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1. WO2020065530 - ADAPTING HARQ PROCEDURES FOR NON-TERRESTRIAL NETWORKS

Publication Number WO/2020/065530
Publication Date 02.04.2020
International Application No. PCT/IB2019/058094
International Filing Date 24.09.2019
IPC
H04L 1/18 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
12by using return channel
16in which the return channel carries supervisory signals, e.g. repetition request signals
18Automatic repetition systems, e.g. van Duuren system
H04B 7/185 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
14Relay systems
15Active relay systems
185Space-based or airborne stations
CPC
H04B 7/18504
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
14Relay systems
15Active relay systems
185Space-based or airborne stations; ; Stations for satellite systems
18502Airborne stations
18504Aircraft used as relay or high altitude atmospheric platform
H04B 7/1851
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
14Relay systems
15Active relay systems
185Space-based or airborne stations; ; Stations for satellite systems
1851Systems using a satellite or space-based relay
H04L 1/1822
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
12by using return channel
16in which the return channel carries supervisory signals, e.g. repetition request signals
18Automatic repetition systems, e.g. van Duuren system ; ; ARQ protocols
1822involving configuration of ARQ with parallel processes
H04L 1/1825
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
12by using return channel
16in which the return channel carries supervisory signals, e.g. repetition request signals
18Automatic repetition systems, e.g. van Duuren system ; ; ARQ protocols
1825Adaptation of specific ARQ protocol parameters according to transmission conditions
H04L 1/1864
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
12by using return channel
16in which the return channel carries supervisory signals, e.g. repetition request signals
18Automatic repetition systems, e.g. van Duuren system ; ; ARQ protocols
1829Arrangements specific to the receiver end
1864ARQ related signaling
H04L 1/1896
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
12by using return channel
16in which the return channel carries supervisory signals, e.g. repetition request signals
18Automatic repetition systems, e.g. van Duuren system ; ; ARQ protocols
1867Arrangements specific to the transmitter end
1896ARQ related signaling
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
Inventors
  • LIN, Xingqin
  • BERGMAN, Johan
  • ERIKSSON LÖWENMARK, Stefan
  • GAO, Shiwei
  • HÖGLUND, Andreas
  • KHAN, Talha
  • LIBERG, Olof
  • MÄÄTTÄNEN, Helka-Liina
  • SEDIN, Jonas
  • SHOKRI RAZAGHI, Hazhir
  • ZOU, Zhenhua
Agents
  • BEVINS, R. Chad
Priority Data
62/737,63027.09.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ADAPTING HARQ PROCEDURES FOR NON-TERRESTRIAL NETWORKS
(FR) ADAPTATION DE PROCÉDURES HARQ POUR DES RÉSEAUX NON TERRESTRES
Abstract
(EN)
Systems and methods are disclosed herein for selectively deactivating (partially or fully) Hybrid Automatic Repeat Request (HARQ) mechanisms in a cellular communications system. Embodiments disclosed herein are particularly well-suited for adapting HARQ mechanisms for non-terrestrial radio access networks (e.g., satellite-based radio access networks). Embodiments of a method performed by a wireless device and corresponding embodiments of a wireless device are disclosed. In some embodiments, a method performed by a wireless device for deactivating HARQ mechanisms comprises receiving, from a base station, an explicit or implicit indication that HARQ mechanisms are at least partially deactivated for an uplink or downlink transmission. The method further comprises determining that HARQ mechanisms are at least partially deactivated for the transmission based on the indication and transmitting/receiving the transmission with HARQ mechanisms at least partially deactivated.
(FR)
L'invention concerne des systèmes et des procédés pour désactiver sélectivement (partiellement ou complètement) des mécanismes de requête automatique de répétition hybride (HARQ) dans un système de communication cellulaire. Les modes de réalisation de la présente invention conviennent particulièrement pour adapter des mécanismes HARQ pour des réseaux d'accès radio non terrestres (par exemple, des réseaux d'accès radio basés sur des satellites). L'invention concerne des modes de réalisation d'un procédé mis en œuvre par un dispositif sans fil et des modes de réalisation correspondants d'un dispositif sans fil. Dans certains modes de réalisation, un procédé mis en œuvre par un dispositif sans fil pour désactiver des mécanismes HARQ consiste à recevoir, en provenance d'une station de base, une indication explicite ou implicite que des mécanismes HARQ sont au moins partiellement désactivés pour une transmission en liaison montante ou en liaison descendante. Le procédé consiste en outre à déterminer que des mécanismes HARQ sont au moins partiellement désactivés pour la transmission sur la base de l'indication et à émettre/recevoir la transmission avec des mécanismes HARQ au moins partiellement désactivés.
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