Younggoo Kwon

TL;DR: It is demonstrated that the exponential distribution is a good approximation model for the MAC layer service time for the queueing analysis, and the presented queueing models can accurately match the simulation data obtained from ns-2 when the arrival process at MAC layer is Poissonian.

TL;DR: The extensive simulation studies show that the FCR algorithm could significantly improve the performance of the IEEE 802.11 MAC protocol if the efficient collision resolution algorithm is used and that the fairly scheduled FCR (FS-FCR) algorithm could simultaneously achieve high throughput performance and a high degree of fairness.

TL;DR: This paper proposes an efficient contention resolution algorithm for wireless local area networks, namely, the fast collision resolution (FCR) algorithm and incorporates the self-clocked fair queueing algorithm and a priority scheme into the FCR algorithm, and shows that RT-FCR can simultaneously achieve high throughput and good fairness performance for nonreal-time traffic while maintaining satisfactory QoS support for real- time traffic.

TL;DR: A rate-adaptive protocol with dynamic fragmentation is proposed to enhance the throughput based on fragment transmission bursts and channel information by using multiple thresholds for different data rates so more data can be transmitted at higher data rates when the channel is good.

TL;DR: This paper proposes a novel anonymous and certificateless public-key infrastructure (AC-PKI) for ad hoc networks, and determines the optimal secret-sharing parameters to achieve the maximum security.