Global patent index - EP 1048151 A1

EP 1048151 A1 2000-11-02 - METHOD FOR PROVIDING DELAYS INDEPENDENT OF SWITCH SIZE IN A CROSSBAR SWITCH WITH SPEEDUP

Title (en)

METHOD FOR PROVIDING DELAYS INDEPENDENT OF SWITCH SIZE IN A CROSSBAR SWITCH WITH SPEEDUP

Title (de)

VERFAHREN ZUR KOPPELFELDGRÖSSE-UNABHÄNGIGEN VERZÖGERUNG IM KREUTZSCHIENENKOPPELFELD MIT ERHÖHTER GESCHWINDIGKEIT

Title (fr)

PROCEDE ASSURANT DES DELAIS INDEPENDANTS DE LA TAILLE DES REPARTITEURS DANS UN CENTRAL CROSSBAR ACCELERE

Publication

EP 1048151 A1 (EN)

Application

EP 99903061 A

Priority

  • US 9900684 W
  • US 574098 A

Abstract (en)

[origin: WO9935792A1] A scheduling and arbitration scheme in an input-buffered switch with speedup deterministic bandwidth and delay performance independent of switch size is presented. Within the framework of a crossbar architecture having a plurality of input channels and output channels, the scheduling and arbitration scheme determines the sequence of fixed-size packet or cell transmissions between the input channels and output channels satisfying the constraint that only one cell can leave an input channel and enter an output channel per phase in such a way that the arbitration delay is bounded for each cell awaiting transmission at the input channel. If the fixed-sized packets result from fragmentation of variable size packets, the scheduling and arbitration scheme implies that if delay guarantees are provided at the cell level, they are also provided to the initial variable size packets, re-assembled at the output channel, as well.

IPC 1-7 (main, further and additional classification)

H04L 12/56; H04Q 11/04

IPC 8 full level (invention and additional information)

H04L 12/937 (2013.01); H04Q 11/04 (2006.01); H04L 12/933 (2013.01); H04L 12/935 (2013.01)

CPC (invention and additional information)

H04L 49/254 (2013.01); H04Q 11/0478 (2013.01); H04L 49/101 (2013.01); H04L 49/3018 (2013.01); H04L 49/3027 (2013.01); H04L 49/3045 (2013.01)

Citation (search report)

See references of WO 9935792A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9935792 A1 19990715; AU 2317499 A 19990726; AU 736780 B2 20010802; CA 2318163 A1 19990715; EP 1048151 A1 20001102

INPADOC legal status

2005-02-23 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040817

2002-10-16 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: ENTERASYS NETWORKS, INC.

- Ref Legal Event Code: RAP1

2000-11-02 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000802

2000-11-02 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB