|Use Case Description: AR IoT control|
Many IoT devices are present in the home and several of them such as smart light bulbs, smart curtains, air conditioning systems, heaters or multimedia devices are present in multiple numbers in different rooms within the home. While some IoT devices are at a fixed position and rarely move (light bulbs, heaters, curtains…) others are portable and nomadic by nature (portable speakers, vacuum cleaner robot, wearable devices…).
There are today many protocols that can be used for IoT (Wifi, Bluetooth, Zigbee TM, io-homecontrol TM, Z-wave TM but also LTE, NB-IoT and now Sidelink).and in the future there will be more and more IoT devices with 5G connectivity. While it is likely all IoT devices within a single home are interconnected through at least one (or more) gateway, D2D communications may also be used when available as it is likely to be more battery efficient for AR glasses.
As the user walk through his home, his AR glasses regularly scan the indoor environment to track the user's position in the home. While there could be several users wearing AR glasses in the same room, the environment reconstruction may also be using volumetric information from other IoT devices in the room (for instance security cameras with depth sensors). In terms of data exchange, upload data to 5G network may be video, depth-maps, sparse point clouds and also sensor information such as gyroscope or accelerometer.
Additionally, thanks to AR glasses' scanning, the home IoT system keeps track of IoT devices positions. Actual identification of an IoT device may also be done in the AR glasses themselves
Typically, the IoT home system runs on the edge network and information sent back to the AR glasses includes metadata information about IoT devices and environment, simple textual overlays for UIs. More advanced UIs would also probably make use of elements such as video or 3D objects
And finally, for D2D communications with 5G enabled IoT devices, control and status information is also exchanged between IoT devices and the AR glasses.
The use case addresses several scenarios:
ARDegrees of Freedom:
Interactive, Split, device-to-deviceDevice:
|Requirements and QoS/QoE Considerations|
|5G's low-latency high-bandwidth capabilities are used to provide real-time operation of IoT devices and high-speed upload of sensor information (video, Lidar point clouds). Continuous connectivity is required for the sharing of local information to keep tracking user's position and position of IoT devices in the home so that home IoT system can maintain a real-time map of the home and its user. The underlying AR maps are expected to be accurate and up to date. In order to optimize energy consumption on the glasses, split processing is favoured and efficient compression technology is required for exchanges with the home IoT system. Device-to-device communication may also be used with some IoT devices.|
|Potential Standardization Status and Needs|
The following aspects may require standardization work: