srsRAN 4G is an open source software-defined radio implementation of 4G LTE that provides a complete software stack for building LTE networks.
The project addresses the need for accessible, programmable 4G infrastructure by implementing the LTE standard in software rather than relying on proprietary hardware solutions. It provides components for user equipment, base stations, and evolved packet core functionality, allowing developers and researchers to build and experiment with LTE networks using commodity SDR hardware. The modular architecture separates concerns across the stack, enabling users to deploy individual components or integrate them into larger systems.
The tool suits research institutions, network operators exploring software-defined approaches, and developers building custom LTE deployments or studying wireless protocols. It works well for laboratory environments, private network deployments, and educational purposes where full control over the LTE implementation is valuable. Organizations should evaluate whether their use case requires the flexibility of a software implementation versus the performance and maturity of commercial solutions, and whether their hardware platform is supported by the project's SDR drivers.
Development activity shows consistent engagement with the codebase through regular commits addressing bug fixes and incremental improvements. The project maintains active issue tracking with responses to user-reported problems. Documentation is kept current alongside code changes, reflecting ongoing effort to support users implementing the software. Pull requests receive review and integration, indicating sustained maintenance of the contribution process.
