There is provided an apparatus, said apparatus comprising means for receiving, at a user equipment, a scheduling grant for a first number, M, of transport blocks, wherein the scheduling grant comprises an indication of a second number, N, of transport blocks to be transmitted or received before a time delay, wherein M is greater than 1 and N is less than or equal to M, causing transmission or reception of a first group of N transport blocks and, if N is less than M, after the time delay, causing transmission or reception of a further group of up to N transport blocks followed by the time delay, until M transport blocks are caused to be transmitted or received.