A mobile ad hoc network (or manet) is a group of mobile, wireless nodes which co-operatively form a network independent of any fixed infrastructure or centralised administration. In particular, a manet has no base stations: a node communicates directly with nodes within wireless range and indirectly with all other nodes using a dynamically computed, multi-hop route via the other nodes of the manet. Simulation and experimental results are combined to show that energy and bandwidth are substantially different metrics and that resource utilisation in manet routing protocols is not fully addressed by bandwidth-centric analysis. This report presents a model for evaluating the energy consumption behaviour of a mobile ad hoc network. The model was used to examine the energy consumption of two well-known manet routing protocols. Energy-aware performance analysis is shown to provide new insights into costly protocol behaviours and suggests opportunities for improvement at the protocol and link layers.

Popular media events of today are likely to attract a big, live audience. Being part of a huge cricket audience, for example, knowing that the event is broadcast to perhaps millions of people, is a truly arousing experience. But the size of the audience and the complexity of events do not come without drawbacks. Spectators find it difficult to be at the right spot at the right time and to grasp the essentials of the on goings. We introduce a Media Event Platform, which combines various sources of event crucial information and lets the mobile user choose from a number of different channels; WAP-phones, web browsers, digital radio, and SMS. This paper adds to the existing body of research by offering a novel multi channel system design for boosting event experiences and provides an early example of how mobile technology influences converging media forms. Further, we report from a user evaluation conducted in order to find implications for design improvements, and describe possible commercial potential.