
1
—
—
7, 6
4
—
—
—
7, 6
4
—
2
—
—
8, 7,
—
—
—
—
8, 7,
—
—
4, 6
4, 6
3
—
—
7, 6, 11
6, 5
5, 4
—
—
—
—
—
4
—
—
12, 8,
6, 5,
—
—
—
—
—
—
7, 11
4, 7
5
—
—
13, 12, 9,
—
—
—
—
—
—
—
8, 7, 5,
4, 11, 6
6
—
—
7
7
5
—
—
7
7
—

### Claim 10 (depends on 8)

The method of claim 8, further comprising:
receiving uplink (UL)-downlink (DL) configuration information about the TDD radio frame used in the second serving cell through the first serving cell

### Claim 11 (depends on 8)

The method of claim 8, further comprising:
receiving data in a subframe n−k of a third serving cell; and
transmitting an ACK/NACK signal for the data in the subframe n of the first serving cell which is associated with the subframe n−k of the third serving cell,
wherein the third serving cell is a secondary cell additionally allocated to the UE in addition to the primary cell, and the third serving cell uses a TDD radio frame.

### Claim 12

User Equipment (UE), comprising:
a Radio Frequency (RF) unit transmitting and receiving radio signals; and
a processor connected to the RF unit,
wherein the processor receives data in a subframe n of a second serving cell and transmits an ACK/NACK signal for the data in a subframe n+kSCC(n) of a first serving cell which is associated with the subframe n of the second serving cell,
the first serving cell is a primary cell in which the UE performs an initial connection establishment procedure or connection re-establishment procedure with a base station, and the first serving cell uses a Frequency Division Duplex (FDD) radio frame,
the second serving cell is a secondary cell additionally allocated in addition to the primary cell, and the second serving cell uses a Time Division Duplex (TDD) radio frame, and
the kSCC(n) is a predetermined value.

### Claim 13 (depends on 12)

The UE d of claim 12, wherein the kSCC(n) is a value identical with ACK/NACK timing in the first serving cell and is four subframes.