Packet Data Convergence Protocol (PDCP) is specified by 3GPP in TS 25.323 for UMTS, TS 36.323 for LTE and TS 38.323 for 5G.
The Packet Data Convergence Protocol (PDCP) is specified by the 3GPP in its technical specification TS 25.323 for Universal Mobile Telecommunications System (UMTS), TS 36.323 for Long-Term Evolution (LTE), and TS 38.323 for Fifth Generation (5G).