An asynchronous transfer mode network has a controller for a buffer where asynchronous transfer mode cells successively enter into a queue formed therein, and the controller determines a degree of congestion status on the basis of the length of queue and a lapse of time after the length exceeds the least...http://www.google.de/patents/US6438138?utm_source=gb-gplus-sharePatent US6438138 - Buffer controller incorporated in asynchronous transfer mode network for changing transmission cell rate depending on duration of congestion and method for controlling thereof
