1. A method for selecting resources for cyclic transmissions from a wireless communication device during predefined target transmission windows on a sidelink communications resource comprising a plurality of subframes, the method comprising:sensing periodic transmissions of periodicity p from at least one other wireless communication device on the sidelink communications resource by monitoring subframes, SFs, contained in a variable number N of time windows of fixed duration, wherein monitoring subframes includes:
decoding transmitted data from the at least one other wireless communication device; and
deriving, from the decoded data, if and when the at least one other wireless communication device will use a same resource for future transmissions,
wherein the subframes for monitoring are offsets of J*100 ms from the target transmission windows wherein J is a representation of a selected set of subframe numbers.