Software-Defined Networking Architectures for 5G Wireless Systems
Summary
Software-Defined Networking (SDN) architectures for 5G wireless systems decouple the control plane from the data plane, enabling centralised or logically centralised controllers to program network behaviour dynamically. By introducing virtual network functions and network slicing, SDN facilitates the rapid deployment of bespoke services, fine-grained quality-of-service guarantees and on-demand resource allocation. Cloud-native principles further streamline the operation and management of both radio access and core network domains, while distributed edge controllers address latency and resilience requirements. These developments support a wide range of use cases, from ultra-reliable low-latency communications in industrial automation to massive machine-type communications for IoT ecosystems. The global significance of this paradigm lies in its potential to unify heterogeneous vendor equipment, automate network lifecycle management and reduce operational expenditure, thus paving the way for more sustainable, adaptive and high-performance 5G infrastructures.
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Recent work on a multi-x cloud-native network operator architecture demonstrates how an intent-based, distributed orchestration and management framework can simplify telco workload lifecycles across multiple radio stacks. By adhering to cloud-native pillars of isolation, scalability and observability, the architecture achieved up to 75 % improvement in initial deployment agility and reduced operational overheads by over 90 %, while sustaining high throughput and five-nines availability during upgrades and reconfigurations.
A redesigned flat 5G core network separates control and data functions into dedicated nodes within a multi-session gateway framework. This distributed design reduces signalling paths, lowers handover latency and accelerates attachment procedures. Simulation results indicate significantly improved quality-of-experience metrics, with faster network changeover and reduced end-to-end delays compared to traditional centralised core models.
Modelling and evaluation of an SDN-based 5G core architecture illustrate the benefits of vendor independence and flexible control in the data-plane. Through a custom network simulator, the proposed design delivered 18 % to 62 % reductions in end-to-end delay under varying load scenarios. Analyses of controller resource utilisation and throughput further validate the scalability and responsiveness of the approach, reinforcing a broader trend towards virtualised, software-driven core networks.
Software-Defined Networking Architectures for 5G Wireless Systems publication trend
The graph below shows the total number of articles in software-defined networking architectures for 5g wireless systems across all publications each year (not limited to Nature Index journals).
Technical terms
Software-Defined Networking (SDN): A paradigm that decouples network control and forwarding functions to enable programmable network management.
Control plane: The network component responsible for decision-making, such as routing and policy enforcement.
Data plane: The part of the network that forwards user traffic according to control-plane directives.
Network Function Virtualisation (NFV): The abstraction of network functions from proprietary hardware into software instances.
Network slicing: The partitioning of a physical network into multiple virtual, end-to-end networks tailored to specific services.
Cloud-native: An approach that designs and runs applications exploiting cloud computing frameworks for scalability and resilience.
Edge controller: A distributed SDN controller placed near the network edge to meet low-latency and high-availability requirements.
References
- Athena: An Intelligent Multi-x Cloud Native Network Operator. IEEE Journal on Selected Areas in Communications (2023).
- Improved flat mobile core network architecture for 5G mobile communication systems. International Journal of Data and Network Science (2023).
- Modeling and Evaluation of Software Defined Networking Based 5G Core Network Architecture. IEEE Access (2021).
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