論文 - 伊藤 嘉浩
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EDCA Parameter Tuning for QoE-Centric Wireless LAN Access Point 査読あり 国際誌
Kosuke Niwa, Yoshihiro Ito
Proceedings of IEEE GCCE 2018 2018年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
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Proposal of Novel MPTCP Congestion Control to Suppress QoS Fluctuation for WebQoE Improvement 査読あり 国際誌
Kensuke Noda, Yoshihiro Ito
Proceedings of IEEE ICCE-Berlin 2018 2018年09月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
This paper proposes a new congestion control of Multi-Path TCP (MPTCP) for improvement of Quality of Experience (QoE). This method controls the congestion window for each subflow so as to suppress the fluctuation of Quality of Service (QoS). The fluctuation of QoS is estimated from that of the Round Trip Time, and the congestion window is controlled according to the estimated fluctuation. The authors implemented the proposed method and evaluate QoS by experiment. The experimental results show that the proposed method can suppress the fluctuation of QoS as compared with the existing congestion controls of MPTCP under congestion.
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Proposal of Multi-Pathization Method of UDP with SDN for NFS 査読あり 国際誌
Kaori Iwata, Yoshihiro Ito
Proceedings of IEEE ISNCC 2018 2018年06月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
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Development of Wireless LAN Base Station with QoS Control Based on Web-QoE by Bandwidth Control and Priority Control 査読あり 国際誌
Shiho Asano, Yoshihiro Ito
Electronics and Communications in Japan 101 ( 5 ) 12 - 21 2018年05月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：John Willey & Sons, Inc.
This paper develops a wireless local area network (LAN) base station with quality of service control based on Web quality of experience (QoE) by bandwidth control and priority control; it evaluates the performance of the developed system by experiments with subjects. By using the relationship between importance of data of a Web service and the distribution of the length of IP packets, the base station can reduce the bandwidth consumption over a wireless LAN without worsening of QoE. The authors have implemented by adopting two technologies for priority control: OpenFlow and Wi‐Fi multimedia. In the experiment, the authors treat three actual Web services and assess QoE for them. From the experimental results, the authors show the effectiveness of the developed base station.
DOI： 10.1002/ecj.12058
その他リンク： https://onlinelibrary.wiley.com/doi/abs/10.1002/ecj.12058
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帯域制御と優先制御を用いたWeb-QoEに基づくQoS制御を行う 無線LAN基地局の開発 査読あり
淺野志帆, 伊藤嘉浩
電気学会論文誌C 137 ( 12 ) 1 - 9 2017年12月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：電気学会
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Proposal and Development of TCP Multi-Pathization Method with SDN by IoT Devices 査読あり 国際誌
Kaori Iwata, Yoshihiro Ito
Proceedings of 2017 27th International Telecommunication Networks and Applications Conference (ITNAC) 39 - 44 2017年11月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
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Study on Congestion Control of Multipath TCPBased on Web-QoE 査読あり 国際誌
Kensuke Noda, Yoshihiro Ito
Proceedings of 2017 IEEE 6th Global Conference on Consumere Electronics (GCCE2017) 708 - 710 2017年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
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Development of Self-propelled Repeater between Isolated LANs via Wi-Fi 査読あり 国際誌
Kim YoungJoo, Yoshihiro Ito
Proceedings of 2017 IEEE 6th Global Conference on Consumere Electronics (GCCE2017) 172 - 173 2017年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
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A Study on Adjusting EDCA Parameters of QoE-Based Wireless LAN Base Station 査読あり 国際誌
Kosuke Niwa, Yoshihiro Ito
Proceedings of ICTC 2017 599 - 601 2017年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
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Estimation of appropriate transmission rate via a IEEE 802.11 wireless LAN based on WebQoE 査読あり 国際誌
Maya Tabuchi, Yoshihiro Ito
Proceedings of 2017 IEEE International Symposium on Local and Metropolitan Area Networks (LANMAN) 1 - 2 2017年06月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
Abstract:
This paper discusses the most appropriate transmission rate of IEEE 802.11 wireless LAN based on QoE for Web services. Since some QoS parameters have trade-off relationship between each other for the transmission rate, it is difficult to decide the appropriate value of the rate. Thus the authors clarify the relationship between QoE and QoS for Web services by the linear multiple regression analysis. They then adapt measured values of the packet loss rate and those of RTT as QoS parameters for the relationship, and estimate the transmission rate which maximizes the QoE. The authors targeted two actual Web services; shop service and map service; they performed experiments. Their experimental results show that the highest satisfaction can be given when the transmission rate are 9.125 Mb/s and 24.472 Mb/s for the shopping service and the map service, respectively. -
Study on MPTCP Enhancement by IP Routing for WebQoE Improvement 査読あり 国際誌
Yasuomi Muraki, Yoshihiro Ito, Kasumi Tashiro
Proceedings of 2017 International Conference on Platform Technology and Service (PlatCon) 1 - 4 2017年02月
記述言語：英語 掲載種別：研究論文（その他学術会議資料等） 出版者・発行元：IEEE
This paper studies enhancement of Multi-Path TCP(MPTCP), which is one of new transport-layer protocols of TCP/IP protocol suites, by IP routing for improvement of Quality of Experience for a Web service (WebQoE). In order to confirm the effect of IP routing on WebQoE, the author performed experiments with subjects. In the experiment, the subjects assess Quality of Experience of two actual Web services for different paths under 5 experimental environments. The author utilizes Web usability as QoE parameters. The results show that it is desirable to use appropriate routing for MPTCP enhancement in order to improve Web- Quality of Experience.
