Benchmark for BLE receiver performance

[barbiz]

Hello,

we are testing the BLE ADV capabilities and also MESH performances on NRF54L15.

We verified that, in conditions of continuous scanning (interval = 30ms), the packet delivery rate (PDR) is < 100% both for 1M and CODED. Experiments were done in a shieldbox where no other BLE packets were detected.

Actually, < 100% is expected due to at least two effects:

• receiver retuning time
• unlucky packet alignment when the receiver retunes from CH39 back to CH37.

However, we don't have any benchmark to compare with.

Is there any specification on the PDR that advertising + scanning shall show in the best possible conditions? (like anechoic chamber, only two boards, continuous scanning)?

This would be helpful to validate our setup and our prorotype.

Thanks much

Marco

[Hung Bui]

Hi Marco, 
I'm afraid we don't. We do intensive test with the chip but on lower layer on the RFPHY layer directly, not on the BLE GAP layer. 

If you increase the scan interval and can find that the PDR scale up with it then it prove it has nothing to do with RF communication but more about the period when the radio has to switch channel. Also it may have something to do with the advertising interval as the radio is also closed when it receives a packet and then active again after the packet is processed.