3 Definitions and Abbreviations

25.3233GPPPacket Data Convergence Protocol (PDCP) specificationRelease 17TS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in [7] and the following apply.

N-context Refers collectively to both N-context-C and N-context-D.

N-context* Refers collectively to both N-context-C* and N-context-D*.

N-context-C The compression context for downlink in SRNC at any given point of time.

N-context-C* The frozen snapshot of the compression context for downlink taken by SRNC.

N-context-C-static*
The frozen snapshot of the static part of the compression context for downlink taken by SRNC.

N-context-D The decompression context for uplink in SRNC at any given point of time.

N-context-D* The frozen snapshot of the decompression context for uplink taken by SRNC.

N-context-D-static*
The frozen snapshot of the static part of the decompression context for uplink taken by SRNC.

M-context Refers collectively to both M-context-C and M-context-D.

M-context* Refers collectively to both M-context-C* and M-context-D*.

M-context-C The compression context for uplink in UE at any given point of time.

M-context-C* The frozen snapshot of the compression context for uplink taken by UE.

M-context-C-static*
The frozen snapshot of the static part of the compression context for uplink taken by UE.

M-context-D The decompression context for downlink in UE at any given point of time.

M-context-D* The frozen snapshot of the decompression context for downlink taken by UE.

M-context-D-static*
The frozen snapshot of the static part of the decompression context for downlink taken by UE.

M-HC Entity located in the mobile terminal that performs header compression for uplink (i.e. UE PDCP)

M-HCD Refers collectively to both M-HC and M-HD.

M-HD Entity located in the mobile terminal that performs header decompression for downlink (i.e. UE PDCP)

N-HC Entity located in the network that performs header compression for downlink (i.e. RNC PDCP)

N-HCD Refers collectively to N-HC and N-HD

N-HD Entity located in the network that performs header decompression for uplink (i.e. RNC PDCP)

3.2 Abbreviations

For the purposes of the present document, the following abbreviations apply:

AMR Adaptive Multi-Rate

AS Access Stratum

CID Context Identifier

C-SAP Control Service Access Point

HC Header Compression

IETF Internet Engineering Task Force

IP Internet Protocol

L2 Layer 2 (data link layer)

L3 Layer 3 (network layer)

MBMS Multimedia Broadcast Multicast Service

M-HC Mobile Header Compressor

M-HCD Mobile Header Compressor/Decompressor

M-HD Mobile Header Decompressor

NAS Non Access Stratum

N-HC Network Header Compressor

N-HCD Network Header Compressor/Decompressor

N-HD Network Header Decompressor

PDCP Packet Data Convergence Protocol

PDU Protocol Data Unit

PID Packet Identifier

PPP Point-to-Point Protocol

p-t-p Point-to-Point

p-t-m Point-to-Multipoint

RB Radio Bearer

RFC Request For Comments

RLC Radio Link Control

RNC Radio Network Controller

ROHC RObust Header Compression

RTP Real Time Protocol

SDU Service Data Unit

TCP Transmission Control Protocol

UDP User Datagram Protocol

UE User Equipment

UMTS Universal Mobile Telecommunications System

UTRA UMTS Terrestrial Radio Access

UTRAN UMTS Terrestrial Radio Access Network