In this paper, we define a new “location area” for location management in wireless networks. Location management schemes comprise of location update and terminal paging. Efforts to introduce efficient location update schemes results in increased paging costs and vice-versa. Dynamic Location Area (LA) schemes, which are per-user and mobility pattern based were proposed to overcome the problems o...

Given a set of hidden variables with an a-priori Markov structure, we derive an online algorithm which approximately updates the posterior as pairwise measurements between the hidden variables become available. The update is performed using Assumed Density Filtering: to incorporate each pairwise measurement, we compute the optimal Markov structure which represents the true posterior and use it ...

LOCATION UPDATE STRATEGIES IN MOBILE COMPUTING

Object tracking is an important part of the common problem for the autonomous motion planning. The main theme of this paper is to propose a data aggregation model for object tracking. Object tracking typically involves two basic operations: update and query. In general, updates of an object’s location are initiated when object moves from one point to another. A query in invoked each time when t...

Global wireless networks enable mobile users to communicate regardless of their locations. One of the most important issues is location management in a highly dynamic environment because mobile users may roam between different wireless systems, network operators, and geographical regions. In this paper, a location-tracking mechanism is introduced that consists of intersystem location updates an...

Location-based routing protocols are stateless since they rely on position information in forwarding decisions. However, their efficiency depends on performance of location services which provide the position information of the desired destination node. Although several location service schemes have been proposed, their main goal is merely to find the location of the destination node. Seldom th...

A MANET is a self configuring infrastructure less networks. It is usually connected by wireless. Each device in a MANET is independently to move in any direction. To maintain neighbor position the geographic location coordinates of the node is a famous method used by most geographic routing protocol for the purpose of periodic broadcasting of beacon packets. If the location information is not a...

In this paper, we have proposed a location update scheme by applying swap technique and enhanced GTT in STP. This scheme achieves significant improvement in signalling costs compared to other location update schemes. This paper presents the details of this scheme and provides comparison results with other location database management schemes. The performance results clearly indicate that our pr...

One of the most important issues in location-based services is tracking moving objects efficiently. To achieve this goal, an efficient protocol which updates location information in a location server is primarily needed. In fact, the performance of a location update strategy highly depends on the assumed mobility pattern. In most existing studies, however, the mobility issue has been disregarde...