Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12368761 | First IMS node, first core network node, second IMS node, and methods performed therein | Ralf Keller, Anders Ryde, Mattias Dahlqvist | 2025-07-22 |
| 12336049 | Network node, user equipment, and methods performed in a communication network | Ralf Keller | 2025-06-17 |
| 12095827 | First node, second node and methods performed thereby for handling identification of a communications network | Mats Buchmayer | 2024-09-17 |
| 11838805 | Technique for preparing user equipment mobility | Ralf Keller, Ann-Christine Sander | 2023-12-05 |
| 11611913 | Technique for preparing user equipment mobility | Ralf Keller, Ann-Christine Sander | 2023-03-21 |
| 11470528 | Technique for preparing user equipment mobility | Ralf Keller, Ann-Christine Sander | 2022-10-11 |
| 11445560 | Method of establishing a voice over internet protocol, VoIP, call between a calling user equipment, UE, and a called UE | Ralf Keller, Venkata Ramesh Balabhadruni, Jinyin Zhu | 2022-09-13 |
| 11323922 | Managing user equipment roaming status changes in a radio access network | Jerker Mattias Zetterlund, Andreas Anulf, Jan Dahl, Magnus Hallenstål, Ralf Keller +1 more | 2022-05-03 |
| 11159582 | Terminating call handling for power saving activated user equipment | Jinyin Zhu, Ralf Keller | 2021-10-26 |
| 11140598 | Network initiated inter-RAT handover | Ralf Keller, Patrik Dannebro | 2021-10-05 |
| 11050799 | Methods and devices for registering a user equipment, UE, with low access priority in an internet protocol based multimedia subsystem, IMS | Jinyin Zhu, Ralf Keller | 2021-06-29 |
| 10893409 | Indication of evolved packet system fallback capability | Ralf Keller | 2021-01-12 |
| 10841863 | Access information handling in a mobile network with cellular network accesses and wireless local area network accesses | Ralf Keller, Magnus Hallenstål, Stefan Rommer | 2020-11-17 |
| 10595250 | Quality of service initiated handover | Ralf Keller, Patrik Dannebro | 2020-03-17 |
| 10536487 | End user controlled multi-service device priority setting | Ester Gonzalez De Langarica, Mattias Dahlqvist, Cormac Hegarty | 2020-01-14 |
| 10506499 | Indication of packet based voice support in a mobile network with different radio access technologies | Ralf Keller, Magnus Hallenstål | 2019-12-10 |
| 10383163 | Enhancements to terminating access domain selection | Håkan Österlund, Daniel Nilsson, Ann-Christine Sander | 2019-08-13 |
| 10027719 | Resolving competing handover conditions in wireless networks | Håkan Österlund, Magnus Hallenstål | 2018-07-17 |
| 10009830 | Access information handling in a mobile network with cellular network accesses and wireless local area network accesses | Ralf Keller, Magnus Hallenstål, Stefan Rommer | 2018-06-26 |
| 9906652 | Shifting of communication session charges | Ester Gonzalez De Langarica, Jerker Mattias Zetterlund, Nils Hänström | 2018-02-27 |
| 9832234 | IMS inbound roamer and short number dialing | David Castellanos Zamora, Gert Oster, Sorin Surdila | 2017-11-28 |
| 9706446 | Handover of emergency call anchored in IMS to a circuit switched access network | Fredrik Lindholm | 2017-07-11 |
| 9413561 | Routing terminating calls | Ralf Keller, Fredrik Lindholm, David Castellanos Zamora, Juan Manuel Fernandez Galmes, Antonio Alonso Alarcon | 2016-08-09 |
| 9338625 | Geographically redundant and multiple EATF nodes | Fredrik Lindholm | 2016-05-10 |
| 7054648 | Location privacy proxy server and method in a telecommunication network | Olof Jansson | 2006-05-30 |