Communication device positioning estimation method and system in a wireless telecommunication system

Ahadi, Mohsen; Thienot, Cédric; Kaltenberger, Florian
European Patent EP 4468019A1, 25 May 2023

A positioning estimation method in a wireless telecommunication system (1) comprising a plurality of communication devices (10) connected through wireless telecommunication links (2), reference signals (SRS) being transmitted between a UE (10) whose position is to be estimated and each one of at N gNBs (20) whose positions are known, wherein N ≥ 3, comprising:- obtaining T time values, where these T time values are N Times of Arrival or N-1 Time Differences of Arrival;- transposing the T obtained time values into T distance values and using the known positions of the gNBs, determining a set of T non linear equations;- estimating the UE position coordinates by solving the set of nonlinear equations through a Particle Swarm Optimization method wherein at each iteration of said Particle Swarm Optimization method, a plurality of candidate UE positions corresponding to the swarm particles are updated based upon the position and velocities of the swarm particles.


 


Type:
Patent
Date:
2023-05-25
Department:
Communication systems
Eurecom Ref:
7307
Copyright:
© EURECOM. Personal use of this material is permitted. The definitive version of this paper was published in European Patent EP 4468019A1, 25 May 2023 and is available at :

PERMALINK : https://www.eurecom.fr/publication/7307