US-based Radisys, aligned with Indian operator Jio, has been looking to repurpose its core LTE product for private implementations since 2018, as a basis to provide a compact 5G core network solution. “We were using our inhouse LTE core for private networks. But with 5G, we’ve built everything from the ground up for private networks,” explains Ganesh Shenbagaraman, head of integrated products and ecosystems at the company.
In late 2019, the firm put a private 5G core into an operator lab to simulate a modified version of its network, testing for up to 57 base stations in standalone 5G, with support for throughput of about 20 Gbps in the user plane function (UPF). The simulation, it reckons, saw it scale its cut-down private 5G footprint from a few hundred to a few thousand users. “[We created a] low-end network-system in-a-box,” explains Shenbagaraman.