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System Testing and Interoperability - Theory and Applications

David Lee

Vice President

Bell Labs Research China

15F, Aero Space Great Wall Building, No.30, Hai Dian Nan Lu, Beijing, China

 

Abstract
We first discuss communication system conformance testing. We describe several fundamental problems, their complexity and solutions. We report industrial applications of the developed techniques.
We then present our work on system interoperability testing. This work has been motivated by the need to test interoperability of systems carrying voice calls over the IP network. Voice over IP (VoIp) systems must be integrated and interoperate with the exiting Public Switched Telephone Network before they are widely adopted. Standards have been developed to address this problem, but unfortunately there is no guarantee that the integrated VoIP systems would interoperate properly even if the implementations are all compliant to standards. Interoperability testing has become indispensable.
We study criteria that cover all the required patterns of "interoperating behaviors". We want to test all such system interoperations. On the other hand, test execution in real environment is expensive, and we want to minimize the number of tests. We study data structures and efficient test generation algorithms, which take time proportional to the total test case size. We report experimental results on VoIP systems.
 
Biography
David Lee was born in Hong Kong and grew up in Soozhow, China. He received a Master's degree in Mathematics from Hunter College of City University of New York in 1982 and a Master¨s and a Doctorate degree in Computer Science from Columbia University in 1985.

From 1985 to 1999 he was working at Bell Laboratories Research, Murray Hill and became Director of Networking Research Department in 1998. Since March 2000, he is VP of Bell Labs Research and is responsible for Bell Labs Research China in Beijing, China.

His current research interests include: data networking and software, all optical networks, and complexity theory.

In 1996, he was awarded Bell labs Research Distinguished Member of Technical Staff. He became a Fellow of The IEEE in 1997. He has won the Best Paper Award of PSTV-FORTE in 2000. He is a Counselor of National Science Foundation of China.

David Lee is an editor of IEEE/ACM Transactions on Networking and an associate editor of Journal of Complexity. He has served at various technical program committees of international conferences. He was Program Co-chair of ICNP in 1994 and 2000 and General Co-chair of ICNP in 1996. He is Vice-chair of Infocom in 2001 and Program Co-chair of Infocom in 2002.Serves at the Editorial Board of "Electronica Sinica".

David Lee has been a Visiting Faculty of National Institute of Standards and Technology (US), a Visiting Professor of Institute Nationale des Telecommunications (France), Tsinghua University, Peking University and Fudan University (China), Guest Professor of Chinese Academy of Science, and Advisor of Board of ^Area of Excellence in Information Technology" of Hong Kong Government, and Adjunct Professor of Columbia University (US) .


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