How can a UE know which antenna ports are configured to it from DCI format 1_0 message?

Specs & Protocol Testing
1

Hi all,

How can a UE know which antenna ports are configured to him from DCI format 1_0 message?
In format 1_1 there is a field for the antenna ports, but I didn’t see that field in 1_0.
Thanks

2

MIB (Master Information Block) that CRC_Insertion is an initial phase for BCH_TB block coding, these are 16_bit each bit_pattern refer to how many Antenna_port as shown in picture. So at receiver side and during PBCH_TB decoding phase , it can CRC pattern that embedded from sender side based on Antenna_port number, so UE can know how many Antenna supported at eNodeb side.

How can a UE know which antenna ports are configured to it from DCI format 1_0 message

How can a UE know which antenna ports are configured to it from DCI format 1_0 message
How can a UE know which antenna ports are configured to it from DCI format 1_0 message1003×341 65.8 KB

How can a UE know which antenna ports are configured to it from DCI format 1_0 message
How can a UE know which antenna ports are configured to it from DCI format 1_0 message1375×882 101 KB

3

As far as I know, DCI 1_0 is only for SISO. So no need for Antenna port field (or you can think antenna port is always DMRS port 0 implicitly).
Usually DCI 1_0 is used before RrcSetup and in RrcSetup gNB configures MIMO and DCI 1_1 is used afterwards