RE: Is it possible to use Service Discovery Protocol (SDP) in Bluetooth Mesh applications?

WHui — Fri, 11 Oct 2019 11:27:41 GMT

Hello Edvin,

Thank you so much for your reply and explanations! Now all my doubts are cleared and I understood the concept behind.

Best regards,

WHui

RE: Is it possible to use Service Discovery Protocol (SDP) in Bluetooth Mesh applications?

Edvin — Fri, 11 Oct 2019 10:55:38 GMT

Hello WHui,

Bluetooth Mesh doesn't use Services, like Bluetooth Low Energy does. In Mesh there is something called Models, which behaves quite similar.

However, there are some key differences in Bluetooth Mesh.

All nodes that are connected in the same Mesh Network, using the mesh network key will communicate with one another. That means that whenever a Mesh packet is received, it will be relayed by any node, whether the packet is intended for that node or not.

During provisioning, the provisioner will see what models the node has, and it will choose what virtual channels that the different models will subscribe to and publis to. It will also add another layer of enctyption to that specific model, so if a device in the network isn't subscribing to that particular model, it will not be able to decrypt that packet. Not unless the provisioner has decided that this node subscribes to that channel, and gives it the key.

Best regards,

Edvin