Hi Huawei RF,
Thanks for ur reply. Yes the frequency re-use is much looser it is 7×21 but the problem is the sites are very close together and may generate interference so it needs a sharp optimization on all the coverage of all cells to avoid interference.But I am wondering if you still can isolate the TCH from the BCCH why I use this technique?
“remmember that the number of TCHs should be more than 2 times the number of TRXs in a cell to get good frequency hopping gain.” I think 50% Frequency hopping load is not bad but it is recommended not more than 35% for a better quality.
Thanks