WO1997029557A1 - Procede d'evaluation des inclinaisons des antennes - Google Patents

Procede d'evaluation des inclinaisons des antennes Download PDF

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Publication number
WO1997029557A1
WO1997029557A1 PCT/SE1997/000030 SE9700030W WO9729557A1 WO 1997029557 A1 WO1997029557 A1 WO 1997029557A1 SE 9700030 W SE9700030 W SE 9700030W WO 9729557 A1 WO9729557 A1 WO 9729557A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
values
antenna
field strength
utilized
Prior art date
Application number
PCT/SE1997/000030
Other languages
English (en)
Inventor
Mats Ragnarsson
Original Assignee
Telia Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telia Ab filed Critical Telia Ab
Publication of WO1997029557A1 publication Critical patent/WO1997029557A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools

Definitions

  • the present invention relates to a method at a mobile telecommunications system which allows evaluation of antenna tiltings.
  • a base station has excess range when a radio signal reaches further (geographically) than what is good from interference point of view. It can cause problems for other base stations with the same or neighbouring frequencies which then will be interfered with. This often can be remedied by tilting the antennas of the interfering base station. When an antenna is tilted, one changes the direction of its main lobe in the vertical plane from having pointed in straight horizontal direction to point a number of degrees below the horizon. This results in that the signal from the antenna is attenuated at places which are located far from the antenna and remains unchanged or will increase at places which are located near the antenna.
  • tilt angle is meant the angle in which the main lobe of the antenna in the vertical plane is arranged in relation to the horizontal plane. The tilting can be made both mechanically and electronically.
  • the aim with the present invention consequently is to provide a method which is less resource demanding and more cost efficient than the above mentioned method to measure the field strength at just any places within a geographical area.
  • the above mentioned aim is achieved by a method which is characterized in that statistical measurement data of the field strength values of the mobile units at different geograhical places are utilized both before and after the antenna tilting, at which one by reading and comparing the measurement data gets a picture of how the antenna tilting changes the coverage area of the base station.
  • CTR Cell Traffic Recording
  • CTR Cell Traffic Recording
  • By reading the statistics one can get a picture of how the tilting has effected the coverage area for the base station with an accuracy of 0,5 km distance from the base station.
  • BSC Base Station Controller
  • the A-bis interface is the interface which is used between the base station and the BSC in the GSM-system. It should of course be realized that for other TDMA-systems than GSM, there is used some other, equal interface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Procédé permettant d'évaluer, pour un système de télécommunication mobile, les inclinaisons des antennes en utilisant des données statistiques provenant de mesures d'enregistrement du trafic au niveau de la cellule ou de mesures correspondantes. De ces mesures d'enregistrement du trafic au niveau de la cellule on déduit des valeurs de mesure de l'intensité du signal à la fois pour la liaison montante et pour la liaison descendante, ainsi que des valeurs de synchronisation anticipée (TA). En convertissant les distances géographiques en unités de TA on obtient des statistiques de la puissance moyenne des signaux répartis en fonction de la TA. Cette opération est effectuée avant et après l'inclinaison. En consultant ces statistiques on obtient une évaluation de l'importance selon laquelle l'inclinaison de l'antenne a modifié la zone couverte par la station de base.
PCT/SE1997/000030 1996-02-12 1997-01-13 Procede d'evaluation des inclinaisons des antennes WO1997029557A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9600502A SE9600502L (sv) 1996-02-12 1996-02-12 Metod för utvärdering av antenntiltningar
SE9600502-0 1996-02-12

Publications (1)

Publication Number Publication Date
WO1997029557A1 true WO1997029557A1 (fr) 1997-08-14

Family

ID=20401355

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1997/000030 WO1997029557A1 (fr) 1996-02-12 1997-01-13 Procede d'evaluation des inclinaisons des antennes

Country Status (2)

