5G Core Evolution: From 2G Networks to AI-Driven Future
Imagine a world where autonomous vehicles navigate bustling cities flawlessly, drone delivery systems transport packages swiftly through urban skies and smart factories optimise production with zero downtime, all powered by networks that think, adapt and evolve on their own.
“The 5G core, the pinnacle of telecom evolution, is unlocking these groundbreaking applications today, redefining the future of global connectivity,” says Ofer Gottfried, Chief Technology Officer at AxyomCore.
With more than two decades of experience driving innovation in telecommunications, Ofer has witnessed first-hand the industry’s seismic shift from the rudimentary 2G systems of the 1990s to the cloud-native, AI-ready 5G core of today.
His perspective highlights how the mobile core has evolved into the foundation for tomorrow’s digital services, enabling operators to enhance customer experiences, unlock new revenue streams and future-proof their networks.
From circuit-switched to cloud-native
The journey began in the 1990s, when the 2G core introduced GSM and digital circuit-switching, enabling mobile voice calls and SMS for the first time. The 2000s brought 3G, shifting networks towards packet switching and mobile internet, though scalability challenges remained.
With the advent of LTE in the 2010s, all-IP networks enabled high-speed streaming, VoLTE and early IoT services. But its siloed design lacked the flexibility required for diverse access types. It sets the stage for a radical rethinking of the mobile core.
“The deployment of the 5G core represents a paradigm shift, built on a cloud-native, service-based architecture with hardware independence. Leveraging Network Function Virtualisation and Software-Defined Networking, the 5G core supports ultra-low latency, massive IoT and network slicing,” Ofer explains.
5G Core: The “core of all cores”
Unlike previous generations, by design, the 5G core converges mobile, fixed-line, Wi-Fi and satellite access under one platform. For Mobile Network Operators (MNOs), it enables both operational efficiency and new revenue opportunities.
“The 5G core provides the capability to support multiple services and different traffic types in parallel,” Ofer says.
“It enables MNOs to deliver a seamless connectivity experience to consumers and enterprises, including a diverse suite of applications such as voice and data, fixed wireless access and Layer 2 Ethernet.”
Key differentiators include hardware independence, energy efficiency and guaranteed Quality of Service (QoS) through slicing. As Ofer explains: “Network slicing allows MNOs to create virtual networks tailored to specific use cases, such as low-latency slices for gaming or high-throughput slices for 4K, 8K video streaming, ensuring differentiated connectivity that meets diverse customer needs.”
The role of AI
AI is fast becoming central to maximising the 5G core’s potential. “AI analyses traffic patterns to optimise resource allocation, prevent congestion and ensure guaranteed QoS, particularly for high-priority services like emergency communications,” Ofer notes.
Automation enhances resilience. “Machine learning detects anomalies and predicts failures, minimising downtime and enhancing network reliability.” Meanwhile, AI-driven threat detection bolsters security across multi-access networks, ensuring consistent protection as connectivity becomes ever more critical.
The synergy between a programmable core and AI integration not only boosts efficiency but unlocks entirely new services. For example, ultra-reliable low-latency slices can support autonomous vehicles, drone surveillance, or even urban air mobility through electric Vertical Take-Off and Landing (eVTOL) aircraft.
Preparing for the future
Not all 5G core platforms are created equal. According to Ofer: “When evaluating technology platforms, it is recommended that MNOs consider superior scalability, seamless multi-access integration and AI-optimised architecture.”
By choosing advanced, cloud-native solutions, operators can achieve the adaptability needed to support emerging standards such as 5G Advanced, while aligning with sustainability goals through energy-efficient architectures.
The evolution of the mobile core, from the digital voice breakthroughs of 2G to the AI-driven flexibility of 5G, tells the story of continuous reinvention in pursuit of faster, smarter and more resilient connectivity.
“The 5G core, enhanced by AI and evolving standards, is not just a technological leap; it is the foundation for reimagining global communication.”