Enhancing BitTorrent for efficient interactive video-on-demand streaming over MANETs

Providing interactive video-on-demand streaming over mobile ad hoc networks is still a challenge. Mobile nodes are dynamically and arbitrarily located in such a manner that interconnections between them change on a continual basis, thereby making timely video-delivery strenuous to achieve. To help to tackle this adversity, this paper proposes two BitTorrent-like algorithms. Their design concept lies in the combination of different criteria to wisely (i) select the nodes which may request video file pieces from another node, and (ii) delimit the video file pieces to be requested with the highest priority. Performance evaluation is carried out by means of simulations, which assess different metrics on scenarios encompassing two client-mobility models and two client-interactivity profiles. The final results highlight the efficiency of our proposals compared to other recent literature works. General conclusions and avenues for further research are included at the end of this paper.