An information transmission method, a base station, and user equipment are described. The method includes receiving a random access preamble sent by user equipment (UE) and generating first information according to the received random access preamble. The first information is random access response information, and the first information includes at least one of the following information: narrowband indication information used for transmission of a control channel, initialization parameter indication information of a demodulation reference signal scrambling sequence initialization parameter used for transmission of the control channel, coverage enhancement level indication information used for transmission of the control channel, or resource allocation information used for transmission of second information. The second information is response information to the first information. The method further includes sending the first information to the UE.