Throughput BLE Meshv4 nRF52840

RE: Throughput BLE Meshv4 nRF52840

PaulGui — Fri, 05 Jun 2020 13:14:19 GMT

Thanks again !
For info, do you have an idea when sensor model will be out ? Or if an actual model could send logs ?

RE: Throughput BLE Meshv4 nRF52840

Hung Bui — Fri, 05 Jun 2020 13:07:50 GMT

Yes, connected BLE has the theoretical through put of 1.4Mbps (when running at 2Mbps) and 700kbps (when running at 1Mbps) . I have seen the practical throughput close to these number (~1.3Mbps and ~600kbps).

RE: Throughput BLE Meshv4 nRF52840

PaulGui — Fri, 05 Jun 2020 12:58:53 GMT

Thanks for your reply !
Do you have practice throughput of classic BLE (p2p) on advertising and connected pls ?

Cause i want to compare throughput between Classic BLE (p2p) and Ble Mesh to know if it's better to implement Ble Mesh when sensor model will be out.
Even if i'm expecting a huge gap between BLE and BLE Mesh
Sincerely

RE: Throughput BLE Meshv4 nRF52840

Hung Bui — Fri, 05 Jun 2020 12:50:15 GMT

Correct, 31 bytes payload for the advertising packet (37 bytes with the overhead) and 11 byte for actual mesh data.

The 3.45 kbps throughput is calculated on the 11 bytes of of actual payload.

RE: Throughput BLE Meshv4 nRF52840

PaulGui — Fri, 05 Jun 2020 12:02:16 GMT

Thanks for your quick reply !
Just to be sure, Mesh messages have 31 bytes payloads but only 11 bytes for real information (string etc) ?
And your "3.45kbps point to point" is throughput for the entire message or only the 11 bytes of info ?
Sincerely

RE: Throughput BLE Meshv4 nRF52840

Hung Bui — Thu, 04 Jun 2020 15:27:44 GMT

1) Yes, it's mainly based on Bluetooth 4.0 however some Bluetooth 4.2 feature (Long ATT MTU) is supported on the GATT bearer connection but it doesn't related to the mesh performance.

2) Correct. Larger payload will be transmitted on segmented packets.

3) It's the payload of the advertising packet (37). It's not the payload of mesh packet.

RADIO_MAX_PACKET_LEN is the radio hardware max payload.

4) In our test here the mesh throughput is roughly 3.45kbps point to point.