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Paper Abstract and Keywords
Presentation 2005-09-16 10:45
Evaluation of scalable QoS degradation locating from end-to-end flow quality information
Masayoshi Kobayashi, Yohei Hasegawa, Tutomu Murase (NEC Corp.)
Abstract (in Japanese) (See Japanese page) 
(in English) We have proposed a method to locating the QoS degradation points from end-to-end per flow quality information and network routing information. This existing method, however, needs to process whole network information at once. This makes the method difficult to be applied for the large networks because the number of flows and the routing information becomes huge in such networks. In this paper, we propose a scalable locating method. It divides the network into small networks, and combines both the results of locating from the intra-network flow (intra-network locating) and the results of locating from the subset of inter-network flows (intra-network locating). In the proposed method, because the intra-network locating can be parallelized and the inter-network locating uses only the subset of intra-network flows, the time required to locate the degraded points is expected to be reduced significantly. In the simulation, we will show that the proposed method can accelerate the speed of locating more than the order of magnitude at most while the accuracy of the proposed method is equivalent to the existing method.
Keyword (in Japanese) (See Japanese page) 
(in English) network monitoring / QoS measurement / active measurement / network tomography / / / /  
Reference Info. IEICE Tech. Rep., vol. 105, no. 279, IN2005-77, pp. 97-102, Sept. 2005.
Paper # IN2005-77 
Date of Issue 2005-09-08 (NS, IN, CS) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee CS IN NS  
Conference Date 2005-09-15 - 2005-09-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Active Network, IP-VPN, Network Security, High Speed Network, P2P Communication, Network Software, and Others 
Paper Information
Registration To IN 
Conference Code 2005-09-CS-IN-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of scalable QoS degradation locating from end-to-end flow quality information 
Sub Title (in English)  
Keyword(1) network monitoring  
Keyword(2) QoS measurement  
Keyword(3) active measurement  
Keyword(4) network tomography  
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1st Author's Name Masayoshi Kobayashi  
1st Author's Affiliation NEC Corporation (NEC Corp.)
2nd Author's Name Yohei Hasegawa  
2nd Author's Affiliation NEC Corporation (NEC Corp.)
3rd Author's Name Tutomu Murase  
3rd Author's Affiliation NEC Corporation (NEC Corp.)
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Speaker Author-1 
Date Time 2005-09-16 10:45:00 
Presentation Time 90 minutes 
Registration for IN 
Paper # NS2005-89, IN2005-77, CS2005-35 
Volume (vol) vol.105 
Number (no) no.278(NS), no.279(IN), no.280(CS) 
Page pp.61-66(NS), pp.97-102(IN), pp.109-114(CS) 
#Pages
Date of Issue 2005-09-08 (NS, IN, CS) 


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