WORK EXPERIENCE
 

Associate Professor, Polytechnic University, Jan 1999-Present.

• Research projects: Wireless MAC protocol with differentiated QoS support, Internetworking of CL and CO networks, Routing protocols with enhancements for QoS support, mobility management in connection-oriented networks

Distinguished Member of Technical Staff, Bell Labs., Holmdel, NJ (May '94 - Jan. '99)

• Connectionless ATM: Recognized that an integrated services network should support both connection-oriented and connectionless networking modes. Both modes are most efficiently supported if they use the same addressing scheme and same routing protocol.
• Interworking of different networks: Since ATM-to-the-desktop is increasingly viewed as being uncompetitive, ATM networks will primarily receive traffic from telephony switches and IP routers. Thus, interworking of ATM networks with PSTNs and the Internet becomes important. Our proposal is to simply build gateways to interwork any two networks along five lines: user-plane protocols, signaling protocols, routing protocols, datagram protocols and addressing schemes.
• Routing protocols: PNNI routing protocol extended for soft PVC management and mobility. QoS-based routing. Virtual trees routing protocol.
• Virtual networking: Designed algorithms for a scalable wireless virtual LAN. Proposed a vir- tual tree based networking solution. Quantified behavior using equivalent bandwidth analysis.
• Network Management: Implemented a virtual path management system that automatically reroutes virtual paths and adjusts bandwidth allocations with changing conditions, and a topology discovery tool for a wireless data LAN, which is currently in the product line.
• Wireless ATM: Proposed new location management algorithms (mobile PNNI and location registers schemes) and handoff management schemes. Currently, pursuing standardization of these schemes in the Wireless ATM working group of the ATM Forum.
• Principal investigator in a three-year multi-million dollar government funded project called "Mobile Information Infrastructure."
• Advised two Ph.D. students, managed developers, and mentored summer students.

Member of Technical Staff,  Bell Labs., Holmdel NJ (May '92 - May '94)

• Distributed Call Processing Architecture (DCPA): proposed and implemented a revolutionary approach for service, call and (parallel) connection control in Intelligent broadband networks using object-oriented analysis. Currently under product development.

Member of Technical Staff, AT&T Bell Labs., Columbus, OH (September '88 - May '92)

• Project leader for the implementation of a highly-reliable Signaling System No. 7 interface unit using state-of-the-art technology (FutureBus+ and software backplanes). Team of 15.

Research Assistant, Duke University (Sept. '87 - Aug. '88)

• Joint projects with C. S. Draper Laboratories and NASA Langley Research Center to analyze the reliability and performance of a number of computer and control systems.