Apparatuses, methods, and systems are disclosed for determining a priority order based on uplink transmission parameters. One apparatus includes a processor that: indicates uplink transmission parameters to a medium access control layer, wherein the uplink transmission parameters correspond to an uplink grant, the uplink transmission parameters comprise an indication of a numerology and an uplink transmission duration, and the numerology comprises a subcarrier spacing; and assigns, by the medium access control layer, resources allocated by the uplink grant to the logical channels based on the uplink transmission parameters and a logical channel priority of the plurality of logical channels, wherein each logical channel of the plurality of logical channels is configured with a set of numerologies allowed by the respective logical channel, a maximum uplink transmission duration, and information indicating whether a data of the respective logical channel is allowed to be transmitted on a configured grant.