Dictionary¶
This page is the dictionary top for quickly looking up 5GC terms. Choose the dictionary you want to read and pinpoint just the terms you need. Each dictionary is organized so that it can be used as a hub for the Registration (initial registration) chapter.
Dictionary List¶
| Dictionary | What it is for |
|---|---|
| NF Dictionary | Look up the formal names, roles, provided APIs, and related Interfaces of Network Functions (AMF/SMF/UPF, etc.) |
| Interface Dictionary | Look up the connection points, Protocols, Transports, and purposes of reference points (N1/N2/N3/N4, etc.) |
| Protocol Dictionary | Look up the layers, roles, and Specs of NAS/NGAP/SCTP/HTTP2/GTP-U/PFCP, etc. |
| Message Dictionary | Look up the direction, purpose, and main IEs of signaling Messages such as Registration Request |
| Timer Dictionary | Look up the start/stop triggers and timeout behavior of each Timer such as T3510/T3550 |
| Cause Dictionary | Look up the meaning and handling direction of failure reason codes such as 5GMM cause / NGAP Cause |
| IE Dictionary | Look up the meaning, appearing Messages, and purpose of the main Information Elements of 5GMM/5GSM/NGAP |
| HTTP API Dictionary | Look up the providing NF, purpose, and related reference points of SBI service APIs (Namf/Nsmf/Nudm, etc.) |
| NAS Dictionary | Look up the main messages, states, and procedures of NAS (5GMM/5GSM) |
| NGAP Dictionary | Look up the main procedures and messages of NGAP (N2) |
| PFCP Dictionary | Look up the main messages and forwarding rules (PDR/FAR/QER/URR/BAR) of PFCP (N4) |
| QoS Dictionary | Look up 5G QoS model terms (QoS Flow/QFI/5QI/GBR, etc.) |
| Security Dictionary | Look up 5GC security terms (key hierarchy/authentication methods/algorithms/SUCI, etc.) |
| Identifier Dictionary | Look up the meaning, composition, and purpose of the main identifiers (SUPI/SUCI/5G-GUTI/S-NSSAI, etc.) |
| 3GPP Spec Dictionary | Look up frequently referenced 3GPP TS/RFC by number, title, scope, and where they appear |
Usage Tip
Reading the Registration (initial registration) chapter first and then looking up the terms that appear in this dictionary will speed up your understanding.