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1. WO2020112837 - OUTER-LOOP FEEDBACK SUPPORT FOR LOW ERROR RATES

Publication Number WO/2020/112837
Publication Date 04.06.2020
International Application No. PCT/US2019/063342
International Filing Date 26.11.2019
IPC
H04L 1/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
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
H04L 1/20 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
20using signal-quality detector
CPC
H04B 17/336
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
17Monitoring; Testing
30of propagation channels
309Measuring or estimating channel quality parameters
336Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
H04L 1/0003
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
0002by adapting the transmission rate
0003by switching between different modulation schemes
H04L 1/0015
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
0015characterised by the adaptation strategy
H04L 1/0026
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
0023characterised by the signalling
0026Transmission of channel quality indication
H04L 1/0035
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
0033arrangements specific to the transmitter
0035evaluation of received explicit signalling
H04L 1/0054
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
004by using forward error control
0045Arrangements at the receiver end
0054Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
Applicants
  • QUALCOMM INCORPORATED [US]/[US]
Inventors
  • FAKOORIAN, Seyed Ali Akbar
  • SUN, Jing
  • JIANG, Jing
  • ZHANG, Xiaoxia
  • JI, Tingfang
Agents
  • ANDERSON, Thomas D.
Priority Data
16/694,61025.11.2019US
62/772,53628.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OUTER-LOOP FEEDBACK SUPPORT FOR LOW ERROR RATES
(FR) SUPPORT DE RÉTROACTION À BOUCLE EXTERNE POUR FAIBLES TAUX D'ERREUR
Abstract
(EN)
Methods, systems, and devices for wireless communications are described which may enable a user equipment (UE) and a base station to use outer-loop feedback support to reach a desired error rate for low latency communications. For example, a base station may transmit a proxy acknowledgement feedback configuration to a UE for communications associated with a low target error rate. In some cases, after receiving the communications from the base station, the UE may receive secondary communications from the base station. The UE may then decode the first and/or second communications according to the proxy acknowledgement feedback configuration and/or a normal acknowledgement feedback configuration and may determine a proxy acknowledgement feedback based on the decoding. Further, the UE may transmit the proxy and/or normal acknowledgement feedback to the base station, which may update outer-loop power settings for the low latency communications based on the acknowledgement feedback.
(FR)
La présente invention concerne des procédés, des systèmes et des dispositifs pour des communications sans fil qui peuvent permettre à un équipement utilisateur (UE) et à une station de base d'utiliser un support de rétroaction en boucle externe pour atteindre un taux d'erreur souhaité dans le cadre de communications à faible latence. Par exemple, une station de base peut transmettre une configuration de rétroaction d'accusé de réception de mandataire à un UE pour des communications associées à un faible taux d'erreur cible. Dans certains cas, après réception des communications en provenance de la station de base, l'UE peut recevoir des communications secondaires en provenance de la station de base. L'UE peut ensuite décoder les premières et/ou secondes communications sur la base de la configuration de rétroaction d'accusé de réception de mandataire et/ou de la configuration de rétroaction d'accusé de réception normal, puis déterminer une rétroaction d'accusé de réception de mandataire sur la base du décodage. En outre, l'UE peut transmettre la rétroaction d'accusé de réception de mandataire et/ou normal à la station de base, qui peut mettre à jour des réglages de puissance de boucle externe pour les communications à faible latence sur la base de la rétroaction d'accusé de réception.
Also published as
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