Packet Data Convergence Protocol

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The Packet Data Convergence Protocol (PDCP) is a Layer 2 protocol used in mobile radio on the air interface . The protocol is specified by 3GPP for UMTS in TS 25.323, for LTE in TS 36.323 and for 5G New Radio (NR) in TS 38.323. PDCP lies in the protocol stack above the radio link control (RLC) layer. PDCP is used to transmit IP data as well as to transmit control information of the RRC protocol.

PDCP offers the following functions to the higher layers:

  • Transport of user information (user plane data)
  • Transport of control information
  • Compression of header information, e.g. B. by means of ROHC
  • Encryption
  • Integrity assurance.

Individual evidence

  1. ↑ 3GPP TS 25.323 Packet Data Convergence Protocol (PDCP) specification
  2. ↑ 3GPP TS 36.323 Evolved Universal Terrestrial Radio Access (E-UTRA); Packet Data Convergence Protocol (PDCP) specification
  3. ↑ 3GPP TS 38,323 NR; Packet Data Convergence Protocol (PDCP) specification