[go: up one dir, main page]

WO2015069076A1 - Procédé de fourniture continue de service d'appel d'urgence dans un réseau à commutation par paquets - Google Patents

Procédé de fourniture continue de service d'appel d'urgence dans un réseau à commutation par paquets Download PDF

Info

Publication number
WO2015069076A1
WO2015069076A1 PCT/KR2014/010738 KR2014010738W WO2015069076A1 WO 2015069076 A1 WO2015069076 A1 WO 2015069076A1 KR 2014010738 W KR2014010738 W KR 2014010738W WO 2015069076 A1 WO2015069076 A1 WO 2015069076A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
call
emergency call
volte
progress
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2014/010738
Other languages
English (en)
Korean (ko)
Inventor
백영교
정상수
조성연
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020140021560A external-priority patent/KR102179048B1/ko
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority to ES14859481T priority Critical patent/ES2851388T3/es
Priority to EP14859481.5A priority patent/EP3068151B1/fr
Priority to US15/033,712 priority patent/US9872317B2/en
Priority to CN201480061384.6A priority patent/CN105706471A/zh
Publication of WO2015069076A1 publication Critical patent/WO2015069076A1/fr
Anticipated expiration legal-status Critical
Priority to US15/869,377 priority patent/US10448450B2/en
Priority to US16/598,377 priority patent/US10701758B2/en
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections

