RACH transmitted in symbols calculation

Specs & Protocol Testing
1

Hello Experts,
I’m trying to understand the calculation of RACH where it can be transmitted in symbols.
My PRACH index is 75, so according to the table I have some relevant values abd have the formula for calculating the slits of where the rach can be transmitted.
It’s 5g NR SA.
l = {14,20} where RACH can be transmitted in symbols (slots) 14 and 20 for 60 kHz.
But my SCS is 120 kHz so how I can find out the slots of 120 SCS?

image
image1600×353 99.4 KB

Here is the formula:

image
image1600×1110 497 KB

2

Try here:

http://sharetechnote.com/html/lte_toolbox/Matlab_LteToolbox_5G_PRACH_FR2_120.html

Click on 75 link.

3

image
image1080×960 161 KB

Yes I understand but once again how do I find the slots?
For instance here it’s 35, 39, 75, …,159.
I mean how did we calculate those slots?
By giving us the table of PRACH index of course. It given us information to formula as I showed above.
But it’s for 60 kHz and not for 120 kHz.

4

It is for 120 KHz:

image
image838×371 141 KB

https://www.sharetechnote.com/html/lte_toolbox/Matlab_LteToolbox_5G_PRACH_FR2_120.html

5

I understand but it’s like already calculating and not shown how to calculate those slots .
So my query is like we dont need to calculate?
Just to refer to that table?

I mean we don’t need to concern on how to calculate the slots mathmatically, just to refer to that table? For all prach indexes the slots already calculated.