Ha Young Oh

Title: Ha Young Oh: Innovator in Mobile Networking Technologies

Introduction

Ha Young Oh is a prominent inventor based in Seoul, South Korea. He has made significant contributions to the field of mobile networking, particularly in enhancing video streaming and improving handover processes in vehicular wireless networks. With a total of two patents to his name, his work reflects a deep understanding of network coding and mobile communication technologies.

Latest Patents

Ha Young Oh's latest patents include a method for mobile video streaming enhancement in a network coding-capable wireless network. This innovative method consists of three parts. The first part involves the access point (AP) measuring the information of all clients, such as Expected Transmission count metric (ETX) and Receive Signal Strength Indicator (RSSI), periodically to assess long-term channel quality and mobility patterns. The second part allows the AP to estimate the buffer status, short-term channel quality, and mobility detection of each client based on feedback from the target client and the results from the first part. Finally, the AP performs practical online scheduling to select the best network code set that satisfies a high Peak Signal-to-Noise Ratio (PSNR) during a Group of Picture (GoP) at all clients, prioritizing I-frames for optimal video quality.

Another notable patent is the method for lossless handover in vehicular wireless networks. This method aims to reduce handover delays and minimize overhead caused by duplicate address detection (DAD) for a new Care-of-Address (CoA). The process is divided into handover at road-sections and handover at intersections. During the handover, a vehicle continues to use its original CoA configured at the original access router at road-sections, even when the access router changes, thereby reducing handover delays. A new CoA is only configured at intersections, which helps to decrease the binding update time of a home agent located in an external network. While performing DAD for a new CoA at intersections, the vehicle conducts DAD as a background process, allowing it to communicate using the original CoA and thus reducing overhead.

Career Highlights

Ha Young Oh has worked with esteemed institutions such as Seoul National University and Snur & Db Foundation. His experience in these organizations has contributed to his expertise in mobile networking technologies and innovation.

Collaborations

Ha Young Oh has collaborated with Chong Kwon Kim, a talented woman in the field