Discovery system and method for communicating objects closeness

摘要

A system for determining proximity in a wireless network, the system a first and a second nodes comprises each node programmed to periodically detect the nodes in its proximity in all time periods Δ being characterized in that: - the first node includes a transmitter (1) and control means (3) to activate the transmitter (1) for a duration of less than ζ emission time period Δ, the emitter emitting an identification signal for the duration of emission ζ; - the second node includes a receiver (2) and control means (3) to activate the receiver (2) during a reception duration less than the difference between the time period Δ and the length of ζ emission α, listening receiver (2) signals from neighboring nodes during the reception duration α, activating the control means (3) of the second node receiver once per time period Δ.