Assignee
KELLER RALF
DE32 patents
Top patents by PatentIndex Score
US9106664B2Aug 11, 2015
Method and apparatuses for maintaining service continuity to a centralization and continuity application server
KELLER RALF5 citations84
US8848666B2Sep 30, 2014
Handover of emergency calls from a circuit switched to a packet switched access network
KELLER RALF9 citations84
US8483182B1Jul 9, 2013
Single radio voice call continuity handover of calls with video media from a circuit switched access network
KELLER RALF10 citations84
US8229408B2Jul 24, 2012
System and method for selecting a subsystem for call termination
KELLER RALF7 citations84
US8671201B2Mar 11, 2014
Correlation of sessions in case of session transfer in IMS domain
KELLER RALF9 citations83
US8964961B2Feb 24, 2015
Method of routing a session from a calling party in a serving communication network of the calling party to a called party
KELLER RALF6 citations82
US9538574B2Jan 3, 2017
Technique for terminating call set up in a CSFB situation
KELLER RALF2 citations73
US9294964B2Mar 22, 2016
Handover delay optimization
KELLER RALF3 citations73
US9294618B2Mar 22, 2016
Call-back to a UE that has made an emergency call via a visited IMS network
KELLER RALF3 citations73
US8824417B2Sep 2, 2014
Methods and apparatuses for single radio voice call continuity (SRVCC) from CS to LTE
KELLER RALF4 citations73
US8792852B2Jul 29, 2014
Method for informing multiple mobile terminals of an emergency event
KELLER RALF4 citations73
US9413561B2Aug 9, 2016
Routing terminating calls
KELLER RALF5 citations72
US8885603B2Nov 11, 2014
Handover of calls between access networks
KELLER RALF4 citations67
US9294993B2Mar 22, 2016
Handling of access capability information in a mobile network
KELLER RALF2 citations63
US9055546B2Jun 9, 2015
Handling a registration timer to provide service continuity in IMS
KELLER RALF2 citations63
US8923247B2Dec 30, 2014
Handover from circuit switched to packet switched
KELLER RALF2 citations63
US8908643B2Dec 9, 2014
Handover of priority calls from a circuit switched access network with single radio voice call continuity
KELLER RALF2 citations63
US8619675B2Dec 31, 2013
Technique for emergency session handling in a communication network
KELLER RALF2 citations63
US8265015B2Sep 11, 2012
Communication path allocating entity and method
KELLER RALF2 citations63
US9161268B2Oct 13, 2015
Technique for connection attempt handling in a circuit switched fallback situation
KELLER RALF2 citations60
US9717023B2Jul 25, 2017
Methods and devices for improving session continuity
KELLER RALF1 citations52
US9717043B2Jul 25, 2017
Regulation by MSC server when using SGs/Gs
KELLER RALF0 citations52
US9338641B2May 10, 2016
Enhanced handling of access capability information in a mobile network
KELLER RALF1 citations52
US9277461B2Mar 1, 2016
Methods of and nodes for selecting a target core network for handing over a voice session of a terminal
KELLER RALF0 citations52
US9066213B2Jun 23, 2015
Node for short message context
KELLER RALF0 citations52
US9374761B2Jun 21, 2016
Routing terminating call to user equipment via control nodes
KELLER RALF1 citations51
US8948127B2Feb 3, 2015
Method, apparatus and computer program for supporting a session identifier in case of a transfer between different radio access networks
KELLER RALF1 citations51
US9332467B2May 3, 2016
SRVCC handover of calls between access networks with efficient media gateway selection
KELLER RALF1 citations50
US9100408B2Aug 4, 2015
Method for registering multi-contact devices
KELLER RALF0 citations50
US9509547B2Nov 29, 2016
Selection of service domain in IMS centralised services
KELLER RALF0 citations42
US9491668B2Nov 8, 2016
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
KELLER RALF0 citations42
US8411641B2Apr 2, 2013
Methods for controlling access domain switching, network nodes, user terminal and computer program product therefor
KELLER RALF0 citations42