Method and apparatus for transmitiing ack/nack

Abstract

A technology enabling a terminal to receive acknowledgement (ACK)/negative ACK (NACK) information about data transmitted from the terminal is provided. The method includes receiving cyclic shift information for a reference signal from the base station; transmitting, to the base station, the data and a reference signal which is cyclic-shifted using a cyclic shift value, the cyclic shift value being determined based on a dynamic cyclic shift value mapped one-to-one to the cyclic shift information for the reference signal; and receiving, from the base station, the ACK/NACK information about the transmitted data through a radio resource of a downlink channel, the radio resource of the downlink channel being identified based on a modifier mapped one-to-one to the cyclic shift information for the reference signal.

What is claimed is: 
     
         1 . A method of receiving acknowledgement (ACK)/negative ACK (NACK) information about data transmitted to a base station in a terminal of a wireless communication system, the method comprising:
 receiving cyclic shift information for a reference signal from the base station;   transmitting, to the base station, the data and a reference signal which is cyclic-shifted using a cyclic shift value, the cyclic shift value being determined based on a dynamic cyclic shift value mapped one-to-one to the cyclic shift information for the reference signal; and   receiving, from the base station, the ACK/NACK information about the transmitted data through a radio resource of a downlink channel, the radio resource of the downlink channel being identified based on a modifier mapped one-to-one to the cyclic shift information for the reference signal.   
     
     
         2 . The method of  claim 1 , wherein the cyclic shift information for the reference signal is mapped one-to-one to the dynamic cyclic shift value according to Table 1. 
       
         
           
                 
                 
                 
               
                     
                   TABLE 1 
                 
                     
                     
                 
                     
                   Cyclic shift information 
                   Dynamic cyclic 
                 
                     
                   for reference signal 
                   shift value 
                 
                     
                     
                 
                     
                 
                 
                 
                 
               
                     
                   000 
                   0 
                 
                     
                   001 
                   6 
                 
                     
                   010 
                   3 
                 
                     
                   011 
                   4 
                 
                     
                   100 
                   2 
                 
                     
                   101 
                   8 
                 
                     
                   110 
                   10 
                 
                     
                   111 
                   9