Tomoyuki OHTA


A Data Transfer Scheme Based on Autonomous Clustering with Positions and Moving Direction of Vehicles for VANETs
Yasuharu OHTA  Tomoyuki OHTA  Yoshiaki KAKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/09/01
Vol. E95-B  No. 9  pp. 2728-2739
Type of Manuscript: Special Section PAPER (Special Section on Emerging Technologies and Applications for Ad Hoc and Wireless Mesh Networks)
Category: 
Keyword: 
vehicular ad-hoc networksclusteringepidemic routingpositioning information
  Summary |  Full Text:PDF (1.8MB)

Improvement of Dependability against Node Capture Attacks for Wireless Sensor Networks
Eitaro KOHNO  Tomoyuki OHTA  Yoshiaki KAKUDA  Masaki AIDA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2011/01/01
Vol. E94-D  No. 1  pp. 19-26
Type of Manuscript: Special Section PAPER (IEICE/IEEE Joint Special Section on Autonomous Decentralized Systems Technologies and Their Application to Networked Systems)
Category: Assurance
Keyword: 
wireless sensor networkssecuritynode capture attacksecret sharing schemekey refreshment
  Summary |  Full Text:PDF (451.6KB)

A Hierarchical Geographical Routing with Alternative Paths Using Autonomous Clustering for Mobile Ad Hoc Networks
Hiroshi NAKAGAWA  Satoshi TESHIMA  Tomoyuki OHTA  Yoshiaki KAKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/01/01
Vol. E94-B  No. 1  pp. 37-44
Type of Manuscript: Special Section PAPER (IEICE/IEEE Joint Special Section on Autonomous Decentralized Systems Technologies and Their Application to Networked Systems)
Category: Assurance
Keyword: 
ad hoc networksautonomous clusteringgeographical routing
  Summary |  Full Text:PDF (1.1MB)

New Safety Support System for Children on School Routes Using Mobile Ad Hoc Networks
Atsushi ITO  Yoshiaki KAKUDA  Tomoyuki OHTA  Shinji INOUE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/01/01
Vol. E94-B  No. 1  pp. 18-29
Type of Manuscript: Special Section PAPER (IEICE/IEEE Joint Special Section on Autonomous Decentralized Systems Technologies and Their Application to Networked Systems)
Category: Assurance
Keyword: 
mobile ad hoc networksafety support system for childrenBluetoothmobile phone
  Summary |  Full Text:PDF (2.2MB)

An Equivalent Division Method for Reducing Test Cases in State Transition Testing of MANET Protocols
Hideharu KOJIMA  Juichi TAKAHASHI  Tomoyuki OHTA  Yoshiaki KAKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/03/01
Vol. E92-B  No. 3  pp. 794-806
Type of Manuscript: Special Section PAPER (Special Section on Ad Hoc and Mesh Networking for Next Generation Access Systems)
Category: 
Keyword: 
state transition testingmobile ad hoc network protocolsnetwork protocol testing
  Summary |  Full Text:PDF (416.2KB)

A Hierarchical Multicast Routing Using Inter-Cluster Group Mesh Structure for Mobile Ad Hoc Networks
Izumi YAMAMOTO  Kazuki OGASAWARA  Tomoyuki OHTA  Yoshiaki KAKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/01/01
Vol. E92-B  No. 1  pp. 114-125
Type of Manuscript: Special Section PAPER (Special Section on Networking Technologies for Dependable Networks)
Category: 
Keyword: 
ad hoc networksmulticast routing
  Summary |  Full Text:PDF (747.2KB)

A Hybrid Greedy Routing with Location Information for Mobile Ad Hoc Networks
Hiroshi NAKAGAWA  Kazuyuki NAKAMARU  Tomoyuki OHTA  Yoshiaki KAKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/09/01
Vol. E91-B  No. 9  pp. 2806-2817
Type of Manuscript: Special Section PAPER (IEICE/IEEE Joint Special Section on Autonomous Decentralized Systems Theories and Application Deployments)
Category: Ad Hoc Networks
Keyword: 
ad hoc networksgeographical routing
  Summary |  Full Text:PDF (836.4KB)

