About Saviah 5GC
5GC核心網路是5G行動網路的大腦，它在實現5G服務的全部潛力方面發揮著至關重要的作用，如果沒有5GC，則無法管理終端裝置及基站服務。5GC提供最終使用者可靠及安全的網路連接，造訪多元的應用服務，有助企業營運效率的提升。Saviah 5GC符合3GPP R15/R16的規範標準，具備完整的網路功能，如圖所示：
The main 5G Network Functions are as follows:
- Access and Mobility Management Function (AMF): termination of Non-Access Stratum (NAS) signaling, NAS ciphering and integrity protection, registration management, connection management, mobility management, access authentication and authorization, and security context management.
- Session Management Function (SMF): session management (session establishment, modification, and release), User Equipment (UE) IP address allocation and management, Dynamic Host Configuration Protocol (DHCP) functions, termination of NAS signaling related to session management, DL data notification, and traffic steering configuration for UPF for proper traffic routing.
- User plane Function (UPF): supporting packet routing and forwarding, packet inspection, and quality of service (QoS) handling; acts as an external PDU session point of interconnection to a data network (DN); and is an anchor point for intra- and inter-radio access technology (interRAT) mobility.
- Authentication Server Function (AUSF): it is used to facilitate the 5G security process.
- Network Slice Selection Function (NSSF): selecting the network slice instances to serve the UE, determining the allowed Network Slice Selection Assistance Information (NSSAI), and determining the AMF set to be used to serve the UE.
- Unified Data Management (UDM): generation of authentication and key agreement (AKA) credentials, user identification handling, access authorization, and subscription management.
- Unified Data Repository (UDR): a centralized data storage unit that consolidates data collected from various, often siloed, data resources.
- Network Exposure Function (NEF): supporting exposure of capabilities and events, secure provision of information from external application to 3GPP network, and translation of internal/external information.
- NF Repository Function (NRF): supporting the service discovery function while maintaining NEF profile and available NEF instances.
- Policy Control Function (PCF): supporting unified policy framework, providing policy rules to CP functions and accessing subscription information for policy decisions in the UDR.
free5GC vs. Saviah 5GC
- free5GC (開放原始碼)：為全世界第一套依照3GPP R15國際標準所開發的開放原始碼5G核心網路，適用於原型 (prototype)、測試 (testbed) 及概念驗證 (proof of concept)。
- Saviah 5GC (商用產品) ：依照客戶需求開發，適用於各種垂直應用；擁有更佳的性能 (performance)、可靠性 (reliability) 和互通性 (interoperability)。
 |
 |
|
|---|---|---|
| Framework | ||
| Security (system/software security) | ||
| Interoperability | ||
| Functionality | subset | all |
| Technical features | subset | all |
| Web/user interface (UI) | partial | all |
| Cloud version | x | |
| Network management | x | |
| Billing, charging, accounting | x | |
| Customization | x | |
| Performance | x | |
| Optimization | x | |
| Reliability | x |
Saviah 5GC Target
Saviah為大型企業提供高性價比的產業級 (industry-grade) 5G核網服務，為中小企業提供輕量級 (lightweight) 5G核網服務，輕鬆部署5G專用網路。
