Proactive Adhoc Nodes for Real-Time Video

Transmission of real-time video over wireless adhoc networks copes with numerous issues due to its bandwidth-greediness and time-sensitiveness, as well as the nature of the networks. This paper introduces a proactive architecture where intermediate nodes do not only simply forward video packets, but are also responsive to the communication. We design a special "cache" at each node to shorten retransmission paths. Each proactive node can analyze semantics and timing information of retained packets to make the most appropriate decisions on forwarding, aiming at minimizing playback distortion and power consumption. Both theoretical analysis and experimental results collected from a real-life testbed demonstrate the feasibility and the outperformance of our proposed framework