Method and apparatus for transmission or reception using beamforming in a wireless communication system

Abstract

Methods and apparatuses for transmission or reception using beamforming in a wireless communication system are disclosed herein. In one method, a user equipment provides information related to a combination of UE beams to a network node, wherein UE beams in the combination can be generated by the UE at the same time. The UE receives, from the network node, a scheduling information for a transmission or a reception. The UE generates one or more UE beams in the combination to perform the transmission or the reception.

1 . A method for a user equipment (UE) for transmission or reception using beamforming, the method comprising:
 receiving, from a network node, a Medium Access Control (MAC) signaling indicating a network beam;   deriving a UE beam from the network beam indicated by the MAC signaling; and   receiving, from the network node and on the UE beam derived from the network beam indicated by the MAC signaling, a scheduling information for a reception in a Physical Downlink Control Channel (PDCCH) signaling.   
     
     
         2 . The method of  claim 1 , further comprising:
 generating specific UE beams in a valid combination to perform the reception based on the scheduling information.   
     
     
         3 . The method of  claim 1 , further comprising:
 providing information indicating a valid combination of UE beams to a network node.   
     
     
         4 . The method of  claim 1 , further comprising:
 providing information related to UE beamforming capability.   
     
     
         5 . The method of  claim 1 , wherein the UE cannot generate every combination of UE beams. 
     
     
         6 . A method for a network node for transmission or reception using beamforming, the method comprising:
 transmitting a Medium Access Control (MAC) signaling indicating a network beam to be used by a user equipment (UE) for deriving a UE beam to be used for receiving a Physical Downlink Control Channel (PDCCH) signaling;   choosing specific UE beams from a valid combination of UE beams to schedule the UE for a reception; and   transmitting, to the UE and via the UE beam derived from the network beam indicated by the MAC signaling, a scheduling information in the PDCCH signaling to schedule the reception for the UE.   
     
     
         7 . The method of  claim 6 , wherein the scheduling information transmitted via the UE beam indicates the specific UE beams in the valid combination to be used by the UE for the reception. 
     
     
         8 . The method of  claim 6 , further comprising:
 receiving information indicating the valid combination of UE beams from the UE.   
     
     
         9 . The method of  claim 8 , further comprising:
 controlling which UE beam or beams are used for the reception based on the information.   
     
     
         10 . The method of  claim 6 , further comprising:
 receiving information related to UE beamforming capability from the UE.   
     
     
         11 . A User Equipment (UE) for transmission or reception using beamforming comprising:
 a control circuit;   a processor installed in the control circuit; and   a memory installed in the control circuit and coupled to the processor;   wherein the processor is configured to execute a program code stored in the memory to:
 receive, from a network node, a Medium Access Control (MAC) signaling indicating a network beam; 
 derive a UE beam from the network beam indicated by the MAC signaling; and 
 receive, from the network node and on the UE beam derived from the network beam indicated by the MAC signaling, a scheduling information for a reception in a Physical Downlink Control Channel (PDCCH) signaling. 
   
     
     
         12 . The UE of  claim 11 , further comprising:
 generating specific UE beams in a valid combination to perform the reception based on the scheduling information.   
     
     
         13 . The UE of  claim 11 , further comprising:
 providing information indicating a valid combination of UE beams to a network node.   
     
     
         14 . The UE of  claim 11 , further comprising:
 providing information related to UE beamforming capability.   
     
     
         15 . The UE of  claim 11 , wherein the UE cannot generate every combination of UE beams. 
     
     
         16 . A network node for transmission or reception using beamforming comprising:
 a control circuit;   a processor installed in the control circuit; and   a memory installed in the control circuit and coupled to the processor;   wherein the processor is configured to execute a program code stored in the memory to:
 transmit a Medium Access Control (MAC) signaling indicating a network beam to be used by a user equipment (UE) for deriving a UE beam to be used for receiving a Physical Downlink Control Channel (PDCCH) signaling; 
 choose specific UE beams from a valid combination of UE beams to schedule the UE for a reception; and 
 transmit, to the UE and via the UE beam derived from the network beam indicated by the MAC signaling, a scheduling information in the PDCCH signaling to schedule the reception for the UE. 
   
     
     
         17 . The network node of  claim 16 , wherein the scheduling information transmitted via the UE beam indicates the specific UE beams in the valid combination to be used by the UE for the reception. 
     
     
         18 . The network node of  claim 16 , further comprising:
 receiving information indicating the valid combination of UE beams from the UE.   
     
     
         19 . The network node of  claim 18 , further comprising:
 controlling which UE beam or beams are used for the reception based on the information.   
     
     
         20 . The network node of  claim 16 , further comprising:
 receiving information related to UE beamforming capability from the UE.