Learn More
As the commercial success of the IEEE 802.11 protocol has made wireless infrastructure widely deployed, user organizations are increasingly concerned about the new vulnerabilities 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 paper,(More)
Summary form only given. 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(More)
The complementary characteristics of 3G cellular networks (such as UMTS) and IEEE’s 802.11 wireless LANs (WLANs) have stimulated intensive research efforts to integrate UMTS and WLAN networks. In such integrated networks, a mobile station is able to switch between UMTS and WLAN networks based on various network parameters such as network throughput, packet(More)
†Bradley Department of Electrical and Computer Engineering Virginia Tech Alexandria, VA 22314 {mtamer,ldasilva}@vt.edu *Department of Computer Science George Washington University Washington, DC 20052 { yxrong,hchoi}@gwu.edu Abstract Ad hoc networks employ a decentralized unstructured networking model that relies on node cooperation for key network(More)
User-generated content (UGC) also known as usercreated 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 and(More)
The complementary characteristics of 3G cellular networks (such as UMTS) and IEEE's 802.11 wireless LANs (WLANs) have stimulated intensive research efforts to integrate UMTS and WLAN networks. In such integrated networks, a mobile station is able to switch between UMTS and WLAN networks based on various network parameters such as network throughput, packet(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 fixedsize observation windows and seemingly-intuitive rate increase(More)
In this paper, we study the rate adaptation problem in IEEE 802.11 based wireless networks. The majority of existing rate control schemes are based on a well believed intuition that data rate should be adjusted according to a comprehensive view of real-time channel conditions. To be specific, the rate is reduced on frame losses which indicate a degradation(More)
  • 1