Packet Traffic

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Biswanath Mukherjee - One of the best experts on this subject based on the ideXlab platform.

  • efficient scheduling of nonuniform Packet Traffic in a wdm tdm local lightwave network with arbitrary transceiver tuning latencies
    IEEE Journal on Selected Areas in Communications, 1996
    Co-Authors: Michael S Borella, Biswanath Mukherjee
    Abstract:

    A passive-star-based, broadcast-and-select, local lightwave network which can support a limited number of wavelength-division multiplexed (WDM) channels, but serve a much larger number of nodes, is considered. Each node is equipped with one tunable transmitter and one fixed receiver, and each WDM channel is operated in a time-division multiplexed (TDM) fashion for carrying Packet Traffic. Bandwidth is allocated to the node pairs when Traffic flow between them is nonuniform, while also accommodating transceiver tuning latency. Our approach exploits well-known results from scheduling theory to create efficient transmission schedules. Multiprocessor task scheduling heuristics that can be applied to load balancing in a multichannel network is also examined.

  • Efficient scheduling of nonuniform Packet Traffic in a WDM/TDM local lightwave network with arbitrary transceiver tuning latencies
    IEEE Journal on Selected Areas in Communications, 1996
    Co-Authors: Michael S Borella, Biswanath Mukherjee
    Abstract:

    A passive-star-based, broadcast-and-select, local lightwave network which can support a limited number of wavelength-division multiplexed (WDM) channels, but serve a much larger number of nodes, is considered. Each node is equipped with one tunable transmitter and one fixed receiver, and each WDM channel is operated in a time-division multiplexed (TDM) fashion for carrying Packet Traffic. Bandwidth is allocated to the node pairs when Traffic flow between them is nonuniform, while also accommodating transceiver tuning latency. Our approach exploits well-known results from scheduling theory to create efficient transmission schedules. Multiprocessor task scheduling heuristics that can be applied to load balancing in a multichannel network is also examined.

  • efficient scheduling of nonuniform Packet Traffic in a wdm tdm local lightwave network with arbitrary transceiver tuning latencies
    International Conference on Computer Communications, 1995
    Co-Authors: Michael S Borella, Biswanath Mukherjee
    Abstract:

    A passive-star-based, broadcast-and-select, local lightwave network which can support a limited number of WDM channels (on the order of ten), but serve a much larger number of nodes (a few tens or hundreds), is considered. Each node is equipped with one tunable transmitter and one fixed receiver, and each WDM channel is operated in a TDM fashion for carrying Packet Traffic. Bandwidth is allocated to the node pairs when Traffic flow between them is non-uniform, while also accommodating transceiver tuning latency. Our approach exploits well-known results from scheduling theory to create efficient transmission schedules.

  • INFOCOM - Efficient scheduling of nonuniform Packet Traffic in a WDM/TDM local lightwave network with arbitrary transceiver tuning latencies
    Proceedings of INFOCOM'95, 1
    Co-Authors: Michael S Borella, Biswanath Mukherjee
    Abstract:

    A passive-star-based, broadcast-and-select, local lightwave network which can support a limited number of WDM channels (on the order of ten), but serve a much larger number of nodes (a few tens or hundreds), is considered. Each node is equipped with one tunable transmitter and one fixed receiver, and each WDM channel is operated in a TDM fashion for carrying Packet Traffic. Bandwidth is allocated to the node pairs when Traffic flow between them is non-uniform, while also accommodating transceiver tuning latency. Our approach exploits well-known results from scheduling theory to create efficient transmission schedules.

Michael S Borella - One of the best experts on this subject based on the ideXlab platform.

