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Convergence of different wireless access networks and development towards 4G yields a necessity for more efficient resource management procedures in the integrated heterogeneous platform. The notion of resource is fundamentally different in heterogeneous environments (compared to homogeneous ones) as it is spanned across several different wireless solutions. This paper summarizes the development process...
The concept of wireless heterogeneous networks is based on the coexistence and interoperability of different types of radio access technologies in a unified wireless heterogeneous platform. A key process in the wireless heterogeneous networks is the initiation and execution of vertical handovers. Variety of mechanisms are proposed in the literature that are tailored to optimize the choice of radio...
Mobility in WSNs can impact the overall network performances. The controlled mobility offers the possibility of relocating sensing resources to areas with more intensive activity and/or decreased sensor density. This paper presents a novel algorithm for sensor nodes relocation that achieves longer sensor network lifetime. The algorithm has distributed approach for sensors mobility, obtaining improved...
A wireless heterogeneous network consists of various wireless networks such as Worldwide Interoperability for Microwave Access (WiMAX), Wireless Fidelity (WiFi), cellular networks etc. Vertical handover (VHO) is a procedure that enables continuous seamless communication in these heterogeneous systems. This paper considers the speed as an aspect of motion as input parameters for the handover decision...
Constant development of wireless and mobile networks and their capabilities enlarges the plethora of possible user services. It opens potentials for the operators to increase their service portfolio and for the users to experience context-rich and personalized services. In this manner, the interoperability between different wireless networks and the enabling of seamless vertical handovers (VHOs) become...
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