# US RE48,741 E1 · Method and apparatus for transmitting control information in a wireless communication system

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- Number: US RE48,741 E1
- Document ID: USRE48741E1
- Status: Granted
- Kind: E1
- Application number: 15/722,284
- Filed: 2017-10-02
- Granted: 2021-09-14
- Earliest claimed: 2010-01-17
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Seung Hee Han; Jae Hoon Chung; Sung Ho Moon; Moon Il Lee
- Web page: https://patentgrep.com/patent/USRE48741E1

## CPC

- H04W 72/0413
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/0026: {Division using four or more dimensions, e.g. beam steering or quasi-co-location [QCL]}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 27/2636: {with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]}
- H04L 27/2697: {in combination with other modulation techniques}
- H04W 72/02: Selection of wireless resources by user or terminal
- H04W 4/00: Services specially adapted for wireless communication networks; Facilities therefor
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for transmitting control signal via a PUCCH in a wireless communication system, and to an apparatus for the method, wherein the method comprises the following steps: joint-coding a plurality of pieces of control information to obtain a single codeword; obtaining a first modulation symbol sequence from the single codeword; obtaining, from the first modulation symbol sequence, a plurality of second modulation symbol sequences corresponding to each slot in the PUCCH; cyclically shifting the plurality of second modulation symbol sequences in a time domain to obtain a plurality of third modulation symbol sequences; performing a discrete Fourier transform (DFT) precoding process on the plurality of third modulation symbol sequences to obtain a plurality of complex symbol sequences in a frequency domain; and transmitting the plurality of complex symbol sequences via the PUCCH.

## Claims

### Claim 1

A method for receiving control information through a physical uplink control channel (PUCCH) at a base station (BS) in a wireless communication system, the method comprising:
transmitting a Radio Resource Control (RRC) signal including indicating PUCCH resource information; and
receiving a first and second plurality of sequences, which is discrete Fourier transformed (DFTed) and generated by block-wise multiplication of first N1/2 modulation symbols of N1 modulation symbols by each element of a first orthogonal code, in a subframe using the PUCCH resource information,
wherein each sequence of the first plurality of sequences is mapped to a corresponding single carrier frequency division multiple access (SC-FDMA) symbol in a 1st slot of the subframe, and each sequence of the second plurality of sequences is mapped to a corresponding SC-FDMA symbol in a 2nd slot of the subframe, wherein each sequence of the first and second plurality of sequences is discrete fourier transformed, wherein the first plurality of sequences are generated by block-wise multiplication of first N1/2 modulation symbols of N1 modulation symbols by each element of a first orthogonal code, wherein the second plurality of sequences are generated by block-wise multiplication of second N1/2 modulation symbols of the N1 modulation symbols by each element of a second orthogonal code,; and
receiving a second plurality of sequences, which is DFTed and generated by block-wise multiplication of second N1/2 modulation symbols of the N1 modulation symbols by each element of a second orthogonal code, in the subframe using the PUCCH resource information,
wherein each sequence of the second plurality of sequences is mapped to a corresponding SC-FDMA symbol in a 2nd slot of the subframe, and
wherein the N1 modulation symbols are generated by modulation of control information, N1 being is twice of a the number of subcarriers in one resource block (RB).

### Claim 2 (depends on 1)

The method of claim 1, wherein the first N1/2 modulation symbols are the first half of the N1 modulation symbols, and the second N1/2 modulation symbols are the second half of the N1 modulation symbols.

### Claim 3 (depends on 1)

The method of claim 1, wherein the first orthogonal code and the second orthogonal code are independently determined for each slot.

### Claim 4 (depends on 1)

The method of claim 1, wherein indexes of the SC-FDMA symbols, through which the first and second plurality of sequences are transmitted, in each slot are 0, 2, 3, 4 and 6 in a normal cyclic prefix (CP) case and 0, 1, 2, 4 and 5 in an extended CP case, and the first and second orthogonal codes are selected given per slot from the following table:
[1 1 1 1 1]
[1 ej2π/5 ej4π/5 ej6π/5 ej8π/5]
[1 ej4π/5 ej8π/5 ej2π/5 ej6π/5]
[1 ej6π/5 ej2π/5 ej8π/5 ej4π/5]
[1 ej8π/5 ej6π/5 ej4π/5 ej2π/5].

### Claim 5 (depends on 1)

The method of claim 1, wherein the control information bits include includes multiple ACK/NACK information for a plurality of downlink data.

### Claim 6

A base station (BS) configured to transmit control information through a PUCCH in a wireless communication system, the BS comprising:
a radio frequency (RF) unit; and
a processor,
wherein the processor is configured to:
transmit a Radio Resource Control (RRC) signal including indicating PUCCH resource information, and
receive a first and second plurality of sequences which is discrete Fourier transformed (DFTed) and generated by block-wise multiplication of first N1/2 modulation symbols of N1 modulation symbols by each element of a first orthogonal code in a subframe using the PUCCH resource information, wherein each sequence of the first plurality of sequences is mapped to a corresponding single carrier frequency division multiple access (SC-FDMA) symbol in a 1st slot of the subframe, and each sequence of the second plurality of sequences is mapped to a corresponding SC-FDMA symbol in a 2nd slot of the subframe, wherein each sequence of the first and second plurality of sequences is discrete fourier transformed, wherein the first plurality of sequences are generated by block-wise multiplication of first N1/2 modulation symbols of N1 modulation symbols by each element of a first orthogonal code, wherein the second plurality of sequences are generated by block-wise multiplication of second N1/2 modulation symbols of the N1 modulation symbols by each element of a second orthogonal code, and
receive a second plurality of sequences which is DFTed and generated by block-wise multiplication of second N1/2 modulation symbols of the N1 modulation symbols by each element of a second orthogonal code, in the subframe using the PUCCH resource information,
wherein each sequence of the second plurality of sequences is mapped to a corresponding SC-FDMA symbols in a 2nd slot of the subframe, and
wherein the N1 modulation symbols are generated by modulation of control information, N1 being is twice of a the number of subcarriers in one resource block (RB).

### Claim 7 (depends on 6)

The BS of claim 6, wherein the first N1/2 modulation symbols are the first half of the N1 modulation symbols, and the second N1/2 modulation symbols are the second half of the N1 modulation symbols.

### Claim 8 (depends on 6)

The BS of claim 6, wherein the first orthogonal code and the second orthogonal code are independently determined for each slot.

### Claim 9 (depends on 6)

The BS of claim 6, wherein indexes of the SC-FDMA symbols, through which the first and second plurality of sequences are transmitted, in each slot are 0, 2, 3, 4 and 6 in a normal cyclic prefix (CP) case and 0, 1, 2, 4 and 5 in an extended CP case, and the first and second orthogonal codes are selected given per slot from the following table:
[1 1 1 1 1]
[1 ej2π/5 ej4π/5 ej6π/5 ej8π/5]
[1 ej4π/5 ej8π/5 ej2π/5 ej6π/5]
[1 ej6π/5 ej2π/5 ej8π/5 ej4π/5]
[1 ej8π/5 ej6π/5 ej4π/5 ej2π/5].

### Claim 10 (depends on 6)

The BS of claim 6, wherein the control information bits include includes multiple ACK/NACK information for a plurality of downlink data.