  • efficient scheduling of nonuniform Packet Traffic in a wdm tdm local lightwave network with arbitrary transceiver tuning latencies
    IEEE Journal on Selected Areas in Communications, 1996
    Co-Authors: Michael S Borella, Biswanath Mukherjee
    Abstract:

    A passive-star-based, broadcast-and-select, local lightwave network which can support a limited number of wavelength-division multiplexed (WDM) channels, but serve a much larger number of nodes, is considered. Each node is equipped with one tunable transmitter and one fixed receiver, and each WDM channel is operated in a time-division multiplexed (TDM) fashion for carrying Packet Traffic. Bandwidth is allocated to the node pairs when Traffic flow between them is nonuniform, while also accommodating transceiver tuning latency. Our approach exploits well-known results from scheduling theory to create efficient transmission schedules. Multiprocessor task scheduling heuristics that can be applied to load balancing in a multichannel network is also examined.

  • Efficient scheduling of nonuniform Packet Traffic in a WDM/TDM local lightwave network with arbitrary transceiver tuning latencies
    IEEE Journal on Selected Areas in Communications, 1996
    Co-Authors: Michael S Borella, Biswanath Mukherjee
    Abstract:

    A passive-star-based, broadcast-and-select, local lightwave network which can support a limited number of wavelength-division multiplexed (WDM) channels, but serve a much larger number of nodes, is considered. Each node is equipped with one tunable transmitter and one fixed receiver, and each WDM channel is operated in a time-division multiplexed (TDM) fashion for carrying Packet Traffic. Bandwidth is allocated to the node pairs when Traffic flow between them is nonuniform, while also accommodating transceiver tuning latency. Our approach exploits well-known results from scheduling theory to create efficient transmission schedules. Multiprocessor task scheduling heuristics that can be applied to load balancing in a multichannel network is also examined.

  • efficient scheduling of nonuniform Packet Traffic in a wdm tdm local lightwave network with arbitrary transceiver tuning latencies
    International Conference on Computer Communications, 1995
    Co-Authors: Michael S Borella, Biswanath Mukherjee
    Abstract:

    A passive-star-based, broadcast-and-select, local lightwave network which can support a limited number of WDM channels (on the order of ten), but serve a much larger number of nodes (a few tens or hundreds), is considered. Each node is equipped with one tunable transmitter and one fixed receiver, and each WDM channel is operated in a TDM fashion for carrying Packet Traffic. Bandwidth is allocated to the node pairs when Traffic flow between them is non-uniform, while also accommodating transceiver tuning latency. Our approach exploits well-known results from scheduling theory to create efficient transmission schedules.

  • INFOCOM - Efficient scheduling of nonuniform Packet Traffic in a WDM/TDM local lightwave network with arbitrary transceiver tuning latencies
    Proceedings of INFOCOM'95, 1
    Co-Authors: Michael S Borella, Biswanath Mukherjee
    Abstract:

    A passive-star-based, broadcast-and-select, local lightwave network which can support a limited number of WDM channels (on the order of ten), but serve a much larger number of nodes (a few tens or hundreds), is considered. Each node is equipped with one tunable transmitter and one fixed receiver, and each WDM channel is operated in a TDM fashion for carrying Packet Traffic. Bandwidth is allocated to the node pairs when Traffic flow between them is non-uniform, while also accommodating transceiver tuning latency. Our approach exploits well-known results from scheduling theory to create efficient transmission schedules.

Michael Paterakis - One of the best experts on this subject based on the ideXlab platform.

Polychronis Koutsakis - One of the best experts on this subject based on the ideXlab platform.

  • Medium Access Control for Integrated Multimedia Wireless Access with the Use of a Video Packet Discard Scheme
    Wireless Personal Communications, 2006
    Co-Authors: Polychronis Koutsakis, M. Vafiadis
    Abstract:

    A well designed Medium Access Control (MAC) protocol for wireless networks should provide an efficient mechanism to share the limited bandwidth resources, and satisfy the diverse and usually contradictory Quality of Service (QoS) requirements of each Traffic class. In this paper a new MAC protocol for next generation wireless communications is presented and investigated. The protocol uses a combined Packet Discard/Forward Error Correction scheme in order to efficiently integrate MPEG-4 videoconference Packet Traffic with voice, SMS data and web Packet Traffic over a noisy wireless channel of high capacity. Our scheme achieves high aggregate channel throughput in all cases of Traffic load, while preserving the Quality of Service (QoS) requirements of each Traffic type, and is shown to clearly outperform DPRMA, another efficient MAC protocol proposed in the literature for multimedia Traffic integration over wireless networks.

