I just read
Bluetooth Direction Finding, added to the Bluetooth spec as part of Bluetooth 5.1 to allow devices to measure angle of arrival and angle of departure (AoA and AoD) to position devices to an accuracy of under one metre (around 3.3 feet.)
(read it here).
I am excited about the idea, but want to be sure that I have understood it.
If I want to track people/objects and report their locations to a server, I imagine that I need a BLE Gateway/router.
I assume that the devices would send advertising packets, the gateway would receive these, detect the device location and send it via HTTP(S) to the server.
I also assume that only the BLE gateway/router needs to be BLE 5.1, since it is the one performing direction finding.
Are my assumption correct? Does it work that way? Can a BLE 5.1 gateway perform direction finding on a BLE 4.0 advertisement?
I welcome any more info, such as tutorials, videos, books, etc