What is the accurate way of setting the RxLevAccessMin parameter

What is the accurate way of setting the RxLevAccessMin parameter, polarized diversity, multipath loss, rxlevaccessmin, interference, multipath.

RxLevAccessMin Parameter is decide to allow mobile to access Network.its also used to reduce access on any BTS.

RxLevAccessMin = Mobile Sensitivity + Body loss + Multipath loss + Interference Margin

Mobile Sensitivity = -104 for GSM900 and -102 for DCS1800

Body loss :

= 3 dB recommended by ETSI and 5 dB for GSM 900 by Various Vendor

= 3 dB recommended by ETSI and 3 dB for DCS 1800 by Various Vendor

Multipath loss = Signal loss from base station due to reflection by buildings, etc before reaching mobile.

Normally the Multipath loss is around 3 dB but can be overcome by Antenna Diversity which has gain around 3 dB too.

(Space diversity = 3 dB, 90 degrees polarized diversity = 3 dB, 45 degrees slant polarized diversity = 4.5 dB)

Interference Margin = Margin allocated to overcome C/I and C/N, the recommended value is 2 dB

RxLevAccessMin = Mobile Sensitivity + Body loss + Multipath loss + Interference Margin

RxLevAccessMin = -104 + 3 + 0 + 2 (for GSM 900 with ETSI standard)

= – 99 dBm

RxLevAccessMin = -104 + 3 + 0 + 2 (for DCS 1800)

= – 99 dBm

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Article Topics :

rxlevaccessmin, mobile, multipath, margin, diversity, sensitivity, interference, gsm, etsi, dcs gsm, gsm rf optimization, gsm rf planning