Keynote Speakers
June 1st : 9:00-10:00 : Memorial Hall (10F):
Dr. Hiroshi Harada
National Institute of Information and Communications Technology (NICT), Japan
Title: Amphibia Networks -A Dependable Wireless and Wired Integrated Social Network Infrastructure-
Abstract:
By taking 10 years, the R&D on cognitive radio provides many significant results and several new standardizations and businesses are starting and it is not far future to see actual commercial products.
Now it is a time to consider next step. The important discussion topic is how to integrate cognitive wireless network with wired network and how to handle multiple protocols in wired and wireless network. Also we need to consider how to handle multiple services that have their own QoS and how to realize dependable operation in the case of unexpected situations such as earth quake and so on.
To cope with the issues, I propose a concept regarding dependable wireless and wired integrated social network infrastructure, named Amphibia network. In the Amphibia networks, all radio base station and access point needs to have functions of re-configurability and cognitive, and the network has multiple operation capability by using virtualization technologies.
This presentation will show the background, the concept, business model, initial feasibility study results.
June 2nd : 9:00-10:00 : Memorial Hall (10F):
Prof. Vahid Tarokh
Harvard University, USA
Title: Information Theoretic Fundamentals, Regulatory issues, Physical Limitations and the Future of Opportunistic Transmission
Abstract:
I will discuss the current regulatory issues for opportunistic transmission and argue that they are very conservative. Then I overview information theoretic limits of cognitive transmission and discuss that they may be hard to achieve in some scenarios given the current physical limitation. Finally, I will speculate given these facts on the future of cognitive Radios.
June 3rd : 9:00-10:00 (1st presentation) : Memorial Hall (10F):
Mr. Yasuo Tawara
Director of Land Mobile Communications Division, Ministry of Internal Affairs and Communications (MIC), JAPAN
Title: Outlook and Issues of Radio Use - Policy for Realizing Wireless Broadband -
Abstract:
It is foreseen that new systems and services incorporating innovative radio use technologies will come into the market, and the quality and quantity of radio wave use will increase dramatically. Anticipated at the same time is the emergence of new applications developed to contend with such wide-ranging social issues as the declining birthrate and growing proportion of elderly people, environmental problems, local revitalization, and disaster management. With these in mind, the outlook and issues of radio wave use will be discussed together with international trends and the progress being made in radio use technologies.
June 3rd : 9:00-10:00 (2nd presentation) : Memorial Hall (10F):
Dr. Yasuhiko Ito
KDDI R&D Laboratories, Japan
Member of Radio Regulation Board of ITU
Title: To be or not to be “cognitive”
Abstract:
Wireless network is now considered basic infrastructure for our life. However, amount of data traffic has dramatically increased after the introduction of smartphones. Now most cellular operators are suffering from the shortage of spectrum. It is certain that this tendency is further accelerated by the introduction of mobile broadband that may carry high quality video.
What is going to happen if this tendency continues? It is obvious that enough frequency spectrum to fulfill the demand may not be obtained. The speaker is now serving as Member of the Radio Regulation Board of ITU and is facing most difficult interference cases happening. Although in the present cases appearing in the Board, most difficult cases occur in the area of satellite communications and in broadcasting area since they cover wider areas. However, it is anticipated that if assignment of wideband frequency is expanding rapidly the interference problem will continue to grow and will be extended to mobile communication area.
In order to solve this shortage of spectrum and to reduce interference situation, cognitive radio is considered a powerful method to dynamically and effectively find capacity needed for each instant. Other possibilities are to use micro cell approach and/or off-loading traffic to wire lines. In this speech requirements will be stated to make cognitive radio more effective and reliable in the practical application.
