公开(公告)号：EP0707389A2

公开(公告)日：1996-04-17

申请号：EP95850160.3

申请日：1995-09-15

申请人： Hughes Aircraft Company

发明人： Palmer, Larry C. ,  Golding, Leonard S.

IPC分类号： H04B7/185

CPC分类号： H04B7/18523 ,  H04B7/18517

摘要： An apparatus and method for return-link transmission in direct broadcast satellite networks having a hub earth station transmitting forward-link signals, and a plurality of remote terminal stations receiving the forward-link signals and transmitting return-link spread-spectrum signals in the same transponder as the forward-link signal so that both are received at the hub station. The apparatus located at the hub station is comprised of a demodulator and a remodulator of the forward-link signals, delay as necessary for composite signals comprising the forward-link signals interfered with the return-link signals and received from a satellite, and a canceler subtracting the remodulated signals from the composite signals. The method comprises a sequence of steps for synchronizing the return-link signals with the forward-link signals at the remote terminal stations, synchronizing the return-link signals with the forward-link signals at the satellite, receiving at the hub station from the satellite the composite signal having the forward-link signals interfered with the return-link signals, and canceling at the hub station the forward-link signals in the composite signals prior to spread-spectrum demodulation of the return-link signals.

公开(公告)号：EP0624963A1

公开(公告)日：1994-11-17

申请号：EP93107827.3

申请日：1993-05-13

申请人： NIPPON TELEVISION NETWORK CORPORATION

发明人： Aikoh, Shinichi, c/o Nippon Television Network

IPC分类号： H04H7/00

CPC分类号： H04H60/05 ,  H04B7/18517 ,  H04H20/04 ,  H04H60/04 ,  H04R3/007

摘要： A Satellite News Gathering system, communicates between the TV studio and a mobile ground station, using an existing broadcast link through an existing TV transmitter for transmitting the TV studio sound to the mobile groundstation. The mobile groundstation uses a satellite link to transmit to the TV studio.
In order to remove the reporters voice signal from the broadcast signal, which returns from the TV studio through the TV transmitter, as an echo signal, the reporters voice signal is delayed at the mobile ground station, and subtracted from the broadcast signal being received from the TV transmitter.

摘要翻译： 卫星新闻采集系统，通过现有的电视发射机，将电视演播室声音传输到移动地面站，在电视演播室和移动地面站之间进行通信。 移动地面站使用卫星链路传输到电视演播室。 为了从电视演播室通过TV发射机返回的广播信号中消除记者的声音信号作为回波信号，记者话音信号在移动地面站被延迟，从广播信号中减去从 电视发射机。

公开(公告)号：EP4409689A2

公开(公告)日：2024-08-07

申请号：EP22932462.9

申请日：2022-09-29

申请人： Smiths Interconnect, Inc.

发明人： WILKERSON, James Allan

IPC分类号： H01Q3/26 ,  H01Q21/29 ,  H04B7/024

CPC分类号： G01S3/42 ,  G01S3/48 ,  H04B7/18517

公开(公告)号：EP4399815A1

公开(公告)日：2024-07-17

申请号：EP22783655.8

申请日：2022-09-07

申请人： Hughes Network Systems, LLC

发明人： SCOTT, Michael ,  LUNDSTEDT, Jack ,  KEPLEY, Robert

IPC分类号： H04B7/185 ,  H04B7/19

CPC分类号： H04B7/18517 ,  H04B7/19

公开(公告)号：EP4362351A1

公开(公告)日：2024-05-01

申请号：EP23206160.6

申请日：2023-10-26

申请人： Thinkware Corporation

发明人： KANG, Jeongkyu ,  KIM, Daewon ,  HAN, Taekyu

IPC分类号： H04B7/185 ,  H04W56/00

CPC分类号： H04B7/18517 ,  H04B7/18519 ,  H04W56/0035

摘要： A device of a user equipment (LTE) includes at least one transceiver and at least one processor coupled to the at least one transceiver. The at least one processor is configured to perform a compensation for doppler shift based on ephemeris information for non-terrestrial network (NTN) device and position information of the UE. The at least one processor is configured to transmit a message including compensation information to a network node through the NTN device based on the compensation. The compensation information indicates at least one of a frequency shift value according to the doppler shift or a doppler shift change rate indicating a change rate of a frequency shift value per unit time. The NTN device includes a satellite that moves based on the ephemeris information.

