How to increase the BLE data transfer speed

[Yair H]

Hi,

I am implementing a BLE central that is based on ble_app_uart example using nRF52833 with a soft device version 7.2.0.

I have noticed that a single packet download is much slower comparing our other BLE central based on the CSR chip.

The packet download using the CSR chip takes only 3.5ms while using the nRF chip it takes about 18ms.

In both cases I used the same BLE peripheral.

how can I decrease the packet download time to the minimum?

Y.H

[Hung Bui]

Hi Yair, 
Could you please give more information about how you configure the central device, which connection interval you used.

How do you send the data from the peripheral to the central? 
How did you measure the download time ? 

I would suggest to get familiar with the BLE sniffer to capture the packet over the air. It will give deeper insight on  how the communication is and how to improve.