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1. (WO2018185437) METHODS AND DEVICES FOR FLOATING MAPPING OF A GROUP OF MOBILE TERMINALS

Pub. No.:    WO/2018/185437    International Application No.:    PCT/FR2018/050851
Publication Date: Fri Oct 12 01:59:59 CEST 2018 International Filing Date: Fri Apr 06 01:59:59 CEST 2018
IPC: G01S 5/02
H04W 84/18
Applicants: ORANGE
Inventors: VARELA SANTANA, Thomas
MARTINEZ LOPEZ, Sofia
Title: METHODS AND DEVICES FOR FLOATING MAPPING OF A GROUP OF MOBILE TERMINALS
Abstract:
The invention concerns a method for floating mapping based on the relative positions of synchronised mobile terminals belonging to a group. According to the invention, the method (1) comprises: - broadcasting, by a creator terminal (CH) of the group, a D2D signal with information on the group, - broadcasting, by a mobile terminal (UE) which is a candidate to be part of the group, a D2D localization signal, - estimating by each of at least three of the terminals of the group of a distance between this terminal of the group and the candidate terminal based on the received D2D localization signal, this distance defining a circle of possible relative positions of the candidate terminal around the terminal of the group, - determining a relative position of the candidate terminal on the floating map produced by searching for intersections of the circles of relative positions around the at least three terminals, the candidate terminal being part of the group if the search makes it possible to determine the relative position of the candidate terminal.