Location management and paging using mobility pattern

This paper introduces a new location management and paging strategy for effective utilization of available bandwidth in the GSM. In mobile environment, both paging and location update consumes precious system resources like wireless bandwidth and processing power (both at mobile terminal and at base station). Due to bandwidth restriction, the number of available channels is fixed and limited. If an exhaustive search were performed for each and every call that arrives, the signaling traffic would be enormous even for moderately large network. This is bound to overload the paging channels rapidly as the call volume grows. Hence the network must know the location within a limited area in order to successfully deliver incoming calls within a fixed delay constraint. On the other hand, if for each cell crossing there is an update message, the signaling traffic due to updating alone may contribute to an appreciable fraction of total traffic. Thus updating of location will become a major bottleneck in the network. On the contrary, saving location update cost will increase the search cost and the latency in network. This paper presents an efficient algorithm, which optimizes the number of location updates as well as the cost of terminal paging.