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Coverage Extension and savings in
cellular infrastructure
a Solution with the VEGA antenna
In Miramar – Cordoba, Argentina

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Case: Miramar – Argentina (GSM 900)
RBS Miramar-CO043
The BTS CO043 nearby
Miramar approximately
3.8 Km distant

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Former Situation
CO043-Sector 1
Problems:
Low coverage in Miramar (Cordoba)
Argentina, that does not guarantee
indoor service (see upper plot)
There is no leading signal. There exist
3 – 4 dominant signals. ( see lower plot)
The nearest BTS is CO 043 located
about
4 Kms. from Miramar.
The sector (CO 043 – 1)antenna aimed
at the Community has the following
Configuration;
Antenna DB858DG65ESX
Azimuth 20° tilt 1° height aprox. 90 m.

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Coverage Improvement Alternatives
Change of Antennas from
Enlarging Cellular infrastructure
(2 – 3 sectors) $$$$
Signal Amplifiers, Repeaters $$$
Implementation of special features,
(smart radio concept, antenna hoping,
Intelligent downlink diversity) $$
Use of very high gain narrow beam
dual polarization antennas $
To

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The VEGA Antenna Solution
Advantages – The VEGA antenna has
more than 5 dB gain and
More than double the power over the
existing panel antenna.
Risk – The narrow horizontal beam of
the VEGA is able to reduce
Lateral coverage
The Best Solution – the two panel
antennas DB858DG65ESX with
Two VEGA CC-12 antennas (see photo)

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Los mejores servidores por rango:
Frec. 242: 94.15% de muestras
Frec. 241: 3.38% de muestras
Frec. 224: 1.85% de muestras
Los mejores servidores por rango:
Frec. 242: 48.7% de muestras
Frec. 219: 35.2% de muestras of
samples
Frec. 218: 6.03% de muestras
Plots of Best Server by Sector
afterbefore

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Mejoras en niveles superiores a 15
dB. Nuevos niveles garantizan un
servicio indoor You improve in levels
over 15 dB. New levels guarantee a
service indoor
Los niveles era inferiores a – 93 dBm
con lo cual no se garantizaba
cobertura indoor The levels was lower
to – 93 dBm with which not cover was
guaranteed indoor
Plots de Best Server por Fuerza de señal
todos los sitios Plots of Best Server by force of the places
afterbefore

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The propagation of the VEGA antenna
has had a notable improvement as is
observed in the coverage distribution
ranks.
Plots de Propagación Frec. 242
afterbefore
% de Muestras de Propagación Frec. 242
Rangos de Nivel de Señal en dBm
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
70.00%
>71
71-83
83-93
93-104
Rangos
Después Ant es

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Conclusions & Recommendations
• La antena VEGA mejoró notablemente la cobertura y el servicio del sector 1 de CO043.
• The VEGA antenna improved notably the coverage and the service of the sector 1 of CO043
• Se debe verificar que el aumento de tráfico no exceda el dimensionamiento actual de
Radios del sector.
• It should be verified that the increase of traffic exceed not the dimensionamiento present of Radios of the sector.
• Si esto sucede sería recomendable aumentar un sector adicional en el sitio para distribuir
el tráfico con el sector de servicio actual.
• If this happens it would be recommendable to enlarge an additional sector in the place to distribute the traffic with the
sector of present service.
• Este nuevo sector debe disponer de un traslape suficiente con el sector actual de servicio
para poder utilizar features como el Directed Retry para equilibrar la carga.
• This new sector should have enough overlay with the current sector in order to use features such as
directed retry. This feature will contribute to balance the traffic load

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