| Fueled by the availability of more data and computing power, recent breakthroughs in cloud-based machine learning (ML) have transformed every aspect of our lives from face recognition and medical diagnosis to natural language processing. However, classical ML exerts severe demands in terms of energy, memory, and computing resources, limiting their adoption for resource-constrained edge devices. The new breed of intelligent devices and high-stake applications (drones, augmented/virtual reality, autonomous systems, and so on) requires a novel paradigm change calling for distributed, low-latency and reliable ML at the wireless network edge (referred to as edge ML). In edge ML, training data are unevenly distributed over a large number of edge nodes, which have access to a tiny fraction of the data. Moreover, training and inference are carried out collectively over wireless links, where edge devices communicate and exchange their learned models (not their private data). In a first of its kind, this article explores the key building blocks of edge ML, different neural network architectural splits and their inherent tradeoffs, as well as theoretical and technical enablers stemming from a wide range of mathematical disciplines. Finally, several case studies pertaining to various high-stake applications are presented to demonstrate the effectiveness of edge ML in unlocking the full potential of 5G and beyond. KEYWORDS | 6G; beyond 5G; distributed machine learning (ML); latency; on-device machine learningML; reliability; scalability; ultrareliable and low-latency communication (URLLC).
On the other hand, REF studies the fundamental blocks of machine learning i.e., neural network architectures, training and inference operation, and communication scenarios for several use cases pertaining to various mission critical applications in 5G and beyond.
Wireless Network Intelligence at the Edge
Proceedings of the IEEE
Proceedings of the IEEE
Computer Science Mathematics