Route-Split Routing Resilient to Simultaneous Failure for Mobile Ad Hoc Networks
Tsuyoshi MIZUMOTO  Tomoyuki OHTA  Yoshiaki KAKUDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/07/01
Vol. E91-A  No. 7  pp. 1625-1633
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
ad hoc networksroutingsimultaneous failure
  Summary |  Full Text:PDF (472.9KB)

Development of a Topology Controllable Testing Environment for Mobile Ad Hoc Network Software
Atsushi KAWANO  Tomoyuki OHTA  Kaori MAEDA  Kenji ISHIDA  Yoshiaki KAKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/11/01
Vol. E90-B  No. 11  pp. 3104-3107
Type of Manuscript: Special Section LETTER (Special Section on Next Generation Network Management)
Category: 
Keyword: 
mobile ad hoc networkssoftware testing
  Summary |  Full Text:PDF (292.8KB)

A Dynamic Index Allocation Scheme for Data Retrieval and Provision in Peer-to-Peer Networks
Atsushi ITO  Tomoyuki OHTA  Kouichi MITSUKAWA  Yoshiaki KAKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/09/01
Vol. E89-B  No. 9  pp. 2336-2346
Type of Manuscript: Special Section PAPER (Special Section on Networking Technologies for Overlay Networks)
Category: 
Keyword: 
peer-to-peer systemdata retrievaldata provisionindex allocation
  Summary |  Full Text:PDF (1MB)

An Autonomous Clustering-Based Hierarchical Multicast Routing for Mobile Ad Hoc Networks
Tomoyuki OHTA  Toshifumi KAWAGUCHI  Yoshiaki KAKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/12/01
Vol. E88-B  No. 12  pp. 4451-4461
Type of Manuscript: Special Section PAPER (IEICE/IEEE Joint Special Section on Autonomous Decentralized Systems)
Category: Ad hoc, Sensor Network and P2P
Keyword: 
ad hoc networksclusteringmulticast routing
  Summary |  Full Text:PDF (1.4MB)

A Class of Hierarchical Routing Protocols Based on Autonomous Clustering for Large Mobile Ad Hoc Networks
Tomoyuki OHTA  Munehiko FUJIMOTO  Ryotaro ODA  Yoshiaki KAKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/09/01
Vol. E87-B  No. 9  pp. 2500-2510
Type of Manuscript: Special Section PAPER (Special Section on Networking Technologies for Mobile Internet Systems)
Category: Ad Hoc Network
Keyword: 
ad hoc networksclusteringhierarchical routing
  Summary |  Full Text:PDF (1.4MB)

A Hierarchical Routing Protocol Based on Autonomous Clustering in Ad Hoc Networks
Tomoyuki OHTA  Munehiko FUJIMOTO  Shinji INOUE  Yoshiaki KAKUDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/10/01
Vol. E86-B  No. 10  pp. 2902-2911
Type of Manuscript: Special Section PAPER (IEICE/IEEE Joint Special Issue on Assurance Systems and Networks)
Category: Mobile Ad Hoc Networks
Keyword: 
ad hoc networkshierarchical routingclusteringautonomous decentralized systemsmobile computing
  Summary |  Full Text:PDF (465.1KB)

An Adaptive Multihop Clustering Scheme for Ad Hoc Networks with High Mobility
Tomoyuki OHTA  Shinji INOUE  Yoshiaki KAKUDA  Kenji ISHIDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/07/01
Vol. E86-A  No. 7  pp. 1689-1697
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
ad hoc networksclusteringautonomous decentralized systemsmobile computing
  Summary |  Full Text:PDF (307.6KB)