Title:Theoretical Foundations and Practical Implementation of Semantic Communications

Abstract:The deep integration of communication and artificial intelligence is emerging as a core engine to break through traditional communication bottlenecks and reshape the network ecosystem. This paper systematically explores the strategic positioning, theoretical framework, and key technologies of Semantic Communications (SeC), proposing a novel communication paradigm based on semantic information theory. Through theoretical innovations such as semantic entropy and semantic mutual information, SeC transcends Shannon's limit and establishes a technical architecture encompassing semantic-based physical models, semantic knowledge bases, and model-division multiple access (MDMA). With its features of endogenous intelligence, semantic-driven optimization, and multi-dimensional convergence, SeC empowers typical 6G scenarios, achieving breakthroughs in communication efficiency, network intelligence, and multi-agent collaboration. Despite challenges in theoretical metrics, industrial coordination, and global competition, and will drive communication systems from "connecting everything" to "empowering everything," providing a critical pathway for the future communication systems development.

Finally, the report presents our team's key technological breakthroughs and practical engineering achievements in this field.

Biography:Ping Zhang, academician of Chinese Academy of Engineering, IEEE Fellow, Professor with Beijing University of Posts and Telecommunications, Ph.D. supervisor, the director of State Key Laboratory of Networking and Switching Technology. He is the Editor-in-Chief of Journal on Communications. He is a member of IMT-2020 (5G) Experts Panel, a member of Experts Panel for China’s 6G development, and has received many awards and honors including the Grand Prize for the National Science and Technology Progress Award. He is one of the most well-known key contributors to the development of China-pioneered mobile communication technologies, which have been widely adopted on a global scale. His research interests include next-generation mobile networks, semantic communications, and intellicise communication system.