  • Integrated wireless access for videoconference from MPEG-4 and H.263 video coders with voice, E-mail, and web Traffic
    IEEE Transactions on Vehicular Technology, 2005
    Co-Authors: Polychronis Koutsakis, S. Psychis, Michael Paterakis
    Abstract:

    In this paper, a new medium access control protocol for wireless communications, named Multimedia Integration Multiple Access Control (MI-MAC), is presented and investigated. We explore, via an extensive simulation study, the performance of MI-MAC when integrating voice, e-mail data, and web Packet Traffic with either MPEG-4 or H.263 videoconference streams over a noisy wireless channel of high capacity. Our scheme, one of the first in the literature that considers the integration of MPEG-4 or H.263 streams with other types of Packet Traffic over wireless networks, achieves high aggregate channel throughput in all cases of Traffic load, while preserving the quality of service (QoS) requirements of each Traffic type.

  • Integrating Voice, Video, and E-mail Data Packet Traffic over Wireless TDMA Channels with Errors
    International Journal of Wireless Information Networks, 2001
    Co-Authors: Polychronis Koutsakis, Michael Paterakis
    Abstract:

    In this paper, we explore, via an extensive simulation study, the performance of a new medium access-control (MAC) protocol when integrating voice, video, and e-mail data Packet Traffic over a wireless channel of high capacity, with errors. Depending on the number of video users admitted into the system, our protocol varies (a) the request bandwidth dedicated to resolving the voice users contention and (b) the probability with which the base station grants information slots to voice users, in order to preserve full priority for video Traffic. We evaluate the voice and video Packet-dropping probabilities for various voice and video load conditions and the average e-mail data message delays. Our scheme achieves high aggregate channel throughput in all cases of Traffic load despite the introduction of errors in the system.

  • PIMRC - On the integration of MPEG-4 video streams with voice and e-mail data Packet Traffic over wireless picocellular networks
    12th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598), 1
    Co-Authors: Polychronis Koutsakis, S. Psychis, Michael Paterakis
    Abstract:

    A new medium access control (MAC) protocol for mobile wireless communications is presented and investigated. We explore, via an extensive simulation study, the performance of the protocol when integrating voice, MPEG-4 video and e-mail data Packet Traffic over a wireless channel of high capacity. Our scheme achieves high aggregate channel throughput in all cases of Traffic load, while preserving the quality of service (QoS) requirements of each Traffic type.

  • PIMRC - Integrating voice, video and bursty data Packet Traffic over burst-error wireless TDMA channels with adjustable request bandwidth
    12th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598), 1
    Co-Authors: Polychronis Koutsakis, Michael Paterakis, S. Psychis
    Abstract:

    In this paper we explore, via an extensive simulation study, the performance of a new medium access control (MAC) protocol when integrating voice, video and E-mail data Packet Traffic over a wireless channel of high capacity, with errors. We evaluate the voice and video Packet dropping probabilities and the average E-mail data message delays. Our scheme achieves high aggregate channel throughput in all cases of Traffic load, despite the presence of noise in the system and the very restraining video dropping probability limit.

Anna T. Lawniczak - One of the best experts on this subject based on the ideXlab platform.

  • CCECE - Detection of anomalous Packet Traffic via entropy
    2009 Canadian Conference on Electrical and Computer Engineering, 2009
    Co-Authors: Anna T. Lawniczak, Bruno N. Di Stefano
    Abstract:

    We study if information entropy of Packet Traffic passing through selected set of routers may detect anomalous Packet Traffic (e.g., distributed denial-of-service (DDoS) attacks) in a Packet switching network (PSN) model. Given a certain PSN model setup (i.e., topology, routing algorithm, and source load value) a “natural” entropy profile of normal Packet Traffic monitored at selected routers characterizes normal operation of PSN model. When entropy of Packet Traffic deviates significantly from this “natural” profile it means that some anomaly in Packet Traffic emerges. Our simulations of ping DDoS attacks show that after start of attacks the entropy of Packet Traffics monitored network-wide at relatively small sets of routers may significantly drop and that it is easier to detect these drops if static routing is used instead of dynamic routing. Thus, for detection of DDoS attacks and other anomalous Packet Traffic information entropy of Packet Traffic monitored network-wide at properly selected routers can be a useful tool.

