Random access method and signalling method for the same

摘要

A method for generating an iterative sequence and a signal transmission method using the same are disclosed. As the cell size or the distance between a user equipment (UE) and a Node-B increases, the CP is repeated at least one time while the iterative sequence is generated, the CP length and the ZCZ length are adjusted, so that the sequence timing point can be easily detected, orthogonality between sequences is maintained, and the sequences can be clearly distinguished from each other.

主权项

1. A method for a user equipment (UE) to perform a random access to a Node-B, the method comprising:
receiving system information for a format of a preamble sequence consisting of a cyclic prefix (CP) part and a sequence part, wherein the system information indicates one format of a plurality of formats for a length for the CP part and a length for the sequence part; and transmitting the preamble sequence to the Node-B over a random access channel, the preamble sequence selected based on the indicated format, wherein the plurality of formats comprises:
a first format for basic lengths of the CP part and the sequence part,a second format for a case in which only the length of the CP part is increased compared to the first format, anda third format for a case in which both of the lengths of the CP part and the sequence part are increased compared to the first format.