US 12,739,693 B2Granted

Method for the conjoint communication and sensing of the environment of a network node

AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives

InventorMohamed Sana

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Abstract

The present invention relates to a conjoint communication and sensing method for detecting the movement of an obstacle in the environment of a node in a wireless telecommunication network and, where applicable, localising this obstacle. The node divides its environment into angular sectors and measures, at a plurality of observation instants, a quantity characteristic of the signal-to-noise-plus-sector-interference ratio in each of these sectors (410-420) to form a sensing matrix (Γτ,n(t)). A blind separation of sources is implemented to extract from this matrix a matrix of sector contributions ( Γ τ , n ( · ) ( t ) ) of the interfering signals (430). The movement of any obstacle is detected from the history of the sector contributions (440), which makes it possible, where applicable, to predict a blockage situation (450) and to modify the allocation of the radio resources accordingly (460).

Claims10

Dependent claims

Conjoint communication and sensing method for sensing a movement of an obstacle in an environment of a node, referred to as a reference node, of a wireless communication network, said reference node having previously established a radio link with a sending node of the network, said method comprising:

determining a plurality of non-overlapping angular sectors in said environment and vertices of which are the reference node, as well as a plurality of observation instants;
measuring, in each of the observation instants, a measurement of a quantity characteristic of a signal-to-noise-plus-sector-interference ratio on said radio link, for each of the angular sectors, and constructing a sensing matrix
(
Γ
τ
,
n
(
t
)
,
Γ
τ
,
n
j
0
(
t
)
)
,
the elements of which are the measurements of said characteristic quantity;
implementing a blind separation of sources using said sensing matrix and extracting, therefrom, a matrix of sector contributions
(
Γ
τ
,
n
(
·
)
(
t
)
,
Γ
τ
,
n
j
0
(
·
)
(
t
)
)
of interfering signals in the plurality of angular sectors;
and
detecting the movement of the obstacle in the environment of the reference node from at least one history of said sector contributions.

49 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/395,850Filed 26 Dec 2023
Priority: FR 22 1456227 Dec 2022
Published: US 2024/0214861 A127 Jun 2024
Granted: 15 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04W 28/0236
Based on communication conditions: radio quality, e.g. interference, losses or delay
H04W 4/38
Services specially adapted for particular environments, situations or purposes: for collecting sensor information
H04W 24/08
Supervisory, monitoring or testing arrangements: testing, supervising or monitoring using real traffic
H04W 28/0226
Traffic management, e.g. flow control or congestion control: based on location or mobility