University of Duisburg-Essen

Displaying 1-5 of 5 results

  • White Papers // Feb 2012

    Jam-X: Wireless Agreement Under Interference

    Wireless low-power transceivers used in sensor networks such as IEEE 802.15.4 typically operate in unlicensed frequency bands that are subject to external interference from devices transmitting at much higher power. Communication protocols should therefore be designed to be robust against such interference. A critical building block of many protocols at...

    Provided By University of Duisburg-Essen

  • White Papers // Jun 2011

    Link Quality Ranking: Getting the Best Out of Unreliable Links

    Link quality estimation has been an active area of research within the wireless sensor network community. It is now well-known that the estimation of reliable links requires few sample packets - less than 10, while the estimation of unreliable links require many more - above 50. In scenarios where unreliable...

    Provided By University of Duisburg-Essen

  • White Papers // Feb 2011

    Smart-HOP: A Reliable Handoff Procedure for Supporting Mobility in Wireless Sensor Networks

    This paper presents smart-HOP, a reliable hand-off mechanism for mobility support in Wireless Sensor Networks (WSNs). This technique relies on a fuzzy logic approach applied at two levels: the link quality estimation level and the access point selection level. The authors present the conceptual design of smart-HOP and then they...

    Provided By University of Duisburg-Essen

  • White Papers // Jun 2010

    Overview and Evaluation of the Server Redundancy and Session Failover Mechanisms in the Reliable Server Pooling Framework

    The number of availability-critical Internet applications is steadily increasing. To support the development and operation of such applications, the IETF has recently defined a new standard for a common server redundancy and session failover framework: Reliable Server Pooling (RSerPool). The basic ideas of the RSerPool framework are not entirely new,...

    Provided By University of Duisburg-Essen

  • White Papers // Jan 2009

    Towards Logical Clocks in P2P-Based MMVEs

    A crucial requirement for Peer-To-Peer-based Massively Multiuser Virtual Environments (P2P-based MMVEs) is the accurate and reliable synchronization of actions among the users (processes). To do so, clock synchronization protocols can be used. In this paper, the authors first analyze the usage of standard vector clocks for this purpose and show...

    Provided By University of Duisburg-Essen

  • White Papers // Jun 2010

    Overview and Evaluation of the Server Redundancy and Session Failover Mechanisms in the Reliable Server Pooling Framework

    The number of availability-critical Internet applications is steadily increasing. To support the development and operation of such applications, the IETF has recently defined a new standard for a common server redundancy and session failover framework: Reliable Server Pooling (RSerPool). The basic ideas of the RSerPool framework are not entirely new,...

    Provided By University of Duisburg-Essen

  • White Papers // Jun 2011

    Link Quality Ranking: Getting the Best Out of Unreliable Links

    Link quality estimation has been an active area of research within the wireless sensor network community. It is now well-known that the estimation of reliable links requires few sample packets - less than 10, while the estimation of unreliable links require many more - above 50. In scenarios where unreliable...

    Provided By University of Duisburg-Essen

  • White Papers // Feb 2011

    Smart-HOP: A Reliable Handoff Procedure for Supporting Mobility in Wireless Sensor Networks

    This paper presents smart-HOP, a reliable hand-off mechanism for mobility support in Wireless Sensor Networks (WSNs). This technique relies on a fuzzy logic approach applied at two levels: the link quality estimation level and the access point selection level. The authors present the conceptual design of smart-HOP and then they...

    Provided By University of Duisburg-Essen

  • White Papers // Jan 2009

    Towards Logical Clocks in P2P-Based MMVEs

    A crucial requirement for Peer-To-Peer-based Massively Multiuser Virtual Environments (P2P-based MMVEs) is the accurate and reliable synchronization of actions among the users (processes). To do so, clock synchronization protocols can be used. In this paper, the authors first analyze the usage of standard vector clocks for this purpose and show...

    Provided By University of Duisburg-Essen

  • White Papers // Feb 2012

    Jam-X: Wireless Agreement Under Interference

    Wireless low-power transceivers used in sensor networks such as IEEE 802.15.4 typically operate in unlicensed frequency bands that are subject to external interference from devices transmitting at much higher power. Communication protocols should therefore be designed to be robust against such interference. A critical building block of many protocols at...

    Provided By University of Duisburg-Essen