Of a random access method and device for power control channel

The present invention provides a random access channel (PRACH) power control, the method comprising: configuring the base station desired to initially received on the PRACH assigned to the terminal on the terminal power P0, pre quantized to one or more of a power-up step dPrampup retransmission time value, and the random access signaling or a plurality of quantized values; P0 of the terminal in accordance with one of its configuration, pre quantized values ​​of one or more, and one or more dPrampup quantized value obtained suit their needs P0, pre and dPrampup; terminal according to the suit their needs P0, pre and dPrampup obtained, resulting in PPRACH own transmission power of the PRACH. The present invention also discloses a device for the PRACH power control, power control parameters can be arranged to adapt its latency requirements for the terminal to meet the needs of different users to access delay, and reduce access delay and improves the user speed network access, improved user satisfaction.