when you don't have to give UL grant then ENB cannot use DCI0 formats then in that scenario it has to use DCI 3./3A to give TPC
we know SRB0 is for rrc message on ccch , SRB1 rrc +nas messages on DCCH and SRB 1 has higher priority than SRB2 ok then y SRB2 is implemented ? when SRB 2 is used ? which type of messages v can expect in SRB2 ?