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Anthony Ephremides - One of the best experts on this subject based on the ideXlab platform.

  • Impact of Hostile Interference on Wireless Link Connectivity
    IEEE Transactions on Control of Network Systems, 2018
    Co-Authors: Gam D. Nguyen, Sastry Kompella, Clement Kam, Jeffrey E. Wieselthier, Anthony Ephremides
    Abstract:

    We formulate the interaction between Link Connectivity and hostile interference in a wireless system as a nonzero-sum two-player game. One player is the transmitter aiming to maintain the connections to its receivers, whereas the other player is the interferer aiming to disrupt the connections. The players’ strategies are their transmitted power levels. We focus on the case in which the ratio of the averages of the channel power gains for the transmitter and interferer are the same at all receivers. We then provide closed-form expressions for the Nash and Stackelberg equilibria. When the channel is affected by Rayleigh fading, we show that both players have the same power cost at Nash equilibria. In addition, the Stackelberg strategies dominate the Nash strategies, that is, the utility functions of the Stackelberg equilibria exceed or equal those of the Nash equilibria.

  • wireless Link Connectivity under hostile interference nash and stackelberg equilibria
    Modeling and Optimization in Mobile Ad-Hoc and Wireless Networks, 2016
    Co-Authors: Gam D. Nguyen, Sastry Kompella, Clement Kam, Jeffrey E. Wieselthier, Anthony Ephremides
    Abstract:

    We formulate the interaction between communication and hostile interference in wireless systems as a non-zero-sum two-player game. One player is the transmitter aiming to establish or maintain the communication to its receivers, and the other player is the interferer aiming to prevent or disrupt the communication. The strategy of the transmitter is a transmission power level, while the strategy of the interferer is an interfering power level. We provide closed-form equilibria for both Nash and Stackelberg models. We show that, while a Stackelberg equilibrium always exists, a Nash equilibrium exists only when the wireless channel is affected by fading. In addition, for the case of Rayleigh channel fading, we show that both players have the same power cost at Nash equilibrium.

  • WiOpt - Wireless Link Connectivity under hostile interference: Nash and stackelberg equilibria
    2016 14th International Symposium on Modeling and Optimization in Mobile Ad Hoc and Wireless Networks (WiOpt), 2016
    Co-Authors: Gam D. Nguyen, Sastry Kompella, Clement Kam, Jeffrey E. Wieselthier, Anthony Ephremides
    Abstract:

    We formulate the interaction between communication and hostile interference in wireless systems as a non-zero-sum two-player game. One player is the transmitter aiming to establish or maintain the communication to its receivers, and the other player is the interferer aiming to prevent or disrupt the communication. The strategy of the transmitter is a transmission power level, while the strategy of the interferer is an interfering power level. We provide closed-form equilibria for both Nash and Stackelberg models. We show that, while a Stackelberg equilibrium always exists, a Nash equilibrium exists only when the wireless channel is affected by fading. In addition, for the case of Rayleigh channel fading, we show that both players have the same power cost at Nash equilibrium.

Yonchun Yan - One of the best experts on this subject based on the ideXlab platform.

  • empirical observations on wireless lan performance in vehicular traffic scenarios and Link Connectivity based enhancements for multihop routing
    Wireless Communications and Networking Conference, 2005
    Co-Authors: Jatinder Singh, Nicholas Bambos, B. Srinivasan, D. Clawin, Yonchun Yan
    Abstract:

    In this work we assess the performance of a WLAN in different vehicular traffic and mobility scenarios. Furthermore, we investigate ad-hoc routing for a vehicular network. We deploy a topology consisting of vehicles bearing laptop computers equipped with IEEE 802.11b compliant equipment. Test scenarios for WLAN assessment are varied by conducting experiments under different vehicular mobility, peer-distance and driving environment conditions. The network throughput and the quality of the channel are observed to degrade with increasingly stressful communication scenarios. Based on empirical observations, we present results that can facilitate the development of efficient applications for inter-vehicular communication. To address multihop routing, we investigate and demonstrate the application of Link Connectivity assessment to efficient ad-hoc routing. A framework for enhancements is delineated and incorporated in the implementation of the optimized Link state routing (OLSR) protocol. We demonstrate that the Link quality assessment based enhancements improve the performance of OLSR.

