Читать книгу Industry 4.0 Vision for the Supply of Energy and Materials - Группа авторов - Страница 52

The 5G solution that serves a large number of MTC applications is mMTC, which deals with scalable connectivity for massive number of devices. 5G offers wireless communication to over 1 million IoT terminals (with diverse QoS requirements) per square kilometer of area [169]. mMTC data communication is typically infrequent, making it ideal for alerting systems or periodic sampling (e.g., indicating manufacturing equipment failure and low frequency environmental sensing). This feature is suitable for a wide range of use cases across utilities, industrial campuses, and logistics. mMTC should handle different exceptional challenges, such as varied and intermittent traffic, QoS provisioning, large signaling overhead, and congestion in RAN [137].