研究者詳細 - 伊藤　嘉浩

論文 - 伊藤　嘉浩

分割表示 127 件中 61 - 80 件目／全件表示 >>

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

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.

DOI： 10.1109/LANMAN.2017.7972154

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.

DOI： 10.1109/PlatCon.2017.7883729

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

DOI： 10.14923/transcomj.2016JBP3029

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

DOI： 10.1541/ieejeiss.136.1

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.

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.

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.

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

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.

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.

DOI： 10.1541/ieejeiss.136.493

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.

Comparison of WebQoE between 6to4 and Teredo 査読あり国際誌

Tomohiko Mizoguchi,Yoshihiro Ito

Proceedings of 2015 International Conference on Information and Communication Technology Convergence (ICTC) 576 - 578 2015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）

This paper compares two methods of IPv4/IPv6 coexistence from the point of view of WebQoE (Quality of Experience for Web services) by experiment. The authors adopt 6to4 and Teredo as methods of the coexistence. Almost all of the methods of the coexistence degrade QoS(Quality of Service) owing to their overheads. Consequently, they can also degrade WebQoE. However, the difference of the effect of QoS deterioration on QoE is not clarified. This paper evaluates QoS and WebQoE under both of the environment with 6to4 and that with Teredo. In the experiment, the authors utilize three actual Web services. From the experimental results, the authors confirm that both of 6to4 and Teredo degrade QoS but find the difference between effect on WebQoE with 6to4 and that of Teredo depends on Web services.

DOI： 10.1109/ICTC.2015.7354614

Development of Wireless LAN Base Station with Web-QoE Based QoS Control 査読あり国際誌

Shiho Asano,Yoshihiro Ito

Proceedings of 2015 International Conference on Information and Communication Technology Convergence (ICTC) 5 - 7 2015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

control and evaluate its performance by experiment. By adapting a statistical characteristic of Web service traffic to QoS control, the base station can keep high QoE without worsening of congestion over wireless LAN; it is implemented by adopting two technologies: OpenFlow and WMM. 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： 0.1109/ICTC.2015.7354481

Study on effect of congestion control of multipath TCP on Web-QoE 査読あり国際誌

Yasuomi Muraki,Yoshihiro Ito

Proceedings of 2015 IEEE 4th Global Conference on Consumer Electronics (GCCE) 52 - 53 2015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 effect of congestion control of Multipath TCP(MPTCP) on QoE by experiments for Web services. In the experiment, the authors treat three congestion controls of MPTCP: TCP NewReno, TCP Vegas and MPTCP LIA and target two actual Web services; they utilize the Web usability as QoE parameters. The experimental results show that the difference of congestion control can affect QoS but cannot affect Web-QoE very much.

DOI： 10.1109/GCCE.2015.7398634

Effect of QoS degradation on Parallax Effect in Web Services 査読あり国際誌

Yuna Adachi, Yoshihiro Ito

Proceedings of 2015 IEEE 4th Global Conference on Consumer Electronics (GCCE) 1 - 2 2015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 an effect of QoS degradation on the parallax effect for Web services by experiment. In the experiment, the authors consider 23 actual Web services and assess QoE of them. The experimental results show that, even if QoS is deteriorated, the parallax effect can be maintained for some services. Moreover, the authors study the characteristics of such the services and find common characteristics of them. From these results, the authors suggest that if we make Web pages with the parallax effect properly, they can become tolerant to QoS degradation.

DOI： 10.1109/GCCE.2015.7398639

Assessment of Sense of Presence for 3D IP Phone Service Under Actual Environments 査読あり国際誌

Minoru Tsubota,Yoshihiro Ito

Proceedings of 2015 IEEE 4th Global Conference on Consumer Electronics (GCCE) 3 - 4 2015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 sense of presence for the 3D IP phone service with the binaural recording by experiments under actual environments. In the experiments, the authors consider seven actual environments where we meet in our daily life. The experimental results show that, under the actual environments, the 3D IP phone service can give higher sense of presence than a monaural IP phone even if it utilize a low bit-rate coding. Consequently, the authors confirm the practicality of our 3D IP phone service.

DOI： 10.1109/GCCE.2015.7398650

Study of Web Service Estimation Using Only Ethernet Frame Header or IP Packet Header 査読あり国際誌

Daichi Sugita,Yoshihiro Ito

Proceedings of 2015 IEEE 4th Global Conference on Consumer Electronics (GCCE) 93 - 94 2015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 proposes a Web service estimation method by using only Ethernet frame header or IP packet header and confirms effectiveness of the method by experiment. Within the frame header of packet header, the proposed method uses only information that is not encrypted, such as the length. Therefore, the method can be applied to secure communication. This paper does experiments for 18 Web services, and confirms the effectiveness of the proposed method.

DOI： 10.1109/GCCE.2015.7398648

A Method of Evaluating Effect of QoS Degradation on Multidimensional QoE of Web Service with ISO - based Usability 査読あり

Daisuke Yamauchi, Yoshihiro Ito

International Journal of Computer Networks & Communications 7 ( 1 ) 19 - 33 2015年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.5121/ijcnc.2015.7102

A Method of QoE Management in Online Shopping Web Services with TCP Variables 査読あり国際誌

Daisuke Yamauchi, Yoshihiro Ito,Toru Tahara

Internetworking Indonesia Journal 2015年01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：IIJ

For service level agreement over company networks or community ones, this paper proposes a simple method of QoE evaluation with objective TCP variables in an online shopping Web service for SLM. It also confirms the effectiveness by experiment. In this experiment, the authors measure 31 variables concerned with TCP performance and assess user’s satisfaction as a QoE parameter for three actual shopping Web services. Then, to clarify relationship between the user’s satisfaction and the objective TCP variables, they utilize multivariate statistics: the principal component analysis and the multiple regression analysis. The experimental results show that the user-satisfaction can be easily estimated with three or four objective TCP variables in the online shopping service.

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