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1. WO2020089865 - SYSTEMS AND METHODS FOR SIGNALING PDSCH DIVERSITY

Publication Number WO/2020/089865
Publication Date 07.05.2020
International Application No. PCT/IB2019/059412
International Filing Date 01.11.2019
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 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 5/0044
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
0044allocation of payload
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
H04L 5/006
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
0058Allocation criteria
006Quality of the received signal, e.g. BER, SNR, water filling
H04L 5/0094
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
0091Signaling for the administration of the divided path
0094Indication of how sub-channels of the path are allocated
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
Inventors
  • MURUGANATHAN, Siva
  • FAXÉR, Sebastian
  • FRENNE, Mattias
  • GAO, Shiwei
Agents
  • MACENKO, Marc
Priority Data
62/755,11502.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEMS AND METHODS FOR SIGNALING PDSCH DIVERSITY
(FR) SYSTÈMES ET PROCÉDÉS DE SIGNALISATION DE DIVERSITÉ PDSCH
Abstract
(EN)
Systems and methods for signaling for Physical Downlink Shared Channel (PDSCH) diversity are provided. In some embodiments, a method performed by a wireless device for receiving a plurality of downlink transmissions includes determining an association between one or more Demodulation Reference Signal (DMRS) ports and one or more associated Redundancy Values (RVs). The method also includes receiving the plurality of downlink transmissions using the association. In some embodiments, this enables a single Downlink Control Information (DCI) to be used to schedule different redundancy versions of the same transport block from the different Transmission/Reception Points (TRPs) which helps improve reliability of decoding a transmission successfully within stringent latency requirements.
(FR)
L'invention concerne des systèmes et des procédés de signalisation pour la diversité de canal physique partagé descendant (PDSCH). Dans certains modes de réalisation, un procédé mis en oeuvre par un dispositif sans fil pour recevoir une pluralité de transmissions sens descendant comprend une étape qui consiste à déterminer une association entre un ou plusieurs ports de signal de référence de démodulation (DMRS) et une ou plusieurs valeurs de redondance associées (RV). Le procédé consiste également à recevoir la pluralité de transmissions sens descendant à l'aide de l'association. Dans certains modes de réalisation, cela permet d'utiliser une seule information de commande sens descendant (DCI) pour ordonnancer différentes versions de redondance du même bloc de transport à partir des différents points de transmission/réception (TRP) ce qui aide à améliorer la fiabilité de décodage d'une transmission avec succès dans des conditions de latence très rigoureuses.
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