Global Patent Index - EP 1025654 A1

EP 1025654 A1 2000-08-09 - IMPROVEMENTS IN, OR RELATING TO, DIGITAL TRANSMISSION

Title (en)

IMPROVEMENTS IN, OR RELATING TO, DIGITAL TRANSMISSION

Title (de)

VERBESSERUNGEN IN, ODER BEZÜGLICH, DIGITALER ÜBERTRAGUNGEN

Title (fr)

AMELIORATIONS APPORTEES A DES TRANSMISSIONS NUMERIQUES

Publication

EP 1025654 A1 (EN)

Application

EP 98953128 A

Priority

  • SE 9801973 W
  • SE 9704009 A

Abstract (en)

[origin: WO9923764A1] The present invention combines the advantages of OFDD with Frequency Divided Duplex (FDD), thus enabling the reach of a vdsl transmission system to be extended. The present invention requires that: the use of an extra cyclic prefix; and for longer lines, the frequencies above the FDD band are not used, in other words. This in turn means that: time-synchronisation is performed between all transmitters in the ONUs and the NTs; timing advance is calculated from the line length; and different sub-carriers are used in up-stream and down-stream directions.

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

H04B 3/50; H04L 5/06

IPC 8 full level (invention and additional information)

H04J 11/00 (2006.01); H04B 3/02 (2006.01); H04B 3/50 (2006.01); H04L 5/02 (2006.01); H04L 5/14 (2006.01)

CPC (invention and additional information)

H04L 5/143 (2013.01); H04L 5/023 (2013.01)

Citation (search report)

See references of WO 9923764A1

Designated contracting state (EPC)

CH DE DK ES FI FR GB IT LI NL SE

EPO simple patent family

WO 9923764 A1 19990514; EE 200000183 A 20010416; EP 1025654 A1 20000809; JP 2001522190 A 20011113; NO 20002138 A 20000629; NO 20002138 D0 20000427; SE 510641 C2 19990614; SE 9704009 D0 19971103; SE 9704009 L 19990504

INPADOC legal status


2003-06-25 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20021211

2001-08-08 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: STMICROELECTRONICS N.V.

- Ref Legal Event Code: RAP1

2001-05-16 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010402

2000-08-09 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000605

2000-08-09 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): CH DE DK ES FI FR GB IT LI NL SE

2000-08-09 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: LT PAYMENT 20000605;LV PAYMENT 20000605