about bearer

[Liaokeyun]

I feel confused about bearer. what's the difference between mesh-bases bearer and PB-ADV bearer or PB-GATT? there is little knowledge about  mesh-bases bearer within mesh profile v1.0。 

And is the bearer similar to MAC layer which is defined in computer network. Thanks very much for your help.

[Joakim Jakobsen]

Hi. 

The Bearer Layer defines how PDUs are transported between nodes using an underlying Bluetooth Low Energy stack. Currently, two bearers are defined, the Advertising Bearer and the GATT Bearer.

PB-ADV is used for provisioning devices within radio range of the provisioner.

PB-GATT is used for provisioning mesh devices by (legacy) devices that only support the GATT bearer.

Best regards, 
Joakim

[Liaokeyun]

Hi Joakim，I am not still able to get PB-GATT clear, I have seen three definition in the struct nrf_mesh_prov_bearer_type_t within nrf_mesh_prov_bearer.h resulting in feeling confused about Mesh-based provisioning bearer. Thanks for your effective reply!

[Joakim Jakobsen]

Hi.  

Liaokeyun said:

feeling confused about Mesh-based provisioning bearer.

NRF_MESH_PROV_BEARER_MESH - Mesh-based provisioning bearer: 

This bearer is defined for the internal use to identify the correct bearer instance that should be used by stack when remote provisioning process is started.

 

See:
examples\pb_remote\client\src\main.c: Line 323

models\experimental\pb_remote\src\pb_remote_client.c: Line 1087

Best regards, 
Joakim