PDCP Insights | Sumble

What is PDCP?

PDCP, or Packet Data Convergence Protocol, is a protocol layer in wireless communication systems, particularly in LTE and 5G NR. It's responsible for header compression, security (ciphering and integrity protection), and in the case of handover, sequence numbering for lossless data transfer. It sits above the Radio Link Control (RLC) layer and below the Radio Resource Control (RRC) layer in the protocol stack. It is used to optimize the transfer of IP packets over the air interface.

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What other technologies are related to PDCP?

PDCP Complementary Technologies

RLC

RLC (Radio Link Control) is a layer below PDCP in the protocol stack, providing error correction and segmentation/reassembly services. It is essential for PDCP to function correctly.

mentioned alongside PDCP in 75% (717) of relevant job posts

RRC

RRC (Radio Resource Control) is a layer above PDCP, responsible for radio resource management. PDCP relies on RRC configuration.

mentioned alongside PDCP in 52% (602) of relevant job posts

SDAP

SDAP (Service Data Adaptation Protocol) is a layer above PDCP in 5G NR, responsible for QoS flow mapping to DRBs. It complements PDCP's header compression and security functions.

mentioned alongside PDCP in 94% (125) of relevant job posts