Definitions

  • the present specification is a method for continuously providing an emergency call service through a packet network in a mobile communication network. Specifically, an emergency call is stopped due to an incoming call while providing an emergency call service through a packet network. A method and apparatus for solving the problem.
  • mobile communication systems have been developed to provide voice services while guaranteeing user activity.
  • mobile communication systems are gradually expanding not only voice but also data services, and now they have developed to the extent that they can provide high-speed data services.
  • LTE Long Term Evolution
  • 3GPP The 3rd Generation Partnership Project
  • LTE is a technology that implements high-speed packet-based communication with a transmission rate of up to 100 Mbps.
  • various methods are discussed.
  • the network structure can be simplified to reduce the number of nodes located on the communication path, or the wireless protocols can be as close to the wireless channel as possible.
  • the current LTE system may be configured to allow emergency call service or VoLTE service in some areas of the network and disallow emergency call service or VoLTE service in the remaining areas.
  • the VoLTE voice call is connected to the terminal in the VoLTE service allowance area, and the terminal moves to the VoLTE service disallowed area, even when the VoLTE voice call continues, it is in progress when a new voice call arrives in the CS domain.
  • the VoLTE voice call is dropped.
  • an emergency call is connected to a terminal in an emergency call service allowance area, and the terminal moves to an emergency call service disallowed area, even if the emergency call continues, the emergency call in progress when the voice call arrives in the CS domain is disconnected. Since the disconnection of voice calls can cause serious problems, it is necessary to study how to solve them.
  • the present specification allows certain network areas and some network areas to be allowed to be started when certain network areas are allowed to be started in some network areas, but not in the other network areas.
  • a TA in which a terminal does not support a packet-based voice service based on a message received from a home subscriber server (HSS) Recognizing a location in a tracking area; determining whether a VoLTE call or an emergency call is in progress for the terminal when receiving a call request message for the terminal; and VoLTE for the terminal. If a call or emergency call is in progress, selecting a packet switched domain as the domain for the received call request message.
  • HSS home subscriber server
  • a network device supporting a packet-based voice service may include a terminal that transmits and receives data to and from another device based on a message received from a home subscriber server (HSS). Recognizing that the packet is located in a TA (Tracking Area) that does not support the packet-based voice service, and receives a call request message for the terminal determines whether the VoLTE call or emergency call is in progress (ongoing) for the terminal And a controller for selecting a packet switched domain as a domain for the received call request message when a VoLTE call or an emergency call is in progress for the terminal.
  • HSS home subscriber server
  • FIG. 2 is a flowchart illustrating a communication method according to a first embodiment of the present invention
  • FIG. 4 is a flowchart illustrating a communication method according to a third embodiment of the present invention.
  • FIG. 6 is a view showing a configuration of a terminal operating according to a preferred embodiment of the present specification.
  • FIG. 7 is a flowchart illustrating a communication method according to a fourth embodiment of the present invention.
  • an OFDM-based wireless communication system in particular, the 3GPP EUTRA standard will be the main target, and as a kind of specific service, the main target will be VoLTE or emergency call.
  • the subject matter is applicable to other communication systems and services having a similar technical background and a channel form with slight modifications without departing from the scope of the present disclosure, which is obvious to those skilled in the art. It will be possible to judge.
  • the technology described for VoLTE herein may be applied to other voice providing services (eg, Voice over Wi-Fi) based on IMS without major changes.
  • FIG. 1 is a diagram illustrating a structure of a general LTE mobile communication system.
  • a radio access network of an LTE mobile communication system includes a next-generation base station (evolved Node B, EUTRAN, hereinafter referred to as ENB or Node B) 110, a mobility management entity (MME) 120, and an S-GW. (Serving Gateway) 130.
  • a next-generation base station evolved Node B, EUTRAN, hereinafter referred to as ENB or Node B
  • MME mobility management entity
  • S-GW Serving Gateway
  • the S-GW 130 is a device for providing a data bearer, and generates or removes a data bearer under the control of the MME 120.
  • An application function (AF) 140 is a device that exchanges information related to a user and an application at an application level.
  • the AF 140 may be, for example, a Service Centralization and Continuity Application Server (SCC AS) for supporting a voice service through a packet network.
  • SCC AS Service Centralization and Continuity Application Server
  • the SCC AS may perform a function of indicating a pageable domain of a terminal to be called through T-ADS (Terminating Access Domain Selection).
  • the Policy Charging and Rules Function (PCRF) 150 is a device that controls a policy related to a quality of service (QoS) of a user, and corresponds to a policy and charging control (PCC) rule corresponding to the policy. Is transmitted to and applied to the P-GW 160. Policy Charging and Rules Function (PCRF) 150 is an entity that collectively controls QoS and billing for traffic.
  • QoS quality of service
  • PCC policy and charging control
  • the EPS bearer corresponds to a Packet Data Protocol (PDP) context of a General Packet Radio Service (GPRS) system.
  • PDP Packet Data Protocol
  • GPRS General Packet Radio Service
  • One EPS bearer belongs to a PDN connection, and the PDN connection may have an access point name (APN) as an attribute.
  • APN access point name
  • IMS IP Multimedia Subsystem
  • VoIP Voice over LTE
  • the PDN connection should be created using a well-known IMS APN.
  • the mobile communication network may be configured such that an LTE system and a legacy system coexist. That is, some network operators of a mobile communication system may install a network in which emergency call service or VoLTE is supported and a network in which emergency call service or VoLTE is not supported. More specifically, based on Voice over LTE (VoLTE), a type of voice service, a mobile communication network allows the use of an emergency call service or a VoLTE service in some areas (TA) and an emergency in the other areas. Instead of disallowing call service or VoLTE service, it may be configured to allow CS (Circuit Switched) emergency call or CS voice call using legacy network.
