APPARATUS AND A METHOD FOR TRANSMITTING REVERSE PACKET DATA IN A MOBILE COMMUNICATION SYSTEM, ESPECIALLY CONCERNED WITH EFFICIENTLY EXECUTING THE TRANSMISSION OF REVERSE PACKET DATA

摘要

PURPOSE: An apparatus and a method for transmitting reverse packet data in a mobile communication system are provided to improve the reliability of ACK/NACK bits by controlling the Tx power of a response channel, on which ACK/NACK bits are transmitted. CONSTITUTION: A response signal transmitter is comprised of an error detection part(401), a spreader(402), a Tx power controller(403), an ACK/NACK transmitting part(404). The error detection part(401) receives packet data through a radio channel and detects an error from the received packet data. The error detection part(401) creates and outputs an ACK bit if an error is not detected, and creates and outputs an NACK bit if an error is detected. The spreader(402) receives the ACK or NACK bit and executes spreading in order to transmit it to the radio channel. The Tx power controller(403) controls and outputs the spread ACK or NACK bit with a power value corresponding to the data rate of a packet data channel. The ACK/NACK transmitting part(404) transmits the ACK or NACK bit, outputted from the Tx power controller(403), through the radio channel.