| 摘要 |
<p>Disclosed are a data transmission method, a user equipment (UE), a base station, and a system. The present invention relates to the technical field of communications, and can solve a problem of resource waste in a machine to machine (M2M) data transmission process. The method comprises: a UE selecting a preamble sequence, and obtaining uplink time-frequency resources and downlink time-frequency resources that correspond to the preamble sequence (101); sending the preamble sequence to a base station, so that the base station decodes the preamble sequence and determines, according to the decoded preamble sequence, uplink time-frequency resources and downlink time-frequency resources that correspond to the decoded preamble sequence (102); and if receiving, by using the downlink time-frequency resources, decoding response information sent by the base station, sending a packet to the base station by using the uplink time-frequency resources, the decoding response information being used for indicating that the base station successfully decodes the preamble sequence (103). The present invention is mainly applied in an M2M data transmission process.</p> |
