# US 8,787,265 B2 · Method of transmitting and receiving acknowledgment signal in a wireless communication system

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- Number: US 8,787,265 B2
- Document ID: US8787265B2
- Status: Granted
- Kind: B2
- Application number: 11/740,271
- Filed: 2007-04-25
- Published: 2007-12-13
- Granted: 2014-07-22
- Earliest claimed: 2006-04-25
- Assignees: LG Electronics Inc.
- Applicants: Young Cheul Yoon; Li-Hsiang Sun; Sang Gook Kim; Suk Woo Lee; Shu Wang
- Inventors: Young Cheul Yoon; Li-Hsiang Sun; Sang Gook Kim; Suk Woo Lee; Shu Wang
- Web page: https://patentgrep.com/patent/US8787265B2

## 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 1/1887: {Scheduling and prioritising arrangements}
- H04L 2001/0092: {Error control systems characterised by the topology of the transmission link}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A method of receiving an acknowledgement (ACK) signal from at least one access terminal (AT) in a wireless communication system is disclosed. More specifically, the method includes transmitting at least one packet via a packet data channel from an access network (AN), receiving at least one ACK signal from the at least one AT using same channelization resources, wherein each AT is assigned a code specific to each AT, and identifying the ACK signal corresponding to the transmitted packet from the received at least one ACK signal.

## Claims

### Claim 1

A method of receiving an acknowledgement (ACK)/negative acknowledgement (NAK) signal at a base station (BS) in a wireless communication system using orthogonal frequency tones, the method comprising:
transmitting, by the BS, a data packet to a mobile station;
receiving, by the BS, a first ACK/NAK signal via a first set of orthogonal frequency tones from the mobile station; and
receiving, by the BS, a second ACK/NAK signal via a second set of orthogonal frequency tones from the mobile station,
wherein the first ACK/NAK signal and the second ACK/NAK signal carry the same information and correspond to the data packet,
wherein the first set of orthogonal frequency tones and the second set of orthogonal frequency tones are shared between a plurality of mobile stations for ACK/NAK signal transmission by using a plurality of sequences corresponding to the plurality of mobile stations, and
wherein the first set of orthogonal frequency tones is different from the second set of orthogonal frequency tones over two transmission instants.

### Claim 2 (depends on 1)

The method of claim 1, wherein the plurality of sequences are a plurality of scrambling sequences.

### Claim 3 (depends on 2)

The method of claim 2, wherein the plurality of scrambling sequences are pseudo noise sequence codes.

### Claim 4 (depends on 1)

The method of claim 1, wherein the plurality of sequences are generated from an origin.

### Claim 5

A method of transmitting an acknowledgement (ACK)/negative acknowledgment (NAK) signal at a mobile station in a wireless communication system using orthogonal frequency tones, the method comprising:
receiving, by the mobile station, a data packet;
transmitting, by the mobile station, a first ACK/NAK signal via a first set of orthogonal frequency tones; and
transmitting, by the mobile station, a second ACK/NAK signal via a second set of orthogonal frequency tones,
wherein the first ACK/NAK signal and the second ACK/NAK signal carry the same information and correspond to the data packet,
wherein the first set of orthogonal frequency tones and the second set of orthogonal frequency tones are shared between a plurality of mobile stations for ACK/NAK signal transmission by using a plurality of sequences corresponding to the plurality of mobile stations, and
wherein the first set of orthogonal frequency tones is different from the second set of orthogonal frequency tones over two transmission instants.

### Claim 6 (depends on 5)

The method of claim 5, wherein the plurality of sequences are a plurality of scrambling sequences.

### Claim 7 (depends on 6)

The method of claim 6, wherein the plurality of scrambling sequences are pseudo noise sequence codes.

### Claim 8 (depends on 5)

The method of claim 5, wherein the plurality of sequences are generated from an origin.