  • WCNC - Empirical observations on wireless LAN performance in vehicular traffic scenarios and Link Connectivity based enhancements for multihop routing
    IEEE Wireless Communications and Networking Conference 2005, 1
    Co-Authors: Jatinder Singh, Nicholas Bambos, B. Srinivasan, D. Clawin, Yonchun Yan
    Abstract:

    In this work we assess the performance of a WLAN in different vehicular traffic and mobility scenarios. Furthermore, we investigate ad-hoc routing for a vehicular network. We deploy a topology consisting of vehicles bearing laptop computers equipped with IEEE 802.11b compliant equipment. Test scenarios for WLAN assessment are varied by conducting experiments under different vehicular mobility, peer-distance and driving environment conditions. The network throughput and the quality of the channel are observed to degrade with increasingly stressful communication scenarios. Based on empirical observations, we present results that can facilitate the development of efficient applications for inter-vehicular communication. To address multihop routing, we investigate and demonstrate the application of Link Connectivity assessment to efficient ad-hoc routing. A framework for enhancements is delineated and incorporated in the implementation of the optimized Link state routing (OLSR) protocol. We demonstrate that the Link quality assessment based enhancements improve the performance of OLSR.

Gam D. Nguyen - One of the best experts on this subject based on the ideXlab platform.

  • Impact of Hostile Interference on Wireless Link Connectivity
    IEEE Transactions on Control of Network Systems, 2018
    Co-Authors: Gam D. Nguyen, Sastry Kompella, Clement Kam, Jeffrey E. Wieselthier, Anthony Ephremides
    Abstract:

    We formulate the interaction between Link Connectivity and hostile interference in a wireless system as a nonzero-sum two-player game. One player is the transmitter aiming to maintain the connections to its receivers, whereas the other player is the interferer aiming to disrupt the connections. The players’ strategies are their transmitted power levels. We focus on the case in which the ratio of the averages of the channel power gains for the transmitter and interferer are the same at all receivers. We then provide closed-form expressions for the Nash and Stackelberg equilibria. When the channel is affected by Rayleigh fading, we show that both players have the same power cost at Nash equilibria. In addition, the Stackelberg strategies dominate the Nash strategies, that is, the utility functions of the Stackelberg equilibria exceed or equal those of the Nash equilibria.

  • wireless Link Connectivity under hostile interference nash and stackelberg equilibria
    Modeling and Optimization in Mobile Ad-Hoc and Wireless Networks, 2016
    Co-Authors: Gam D. Nguyen, Sastry Kompella, Clement Kam, Jeffrey E. Wieselthier, Anthony Ephremides
    Abstract:

    We formulate the interaction between communication and hostile interference in wireless systems as a non-zero-sum two-player game. One player is the transmitter aiming to establish or maintain the communication to its receivers, and the other player is the interferer aiming to prevent or disrupt the communication. The strategy of the transmitter is a transmission power level, while the strategy of the interferer is an interfering power level. We provide closed-form equilibria for both Nash and Stackelberg models. We show that, while a Stackelberg equilibrium always exists, a Nash equilibrium exists only when the wireless channel is affected by fading. In addition, for the case of Rayleigh channel fading, we show that both players have the same power cost at Nash equilibrium.

  • WiOpt - Wireless Link Connectivity under hostile interference: Nash and stackelberg equilibria
    2016 14th International Symposium on Modeling and Optimization in Mobile Ad Hoc and Wireless Networks (WiOpt), 2016
    Co-Authors: Gam D. Nguyen, Sastry Kompella, Clement Kam, Jeffrey E. Wieselthier, Anthony Ephremides
    Abstract:

    We formulate the interaction between communication and hostile interference in wireless systems as a non-zero-sum two-player game. One player is the transmitter aiming to establish or maintain the communication to its receivers, and the other player is the interferer aiming to prevent or disrupt the communication. The strategy of the transmitter is a transmission power level, while the strategy of the interferer is an interfering power level. We provide closed-form equilibria for both Nash and Stackelberg models. We show that, while a Stackelberg equilibrium always exists, a Nash equilibrium exists only when the wireless channel is affected by fading. In addition, for the case of Rayleigh channel fading, we show that both players have the same power cost at Nash equilibrium.

Jatinder Singh - One of the best experts on this subject based on the ideXlab platform.