  • VoLTE is a method of providing voice services using a packet switched (PS) network and an IMS network.
  • whether the emergency call service or the VoLTE service is supported may be different for each network configuration area, for example, for each cell or base station, and for larger units, for each tracking area (TA) or MME pool area. can be different.
  • TA tracking area
  • the core network node (for example, MME) is available for emergency call service when the user terminal performs an emergency call service or a location registration (attach or tracking area update (TAU)) procedure in the VoLTE support area.
  • An identifier indicating) or an identifier indicating that an IMS-based voice service is available is provided to the terminal.
  • the core network node may designate an identifier indicating that the emergency call service is unavailable or an identifier indicating that the IMS-based voice service is unavailable. Provided to the terminal.
  • a domain for providing a voice service (PS for VoLTE, CS for the remaining areas) may be changed.
  • the I-CSCF / S-CSCF determines which domain (PS or CS) to page the voice call to the T-ADS in the procedure of processing the voice call request to the terminal.
  • Ask When the T-ADS informs the I-CSCF / S-CSCF of the domain to process the voice call by referring to the result collected from the entities of the network, the I-CSCF / S-CSCF refers to the domain information and requests the voice call. Perform the procedure in accordance with
  • Emergency call service or VoLTE provides emergency call service or VoLTE service for the voice call currently in progress for the voice call user's sensibility when the user crosses the two areas as above while the user has the active voice call. You can keep it going. Accordingly, the user terminal may maintain the ongoing emergency call or VoLTE voice call as it is even after moving to the emergency call or VoLTE non-allowed area after starting the emergency call or VoLTE voice call in the emergency call or VoLTE allowed area.
  • the MSC / VLR Mobile Switching Center / Visitor Location Register
  • the MSC / VLR sends a CS paging request to the MME.
  • EMM-CONNECTED mode the terminal is in the connected mode (EMM-CONNECTED mode).
  • the MME sends a CS SERVICE NOTIFICATION message to the terminal and sends voice call paging through the CS domain.
  • the terminal moves to another network from which the emergency call or voice call via VoLTE is being used while performing CSFB for processing voice call paging, and as a result, the emergency call may be disconnected.
  • a voice call is started in a TA supporting an IMS-based emergency call or VoLTE voice service, and a method of continuously maintaining an ongoing voice call even when a terminal moves to an unsupported TA and performs location registration is considered. do.
  • the terminal in an emergency call or a TA in which a VoLTE is not supported receives a CS SERVICE NOTIFICATION message from the MME while maintaining an emergency call or VoLTE call
  • the CSFB is rejected to the VoLTE to the MME.
  • the terminal informs the MSC / VLR that the MME requested CS paging is in progress so that the terminal rejects the received call.
  • an embodiment of the present disclosure may allow a voice call to be continuously performed even in the above case, and notify the other party that has called the terminal that the terminal is currently performing a call.
  • the above-described embodiment of the present invention specifies that the VoLTE emergency call is applicable not only to the VoLTE emergency call but also to the ongoing VoLTE general call.
  • the MME when the MSC / VLR requests CS paging for a UE in a TA in which an emergency call or a VoLTE is not supported, the MME is assigned to a bearer of the UE.
  • the terminal is called an emergency call or VoLET by referring to all or a part of whether the access point name (APN) is emergency, whether the QCI (QoS Class Identifier) # 1, and whether the Allocation and Retention Priority (ARP) is emergency.
  • ARP Allocation and Retention Priority
  • the MME When the UE is in an emergency call or VoLTE call, the MME notifies the MSC / VLR that the CS paging request is in progress. In this case, the MSC / VLR may perform a procedure such as rejecting an incoming call so that a voice call may be continuously performed and may notify the other party calling the terminal that the call is in progress.
  • the above-described embodiment of the present invention specifies that the VoLTE emergency call is applicable not only to the VoLTE emergency call but also to the ongoing VoLTE general call.
  • the Home Subscriber Server requests the MME for information on whether an emergency call or VoLTE call is in progress for a UE that is Combined and HMS registered with the HSS. Update the received information.
  • the T-ADS requests the HSS whether the emergency call or the VoLTE call proceeds to the terminal, and updates the received information.
  • the S-CSCF / I-CSCF requests domain selection information from the T-ADS, if the terminal is in an emergency call or a VoLTE call, the S-CSCF / I-CSCF Send a response to select the PS domain. In this way, S-CSCF / I-CSCF prevents paging to the CS domain so that voice calls can continue.
  • FIG. 2 is a flowchart illustrating a communication method according to a first embodiment of the present invention.
  • FIG. 2 is a flowchart illustrating a communication method in which a terminal rejects a CS voice call by recognizing an emergency call or a VoLTE call.
  • the UE may determine that the emergency call or VoLTE is still in progress when the UE does not receive a notification from the IMS layer that the emergency call or VoLTE service is no longer needed (203).
  • the terminal 200 may determine whether an emergency call or VoLTE is in progress by asking the IMS layer whether an emergency call or VoLTE is in progress.
  • the terminal 200 may perform a procedure of rejecting a CS voice call.
  • the terminal 200 receiving the CS SERVICE NOTIFICATION message displays the user's phone number and the like delivered through the CS SERVICE NOTIFICATION message to reject the CS voice call when the user wants to reject the CS voice call.
  • the procedure can be performed.
  • the terminal 200 may include the CSFB response IE in the EXTENDED SERVICE REQUEST message, and set the CSFB response value to 000 to transmit to the MME 220 (204).
  • the terminal 200 may inform the MME 220 that an emergency call or VoLTE call is in progress.
  • the EXTENDED SERVICE REQUEST message may be expressed as shown in Table 1.
  • the terminal 200 may indicate that an emergency call or VoLTE call is in progress by determining a value not used previously among the CSFB response values of the existing CSFB response IE. For example, the terminal 200 may set the CSFB response value to 100 as shown in Table 3 to reject the CS voice call, and may indicate that the reason for rejection is an emergency call or a VoLTE call in progress.
  • the MSC / VLR 240 may reject the received CS voice call. In this case, the MSC / VLR 240 may indicate that the terminal that has sent the CS voice call is busy.
  • the method is applicable not only to VoLTE emergency calls but also to situations where VoLTE general calls are in progress.
