Apparatuses, methods, and systems are disclosed for device-to-device transmission. One apparatus includes a receiver that receives a control signal containing a first set of bits indicating a frequency band reference and a second set of bits indicating a frequency band pattern. In such an embodiment, the frequency band pattern is based on a unit size of the frequency band reference. Moreover, the apparatus includes a processor that identifies a resource assignment from both the frequency band reference and the frequency band pattern. In some embodiments, the apparatus includes a transmitter that transmits data on the resource assignment.