Beyond 3G: Evolution of mobile networks and services

Wednesday, April 14th, 2004 at 6:00 PM

TI Auditorium


Speaker: Dr. Minoru Etoh

Bio: Minoru Mick Etoh started his career as a research engineer at the the Central Research Laboratories of Matsushita Electric in 1985. In 90's, he was leading an image communication research team and participated in MPEG-4 standardization. He joined the Multimedia Laboratories of NTT DoCoMo, Inc., Yokosuka in May 2000. He was Director of Signal Processing at NTT DoCoMo Laboratory, at which he was involved in multimedia communication research and development. He was simultaneously serving as Adjunct Lecturer of Osaka University.

In 2002, Dr. Etoh was promoted to President & CEO of DoCoMo Communications Laboratories USA, Inc., where he is now conducting several research groups in charge of mobile network architecture design, cryptography, terminal software, audio, speech and video coding technologies, and media delivery over mobile networks. He is also Visiting Professor of Nara Institute of Science and Technology.

Dr. Minoru Etoh received his B.E. and M.S.E.E. from Hiroshima University Ph.D. degree from Osaka University, in 1983, 1985 and 1993 respectively. He also received the 1995 Best Paper Award of IEICE Japan, the 14th Telecom System Technology Prize of the Telecommunications Advancement Foundation(1998), the 7th Sakai Commemorative Prize of IPSJ(1998), and the 39th Achievement Award of IEICE (2002). He is a member of IEEE, IEICE, and IPSJ.

Title: Beyond 3G: Evolution of mobile networks and services

Abstract: We discuss research directions toward the next generation mobile networks. As for the wireless access technologies, (1)in Japan, the focus is on pushing the envelope and trying to get extremely broadband wireless, broader than even most wired broadband in the US. Hence the DoCoMo works on a very complex physical layer that gets 100 Mbps. (2) In the US, the focus is on getting a physical layer and media access that is a much better fit with IP than the current 3G protocols, but can deliver over a wide area and to faster moving vehicles, which 802.11 can't. (3) In Europe, the focus is on getting value out of the existing 3G wireless access protocols, by working on seamless intertechnology handover between GPRS and 802.11. They are uninterested in any new wireless protocol work. To summarize the three directions, it is a commonly stated proposition that the next generation mobile network will operate on Internet technology combined with various access technologies such as wireless LAN, and run at speeds ranging from 100 Mbps in cell-phone networks to 1 Gbits in hot-spot networks(i.e., the definition in ITU-R Vision). The point of this presentation, however, is that the wireless technologies implied by this rather limited, technical definition are absolutely necessary but not sufficient to provide the required leap into a new generation. In order to produce the significant functional leap required for the next generation, full and seamless convergence of mobile networks with the Internet is essential. Moreover the efficacy (and therefore value) of the new network must exceed that of the current Internet. This will be achieved with enhanced capabilities such as mobility support, realtime service provision, reliable security and so on. We also touch upon media delivery technologies, which are necessary to fill the gap between wired and wireless networks, through the examination of existing mobile networks, commercialized or standardized transport and coding technologies.