Semi-persistent scheduling in a wireless device and network

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 at least one radio resource control message comprising uplink periodic resource allocation configuration parameters indicating a hybrid automatic repeat request (HARQ) process identifier offset;
• determine a HARQ process identifier for a current transmission time interval based on the HARQ process identifier offset;
• and
• transmit a transport block associated with a HARQ process identified by the HARQ process identifier.

A method comprising:

• transmitting, by a base station, at least one radio resource control message comprising uplink periodic resource allocation configuration parameters indicating a hybrid automatic repeat request (HARQ) process identifier offset;
• determining a HARQ process identifier for a current transmission time interval based on the HARQ process identifier offset;
• and
• receiving a transport block associated with a HARQ process identified by the HARQ process identifier.