Issued Patents All Time
Showing 26–50 of 95 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9706446 | Handover of emergency call anchored in IMS to a circuit switched access network | Afshin Abtin | 2017-07-11 |
| 9674750 | Handling of access capability information in a mobile network | Ralf Keller, Peter Hedman, Magnus Olsson | 2017-06-06 |
| 9639440 | Authentication in a data layered architecture network | Bo Astrom, Jan Lemark | 2017-05-02 |
| 9628271 | Key management for secure communication | Rolf Blom, Yi Cheng, John Mattsson, Mats Näslund, Karl Norrman | 2017-04-18 |
| 9596640 | Method of routing a session from a calling party in a serving communication network of the calling party to a called party | Ralf Keller, Gert Oster, Mats Stille | 2017-03-14 |
| 9560084 | Reallocation of serving proxy function in IMS | Hubert Przybysz | 2017-01-31 |
| 9560509 | Emergency signalling in an IP multimedia subsystem network | Per O. Oberg | 2017-01-31 |
| 9509547 | Selection of service domain in IMS centralised services | Ralf Keller | 2016-11-29 |
| 9503890 | Method and apparatus for delivering keying information | Karl Norrman, Rolf Blom | 2016-11-22 |
| 9491668 | Methods of and nodes for informing a control node in a serving communication network of address information about a session anchor node in the serving communication network | Ralf Keller | 2016-11-08 |
| 9467907 | Handover of user-equipment (UE) undetected emergency calls | Venkata Ramesh Balabhadruni, Ralf Keller | 2016-10-11 |
| 9456390 | Method and apparatuses for maintaining service continuity to a centralization and continuity application server | Ralf Keller, Jian Wang | 2016-09-27 |
| 9456400 | Best effort call routing preference setting | Ralf Keller | 2016-09-27 |
| 9432897 | Handling of access capability information in a mobile network | Ralf Keller, Peter Hedman, Magnus Olsson | 2016-08-30 |
| 9413561 | Routing terminating calls | Ralf Keller, Afshin Abtin, David Castellanos Zamora, Juan Manuel Fernandez Galmes, Antonio Alonso Alarcon | 2016-08-09 |
| 9374761 | Routing terminating call to user equipment via control nodes | Ralf Keller, Fredrik Alriksson, Karl-Peter Ranke | 2016-06-21 |
| 9374763 | Gating control in a telecommunication system | Jian Wang, Ralf Keller | 2016-06-21 |
| 9344412 | Security key management in IMS-based multimedia broadcast and multicast services (MBMS) | Vesa Lehtovirta | 2016-05-17 |
| 9338625 | Geographically redundant and multiple EATF nodes | Afshin Abtin | 2016-05-10 |
| 9332467 | SRVCC handover of calls between access networks with efficient media gateway selection | Ralf Keller, Kari-Pekka Perttula, Karl-Peter Ranke | 2016-05-03 |
| 9294993 | Handling of access capability information in a mobile network | Ralf Keller, Peter Hedman, Magnus Olsson | 2016-03-22 |
| 9294964 | Handover delay optimization | Ralf Keller, Magnus Hallenstål, Magnus Olsson | 2016-03-22 |
| 9294618 | Call-back to a UE that has made an emergency call via a visited IMS network | Ralf Keller | 2016-03-22 |
| 9264946 | Homogeneous circuit switched voice support indication in a mobile network | Ralf Keller, Peter Hedman | 2016-02-16 |
| 9258700 | Systems and methods for utilizing IMS data security mechanisms in a circuit switched network | Rolf Blom | 2016-02-09 |