  • empirical observations on wireless lan performance in vehicular traffic scenarios and Link Connectivity based enhancements for multihop routing
    Wireless Communications and Networking Conference, 2005
    Co-Authors: Jatinder Singh, Nicholas Bambos, B. Srinivasan, D. Clawin, Yonchun Yan
    Abstract:

    In this work we assess the performance of a WLAN in different vehicular traffic and mobility scenarios. Furthermore, we investigate ad-hoc routing for a vehicular network. We deploy a topology consisting of vehicles bearing laptop computers equipped with IEEE 802.11b compliant equipment. Test scenarios for WLAN assessment are varied by conducting experiments under different vehicular mobility, peer-distance and driving environment conditions. The network throughput and the quality of the channel are observed to degrade with increasingly stressful communication scenarios. Based on empirical observations, we present results that can facilitate the development of efficient applications for inter-vehicular communication. To address multihop routing, we investigate and demonstrate the application of Link Connectivity assessment to efficient ad-hoc routing. A framework for enhancements is delineated and incorporated in the implementation of the optimized Link state routing (OLSR) protocol. We demonstrate that the Link quality assessment based enhancements improve the performance of OLSR.

  • Proposal and demonstration of Link Connectivity assessment based enhancements to routing in mobile ad-hoc networks
    2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484), 2003
    Co-Authors: Jatinder Singh, Nicholas Bambos, B. Srinivasan, D. Clawin, Yongchun Yan
    Abstract:

    Wireless ad-hoc networking can be employed to build inter-vehicle communication based applications. The associated hostile driving environment and high mobility exposes the routing protocol to a more dynamically changing topology. In this work we investigate and demonstrate the application of Link-Connectivity assessment to efficient ad-hoc routing. A framework for enhancements is delineated and incorporated in the implementation of OLSR protocol. For performance assessment we deploy a topology consisting of vehicles bearing laptop computers equipped with IEEE 802.11b compliant equipment. Experiments are conducted in a typical environment and routing performance is evaluated based on the UDP packet throughput and round trip time. It is demonstrated that the Link quality assessment based enhancements improve the performance of OLSR. The improved scheme will be referred to as SBRS-OLSR (signal strength assessment based routing enhancements) in this paper.

  • WCNC - Empirical observations on wireless LAN performance in vehicular traffic scenarios and Link Connectivity based enhancements for multihop routing
    IEEE Wireless Communications and Networking Conference 2005, 1
    Co-Authors: Jatinder Singh, Nicholas Bambos, B. Srinivasan, D. Clawin, Yonchun Yan
    Abstract:

    In this work we assess the performance of a WLAN in different vehicular traffic and mobility scenarios. Furthermore, we investigate ad-hoc routing for a vehicular network. We deploy a topology consisting of vehicles bearing laptop computers equipped with IEEE 802.11b compliant equipment. Test scenarios for WLAN assessment are varied by conducting experiments under different vehicular mobility, peer-distance and driving environment conditions. The network throughput and the quality of the channel are observed to degrade with increasingly stressful communication scenarios. Based on empirical observations, we present results that can facilitate the development of efficient applications for inter-vehicular communication. To address multihop routing, we investigate and demonstrate the application of Link Connectivity assessment to efficient ad-hoc routing. A framework for enhancements is delineated and incorporated in the implementation of the optimized Link state routing (OLSR) protocol. We demonstrate that the Link quality assessment based enhancements improve the performance of OLSR.

Guannan Yang - One of the best experts on this subject based on the ideXlab platform.

  • bundle protocol for space communication networks in presence of intermittent Link Connectivity
    Global Communications Conference, 2018
    Co-Authors: Ruhai Wang, Siwei Peng, Alaa Sabbagh, Bin Cao, Kanglian Zhao, Guannan Yang
    Abstract:

    Space communications are characterized by Link intermittent Connectivity and long Link propagation delay. The use of bundle protocol (BP) in space communications has been in debate. An analytical understanding of its performance for reliable data delivery in the presence of Link intermittent Connectivity, especially with a lengthy Link disruption, is quickly needed. In this paper, analytical models are built to estimate the number of transmission rounds (or efforts) caused by the Link disruption and the resulting delay in bundle delivery of BP for applications in space communication networks. The models are validated by conducting bundle delivery experiments using a testbed.

  • GLOBECOM - Bundle Protocol for Space Communication Networks in Presence of Intermittent Link Connectivity
    2018 IEEE Global Communications Conference (GLOBECOM), 2018
    Co-Authors: Ruhai Wang, Siwei Peng, Alaa Sabbagh, Bin Cao, Kanglian Zhao, Guannan Yang
    Abstract:

    Space communications are characterized by Link intermittent Connectivity and long Link propagation delay. The use of bundle protocol (BP) in space communications has been in debate. An analytical understanding of its performance for reliable data delivery in the presence of Link intermittent Connectivity, especially with a lengthy Link disruption, is quickly needed. In this paper, analytical models are built to estimate the number of transmission rounds (or efforts) caused by the Link disruption and the resulting delay in bundle delivery of BP for applications in space communication networks. The models are validated by conducting bundle delivery experiments using a testbed.