A method for a random access, performed by a user equipment, UE, comprising: receiving a plurality of sets of RACH parameters, wherein each of the plurality of sets of RACH parameters is associated with, or, comprise a group of identifiers which is included in a plurality of groups of identifiers, and wherein first identifiers in the plurality of groups of identifiers are used for generating pseudo-random sequences, the group of identifiers associated with a device and the group of identifiers comprising at least one of: a RACH specific identifier for Dedicated/De-modulation reference signal, DMRS, of physical downlink control channel, PDCCH, a RACH specific identifier for DMRS of enhanced PDCCH, EPDCCH, a RACH specific identifier for DMRS of physical downlink shared channel, PDSCH, a RACH specific identifier for DMRS of physical uplink shared channel, PUSCH, or, a RACH specific identifier used in a channel state information reference signal, CSI-RS; measuring reference resources associated with the first identifiers in the plurality of groups of identifiers; selecting one of the measured reference resources according to signal strength as a selected reference resource; setting a first set of radio access channel, RACH, parameters from the plurality of sets of RACH parameters as a set of RACH parameters, the first set of RACH parameters associated with the selected reference resource; and performing a random access procedure in accordance with the set of RACH parameters; wherein the reference resources comprise CSI-RS resources, the CSI-RS resources conveying CSI-RSs generated from pseudo-random sequences based on the first identifiers in the plurality of groups of identifiers, the first identifiers comprising RACH specific identifiers used in CSI-RSs. receiving a plurality of sets of RACH parameters, wherein each of the plurality of sets of RACH parameters is associated with, or, comprise a group of identifiers which is included in a plurality of groups of identifiers, and wherein first identifiers in the plurality of groups of identifiers are used for generating pseudo-random sequences, the group of identifiers associated with a device and the group of identifiers comprising at least one of: a RACH specific identifier for Dedicated/De-modulation reference signal, DMRS, of physical downlink control channel, PDCCH, a RACH specific identifier for DMRS of enhanced PDCCH, EPDCCH, a RACH specific identifier for DMRS of physical downlink shared channel, PDSCH, a RACH specific identifier for DMRS of physical uplink shared channel, PUSCH, or, a RACH specific identifier used in a channel state information reference signal, CSI-RS; measuring reference resources associated with the first identifiers in the plurality of groups of identifiers; selecting one of the measured reference resources according to signal strength as a selected reference resource; setting a first set of radio access channel, RACH, parameters from the plurality of sets of RACH parameters as a set of RACH parameters, the first set of RACH parameters associated with the selected reference resource; and performing a random access procedure in accordance with the set of RACH parameters; wherein the reference resources comprise CSI-RS resources, the CSI-RS resources conveying CSI-RSs generated from pseudo-random sequences based on the first identifiers in the plurality of groups of identifiers, the first identifiers comprising RACH specific identifiers used in CSI-RSs. <EOS>