  • CompleNet - Detection of Packet Traffic Anomalous Behaviour via Information Entropy
    Complex Networks, 2009
    Co-Authors: Anna T. Lawniczak, Bruno N. Di Stefano
    Abstract:

    Spatio-temporal dynamics of Packet Traffic in data networks is complex and its monitoring is a challenging task. We study if information entropy of Packet Traffic monitored at selected set of nodes may provide a method for monitoring network-wide behaviour of Packet Traffic and for detection of anomalous Traffic, e.g., distributed denial-of-service attacks. We conduct our investigation for a Packet switching network model for static and dynamic routings. We show that the proposed information entropy method may detect changes in “natural” randomness of spatio-temporal distributions of Packets among routers caused by anomalous Traffic and that the emerging anomalies are easier to detect for DDoS attacks with larger number of attackers and/or on networks using static rather than dynamic routing.

  • Complex (2) - Entropy Based Detection of DDoS Attacks in Packet Switching Network Models
    Lecture Notes of the Institute for Computer Sciences Social Informatics and Telecommunications Engineering, 2009
    Co-Authors: Anna T. Lawniczak, Bruno N. Di Stefano
    Abstract:

    Distributed denial-of-service (DDoS) attacks are network-wide attacks that cannot be detected or stopped easily. They affect “natural” spatio-temporal Packet Traffic patterns, i.e. “natural distributions” of Packets passing through the routers. Thus, they affect “natural” information entropy profiles, a sort of “fingerprints”, of normal Packet Traffic. We study if by monitoring information entropy of Packet Traffic through selected routers one may detect DDoS attacks or anomalous Packet Traffic in Packet switching network (PSN) models. Our simulations show that the considered DDoS attacks of “ping” type cause shifts in information entropy profiles of Packet Traffic monitored even at small sets of routers and that it is easier to detect these shifts if static routing is used instead of dynamic routing. Thus, network-wide monitoring of information entropy of Packet Traffic at properly selected routers may provide means for detecting DDoS attacks and other anomalous Packet Traffics.

  • CISDA - Detection & study of DDoS attacks via entropy in data network models
    2009 IEEE Symposium on Computational Intelligence for Security and Defense Applications, 2009
    Co-Authors: Anna T. Lawniczak, Bruno N. Di Stefano
    Abstract:

    We detect & study Packet Traffic anomalies similar to DDoS attacks using information entropy. We perform network-wide monitoring of information entropy of Packet Traffic at a small number of selected routers. Our method is based on the fact that DDoS attacks change the “natural” order and randomness of Packet Traffic passing through monitored routers when an attack is taking place in the network. Through this change we detect the start of the attack and study its evolution. We conduct this study for Packet-switching networks using static and dynamic routing.

  • BIOWIRE - Wavelet-Domain Statistics of Packet Switching Networks Near Traffic Congestion
    Bio-Inspired Computing and Communication, 2008
    Co-Authors: Pietro Liò, Anna T. Lawniczak, Shengkun Xie
    Abstract:

    Recent theoretical and applied works have demonstrated the appropriateness of wavelets for analysing signals containing non- stationarity, unsteadiness, self-similarity, and non-Markovity. We applied wavelets to study Packet Traffic in a Packet switching network model, focusing on the spectral properties of Packet Traffic near phase transition (critical point) from free flow to congestion, and considered different dynamic & static routing metrics. We show that "wavelet power spectra"and variance are important estimators of the changes occurring with source load increasing from sub-critical, through critical, to super-critical and it depends on the routing algorithm.

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