Yanxia Rong

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— As the commercial success of the IEEE 802.11 protocol has made wireless infrastructure widely deployed, user organizations are increasingly concerned about the new vulner-abilities to their networks. While various security issues have been extensively studied, the threats posed by denial-of-service (DoS) attacks have not been fully exploited. In this(More)
As the energy consumption in wireless sensor nodes is dominated by the radio transmission circuitry, the network configuration must be designed to minimize the power consumption by transmission radios. Sensor nodes are generally equipped with short-range radios that require low power consumption. But the current technology allows each node to adjust its(More)
Ad hoc networks employ a decentralized unstructured networking model that relies on node cooperation for key network functionalities such as routing and medium access. In this paper, we develop a model based on the Sequential Probability Ratio Test to characterize how nodes can differentiate between routes that include misbehaving nodes (infected routes)(More)
—User-generated content (UGC) also known as user-created content (UCC) refers to various kinds of media contents that are produced by end users. A recent trend in the use of the Internet exhibits that data traffic from UGC is rapidly growing with the potential to create a huge amount of uplink traffic for wireless operators. As the reality of UGC's scope(More)
—We develop a rate adaptation scheme for 802.11 networks termed SRC that is based on a novel combination of sequential hypothesis testing and short-term loss ratios. The underlying design of SRC represents a fundamental departure from previous rate adjustment strategies that employ fixed-size observation windows and seemingly-intuitive rate increase(More)
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