4. Packet Data Convergence Protocol (PDCP)

  1. SeungJune Yi,
  2. SungDuck Chun,
  3. YoungDae Lee,
  4. SungJun Park and
  5. SungHoon Jung

Published Online: 5 SEP 2012

DOI: 10.1002/9781118188545.ch4

Radio Protocols for LTE and LTE-Advanced

Radio Protocols for LTE and LTE-Advanced

How to Cite

Yi, S., Chun, S., Lee, Y., Park, S. and Jung, S. (2012) Packet Data Convergence Protocol (PDCP), in Radio Protocols for LTE and LTE-Advanced, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9781118188545.ch4

Author Information

  1. LG Electronics, South Korea

Publication History

  1. Published Online: 5 SEP 2012
  2. Published Print: 5 SEP 2012

ISBN Information

Print ISBN: 9781118188538

Online ISBN: 9781118188545



  • AM DRB;
  • handover support functions;
  • header compression;
  • packet data convergence protocol (PDCP);
  • radio resource control (RLC) layer;
  • security functions;
  • SRB;
  • UM DRB


The packet data convergence protocol (PDCP) layer is running on top of radio resource control (RLC) layer. A PDCP entity which is used to perform the PDCP functions can be configured either with both transmitting and receiving sides (for a bidirectional radio bearer), or only one of them (for a unidirectional radio bearer). Radio bearers utilizing PDCP entities can be categorized into SRB, AM DRB and UM DRB. The PDCP control unit manages control information generated by the PDCP entity. There are two kinds of control information are defined: PDCP status report and ROHC feedback. The PDCP entity performs header compression, security functions, handover support functions, maintenance of PDCP sequence numbers for SRB and DRB and timer-based SDU discard for SRB and DRB.

Controlled Vocabulary Terms

Acknowledged Mode Data Radio Bearer; handover; packet radio networks; protocols; radiocommunication