• Patent Title: DEMODULATION REFERENCE SIGNAL (DMRS) INDICATION FOR SINGLE DOWNLINK CONTROL INFORMATION (DCI) MULTITRANSMISSION RECEPTION POINT (TRP) TRANSMISSION
  • Application No.: US17430857
    Application Date: 2020-02-16
  • Publication No.: US20220216964A1
    Publication Date: 2022-07-07
  • Inventor: Bishwarup MONDALAvik SENGUPTAAlexei DAVYDOVYushu ZHANG
  • Applicant: Apple Inc.
  • Applicant Address: US CA Cupertino
  • Assignee: Apple Inc.
  • Current Assignee: Apple Inc.
  • Current Assignee Address: US CA Cupertino
  • International Application: PCT/US2020/018473 WO 20200216
  • Main IPC: H04L5/00
  • IPC: H04L5/00
DEMODULATION REFERENCE SIGNAL (DMRS) INDICATION FOR SINGLE DOWNLINK CONTROL INFORMATION (DCI) MULTITRANSMISSION RECEPTION POINT (TRP) TRANSMISSION
Abstract:
Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for a single downlink control information (DCI) signal that supports multi-transmission reception point (TRP) transmissions from different TRPs (e.g., different 5G Node Bs or different antenna panels.) A user equipment (UE) receives a single DCI signal that includes a first transmission configuration indicator (TCI) state of a first TRP, a second TCI state of a second TRP, and a demodulation reference signal (DMRS) port indication value. The UE uses the DMRS port indication value to determine a first DMRS port and a first code division multiplexing (CDM) group of the first TCI state and a second DMRS port and a second CDM group of the second TCI state. The UE receives a multi-Physical Downlink Shared Channel (PDSCH) signal that includes multi-TRP transmissions, and uses the above determinations to decode data from the first and/or the second TCI states.
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