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Ip Multimedia Subsystem

Ip Multimedia Subsystem-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Continuous communication for prioritized user device applications
T-mobile Usa, Inc.
June 14, 2018 - N°20180167858

Continuous communication during network handovers may ensure the sending and receiving of mission-critical data by over-the-top (ott) applications is performed without interruption using multiple communication networks. A request from an ott application to establish a communication session with an ip multimedia subsystem (ims) core of a wireless carrier network for routing communication traffic to the ims core may be received.
Sip call continuity upon failure
T-mobile Usa, Inc.
May 10, 2018 - N°20180132291

A p-cscf (proxy call session control function) is a component that services as an entry point into an ims (ip multimedia subsystem) communications system. During a p-cscf discovery process, a device is configured to obtain both an identification of a primary p-cscf and an identification of a secondary p-cscf.
Enhanced multimedia call control in next generation mobile communication systems
Mediatek Inc.
May 10, 2018 - N°20180132141

A network-based solution of supporting ip multimedia subsystem (ims) call setup in a next generation system (5gs) is proposed. During an attach or registration area update procedure, a serving base station sends an indication to a ue indicating whether ims voice over ps session is supported or not.
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Ip multimedia subsystem (ims) communication testing
T-mobile Usa, Inc.
May 03, 2018 - N°20180123938

Systems and methods for testing performance of communications over an ip multimedia subsystem (ims) or evolved packet core (epc) are disclosed. Based on simulated communications that appear initiated from user devices, performance measures can be determined from monitored responses to the simulated communication as well as information obtained from nodes in the ims or epc..
Enhancements to terminating access domain selection
Telefonaktiebolaget Lm Ericsson (publ)
April 19, 2018 - N°20180110089

A method of determining in an ip multimedia subsystem, ims, network which radio access type, rat, should be used to route a terminating session directed towards a user equipment, ue. The hss receives a terminating access domain selection, t-ads, query from an application server, as, of the ims network, the t-ads query relating to the terminating session and identifying the ...
Timer management for session initiation protocol
T-mobile Usa, Inc.
April 19, 2018 - N°20180109564

Systems and methods for managing timers for session initiation protocol (sip) that facilitates network communications in an ip multimedia subsystem (ims) are disclosed. Based on monitored network traffic, network performance measures can be determined to form a basis for dynamic configuration of sip timers, which may reflect real time network status and optimize sip based network communication..
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Using device location for emergency calls
Microsoft Technology Licensing, Llc
February 22, 2018 - N°20180054721

Embodiments relate to making ip-based (internet protocol based) emergency calls. A device is capable of making calls over the internet to an ip multimedia subsystem (ims) core to a public-safety answering point (psap).
Ip-based ussd communications
T-mobile Usa, Inc.
February 08, 2018 - N°20180041550

A ussd (unstructured supplementary service data) message may be transmitted by a communication device to an ims (ip multimedia subsystem) within a sip (session initiation protocol) invite message, where it is received by a tas (telephony application server). The tas sends the ussd message to an hss (home subscriber service) of the ims using an existing diameter sh interface between ...
Dynamic service point triggering in an ip multimedia subsystem
Telefonaktiebolaget Lm Ericsson (publ)
February 08, 2018 - N°20180041547

The present invention relates to a first and second method and corresponding nodes for generating dynamic service point triggers, spts, in an ip multimedia subsystem, ims. The first method comprises receiving, at a first node, initial filter criteria, ifc, belonging to a service profile of a user subscribed to said ims, said ifc including a plurality of preset spts, respectively ...
Provision of location information in an ip multimedia subsystem network
Telefonaktiebolaget Lm Ericsson (publ)
February 08, 2018 - N°20180041350

A method of providing location-related charging information to a charging system associated with an ip multimedia subsystem, ims, network, where the location-related charging information relates to a session or session initiation or an event involving at least two users. The method comprises, at a charging trigger function, ctf, within the ims network, receiving a session initiation protocol, sip, message from ...
Method to support service continuity for multiple sessions
Mediatek Inc.
November 30, 2017 - N°20170346860

