PDA

View Full Version : 3g cell selection



radio_network
2010-02-08, 02:45 PM
mobile is not able to access 3g signals from the existing gsm 2g. both are co-located. 2g-******** and 3g-huawei. though mobile netwrok settings at dual mode. mobile detects 3g signal only when the networ->umts. what could be the problem. any solution pl.

gprastomo
2010-02-08, 04:35 PM
mobile is not able to access 3g signals from the existing gsm 2g. both are co-located. 2g-******** and 3g-huawei. though mobile netwrok settings at dual mode. mobile detects 3g signal only when the networ->umts. what could be the problem. any solution pl.

What you have to check is :
1. The neighbour have to be created with correct parameter
2. At least below parameter should be verified :
2.1 Q Search I = true/on for idle mode
2.2 FDD RSCP Min = the value should be logical eg -101 or -95 depend on your design, minimum value for RSCP to be re selected from 2G
2.3 FDD EcNo Min = the value should be logical eg -12 or -10 depend on your design, minimum ecno value to be reselected from 2G
2.4 FDD Q offset, the offset value to compensate the pathloss different between 2G and 3G, the pathloss different is about~-25 dB, so the the setting should be at least -30 or usually we set to minus unlimited

br

atrisfar
2010-02-08, 07:14 PM
je cherche en urgence le sw nemo out door & nemo analyze gratuitement et s'il ya une présentation ca sera un plus voici mon adresse skype atrisfar
merci d'avance