Yoshitaka Shibata

Publications (91)0 Total impact

• Article: Transmission control methods with multihopped environments in cognitive wireless networks

  Noriki Uchida, Kazuo Takahata, Yoshitaka Shibata
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  ABSTRACT: Cognitive wireless network (CWN) is expected as one of the most efficient transmission methods to solve today’s wireless problems like the lack of wireless bands or the efficient usage of limited wireless resources. However, CWN have not established effective transmission methods considered with QoS or user-oriented transmission methods. In this paper, selective transmission control method in CWN considering with end-to-end QoS based on user policies is proposed. First, at the observation stage, the physical data such as electric field strength, bit error rate, jitter, latency, packet error rate, and throughput are observed. Then, at the decision stage, analytic hierarchy process (AHP) with user policy is applied for decision making process with those parameters. Finally, the action stage, one of the suitable links is chosen and changed links and networks. Also, the route selecting method is proposed based on extended AODV protocols. When route changes come to need, considerable wireless routes are listed by AODV protocol including network conditions. Then, the following three methods are used for route selection: (1) Route selection so that Maximizing End-to-End network conditions among all of the routes. (2) Route selection so that applying End-to-End AHP selection among all of the routes. (3) Route selection so that using min-max methods for the results of the policy based AHP. In our simulation, ns2 is used for the computational results to the effectiveness of the suggested transmission methods in CWNs. The results showed the effectiveness of the proposed methods. KeywordsCognitive wireless network-QoS-AHP-Extended AODV
  Journal of Ambient Intelligence and Humanized Computing 04/2012; 1(4):249-257.
• Conference Proceeding: User Policy Based Link and Route Selection Methods for Never Die Network.

  Noriki Uchida, Kazuo Takahata, Yoshitaka Shibata
  2011 International Conference on Broadband, Wireless Computing, Communication and Applications, BWCCA 2011, Barcelona, Spain, October 26-28, 2011; 01/2011
• Conference Proceeding: Optimal Route Selection Method with Satellite System for Cognitive Wireless Network in Disaster Information Network.

  Noriki Uchida, Goshi Sato, Kazuo Takahata, Yoshitaka Shibata
  25th IEEE International Conference on Advanced Information Networking and Applications, AINA 2011, Biopolis, Singapore, March 22-25, 2011; 01/2011
• Conference Proceeding: Disaster Information System from Communication Traffic Analysis and Connectivity (Quick Report from Japan Earthquake and Tsunami on March 11th, 2011).

  Noriki Uchida, Kazuo Takahata, Yoshitaka Shibata
  The 14th International Conference on Network-Based Information Systems, NBiS 2011, Tirana, Albania, September 7-9, 2011; 01/2011
• Conference Proceeding: Never Die Network Extended with Cognitive Wireless Network for Disaster Information System.

  Noriki Uchida, Kazuo Takahata, Yoshitaka Shibata, Norio Shiratori
  International Conference on Complex, Intelligent and Software Intensive Systems, CISIS 2011, June 30 - July 2, 2011, Korean Bible University, Seoul, Korea; 01/2011
• Conference Proceeding: Cognitive Wireless Network for Large Scale Disaster.

  Noriki Uchida, Kazuo Takahata, Yoshitaka Shibata
  2011 Third International Conference on Intelligent Networking and Collaborative Systems (INCoS), Fukuoka, Japan, November 30 - Dec. 2, 2011; 01/2011
• Source

  Available from: InTech

  Chapter: MidField: An Adaptive Middleware System for Multipoint Digital Video Communication

  Koji Hashimoto, Yoshitaka Shibata
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  ABSTRACT: MidField System is a Middleware for Flexible and interactive environment in long distance. We can communicate with each other on computer networks by using the system. Supported DV and HDV video formats enable us to get high quality digital video images for interactive communications, and the system is able to construct audio-video communication sessions according to users' communication environments. We are always improving the system through many practical audio-video communications. If we can use a HDMI (High-Definition Multimedia Interface) capture card that is able to use as a DirectShow's source filter, the latest implementation enables us to communicate each other by full HD video streams. In our ordinary communication, to use high quality digital video streams has become easier than before. However to use the video streams in multipoint communications is not always easy. Even if we have communication environments enough to use high quality digital video streams, the preparations for audio-video communications are often hard works. To modulate levels of each location's microphones and speakers takes much time always. Trouble shootings for burst packet loss cause often us great distress. For settings of communication nodes on each location, we often need cell phones. Through practical communications, we have many problems to be solved in multipoint digital video communications. In this chapter, the idea for integrating IP multicast sessions and the implementation have been described. The current implementation of MidField System has many useful functions for audio-video streaming as a multipoint communication system or a middleware, and enables a wide variety of audio-video communications such as high quality digital video distributions, distance educations, remote lessons and customized communication systems. On the other hand, MidField System had realized a dynamic session configuration method, but unfortunately in many cases communication systems are restricted to use IP multicast. Now, we are trying to design and develop a new adaptive multipoint session configuration method as a future work, which will be able to improve our communication environments.
  02/2010; , ISBN: 978-953-7619-70-1
• Conference Proceeding: Min-Max Based AHP Method for Route Selection in Cognitive Wireless Network.

