Estimating Environment-Independent Parameters on Basis of Comparative Assessment of User's Subjectivity

Yasuhiro SATO, Shin'ichiro KITANO, Shingo ATA, Ikuo OKA

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Summary :

We analyze subjective assessments by comparative evaluations of bulk data transmission by using two psychological methods (the method of successive categories and the constant method). From the results of the first experiment, the thresholds at which participants downloading a data file began to feel dissatisfaction with service degradation are 15.7 Mbps and 11.6 Mbps obtained by the two different methods when the throughput without the service degradation is approximately 22 Mbps. In the second experiment, we investigate the threshold of user satisfaction for various network environments. The threshold is 63% of the throughput of the user's usual network environment. Moreover, from the viewpoint of download time, users feel dissatisfaction with the quality when download time becomes 1.5 times longer. These values can be used to more effectively allocate network resources and thereby achieve higher service quality.

Publication
IEICE TRANSACTIONS on Communications Vol.E94-B No.8 pp.2265-2273
Publication Date
2011/08/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E94.B.2265
Type of Manuscript
PAPER
Category
Network

Authors

Keyword

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