Disclosed is a RF system (100) having at least one transceiver node device (110, 112, 114, 116, 118, 120) that is capable to assume, at a controllable point in time and/or for a controllable time period, each one of the following roles (210, 220, 230, 240): a first role (210) comprising listening or answering to a message from an active communication session, in particular ranging sessions, a second role (220) comprising listening for new communication sessions, in particular ranging sessions, a third role (230) comprising staying idle, and optionally a third role (230) comprising scanning for ongoing communication sessions, in particular ranging sessions, of other RF systems. The RF system (100) further comprises a controller device (134) communicatively interlinked with the at least one, in particular each, transceiver node device (110, 112, 114, 116, 118, 120) and capable to control an assignment of roles to the at least one, in particular each, transceiver node device, in particular to control for a transceiver node device a point in time to assume a role and/or a duration of performing a role and/or a duty cycle of performing a role (210, 220, 230, 240).