PFI

PFI

Other →
Introduced in Rel-8 Also in: Services, Radio Access Network

PFI is the Packet Format Information, which is a data structure describing the format of a packet for processing by the protocol stack.

Category
Other
Introduced
Rel-8
Where
Core Network › 5G Core
Also touches
2 segments
Specifications
8 specs
PFI Description Purpose Detected Changes Specifications

Description

Packet Format Information

Purpose & Motivation

Detected Changes Across Releases

from 3GPP Change Requests

Specific changes extracted from the „Change history“ tables of 3GPP specifications (1 CRs across 1 releases). Complements the general historical overview above with the evidence-based evolution of this function.

Studied in Rel-8, normative work from Rel-16.

Rel-16 1 change

In Release 16, the specification was enhanced to clarify the mapping relationship between a V2X Service and a PFI for a PC5 unicast link. This explicitly acknowledged that when multiple V2X service types share a single PC5 unicast link, one PC5 QoS Flow identified by a PFI may be associated with more than one of those service types. The clarification provided a more defined framework for managing PFI assignment and the associated PC5 QoS Context within the unicast link procedures.

  • Clarification on mapping relationship between V2X Service and PFI for a PC5 unicast link TS 23.287CR0130

Defining Specifications

3GPP specifications that define or reference PFI, with the latest known release. Sourced from the 3GPP document catalog — see methodology.

SpecificationTitleRelease
TS 23.287 vj00 5G V2X Architecture Enhancements Rel-19
TS 23.304 vk00 5G Proximity Services (ProSe) Stage 2 Rel-20
TS 31.115 vj00 Secured Packet Structure for UICC Applications Rel-19
TS 32.277 vj20 Charging Management for Proximity Services (ProSe) Rel-19
TR 32.846 vh00 Charging for ProSe in 5GS Rel-17
TS 43.064 vj00 GPRS Radio Interface Lower-Layer Functions Rel-19
TS 44.060 vj00 GERAN RLC/MAC Protocol Specification Rel-19
TS 48.018 vj00 BSS-SGSN Interface for GPRS Control Rel-19