A wireless device receives one or more radio resource control messages comprising first periodic resource allocation configuration parameters comprising a first periodicity parameter of a first periodic resource allocation. Downlink control information indicating activation of the first periodic resource allocation is received. The downlink control information comprises one or more first fields. A transport block associated with a hybrid automatic repeat request (HARQ) process identifier is transmitted via radio resources associated with the first periodic resource allocation. The HARQ identifier is based on the one or more first field and the first periodicity parameter.