Seoung-Bum Lee

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We present the design, implementation, and evaluation of INSIGNIA, an IP-based quality of service framework that supports adaptive services in mobile ad hoc networks. The framework is based on an in-band signaling and soft-state resource management approach that is well suited to supporting mobility and end-to-end quality of service in highly dynamic(More)
Delivering sufficient fidelity to sensor network applications is challenging because unpredictable wireless links, network dynamics, and the presence of transitional regions in sensor networks impact the delivery of packets (i.e., fidelity) to the sink. One of the major reasons for this problem is due to the non-responsive nature of forwarding mechanisms(More)
"Hotspots" represent transient but highly congested regions in wireless ad hoc networks that result in increased packet loss, end-to-end delay, and out-of-order packets delivery. We present a simple, effective, and scalable Hotspot Mitigation Protocol (HMP) where mobile nodes independently monitor local buffer occupancy, packet loss, and MAC contention and(More)
Hotspots represent transient but highly congested regions in wireless ad hoc networks that result in increased packet loss, end-to-end delay, and out-of-order packets delivery. We present a simple, effective, and scalable hotspot mitigation protocol (HMP) where mobile nodes independently monitor local buffer occupancy, packet loss, and MAC contention and(More)
We present an evaluation of the INSIGNIA signaling system that supports quality of service in mobile ad hoc networks. INSIGNIA is based on an in-band signaling and soft-state resource management paradigm that is well suited to supporting mobility with end-to-end quality of service in highly dynamic environments where the network topology, node connectivity(More)
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