What is commonly used value for PRACH Freq offset for LTE TDD and FDD cell?

RAN
,
1

Hi Experts.

What is commonly used value for PRACH Freq offset for LTE TDD and FDD cell?

What is use of high speed flag in RACH config?

2

Is there any table in LTE to check PRACH Freq offset value?
I need value for TDD.

Anyone having idea?
Is there any table in 3gpp or need to calculate?