公开(公告)号：US20190260465A1

公开(公告)日：2019-08-22

申请号：US16277905

申请日：2019-02-15

Applicant: INSTITUT POLYTECHNIQUE DE TOULOUSE ,  THALES

Inventor： Cédric BAUDOIN ,  Yoann COUBLE ,  Thibault DELEU ,  Jean-Baptiste DUPE ,  Emmanuel CHAPUT

IPC: H04B7/204 ,  H04L5/00

Abstract: A method for allocating frequencies in a multibeam satellite radiocommunications system is provided, wherein a geographical service zone covered by the system is broken down into a plurality of cells, distributed into a first grid and a second grid of cells, the cells of the first grid and the cells of the second grid being respectively associated with opposing polarizations of the transmission signals; a cell is broken down into two parts, one part being respectively associated with a colour corresponding to a frequency sub-band and to the polarization of the grid to which it belongs, the total frequency band being broken down into three frequency sub-bands; and two contiguous cell parts of one and the same grid are associated with different colours.

公开(公告)号：US20210368552A1

公开(公告)日：2021-11-25

申请号：US17052183

申请日：2019-05-02

Applicant: THALES ,  CENTRE NATIONAL D'ETUDES SPATIALES ,  INSTITUT SUPERIEUR DE L'AERONAUTIQUE ET DE L'ESPACE ,  INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE

Inventor： Selma ZAMOUM ,  Mathieu GINESTE ,  Jérôme LACAN ,  Marie-Laure BOUCHERET ,  Jean-Baptiste DUPE

IPC: H04W74/08 ,  H04B7/185

Abstract: A method for transmitting data packets through a random-access (RA) transmission channel shared by a plurality of user terminals uses and exploits a function F for assigning and distributing transmission resources F(u) to the user terminals, knowledge of the graph of which is shared by the sending user terminals and the receiving station in a preliminary step. During the decoding of the received packets, the graph {(u, F(u)} of the assigning and distributing function is exploited by the receiving station to minimize, or even to decrease to zero, the number of replica-location correlations required in case of failure of the conventional CRD-SA protocol decoding process.