RA-RNTI Calculator

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RA-RNTI Calculator

The RA-RNTI associated with the PRACH occasion in which the Random Access Preamble is transmitted, is computed as:

RA-RNTI = 1 + s_id + 14 × t_id + 14 × 80 × f_id + 14 × 80 × 8 × ul_carrier_id


Where: s_id:

the index of the first OFDM symbol of the specified PRACH (0 <= s_id < 14)

t_id:
the index of the first slot symbol of the specified PRACH in a system frame (0 <= t_id < 80)
S_id:
the index of the the specified PRACH in the frequency domain(0 <= s_id < 8)
ul_carrier_id :
UL carrier used for Msg1 transmission (0 = normal carrier, 1 = SUL carrier)

s_id

t_id

f_id

ul_carrier_id



Answer







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