Processing

Please wait...

PATENTSCOPE will be unavailable a few hours for maintenance reason on Saturday 31.10.2020 at 7:00 AM CET
Settings

Settings

Goto Application

1. WO2020205617 - CLOSED LOOP FREQUENCY CORRECTION FOR NON-TERRESTRIAL NETWORK SYSTEMS

Publication Number WO/2020/205617
Publication Date 08.10.2020
International Application No. PCT/US2020/025452
International Filing Date 27.03.2020
IPC
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
H04W 56/00 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
56Synchronisation arrangements
CPC
H04B 7/18513
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
18513Transmission in a satellite or space-based system
H04B 7/1855
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
1853Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
18545Arrangements for managing station mobility, i.e. for station registration or localisation
18547for geolocalisation of a station
1855using a telephonic control signal, e.g. propagation delay variation, Doppler frequency variation, power variation, beam identification
H04L 27/2657
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2647Arrangements specific to the receiver
2655Synchronisation arrangements
2657Carrier synchronisation
H04W 56/0035
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
56Synchronisation arrangements
0035detecting errors in frequency or phase
H04W 72/121
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
12Dynamic; Wireless traffic scheduling ; ; Dynamically scheduled allocation on shared channel
1205Schedule definition, set-up or creation
121for groups of terminals or users
H04W 72/1268
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
12Dynamic; Wireless traffic scheduling ; ; Dynamically scheduled allocation on shared channel
1263Schedule usage, i.e. actual mapping of traffic onto schedule; Multiplexing of flows into one or several streams; Mapping aspects; Scheduled allocation
1268of uplink data flows
Applicants
  • QUALCOMM INCORPORATED [US]/[US]
Inventors
  • WANG, Xiao, Feng
  • MA, Jun
  • SAKHNINI, Iyab, Issam
  • ZHANG, Dan
Agents
  • TONKINSON, Michael
Priority Data
16/831,69926.03.2020US
62/826,32629.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CLOSED LOOP FREQUENCY CORRECTION FOR NON-TERRESTRIAL NETWORK SYSTEMS
(FR) CORRECTION DE FRÉQUENCE EN BOUCLE FERMÉE POUR SYSTÈMES DE RÉSEAUX NON TERRESTRES
Abstract
(EN)
Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for efficiently determining appropriate uplink frequencies for uplink transmissions to a satellite. As described herein, a wireless communications system may support a closed loop frequency correction scheme where a satellite may provide an uplink frequency correction to a user equipment (UE) such that the UE may be able to identify an appropriate uplink frequency for an uplink transmission. In some implementations, the UE may first transmit an uplink signal to the satellite on an initial uplink frequency, and the satellite may determine a corrected uplink frequency for the UE based on the initial uplink frequency. The satellite may then transmit an indication of the corrected uplink frequency to the UE, and the UE may transmit a second uplink signal based on the corrected uplink frequency.
(FR)
L’invention concerne des procédés, systèmes et dispositifs destinés à des communications sans fil. D'une manière générale, les techniques décrites permettent de déterminer efficacement des fréquences de liaison montante appropriées pour des transmissions de liaison montante vers un satellite. Tel qu'il est décrit dans la description, un système de communication sans fil peut prendre en charge un procédé de correction de fréquence en boucle fermée dans lequel un satellite peut fournir une correction de fréquence de liaison montante à un équipement utilisateur (UE), de telle sorte que l'UE peut être en mesure d'identifier une fréquence de liaison montante appropriée pour une transmission de liaison montante. Dans certains modes de réalisation, l'UE peut d'abord émettre un signal de liaison montante vers le satellite sur une fréquence de liaison montante initiale, et le satellite peut déterminer une fréquence de liaison montante corrigée pour l'UE sur la base de la fréquence de liaison montante initiale. Le satellite peut ensuite émettre une indication de la fréquence de liaison montante corrigée vers l'UE, et l'UE peut émettre un second signal de liaison montante sur la base de la fréquence de liaison montante corrigée.
Latest bibliographic data on file with the International Bureau