services to future 6G networks. To support the massive Internet-of-Things (IoT) applications
in 6G, fog computing will play a vital role. IoT devices and fog nodes have energy limitations
and hence, energy-efficient techniques are needed for storage and computation services.
We present an overview of massive IoT and 6G-enabling technologies. We discuss different
energy-related challenges that arise while using fog computing in 6G-enabled massive IoT …