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294 results about "Voice call continuity" patented technology
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The 3GPP has defined the Voice Call Continuity (VCC) specifications in order to describe how a voice call can be persisted, as a mobile phone moves between circuit switched and packet switched radio domains (3GPP TS 23.206).
Voice call continuity application server between IP-CAN and CS networks
InactiveUS20070014281A1Accurate processingMultiplex system selection arrangementsConnection managementAccess networkApplication server
A system and method for continuous voice calls when a user switches between packet data and circuit switched access networks. In one example embodiment, the present innovations include an interworking system that supports voice call continuity for a user that moves between IP-CAN and CS networks (e.g., PSTN or GSM). In one example embodiment, the present innovations comprise a voice call continuity application server (VCC-AS) that serves as an anchor point for a voice call (i.e., it is the node from which a handover is initiated) and controls and handles voice calls to and from the user equipment (UE) regardless of the access network.
Owner:INTELLINET TECH
Method and apparatus for inter-technology handoff of a user equipment
InactiveUS20090080382A1Wireless network protocolsRadio/inductive link selection arrangementsApplication serverExchange network
In order to facilitate a handoff of a communication session between a legacy circuit switched network and a packet data network such as a 3GPP LTE, 3GPP2 UMB, or WiMAX network, which communication session is anchored in an IMS Voice Call Continuity Application Server (VCC AS), a Circuit Switched Proxy (CS Proxy) is provided in the packet data network that communicates with a Mobile Switching Center (MSC) of the circuit switched network. The CS Proxy allows the packet data network to communicate with the VCC AS, the MSC to communicate with the packet data network, and the MSC to communicate with the VCC AS via the packet data network, thereby allowing an exchange of handoff-related information between the packet data network and the VCC AS, the packet data network and the circuit switched network, and the circuit switched network and the VCC AS via the packet data network.
Owner:GOOGLE TECH HLDG LLC
System, Method and Computer-Readable Medium for Provisioning Dual-Homed Voice Call Continuity
ActiveUS20090052399A1Connection managementRadio/inductive link selection arrangementsHandoverSpeech sound
A system, method and computer-readable medium for concurrent support of Voice Call Continuity (VCC) capabilities in both the enterprise space and the carrier space are provided. The enterprise VCC functionality is used when the user is located in the enterprise domain which does not impact the carrier's network while the carrier VCC capability is used when the user is located in the carrier domain to support seamless handover between the wireless networks that the carrier may offer. The carrier VCC anchoring point and the enterprise VCC anchoring point may communicate with each other to confirm and inform the other anchoring point that a call handover is occurring or will occur.
Owner:TANGO NETWORKS
Method and apparatus for inter-technology handoff of a user equipment
InactiveUS20090073936A1Radio/inductive link selection arrangementsWireless commuication servicesApplication serverExchange network
In order to facilitate a handoff of a communication session between a legacy circuit switched network and a packet data network such as a 3GPP LTE, 3GPP2 UMB, or WiMAX network, which communication session is anchored in an IMS Voice Call Continuity Application Server (VCC AS), a Circuit Switched Proxy (CS Proxy) is provided in the packet data network that communicates with a Mobile Switching Center (MSC) of the circuit switched network. The CS Proxy allows the packet data network to communicate with the VCC AS, the MSC to communicate with the packet data network, and the MSC to communicate with the VCC AS via the packet data network, thereby allowing an exchange of handoff-related information between the packet data network and the VCC AS, the packet data network and the circuit switched network, and the circuit switched network and the VCC AS via the packet data network.
Owner:GOOGLE TECH HLDG LLC
Method for placing call in voice call continuity and terminal and server thereof
InactiveUS20070183410A1Interconnection arrangementsAssess restrictionComputer networkTelecommunications
A method, server and terminal for providing a Voice Call Continuity (VCC) service, are discussed. According to an embodiment, the terminal includes a storage unit to store operator policy information and user preference information, the user preference information including domain selection information specifying a user-preferred domain to be used when originating the outgoing call from the terminal, the operator policy information including domain selection information specifying a network-preferred domain to be used when originating the outgoing call from the terminal; and a controller to perform a domain selection for the outgoing call based on the user preference information or the operator policy information, depending on precedence information.
