自然科学版 英文版
自然科学版 英文版
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中南大学学报(英文版)

Journal of Central South University

Vol. 14    No. 3    June 2007

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Improved sample filtering method for measuring end-to-end path capacity
LI Wen-wei(黎文伟)1, TANG Jun-long(唐俊龙)2, ZHANG Da-fang(张大方)1, XIE Gao-gang(谢高岗)3

1. School of Software, Hunan University, Changsha 410082, China;2. Department of Physics and Electronic Science, Changsha University of Science and Technology,Changsha 410082, China;3. Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080, China

Abstract:By analyzing the effect of cross traffic (CT) enforced on packet delay, an improved path capacity measurement method, pcapminp algorithm, was proposed. With this method, path capacity was measured by filtering probe samples based on measured minimum packet-pair delay. The measurability of minimum packet-pair delay was also analyzed by simulation. The results show that, when comparing with pathrate, if the CT load is light, both pcapminp and pathrate have similar accuracy; but in the case of heavy CT load, pcapminp is more accurate than Pathrate. When CT load reaches 90%, pcapminp algorithm has only 5% measurement error, which is 10% lower than that of pathrate algorithm. At any CT load levels, the probe cost of pcapminp algorithm is two magnitudes smaller than that of pathrate, and the measurement duration is one magnitude shorter than that of pathrate algorithm.

 

Key words: network measurement; path capacity; capacity measurement; path delay

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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