Distributed Power-Management Techniques for Wireless Network Video Systems

Abstract

Wireless sensor networks operating on limited energy resources need to be power efficient to extend the system lifetime. This is especially challenging for video sensor networks due to the large volumes of data they need to process in short periods of time. Towards this end, this paper proposes two coordinated power management policies for video sensor networks. These policies are scalable as the system grows and flexible to video parameters and network characteristics. In addition to simulation results, our prototype demonstrates the feasibility of implementing these policies. Finally, the analytical framework we provide gives an upper bound for the achievable sleep fraction and insight into how adjusting select parameters will affect the performance of the power management policies.

Power management adaptation techniques for video transmission over TFRC

“…Kim and Kim [21] propose a power management scheme for intra-frame-refreshed image sequences of the wireless video service in code division multiple-access (CDMA) systems, while Zamora et al [22] introduces coordinated power management policies for video sensor networks. In Li et al [23], transmission power is one of the parameters that were jointly optimized in order to minimize power consumption.…”

A Test Bench for Distortion-Energy Optimization of a DSP-Based H.264/SVC Decoder

“…Moreover, because no step change in energy densities of lithium-based batteries is predicted in the near future [2], storage technology improvements alone will achieve no significant increase in terminal operational time. System-level solutions to maximize operational time have already been proposed in the literature [3,4,5,6]. However, despite the fact that degradations of perceived multimedia quality prevent technology user adoption [7], this performance parameter has usually been discarded as an optimization goal.…”

A review on stochastic approach for dynamic power management in wireless sensor networks

“…The timeout scheme shuts down a power manageable component after a fixed inactive time (T). Time out policy outperforms only when the idling duration is very large, but it costs for waiting period dissipation [15]. Predictive scheme is another type of heuristic scheme.…”