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APPARATUS AND METHOD FOR DETECTING QUALITY DEGRADATION SIGN IN STREAMING DISTRIBUTION, ROUTE INFORMATION EXTRACTION PROGRAM AND ITS RECORDING MEDIUM, DISTRIBUTION QUALITY EXTRACTION PROGRAM AND ITS RECORDING MEDIUM, QUALITY CONTROL ANALYSIS PROGRAM AND ITS RECORDING MEDIUM
APPARATUS AND METHOD FOR DETECTING QUALITY DEGRADATION SIGN IN STREAMING DISTRIBUTION, ROUTE INFORMATION EXTRACTION PROGRAM AND ITS RECORDING MEDIUM, DISTRIBUTION QUALITY EXTRACTION PROGRAM AND ITS RECORDING MEDIUM, QUALITY CONTROL ANALYSIS PROGRAM AND ITS RECORDING MEDIUM
PROBLEM TO BE SOLVED: To detect a sign of the quality deterioration of the contents distribution to avoid the quality deterioration in advance.;SOLUTION: A route information extractor 8 traces route information between routers 2, 4, a distribution quality extractor 7 traces a control message and a TCP-ACK frame between a client 1 and a streaming distributor 6. A quality control analyzer 9 identifies an AS tending to deteriorate the distribution quality, based on information transferred from the route information extractor 8 and the distribution quality extractor 7, and controls to deny a new user's streaming distribution request from the identified AS tending to deteriorate the distribution quality, to reduce the distribution band for low-priority users, or to reduce the distribution band for low-priority contents.;COPYRIGHT: (C)2005,JPO&NCIPI
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