Owner:LG ELECTRONICS INC
Mobility solution selection for voice over eps
InactiveUS20100135246A1Well formedPromote coexistenceWireless commuication servicesNetwork connectionsSpeech soundHandover
A method and apparatus for determining handover (HO) signaling in a communications network. The method of the present invention examines the International Mobile Subscriber Identity (IMSI) of a user equipment (UE) during HO and, based on the examination, determines whether Single Radio Voice Call Continuity (SRVCC) or circuit switched (CS) over Long Term Evolution (LTE) using a Generic Access Network Controller (GANC) should be used in the HO.
Owner:TELEFON AB LM ERICSSON (PUBL)
Fast combinational voice call continuity from LTE to 2g/3g cs domain
ActiveUS20100165948A1Triggered quicklyWireless commuication servicesNetwork connectionsConnection typeNetwork control
The invention proposes a method for handing over a session between a source network which provides a first connection type domain and a target network which provides the first connection type domain and a second connection type domain, comprising informing a network node (e.g., a user equipment (UE)), before performing forming a handover from the source network to the target network, a preferred transfer domain in the target network. The invention also proposes a corresponding network node and a network control element.
Owner:NOKIA TECHNOLOGLES OY
System and Method for SR-VCC of IMS Emergency Sessions
ActiveUS20100054209A1Emergency connection handlingTelephonic communicationThird generationPacket switched
Methods and apparatuses for enabling Single Radio (SR)-Voice Call Continuity (VCC) of emergency calls are provided. More specifically, the methods and apparatuses provide continuity of IMS emergency sessions established in 4G access for mobility to 3G / 2G access. Generally, a Mobility Management Entity (MME) in the packet switch (PS) domain provides a handover request to a Mobile Switching Center (MSC) Server in the circuit switch (CS) domain. The handover request includes an indication that the call is an emergency call and may include an indication that a Packet Switched Network Induced Location Request (PS-NI-LR) or similar location reporting procedure is required and / or a Gateway Mobile Location Center (GMLC) address. The MSC Server facilitates the handover to the CS domain via the Mg and / or Mw interface.
Owner:FUTUREWEI TECH INC
Apparatus and method for providing voice call continuity using different networks in wireless communication system
InactiveUS20130100887A1Assess restrictionConnection managementCommunications systemCommunication unit
An apparatus and a method for providing call continuity in a wireless communication system are provided. The apparatus includes a first communication unit for setting a call with a counterpart terminal in a first network, a second communication unit for setting a call with the counterpart terminal in a second network while the call is set in the first network, and a control unit for terminating the call of the first network after the call setup is completed in the second network.
Owner:SAMSUNG ELECTRONICS CO LTD
A method and system for realizing continuous voice call in emergent service
InactiveCN101166364AImprove continuityEmergency connection handlingConnection managementApplication serverSpeech sound
The method includes steps: (1) urgent call center PSAP and one party in user equipment (UE) in source domain initiates urgency traffic request to the other party; (2) network entity determines whether the condition for triggering service of urgent call continuity is satisfied; if yes, the urgency traffic is anchored to voice call continuity (VCC) application server (AS); and the UE in source domain establishes talking connection with PSAP; (3) based on anchored the urgency traffic, VCC AS implements VCC service. The invention also discloses the system in use for implementing VCC in urgency traffic. Thus, the invention realizes VCC in switching time between source domain and target domain when urgency traffic is carrying on.
