METHOD FOR RANDOM ACCESS

摘要

A random access method is provided to prevent the HARQ acknowledgement channel collision generated because a base station does not distinguish a terminal using the same preamble when the terminal performs the random access procedure to the base station. A base station transmits a response message to a downlink control information and preamble to a mobile station(S102,S103). The mobile station transmits an access request message to the base station(S104). The base station transmits an HARQ acknowledgement message to the mobile station(S105), and then assigns an acknowledgement channel to the mobile station(106). The base station transmits the downlink control information and a connection establishment message to the mobile station(S107,S108). The mobile station transmits the HARQ acknowledgement message to the base station through the acknowledgement channel(S109).