  • the terminal 300 when the terminal 300 coupled to the CS and the PS moves to a TA that does not exist in the TA list while the emergency call or the VoLTE call is in progress, the terminal 300 performs the combined TAU. 301.
  • the MME 320 determines the emergency call or VoLTE call progress of the terminal 300 (321).
  • the terminal 300 transmits an ESM NOTIFICATION message or the like to the MME 320 when the emergency call or VoLTE call is started or terminated as shown in Table 6, indicating that the emergency call or VoLTE call has been started or terminated. You can inform.
  • the MME 320 may determine the emergency call or VoTEL call progress of the terminal 300 through the ESM NOTIFICATION message received from the terminal 300.
  • the value of the notification indicator included in the ESM NOTIFICATION message may include information for notifying the MME 320 that an emergency call session is created or terminated as shown in Table 7.
  • the terminal 300 may inform the MME 320 whether the emergency call or the VoLTE call proceeds using the ESM NOTIFICATION message.
  • the terminal 300 transmits an ESM NOTIFICATION message to the MME 320 when the emergency call or VoLTE call starts or ends, and the MME 320 continuously proceeds with the emergency call or VoLTE call of the terminal 300. You can tell. This will be described in more detail in the fourth embodiment.
  • the terminal 300 may transmit whether the terminal proceeds with an emergency call or a VoLTE call to the target MME.
  • the MME 320 transmits a CS paging rejection message to the MSC / VLR 340 in response to the paging request (322).
  • the CS paging rejection message includes a value indicating that an emergency call or a VoLTE call is in progress for the rejection reason.
  • the CS paging rejection message may be expressed as shown in Table 4, and the reason for rejection (i.e. SGs Cause) may be expressed as shown in Table 5.
  • the MSC / VLR 340 may reject the received CS voice call. In this case, the MSC / VLR 340 may indicate that the terminal that has sent the CS voice call is busy (343). .
  • the method specifies that the VoLTE emergency call is applicable not only for VoLTE emergency calls but also for ongoing situations.
  • FIG. 4 is a flowchart illustrating a communication method according to a third embodiment of the present invention. Specifically, FIG. 4 is a flowchart illustrating a method for recognizing VoLTE emergency call service in T-ADS so that CS paging does not occur.
  • the terminal 400 completes registration with the IMS (401), and is attached to the CS and the PS that are serving the emergency call or VoLTE call. If the terminal 400 moves to a TA that does not exist in the TA list, the terminal 400 performs a combined TAU. In detail, the terminal 400 transmits a TAU request message to the MME 420 (402), and the MME 420 receiving the TAU request message requests a location update from the HSS 440 (421).
  • the MME 420 determines whether an emergency call or a VoLTE call is currently in progress in the terminal 400.
  • 4 illustrates that the MME 420 determines whether an emergency call or a VoLTE call is currently in progress in the terminal 400, but is not limited thereto.
  • Other network devices e.g., SCC AS / T-ADS 460 may be implemented to determine this.
  • the MME 420 may send all of the information indicating whether the APN assigned to the bearer is an emergency call, whether the assigned ARP is an emergency call, whether the assigned QCI is # 1, etc.
  • the terminal 400 determines whether an emergency call or a VoLTE call is currently in progress.
  • the terminal 400 may inform the MME 320 whether the emergency call or the VoLTE call proceeds using the ESM NOTIFICATION message.
  • the terminal 400 transmits an ESM NOTIFICATION message to the MME 420 when the emergency call or VoLTE call starts or ends, and the MME 420 continuously proceeds with the emergency call or VoLTE call of the terminal 400. You can tell. This will be described in detail later in the fourth embodiment.
  • the terminal 400 may transmit whether the terminal proceeds with an emergency call or a VoLTE call to the target MME.
  • the MME 420 may use the VoLTE in the TA in which the emergency call service or VoLTE is not supported in the location update request message. It may include an indicator (VoLTE emergency call status) for indicating that the emergency call is in service.
  • the HSS 440 receiving the location update request message maintains the VoLTE emergency call status and then updates whether the VoLTE emergency call proceeds through steps 442 and 443 or steps 423 and 444.
  • the ESM NOTIFICATION message as disclosed may be transmitted to the MME 420 to inform the MME 420 that the emergency call has been started or ended. That is, although IMS VoPS or EMC BS is set to 0 in the TAU accept message, it is recognized that emergency call or VoLTE is not supported in the current TA. However, when an emergency call or VoLTE call is still in progress, the UE returns to the MME 420. An ESM NOTIFICATION message can be sent to indicate that an emergency or VoLTE call has started. Receiving the ESM NOTIFICATION message, the MME 420 may transmit information about whether an emergency call or a VoLTE call is progressed to the HSS 440.
  • the HSS 440 may transmit a PS emergency status request message to the MME 420 periodically or aperiodically to update the VoLTE emergency call status (442).
  • the MME 420 receives a PS emergency status request message from the HSS 440 or transmits information on whether VoLTE emergency call is progressed periodically or aperiod to the HSS 440 through a PS emergency status report message (423).
  • the HSS 440 may transmit a confirmation message 444 for the PS emergency status report message 423 to the MME 420.
  • the HSS 440 Upon receiving the request message Sh-Pull request, the HSS 440 requests the necessary information from another network entity such as the information stored therein or the MME 420, if necessary, and collects the collected information through the SCC-AS / T-ADS 460. ) Is sent in the message Sh-Pull response (433).
  • the HSS 440 may collect information on whether the emergency call or VoLTE call progress for the terminal from the MME 420 through the step 442, 423 or step 423, 444.
  • the SCC-AS / T-ADS 460 that receives the information message Sh-Pull response 443 for the terminal determines whether a VoLTE call or an emergency call is in progress for the terminal, A domain for serving a voice call to the terminal is selected. For example, when the terminal 400 is recognized as a combined attached terminal in which a VoLTE emergency call is in progress (462), the SCC-AS / T-ADS 460 may be able to page a voice call through the PS domain.
  • the INVITE message may be sent to the / I-CSCF 480 (463).
  • the S-CSCF / I-CSCF 480 receiving the INVITE message performs a VoLTE voice call setup process according to an existing procedure.
  • the MME 420 notifies the HSS 440 that the VoLTE call or emergency call is completed through a PS emergency status report message (424).
  • the HSS 440 may transmit a confirmation message for the PS emergency status report message to the MME 420 (445).