Owner:HUAWEI TECH CO LTD
Method, Device and System for Processing Reverse Single Radio Voice Call Continuity
ActiveUS20130128865A1Easy accessImprove sound qualityWireless commuication servicesResource informationHandover
The present invention provides a method, device, and system for processing reverse single radio voice call continuity. The method includes, before handing over a voice service from a CS domain network to a PS domain network, preconfiguring, in the PS domain network by a UE, information about resources needed for the voice service handover; and in the process of handing over, by the UE, the voice service from the CS domain network to the PS domain network, establishing a forwarding channel between a first network element of the PS domain and a second network element of the CS domain by using the preconfigured information about resources, where the forwarding channel is configured to forward voice service data between the UE and a peer UE after the UE accesses the PS domain network.
Owner:HUAWEI TECH CO LTD
Voice calling method, voice calling device and terminal
ActiveCN105722158AImprove call success rateImprove experienceConnection managementTransmissionCurrent cellCall forwarding
The invention provides a voice calling method, a voice calling device and a terminal, wherein the voice calling method comprises the following steps of: determining whether a signal radio voice call continuity (SRVCC) call forwarding instruction is received or not after a voice calling request of an IP multimedia subsystem IMS is initiated; falling back to a 3G network or a 2G network while determining that the SRVCC call forwarding instruction is received; judging whether configuration information of a current cell supports a circuit switch (CS) domain service or not according to the SRVCC call forwarding instruction; and if so, directly executing a CS voice call, otherwise, initiating a location registration process LAU in the current cell. By means of the technical scheme of the invention, the problem that the CS voice call is failed in the event that a 4G network only supports a PS service after being subjected to SRVCC call forwarding and falling back to a 3G or 2G network can be avoided; the calling success rate is increased; and the user experience in the voice calling process is improved.
Owner:YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
Method and system for realizing radio voice call continuity (RVCC)
ActiveCN102647693AAvoid switching failuresConnection managementCommmunication supplementary servicesRadio access networkSpeech sound
The invention relates to a method and a system for realizing radio voice call continuity (RVCC). The method comprises the following steps that a core network determines and sends single RVCC (SRVCC) ability information shared with user equipment (UE) initiating the radio voice to a current radio access network system, wherein the shared SRVCC ability information shows the SRVCC ability information to different radio access network systems; and after the UE initiates the radio voice, the current radio access network system judges to trigger SRVCC to a target cell when judging that the SRVCC ability information sent by the core network shows support of the SRVCC ability to the target cell corresponding to the inter-system measurement report. By adopting the method and the system, the current radio access network system can correctly trigger the SRVCC flow and avoid handover failure.
Owner:ZTE CORP
Mobile communication method and system for signalling information relating to network's capabilities
ActiveUS20090219843A1Increase heightGood serviceNetwork topologiesConnection managementMobile communication networkVoice call continuity
A mobile communications method and system for signalling information between a mobile terminal and a network element of a mobile communications network. The mobile terminal transmits information relating to the desirability and / or possibility to support Voice Call Continuity (VCC), to the network element during a communication, and the network element receives the information from the mobile terminal to use the information as a basis for deciding whether or not to anchor a call of the mobile terminal.
Owner:SAMSUNG ELECTRONICS CO LTD
Method and system for handover of video calls from a packet switched network to a circuit switched network in a single radio environment
A method and system for handover of a video call from a packet switched network to a circuit switched network by a first network entity associated with the packet switched network in a single radio environment is provided. A need to perform a video single radio voice call continuity (vSRVCC) handover from a packet switched network to a circuit switched network is detected during a video call session in the packet switched network. Accordingly, a vSRVCC handover request is transtnitted to a second network entity associated with the circuit switched network for performing the vSRVCC handover of the video call session where the vSRVCC handover request includes vSRVCC capabilities of a user equipment (UE) associated with the video call session.
