HARQ Process Identifier Offset for Periodic Resource Allocation

A wireless device comprising:

• one or more processors;
• and
• memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
• receive a radio resource control message comprising uplink periodic resource allocation configuration parameters indicating:
• a hybrid automatic repeat request (HARQ) process identifier offset;
• and
• a number of uplink semi-persistent HARQ processes;
• determine a HARQ process identifier for a current transmission time interval as a sum of the HARQ process identifier offset and a value determined based on:
• the current transmission time interval;
• and
• the number of uplink semi-persistent HARQ processes;
• and
• transmitting a transport block associated with a HARQ process identified by the HARQ process identifier.