The boom in mobile Internet access due to smartphones and tablet PCs has made LTE and LTE-Advanced the fastest growing mobile technologies. Because of the requirements of smartphones and tablet PCs, LTE and LTE-Advanced have been optimized for high data throughput to wireless users. However, when it comes to the requirements for 2020, it is foreseen that many new scenarios and applications need to be supported. These requirements and possible solutions are a topic of 5G research. Traditionally, the official definition of next-generation mobile communications systems comes from the ITU. Today, the future 5G requirements are being studied.

5G will inevitably be a combination of technologies such as Internet of Things (IoT), Massive MIMO, mmWave, etc and even though early research is necessary to build proof of concepts, testing is required at both the hardware and software interfaces to make a commercially viable product. While, there will be lot of advancements that need to be made especially for meeting stringent RF specs for 5G, we believe open source software can provide a reference architecture based on pure software that can be used especially to carry out signalling based tests, conformance tests, end-of-line production tests, etc. The usage of open source stack for 5G wireless testing can bring significant reduction in costs of test equipment, whereas the test equipment vendor can leverage the open source community to improve the quality and stability of test software thus spending fewer resources for software maintenance.