  • FIG. 5 is a diagram illustrating interworking between a 3GPP modem layer and an IMS / connection manager layer inside a user terminal. Specifically, FIG. 5 is a diagram illustrating interworking between a 3GPP modem layer 520 that is in charge of a 3GPP access network and an IMS / connection manager layer 500 that manages IMS and overall communication functions within a user terminal. .
  • the two layers may be directly connected or may have a RIL (Radio Interface Layer) in between.
  • the 3GPP modem Notifies the IMS / Connection Manager that the emergency call service or IMS VoPS is no longer supported via the RIL layer or using the Application Programmable Interface (API) (522).
  • API Application Programmable Interface
  • the IMS / Connection Manager sends a SIP message requesting IMS deregistration when the current voice call is terminated (501), and sends an emergency call service to the 3GPP modem when the emergency call or VoLTE call ends.
  • the IMS / Connection Manager can also inform the 3GPP modem that the voice domain should be changed to CS.
  • the 3GPP modem layer changes the voice domain to CS (523) and, if necessary (when the preceding TAU procedure is not a combined type), performs a combined TAU procedure (524).
  • the interworking between the IMS / connection management layer and the 3GPP modem layer is described as a request / command and an operation thereof.
  • this is only an embodiment. Receiving that IMS VoPS is not supported, and based on this, changing the domain of the IMS deregistration process and subsequent voice service to CS (or CSFB) may also apply to operations with minor variations.
  • CS or CSFB
  • a network device may include a wireless transceiver 600, a controller 620, and a storage 640.
  • the network device of FIG. 6 may correspond to any one of a UE, an MME, an HSS, an SCC AS / T-ADS, and an S-CSCF / I-CSCF, but is not limited thereto.
  • the functions of each unit will be described based on the terminal.
  • the wireless transceiver 600 receives information on whether IMS VoPS is supported or emergency call support from the network, and transmits and receives a registration related message under the control of the controller 620.
  • the controller 620 determines whether to perform an IMS deregistration process, performs a determination on whether a VoLTE voice call or a VoLTE emergency call is in progress according to the above-described embodiments, or determines a domain for a voice service. Perform the change operation.
  • the storage unit 640 may store various types of information necessary for the operation of the terminal according to an embodiment of the present disclosure. For example, whether TA supports IMS VoPS or whether VoLTE voice call or VoLTE emergency call is in progress may be stored for each TA.
  • the wireless transceiver 600 of FIG. 6 corresponds to the 3GPP modem layer 520 of FIG. 5, and the controller 620 of FIG. 6 corresponds to the IMS / connection management layer of FIG. 5. Can be.
  • the network device other than the terminal may also include a wireless transceiver 600, a controller 620, and a storage unit 640, and the units may be implemented in various embodiments of the present invention. You can perform the function according to the example.
  • FIG. 7 is a flowchart illustrating a communication method according to a fourth embodiment of the present invention. Specifically, FIG. 7 is a flowchart illustrating a method of recognizing an emergency call or VoLTE service in T-ADS so that CS paging does not occur.
  • a fourth embodiment of the present invention will be described by taking an emergency call as an example for convenience of explanation, but the following embodiments may be applied to not only an emergency call but also a VoLTE emergency call and a VoLTE general call.
  • the terminal 700 completes IMS emergency call registration and starts an emergency call (701).
  • the terminal 700 recognizes the start of an emergency call by receiving a SIP 200 OK message indicating that an emergency call has been started, and the ESM NOTIFICATION message as shown in Table 6 to notify the MME 720 that the emergency call service has been started. 720).
  • the value of the notification indicator included in the ESM NOTIFICATION message may include information for notifying the MME 720 that an emergency call session is generated as shown in Table 7.
  • the MME 720 stores information indicating that an emergency call is in progress in the terminal 700.
  • the terminal 700 may send the ESM NOTIFICATION message to the MME 720 after completing the TAU process in step 702 so that the target MME can continuously know the situation of the progress of the emergency call service.
  • the MME 720 When the MME 720 receives the VoPS status request message 741 from the HSS 740, the MME 720 transmits the VoLTE call to the HSS 740 through the VoPS status report message 722. To pass.
  • the HSS 740 is a VoLTE.
  • Information on whether the call or emergency call is in progress may be transmitted to the SCC AS / T-ADS 760 (742).
  • an INVITE message including information about the terminal 700 arrives at the S-CSCF / I-CSCF 780 to make a call to the terminal 700 (781), S-CSCF / I
  • the CSCF 780 sends the INVITE back to the SCC-AS / T-ADS 760 (782).
  • the SCC-AS / T-ADS 760 sends a message Sh-Pull request to the HSS 740 to request not only subscription information but also information on the location of the terminal and information on whether a VoLTE call or an emergency call is in progress in order to service a voice call. (761).
  • the HSS may collect information on whether the emergency call proceeds from the MME 720 through steps 741 and 722.
  • the SCC-AS / T-ADS 760 that receives the information message Sh-Pull response 742 for the terminal selects a domain for serving a voice call to the terminal using the information. For example, when the terminal 700 is recognized as a combined attached terminal in which a VoLTE emergency call is in progress (762), the SCC-AS / T-ADS 760 can be used to page a voice call through the PS domain.
  • the INVITE message may be sent to the / I-CSCF 780 (763).
  • the SCC-AS / T-ADS 760 sends a SIP 486 (User Busy) message to the S-CSCF / I-CSCF (User Busy) message to prevent the voice call connection attempt from occurring in the VoLTE or emergency call terminal 700. And 780 to reject the voice call attempt.
  • SIP 486 User Busy
  • I-CSCF User Busy
  • the S-CSCF / I-CSCF 780 receiving the INVITE message performs a VoLTE voice call setup process according to an existing procedure.
  • the terminal 700 may inform the MME 720 that the emergency call has ended via SIP 200 OK or SIP BYE.
  • the terminal 700 sends an IMS Deregistration message to the MME 720 and recognizes that the emergency call service is no longer used, the ESM NOTIFICATION shown in Table 6 to notify the MME 720 that the emergency call service is terminated. Send a message or the like (705).
  • the value of the notification indicator included in the ESM NOTIFICATION message may include information for notifying the MME 720 that the emergency call session is terminated as shown in Table 7.
  • the MME 720 stores that the emergency call has ended for the terminal 700.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

