Systems, methods, and apparatus for communicating transport block repetitions are disclosed. An example method performed by a wireless device includes receiving an assignment of radio resources corresponding to two or more transmissions with first start and length pairs, each transmission comprising a transport block repetition, where at least one of the first start and length pairs violates a time-domain allocation restriction. The wireless device determines second start and length pairs for the two or more transmissions such that the time-domain allocation restriction is not violated. The wireless device transmits the two or more transmissions according to the determined second start and length pairs.