Company Filing History:
Years Active: 1995-2000
Title: Duan-Shin Lee: Innovator in Adaptive Scheduling for ATM Networks
Introduction
Duan-Shin Lee is a notable inventor based in Princeton Junction, NJ (US). He has made significant contributions to the field of telecommunications, particularly in adaptive scheduling disciplines for ATM networks. With a total of 3 patents, his work has had a profound impact on network performance and efficiency.
Latest Patents
One of his latest patents is titled "Weighted Longest Queue First Adaptive Scheduling Discipline for ATM." This invention discloses a weighted longest queue first (WLQF) service discipline for ATM networks. The system classifies sources so that those in one class share the same cell loss probability requirement. The WLQF system features N buffers to store traffic, with each buffer assigned a positive weight. The scheduler transmits a cell from the buffer that maximizes the weighted queue length, ensuring that the most congested buffer receives priority service. This innovative approach allows the system to adapt quickly to temporary overloads, significantly reducing losses due to buffer overflows and cell delay variation.
Another significant patent is "Temporal Placement Control of Video Frames in B-ISDN Networks." This invention presents methods for traffic smoothing for frames from different video sources. The network controls the timing of when a source begins transmitting its first frame, while subsequent frames are sent at fixed intervals. By employing heuristic and optimization methods, the system effectively manages the temporal placement of video frames, reducing the loss rate of high-priority cells and enhancing overall traffic smoothness.
Career Highlights
Duan-Shin Lee is currently employed at NEC USA, Inc., where he continues to innovate in the field of telecommunications. His work has been instrumental in developing advanced scheduling techniques that improve network performance.
Collaborations
He collaborates with Bhaskar Sengupta, contributing to the advancement of technologies in their field.
Conclusion
Duan-Shin Lee's contributions to adaptive scheduling and traffic management in ATM networks highlight his role as a leading inventor in telecommunications. His innovative patents demonstrate a commitment to enhancing network efficiency and performance.