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Available radio resources in a wireless communication network are normally shared among multiple users. The state during which the number of users admitted into a network exceeds the capacity of the network is known as network congestion. Network congestion causes degradation of Quality of Service (QoS) and Grade of Service (GoS), which results in users' dissatisfaction. Thus, it is of uttermost importance...
Traditional approaches towards self-healing of services, have emphasized reactive self-healing; viz., stopping a failed service, replacing/reconfiguring it and restarting. Since this is disruptive, we investigate a proactive self-healing approach in this paper. The key issue in proactive self-healing, is the decision by the consumer, based on available observations of the performance of the provider...
In this paper, we address the problem of joint packet scheduling at the application layer as well as power and rate allocation at the physical layer for delay-sensitive video streaming over slow-varying flat-fading wireless channels. Our goal is to find the optimal cross-layer policy that maximizes the cumulative received video quality, while minimizing the total transmission energy. We first formulate...
Limited battery power at wireless video sensor nodes, along with the transmission quality requirements for video data, makes quality-of-service (QoS) provisioning in a wireless video sensor network a very challenging task. In this paper, a dynamic power-management framework is proposed for a wireless video sensor node to improve the energy-saving performance while satisfying video transmission quality...
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