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Dynamic switching between multiple radio interfaces has been shown to reduce power consumption and increase battery lifetime in mobile devices. In this paper, we first present empirical data measured on Sony UMPC and iPhone in a personal area network (PAN) environment to emphasize the need for dynamic multi-radio switching. We then present a collaborative power management architecture and design protocols...
In a wireless sensor network (WSN), nodes are power constrained. As a consequence, protocols must be energy efficient to prolong the network lifetime while keeping some quality-of-service (QoS) requirements. In WSNs, most protocols resort to the broadcast of control messages like, for example, for the topology control (TC) of the network. On their turn, TC itself can be applied to improve the broadcast...
Ethernet is one of the potential candidates capable of meeting the bandwidth demands of subscribers and successfully supporting various services in broadband access networks. However, the lack of a traffic management capability is a major obstacle to successful deployment. In this article we suggest an Ethernet switch architecture that offers performance-guaranteed broadband access services. We also...
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