CSI-RS sequence generation and mapping and DMRS scrambling ID configuration
In some embodiments, an apparatus of a Fifth Generation (5G) NodeB (gNB) comprises one or more baseband processors to encode one or more channel state information reference signals (CSI-RS) to be transmitted to a user equipment (UE). The one or more CSI-RS signals comprise a complex sequence mapped to a resource element (RE) such that all CSI-RS ports use an identical sequence for the one or more CSI-RS signals in a symbol. In other embodiments, the gNB comprises one or more baseband processors to encode a scrambling identity (ID) configuration for one or more demodulation reference signals (DMRS), wherein the scrambling ID configuration indicates one of two scrambling IDs to be signaled to a UE.
1. An apparatus of a Fifth Generation (5G) NodeB (gNB), comprising:
one or more baseband processors to encode a scrambling identity (ID) configuration for one or more demodulation reference signals (DMRS), wherein the scrambling ID configuration indicates one of two scrambling IDs to be signaled to a user equipment (UE); and
a transmitter to transmit the scrambling ID configuration to the UE, wherein the scrambling ID configuration is transmitted to the UE using transmission configuration indication (TCI) states.
2. The apparatus of claim 1 , wherein the one or more baseband processors encode the one or more DMRS using, at least, a selected one of the two scrambling IDs and the transmitter transmits the one or more DMRS in the physical downlink shared channel (PDSCH).
3. The apparatus of claim 1 , further comprising:
a receiver to receive one or more DMRS on a physical uplink shared channel (PUSCH) from the UE, wherein the one or more baseband processors decode the received one or more DMRS using, at least, a selected one of the two scrambling IDs.
4. The apparatus of claim 1 , wherein the transmitter transmits downlink control information (DCI) to the UE, the DCI indicating that the scrambling ID is to be signaled using the TCI states.
5. The apparatus of claim 1 , wherein the TCI states are part of a signal synchronization block (SSB).
6. The apparatus of claim 1 , wherein the TCI states are part of a channel state information reference signal (CSI-RS).
7. One or more non-transitory storage media having instructions stored thereon that, when executed by an apparatus of a Fifth Generation (5G) NodeB (gNB), result in:
encoding a scrambling identity (ID) configuration for one or more demodulation reference signals (DMRS), wherein the scrambling ID configuration indicates one of two scrambling IDs to be signaled to a user equipment (UE); and
transmitting the scrambling ID configuration to the UE, wherein the scrambling ID configuration is transmitted to the UE using transmission configuration indication (TCI) states.
8. The One or more non-transitory storage media of claim 7 , further resulting in:
encoding the one or more DMRS using, at least, a selected one of the two scrambling IDs; and
transmitting the one or more DMRS in the physical downlink shared channel (PDSCH).
9. The One or more non-transitory storage media of claim 7 , further resulting in:
receiving one or more DMRS on a physical uplink shared channel (PUSCH) from the UE; and
decoding the received one or more DMRS using, at least, a selected one of the two scrambling IDs.
10. The one or more non-transitory storage of claim 7 , wherein the transmitter transmits downlink control information (DCI) to the UE, the DCI indicating that the scrambling ID is to be signaled using the TCI states.
11. The one or more non-transitory storage of claim 7 , wherein the TCI states are part of a signal synchronization block (SSB).
12. The one or more non-transitory storage of claim 7 , wherein the TCI states are part of a channel state information reference signal (CSI-RS).
13. An apparatus of a user equipment (UE), comprising:
a receiver to receive scrambling identity (ID) configuration from a Fifth Generation (5G) NodeB (gNB); and
one or more baseband processors to decode the scrambling ID configuration for one or more demodulation reference signals (DMRS), wherein the scrambling ID configuration indicates one of two scrambling IDs to be signaled to the user equipment (UE) and wherein the scrambling ID configuration is transmitted to the UE using transmission configuration indication (TCI) states.
14. The apparatus of claim 13 , wherein the receiver receives the one or more DMRS in the physical downlink shared channel (PDSCH) and the one or more baseband processors decode the one or more DMRS using, at least, a selected one of the two scrambling IDs.
15. The apparatus of claim 13 , wherein the one or more baseband processors decode one or more DMRS using, at least, a selected one of the two scrambling IDs, the apparatus further comprising:
a transmitter to transmit the one or more DMRS on a physical uplink shared channel (PUSCH) to the gNB.
16. The apparatus of claim 13 , wherein the receiver receives downlink control information (DCI) indicating that the scrambling ID is to be signaled using the TCI states.
17. The apparatus of claim 13 , wherein the TCI states are part of a signal synchronization block (SSB).
18. The apparatus of claim 13 , wherein the TCI states are part of a channel state information reference signal (CSI-RS).