Faculty Profiles - KAWAGUCHI, Nobuo

UbiComp and ISWC 2015 - Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the Proceedings of the 2015 ACM International Symposium on Wearable Computers

A pedestrian passage detection method by using spinning magnets on corridors

Takeshima C.

Design and implementation of algorithm for estimation of elevator travel distance using smartphone accelerometer

Martinez A.

Privacy protection in WiFi-based location estimation

Peng Z.

2014 7th International Conference on Mobile Computing and Ubiquitous Networking, ICMU 2014

International workshop on human activity sensing corpus and its application (HASCA2014)

Kawaguchi N.

UbiComp 2014 - Adjunct Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing

Pedestrian dead reckoning based on human activity sensing knowledge

Murata Y.

UbiComp 2014 - Adjunct Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing

Gate-passing detection method based on WIFI significant points

Kaji K.

Lecture Notes in Engineering and Computer Science

HASC-IPSC: Indoor pedestrian sensing corpus with a balance of gender and age for indoor positioning and floor-plan generation researches

Kaji K.

UbiComp 2013 Adjunct - Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing

Chairs' summary/proposal for international workshop on human activity sensing corpus and its application (HASCA2013)

Kawaguchi N.

UbiComp 2013 Adjunct - Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing

Crowdsourcing of Location based Information and OpenData Integration Invited International conference

Nobuo Kawaguchi

Japanese-French Workshop on the Internet for the Future Society 2023.6.4

Scalable QoS for XCAST Using Differentiated Services Architecture International conference

Abade Odira Elisha, Kaji Katsuhiko, Kawaguchi Nobuo

Information Processing Society of Japan

Event date： 2013

Language：English Presentation type：Oral presentation (general)

Country：Japan

Explicit multiunicast (XCAST) has been proposed as a multicasting scheme with complementary scaling properties which can solve the scalability problems of conventional IP Multicast. XCAST is suitable for videoconferencing, online games and IPTV. This paper deals with QoS provisioning in XCAST networks using Differentiated Services (DiffServ). We show that integration of DiffServ in XCAST is a non-trivial problem due to inherent architectural differences between XCAST and DiffServ. We then propose a scheme called QS-XCAST that uses dynamic DSCPs to adapt to the heterogeneity of receivers in an XCAST network. We also provide an algorithm for harmonizing the receiver-driven and sender-driven QoS approaches between XCAST and DiffServ thereby determining the correct DSCP-PHB for all links in an XCAST network. By simulating using OMNeT++ we evaluate QS-XCAST using four metrics: throughput, average per-hop-delay, link utilization and forwarding fairness to other traffic in the network. Our solution eliminates DSCP confusion and collusion attack problems to which naive XCAST QoS provisioning is vulnerable. It also offers a more efficient bandwidth utilization, better forwarding fairness and less traffic load compared to the existing XCAST.

External device session initiation framework using mobile phone connection information

Asai T.

Asian Internet Engineeering Conference, AINTEC 2012

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