Global Patent Index - EP 1078314 A1

EP 1078314 A1 2001-02-28 - METHOD AND APPARATUS FOR SYNCHRONISATION OF NODES

Title (en)

METHOD AND APPARATUS FOR SYNCHRONISATION OF NODES

Title (de)

VERFAHREN UND GERÄT ZUR SYNCHRONISATION VON KNOTENPUNKTEN

Title (fr)

PROCEDE ET APPAREIL DE SYNCHRONISATION DE NOEUDS

Publication

EP 1078314 A1 (EN)

Application

EP 99927008 A

Priority

  • SE 9900613 W
  • SE 9801631 A

Abstract (en)

[origin: WO9959052A1] The present invention relates to a method and apparatus for synchronising at least one node (N1-N4) in a net (n), which node (N1-N4) is used as an example for packet oriented transmission. A server (C), generating a stable frequency (fs), and the node (N1-N4) measures the number of cycles of the stable frequency (fs) respective the number of cycles of a local frequency (f1-f4), generated by the node (N1-N4). These measurements are started respective stopped at the instant of time when a phase of a signal, generated by a power network (PN) connected to the server (C) and the node (N1-N4), equals zero. The results of the measurements are compared and the node (N1-N4) is adjusted accordingly. Measurements can continuously be performed by the server (C) and the node (N1-N4).

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

G06F 1/12; H04Q 7/30

IPC 8 full level (invention and additional information)

H04L 7/00 (2006.01); H04B 7/26 (2006.01); H04J 3/06 (2006.01); H04Q 7/36 (2006.01)

CPC (invention and additional information)

H04J 3/0658 (2013.01); H04B 3/54 (2013.01)

Citation (search report)

See references of WO 9959052A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9959052 A1 19991118; AU 4400899 A 19991129; CA 2331963 A1 19991118; CN 1309786 A 20010822; EP 1078314 A1 20010228; JP 2002514877 A 20020521; SE 512034 C2 20000117; SE 9801631 D0 19980511; SE 9801631 L 19991112

INPADOC legal status


2002-07-24 [18W] WITHDRAWN

- Date of withdrawal: 20020516

2001-02-28 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001104

2001-02-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB