Issued Patents 2016
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9491675 | Policy engine in mobile unit for enhanced femtocell handover | Yigang Cai | 2016-11-08 |
| 9491311 | Modular offline charging system that stores accounting data in data segments of a storage system | — | 2016-11-08 |
| 9438748 | CDF tracking for offline charging | — | 2016-09-06 |
| 9362751 | Method of controlling the power input to a HVDC transmission link | Kim Hoej Jensen | 2016-06-07 |
| 9357081 | Method for choosing an alternate offline charging system during an overload and apparatus associated therewith | — | 2016-05-31 |
| 9281950 | Method for using intelligent router in charging system and apparatus associated therewith | — | 2016-03-08 |
| 9245135 | CDR filtering for virtual operators | Helmut Raether, Yigang Cai | 2016-01-26 |
| 9231774 | Congestion control for radio access networks (RAN) | Yigang Cai | 2016-01-05 |