PDCP

Packet Data Convergence Protocol

PDCP is an abbreviation for Packet Data Convergence Protocol. This protocol is specified by 3GPP in TS 25.323 for UMTS, TS 36.323 for LTE and TS 38.323 for 5G New Radio [NR). The PDCP is located in the Radio Protocol Stack in the UMTS/LTE/5G Air interface on top of the RLC layer.

PDCP provides its services to the RRC and user plane upper layers, e.g. IP at the UE or to the relay at the base station.