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1. WO2020064304 - METHODS FOR SIDELINK GROUPCAST RETRANSMISSION AND RELATED WIRELESS DEVICES AND COMPUTER PROGRAM PRODUCTS

Publication Number WO/2020/064304
Publication Date 02.04.2020
International Application No. PCT/EP2019/073851
International Filing Date 06.09.2019
IPC
H04L 1/16 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
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
H04W 52/00 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
52Power management
CPC
H04L 1/1692
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
1607Details of the supervisory signal
1692Physical properties of the supervisory signal, e.g. acknowledgement by energy bursts
H04L 2001/0093
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
0092Error control systems characterised by the topology of the transmission link
0093Point-to-multipoint
H04W 52/0219
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
52Power management, e.g. TPC [Transmission Power Control], power saving or power classes
02Power saving arrangements
0209in terminal devices
0212managed by the network, e.g. network or access point is master and terminal is slave
0219where the power saving management affects multiple terminals
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
Inventors
  • ASHRAF, Shehzad Ali
  • DO, Hieu
  • SUN, Wanlu
  • FODOR, Gabor
Agents
  • ERICSSON
Priority Data
62/73833628.09.2018US
62/77870412.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHODS FOR SIDELINK GROUPCAST RETRANSMISSION AND RELATED WIRELESS DEVICES AND COMPUTER PROGRAM PRODUCTS
(FR) PROCÉDÉS DE RETRANSMISSION DE DIFFUSION DE GROUPE DE LIAISON LATÉRALE ET DISPOSITIFS SANS FIL ET PRODUITS DE PROGRAMME INFORMATIQUE ASSOCIÉS
Abstract
(EN)
Methods are disclosed for groupcast communications. For example, a method may be provided to operate a wireless device associated with a group, wherein the group includes the wireless device and a plurality of other wireless devices. A groupcast data packet is transmitted to the other wireless devices of the group. A power/energy of at least one acknowledgement (ACK) and/or negative acknowledgement (NACK) message received in response to the groupcast data packet is determined. The groupcast data packet is retransmitted to the other wireless devices of the group responsive to determining the power/energy of the at least one ACK and/or NACK message. Related wireless devices and computer program products are also discussed.
(FR)
L'invention concerne des procédés de communication par diffusion de groupe. Par exemple, un procédé peut être fourni pour faire fonctionner un dispositif sans fil associé à un groupe, le groupe comprenant le dispositif sans fil et une pluralité d'autres dispositifs sans fil. Un paquet de données de diffusion de groupe est transmis aux autres dispositifs sans fil du groupe. Une puissance/énergie d'au moins un message d'accusé de réception (ACK) et/ou d'accusé de réception négatif (NACK) reçu(s) en réponse au paquet de données de diffusion de groupe est déterminée. Le paquet de données de diffusion de groupe est retransmis aux autres dispositifs sans fil du groupe en réponse à la détermination de la puissance/de l'énergie dudit message ACK et/ou NACK. L'invention concerne également des dispositifs sans fil et des produits de programme informatique associés.
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