A first radio terminal of a radio communications network, in particular a V2X UE of a V2X network, wherein said first radio terminal comprises at least one processor, at least one memory comprising computer program code, at least one communication module, and at least one antenna, wherein the computer program code and the memory are configured, together with the at least one processor, the at least one communication module, and the at least one antenna, to cause the radio terminal at least to: determine a SPS configuration for the first radio terminal, wherein the SPS configuration indicates a set of SPS, semi-persistently scheduled, radio resources (rr1-rr4) of a shared device-to-device radio channel, in particular of a sidelink channel, SL-CH, wherein the indicated SPS radio resources (rr1-rr4) are intended for a transmission by the first radio terminal; transmit, towards at least one second radio terminal, data via a first subset of the set of the SPS radio resources (rr1-rr4); select at least one sensing resource (sr) out of the set of SPS radio resources (rr1-rr4); sense the at least one sensing resource (sr); determine a contention indicator (CONT) in dependence on the sensing of the at least one sensing resource (sr); characterized in that the first radio terminal is further caused to: refrain from transmitting data via a second subset of the set of SPS radio resources (rr1-rr4) if the contention indicator (CONT) indicates a contention situation at the at least one sensing resource (sr), wherein the at least one sensing resource (sr) out of the set of SPS radio resources (rr1-rr4) is disjoint from the second subset of the set of SPS radio resources (rr1-rr4); and resume its transmission (112, 116), towards the at least one second radio terminal, of data via the second subset of the set of SPS radio resources (rr1-rr4) if the contention indicator (CONT) indicates no contention situation at the at least one sensing resource (sr). determine a SPS configuration for the first radio terminal, wherein the SPS configuration indicates a set of SPS, semi-persistently scheduled, radio resources (rr1-rr4) of a shared device-to-device radio channel, in particular of a sidelink channel, SL-CH, wherein the indicated SPS radio resources (rr1-rr4) are intended for a transmission by the first radio terminal; transmit, towards at least one second radio terminal, data via a first subset of the set of the SPS radio resources (rr1-rr4); select at least one sensing resource (sr) out of the set of SPS radio resources (rr1-rr4); sense the at least one sensing resource (sr); determine a contention indicator (CONT) in dependence on the sensing of the at least one sensing resource (sr); characterized in that the first radio terminal is further caused to: refrain from transmitting data via a second subset of the set of SPS radio resources (rr1-rr4) if the contention indicator (CONT) indicates a contention situation at the at least one sensing resource (sr), wherein the at least one sensing resource (sr) out of the set of SPS radio resources (rr1-rr4) is disjoint from the second subset of the set of SPS radio resources (rr1-rr4); and resume its transmission (112, 116), towards the at least one second radio terminal, of data via the second subset of the set of SPS radio resources (rr1-rr4) if the contention indicator (CONT) indicates no contention situation at the at least one sensing resource (sr). refrain from transmitting data via a second subset of the set of SPS radio resources (rr1-rr4) if the contention indicator (CONT) indicates a contention situation at the at least one sensing resource (sr), wherein the at least one sensing resource (sr) out of the set of SPS radio resources (rr1-rr4) is disjoint from the second subset of the set of SPS radio resources (rr1-rr4); and resume its transmission (112, 116), towards the at least one second radio terminal, of data via the second subset of the set of SPS radio resources (rr1-rr4) if the contention indicator (CONT) indicates no contention situation at the at least one sensing resource (sr).