The Experts below are selected from a list of 9 Experts worldwide ranked by ideXlab platform

Y Altunbasak - One of the best experts on this subject based on the ideXlab platform.

  • estimating Packet arrival times in bursty video applications
    International Conference on Multimedia and Expo, 2005
    Co-Authors: Ali C Begen, Y Altunbasak
    Abstract:

    In retransmission-based error-control methods, the most fundamental yet the paramount problem is to determine how long the sender (or the receiver) should wait before deciding that an unacknowledged (or a Missing) Packet is lost. This waiting time is generally referred to as retransmission timeout (RTO). An accurate RTO estimation has two main advantages: First, the lost Packets can be identified earlier, and hence, can be recovered faster. Second, redundant retransmissions can be avoided, which subsequently not only saves the network resources, but also helps existing network congestion alleviate sooner. Although it is statistically possible to prevent any unnecessary retransmission at the expense of long error-recovery times, such an approach can only be justified for data applications; it is not well-suited for delay-sensitive applications, for which the agility in recovering the lost Packets is as important. With this motivation, we recently introduced an RTO estimation algorithm for delay-sensitive applications (A. C. Begen et al., 2004). Provided that the Packets are transmitted at equal intervals, this technique successfully estimates the arrival times based on the interarrival-time observations. In this study, we relax the requirement of equal transmission intervals and generalize our technique to handle bursty video applications

Ali C Begen - One of the best experts on this subject based on the ideXlab platform.

  • estimating Packet arrival times in bursty video applications
    International Conference on Multimedia and Expo, 2005
    Co-Authors: Ali C Begen, Y Altunbasak
    Abstract:

    In retransmission-based error-control methods, the most fundamental yet the paramount problem is to determine how long the sender (or the receiver) should wait before deciding that an unacknowledged (or a Missing) Packet is lost. This waiting time is generally referred to as retransmission timeout (RTO). An accurate RTO estimation has two main advantages: First, the lost Packets can be identified earlier, and hence, can be recovered faster. Second, redundant retransmissions can be avoided, which subsequently not only saves the network resources, but also helps existing network congestion alleviate sooner. Although it is statistically possible to prevent any unnecessary retransmission at the expense of long error-recovery times, such an approach can only be justified for data applications; it is not well-suited for delay-sensitive applications, for which the agility in recovering the lost Packets is as important. With this motivation, we recently introduced an RTO estimation algorithm for delay-sensitive applications (A. C. Begen et al., 2004). Provided that the Packets are transmitted at equal intervals, this technique successfully estimates the arrival times based on the interarrival-time observations. In this study, we relax the requirement of equal transmission intervals and generalize our technique to handle bursty video applications

Teaching And Learning Computer Networking During The Pandemic And Beyond - One of the best experts on this subject based on the ideXlab platform.

  • Towards a Collection of Packet Trace Interactive Exercises for Computer Networking Education
    2020
    Co-Authors: Piraux Maxime, Taffin Ludovic, Bonaventure Olivier, Teaching And Learning Computer Networking During The Pandemic And Beyond
    Abstract:

    Students do not only learn by reading textbooks and listening to their professors. They also learn by answering questions challenging their knowledge and enabling them learn from their mistakes. In this paper, we present a set of automated exercises that empower students to learn in an online setting. These exercises take the form of cloze-like tests requiring students to fill in Missing Packet field values of several key Internet protocols. Those educational resources are open and free to use. We invite the computer networking teaching community to collaborate to add new exercises covering further key Internet protocols

Piraux Maxime - One of the best experts on this subject based on the ideXlab platform.

  • Towards a Collection of Packet Trace Interactive Exercises for Computer Networking Education
    2020
    Co-Authors: Piraux Maxime, Taffin Ludovic, Bonaventure Olivier, Teaching And Learning Computer Networking During The Pandemic And Beyond
    Abstract:

    Students do not only learn by reading textbooks and listening to their professors. They also learn by answering questions challenging their knowledge and enabling them learn from their mistakes. In this paper, we present a set of automated exercises that empower students to learn in an online setting. These exercises take the form of cloze-like tests requiring students to fill in Missing Packet field values of several key Internet protocols. Those educational resources are open and free to use. We invite the computer networking teaching community to collaborate to add new exercises covering further key Internet protocols

Budiarto Rahmat - One of the best experts on this subject based on the ideXlab platform.

  • High Load Control Mechanism for SIP Servers
    Universitas Sriwijaya, 2016
    Co-Authors: Montazerolghaem Ahmadreza, Hosseini-seno Seyed-amin, Hossein Yaghmaee Mohammad, Budiarto Rahmat
    Abstract:

    To start voice, image, instant messaging, and generally multimedia communication, session communication must begin between two participants. SIP (session initiation protocol) that is an application layer control induces management and terminates this kind of sessions. As far as the independence of SIP from transport layer protocols is concerned, SIP messages can be transferred on a variety of transport layer protocols including TCP or UDP. Mechanism of Retransmission that is embedded in SIP could compensate for the Missing Packet loss, in case of need. This mechanism is applied when SIP messages are transmitted on an unreliable transmission layer protocol like UDP. Also, while facing SIP proxy with overload, it could cause excessive filling of proxy queue, postpone increase of other contacts, and add to the amount of the proxy overload. In the present work, while using UDP as transport layer protocol, invite retransmission timer (T1) was appropriately regulated and SIP functionality was improved. Therefore, by proposing an adaptive timer of invite message retransmission, attempts were made to improve the time of session initiation and consequently improve the performance. Performance of the proposed SIP was implemented and evaluated by SIPP software in a real network environment and its accuracy and performance were demonstrated