AN EFFICIENT APPROACH FOR DYNAMIC LOCATION MANAGEMENT IN WIRELESS NETWORKS

Abstract

Every aspect of the life has been touched by the recent advances in cellular mobile. In mobile computing, terminals (MTs) move indiscriminately from one place to another within a geographical area which is often well-defined. A challenging task is to track the location of the mobile effectively to provide timely services to mobile users, so that the connection establishment delay is low. Conventionally, the network uses paging to determine the exact location of the mobile and this takes anywhere between 500ms to several seconds. The cost factors for location update and paging are often mutually contradictory. Numerous location update reduces location uncertainty about the mobile terminal, which in fact saves the expenses of paging delays and paging channel resources. However, it imposes a elevated power utilization in the mobile terminal and requires provisions of more control channel resources. On the other hand, less frequent location update reduces power consumption in a mobile terminal and requires less control channel resources; it nevertheless increases location uncertainty, which requires either larger paging delays or more paging channel resources for locating a called mobile terminal. This is a basic trade off in tracking mobile users . In this thesis, we productively establish a new logical model accessible for the study of the significant dynamic movement-based location management mechanism for wireless networks with HLR-VLR architectures with intelligent paging, to determine the total cost which is comprised of location update cost and paging cost. Analytical results show that proposed incorporated new scheme, it does decrease the whole cost for location management compared to the earlier scheme, and obtain the improved performance and thus reducing the call setup time.