Global Patent Index - EP 1074100 A1

EP 1074100 A1 2001-02-07 - ABSOLUTE TIME SYNCHRONIZATION FOR MOBILE POSITIONING IN A CELLULAR COMMUNICATIONS SYSTEM

Title (en)

ABSOLUTE TIME SYNCHRONIZATION FOR MOBILE POSITIONING IN A CELLULAR COMMUNICATIONS SYSTEM

Title (de)

ABSOLUTE ZEITSYNCHRONISATION FÜR MOBILE POSITIONSBESTIMMUNG IN EINEM ZELLULAREN KOMMUNIKATIONSSYSTEM

Title (fr)

SYNCHRONISATION EN TEMPS ABSOLU POUR LA LOCALISATION DE TERMINAUX MOBILES DANS UN SYSTEME DE COMMUNICATION CELLULAIRE

Publication

EP 1074100 A1 (EN)

Application

EP 99947059 A

Priority

  • SE 9900579 W
  • US 6577198 A

Abstract (en)

[origin: WO9956413A1] A method and system are diclosed for time-synchronizing a plurality of radio base stations (RBS1-4) in a cellular communications network. A reference terminal (106) (e.g., modified standard mobile terminal) is placed at known locations at each RBS site in the network, preferably as close to the base station antenna (104) as possible. The reference terminal (106) includes an absolute time reference function, which is used to synchronize the RBSs (102) with respect to a common absolute time reference. Consequently, a positioning algorithm can be used to determine the position of a mobile terminal (12) in the network with a relatively high degree of accuracy.

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

H04B 7/26; G01S 5/06; H04J 3/06

IPC 8 full level (invention and additional information)

G01S 1/02 (2010.01); G01S 5/02 (2010.01)

CPC (invention and additional information)

H04W 56/006 (2013.01); G01S 1/026 (2013.01); G01S 5/02 (2013.01)

Citation (search report)

See references of WO 9956413A1

Designated contracting state (EPC)

DE FI GB

EPO simple patent family

WO 9956413 A1 19991104; AU 4297999 A 19991116; CA 2330280 A1 19991104; CN 1306708 A 20010801; EP 1074100 A1 20010207

INPADOC legal status


2004-06-02 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031101

2004-05-06 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

2001-02-07 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000929

2001-02-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FI GB