公开(公告)号：EP0873627A1

公开(公告)日：1998-10-28

申请号：EP96944171.0

申请日：1996-12-23

申请人： Dynarc AB

发明人： RAMFELT, Lars

IPC分类号： H04L12 ,  H04Q11

CPC分类号： H04Q11/0478 ,  H04J3/07 ,  H04J2203/0044 ,  H04J2203/0046 ,  H04L12/2852 ,  H04L12/422 ,  H04L12/6418 ,  H04L2012/6435 ,  H04L2012/6451 ,  H04L2012/6456 ,  H04L2012/6459

摘要： The present invention relates to a slot reuse method and arrangement for increase of the throughput in a DTM (Dynamic Synchronous Transfer Mode) network. The slot reuse according to the invention comprises extending the DTM block token format to include parameters describing the segment(s) between source and destination node, reserving block token capacity only on the segment(s) between source and destination node, and enabling simultaneous transmissions in the same slot over disjointed segments of the network. The slot reuse can also comprise merging two or more segment-consecutive tokens, representing the same slot range, into a single token when existing in the free pool of a node.

公开(公告)号：EP0873629B1

公开(公告)日：2001-03-28

申请号：EP96944173.2

申请日：1996-12-23

申请人： Dynarc AB

发明人： BOHM, Christer ,  LINDGREN, Per ,  RAMFELT, Lars ,  HIDELL, Markus ,  SJÖDIN, Peter

IPC分类号： H04L12/64 ,  H04L12/40 ,  H04L12/42

CPC分类号： H04L12/6418 ,  H04L2012/6435 ,  H04L2012/6451 ,  H04L2012/6456 ,  H04L2012/6459

摘要： The present invention relates to a method and an arrangement for centralized and distributed management of the capacity in a circuit-switched network with a bus or ring structure, especially a network of DTM-type (Dynamic Synchronous Transfer Mode), which network uses a bandwidth which is partitioned in cycles, which in turn are partitioned in control time slots for signalling and data time slots for transfer of data, and wherein each data time slot is associated with a token. In the centralized version, a first node, called server node, is allocated tokens corresponding to all data time slots which are flowing in one direction in a bus or a ring. A second node is requesting tokens corresponding to a certain capacity from the server node, and the server node makes reservations for and transfers tokens corresponding to requested capacity to the other node in event the server node has requested capacity unutilized. The number of server nodes in the distributed version is between two and the total number of nodes in the bus or ring.

公开(公告)号：EP0873629A1

公开(公告)日：1998-10-28

申请号：EP96944173.0

申请日：1996-12-23

申请人： Dynarc AB

发明人： BOHM, Christer ,  LINDGREN, Per ,  RAMFELT, Lars ,  HIDELL, Markus ,  SJÖDIN, Peter

IPC分类号： H04L12

CPC分类号： H04L12/6418 ,  H04L2012/6435 ,  H04L2012/6451 ,  H04L2012/6456 ,  H04L2012/6459

摘要： The present invention relates to a method and an arrangement for centralized and distributed management of the capacity in a circuit-switched network with a bus or ring structure, especially a network of DTM-type (Dynamic Synchronous Transfer Mode), which network uses a bandwidth which is partitioned in cycles, which in turn are partitioned in control time slots for signalling and data time slots for transfer of data, and wherein each data time slot is associated with a token. In the centralized version, a first node, called server node, is allocated tokens corresponding to all data time slots which are flowing in one direction in a bus or a ring. A second node is requesting tokens corresponding to a certain capacity from the server node, and the server node makes reservations for and transfers tokens corresponding to requested capacity to the other node in event the server node has requested capacity unutilized. The number of server nodes in the distributed version is between two and the total number of nodes in the bus or ring.

公开(公告)号：EP0873628A1

公开(公告)日：1998-10-28

申请号：EP96944172.0

申请日：1996-12-23

申请人： Dynarc AB

发明人： BOHM, Christer ,  LINDGREN, Per ,  RAMFELT, Lars

IPC分类号： H04J3 ,  H04L12

CPC分类号： H04L12/6418 ,  H04L12/2852 ,  H04L2012/6435 ,  H04L2012/6451 ,  H04L2012/6456 ,  H04L2012/6459

摘要： The present invention relates to a defragmentation method and arrangement for increasement of the average block size of free tokens in the nodes of a DTM (Dynamic Synchronous Transfer Mode) network. The defragmentation comprises defining a home node for each token at network startup in such a way that the tokens sharing the same home node will always define at least partly a continuous slot range, sending back free tokens to home nodes when a significant time has passed and, merging two or more slot-consecutive tokens with the same slot range into a single token when existing in the free pool of a node. The defragmentation can be realized in a central or a distributed token management scheme.