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Binary-exponential sleep mode (BE-SM) operation is an energy-saving solution of mobile stations for best-effort or non-realtime services. In general, there is a trade-off between energy consumption and delay. Especially, in the conventional BE-SM operations, the standard scheme achieves the lower bound of delay, while the threshold scheme achieves the upper bound of delay. Since the threshold scheme...
This paper proposes a Markov decision process (MDP) based base station management scheme that dynamically and collectively manages activation of a group of base stations depending on the time-varying traffic demand for power conservation in self-organization networks. Our MDP model is unique in a sense that it accurately captures the dynamics of handover traffic among neighboring cells, and it formulates...
In order to alleviate a mobile data explosion problem, WiFi offloading has been proposed. The key issue is how many access points (APs) are needed to accommodate a proper number of users per WiFi AP without severe performance degradation. Although WiFi networks can provide higher throughput as more and more APs are deployed, it may not be a reasonable solution if we consider an increase in the corresponding...
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