Owner:SAMSUNG ELECTRONICS CO LTD
Switching method and device
ActiveCN101959269AImprove experienceShort switching timeAssess restrictionTelecommunicationsHigh rate
Owner:HUAWEI TECH CO LTD
Method and device for realizing congestion control
ActiveCN104038964AReduce loadMME GuaranteeNetwork traffic/resource managementCircuit switchingVoice call continuity
The embodiments of the present invention provide a method and device for achieving congestion control. The method comprises: determining one or more user equipment required to perform single radio voice call continuity (SRVCC) unloading; and sending an SRVCC unloading message to an evolved Node B (eNodeB) to which the one or more user equipment belongs, so as to enable the evolved Node B to switch the one or more user equipment to a circuit switching (CS) domain from a long term evolution (LTE) domain in the process of triggering the SRVCC switching. In the case of completing the SRVCC switching, the one or more user equipment can be switched to VoCS user equipment from VoLTE user equipment. Thus, the purposes of reducing the load of an LTE cell and guaranteeing the QoS of one or more user equipment can be achieved.
Owner:HUAWEI TECH CO LTD
Single radio voice call continuity (sr-vcc)
ActiveUS20100290433A1Improve performanceWireless commuication servicesCommunications systemRadio access network
The present invention discloses a node (207, 217) for achieving co-existence of single radio voice call continuity, SR-VCC, solutions in a communication system between a source cell of a first radio access network that supports packet switched voice and a target cell of a second radio access network that supports at least circuit switched voice. The node (207, 217) is operable to perform bearer splitting by separating voice bearers from non-voice bearers based on information about support for dual transfer mode, packet switched handovers and voice over internet protocol related enhancements in the target cell.
Owner:APPLE INC
Determination method and device for voice communication network
ActiveCN107454633AReduced signaling processReduce loadWireless communicationSignal qualitySignal-to-noise ratio (imaging)
The invention discloses a determination method and device for a voice communication network. The method comprises the steps that a terminal in support of a VoLTE (Voice over Long Term Evolution) obtains a network frequency point at which the terminal currently resides, and the voice indicator information and signal quality information of the network frequency point, when a voice communication demand is detected, wherein the signal quality information may comprise reference signal receiving power and a signal to noise ratio, and the voice indicator information may comprise a call success rate, a call drop rate and an SRVCC (Single Radio Voice Call Continuity) switching rate; and the terminal determines the voice communication network of the terminal based on the voice indicator information and the signal quality information. In this way, the terminal can carry out comprehensive judgment according to the voice indicator information and signal quality information corresponding to the frequency point of a service cell of the terminal, the suitable voice communication network is selected, the voice call quality of the terminal is improved, moreover, SRVCC switching signal processes are reduced, and network loads are reduced.
Owner:HUAWEI DEVICE CO LTD
Link Quality Based Single Radio-Voice Call Continuity and Packet Scheduling for Voice over Long Term Evolution Communications
PendingUS20160353316A1Improve abilitiesNetwork traffic/resource managementCellular radioPacket scheduling
Wireless devices, networks and methods may operate to have a wireless device cause a base station to trigger voice call continuity handovers responsive to the quality of the cellular radio link in addition to the base station triggering such handovers based on location or mobility. Furthermore, wireless communication devices may also perform monitoring of multiple buffers operating within the wireless communication device and associated with different respective communication layers, in addition to monitoring the quality of the cellular radio link, to perform intelligent dropping / discarding and / or scheduling of packets at the wireless communications device. Any one or more of these features may improve the ability of the wireless communications device to achieve stated Voice over Long Term Evolution (VoLTE) performance benchmarks in the context of the realities of current VoLTE networks.
Owner:APPLE INC
Method and system for providing voice call continuity
InactiveUS7885234B2Reduce the amount requiredImprove coordinationWireless commuication servicesNetwork connectionsProcedure callsHandover procedure
A method and system for providing circuit-switched to IP Multimedia Subsystem voice call continuity with a single radio are provided. The exemplary embodiment takes advantage of a standard RANAP signaling procedure called “directed retry” to perform a much better coordination between the change in radio mode and the transfer of the media path. With the use of “directed retry”, the transfer of the media path does not begin until the handover procedure is complete, thus significantly reducing the likely amount of media disruption.
