September 2016 Issue
Topics
Designing high performance network communications
Professor Eiji Oki
Department of Communication Engineering and Informatics
"Research in my group covers optical and IP networks, and other such communications system technology for applications such as large bandwidth high definition television," says Eiji Oki. "Our ultimate aim is to devise cost-effective, high speed, and high quality networking technologies."
One of the many research themes being pursued by researchers at the Oki Lab is the development of reliable and robust networking technology to mitigate network failures that would have adverse effects on businesses as well as society in general.
In a recent paper, Oki and coworkers reported on their approach to reduce energy consumption in communications networks that implement over capacity to prevent failure during unpredictable peak hours traffic--the so-called 'traffic matrix' [1]. Their solution to save power in communications networks where large volumes of traffic cannot be predicted accurately is a "green and robust optimization scheme that is based on hose model with bound of link traffic (HLT)." Notably, HLT does not require precise information about traffic, instead it is defined in terms of the "total volume of traffic outgoing and incoming at each node and the total traffic at each link". This research is expected to improve the power efficiency and robustness of communications networks.
References
- Ihsen Aziz Ouédraogo and Eiji Oki, A Green and Robust Optimization Strategy for Energy Saving Against Traffic Uncertainty, IEEE J. Selected Areas Comm. vol. 34, no. 5, 1405-1416, May 2016.
Further information
Eiji Oki Laboratory
https://oki.ice.uec.ac.jp/english/index_e.shtml
