Csi-rs sequence generation and mapping and dmrs scrambling id configuration

Abstract

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.

What is claimed is: 
     
         1 . An apparatus of a Fifth Generation (5G) NodeB (gNB), comprising:
 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), wherein 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; and   a memory to store the one or more CSI-RS signals.   
     
     
         2 . The apparatus of  claim 1 , wherein different resource elements occupied by a CSR-RS port have different complex values for the complex sequence. 
     
     
         3 . The apparatus of  claim 1 , wherein the complex sequence comprises a Gold sequence quadrature phase shift keying (QPSK) sequence. 
     
     
         4 . The apparatus of  claim 1 , further comprising a transceiver to transmit the one or more CSI-RS signals to the UE and to receive a channel state information (CSI) report from the UE in response to the one or more CSI-RS signals. 
     
     
         5 . An apparatus of a user equipment (UE), comprising:
 one or more baseband processors to decode one or more channel state information reference signals (CSI-RS) received from a Fifth Generation (5G) NodeB (gNB), wherein 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; and   a memory to store the one or more CSI-RS signals.   
     
     
         6 . The apparatus of  claim 5 , wherein different resource elements occupied by a CSR-RS port have different complex values for the complex sequence. 
     
     
         7 . The apparatus of  claim 5 , wherein the complex sequence comprises a Gold sequence quadrature phase shift keying (QPSK) sequence. 
     
     
         8 . The apparatus of  claim 5 , further comprising a transceiver to receive the one or more CSI-RS signals from the gNB, and to transmit a channel state information (CSI) report to the gNB in response to the one or more CSI-RS signals. 
     
     
         9 . 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 one or more channel state information reference signals (CSI-RS) to be transmitted to a user equipment (UE), wherein the one or more CSI-RS signals comprises a complex sequence mapped to a resource element (RE) such that all CSI-RS ports use an identical sequence for the CSI-RS in symbol; and   processing a channel state information (CSI) report received from the UE in response to the one or more CSI-RS signals   
     
     
         10 . The one or more non-transitory storage media of  claim 9 , wherein different resource elements occupied by a CSR-RS port have different complex values for the complex sequence. 
     
     
         11 . The one or more non-transitory storage media of  claim 9 , wherein the complex sequence comprises a Gold sequence quadrature phase shift keying (QPSK) sequence. 
     
     
         12 . 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 memory to store the scrambling ID configuration.   
     
     
         13 . The apparatus of  claim 12 , wherein the scrambling ID configuration is to be signaled as part of a channel state information reference signal (CSI-RS) configuration. 
     
     
         14 . The apparatus of  claim 12 , wherein the signaling is performed as a part of a synchronization signal block (SSB) configuration. 
     
     
         15 . The apparatus of  claim 12 , wherein the scrambling ID configuration indicates one of two 16-bit scrambling IDs 
     
     
         16 . The apparatus of  claim 12 , wherein the scrambling ID configuration comprises a value indicated by a transmission configuration indication (TCI) state in downlink control information (DCI) when parameter TCI-PresentInDCI is enabled, wherein the TCI state is signaled in the DCI associated with ControlResourceSet (CORESET) scheduling a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH). 
     
     
         17 . The apparatus of  claim 17 , wherein the scrambling ID configuration comprises a value of 0 when parameter TCI-PresentInDCI is disabled. 
     
     
         18 . 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) using 1-bit in downlink control information (DCI) associated with ControlResourceSet (CORESET) scheduling a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH); and   transmitting the scrambling ID configuration to the UE.   
     
     
         19 . The one or more non-transitory storage media of  claim 18 , wherein the scrambling ID configuration is to be signaled as part of a channel state information reference signal (CSI-RS) configuration. 
     
     
         20 . The one or more non-transitory storage media of  claim 18 , wherein the signaling is performed as a part of a synchronization signal block (SSB) configuration.