公开(公告)号：EP0763915A3

公开(公告)日：1999-09-15

申请号：EP96114952.3

申请日：1996-09-18

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Shimojo, Yoshimitsu

IPC分类号： H04L12/56 ,  H04Q11/04

CPC分类号： H04L12/5601 ,  H04L47/263 ,  H04L47/266 ,  H04L47/30 ,  H04L47/50 ,  H04L47/522 ,  H04L47/60 ,  H04L47/621 ,  H04L47/6215 ,  H04L47/6255 ,  H04L47/6265 ,  H04L49/25 ,  H04L49/254 ,  H04L49/3018 ,  H04L49/3027 ,  H04L49/3081 ,  H04L49/505 ,  H04L49/506 ,  H04L2012/5635 ,  H04L2012/5636 ,  H04L2012/5651 ,  H04L2012/5681 ,  H04L2012/5682

摘要： A packet transfer device that can be easily realized even when a number of input ports is large. Each input buffer temporarily stores entered packets class by class, and outputs packets of a selected class specified by the control unit, while the control unit determines the selected class of packets to be outputted from the input buffers according to a packet storage state in the packet storage units of the input buffers as a whole for each class. Each input buffer can temporarily store entered packets while selecting packets to be outputted at a next phase, and the control unit can specify packets to be selected in the input buffers according to an output state of packets previously selected in the input buffers as a whole. Packets stored in the buffer can be managed in terms of a plurality of groups, and each packet entered at the buffer can be distributed into a plurality of groups so that packets are distributed fairly among flows. The packets belonging to one of a plurality of groups are then outputted from the buffer toward the output port. A packet transfer at the buffer can be controlled by issuing a packet transfer command according to a log of packet transfer commands with respect to the buffer and a packet storage state of the buffer.

公开(公告)号：EP0810809A3

公开(公告)日：1998-12-16

申请号：EP97480016

申请日：1997-04-08

申请人： IBM

发明人： CALVIGNAC JEAN ,  ORSATTI DANIEL ,  VERPLANKEN FABRICE

IPC分类号： H04L12/54 ,  H04L12/70 ,  H04L12/863 ,  H04L12/911 ,  H04L12/935 ,  H04Q11/04 ,  H04L12/56

CPC分类号： H04L47/72 ,  H04L12/5602 ,  H04L47/50 ,  H04L47/6265 ,  H04L49/3081 ,  H04L2012/5636 ,  H04L2012/5645 ,  H04L2012/5651 ,  H04L2012/5679 ,  H04L2012/568 ,  H04Q11/0478

摘要： The invention discloses a method and an apparatus for use in the packet networks and particularly Asynchronous Transfer Mode (ATM) networks to support traffic of connections requiring a minimum bandwidth at connection establishment. The method and the apparatus further support any mixed traffic including connections requiring a minimum bandwidth, a fixed reserved bandwidth or no bandwidth at connection establishment.
The invention consists in using a first scheduler triggered by absolute time for scheduling the Minimum Service connections up to a rate corresponding to their reserved minimum bandwidth reserved, a second scheduler and a queue of Minimum Service connection identiers for communication between the two scheduling schemes.
With the
dual scheduling mechanism of the invention the minimum bandwidth for connections reserving a minimum bandwidth at connection establishment is guaranteed in each point of the connection path and at any time, the level of fairness of the remaining bandwidth sharing depending on the quality of the second scheduler.

公开(公告)号：EP0810809A2

公开(公告)日：1997-12-03

申请号：EP97480016.1

申请日：1997-04-08

申请人： International Business Machines Corporation

发明人： Calvignac, Jean ,  Orsatti, Daniel ,  Verplanken, Fabrice

IPC分类号： H04Q11/04 ,  H04L12/56

CPC分类号： H04L47/72 ,  H04L12/5602 ,  H04L47/50 ,  H04L47/6265 ,  H04L49/3081 ,  H04L2012/5636 ,  H04L2012/5645 ,  H04L2012/5651 ,  H04L2012/5679 ,  H04L2012/568 ,  H04Q11/0478

摘要： The invention discloses a method and an apparatus for use in the packet networks and particularly Asynchronous Transfer Mode (ATM) networks to support traffic of connections requiring a minimum bandwidth at connection establishment. The method and the apparatus further support any mixed traffic including connections requiring a minimum bandwidth, a fixed reserved bandwidth or no bandwidth at connection establishment.
The invention consists in using a first scheduler triggered by absolute time for scheduling the Minimum Service connections up to a rate corresponding to their reserved minimum bandwidth reserved, a second scheduler and a queue of Minimum Service connection identiers for communication between the two scheduling schemes.
With the dual scheduling mechanism of the invention the minimum bandwidth for connections reserving a minimum bandwidth at connection establishment is guaranteed in each point of the connection path and at any time, the level of fairness of the remaining bandwidth sharing depending on the quality of the second scheduler.