A method to manage call continuity in a network environment including a circuit-switched network and an ip multimedia subsystem (ims) network is provided. A ue monitors one or more ongoing sessions in an ims network, and the ongoing sessions contain at least one conference call.
Enabling dual registration of user equipment with ip multimedia subsystems
Telefonaktiebolaget Lm Ericsson (publ)
November 23, 2017 - N°20170339655

A method of enabling dual registration of a user equipment, ue, with first and second internet protocol multimedia subsystem, ims, networks, the method comprising, in response to a connection request made to a gateway node by the ue, sending to the ue, network addresses of respective first and second proxy call session control functions, p-cscf, the first and second p-cscfs ...
Mobile communication system, communication control device, mobility management entity, and mobile communication method
Ntt Docomo, Inc.
October 26, 2017 - N°20170311151

A home subscriber server (hss) determines whether roaming of voice communication via an ip multimedia subsystem (ims) is supported in the visited public land mobile network (vplmn) or not, and transmits to a mobility management entity (mme) a signal that includes a ‘voice supported’ or ‘voice not supported’ indicator that indicates whether the roaming is supported ...
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Extending and re-using an ip multimedia subsystem (ims)
T-mobile Usa, Inc.
October 05, 2017 - N°20170289158

Systems and methods for extending and re-using an ip multimedia subsystem (ims) to extend the trust relationship from a closed group of customers of wireless service providers to users of other ecosystems (e.g., gmail, facebook, or yahoo!) for ims services. Some embodiments include receiving a request from an initiating device to establish a service connection between the initiating device ...
Method, apparatus and computer program product for provisioning multiple user identities in an ip multimedia ...
Nokia Solutions And Networks Oy
September 21, 2017 - N°20170272939

A mechanism for an apparatus in a communication network is described. The mechanism comprises receiving provisioning from a second apparatus, wherein said provisioning comprising at least a public identity and a pre-defined range of private identity associated with the public identity, receiving a request comprising a first public identity and its associated private identity from a third apparatus, determining the ...
Method for ensuring media stream security in ip multimedia sub-system
Invt Spe Llc
August 17, 2017 - N°20170237713

A method for ensuring media stream security in an ip multimedia subsystem network is disclosed. The method includes: assigning an end-to-end media stream security key for a calling user equipment (ue) or a called ue, by a network device with which the calling ue or the called ue is registered, respectively, and transmitting the media stream security key to a ...
Method and apparatus for supporting an emergency call service in an ip multimedia subsystem session ...
Nokia Technologies Oy
August 03, 2017 - N°20170223515

A method, apparatus and computer program product are provided to facilitate the handover from a packet switched network to a circuit switched network while an internet protocol (ip) multimedia subsystem (ims) session is ongoing. In the context of a method, a notification is received of the handover from a packet switched network to a circuit switched network while an ims ...
Method, apparatus, and system for disaster recovery of ims
Huawei Technologies Co., Ltd.
July 06, 2017 - N°20170195873

A method, apparatus, and system for disaster recovery of an ip multimedia subsystem (ims) are provided. The method includes: triggering a redundant call session control function (cscf); obtaining, by the redundant cscf, user backup data of registered ims private user identities (impis) that are associated with impus and user service configuration data of ims public user identities (impus) in an ...
Internet protocol television audio and video calling
At&t Intellectual Property I, L.p.
June 15, 2017 - N°20170171512

A system that incorporates teachings of the present disclosure may include, for example, a computer-readable storage medium in a media controller having computer instructions to execute a soft-phone client application on the media processor, receive an audio call or a video call originating from an ip multimedia subsystem network where the calls are directed to the media processor by a ...
Local network alert system for mobile devices using an ims session and wi-fi access point
May 25, 2017 - N°20170150336

A wireless emergency alert system (also known as a wireless emergency alert system, or “wea,” and formerly known as a commercial mobile alert system, or “cmas”) receives a geotargeted federal alert that is to be delivered to mobile devices within a defined geographic region. A database of locations of access points is ...
Method for connecting ims-based service
Lg Electroniics Inc.
May 18, 2017 - N°20170142706

The present specification provides a method for connecting an ip multimedia subsystem (ims)-based service in a terminal. The method for connecting the ims-based service, includes the steps of: setting a cause value denoting signaling or due to the ims in an establishment cause field, when a session initiation protocol (sip)-based message is required to be transmitted on a ...
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