# 6G Use Cases and Scenarios: A Comparison Analysis Between ITU and Other Initiatives
## 11 The 6G Enabling Technology Categories
This includes all sensors and technologies supporting the data acquisition process, e.g., multimedia sensors, active detection and ranging (e.g., Lidar, radar), environmental sensors, wearable sensors, and device status sensors. * **Actuators**. This comprises technologies for actuators, e.g., robots, Cobots, Unmanned Aerial Vehicles (UAVs), and traditional actuators e.g., hydraulic, pneumatic, electric, thermal, and magnetic;
* **Management Platforms and Applications**. This refers to the hardware/software platforms running applications and providing services for orchestrating, managing/controlling systems, e.g., based on Digital Twins, cloud, AI, Machine Learning (ML), and virtualization. Edge Cloud Computing (ECC) is also considered due to its crucial role in advanced video streaming applications and the Content Delivery Network (CDN). These network components and technologies are already present in the legacy 5G networks, especially for multimedia and streaming applications. They can support 5-10 ms latency applications. Moreover, in the case of 6G, they are native and able to support 1 ms latency. This approach already forces the broadcaster company to identify new business activities that continue to also be present in the future 6G [37]. The communication technologies have been first classified into broadband and narrowband, as they provide different transmission capacities in terms of available bit rate per user. From an in-depth analysis of the descriptions of the use cases and looking at other papers on 4G and 5G, we have observed that the capabilities for a communication system to provide very low latency and extended coverage are important distinguishing features [6; 38; 39]. The very low latency capability is necessary for supporting latency-sensitive applications [40; 41]. Extended coverage refers to the capability to guarantee access over relatively large (spatially extended) areas, e.g., metropolitan and wide areas. The localization technology includes, in a broad sense, services provided by GNSS systems, such as the Global Positioning System (GPS) and/or localization services provided by local area technologies and from mobile radio systems [42]. HCI technologies are used to allow human-machine interaction [43; 44]. These can include traditional or advanced components. The first ones can be represented by a keyboard and touchscreen (e.g., tablets). The second ones include devices implementing VR/AR/XR technologies, holography (with haptic devices able to reveal facial expressions, hand movements, etc. ), and virtual personal assistants [45]. Within the data acquisition technologies, we have included multimedia sensors, as well as devices for active detection or ranging (e.g., Lidar or Radar), environmental sensors (e.g., humidity, pressure, pollution) and wearables for the monitoring of human vital signs (body pressure, body pressure, heart rate, and respiratory rate). With the data acquisition phase, the data are collected by the sensors. These data are used to be processed for making decisions and then to perform the corresponding action through the actuators. We grouped these devices into two main categories, traditional technologies (DACT-TIA) and advanced technologies for actuation, as in Table 10. In the first category, we have included hydraulic, pneumatic, electric, thermal, and magnetic, according to [46]. In the second category, we have included robot, Cobot, and UAV. Finally, in the management platforms and applications' technologies, we have included all the services and (software) applications enabling the realization of 6G services running in the cloud and/or on the edge cloud platforms. Even AI/ML and virtualization techniques and technologies have been included in this category [47]. The mentioned technologies are important and relevant for each scenario we considered. For example, the immersive communication use case proposed by ITU foresees the inclusion of telepresence technology and holographic communications.