throughput measurement NUS

RE: throughput measurement NUS

Kenneth — Wed, 22 Sep 2021 13:27:03 GMT

It looks correct, though you can try for comparison the central uart example as peer for comparison.

Kenneth

RE: throughput measurement NUS

Martijn Jonkers — Wed, 22 Sep 2021 06:19:30 GMT

ok, thank you. I found both the pages, that is how I got to the ~1327 kbps. But to be sure, this is an expected max speed for ble using a phone / pc? The ~1327 kbps will never be reached? And my measurement method is correct?

RE: throughput measurement NUS

Kenneth — Tue, 21 Sep 2021 11:03:25 GMT

Hi,

You may find some theoretical and measured values for different configurations on these two pages:
https://infocenter.nordicsemi.com/topic/sds_s132/SDS/s1xx/ble_data_throughput/ble_data_throughput.html
https://www.novelbits.io/bluetooth-5-speed-maximum-throughput/

I expect that a phone will not give one specific BLE link the entire 100% duty cycle of the radio, the max throughput will depend on the supported features, connection parameters and the phone OS/model. If you measure 1050kbps I would say that is pretty good. If you want to know more details on what is the limiting factor for this specific measurement here you will need to provide an on-air sniffer log (e.g. nrf sniffer) so we may see the features, parameters and duty cycle. I expect that if you tried this on another phone manufacturer or OS it would vary.

Kenneth