Game-theoretic network bandwidth distribution for self-adaptive cameras

Abstract

Devices sharing a network compete for bandwidth, being able to transmit only a limited amount of data. is is for example the case with a network of cameras, that should record and transmit video streams to a monitor node for video surveillance. Adaptive cameras can reduce the quality of their video, thereby increasing the frame compression, to limit network congestion. In this paper, we exploit our experience with computing capacity allocation to design and implement a network bandwidth allocation strategy based on game theory, that accommodates multiple adaptive streams with convergence guarantees. We conduct some experiments with our implementation and discuss the results, together with some conclusions and future challenges.

Control-based event-driven bandwidth allocation scheme for video-surveillance systems

“…The network manager allocates bandwidth to the cameras periodically with game-theoretic bandwidth allocation. Figure 7 shows the comparison between two adaptation schemes, one from [10] and the adaptive PI controller from previous work [20]. Only camera 1 is Figure 7 Results with Equal Distribution, and adaptation with [10] (left plots) and PI controller (right plots) [20] present initially up to time 40 s, then camera 2 joins the network.…”

“…Previous work [20] describes the results for camera adaptation with timetriggered manager. Similarly [8], investigated the implementation of a eventtriggered manager.…”

“…• The camera, that adapts its quality to fit the frame to the allocated bandwidth [20] described the camera adaptation using control theory and also showed the advantage of co-operation between the network manager and the cameras work to ensure optimal network utilisation [8]. Improves on the work by showing a need for triggering the manager only when required and the non-trivial decision involving the optimal selection of the triggering threshold, τ thr .…”

“…Figure 7. : Results with Equal Distribution, and adaptation with [10] (left plots) and PI controller (right plots) [20] In this experiment, the manager allocates an equal amount of bandwidth to the two cameras in the network to evaluate camera adaptation. The network manager allocates bandwidth to the cameras periodically with game-theoretic bandwidth allocation.…”