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What's new in Bluetooth 5.4?
Abhijeet Srivastava - Watch Now - Duration: 13:26
Bluetooth 5.4 introduced many new interesting features such as PAwR (Periodic Advertising with Response), and Encrypted Advertising Data. It also introduced the ESL profile which uses these features. Let's dive a little deeper into this and gain a deeper understanding.
Hi Alice,
I think you have got the gist of it. I can only guess what could have been the motivation for creating bidirectional advertisement. It is sort of the low-energy version of Bluetooth mesh, which provides support for a 1 to-many topology and is near realtime so, it requires pairing and active scanning. So, it wasn't power-friendly and was meant for devices plugged into a power outlet. PAwR on the other hand is intended for low latency applications and is periodical which helps saves energy.
I hope that gives you an idea :)
Thanks for the talk! I’d be curious to learn the motivation for adding bidirectional advertising in BT 5.4. I'm inferring that it was added to allow a central to update date on the peripheral w.o pairing.