I doubt there is much documentation. What Aruba OS version are you running?
This is from the data sheet
IOT PLATFORM CAPABILITIES
The 303H Series provides integrated Bluetooth capabilities
to enable Meridian and IoT-based location services, asset
tracking, and mobile engagement services. For expanded
use cases, an IoT expansion radio can be added to support
the Zigbee protocol. These features allow organizations to
leverage the AP as an IoT platform, which eliminates the need
for an overlay infrastructure and additional IT resources.
https://www.arubanetworks.com/assets/ds/DS_AP303H.pdf
Apparently my IAP207 have BLE too with similar wording. Since IoT is mentioned, I wonder what else they support other than their Meridian product.