LTE Trove — virtual 4G network lab

The problem

Testing and validating cellular network protocols traditionally requires dedicated RF testbenches, physical eNodeB base stations, software-defined radios, RF shielding enclosures and programmable USIM cards — tens of thousands of dollars per bench. Physical test rigs create constant contention across engineering teams, introduce hardware misconfigurations that are difficult to isolate, and demand hours of manual wiring and flashing just to test a single core configuration or handover scenario. There was no repeatable, software-defined way to spin up an isolated cellular sandbox for automated QA, protocol experimentation or training.

Approach

We built LTE Trove as a cloud-native 4G LTE simulation platform and virtual network operations centre, powered by OpenAirInterface RF simulation (rfsim). The backend pairs Node.js with Dockerode to orchestrate containerised Evolved Packet Core microservices — HSS, MME and the serving and packet gateways — alongside a Cassandra subscriber registry, isolated Linux bridges and kernel TUN interfaces.

On the frontend, a React 19 application with Zustand state management and WebSocket event streaming gives operators an interactive topology canvas, live 3GPP signalling waterfall inspection across S1AP, NAS, S6a and X2AP, virtual UE handset commissioning, and an automated milestone verification engine for continuous regression testing.

Outcome

The dependency on specialised lab hardware is gone: complete, isolated 4G LTE networks now spin up on standard compute workstations and in CI. Protocol engineers configure multi-eNodeB topologies, simulate subscriber authentication, execute X2 handovers and verify end-to-end data session flows through automated suites in minutes rather than days. Network state and protocol captures are fully deterministic, which is what makes cellular regression testing, protocol debugging and telecom training repeatable instead of bench-dependent.