Panel Sessions

Panel Title: Finding Solutions to the Problems of Evolution and Migration Path for a Mobile Planet

Wired and Wireless communications which include Cellular and Optical networks are the technologies that have dominated recent developments in central Asia. Apart from land lines, central Asia’s geographical environment attracts satellites to operate along Silk Roads and to provide coverage in the regional areas. The ubiquitous connectivity paradigm continues forward towards total convergence as music, still images, video, WiFi, LBS and mobile TV become standard features on smart handsets. Mobile phones, PDAs, personal media players and other handheld devices provide the ability to access information and run even the most media-rich applications anywhere, any time, on any device. As designers integrate more features into smart handsets, they are finding another innovation challenge. Most of the high-end terminals only cater to the top 10% of the customer need pyramid. 70% of the people in the developing countries have diverse requirements that require us to re-define the purpose of mobility towards enabling connectivity to transform their lives. This is the application space where special function devices and software architectures are adding value to high volume low-cost handset designs to aid the humungous growth in the developing world. Third generation (3G) mobile cellular systems are available for higher capacity. Design and developments beyond 3G are aiming not only for higher capacity in terms of number of users but also for higher data rate applications. The issue becomes the agenda of debate for both academia and industry around the world. This panel, which consists of international researchers will discuss various important issues related to 3G and beyond. Fourth Generation (4G) wireless communications systems have been proposed because of its difficulty of Code Division Multiple Access (CDMA) technologies to achieve higher data rates and therefore, satisfy continuously ever increasing demand for data rates and bandwidth to meet multi-media user's requirements. With ever increasing in data rates, the output power of the air-interface must be increased and or the size of the cell has to be decreased to accommodate higher rates. These implementations introduce difficulties. 4G communications networks may require distributed architecture, End-to-End Internet Protocol (IP), and peer-to-peer networking. Coverage and Capacity could be adaptive and dynamically accommodate changes in user's patterns. Users could move automatically away from the congested routes to allow network to dynamically and automatically self-balance itself. Panel discussion also addresses the issues of security in the mobile and wireless IP. IP is dominating the next generation mobile and wireless technologies. Its security is becoming a major concern.

Panel members:

Professor, Dr. Nargiza Usmanova, TUIT, Uzbekistan
Professor, Dr. Rifat R. Ibraimov, TUIT, Uzbekistan
Professor, Dr. Vincent Guyot, LIP6 and ENST/France Telecom, France
Professor, Dr. Alexander Markhasin, Siberian State University of Telecommunications and Information Sciences, Novosibirsk, Russia
Professor, Dr. Hakan Deliç, Bogaziçi University, Istanbul, Turkey

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Panel Title: Compact Waveguide Devices and Switching Implementation in Optical Network

With the advent of optical technologies, most notably optical networks with wavelength division multiplexed (WDM) transmission having several wavelengths per fiber as channels, produce much interest in solving the huge demand on the internet with ever increasing traffic. Transmission rate of a channel is currently limited to 40 Gbps. Now-a-day the implementation of IP (Internet Protocol) over DWDM are growing and there is a gradual migration from the existing IP over ATM (Asynchronous Transfer Mode) and over SONET (Synchronous Optical Network). With the techniques of GMPLS (generalized version of Multi Protocol Label Switching) and OXC (optical cross connect) IP packets are directly connected to each other into wavelength channels. The signal with O-E-O (optical to electrical and electrical to optical) conversion produces a delay where as the signal without O-E-O reduces delay time and thus produces additional network robustness. Theoretically, the data rates could be pushed somewhere between 25-75 terabits per second. In some networks, IP routers are connected through SONET interfaces and DWDM links. The router and routing techniques with OXC require switches and their implementation. Other than Opto-electronic switches, the optical switches are used directly for routing without converting the optical signal to electrical signal. The panel discussions will be focused on different implementation methods of optical switches, such as MEMS, liquid crystals, bubble, waveguide type TO (Thermo-optic) and EO (Electro-optic), with high index contrast compact devices, wavelength routing switches (AWG and tunable ?), semiconductor optical Phased Array, optical RAM, etc. and suggestions will be proposed for the technologies considering different available materials according to the specific need of the switches and optical devices in view of their size, capacity, speed, scalability, cost and reliability in DWDM systems. Maturity and potentiality of Optical Cross-Connects (OXC), Optical Circuit Switching (OCS), Optical Packet Switching (OPS) and Optical Burst Switching (OBS) will be discussed. Optical level switching (OLS) offers interoperability between OPS, OBS, and OCS and demonstrates successfully in Global optical network for multi-service applications. Unlike electronic packet switching routers, optical routers can exploit many wavelengths to reduce the buffer sizes. The technological aspects of optical switching and the overview of advances carried out in the Network of Excellence (NoE) e-Photon/ONe+ also will be addressed in panel discussions.

Panel members:

Panel char: Professor Dr. Alok Kumar Das, Jadavpur University, Kolkata,India