Global patent index - EP 0993722 A2

EP 0993722 A2 2000-04-19 - METHOD FOR PROCESSING ATM CELLS IN BIDIRECTIONAL DATA FLOWS

Title (en)

METHOD FOR PROCESSING ATM CELLS IN BIDIRECTIONAL DATA FLOWS

Title (de)

VERFAHREN ZUR VERARBEITUNG VON ATM-ZELLEN IN BIDIREKTIONALEN DATENSTRÖMEN

Title (fr)

PROCEDE POUR LE TRAITEMENT DE CELLULES MTA DANS DES FLUX DE DONNEES BIDIRECTIONNELS

Publication

EP 0993722 A2 (DE)

Application

EP 98942490 A

Priority

  • DE 9801835 W
  • DE 19728690 A

Abstract (en)

[origin: WO9901954A2] The invention relates to a method for processing ATM cells in upstream and downstream bidirectional data flows in an ATM component in which the processing speed is greater than the mean cell rate and empty cycles without ATM cells are present in the cell flow. To allow for two-way alternate processing of upward and downward cells, the processing logic (VAL) of the component (BST) issues requests (EC up req, EC down req) for empty cycles upstream and downstream to an empty- cycle control unit (LZS) so as to obtain processing time. The cells of the downstream data flow can be stored and released separately in a buffer (BUF) so that in this way empty cycles can be generated downstream. Should an empty cycle occur, an upstream request for empty cycles (EC up req) is processed as a priority in relation to a simultaneous downstream request. In case of a downstream empty cycle request (EC down req) an empty cycle is released with a delay of one cycle period if there is a simultaneous upstream request. If this is not the case, it is released immediately.

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

H04L 12/56; H04Q 11/04

IPC 8 full level (invention and additional information)

H04L 12/54 (2013.01); H04L 12/935 (2013.01); H04Q 11/04 (2006.01); H04L 12/70 (2013.01)

CPC (invention and additional information)

H04Q 11/0478 (2013.01); H04L 12/5601 (2013.01); H04L 49/3081 (2013.01); H04L 2012/5625 (2013.01)

Citation (search report)

See references of WO 9901954A3

Designated contracting state (EPC)

BE CH DE ES FR GB IT LI NL

EPO simple patent family

WO 9901954 A2 19990114; WO 9901954 A3 19990401; CA 2295221 A1 19990114; DE 19728690 A1 19990225; DE 19728690 C2 19990902; EP 0993722 A2 20000419; US 6667979 B1 20031223

INPADOC legal status

2006-03-08 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20050902

2000-04-19 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991217

2000-04-19 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE CH DE ES FR GB IT LI NL