Owner:ALCATEL-LUCENT USA INC +1
Method of handling call in handover in wireless communication system and wireless communication device using the same
ActiveUS20100296484A1Smooth handoverWireless network protocolsWireless commuication servicesCommunications systemOperation mode
A method of handling at least a call in handover in a wireless communication system and a communication device using the same are proposed. The wireless communication system includes at least a wireless communication network and a wireless communication device. The method includes the following steps. First, a wireless communication device receives a message for switching at least a packet-switched (PS) call to at least a circuit-switched (CS) call from the wireless communication network. Further, the wireless communication device sets a stream identifier of each of the CS calls to an identifier value. The method enables smooth single radio voice call continuity (SRVCC) handover from the PS call in one wireless communication network to the CS call in another wireless communication network. In addition, the method also enables SRVCC multicall handover from the PS call in one network operation mode to the CS call in another wireless communication network.
Owner:HTC CORP
Method, equipment and system for processing voice call continuity service
ActiveCN102088681ANo longer affects the voice switching delayQuality improvementConnection managementCommmunication supplementary servicesTime delaysMobility management
The invention provides a method, equipment and system for processing a voice call continuity service. The method comprises the following step that: in a process which is initiated by user equipment (UE) and is used for switching a voice service from a packet-switched (PS) domain network to a circuit-switched (CS) domain network, a mobility management entity (MME) controls to establish a data forwarding channel between a first network element of the PS domain network and a second network element of the CS domain network, wherein the process for switching the voice service from the PS domain network to the CS domain network comprises domain switching and access technology switching; and the data forwarding channel is used for forwarding voice data of the UE before the domain switching is completed. In the embodiment of the invention, the data forwarding channel between the PS domain network and the CS domain network which are used for establishing voice data is controlled before switching and conversion operation of single radio voice call continuity (SRVCC) is completed in the process which is initiated by the UE and is used for switching the voice service from the PS domain network to the CS domain network, so that longer interrupt time delay generated by the domain switching does not influence the length of the voice switching time delay of the SRVCC anymore, and the quality of the voice continuity of the SRVCC is enhanced.
Owner:HUAWEI TECH CO LTD
Domain switch method in continuous voice call service
InactiveCN101262414ASatisfy switching needsSolve the defect of occupying too many number resourcesHybrid switching systemsData switching by path configurationTelecommunicationsA domain
The invention discloses a domain switching method in a voice call continuous service, which comprises the following steps: a VCC application obtains a VDN from a presetting VDN set to distribute the VDN to an IMS dialogue and VCC users are in the active IMS dialogue; VCC users apply the distributed VDN as a called number to make a voice call from a CS domain, requesting the switching of the IMS dialogue to the CS domain, and a call used for making the voice call builds a calling number in request message as the number of users asking for switching; a VMSC triggers a CAMEL service calling process and sends the calling number in the switching request and the VDN to the VCC application; the VCC application determines the IMS dialogue to be switched according to the calling number and the VDN, and distributes corresponding DTF PSI and sends back to the VMSC; the VMSC uses the DTF PSI as the called number and sends a dialogue establishment request to the VCC application; the VCC application determines the IMS dialogue to be switched according to the DTF PSI.
Owner:ZTE CORP
Method and system for implementing call forwarding service, and voice call continuous server
ActiveCN101198089AQuality improvementSimplified routingSpecial service for subscribersRadio/inductive link selection arrangementsApplication serverCall forwarding
The invention provides a method of fulfilling the call forwarding service, initially, a first user terminal and a second user terminal establish a session, the call forwarding of the second user terminal includes that: the second user terminal transmits a call forwarding service request to a VCCAS; the VCCAS generates a call forwarding message containing the first user terminal and an address of a third user terminal according to the received call forwarding service request, and the message is transmitted to the first user terminal after an application server shielding the address; the first user terminal establishes a session with the third user terminal through the application server according to the received call forwarding message. The invention also provides a system and the VCCAS of fulfilling the call forwarding service. The route can be simplified while the call forwarding service is fulfilled by adopting the invention, thereby reducing the delay and improving the quality of a link.
