US2009055703A1

5G,4G

Title

APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING THE HYBRID-ARQ ACK/NACK SIGNAL IN MOBILE COMMUNICATION SYSTEM

Application Number:

US20080195865

Publication Date:

26-02-2009

Current Assignee:

Family ID:

Application Date:

21-08-2008

Declaring Company:

Publication Country:

US

Priority Date:

21-08-2007

Title

APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING THE HYBRID-ARQ ACK/NACK SIGNAL IN MOBILE COMMUNICATION SYSTEM

Application Number:

US20080195865

Family ID:

Publication Country:

US

Publication Date:

26-02-2009

Application Date:

21-08-2008

Priority Date:

21-08-2007

Current Assignee:

Declaring Company:

Abstract  Abstract

An apparatus and method for transmitting/receiving a Hybrid Automatic Repeat reQuest (HARQ) Acknowledge/Negative acknowledge (ACK/NACK) signal in a mobile communication system. The apparatus and method distribute a CDM segment to which an ACK/NACK signal is mapped in the frequency domain of an OFDM symbol and repeatedly transmits the CDM segment thereby providing diversity gain in the time-frequency domain. Further the apparatus and method provide a mapping rule for distributing transmit power between OFDM symbols to which the ACK/NACK signal is mapped and transmitted thereby preventing a particular OFDM symbol power-overload and thus contributing to improvement of the entire system performance.