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Overlay routing is an application-level routing mechanism and existing research has revealed that overlay routing can improve user-perceived performance. On the other hand, overlay routing may harm the ISPs' cost structure because of the policy mismatch between IP routing and overlay routing. In a previous study, we proposed a method to reduce inter-ISP transit cost caused by overlay routing while...
We have proposed a novel Call Admission Control (CAC) to maximize total user satisfaction in a heterogeneous traffic network and showed the effectiveness of our CAC by using optimal-threshold from numerical analysis. In our previous CAC, when a new broadband flow arrived and if total accommodated bandwidth was more than or equal to the threshold, the arriving new broadband flow was rejected. In actual...
In this paper, we propose a proactive recovery method against multiple network failures for large-scale packet switching networks. The proposed method exploits the overlay networking technique. Specifically, it constructs multiple logical network topologies from the original overlay network topology by assuming various failure patterns. When a failure is detected, our method selects one topology....
Fractional Power Control (FPC) has recently been standardized for the uplink in the Long Term Evolution of UMTS mobile radio networks (LTE). The behavior of FPC is mainly governed by two cell specific parameters, the path loss compensation factor and the power offset. Radio network operators face the problem to plan these parameters for LTE network deployments. In this work we establish a system of...
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