5G Core (5GC) Network is the brain of the 5G mobile network and plays a crucial role in realizing the full potential of 5G services. Without 5GC, fully fledged Radio Access Network (RAN) services cannot be obtained. 5GC provides reliable, secure connectivity to the network for end users to access its services.
Saviah 5GC complies with 3GPP R15/R16 standards and has complete Network Functions (NFs), as shown in the following figure:

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 (open source): the world’s 1st open-source 5GC network that complies with 3GPP R15 standards and is suitable for prototype, testbed and proof of concept (POC) systems.
  • Saviah 5GC (commercial product): oriented by customer needs and suitable for various vertical applications, with performance, reliability and interoperability that are better than those of the open-source version.
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 Web UI Demo Sample

Saviah 5GC Target

Saviah provides the most cost-effective industry-grade 5GC for large enterprises, and lightweight 5GC makes it easy for small and medium-sized enterprises (SMEs) to deploy 5G PNs.