Bluetooth: Controller: Auxiliary Offset 510 us [@40.612 706 125]

[Tovms zhangsan]

Hi, Nordic Bluetooth Controller Teams, I have a question. I see that the Aux offset of Bluetooth extended broadcast on NCS is fixed at 330us. What is the consideration behind this? Is there any benefit in doing so? This part is not actually specified in the Core Spec.

[Tovms zhangsan]

What I mean is that what kind of considerations is the current ncs 330us based on, and why not use a larger offset?

[yuxuan.cai]

Using a longer aux offset will, for instance, increase power consumption and block other radio activities. Is there a specific use case where a long aux offset is required?

[Tovms zhangsan]

I just saw that the Auxoffset of the Zephyr open source Bluetooth Controller stack is larger than that of NCS, which gives me the feeling that a smaller one is more appropriate.

[Priyanka]

Hi,

The fixed 330us offset is used for SDC scanner optimization.

-Priyanka