This book constitutes the thoroughly refereed post-conference proceedings of the 15th EAI International Conference on Mobile Multimedia Communications, MobiMedia 2022, held in July 22-24, 2022. Due to COVID-19 pandemic the conference was held virtually. The 29 full papers presented were carefully selected from numerous submissions. The papers are organized in topical sections as follows: Internet of Things and Wireless Communications Communication Strategy Optimization; Cyberspace Security on Cryptography, Privacy Protection, Data Sharing, Access Control and Task Prediction; Neural Networks and Feature Learning; and Object Recognition and Detection.