公开(公告)号：EP3404849A1

公开(公告)日：2018-11-21

申请号：EP18166710.6

申请日：2018-04-11

申请人： THALES

发明人： ARNAUD, Mathieu ,  BOUTILLON, Jean-François ,  ALMEIDA, Jean-Luc

IPC分类号： H04B7/185

CPC分类号： H04B7/18517 ,  H01Q1/246 ,  H04B7/0404 ,  H04B7/18515 ,  H04B7/18534 ,  H04B7/18541 ,  H04W36/18

摘要： Une station sol à P antennes de suivi individuel d'un satellite parmi un premier satellite S1 défilant de départ et un deuxième satellite S2 défilant de destination comprend, connectés en série, un dispositif de réception et de traitement multivoies (122) et un dispositif de combinaison à diversité configurable (124), et comprend un dispositif de gestion de diversité et de basculement transparent (126) d'un lien de communication de réception depuis le premier satellite S1 d'origine vers le deuxième satellite S2 de destination.
Le dispositif de gestion de diversité et de basculement transparent (126) est configuré pour gérer et coordonner l'exécution d'une succession de k basculements Bi transparents et unitaires d'antennes, et pendant chaque basculement transparent et unitaire Bi, contrôler les antennes (112, 114, 116), le dispositif de réception et de traitement multivoies (122) ainsi que le dispositif de combinaison à diversité configurable (124) en déterminant et en leur envoyant respectivement :
.* des commandes de pointage d'acquisition des satellites, et
.* des commandes d'alignement temporel et en phase des P signaux reçus en entrée du dispositif de réception et de traitement multivoies élaborées en fonction de mesures d'écarts temporels et en phase de P-1 signaux reçus en entrée par rapport au signal reçu en entrée pris comme signal de référence, et
.* une consigne de sélection des signaux traités de sortie à combiner en fonction de la planification du basculement de la première configuration de diversité C1 vers la deuxième configuration de diversité C2 et en fonction de mesures de qualités des signaux reçus en entrée du dispositif de réception et de traitement.

公开(公告)号：EP3403341A1

公开(公告)日：2018-11-21

申请号：EP16828890.0

申请日：2016-12-29

申请人： Qualcomm Incorporated

发明人： DAMNJANOVIC, Jelena ,  WU, Qiang ,  ULUPINAR, Fatih

IPC分类号： H04B7/185 ,  H04W74/00

CPC分类号： H04W74/08 ,  H04B7/18517 ,  H04B7/18539 ,  H04W28/0278 ,  H04W72/1284 ,  H04W74/00 ,  H04W88/16

摘要： Methods and apparatuses are disclosed for a network controller to receive data from a user terminal (UT) via a satellite in a satellite system. The network controller may allocate contention-based resources of the satellite system to a plurality of UTs, and may activate the allocated contention-based resources by transmitting an activation signal to the plurality of UTs. The network controller may receive, from a first UT via a satellite of the satellite system, a first portion of data on a plurality of subframes of the contention-based resources during a time period, and may suspend the allocation of contention-based resources after an expiration of the time period or upon a grant of scheduled return link resources to the first UT, irrespective of collisions on the contention-based resources.

公开(公告)号：EP3373474A1

公开(公告)日：2018-09-12

申请号：EP17160355.8

申请日：2017-03-10

申请人： Eutelsat S.A.

发明人： AMOS, Sonya ,  FENECH, Hector ,  RAWLINS, Mark

IPC分类号： H04B7/185 ,  H01Q1/12

CPC分类号： H04B7/18517 ,  H01Q1/1257

摘要： The invention relates to a system and method for aligning an earth station antenna (2) with a satellite antenna (4). The method comprises the following steps:
- sending an uplink signal (10) from the earth station antenna (2) to the satellite antenna (4);
- measuring at least a strength of the uplink signal received by the satellite antenna (4);
- sending by telemetry the measured signal strength to a telemetry station (5);
- adjusting the orientation of the earth station antenna (2) in order to maximize the measured signal strength.

公开(公告)号：EP3151623B1

公开(公告)日：2018-05-16

申请号：EP16189786.3

申请日：2016-09-20

申请人： Thales

发明人： GINESTE, Mathieu ,  NIDDAM, David ,  FAURE, Cécile ,  ULPAT, Isabelle

IPC分类号： H04W72/04 ,  H04B7/185 ,  H04B7/155

CPC分类号： H04W72/1263 ,  H04B7/18517 ,  H04W72/04 ,  H04W74/0833

公开(公告)号：EP3281308A2

公开(公告)日：2018-02-14

申请号：EP16781585.1

申请日：2016-04-08

申请人： ViaSat, Inc.

发明人： MILLER, Mark ,  BUER, Kenneth

IPC分类号： H04B7/185 ,  H04B7/204

CPC分类号： H04B7/2041 ,  H04B7/18513 ,  H04B7/18517

摘要： End-to-end beamforming systems (500) include end-to-end relays (503, 1202, 3403) and ground networks (502) to provide communications to user terminals (517) located in user beam coverage areas (519). The ground segment can include geographically distributed access nodes (515) and a central processing system (505). Return uplink signals (525), transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths (1702) in the end to end relay and are relayed to the ground network. The ground network, using beamformers (513, 531), recovers user data streams transmitted by the user terminals from return downlink signals (527). The ground network, using beamformers (513, 529) generates forward uplink signals (521) from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals (522) that combine to form user beams.