I’m going to reply to you with even more questions 🙂
cells of same LAC … and same BSC ?
if different BSC, it has to do with paging retries performed in the MSC : first Paging Request is performed in the LAC only, then second retry can be on all BSC’s using this LAC, or on all cells, etc.
Therefore,it could lead to different Paging Requests per cell, within same LAC and different BSCs.
But you’re talking about PAGING LOAD.. well, are you sure all your cells have the same Paging capacity in the first place ? Non combined BCCH ? How many CCCH blocks allocated for PCH ?