Modern developments in mobile communication networks pose challenges for
the overall security of these systems. First, networks adopt the O-RAN architecture and its interface specifications, which allows to deploy third-party applications within the
network. These applications may execute untrusted code or expose additional
attack surfaces. Second, joint communication and sensing introduces environmental information as a new data type that is processed within the network, presenting new privacy challenges. Third, to improve energy efficiency, specialized accelerator hardware is deployed for use cases such as artificial intelligence. Sharing such hardware securely amongst running workloads requires advanced isolation mechanisms. To address these challenges, we evaluate the suitability of the M³ platform for radio signal processing workloads. M³ is a hardware/software co-designed system architecture with hardware-integrated isolation mechanisms. In this paper, we answer the question how the overheads introduced by the M³ hardware isolation mechanisms impact the latency of signal processing workloads.
