As CSPs make strategic and structural innovations to improve the scalability, speed and performance of their network services, many are at crossroads
CSPs have struggled for years to transform their IT architectures and landscapes, which have evolved dramatically over the last two decades. Most of them are facing the legacy challenges of monolithic BSS/OSS stacks compounded as the tech stacks differ for each line of business.
Also, with every new generation of technology, the complexity of the networks also increases. That’s exactly the case with 5G. The rollout of new 5G services has intensified the already strong competition between CSPs and their more agile hyperscaler counterparts.
5G carries new requirements – including On-demand services, enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC) which demand new capabilities.
The complex, siloed architecture of CSPs’ existing networks prevents rapid innovation and operational agility. These networks are challenging to automate and manage because they are built on vertically integrated monolithic stacks designed to run vendor-specific virtual network functions (VNFs).
Cloud-native architectures and the utilisation of containerized network functions (CNFs) are also required for 5G. Using CNFs in conjunction with VNFs complicates operations even more.
Furthermore, traditional orchestration platforms lack the telco-centric features needed to automate multi-tenant, distributed CNFs and provide the resiliency and reliability required in a highly regulated industry with stringent service-level agreements and demanding consumers. Operations that take place in silos make end-to-end visibility nearly impossible, dampening the prospect of tailored 5G services.
All these challenges are squeezing profit margins, slowing down 5G deployments, and hampering innovation. CSPs are encumbered by rising network and spectrum costs, rigid resources, vertical stacks locked in silos, and unforeseen shifts in demand.
The realization of 5G’s full benefits and capabilities depends on a flexible, open, and transparent architecture.
The case for a horizontal platform approach ,
The complexity of integrating/coordinating network functions and managing multiple services demands a simple, automated approach that speeds up 5G deployments, streamlines operations, reduces risks, and decreases costs.
A horizontal architecture, in contrast to a vertical, siloed architecture, shares a common platform and uses the same hypervisor, storage and networking solutions. The architecture is simpler, less expensive, and easier to maintain. This commonality brings consistency and efficiency to operations. CSPs can use the same tools for operational tasks like patching, monitoring, alarm handling, fault handling, and troubleshooting.
Platforms that are horizontally integrated can also minimize the total cost of ownership compared with silo-based, vertically integrated deployments. Horizontal platforms enable applications to be easily automated, whereas the vertical alternative needs more tools, processes and is more likely to lock service providers into one vendor offering. The multi-vendor approach gives CSPs greater flexibility and allows them to benefit from an accessible, smartly distributed ecosystem.
By adopting this horizontal platform approach, CSPs can avoid creating new network silos while building out 5G. At the same time, they gain a simplified, consistent overlay across their complex heterogeneous environments, making them more easier to manage, scale, and secure.
The path to deploying 5G quickly and cost-effectively is paved by adopting a common horizontal architecture, cloud-native technology, multi-layer automation, and built-in security.
- Common horizontal infrastructure plays a crucial role in modernization by combining clouds and multi-vendor networks into a single platform. With common infrastructure, CSPs can avoid creating new network silos while building out 5G. Horizontal architectures provide centralised management at scale by simplifying complex heterogeneous environments.
- Cloud-native principles are a key component of modernization. Kubernetes, containers, and microservices provide ways for establishing the flexible operations required to thrive with 5G. The automated operations and agile methods that come with cloud-native technology help streamline the development, deployment, and management of 5G services.
- Multi-layer automation can bring together multi-cloud resources in a centralized orchestration system and then use intent-based placement for optimization. An integrated approach to service assurance that takes advantage of machine learning can monitor the whole 5G landscape, predict impacts of network changes, and automate actions to further optimize the network.
- Built-in security can protect the infrastructure, network, and applications from the inside out
Conclusion – A horizontal architectural lays the foundation for future services and business innovation
To capitalize on the opportunities of 5G and to improve their competitive position, CSPs are seeking to overcome the limitations of their existing network architectures and transform their businesses into an agile force with streamlined operations.
They are moving away from traditional OSS stacks to a simplified, pre-integrated horizontal architecture that can be readily configured to support specific service offerings including those that leverage VNF such as SD-WAN, mobile VPN, and 5G network slicing.
A horizontal foundation speeds up the design and deployment of 5G services, automates operations, optimizes resources, and protects dynamic networks. It also helps in making security operations simpler, with faster, agile responses.
By adopting a horizontal architecture combined with other emerging technologies, CSPs can propel into the future with agility and efficiency while maintaining carrier-grade performance and reliability.
Sources
https://blogs.vmware.com/telco/5g-transformation/
https://itseller.us/new-5g-horizons-for-telco-architectures/
