Nokia Solutions and Networks Oy

Nokia Technologies Oy

Siemens Aktiengesellschaft

Nokia Corporation

Nokia Solutions and Networks Gmbh & Co. Kg

Nokia Technology Oy

Nokia Siemens Networks Oy

Nokia Siemens Networks Gmbh & Co Kg

Leis, Peter

Belling, Thomas

Peter Leis

Thomas Belling

Jiadong Shen

Devaki Chandramouli

Bruno Landais

Ulrich Wiehe

Georg Mayer

Martin Oettl

Laurent Thiebaut

Curt C Wong

Jari Mutikainen

Miikka Juhana Poikselka

Alexander Milinski

Rainer Liebhart

Sung Hwan Won

John Juha Antero Rasanen

Jozsef Varga

Günther Horn

Thomas Theimer

Tuomas Niemela

Jürgen Mayer

Juergen Mayer

Bernhard Pfeil

Gunter Horn

Lazaros Gkatzikis

Georg Schmitt

Robert Ropolyi

Suprabhat Chatterjee

Doris Sachsenweger

Mohammad Vizaei

Gunther Horn

Keith Drage

Jurgen Mayer

An apparatus comprising means for performing: receiving, from a first client, a call request comprising address information for calling at least one second client, the address information comprising a Functional Alias, wherein the Functional Alias is activated by the at least one second client; in response to receiving the call request at the apparatus, sending, to a server, a request to resolve the Functional Alias to at least one Mission Critical Push to Talk Identifier of the at least one second client that has activated the Functional Alias; receiving, at the apparatus from the server, the at least one Mission Critical Push to Talk Identifier of the at least one second client; sending, from the apparatus, a call request to the at least one second client using the at least one Mission Critical Push to Talk Identifier of the at least one second client.

Apparatus, method and computer program

A server receives a call request for a mission critical, push to talk (MCPTT) call. In response to receiving the call request, the server accesses a mapping of an MCPTT identifier of a user equipment with an interworking identifier that is formed according to an address format implemented in Global System for Mobile communications (GSM) for Railways (GSM-R). The server then forwards the call request from the server based on the mapping. In some cases, the MCPTT identifier is a uniform resource identifier (URI) and the interworking identifier is represented in an e164 format.

Interworking between mobile railway networks and GSM networks

Systems, methods, apparatuses, and computer program products for providing IMS level awareness of high latency device are provided. One method, when a UE attaches to EPC, receiving, at a network node, an indication that the UE is a high latency device. The method may also include assigning, to the UE, an IP address selected from a special IP address range that is designated specifically for high latency devices. When the UE performs IMS registration, the method may include determining that the UE is a high latency UE based on the UE's IP address provided with the IMS registration request and assigned during the EPC attach procedure.

Internet protocol (IP) multimedia subsystem (IMS) level awareness of high latency device

It is provided a method, comprising monitoring, for each of plural attempts of a web identity to register for an internet protocol multimedia service, if the respective attempt is received; generating, for each of the plural attempts if the respective attempt is received, a respective private user identification based on the web identity and a respective distinguishing identifier, wherein probability that two of the private user identifications have a same value is less than a predefined limit; providing the respective private user identification in response to the respective attempt.

Multiple parallel WebRTC accesses to IMS

Embodiments of the invention include a User Equipment UE, configured to: support access, via a serving network referred to as local network including an IMS network accessed by a PS domain, without user authentication, to services referred to as Local Services, including non-emergency services.

Access to local services by unauthenticated users

Systems, methods, apparatuses, and computer program products for data storage (DS) function selection are provided. One method includes obtaining, from a network node, an address of a DS function that contains user equipment (UE) context information for at least one UE. The method may further include accessing, by a client, the DS function to register for the UE context information.

Data storage function selection

A scenario may arise in which a circuit switched (CS) bearer reservation is successful but a voice media switching from packet switched (PS) to CS performed by a mobile switching center (MSC) server fails. Certain embodiments provides systems, apparatuses, and methods for recovery from such a scenario. A method, for example, can include determining whether session transfer of a user equipment is possible in response to a request from a network element to initiate session transfer of the user equipment and reporting to the requesting network element either a generic or specific indication that the transfer is not possible, when it is determined that the session transfer is not possible.

Handling handover requests in a communications system

A method, apparatus and computer program product are provided in accordance with example embodiments in order to provide methods, apparatuses, and/or systems that reduce and/or eliminate network inefficiencies caused by the persistence of user-equipment-specific associations with network interfaces and elements, including but not limited to user-equipment-specific associations on at least N2. In some example implementations, an AMF may assign a temporary ID containing particularized identification information to a UE in a manner that allows for selection by a (R)AN of a AMF and that enables an AMF to process an N1/N2 transaction, such as may occur when a UE enters an idle mode and/or transitions from an idle mode to a connected mode.

Method and system for selection of an access and mobility management function in an access network environment

Various communication systems may benefit from the transfer of sender or receiver communication parameters. For example, such transfer of sender communication parameters may be useful in connection with single radio voice call continuity (SRVCC) and reverse SRVCC. A method can include receiving, at an intermediate entity from a first entity, signaling including at least one parameter describing a user plane payload format that the first entity wants to receive and an encoding that the first entity wants to receive. The method can also include forwarding, by the intermediate entity, the at least one parameter in signaling to a second entity.

Transfer of communication parameters

It is provided a method, comprising supervising if an information in a registration request is received from a registrar of a network domain, wherein the information comprises an application identity of a user of a terminal device and a network identity; storing, based on the received information, a binding between the application identity and the network identity; determining the network identity based on the binding and a received first request for establishing a communication to the terminal device; providing, based on the received first request, to the network domain, a second request for establishing the communication towards the terminal device, wherein the second request is based on the determined network identity.

User identities for PTT and MCPTT

There is proposed a method and corresponding apparatuses allowing a change from a packet switched communication domain to a circuit switched communication domain. When a user equipment as a connection terminating point receives a connection initialization message with a media flow, such as audio, which cannot be delivered by the packet switched access, it sends a specific response rejecting the connection via the packet switched access to an application server for service centralization and continuity. In the application server, it is checked whether several conditions are met in order to determine whether the communication connection comprising the media flow is allowed to be changed to the circuit switched domain. If yes, the communication connection is changed from the packet switched communication domain to the circuit switched communication domain.

Access change for re-routing a connection

The invention relates to a session control entity, subscription entity, methods and computer programs for transmitting a request to terminate a registration of a user, determining if the user is registered for an emergency service, for maintaining the user registered for the emergency service, if based on the determination the user is registered for the emergency service, and transmitting an indication indicating that the user is registered for an emergency service if based on the determination the user is registered for the emergency service.

Method and apparatus for maintaining a registration for an emergency service

The invention relates to a session border controller, method and computer program for receiving in a first network, from a second network, an indication indicating a type of a network interface between the first network and the second network, wherein the indication is received during establishment of a communication session through the first network and the second network, and processing the communication session based on the type of the network interface.

Method and apparatus for indicating a type of a network interface

It is disclosed a method including accepting, after storage of a registration message including first address information received from a first serving entity capable of access technology-independent service control, a de-registration request message including second address information identical to the first address information from a second serving entity capable of access technology-independent service control.

Method, apparatus, system and related computer program product for handover management

Growing community of inventors

Penzberg, Germany

Peter Leis