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Nokia 5G Core (5GC)

With the right core network, you can lead the way and create what’s next

5G is your opportunity to become the company you were meant to be.
But how do you serve everyone and everything, while maximizing returns? The answer lies in rethinking the core. The 5G Standalone Core enables you to pivot to and profit on new opportunities, with the confidence to succeed. Nokia proudly celebrates that CSPs and Enterprises all over the world are partnering with us to deliver the extraordinary. It’s time to change your game.

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What is 5G Core? Is 5G worth it?

The 5G 3GPP architecture relies upon the 5G Standalone (5G SA) New Radio and the 5G Standalone Core (5G SA Core). The architectural design of Nokia's core is inherently cloud-native: its open, modular structure, coupled with 5G Service Based Architecture (5G SBA) make it practical to introduce future network functions and allow any function to be implemented and scaled, rapidly, whenever, and wherever required. Network functions are deployed as micro-services, where business logic is delivered as small, modular stateless services. The 5GC SA network functions can be moved to the edge of the network, satisfying the low latency demands of critical machine type communication by providing unprecedented levels of automation across an end-to-end network to fulfill the needs of new services and applications.

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what is 5g core

Explore our immersive 5G core content collection

What are 5G Core network functions?

Related questions include: What are the 5G core components? What is the core IP network? What is included in the core network? What is the 5G network architecture? What is the difference between 4G and 5G network architecture?

The 5G Core network functions, shown in light-blue for 5G SA2, resemble the 4G Core network elements, in that they provide familiar capabilities for mobility management, routing, security, policy control, charging, and subscriber data management. However, because the 5G core architecture is built using cloud-native technology including a 5G Service Based Architecture (5G SBA), the 5G core network elements take on a more software-based naming of network functions.

Furthermore, new capabilities are introduced in 5G Standalone Core, including:

Click to enlarge Network function summary

What are 5G’s challenges?

CSPs ask, what are the 5G challenges when shifting to a 5G core network architecture? The 5G SA core (5GC) delivers ultra-reliable connectivity and low latency performance, which are critical to the success of the next phase of Industry 4.0’s industrial revolution. As the core is at the heart of answering these 5G challenges, the core must evolve. A CSP’s challenges in achieving this transformation include:

  • How to profit from opportunity with an open 5G core that embraces openness and the new ecosystem that will spring from the 5G revolution.
  • How to deploy without limits onto bare metal or multi-cloud, move network functions to where best placed, and adopt slicing to build virtual networks with security and finely tuned SLAs.
  • How to evolve with confidence for lowest possible risk while maintaining reliability and protecting the CSP’s brand value, even while proceeding to disrupt the market with innovative offers.

The difference between 5G SA and 5G NSA

How should a CSP deploy a 5G Standalone architecture? What is the best path from 4G EPC or 5G NSA to 5G SA? CSP network strategists must consider these questions when planning how they will deliver 5G’s full potential. Learn more from our in-depth materials.

How does Nokia secure the 5G core?

5G Core security, data protection and privacy are increasingly important with the evolution of networks to 5G NR, because of the 5G Core’s critical role in enabling mission-critical applications, Industry 4.0, IoT services, and consumer personalization. Trust is a vital attribute for these applications and services.

Nokia takes the security built into our products seriously. Our 5G Core is designed for privacy and security, with layered protection based on defense-in-depth design and zero-trust principles and tested against 5G-specific use cases. CSPs get full control to secure their 5G services, thanks to the pervasive and automated security management built into our design practices, 5G core security software, and NetGuard security solutions.

standalone core video

Binge on our 5G SA and 5G NSA materials

How does 5G Core network automation allow further benefits?

Previously, mobile core and telco cloud were automated for the sake of reducing costs, using a telco network element approach. This created islands of automation, which manipulated the element management systems.

The introduction of 5G's architecture and Web-scale/IT's cloud techniques changes the automation equation, enabling an automation framework based on the exposure of automation elements to each other via APIs and the creation of closed-loops with feedback. AI/ML can be used to achieve further benefits, such as automated avoidance of predicted faults.

What is network slicing?

CSPs use core network slicing to create and run separate networks on shared cloud infrastructure. These independent networks enable service-specific Service Level Agreements (SLAs) for connectivity, mobility, capacity, security, redundancy and performance.

The cloud-native mobile core is the anchor of 4G and 5G network slices, because it controls device subscriptions and slice selection. The core is responsible for its sub-slice and the instantiation and configuration of the required 5G Core network functions. The 5G Core network functions’ deployment depends on the attributes of the specific core slice, such as coverage area, throughput, latency, resource sharing level, number of user equipment, etc.

How to deploy 5G standalone core on public cloud and hybrid cloud?

Take advantage of 5G standalone core on public cloud & hybrid cloud infrastructure, automation, analytics, and innovation. Extending the 5G core to edge cloud and across multicloud helps enable fast time-to-market, investment agility, quicker operations, and new business opportunities with enterprises.

Technical demo: Automatic network slice creation in Nokia's 5G Core

What will Software as a Service (SaaS) mean for the 5G Core?

CSPs and Enterprises will benefit from 5G Core SaaS by using network on demand, getting a faster speed to market, easy and fast scaling (larger and smaller), and OpEx-based simplicity. Core networks are highly complex and must be resilient and reliable. Yet SaaS changes the way core networks are deployed and operated. Therefore, a 5G Core SaaS must be dependable and operate in a manner that fits the CSP’s or Enterprise’s needs. We are building 5G Core SaaS per 3GPP architecture and slicing, so that you can choose to deploy an entire core, or just a portion, or extend your existing network capabilities. We invite you to explore the nearby 5G Core SaaS materials.

Core to SaaS

Welcome to 5G Core SaaS

See Nokia 5G Core deployment case studies

CSPs can be confident our 5G Standalone Core provides the lowest possible risk while ensuring reliability and protecting their brand value, even as they proceed to disrupt the market with innovative offers. Explore these CSPs, and more:  

  • T-Mobile US, with the world’s first nationwide 5G Standalone service  
  • Telia Nordics, evolving to 5G and rolling out the 5G Standalone Core  
  • DISH Wireless US, with the world’s first 5G Standalone deployed in AWS’s cloud  
  • Telenet Belgium, deploying the 5G Standalone Core onto Google Anthos
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5G Core case studies

Why choose Nokia for 5G Standalone Core?

Nokia cloud-native mobile core is in live commercial service, serving 5G Standalone (5G SA) and 5G Non-Standalone (5G NSA), plus 4G, 2G/3G, unlicensed wireless, and fixed access. It helps resolve the mobile core’s challenges, because it is:

  • Done right, using cloud-native architecture and infrastructure-agnostic design. Deploy it on multi-cloud – private, public or hybrid cloud, centralized or edge cloud, with an optimized performance footprint for any deployment model.
  • Done now, equipped with extreme automation, it simplifies complexity with the latest 5G core technology to boost the top line and reduce costs. Open and programmable, it creates an innovation engine for a strategic business advantage – today.
  • Made real, delivering on stringent reliability & quality requirements, because it is created & delivered with our broad portfolio and global experience, including hundreds of cloud deployments and dozens of 5G Standalone Core customers.

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