To reduce the transport amount of MMT data transport control signaling.Detailed information regarding files under a directory agreeing with an MPU, is not transported in a DDMT, and detailed information regarding items under the MPU agreeing with the directory is not transported in a DAMT. A file describing the detailed information regarding the items under the MPU agreeing with the directory, is described as one item and is passed to the MPU so that transport is performed. In addition, an MPU node descriptor indicating that the MPU agrees with the directory, is arranged into the DAMT so that matching with the directory is performed.