Packet Data Convergence Protocol

E.DR_91 · Created Aug 27, 2019 12:30:49

In LTE, the Packet Data Convergence Protocol (PDCP) layer is responsible for

Header compression and decompression
Security aspects (i.e., ciphering and deciphering of UP and CP data, integrity protection and integrityverification of CP data)
Maintenance of PDCP sequence numbers (SNs), detection and discarding of duplicates and timer‐based discard
Routing and reordering of PDCP PDUs in the case of split bearers
Data‐recovery procedure for split bearers in DC, for instance needed when part of the data transmitted over one radio leg is lost due to bad radio conditions
Retransmission of PDCP service data units (SDUs) in the context of handover.
Complete PDCP PDUs
Despite proposals to link the SNs in RLC and PDCP
For URLLC services, packet duplication is supported for both UP and CP in PDCP for increased reliability and handover robustness.

E.DR_91 · Created Aug 27, 2019 12:30:49

In LTE, the Packet Data Convergence Protocol (PDCP) layer is responsible for

Header compression and decompression
Security aspects (i.e., ciphering and deciphering of UP and CP data, integrity protection and integrityverification of CP data)
Maintenance of PDCP sequence numbers (SNs), detection and discarding of duplicates and timer‐based discard
Routing and reordering of PDCP PDUs in the case of split bearers
Data‐recovery procedure for split bearers in DC, for instance needed when part of the data transmitted over one radio leg is lost due to bad radio conditions
Retransmission of PDCP service data units (SDUs) in the context of handover.
Complete PDCP PDUs
Despite proposals to link the SNs in RLC and PDCP
For URLLC services, packet duplication is supported for both UP and CP in PDCP for increased reliability and handover robustness.