Kohei WATABE


A Parallel Flow Monitoring Technique That Achieves Accurate Delay Measurement
Kohei WATABE Shintaro HIRAKAWA Kenji NAKAGAWA 
Publication:   
Publication Date: 2019/04/01
Vol. E102-B  No. 4  pp. 865-875
Type of Manuscript:  PAPER
Category: Network Management/Operation
Keyword: 
active measurementparallel monitoringprobe packetsdelay measurementend-to-end delay
 Summary | Full Text:PDF

Measuring Lost Packets with Minimum Counters in Traffic Matrix Estimation
Kohei WATABE Toru MANO Takeru INOUE Kimihiro MIZUTANI Osamu AKASHI Kenji NAKAGAWA 
Publication:   
Publication Date: 2019/01/01
Vol. E102-B  No. 1  pp. 76-87
Type of Manuscript:  PAPER
Category: Fundamental Theories for Communications
Keyword: 
traffic matrixpacket dropsubmodular optimizationfailure localizationpassive measurement
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Improving Fairness in Wireless Ad Hoc Networks by Channel Access Sensing at Link Layer and Packet Rate Control
Nguyen Minh TUAN Kohei WATABE Pham Thanh GIANG Kenji NAKAGAWA 
Publication:   
Publication Date: 2017/10/01
Vol. E100-B  No. 10  pp. 1818-1826
Type of Manuscript:  PAPER
Category: Network
Keyword: 
fairnessthroughputwireless ad hoc networkchannel utilizationdequeue rateRound Robinlink layer
 Summary | Full Text:PDF | (Errata[Uploaded on November 1,2017])

Packet Delay Estimation That Transcends a Fundamental Accuracy Bound due to Bias in Active Measurements
Kohei WATABE Kenji NAKAGAWA 
Publication:   
Publication Date: 2017/08/01
Vol. E100-B  No. 8  pp. 1377-1387
Type of Manuscript:  PAPER
Category: Fundamental Theories for Communications
Keyword: 
active measurementprobe packetsbiasintrusivenessdelay
 Summary | Full Text:PDF

Contact Duration-Aware Epidemic Broadcasting in Delay/Disruption-Tolerant Networks
Kohei WATABE Hiroyuki OHSAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/12/01
Vol. E98-B  No. 12  pp. 2389-2399
Type of Manuscript:  PAPER
Category: Network
Keyword: 
delay/disruption-tolerant networksopportunistic networksepidemic broadcastingcontact duration distributionmobile ad-hoc network
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On Optimal Magnitude of Fluctuations in Probe Packet Arrival Intervals
Kohei WATABE Masaki AIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/12/01
Vol. E96-B  No. 12  pp. 3028-3040
Type of Manuscript:  PAPER
Category: Fundamental Theories for Communications
Keyword: 
active measurementfluctuationprobe packetperiodicity
 Summary | Full Text:PDF