A network device and UEs are described, which support preemption of a transmission over a first link and provides to a first UE preemption information indicative of a first spatial filter that is to be preempted by the first UE for transmission over the first link. A second UE receives an indication from a network device to: perform a measurement of a reference signal on at least one second spatial filter, or transmit a reference signal on at least one second spatial filter; receive the reference signal from another UE and perform the measurement on the at least one second spatial filter, or transmit the reference signal to another UE on the at least one second spatial filter, according to the indication received from the network device; wherein the at least one second spatial filter is allocated by the UE for receiving over a second link.