Mobile users and applications are putting pressure on wireless network operators to
improve the seamless handover of devices and services. Strong business competition for …

In this paper we present a novel framework for ns2 to facilitate the simulation and, in
general, the design of beyond 3G networks. The set of libraries we wrote for this purpose is …

In this article, we bring forward the important aspect of energy savings in wireless access
networks. We specifically focus on the energy saving opportunities in the recently evolving …

To support the heterogeneous demands for the network and mobile user equipment (UE),
multiple radio access technologies (RATs), operating with different system configurations …

In mobile telecommunication networks the trend for an increasing heterogeneity of access
networks, the convergence with fixed networks as well as with the Internet are apparent. The …

Communication systems beyond 3G (B3G) will consist of a mixture of radio access
technologies. For such systems the challenge is to provide a multi-radio access architecture …

Heterogeneous wireless access networks are today considered to be a key enabler for
affordable wireless access to the internet. Thanks to the diverse usage patterns and quality …

The inefficiency of one-to-one matching of user requirements to a single service has given
rise to service composition. Service composition allows simple services to be dynamically …

Vertical handover decision making is one of the key problems in heterogeneous networks
environment. In IEEE 802.21 standard, a Media Independent Handover (MIH) framework is …

The Internet architecture is based on design principles such as end-to-end addressing and
global routeability. It suits relatively static, well-managed and flat network hierarchies …