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US5151704A
Expired / Lapsed
US
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Method for simulating the effect of alternative antenna patterns on the coverage and interference pattern of a mobile radio system
Assignee: Televerket
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Filing: 1992-01-16
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Granted: 1992-09-29
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Expires: 2012-01-16
Abstract
Abstract The present invention provides a method for simulating the effect of alternative antenna patterns on the coverage and interference pattern of a mobile radio system. The method is mainly characterized by the fact that signal strength values of an existing antenna are measured for relevant coordinates, the ideal difference in antenna gain is formed by "reducing" the ideal radiation pattern of the antenna which is to be simulated with the ideal radiation pattern of the existing antenna, and the measured field strength values are "weighted" with the ideal antenna gain difference to form a set of simulated field strength values.
Inventors
- 👤 Krister Gunmar
- 👤 Ulf Tegth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:47
CPC Classifications
H; H04; H04W; H04W16/00; H04W16/18; G; G01; G01R; G01R29/00; G01R29/08; G01R29/10; H04B; H04B17/00; H04B17/30; H04B17/391; H04W16/24
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
123 words
A method for simulating the effect of alternative antenna patterns on the coverage and interference pattern in cellular radio systems, comprising a number of base stations with associated individual coverage areas and mobile stations, characterized in that signal strength values of an existing multi-directional antenna are measured for a plurality of relevant coordinates along a plurality of radials and at a plurality of distances from said existing antenna, an ideal difference in antenna gain is formed by mathematically comprising an ideal radiation pattern of the antenna which is to be simulated with the ideal radiation pattern of the existing antenna, and the measured field strength values are "weighted" with the ideal antenna gain difference to form a set of simulated field strength values.
Claim 2
Independent Claim
123 words
A method for simulating the effect of alternative antenna patterns on the coverage and interference pattern in cellular radio systems, comprising a number of base stations with associated individual coverage areas and mobile stations, characterized in that signal strength values of an existing multi-directional antenna are measured for a plurality of relevant coordinates along a plurality of radials and at a plurality of distances from said existing antenna, an ideal difference in antenna gain is formed by mathematically comprising an ideal radiation pattern of the antenna which is to be simulated with the ideal radiation pattern of the existing antenna, and the measured field strength values are "weighted" with the ideal antenna gain difference to form a set of simulated field strength values.
Claim 3
Dependent Claim
38 words
A method according to claim 1, characterized in that a graph is produced by inserting the simulated field strength values instead of the measured field strength values in a plotting program for producing a coverage and interference pattern.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |