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1. WO2020225031 - DISCOVERY OF AND RECOVERY FROM MISSED WAKE-UP SIGNAL (WUS) RECEPTION

Publication Number WO/2020/225031
Publication Date 12.11.2020
International Application No. PCT/EP2020/061773
International Filing Date 28.04.2020
IPC
H04W 52/02 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
52Power management
02Power saving arrangements
CPC
H04W 52/0216
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
0216using a pre-established activity schedule, e.g. traffic indication frame
H04W 52/0229
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
0225using monitoring of external events, e.g. the presence of a signal
0229where the received signal is a wanted signal
H04W 52/0241
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
0225using monitoring of external events, e.g. the presence of a signal
0241where no transmission is received, e.g. out of range of the transmitter
H04W 52/0245
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
0225using monitoring of external events, e.g. the presence of a signal
0245according to signal strength
H04W 52/028
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
0261managing power supply demand, e.g. depending on battery level
0274by switching on or off the equipment or parts thereof
028switching on or off only a part of the equipment circuit blocks
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
Inventors
  • MALEKI, Sina
  • REIAL, Andres
  • ANDGART, Niklas
  • NADER, Ali
  • SHUBHI, Ilmiawan
Agents
  • ERICSSON
Priority Data
62/843,10203.05.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DISCOVERY OF AND RECOVERY FROM MISSED WAKE-UP SIGNAL (WUS) RECEPTION
(FR) DÉCOUVERTE ET RÉCUPÉRATION À PARTIR D'UNE RÉCEPTION DE SIGNAL DE RÉVEIL (WUS) MANQUÉ
Abstract
(EN)
Embodiments include methods for selective transmission of wake-up signals (WUS) to a user equipment (UE) by a network node in a RAN. Such methods include transmitting a WUS to the UE during a first occasion and, during one or more second occasions, monitoring for WUS feedback from the UE in response to the WUS. Such methods include, based on the results of the monitoring, selectively transmitting one or more further WUS to the UE during respective one or more third occasions. The WUS feedback can be received in various ways in different embodiments. In some embodiments, such methods include other operations after a predetermined number of repetitions of detecting no WUS feedback from the UE during second occasions and transmitting further WUS to the UE during third occasions. Other embodiments include complementary methods for a UE, as well as network nodes and UEs configured to perform such methods.
(FR)
Des modes de réalisation comprennent des procédés de transmission sélective de signaux de réveil (WUS) à un équipement utilisateur (UE) par un nœud de réseau dans un RAN. De tels procédés comprennent la transmission d'un WUS à l'UE durant une première occasion et, pendant une ou plusieurs deuxièmes occasions, la surveillance d'une rétroaction WUS en provenance de l'UE en réponse au WUS. De tels procédés comprennent, sur la base des résultats de la surveillance, la transmission sélective d'un ou plusieurs autres WUS à l'UE pendant une ou plusieurs troisièmes occasions respectives. La rétroaction WUS peut être reçue de diverses manières dans différents modes de réalisation. Dans certains modes de réalisation, de tels procédés comprennent d'autres opérations après un nombre prédéterminé de répétitions de détection d'une rétroaction WUS en provenance de l'UE pendant des deuxièmes occasions et la transmission d'autres WUS à l'UE pendant des troisièmes occasions. Des modes de réalisation comprennent également des procédés complémentaires mis en œuvre par l'UE, ainsi que des nœuds de réseau et des UE configurés pour mettre en œuvre ces procédés
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