L'invention concerne un procédé et un dispositif qui permettent de maintenir un service d'appel d'urgence dans un réseau à commutation par paquets dans un réseau de communication mobile. Un terminal utilisant la voix sur LTE (VoLTE) reçoit des informations d'identification pour indiquer si la voix sur PS (VoPS) de sous-système multimédia IP (IMS), IMS VoPS, est prise en charge par un réseau pour déterminer si l'IMS VoPS du réseau est pris en charge, et effectue une radiomessagerie pour un appel vocal de réseau à commutation par circuits (CS) selon le résultat de détermination si le service d'appel d'urgence continue dans le réseau à commutation par paquets.
PCT/KR2014/010738 2013-11-08 2014-11-10 Procédé de fourniture continue de service d'appel d'urgence dans un réseau à commutation par paquets Ceased WO2015069076A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES14859481T ES2851388T3 (es) 2013-11-08 2014-11-10 Procedimiento para proporcionar continuamente servicio de llamadas de emergencia a través de red de paquetes
EP14859481.5A EP3068151B1 (fr) 2013-11-08 2014-11-10 Procédé de fourniture continue de service d'appel d'urgence dans un réseau à commutation par paquets
US15/033,712 US9872317B2 (en) 2013-11-08 2014-11-10 Method for continuously providing emergency call service through packet network
CN201480061384.6A CN105706471A (zh) 2013-11-08 2014-11-10 通过分组网络连续提供紧急呼叫服务的方法
US15/869,377 US10448450B2 (en) 2013-11-08 2018-01-12 Method for continuously providing emergency call service through packet network
US16/598,377 US10701758B2 (en) 2013-11-08 2019-10-10 Method for continuously providing emergency call service through packet network

