In some possible embodiments of the present disclosure, the reception module is further configured to receive the access request message transmitted by the UE through the PRACH corresponding to an interlacing unit, and an interlacing unit number corresponds to the quantity of the PSP-IDs. The selection module is further configured to determine the quantity of the PSP-IDs to be transmitted by the UE corresponding to the selected interlacing unit in accordance with a correspondence between the interlacing unit number and the quantity of the PSP-IDs.

In some possible embodiments of the present disclosure, the transmission module is further configured to transmit a random access response message including the indication information about the uplink resources to the UE.

In still yet another aspect, the present disclosure provides in some embodiments an access device including the above-mentioned SP-ID indication device.

In still yet another aspect, the present disclosure provides in some embodiments an SP-ID indication device for use in a UE, including: a transmitter configured to transmit an access request message to an access device through a PRACH, the access request message being at least used to indicate the quantity of PSP-IDs to be transmitted by the UE; and a receiver configured to receive resource information about uplink resources from the access device, the uplink resources being selected by the access device in accordance with the quantity of the PSP-IDs to be transmitted by the UE and used to transmit the PSP-IDs to be transmitted by the UE.