Hello Experts.
One question regarding SFN in MIB
MSB - 6bits LSB - 4 bits
1023 - 0011 1111 1111
0011 1111 → MSB
1111 → LSB
Remain 4 bits are derived from PBCH payload → i didn’t understood this point.
Why 4 bits are send separately?
And when it says PBCH payload, what does that mean?
MIB also goes through PBCH only ?
Also, why didn’t they make 6 or 5bits in LSB to send through PBCH payload?
It will reduce the MIB size further down.
susbose10:
Remain 4 bits are derived from PBCH payload → i didn’t understood this point.
Why 4 bits are send separately?
And when it says PBCH payload, what does that mean?
MIB also goes through PBCH only ?
Pbch load means th3 content of PBCH.
MIB is layer 3 content of layer 1 PBCH.
susbose10:
Also, why didn’t they make 6 or 5bits in LSB to send through PBCH payload?
It will reduce the MIB size further down.
Because MIB in 5G is 24 bits, are needed for something else cannot be occupied by 5-6 bits of LSB of SFN.
4 is enough.
O.B
October 19, 2022, 11:55pm
3
MIB is L3 generated by CU and PBCH is L1 generated by DU
Using this technique, CU will generate MIB less frequent since its contents will not change every frame