Opportunistic networks are human-centric mobile ad-hoc networks, in which neither the topology nor the participating nodes are known a priori. Routing is dynamically planned following store-and-forward paradigm, which takes advantage of people mobility. This widens the range of communication and supports non end-to-end data delivery. But due to individuals mobility, OppNets are characterized by frequent communication disruptions and uncertain data delivery.
These networks are mostly used for exchanging small messages like disaster alarms or traffic notifications. Other scenarios which require the exchange of larger data are still challenging due to the characteristics of this kind of networks. Video transmission is one example of such applications, where the probability of successful delivery is inversely proportional to data size. The thesis is focused on this problem, with the objective of increasing the availability as well as the efficiency of video transmission in the challenging environment of opportunistic networks.