  Noriki Uchida, Kyugen Takahata, Xiaolin Zhang, Kazuo Takahata, Yoshitaka Shibata
  The 13th International Conference on Network-Based Information Systems, NBiS 2010, Takayama, Gifu, Japan, 14-16 September 2010; 01/2010
• Conference Proceeding: Proposal of Transmission Control Methods with Multihopped Environments in Cognitive Wireless Networks.

  Noriki Uchida, Kazuo Takahata, Yoshitaka Shibata
  24th IEEE International Conference on Advanced Information Networking and Applications Workshops, WAINA 2010, Perth, Australia, 20-13 April 2010; 01/2010
• Conference Proceeding: Large Scale Disaster Information System Based on P2P Overlay Network.

  Wei Kang, Hiroaki Yuze, Kazuo Takahata, Yoshitaka Shibata
  CISIS 2010, The Fourth International Conference on Complex, Intelligent and Software Intensive Systems, Krakow, Poland, 15-18 February 2010; 01/2010
• Conference Proceeding: User Policy Based Transmission Control Method in Cognitive Wireless Network.

  Noriki Uchida, Yoshitaka Shibata, Kazuo Takahata
  Computational Science and Its Applications - ICCSA 2010, International Conference, Fukuoka, Japan, March 23-26, 2010, Proceedings, Part III; 01/2010
• Conference Proceeding: Selective Routing Protocol for Cognitive Wireless Networks Based on User's Policy.

  Noriki Uchida, Goshi Sato, Kazuo Takahata, Yoshitaka Shibata
  30th IEEE International Conference on Distributed Computing Systems Workshops (ICDCS 2010 Workshops), 21-25 June 2010, Genova, Italy; 01/2010
• Conference Proceeding: Wireless Link Selection by Time Transitional AHP Based on Emergent Policy in Cognitive Wireless Network.

  Noriki Uchida, Kazuo Takahata, Yoshitaka Shibata
  Proceedings of the Fifth International Conference on Broadband and Wireless Computing, Communication and Applications, BWCCA 2010, November 4-6, 2010, Fukuoka Institute of Technology, Fukuoka, Japan (In conjunction with the 3PGCIC-2010 International Conference); 01/2010
• Conference Proceeding: Experimental Variables of Urban Disaster Information System Influenced by Moving Object.

  Kazuo Takahata, Noriki Uchida, Xiaoliang Wang, Takashi Miura, Yan Liu, Hiroaki Yuze, Yoshitaka Shibata
  The 13th International Conference on Network-Based Information Systems, NBiS 2010, Takayama, Gifu, Japan, 14-16 September 2010; 01/2010
• Conference Proceeding: Cognitive Wireless Network by Time Transitional AHP Based on Emergency Policy.

  Noriki Uchida, Xiaolin Zhang, Kyugen Takahata, Kazuo Takahata, Yoshitaka Shibata
  The 13th International Conference on Network-Based Information Systems, NBiS 2010, Takayama, Gifu, Japan, 14-16 September 2010; 01/2010
• Conference Proceeding: Proposal of Never Die Network with the Combination of Cognitive Wireless Network and Satellite System.

  Noriki Uchida, Kazuo Takahata, Yoshitaka Shibata
  The 13th International Conference on Network-Based Information Systems, NBiS 2010, Takayama, Gifu, Japan, 14-16 September 2010; 01/2010
• Conference Proceeding: Design of a Cooperative Video Streaming System on Community Based Resource Sharing Networks.

  Yasuhiro Kawano, Koji Hashimoto, Yoshitaka Shibata
  3PGCIC 2010, International Conference on P2P, Parallel, Grid, Cloud and Internet Computing, Fukuoka Institute of Technology, Fukuoka, Japan, 4-6 November 2010; 01/2010
• Conference Proceeding: Dynamic Network Configuration Method Based Cognitive Radio LANs for Disaster Information System.

  Goshi Sato, Noriki Uchida, Kazuo Takahata, Yoshitaka Shibata
  24th IEEE International Conference on Advanced Information Networking and Applications Workshops, WAINA 2010, Perth, Australia, 20-13 April 2010; 01/2010
• Conference Proceeding: Proposal of Transmission Control Methods with User Oriented Environments in Cognitive Wireless Networks.

  Noriki Uchida, Yoshitaka Shibata, Kazuo Takahata
  CISIS 2010, The Fourth International Conference on Complex, Intelligent and Software Intensive Systems, Krakow, Poland, 15-18 February 2010; 01/2010
• Conference Proceeding: Disaster Communication Method Using Electromagnetic Wave Leaking from Wireless LAN System to Outdoors.

  Kazuo Takahata, Takashi Miura, Noriki Uchida, Yoshitaka Shibata
  24th IEEE International Conference on Advanced Information Networking and Applications Workshops, WAINA 2010, Perth, Australia, 20-13 April 2010; 01/2010