Owner:HUAWEI TECH CO LTD
Switching method, communication system and related equipment
The invention relates to the technical field of communication, and discloses a switching method, a communication system and related equipment. The switching method comprises the following steps of: receiving a forward relocation request which comprises a service instruction; determining the type of the service instruction; when the service instruction is a single radio voice call continuity (SRVVC) service instruction, sending the forward relocation request to an SRVCC mobile switching center server; and when the service instruction is a CSoPS service instruction which is connected to a data field core network through a circuit switch access network, sending the forward relocation request to a mobile switching center server of a core network circuit switch in a target system. Through the technical scheme provided by the embodiment of the invention, the switching mode needing to be adopted can be accurately determined.
Owner:HUAWEI TECH CO LTD
Method and device for maintaining call continuity
Embodiments of the present invention relates to a method and a device for maintaining call continuity. The method comprises: receiving a first Internet protocol multimedia subsystem (IMS) session switching message sent by a access switching entity, the first IMS session switching message being used for indicating a first session is replaced by a second session during a switching process of single radio voice call continuity (SRVCC), and the first IMS session switching message carrying a session identifier of the first session; searching for the first session according to the session identifier of the first session and acquiring a session description protocol (SDP) message corresponding to a remote media path of the first session; sending a second IMS session switching message to a service centralization and continuity application server (SCCAS), the second IMS session switching message carrying a SDP message corresponding to the remote media path of the first session. In the embodiments of the invention, the continuity of maintaining user calls during the SRVCC process is realized.
Owner:HUAWEI TECH CO LTD
Method and device for switching voice
The embodiment of the invention provides a method and a device for switching CS voice in a UE roaming scene. The method mainly comprises the following steps that: a VCC AS (voice call continuity application server) of the roaming place of UE receives a CS (circuit switching) voice call signaling sent by a mobile switching center (MSC) of the home place of the UE; the VCC AS establishes a CS voice call supporting an IP multimedia subsystem (IMS) in a first network according to the CS voice call signaling, and performs session anchoring on the CS voice call; and the UE accesses the IMS through a second network and establishes a new voice call when moving from the first network to the second network in the roaming place, and the VCC AS replaces the CS voice call with the new voice call. Due to the adoption of the method and the device, the CS voice call can be switched from the first network supporting the IMS to the second network in the UE roaming scene so as to ensure the continuity of the CS voice call in the UE roaming scene.
Owner:HUAWEI TECH CO LTD
Single Radio Voice Call Continuity For Emergency Callback Or Click-To-Dial Sessions
An example apparatus is caused to receive a message inviting a user equipment (UE) to participate in an emergency communication session with an originating node, where the user equipment is registered with an Internet Protocol Multimedia Subsystem (IMS). The apparatus is caused to identify a type of registration of the UE with the IMS, and select a transfer function of the IMS to anchor the emergency communication session based on the identified type of registration of the user equipment with the IMS. The transfer function may be a domain transfer function or emergency access transfer function of the IMS. The apparatus is also caused to prepare the message for transmission to the selected transfer function to thereby enable the selected transfer function to anchor the emergency communication session and further communicate with one or more other components of the IMS to establish the emergency communication session with the user equipment.
Owner:NOKIA TECHNOLOGLES OY
Single radio voice call continuity transfer method, equipment and system
The embodiment of the invention provides a single radio voice call continuity (SRVCC) transfer method, equipment and system. According to the method, P-CSCF equipment obtains a session transfer number for SRVCC (STN-SR), the STN-SR is sent to PCRF equipment so that the PCRF equipment can send the STN-SR to an MME for storage, and therefore by means of the concise method, the situation that E-CSCF / EATF equipment chosen by I-CSCF is consistent with E-CSCF / EATF equipment chosen by call establishment is guaranteed.
Owner:HUAWEI TECH CO LTD
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