Commit ad4c0139 authored by Tien-Thinh Nguyen's avatar Tien-Thinh Nguyen
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add docs

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<a href="http://www.openairinterface.org/">
<img src="./images/oai_final_logo.png" alt="" border=3 height=50 width=150>
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<b><font size = "5">OpenAirInterface SMF Feature Set</font></b>
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**Table of Contents**
1. [5GC Service Based Architecture](#1-5gc-service-based-architecture)
2. [OAI SMF Available Interfaces](#2-oai-smf-available-interfaces)
3. [OAI SMF Feature List](#3-oai-smf-feature-list)
# 1. 5GC Service Based Architecture #
![5GC SBA](./images/5gc_sba.png)
#2. OAI SMF Available Interfaces #
| **ID** | **Interface** | **Status** | **Comment** |
| ------ | ------------- | ------------------ | -----------------------------------------------------|
| 1 | N4 | :heavy_check_mark: | between SMF and UPF (PFCP) |
| 2 | N7 | :x: | between SMF and PCF |
| 3 | N10 | :heavy_check_mark: | between SMF and UDM (Nudm_SubscriberDataManagement) |
| 4 | N11 | :heavy_check_mark: | between SMF and AMF (Nsmf_PDU_Session Services, |
| | | | Namf_N1N2MessageTransfer) |
#3. OAI SMF Feature List #
Based on document **3GPP TS 23.501 v16.0.0 §6.2.2**.
| **ID** | **Classification** | **Status** | **Comments** |
| ------ | ------------------------------------------------------------------- | ------------------ | ------------------------------------------- |
| 1 | Session Management (Session Establishment/Modification/Release) | :heavy_check_mark: | |
| 2 | UE IP address allocation & management​ | :heavy_check_mark: | Only support static ipv4 address allocation |
| 3 | DHCPv4 (server and client) and DHCPv6 (server and client) function | :x: | |
| 4 | Respond to ARP requests and/or IPv6 Neighbour Solicitation requests | :x: | Local configuration in SMF |
| 5 | Selection of UPF function​ | :x: | |
| 6 | Configures traffic steering at UPF | :x: | |
| 7 | Termination of interfaces towards PCFs | :x: | |
| 8 | Lawful intercept | :x: | |
| 8 | Charging data collection and support of charging interfaces | :x: | |
| 10 | Termination of SM parts of NAS messages | :heavy_check_mark: | |
| 11 | Downlink Data Notification | :heavy_check_mark: | |
| 12 | Determine SSC mode of a session​ | :heavy_check_mark: | Only support SSC mode 1​ |
| 13 | Initiator of AN specific SM information, sent via AMF over N2 to AN | :heavy_check_mark: | |
| 14 | Support for Control Plane CIoT 5GS Optimisation | :x: | |
| 15 | Support of header compression. ​ | :x: | |
| 16 | Act as I-SMF in deployments | :x: | |
| 17 | Provisioning of external parameters | :x: | |
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