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1. WO2021067889 - PHASE TRACKING REFERENCE SIGNAL FOR MULTI-TRANSMIT/RECEIVE POINTS

Publication Number WO/2021/067889
Publication Date 08.04.2021
International Application No. PCT/US2020/054173
International Filing Date 03.10.2020
IPC
H04L 5/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
CPC
H04L 27/2613
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2602Signal structure
261Details of reference signals
2613Structure of the reference signals
H04L 27/2675
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2647Arrangements specific to the receiver only
2655Synchronisation arrangements
2668Details of algorithms
2673characterised by synchronisation parameters
2675Pilot or known symbols
H04L 5/0005
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
0001Arrangements for dividing the transmission path
0003Two-dimensional division
0005Time-frequency
H04L 5/0035
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0032Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
0035Resource allocation in a cooperative multipoint environment
H04L 5/0048
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0048Allocation of pilot signals, i.e. of signals known to the receiver
H04L 5/0051
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0048Allocation of pilot signals, i.e. of signals known to the receiver
0051of dedicated pilots, i.e. pilots destined for a single user or terminal
Applicants
  • QUALCOMM INCORPORATED [US]/[US]
Inventors
  • KHOSHNEVISAN, Mostafa
  • ZHANG, Xiaoxia
  • GAAL, Peter
  • LUO, Tao
  • SUN, Jing
  • KIM, Tae Min
  • CHENDAMARAI KANNAN, Arumugam
Agents
  • GELFOUND, Craig A.
  • BINDSEIL, James
Priority Data
17/062,23502.10.2020US
62/911,08604.10.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PHASE TRACKING REFERENCE SIGNAL FOR MULTI-TRANSMIT/RECEIVE POINTS
(FR) SIGNAL DE RÉFÉRENCE DE SUIVI DE PHASE POUR POINTS DE RÉCEPTION/MULTI-TRANSMISSION
Abstract
(EN)
A phase tracking reference signal (PT-RS) may be transmitted to enable a receiver to correct phase noise in wireless communication. A UE scheduled for one PDSCH with DMRS ports in two or more DMRS CDM groups that are associated with two TCI states may be configured for PT-RS using two PT-RS ports. Therefore, rather than limiting PT-RS to a single port, the PT-RS may be transmitted to the UE using two PT-RS ports. The apparatus transmits a capability indication for more than one PT-RS port for receiving a downlink shared channel based on a first TCI and a second TCI. The apparatus receives a configuration for a maximum number of downlink PT-RS ports from a base station.
(FR)
Un signal de référence de suivi de phase (PT-RS) peut être transmis afin de permettre à un récepteur de corriger le bruit de phase dans une communication sans fil. Un UE planifié pour un PDSCH avec des ports DMRS dans au moins deux groupes de CDM de DMRS qui sont associés à deux états de TCI peut être configuré pour un PT-RS au moyen de deux ports PT-RS. Par conséquent, plutôt que de limiter un PT-RS à un port unique, le PT-RS peut être transmis à l'UE au moyen de deux ports PT-RS. L'appareil transmet une indication de capacité pour plus d'un port PT-RS pour recevoir un canal partagé de liaison descendante sur la base d'un premier TCI et d'un second TCI. L'appareil reçoit une configuration pour un nombre maximal de ports PT-RS de liaison descendante en provenance d'une station de base.
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