Location History:
- Daejeon, KR (2010 - 2014)
- Cheongju, KR (2015)
Company Filing History:
5 out of 11,316 
4 out of 131,766 
3 out of 1,217 
Years Active: 2010-2015
Title: Innovations of Jae-Sun Cha in Wireless Communication
Introduction
Jae-Sun Cha is a prominent inventor based in Daejeon, South Korea, known for his significant contributions to wireless communication technology. With a total of five patents to his name, he has developed innovative methods that enhance the efficiency and reliability of mobile communication systems.
Latest Patents
One of his latest patents is a handover method in a wireless portable internet system. This invention discloses a process where, during a drop state, a mobile subscriber station sends a ranging request message to a target base station. This message includes an identifier of the previous base station and an encoded string using the authentication key of that base station. The target base station then requests the previous base station to execute the handover, ensuring a seamless service session even during drop states. Another notable patent is a method of performing handover in a wireless communication system. This invention involves sharing a list of neighboring base stations between the mobile station and the serving base station before the handover occurs. This approach reduces handover delay time and prevents failures due to a lack of radio resources, thereby increasing the success rate of handovers.
Career Highlights
Jae-Sun Cha has worked with esteemed organizations such as the Electronics and Telecommunications Research Institute and Samsung Electronics Co., Ltd. His experience in these companies has allowed him to refine his skills and contribute to groundbreaking advancements in wireless technology.
Collaborations
Throughout his career, Jae-Sun Cha has collaborated with notable colleagues, including Chul-Sik Yoon and Kwang-Jae Lim. These partnerships have fostered an environment of innovation and creativity, leading to the development of impactful technologies.
Conclusion
Jae-Sun Cha's work in wireless communication has significantly advanced the field, particularly through his innovative handover methods. His contributions continue to influence the way mobile communication systems operate, ensuring better connectivity and service for users.