SYSTEM AND METHOD TO MEASURE UE-TO-UE DISTANCE BASED ON D2D SIDELINK CHANNEL

摘要

New method for measuring UE-to-UE distance based on D2D sidelink channel or signal. The network configures the two UEs to perform both transmission and reception of D2D sidelink channel or signal; the UEs determine in time domain the cycle boundaries of the same cycle duration and use the cycle boundaries as the timing references to measure transmission timing and receiving timing; each UE reports to network one transmission timing and one or more receiving timings, or one or more modulo transmission-to-reception time differences; each UE reports to network one transmission identity associated with transmitted D2D sidelink channel or signal and one or more transmission identities each of which associated with a received D2D sidelink channel or signal; the network obtaining the reports from the two UEs matches the timing information based on the associated transmission identities and calculates the UE-to-UE distance based on the matched timing information.