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2013-0135862 2013-11-08
KR20130135862 2013-11-08
KR10-2014-0021560 2014-02-24
KR1020140021560A KR102179048B1 (ko) 2013-11-08 2014-02-24 패킷망을 통한 응급 콜 서비스를 지속적으로 제공하기 위한 방법

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US15/033,712 A-371-Of-International US9872317B2 (en) 2013-11-08 2014-11-10 Method for continuously providing emergency call service through packet network
US15/869,377 Continuation US10448450B2 (en) 2013-11-08 2018-01-12 Method for continuously providing emergency call service through packet network

Publications (1)

Publication Number Publication Date
WO2015069076A1 true WO2015069076A1 (fr) 2015-05-14

Family

ID=53041767

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2014/010738 Ceased WO2015069076A1 (fr) 2013-11-08 2014-11-10 Procédé de fourniture continue de service d'appel d'urgence dans un réseau à commutation par paquets

Country Status (1)

Country Link
WO (1) WO2015069076A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018527844A (ja) * 2015-09-15 2018-09-20 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． サービス処理方法、サービス処理装置、および通信システム
CN110392393A (zh) * 2019-06-19 2019-10-29 中国移动通信集团湖北有限公司 针对VoLTE语音业务和数据业务的业务分层处理方法及装置
CN110557830A (zh) * 2018-05-30 2019-12-10 展讯通信（上海）有限公司 多注册下ims网络的寻呼方法、装置及网络侧设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090047922A1 (en) * 2007-08-13 2009-02-19 Research In Motion Limited Apparatus, and associated method, for facilitating an emergency call session using a packet-switched-capable wireless device
US20100255808A1 (en) * 2007-12-18 2010-10-07 Wei Guo Method and apparatus for implementing emergency calls
US20120188941A1 (en) * 2011-01-24 2012-07-26 Verizon Patent And Licensing Inc. Emergency support for voice over internet protocol (voip) over mixed macro and femto networks
WO2012111473A1 (fr) * 2011-02-14 2012-08-23 株式会社エヌ・ティ・ティ・ドコモ Procédé de communication mobile et nœud de commande de session d'appel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090047922A1 (en) * 2007-08-13 2009-02-19 Research In Motion Limited Apparatus, and associated method, for facilitating an emergency call session using a packet-switched-capable wireless device
US20100255808A1 (en) * 2007-12-18 2010-10-07 Wei Guo Method and apparatus for implementing emergency calls
US20120188941A1 (en) * 2011-01-24 2012-07-26 Verizon Patent And Licensing Inc. Emergency support for voice over internet protocol (voip) over mixed macro and femto networks
WO2012111473A1 (fr) * 2011-02-14 2012-08-23 株式会社エヌ・ティ・ティ・ドコモ Procédé de communication mobile et nœud de commande de session d'appel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BLACKBERRY UK LTD. ET AL.: "Correcting handling of CS SERVICE NOTIFICATION message while the UE has an emergency bearer context", , 3GPP TSG-CT WG1 #85,CL-134780, 4 November 2013 (2013-11-04), SAN FRANCISCO, USA, XP050730606 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018527844A (ja) * 2015-09-15 2018-09-20 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． サービス処理方法、サービス処理装置、および通信システム
US10694571B2 (en) 2015-09-15 2020-06-23 Huawei Technologies Co., Ltd. Service processing method and service processing apparatus
US11497076B2 (en) 2015-09-15 2022-11-08 Huawei Technologies Co., Ltd. Service processing method and service processing apparatus
CN110557830A (zh) * 2018-05-30 2019-12-10 展讯通信（上海）有限公司 多注册下ims网络的寻呼方法、装置及网络侧设备
CN110557830B (zh) * 2018-05-30 2022-03-01 展讯通信（上海）有限公司 多注册下ims网络的寻呼方法、装置及网络侧设备
CN110392393A (zh) * 2019-06-19 2019-10-29 中国移动通信集团湖北有限公司 针对VoLTE语音业务和数据业务的业务分层处理方法及装置

