Benefits of IMS Data Channels for Voice Enrichment in 4G/5G: A Simulation-Based Approach. As mobile communication becomes more advanced and focused on user experience, there is growing demand for services that enrich voice and video calls in real time such as transcription, translation, emotion detection and file sharing. Traditional networks, though reliable, cannot guarantee the performance required for these new features. This thesis focuses on a promising technology for future mobile services: the IMS Data Channel. It allows real-time exchange of data (like text, files or emotional feedback) during a voice or video call. The IMS Data Channel is an extension of the IP Multimedia Subsystem (IMS), which telecom operators already use to manage services over 4G, 5G and Wi-Fi.