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— In interference-limited wireless cellular systems, interference avoidance and interference averaging are widely adopted to combat co-channel interference. In different types of wireless networks, these two basic frequency planning methods are implemented under variable system deployment strategies. With respect to the IEEE 802.16 OFDMA network,(More)
Traditional admission control algorithms are based on bandwidth or channel reservation policy, which may be incompetent in IEEE 802.16e OFDMA systems for two reasons: (1) WiMAX system supports dynamic and flexible resource allocation, and (2) there exists a fundamental tradeoff between bandwidth resource and power resource. In this paper, we propose a novel(More)
Efficient network selection and call admission control (CAC) strategies are the key components of the next generation heterogeneous wireless networks (HWN). In this paper, we propose a distributed uplink call admission control and network selection scheme for hybrid CDMA-OFDMA networks, which aims to efficiently utilize the overall radio resource of the(More)
The crucial contribution of the paper is the novel saturated throughput analysis of the IEEE 802.11 Distributed Coordination Function (DCF) in the presence of hidden stations. This approach involves a novel analytical model that is an extension to previous works by other authors which provide Markov chain analysis to IEEE 802.11 DCF. Hidden stations cause(More)
In large-scale wireless sensor networks (WSNs), in order to enhance network security, it is crucial for a trustor node to perform social milieu oriented routing to a target a trustee node to carry out trust evaluation. This challenging social milieu oriented routing with more than one end-to-end Quality of Trust (QoT) constraint has proved to be(More)