Identification of the location of the Mobile Terminal (MT) in a cellular network is the main objective of the location management algorithm. In cellular network, when a call arrives to a user in order to route the call appropriately, it is necessary to trace the mobile user correctly and efficiently (Bar-Noy et al., 1994). There are two fundamental operations in locating a mobile terminal in cellular mobile networks, i.e., location tracking (paging) and location update (registration). In ‘Paging’ technique, when a call arrives, the network sends a signal to investigate the subscriber, but in ‘Location Update’ technique, the subscriber sends the signal to inform the network (Rose and Yates, 1995). When a subscriber moves to a new location area, basically location update occurs. When there is an incoming call for a mobile terminal, paging process occurs which is initiated by a mobile terminal. When location updates are frequent, a tradeoff exists between the frequency of location update and paging costs; fewer number of calls need to be paged as there is less uncertainty about the user’s position. On the other hand, the cost of paging increases when location updates are infrequent (Akyildiz and Ho, 1995).
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