What is the use of deltaPreambleMsg3 in SIB2?

Hi Experts ,

What is the use of deltaPreambleMsg3 in SIB2?

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Transmit power offset (deltaPreambleMsg3) can be used to increase the transmit power of MSG3 .

The increase in deltaPreMsg3 will increase the P0_NOMINAL_PUSCH for the Msg3 and also reduce the path loss threshold used for type B random access preamble.

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Can you provide a source for this information, I want to read it in detail. Unable to find enough information from the internet.

For details, see 3GPP TS 36.213 (Power control)

Thanks @cheikh789 for you reply…