Setting default physical downlink shared channel (pdsch) beams

Abstract

In accordance with various embodiments herein, for single downlink control information (DCI) and/or multi-DCI multi-transmission-reception point (TRP) transmission, a default physical downlink shared channel (PDSCH) beam is determined based on the lowest indexed control resource set (CORESET) within the set of monitored CORESETs in the latest slot with the same value of CORESETPoolIndex. Other embodiments may be described and claimed.

1 . One or more non-transitory computer-readable media (NTCRM) having instructions, stored thereon, that when executed by one or more processors cause a user equipment (UE) to:
 receive a physical downlink control channel (PDCCH) to schedule a physical downlink shared channel (PDSCH) of a multi-transmission-reception point (TRP) transmission; and   determine a default PDSCH beam based on a control resource set (CORESET) with a lowest index within a set of monitored CORESETs in a latest slot with a same CORESETPoolIndex as the PDCCH.   
     
     
         2 . The one or more NTCRM of  claim 1 , wherein the multi-TRP transmission is a single-downlink control information (DCI) multi-TRP transmission. 
     
     
         3 . The one or more NTCRM of  claim 1 , wherein the multi-TRP transmission is a multi-DCI multi-TRP transmission. 
     
     
         4 . The one or more NTCRM of  claim 1 , wherein the instructions, when executed, are further to cause the UE to receive the PDSCH based on the default PDSCH beam. 
     
     
         5 . The one or more NTCRM of  claim 4 , wherein the PDSCH is received based on the default PDSCH beam if the PDSCH is scheduled within a time period from receipt of the PDCCH. 
     
     
         6 . The one or more NTCRM of  claim 1 , wherein the instructions, when executed, are further to cause the UE to:
 determine that group-based beam reporting is enabled; and   generating, based on the determination, a Layer 1 (L1)-reference signal received power (RSRP) report for multi-TRP reception using a best antenna panel of the UE.   
     
     
         7 . The one or more NTCRM of  claim 1 , wherein the instructions, when executed, are further to cause the UE to:
 determine that group-based beam reporting is not enabled; and   generate, based on the determination, a Layer 1 (L1)-reference signal received power (RSRP) report for multi-TRP reception using a set of antenna panels of the UE.   
     
     
         8 . The one or more NTCRM of  claim 1 , wherein the PDSCH is scheduled in a Frequency Range 2 (FR2). 
     
     
         9 . One or more non-transitory computer-readable media (NTCRM) having instructions, stored thereon, that when executed by one or more processors cause a next generation NodeB (gNB) to:
 encode, for transmission to a user equipment (UE), a physical downlink control channel (PDCCH) to schedule a physical downlink shared channel (PDSCH) of a multi-transmission-reception point (TRP) transmission; and   determine a default PDSCH beam for the PDSCH based on a control resource set (CORESET) with a lowest index within a set of monitored CORESETs in a latest slot with a same CORESETPoolIndex as the PDCCH.   
     
     
         10 . The one or more NTCRM of  claim 9 , wherein the multi-TRP transmission is a single-downlink control information (DCI) multi-TRP transmission. 
     
     
         11 . The one or more NTCRM of  claim 9 , wherein the multi-TRP transmission is a multi-DCI multi-TRP transmission. 
     
     
         12 . The one or more NTCRM of  claim 9 , wherein the instructions, when executed, are further to cause the gNB to encode the PDSCH for transmission based on the default PDSCH beam. 
     
     
         13 . The one or more NTCRM of  claim 12 , wherein the PDSCH is transmitted based on the default PDSCH beam if the PDSCH is scheduled within a time period from the PDCCH. 
     
     
         14 . The one or more NTCRM of  claim 9 , wherein the instructions, when executed, are further to cause the gNB to:
 encode, for transmission to the UE, an indication that group-based beam reporting is enabled; and   receive, based on the indication, a Layer 1 (L1)-reference signal received power (RSRP) report for multi-TRP reception that is generated using a best antenna panel of the UE.   
     
     
         15 . The one or more NTCRM of  claim 9 , wherein the instructions, when executed, are further to cause the gNB to:
 encode, for transmission to the UE, an indication that group-based beam reporting is not enabled; and   receive, based on the indication, a Layer 1 (L1)-reference signal received power (RSRP) report for multi-TRP reception that is generated using a set of antenna panels of the UE.   
     
     
         16 . The one or more NTCRM of  claim 9 , wherein the PDSCH is scheduled in a Frequency Range 2 (FR2).