1. Title of Your Paper Names of Co-Authors
Communication Networks Laboratory
School of Engineering Science
Simon Fraser University

2. Roadmap Motivation for packet loss analysis
Sources of packet loss in the Internet
Packet loss characterization
Methodology
Simulation scenarios
Simulation results
Conclusions and future work
May 16, 2016
CCECE 2016

3. ns-2 network simulator
Collaborative project among Xerox PARC, LBL, and UCB (
Discrete event network simulator
Provides support for various:
network protocols
topologies
traffic generators
May 16, 2016
CCECE 2016

4. Comparison of simulation data with the Gilbert models
ulp = 0.15
clp = 0.45
Gilbert model fits the simulation data for small loss episodes
Gilbert model underestimates the probability of having longer loss episodes
Simulation run with 100 UDP sources and buffer size of 50 KB (9.2 msec) The loss from source number 50 is observed.
May 16, 2016
CCECE 2016

5. Analysis of packet loss on multiple time scales
What is time scale?
Wavelet analysis of packet loss
My results and the collected packet loss sets have been used to perform further analysis of packet loss on multiple time scales
UDP scenario
TCP scenario
May 16, 2016
CCECE 2016

6. Conclusions UDP transfers:
lengthier packet loss episodes have large contribution, which indicates that UDP packet loss is highly bursty
contribution of packet loss episodes decreases approximately geometrically with increase of the length of packet loss episode
May 16, 2016
CCECE 2016

7. References
K. Park and W. Willinger, “Self-similar network traffic: an overview,” in Self-similar Network Traffic and Performance Evaluation, K. Park and W. Willinger, Eds. New York: Wiley, 2000, pp. 1–38.
D. Veitch and P. Abry, “A wavelet-based joint estimator of the parameters of long-range dependence,” IEEE Trans. Information Theory, vol. 45, no. 3, pp. 878–897, Apr
V. Jacobson, “Congestion avoidance and control,” in Proc. ACM SIGCOMM '88 Symposium on Communications Architectures and Protocols, Stanford, CA, USA, Aug. 1988, pp. 314–329.
J. C. Bolot, “End-to-end packet delay and loss behavior in the Internet,” in Proc. ACM SIGCOMM '93 Conference on Communications Architectures, Protocols and Applications, San Francisco, CA, USA, Sept. 1993, pp. 289–298.
M. Yajnik, S. Moon, J. Kurose, and D. Towsley, “Measurement and modeling of the temporal dependence in packet loss,” in Proc. IEEE INFOCOM, New York, NY, USA, Mar. 1999, pp. 345–352.
May 16, 2016
CCECE 2016