Method, system and device for transmitting random access preamble

摘要

A method, a system and a device for sending a random access preamble are provided. The method includes: a base station determines an uplink component carrier to be utilized by a terminal for sending a random access preamble, and sends identification information of the uplink component carrier to the terminal (30); and the terminal selects a component carrier corresponding to the uplink component carrier identification from multiple uplink component carriers which are supported by the terminal, and sends a random access preamble to the base station utilizing the component carrier (31). With the invention, a terminal in a Long Term Evolution Advanced (LTE-A) system can select a component carrier for sending a random access preamble based on indication of a base station.

主权项

1. A method for transmitting a random access preamble, comprising:
determining, by an eNodeB, an uplink component carrier over which a user equipment transmits a random access preamble; and transmitting, by the eNodeB, an identifier of the uplink component carrier to the user equipment to instruct the user equipment to transmit the random access preamble over a component carrier corresponding to the identifier of the uplink component carrier, wherein transmitting the identifier of the uplink component carrier to the user equipment comprises:
carrying, by the eNodeB, the identifier of the uplink component carrier in a parameter of Physical Random Access Channel (“PRACH”) Mask Index indicating a PRACH resource over which the user equipment transmits the random access preamble, andtransmitting the parameter of PRACH Mask Index to the user equipment.