It has been widely agreed that there will be a co-existence of different radio access technologies in fourth generation communication networks. So there will be a problem of choosing the best access network at a particular time. The selection of the best access network will depend on a number of factors. This work aims to take into account their influence in the selection of the network using a Game theoretical modeling to solve the network selection problem.  The paper introduces the concepts of Strategy Space, Quality Points in the Game theoretical context and gives a mathematical mechanism for network selection. Finally it is shown that only the best network serves the service request of the user.

Location Based Services are becoming an integral part of the wider telecommunication scenario. However, the approaches to provide Location Based Services and the research issues in this area are diverse and broad. In this paper, the present state of the Location Based Service systems has been analyzed. The analysis confirmed the heterogeneity of the research problems associated with Location Based Services as well as the array of solutions to address these problems. On one hand, the study carried out will enable one to get some idea about essential features for the implementation of a Location Based Service system. On the other hand, it is strongly believed that this study will assist researchers and the industry to get a sense of the multidimensional research space of Location Based Services which will be helpful for later exploration of this field

Mobile users are becoming increasingly dependent on location related information. Delivery of accurate and timely location related information depends on estimation of the mobile user's position. Due to the limitation of coverage associated with common positioning systems for mobiles, integration of different types of positioning systems is necessary. Such an integrated solution can only work if it ensures smooth, unobtrusive handover among the positioning systems involved. In this paper, we propose novel algorithms to realize the goal of smooth handover among positioning systems. Our proposed algorithms not only ensure seamless handover among positioning systems, but also makes context awareness, information gathering and user preferences part of the positioning solution.