Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7978855 | Method for allocating authorization key identifier for wireless portable internet system | Sung Cheol Chang, Chul Sik Yoon | 2011-07-12 |
| 7907733 | Method for managing traffic encryption key in wireless portable internet system and protocol configuration method thereof, and operation method of traffic encryption key state machine in subscriber station | Sung Cheol Chang, Chul Sik Yoon | 2011-03-15 |