Packet Data Convergence Protocol (PDCP) is specified by 3GPP in TS 25.323[1] for UMTS, TS 36.323[2] for LTE and TS 38.323[3] for 5G. PDCP is located in the Radio Protocol Stack in the UMTS/LTE/5G air interface on top of the RLC layer.
PDCP provides its services to the RRC and user plane upper layers, e.g. IP at the UE or to the relay at the base station. The following services are provided by PDCP to upper layers:
transfer of user plane data;
transfer of control plane data;
header compression;
ciphering;
integrity protection.
The header compression technique can be based on either IP header compression (RFC 2507) or Robust Header Compression (RFC 3095). If PDCP is configured for No Compression it will send the IP Packets without compression; otherwise it will compress the packets according to its configuration by upper layer and attach a PDCP header and send the packet.
Different header formats are defined, dependent on the type of data to be transported. In LTE, there are e.g. header formats for Control Plane PDCP Data PDU with long PDCP SN (12 bits), for User plane PDCP Data PDU with short PDCP SN (7 bits) and others.
packet, data, convergence, protocol, pdcp, specified, 3gpp, umts, pdcp, located, radio, protocol, stack, umts, interface, layer, pdcp, provides, services, user, plane, upper, layers, relay, base, station, following, services, provided, pdcp, upper, layers, tra. Packet Data Convergence Protocol PDCP is specified by 3GPP in TS 25 323 1 for UMTS TS 36 323 2 for LTE and TS 38 323 3 for 5G PDCP is located in the Radio Protocol Stack in the UMTS LTE 5G air interface on top of the RLC layer PDCP provides its services to the RRC and user plane upper layers e g IP at the UE or to the relay at the base station The following services are provided by PDCP to upper layers transfer of user plane data transfer of control plane data header compression ciphering integrity protection The header compression technique can be based on either IP header compression RFC 2507 or Robust Header Compression RFC 3095 If PDCP is configured for No Compression it will send the IP Packets without compression otherwise it will compress the packets according to its configuration by upper layer and attach a PDCP header and send the packet Different header formats are defined dependent on the type of data to be transported In LTE there are e g header formats for Control Plane PDCP Data PDU with long PDCP SN 12 bits for User plane PDCP Data PDU with short PDCP SN 7 bits and others References Edit TS 25 323 www 3gpp org Retrieved 2019 03 14 TS 36 323 www 3gpp org Retrieved 2019 03 14 TS 38 323 www 3gpp org Retrieved 2019 03 14 External links EditRFC 2507 IP header compression RFC 3095 Robust Header Compression Retrieved from https en wikipedia org w index php title Packet Data Convergence Protocol amp oldid 1056733699, wikipedia, wiki, book, books, library,
