A data transfer management method and apparatus for reducing collision during data transfer. The invention stores a data length (m) in byte units of a plurality of packets capable of being transferred in a predetermined transmission time interval, stores the predetermined transmission time interval (t),...http://www.google.de/patents/US6400819?utm_source=gb-gplus-sharePatent US6400819 - Method and apparatus for executing communication in real-time and data structure for real-time data communication