Fairness and QoS guarantees of WiMAX OFDMA scheduling with fuzzy controls
EURASIP Journal on Wireless Communications and Networking - Special issue on fairness in radio resource management for wireless networks
Fuzzy priority scheduler for WiMAX with improved QoS
Proceedings of the International Conference & Workshop on Emerging Trends in Technology
Improving session continuity through user mobility tracking for EPS inter-serving gateway handover
Wireless Communications & Mobile Computing
QoS routing for real time traffic in mobile ad hoc network
Proceedings of the 7th International Conference on Ubiquitous Information Management and Communication
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The integration of different types of wireless access networks, or heterogeneous wireless networks (HWN), is emerging. This article investigates in particular how a combination of UMTS (Universal Mobile Telecommunications System) cellular networks, wireless LAN ad hoc networks, and DVB-H (digital video broadcasting - handheld) broadcasting networks, called UWD networks for short, is constructed and managed to provide users with QoS-aware services. Given the complexity of the UWD networks, a novel policy-based service gateway is proposed. As a software framework sitting over and communicating with the UWD network, this UWD service gateway makes network management decision by reasoning over a set of predefined policies that describe the behaviors of the UWD network. Network variables such as bandwidth, delay, and mobility in policies are fuzzified using fuzzy control theory to make the service gateway (as well as the whole UWD network) more flexible and robust. Both the prototype implementation and the evaluation results indicate the feasibility and effectiveness of the system