Country Link
SE (1) SE9600502L (fr)
WO (1) WO1997029557A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000077532A1 (fr) * 1999-06-14 2000-12-21 Telia Ab Procedure et systeme dans un systeme de telecommunications hertziennes
WO2001013526A2 (fr) * 1999-08-19 2001-02-22 Invertix Corporation Optimisation d'un reseau radiotelephonique
WO2002033997A2 (fr) * 2000-10-16 2002-04-25 Wireless Online, Inc. Procede et systeme de calibrage de pylones d'antennes pour diminuer l'interference cellulaire
US6940838B1 (en) 1999-08-19 2005-09-06 Invertix Corporation Wireless telephone network optimization
US7065383B1 (en) 2002-04-16 2006-06-20 Omri Hovers Method and apparatus for synchronizing a smart antenna apparatus with a base station transceiver
US7289826B1 (en) 2002-04-16 2007-10-30 Faulkner Interstices, Llc Method and apparatus for beam selection in a smart antenna system
US7346365B1 (en) 2002-04-16 2008-03-18 Faulkner Interstices Llc Smart antenna system and method
US7349721B2 (en) 2002-04-16 2008-03-25 Faulkner Interstices, Llc System and apparatus for collecting information for use in a smart antenna system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0431956A2 (fr) * 1989-12-07 1991-06-12 Motorola, Inc. Système de diagnostic pour radiotéléphone cellulaire
WO1992005672A1 (fr) * 1990-09-13 1992-04-02 Televerket Procede de localisation pour systeme de radiotelephones mobiles
US5151704A (en) * 1989-09-29 1992-09-29 Televerket Method for simulating the effect of alternative antenna patterns on the coverage and interference pattern of a mobile radio system
EP0631453A2 (fr) * 1993-06-21 1994-12-28 Telia Ab Procédé de localisation de stations mobiles dans un réseau téléphonique numérique
US5390338A (en) * 1990-10-05 1995-02-14 Telefonaktiebolaget L M Ericsson Method of controlling output power in a mobile radio communication system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5151704A (en) * 1989-09-29 1992-09-29 Televerket Method for simulating the effect of alternative antenna patterns on the coverage and interference pattern of a mobile radio system
EP0431956A2 (fr) * 1989-12-07 1991-06-12 Motorola, Inc. Système de diagnostic pour radiotéléphone cellulaire
WO1992005672A1 (fr) * 1990-09-13 1992-04-02 Televerket Procede de localisation pour systeme de radiotelephones mobiles
US5390338A (en) * 1990-10-05 1995-02-14 Telefonaktiebolaget L M Ericsson Method of controlling output power in a mobile radio communication system
EP0631453A2 (fr) * 1993-06-21 1994-12-28 Telia Ab Procédé de localisation de stations mobiles dans un réseau téléphonique numérique

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000077532A1 (fr) * 1999-06-14 2000-12-21 Telia Ab Procedure et systeme dans un systeme de telecommunications hertziennes
WO2001013526A2 (fr) * 1999-08-19 2001-02-22 Invertix Corporation Optimisation d'un reseau radiotelephonique
WO2001013526A3 (fr) * 1999-08-19 2001-06-07 Invertix Corp Optimisation d'un reseau radiotelephonique
US6940838B1 (en) 1999-08-19 2005-09-06 Invertix Corporation Wireless telephone network optimization
WO2002033997A2 (fr) * 2000-10-16 2002-04-25 Wireless Online, Inc. Procede et systeme de calibrage de pylones d'antennes pour diminuer l'interference cellulaire
WO2002033997A3 (fr) * 2000-10-16 2002-07-18 Wireless Online Inc Procede et systeme de calibrage de pylones d'antennes pour diminuer l'interference cellulaire
US7346365B1 (en) 2002-04-16 2008-03-18 Faulkner Interstices Llc Smart antenna system and method
US7289826B1 (en) 2002-04-16 2007-10-30 Faulkner Interstices, Llc Method and apparatus for beam selection in a smart antenna system
US7065383B1 (en) 2002-04-16 2006-06-20 Omri Hovers Method and apparatus for synchronizing a smart antenna apparatus with a base station transceiver
US7349721B2 (en) 2002-04-16 2008-03-25 Faulkner Interstices, Llc System and apparatus for collecting information for use in a smart antenna system
US7395094B2 (en) 2002-04-16 2008-07-01 Faulkner Interstices, Llc Method and apparatus for synchronizing a smart antenna apparatus with a base station transceiver
US7418271B2 (en) 2002-04-16 2008-08-26 Faulkner Interstices Llc Smart antenna apparatus
US7444157B2 (en) 2002-04-16 2008-10-28 Faulkner Interstices Llc Method and apparatus for beam selection in a smart antenna system
US7463906B2 (en) 2002-04-16 2008-12-09 Faulkner Interstices Llc Method and apparatus for collecting information for use in a smart antenna system
US7529525B1 (en) 2002-04-16 2009-05-05 Faulkner Interstices Llc Method and apparatus for collecting information for use in a smart antenna system
US7565174B2 (en) 2002-04-16 2009-07-21 Omri Hovers Method and apparatus for monitoring and extracting information for use in a smart antenna system

Also Published As

Publication number Publication date
SE9600502L (sv) 1997-08-13
SE9600502D0 (sv) 1996-02-12

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