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IPv4/v6共存環境下におけるリレールータを介した低遅延な経路選択機構の提案と評価 査読あり
溝口知彦, 伊藤嘉浩
電子情報通信学会和文論文誌B J99-B ( 12 ) 1 - 9 2016年12月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：電子情報通信学会
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WebサービスにおけるQoE向上のためのQoSの変動を抑制する新しいTCP服装制御方式の提案 査読あり
柴田将旭, 伊藤嘉浩
電気学会論文誌C 136 ( 12 ) 1 - 7 2016年12月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：電気学会
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Study of the Effect of the Mean and Standard Deviation of Response Time on QoE in Web Services 査読あり 国際誌
Maya Tabuchi, Yoshihiro Ito
Proceedings of ICTC 2016 637 - 639 2016年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
This paper assesses the influence of the mean and the standard deviation of the response time on Quality of Experience(QoE) for a Web service by experiments with subjects. In the experiments, the authors target actual two Web services over the Internet: map service and shopping service; they assess QoE with three scales which are based on ISO924111 usability. And then, the authors reveal the relationship the RTT and the QoE parameters by the linear regression analysis. Our experimental results show that QoE of the map service is affected by the standard deviation of the RTT more strongly than the mean of the RTT while QoE of the shopping service is influenced by the mean more than the standard deviation. Therefore, for the map service, QoS control which is reducing the packet loss by buffering and so on to maintain WebQoE. On the other hand, for the shopping service, QoS control which is reducing the delay is appropriate.
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Study on Relationship between QoS Degradation and QoE for Web services with Personal Digital Assistant 査読あり 国際誌
YeongJoo Kim, Yoshihiro Ito
Proceedings of ICTC 2016 267 - 269 2016年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
ThispaperstudiestheeffectoftheQoSdegradation on WebQoE with personal digital assistant (PDA) by experiment. In the experiment, the authors utilize three types of terminals: PDA, tablet PC and desktop PC; they assess QoE for two actual Web services. The experimental results show that the effect of QoS degradation on QoE with PDA is less than that of a desktop PC for one service. However, for the other service, little different between the effects is recognized. As a result, the paper confirms that the effect of QoS degradation on QoE depends on the type of a terminal.
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Study on Novel Method of QoE Assessment with Electromyogram for an Electronic Book Webcast Service 査読あり 国際誌
Kaori Iwata, Yoshihiro Ito
Proceedings of ICTC 2016 646 - 648 2016年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
This paper studies a novel method of an electronic book Webcast service with electromyography. The proposed method has the following three features. First, we can perform the proposed method at a low cost. Second, the method does not heavily load down users. Finally, the method is portable so we can do it in many situations. This paper did experiments with 18 subjects for an actual Electronic Comics Webcast service. The experimental results show that it is effective for assessing degree of fatigue of the service to utilize the method.
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Proposal of Method for Assessing Hierarchical Relationship between QoS and QoE for Web Services 査読あり 国際誌
Yuuna Adachi, Yoshihiro Ito
Proceedings of ICTC 2016 637 - 639 2016年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEEE
This study proposes a novel method of evaluating hierarchical relationship between QoS and QoE for Web services by utilizing the path analysis and the principal component analysis. The proposed method shorten the number of QoS parameters each layer with the principal component analysis; it then clarify the relationship between the QoS and the QoE by performing the path analysis. To confirm the effectiveness of the proposed method, this paper does experiments with subjects for the three actual Web services and analyzes the relationship between QoS and QoE from the results by the proposed method. The experimental results show the effectiveness of this method.
DOI： 978-1-5090-1325-8/16
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Development of QoE Initiated Wireless LAN Base Station with DPI Based QoS Control 査読あり 国際誌
Shiho Asano, Yoshihiro Ito
Proceedings of IEICE APNOMS 2016 2016年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEICE
In this paper, the authors develop a novel wireless LAN base station with DPI(Deep Packet Inspection) based QoS control, which can maintain QoE during congestion. In the QoS control, the base station always monitors the file type which is found in HTTP messages encapsulated in an IP packet and prioritizes the packet. Since the control is light weight, it can be easily implemented a LAN base station. The authors developed a prototype of the wireless LAN base station with WMM; and they evaluate it by QoE assessment with subjects for actual two Web services. From the experimental results, the authors show the effectiveness of the developed wireless LAN station.
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6to4 環境下で通信品質の劣化がWeb ユーザビリティに及ぼす影響の定量的評価 査読あり
溝口 知彦,伊藤 嘉浩,小屋敷 涼
電気学会論文誌 C 136 ( 4 ) 493 - 501 2016年04月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：電気学会
This paper evaluates effect of the overheads caused by 6to4 tunneling on QoE for Web services by experiment. The authors consider Web usability as QoE and treat three actual Web services which support both of the IPv4 Internet and the IPv6 Internet. The results show that the effect of QoS degradation caused by 6to4 on Web usability depends on the Web service. According to Web service, QoE degradation caused by 6to4 does not always occur.
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Study on Appropriate TCP Congestion Control for WebQoE Improvement 査読あり
Masaaki Shibata,Yoshihiro Ito
Proceedings of IEICE Workshop on Internet Architecture and Applications 141 - 145 2015年11月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス） 出版者・発行元：IEICE
This paper studies an appropriate TCP congestion control for a Web service from a user’s point of view by experiment. In the experiment, trying some congestion controls on both of a Web server and a Web client, the
authors assess QoE for a Web service. This paper considers a Web shopping service as a target one and uses three major congestion controls: TCP Cubic, TCP Vegas and TCP Illinois. The experimental results show that the effect
of the difference between the three congestion controls is not remarkable. However, in some case, when a Web client adopts TCP Vegas, the QoE for the Web service can be degraded. They confirm that the difference between congestion controls on the Web client can also affect QoE for the Web server.
