Driving 5G and HFC Convergence with Multi-Tenancy at the Edge

Leading the Way Toward 5G and HFC Convergence with Multi-Tenancy

Carmela Stuart
Director of Future Infrastructure Group

May 5, 2022

CableLabs is making it easier and more efficient to run 5G, DOCSIS and other applications at the edge. Working with our vendor partners, we’ve remediated challenges and improved the way vendors deploy their cloud-native 5G network stacks into a shared, private cloud setting. This early work acts as a catalyst to a vision in which any application workload can be co-located on infrastructure at any location in an operator’s footprint that serves the applications in the most optimal way.

The 10G Lab

CableLabs launched the “10G Lab” where the goal is to deploy multiple 5G cores and vRAN systems alongside a cable hybrid fiber-coax (HFC) network. More specifically, these applications will run in a cloud-native, multi-tenant, bare-metal environment that starts the journey toward a fully converged network. By co-locating 5G and HFC running as containers on shared infrastructure managed by a common management layer, this first step toward platform convergence enables operators to reap the rewards that come with this type of architecture, including:

  • reduced operating expenses (OpEx), such as power consumption, and reduced capital expenses (CapEx), including hardware costs and facilities to house the hardware, such as head-end or hub locations;
  • the elimination of over-provisioned environments by matching resources to demand (the environment is scaled to optimize network stack operation);
  • automated as opposed to manual deployment of services (more OpEx savings); and
  • the ability to create dynamic, customized network topologies at different geographical locations that improve throughput and reduce latency for subscribers.

In addition, decoupling the network software from proprietary hardware increases the cadence of system upgrades, which reduces the time to market for new capabilities and optimizations.

The following diagram shows the current and future focus of the 10G Lab:

Leading the Way Toward 5G and HFC Convergence with Multi-Tenancy at the Edge

The Experience

CableLabs’ experience working with vendors to deploy network stacks into a multi-tenant environment, initially 5G, has been captured in a recently published white paper (open to the public) entitled “Best Practices for Deploying 5G into a Shared Environment.” There’s also a GitHub repository (referenced in the white paper) that shares the scripts for automating the deployment of a Kubernetes cluster tailored for 5G workloads. The white paper captures learnings related to enhancing security and ensuring that vendor applications are deployed such that they don’t interfere with one another when running in a shared environment. Other areas of discovery include optimizing network configurations, balancing resource allocations, enabling performance settings (particularly for user-plane operations for 5G) and easing the management of multiple applications on shared infrastructure. Be sure to check out the conference recording on this topic at the Envision Vendor Forum 2022 (day 2).

What’s Next

CableLabs has already worked with 5G vendors in the 10G Lab; however, later this year, we plan to expand the lab capabilities with open-source 5G cores and vRAN solutions, as well as a vCCAP. When a level of convergence is achieved—initially through co-locating the 5G and HFC network stacks into a shared environment, and eventually by establishing a tighter integration between 5G and cable wireline technologies through a shared core to support both access network types—operators will further benefit from this singular, multi-modal communication platform that will reduce network complexity, cut operational costs, improve quality and create new business and service opportunities.

Get Involved

The 10G Lab will play a part in three key initiatives. It will:

  • provide a foundation for convergence-related activities, including executing convergence use cases of interest to our members;
  • provide an environment for hosting the 5G challenge and other interoperability events; and
  • be leveraged for proof of concept (POC) demonstrations as part of CableLabs’ innovation initiatives.

The 10G Lab is open to collaboration with CableLabs’ members and the NDA vendor community. We encourage members and vendors to partner with us to showcase the value of running applications in this shared, cloud-native environment. Please contact Carmela Stuart with your ideas! You can also join the CableLabs community as an NDA vendor.