METHOD AND APPARATUS OF ALLOCATING RANDOM ACCESS CHANNELS AND RANDOM ACCESSING FOR SCALABLE BANDWIDTH

摘要

A random access channel allocation method for a scalable bandwidth and a random access method and apparatus are provided to map to time and frequency resources of a random access channel. A terminal compares a reception bandwidth of a base station and a transmission bandwidth of the terminal(S710). If the reception bandwidth of the base station is larger than that of the terminal, the terminal selects one of left and right regions based on a central frequency of the reception band and determines it as a transmission band(S730). The terminal selects one of random access channels allocated to a reception band corresponding to the determined transmission band(S750) and transmits a random access preamble to the selected random access channel(S790).