Bongkyo Moon

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In this paper, we focus on resource reservation protocol (RSVP)-based quality-of-service (QoS) provisioning schemes under Internet protocol (IP) micromobility. We consider QoS provisioning mechanisms for on-going RSVP flows during handoff. First, the rerouting of RSVP branch path at a crossover router (CR) at every handoff event can minimize resource(More)
In this article we focus on DiffServ for QoS provisioning in RANs. We first give short explanations of the DiffServ model. We then investigate the problems of DiffServ under IP mobility environments. We also present several DiffServ proposals in IP-based access networks. We finally propose a mobility-aware drop precedence scheme for flows experiencing(More)
In this article we focus on how quality of service) guarantees can be provided for RSVP flows during handoff events in an IP micromobility network. For this purpose, RSVP message delays and signaling overheads should be minimized, and handoff service disruption should also be minimized. By rerouting the RSVP branch path at a crossover router at every(More)
Time Synchronization is the most important component in wireless sensor network (WSN). Since, it improves energy efficiency, lifetime, robustness, precision and so on. The final goal of WSN is Smart Dust. So, WSN devices can't use expensive crystals. Although diversity algorithms were proposed for Time Synchronization, most of the algorithm have(More)