公开(公告)号：US20190341996A1

公开(公告)日：2019-11-07

申请号：US16323750

申请日：2017-07-27

Applicant: AIRBUS DEFENCE AND SPACE SAS

Inventor： BENJAMIN GADAT ,  LYONEL BARTHE ,  THIBAULT MAISONNAT ,  ARNAUD COLLIN

IPC: H04B7/185 ,  H04L25/02 ,  H04L27/00 ,  H04B17/21

Abstract: A method for detecting useful signals in an overall signal. Each useful signal may be affected with a frequency drift. In the detection phase, frequency spectra for detecting the overall signal for multiple detection time windows are calculated and useful signals according to the detection frequency spectra are detected. In the estimation phase, for each useful signal detected: the frequency of the overall signal for multiple frequency drift values is reset. In the estimation phase, for each useful signal detected, a frequency spectrum is calculated for the estimation of the overall signal for each frequency drift value over an estimation time window having the useful signal detected and of a duration higher than the detection time window. In the estimation phase, for each useful signal detected, the frequency drift is estimated affecting the useful signal detected according to the estimation frequency spectra.

公开(公告)号：US20190230658A1

公开(公告)日：2019-07-25

申请号：US16336299

申请日：2017-09-29

Applicant: AIRBUS DEFENCE AND SPACE SAS

Inventor： BENJAMIN GADAT ,  VINCENT DESLANDES

IPC: H04W72/04 ,  H04B7/185 ,  H04J13/00 ,  H04W4/80 ,  H04B1/713

Abstract: A method for transmitting, by a terminal, a message destined for a receiver station of a wireless communication system. The message being transmitted on a shared channel on which the transmission of messages is performed at the start of predetermined time intervals, termed slots. Data to be included in the message to be transmitted is encoded. The encoded data is distributed between Nb sub-messages of the message to be transmitted, Nb being an integer number greater than or equal to two. A slot is selected for transmitting the message. Nb transmission frequencies are selected, each respectively associated with the Nb sub-messages of the message. The message is transmitted at the start of the selected slot, by successively transmitting the sub-messages on their respective associated transmission frequencies.