公开(公告)号：JPH04233353A

公开(公告)日：1992-08-21

申请号：JP12617591

申请日：1991-05-29

Applicant: ADVANCED MICRO DEVICES INC

Inventor： FUIRUTSUIN FUIRUUTSUMAN ,  GURURAJI SHIN

IPC: H04B10/20 ,  H04L12/433

Abstract: PURPOSE: To improve transmission of asynchronous data in an FDDI network. CONSTITUTION: A standard FDDI precedence algorithm is executed by programming this algorithm as a function of a token hold time(THT) in the direction of THT threshold reduction or increase for asynchronous service. If it is programmed in the direction of threshold reduction, all of data having a high priority is transmitted to a network before data having a low priority is transmitted. If it is programmed in the direction of threshold increase, data having the highest priority is first transmitted and data having a low priority level is transmitted, and this operation is repeated hereafter until the token hold time which has not been expired is made shorter than the threshold for precedence. Consequently, at least several data out of all priority-assigned data pending for transmission are transmitted to a medium at the time of acquisition of each token.