Similar Documents

Publication Publication Date Title
US10701758B2 (en) Method for continuously providing emergency call service through packet network
CN110572414B (zh) 在移动通信系统中提高呼叫质量的方法和装置
CN104066200B (zh) 一种ue间端到端通信的实现方法及用户设备
EP3897032A1 (fr) Procédé de commande de services dans un système de communication sans fil
WO2009139575A2 (fr) Procédé et appareil pour assurer un appel téléphonique dans un système de communication mobile et système correspondant
WO2014112844A1 (fr) Procédé et appareil de commande de trafic dans un système de communication sans fil
WO2013025008A1 (fr) Procédé permettant de traiter des données associées à une réduction de la signalisation dans un système de communication sans fil
WO2011136529A2 (fr) Appareil et procédé de prise en charge de resélection de nœud de passerelle dans un système de communication
WO2015016610A1 (fr) Procédé et appareil d'amélioration du rendement de service dans un système de communications sans fil
WO2010128786A2 (fr) Procédé de fourniture d'informations de type de connexion et procédé de commande de ressource radio de nœud b évolué domestique
WO2013048100A1 (fr) Procédé de traitement de données associées à une mise à jour de zone de localisation dans un système de communication sans fil
WO2013085310A1 (fr) Appareil et procédé de distribution efficace de service de message court dans système de communication sans fil
WO2013022167A1 (fr) Procédé de fourniture d'un service de repli cs pour distribution de charge, et dispositif de station de base et terminal mobile pour le procédé
EP2371152A1 (fr) Prise en charge d'appels d'urgence pendant l'itinérance
WO2013141552A1 (fr) Procédé et dispositif pour transférer et recevoir un message dans un système pour abonnés itinérants
WO2013172623A1 (fr) Procédé et dispositif de prévention de perte d'appel à destination d'un mobile
WO2017026772A1 (fr) Procédé servant à sélectionner une fonction de commande de session d'appel de mandataire (p-cscf) et à transmettre un message de protocole d'initiation de session (sip) dans un système de communication sans fil et dispositif associé
US10091761B2 (en) Apparatus and method for paging in wireless communication system
WO2018009025A1 (fr) Procédé permettant de transmettre et de recevoir des signaux se rapportant à une connexion au réseau de données par paquets (pdn) dans un système de communication sans fil et dispositif s'y rapportant
JP6506298B2 (ja) ビデオ通話サービス品質の増進方法及び装置
WO2010064859A2 (fr) Procédé permettant de changer le contrôleur de réseau d'accès générique (gan) avec lequel un terminal est enregistré sur la base de la localisation d'un terminal mobile
WO2015069076A1 (fr) Procédé de fourniture continue de service d'appel d'urgence dans un réseau à commutation par paquets
CN105323806B (zh) 承载的建立方法及装置
WO2017057954A1 (fr) Procédé d'émission/réception d'appel dans un système de communication sans fil et dispositif associé
WO2015084080A1 (fr) Procédé et dispositif d'amélioration de qualité de service d'appel dans un système de communication mobile

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14859481

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 15033712

Country of ref document: US

REEP Request for entry into the european phase

Ref document number: 2014859481

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2014859481

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE