A METHOD FOR RANDOM ACCESS IN CELLULAR SYSTEM

摘要

A random access method in a cellular system is provided to integrate a process of configuring and transferring a CCCH(Common Control Channel) message in an RRC(Radio Resource Control) of a terminal and a process of configuring and transferring an MAC(Medium Access Control) control primitive into one, thereby simplifying RRC control operations of the terminal. An RRC(Radio Resource Control) layer(11) of a terminal(10) transfers a control primitive and an RRC connection request message to an MAC(Medium Access Control) layer(12) of the terminal(S101). The MAC layer of the terminal requests a base station to allocate resources for random access through a physical layer of the terminal. The MAC layer of the terminal sets up an uplink sub-channel by using resource information allocated by the base station. The MAC layer of the terminal transfers the RRC connection request message to the MAC layer of the base station through the uplink sub-channel(S109). The MAC layer of the terminal receives an RRC connection setup message from the MAC layer of the base station and transfers the RRC connection setup message to the RRC layer of the terminal(S110).