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1. WO2020221338 - CONTROL CHANNEL DEMODULATION REFERENCE SIGNAL BUNDLING

Publication Number WO/2020/221338
Publication Date 05.11.2020
International Application No. PCT/CN2020/088214
International Filing Date 30.04.2020
IPC
H04L 27/26 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
CPC
H04L 27/2602
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
H04L 27/2603
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
2603Signal structure ensuring backward compatibility with legacy system
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 5/0007
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
0007the frequencies being orthogonal, e.g. OFDM(A), DMT
H04L 5/0037
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
0037Inter-user or inter-terminal allocation
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]
  • REN, Yuwei [CN]/[CN] (US)
  • XU, Huilin [CN]/[US] (US)
  • ANG, Peter Pui Lok [CA]/[US] (US)
Inventors
  • REN, Yuwei
  • XU, Huilin
  • ANG, Peter Pui Lok
Agents
  • NTD PATENT & TRADEMARK AGENCY LTD.
Priority Data
PCT/CN2019/08539401.05.2019CN
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) CONTROL CHANNEL DEMODULATION REFERENCE SIGNAL BUNDLING
(FR) REGROUPEMENT DE SIGNAUX DE RÉFÉRENCE DE DÉMODULATION DE CANAUX DE COMMANDE
Abstract
(EN) Certain aspects of the present disclosure provide techniques for transmitting demodulation reference signals (DMRS) with control channels (e.g., physical downlink control channels (PDCCHs) ) that enable receiving devices to bundle (e.g., coherently combine) the DMRS over time. A UE may detect a portion of a PDCCH to the UE in at least one resource element group (REG), wherein the REG is in a segment of a control resource set (CORESET) configured for the UE or a group of UEs including the UE and the REG is during a first search space (SS) set occasion configured for the UE or the group of UEs; and process wideband (WB) DMRS in the segment during the first SS set occasion and in the segment during at least one second SS set occasion, wherein the UE does not detect another portion of the PDCCH or another PDCCH during the second SS set occasion.
(FR) La présente invention concerne, selon certains aspects, des techniques de transmission de signaux de référence de démodulation (DMRS) avec des canaux de commande (p.ex. des canaux physiques de commande de liaison descendante (PDCCH)) qui permettent à des dispositifs récepteurs de regrouper (p.ex. de combiner de manière cohérente) les DMRS dans le temps. Un UE peut détecter une partie d'un PDCCH vers l'UE dans au moins un groupe d'éléments de ressources (REG), le REG se trouvant dans un segment d'un ensemble de ressources de commande (CORESET) configuré pour l'UE ou un groupe d'UE incluant l'UE et le REG intervenant pendant une première occasion d'ensemble d'espaces de recherche (SS) configurée pour l'UE ou le groupe d'UE; et traiter des DMRS à large bande (WB) dans le segment pendant la première occasion d'ensemble de SS et dans le segment pendant au moins une seconde occasion d'ensemble de SS, l'UE ne détectant pas une autre partie du PDCCH ou un autre PDCCH pendant la seconde occasion d'ensemble de SS.
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