Method and apparatus for performing discontinuous reception operation by connected mode user equipment in a mobile communication system

摘要

Methods and apparatuses are provided for establishing time alignment by a terminal in a mobile communication system. First information for discontinuous reception (DRX) operation is received from a base station. A downlink control channel is monitored based on the first information. Second information for identifying a dedicated preamble on the downlink control channel is received from the base station. The dedicated preamble is transmitted to the base station based on the second information. A response message to the transmitted dedicated preamble is received from the base station on a downlink shared channel. The response message includes timing adjustment information and third information for a channel quality indicator (CQI) report. Time alignment is established based on the timing adjustment information included in the response message. The CQI report is transmitted to the base station based on the third information.

主权项

1. A method for establishing time alignment by a terminal in a mobile communication system, the method comprising:
receiving, from a base station, first information for discontinuous reception (DRX) operation; monitoring a downlink control channel based on the first information; receiving, from the base station, second information for identifying a preamble on the downlink control channel; transmitting, to the base station, the preamble based on the second information; receiving, from the base station, a response message on a downlink shared channel, the response message including timing adjustment information and information for a channel quality indicator (CQI) request; establishing time alignment based on the timing adjustment information included in the response message; and transmitting, to the base station, a CQI based on the information for the CQI request.