Pair-assignment of rf-sensing nodes for a rf context-sensing arrangement

Abstract

The invention is related to a pair-assignment device () comprising a sensing-node position ascertainment unit () configured to ascertain position information (P.I.) pertaining to respective positions of external RF-sensing nodes () with respect to a predefined sensing volume () of a RF context-sensing arrangement and a pair-assigning unit () configured to assign, using the ascertained position information, at least one transmitter-receiver pair among the individual RF-sensing nodes of the RF context-sensing arrangement to perform a RF context-sensing function, to assign to the RF sensing nodes of the given transmitter-receiver pair a transmitter role (Tx) and a receiver role (Rx), respectively. The pair-assignment device then provides pair information indicative of the at least one assigned transmitter-receiver pair and the assigned transmitter and receiver roles and thus enables an increase of tolerance of the RF context-sensing arrangement against changes in the position of movable objects.