Disclosed are methods as well radio network nodes and user equipments (UE) that are suitable for overload control in a communication network. A radio network node may, upon receiving a random access preamble from an UE, determine whether there exists an overload condition. In response to a determination that an overload condition exists, the radio network node may configure a MAC PDU220 to accompany a E/T/RAPID subheader 212 with a request to extend the time period during which the UE waits for reception of a MAC RAR response.