Reducing signaling cost of location management in cellular network using fuzzy logic controller

The aim of mobility management is to track the location of user equipment (UE). Many location management methods have been proposed and they could be classified into several categories: the distance based method, time based method, and movement based method. These methods only consider the mobility of UEs. When the telephonic traffic increases, the performance of these methods may decrease significantly. In this paper, we propose an efficient scheme which treats user´s telephonic traffic as an essential factor to allocate a proper tracking area (TA) code for a specific UE. Using parameter estimation to estimate telephonic traffic and fuzzy logic controller decide size of tracking area. With these methods we can find a TA allocation strategy to minimize the signaling cost of paging and TAU (Tracking Area Update).