cdmahn
2009-06-14, 08:39 PM
Hi,
I've used Actix Spotlight to drilldown the Call Setup Failure and the it appereared as the attached image.
There are some points that I cannot understand, especially which related to the neighbor cell detection mechanism that the mobile use in the measurement report. I also made notes from 1 to 4 in the image.
Please help me to explain as follow:
1. See Note 1 and 3. Why did MS detect them to be 2 sectors with the same BCCH, BSIC (very bad case in design)? Why can't it detect these 2 signals to be 2 versions of the same sector near its position due to fading/propagation? You see in Note 4 that the distance from MS to sector 3 of the near site (Pham-Hung) is much lower than to the Thinh-Hao site.
2. See Note 2. What is incorrect, my local cell database (made by myself) or the neighbor list (from system database)?
Thank you in advanced
I've used Actix Spotlight to drilldown the Call Setup Failure and the it appereared as the attached image.
There are some points that I cannot understand, especially which related to the neighbor cell detection mechanism that the mobile use in the measurement report. I also made notes from 1 to 4 in the image.
Please help me to explain as follow:
1. See Note 1 and 3. Why did MS detect them to be 2 sectors with the same BCCH, BSIC (very bad case in design)? Why can't it detect these 2 signals to be 2 versions of the same sector near its position due to fading/propagation? You see in Note 4 that the distance from MS to sector 3 of the near site (Pham-Hung) is much lower than to the Thinh-Hao site.
2. See Note 2. What is incorrect, my local cell database (made by myself) or the neighbor list (from system database)?
Thank you in advanced