METHOD AND SYSTEM FOR IMPLEMENTING RANDOM ACCESS

摘要

A method and system for implementing random access are provided. In the method of the present invention, UEs can select their respective resident downlink component carriers according to the information of other downlink component carriers which have different Physical Random Access Channel (PRACH) resources from the initial resident downlink component carrier, wherein the information is carried in the system message sent from the network side, and perform the random access through the uplink component carriers corresponding to the selected resident downlink component carriers, thus part of the UEs residing on the initial resident downlink component carrier are distributed to other selected downlink component carriers, which thereby ensures load balance for the access, assigns the carrier resources reasonably and reduces the probability of congestion when UEs perform random access on one uplink component carrier.