RANDOM ACCESS METHOD AND APPARATUS

摘要

Embodiments of the present invention disclose a random access method and an apparatus. According to the random access method disclosed in the embodiments, first downlink assignment information is obtained in a manner of a mapping relationship between first downlink assignment information and a preamble, where the first downlink assignment information is downlink assignment information used by a random access response message, and scheduling signaling of the random access response message does not need to be retransmitted by using the PDCCH channel, thereby resolving problems of a channel resource waste and an access delay in an existing random access method. The problems are caused because the PDCCH channel is used to retransmit the scheduling signaling of the random access response message.

主权项

1. A random access method, comprising:
receiving, by a base station, a preamble sent by user equipment UE; acquiring, by the base station according to a pre-obtained mapping relationship between first downlink assignment information and a preamble, first downlink assignment information corresponding to the preamble received by the base station, wherein the first downlink assignment information is downlink assignment information used by a random access response message; and sending, by the base station, the random access response message to the UE according to the first downlink assignment information.