Passive calibration of active measuring latency

Authors:
Jianping Yin;Zhiping Cai;Wentao Zhao;Xianghui Liu
Affiliations:
Department of Computer Science and Technology, National University of Defense Technology, Changsha, China;Department of Computer Science and Technology, National University of Defense Technology, Changsha, China;Department of Computer Science and Technology, National University of Defense Technology, Changsha, China;Department of Computer Science and Technology, National University of Defense Technology, Changsha, China
Venue:
ICN'05 Proceedings of the 4th international conference on Networking - Volume Part II
Year:
2005

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Abstract

Network performance obtained from the active probe packets is not equal to the performance experienced by users. To gain more exact result, the characteristics of packets gained by passive measuring are utilized to calibrate the result of active measuring. Taking the number of user data packets arriving between probe packets and the latency alteration of neighborhood probe packets into account, we propose the Pcoam (Passive Calibration of Active Measurement) method. The actual network status could be reflected more exactly, especially when the network is in congestion and packet loss. And the improvement has been validated by simulation.