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Research


Dynamic Trust Management for Mobile Networks and Its Applications

Problem: To design and validate a dynamic trust management protocol and trust-based applications in Mobile Networks (MANETs, DTNs, WSNs, and IoT systems) that can provide a subjective yet accurate assessment of trust of mobile nodes in the presence of selfish and malicious nodes

Solutions:

  • Consider social trust derived from social networks in addition to traditional quality-of-service trust derived from communication networks to obtain a composite trust metric.

  • Consider a full spectrum of trust management, namely, trust composition, trust aggregation, trust propagation, trust formation, and trust revocation.

  • Propose a new design concept of application-level trust optimization allowing an application to optimize the use of trust to maximize application performance.

  • Validate dynamic trust management designs by a novel model-based analysis technique with simulation validation.

  • Validate dynamic trust management designs by a static-followed-by-dynamic testing strategy.



    • People: Fenye Bao and Ing-Ray Chen

    Design and Analysis of QoS-Aware Key Management and Intrusion Detection Protocols for Secure Mobile Group Communications in Wireless Networks

    Problem: To support secure, efficient connectivity-oriented group communication systems (GCSs) for mission execution in Mobile Ad Hoc Networks (MANETs) while prolonging the system lifetime.

    Solutions:

  • Design and analysis of QoS-aware key management protocols to deal with outsider attacks and QoS-aware intrusion detection system (IDS) protocols to deal with insider attacks.

  • Development of optimization principles for dynamic adaptive control

  • Development of analysis methodologies to perform tradeoff analysis to identify optimal design settings used for dynamic adaptive control for satisfying performance and security goals.



    • People: Jin-Hee Cho and Ing-Ray Chen

    Design and Analysis of Adaptive Fault Tolerant QoS Control Algorithms for Query Processing in Wireless Sensor Networks

    Problem: To exploit the inherent redundancy in wireless sensor networks (WSNs) and manage redundancy adaptively and dynamically to satisfy application QoS requirements while maximizing network lifetime

    Solutions:

  • Design and validate Adaptive Fault Tolerant Quality of Service Control (AFTQC) to identify optimal "path-level" and "source-level" redundancy dynamically to satisfy QoS requirements and maximize the system lifetime under varying network conditions.

  • Can adapt to wireless sensor network dynamics that cause changes to the node density, residual energy, sensor failure probability, and radio range due to energy consumption, node failures, and changes to node connectivity.



    • People: Anh Phan Speer and Ing-Ray Chen

    Call Admission Control Algorithms for Resource Management and Reward Optimization in Wireless Networks

    Problem: Resource Management is essential to manage limited resources (e.g., channel and bandwidth) in wireless networks. Existing resource management through CAC is for QoS satisfaction without considering reward optimization (for service providers).

    Solution:

  • Design and analysis of CAC algorithms following design principles and techniques identified for both QoS satisfaction and reward optimization.



    • People: Okan Yilmaz and Ing-Ray Chen

    Mobility and Service Management for Future All-IP based Wireless Networks

    Problem: To develop new mobility and service management schemes for future all-IP systems to minimize the overall network cost.

    Solution:

  • Design and analyze proxy-based integrated "mobility" and "service" regional management to minimize the overall cost.



    • People: Weiping He and Ing-Ray Chen