Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8514757 | Periodic ranging in a wireless access system for mobile station in sleep mode | Chang Jae Lee, Ki Seon Ryu | 2013-08-20 |
| 8379554 | Periodic ranging in a wireless access system for mobile station in sleep mode | Chang Jae Lee, Ki Seon Ryu | 2013-02-19 |
| 8135445 | Periodic ranging in a wireless access system for mobile station in sleep mode | Chang Jae Lee, Ki Seon Ryu | 2012-03-13 |
| 7986949 | Method for performing handover in broadband wireless access system | Ki Seon Ryu, Yong-Won Kwak, Yong Ho Kim, Ki Hyoung Cho | 2011-07-26 |
| 7949352 | Supporting idle mode of mobile station in wireless access system | Ki Seon Ryu | 2011-05-24 |
| 7894831 | Controlling idle mode of mobile subscriber station in wireless access system | Ki Seon Ryu | 2011-02-22 |
| 7672696 | Periodic ranging in a wireless access system for mobile station in sleep mode | Chang Jae Lee, Ki Seon Ryu | 2010-03-02 |
| 7590421 | Supporting idle mode of mobile station in wireless access system | Ki Seon Ryu | 2009-09-15 |
| 7558605 | Periodic ranging in a wireless access system for mobile station in sleep mode | Chang Jae Lee, Ki Seon Ryu | 2009-07-07 |
| 7194288 | Periodic ranging in a wireless access system for mobile station in sleep mode | Chang Jae Lee, Ki Seon Ryu | 2007-03-20 |