How Cell Size is determined from length of preamble format?

[RFSpecialist]

@Vicky

I am also looking for the information like what is random access window time at gNB to feedback to UE again as Msg2.

Here is a typical 5G NR rach scenario:

As you see in the picture above gNodeB replied with msg2 within 3msec from the time UE was sending Msg1.