WO2016183729A1 - 一种VoLTE业务实现方法、***及设备 - Google Patents

一种VoLTE业务实现方法、***及设备 Download PDF

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Publication number
WO2016183729A1
WO2016183729A1 PCT/CN2015/079068 CN2015079068W WO2016183729A1 WO 2016183729 A1 WO2016183729 A1 WO 2016183729A1 CN 2015079068 W CN2015079068 W CN 2015079068W WO 2016183729 A1 WO2016183729 A1 WO 2016183729A1
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WIPO (PCT)
Prior art keywords
message
core network
network element
proxy device
request
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PCT/CN2015/079068
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English (en)
French (fr)
Inventor
严凯
李明
胡钰舒
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华为技术有限公司
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Priority to PCT/CN2015/079068 priority Critical patent/WO2016183729A1/zh
Priority to CN201580072139.XA priority patent/CN107251609B/zh
Publication of WO2016183729A1 publication Critical patent/WO2016183729A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/142—Reselecting a network or an air interface over the same radio air interface technology

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, system, and device for implementing a VoLTE service.
  • the base station In the second generation (2 nd generation, 2G) mobile communication network and the third generation (3 rd generation, 3G) mobile communication network, the base station simultaneously accesses the core network circuit domain and the packet domain, as shown in FIG. 1 .
  • the voice service accesses the core network circuit domain through the base station, and the called network number is analyzed by the core network circuit domain, and the voice service is connected to the called number.
  • IP Internet Protocol
  • an IP data service channel is established by the core network packet domain, and the IP data service is connected to a corresponding IP data service network, such as the Internet or a private network.
  • the short message service and the voice intelligent network service are all responsible for dredging by the core network circuit domain.
  • the fourth generation (4 th Generation, 4G) mobile communication network an evolved base station (evolved NodeB, eNB) only access an evolved packet core network (Evolved Packet Core, EPC), shown in Figure 2, the EPC service gateway comprising (Serving Gateway, SGW) and Packet Date Network Gateway (PGW), which may also include a Mobility Management Entity (MME).
  • EPC evolved Packet Core
  • SGW Serving Gateway
  • PGW Packet Date Network Gateway
  • MME Mobility Management Entity
  • the 4G network has only a Packet Switch Domain (PS Domain) and no Circuit Switched Domain (CS Domain).
  • PS Domain Packet Switch Domain
  • CS Domain Circuit Switched Domain
  • VoLTE Voice over LTE
  • LTE Long Term Evolution
  • IMS Multimedia Subsystem
  • the voice service accesses the IMS through the IP data channel in the EPC, and the IMS analyzes the called number, connects the call to the called user, and the IMS is responsible for voice service control.
  • IMS-based VoLTE requires the deployment of an IMS system.
  • the deployment of the IMS system involves multiple network elements and interfaces, which makes the deployment of the IMS system affect the deployment progress of the VoLTE.
  • the embodiments of the present invention provide a method, a system, and a device for implementing a VoLTE service, which are used to overcome the problem that the deployment of the IMS system affects the deployment progress of the VoLTE in the existing implementation of the VoLTE service.
  • the first aspect provides a proxy device, where the proxy device is respectively connected to a circuit switched domain CS core network element, a base station eNB, and a mobility management entity MME, where the proxy device includes a communication module and a processing module;
  • the communication module is configured to acquire, according to the Long Term Evolution (LTE)-based voice VoLTE bearer related signaling of the eNB or the MME;
  • LTE Long Term Evolution
  • the processing module is configured to convert the VoLTE bearer related signaling obtained by the communications module into CS voice bearer related signaling that can be processed by the CS core network NE;
  • the communication module is configured to send the CS voice bearer related signaling that is converted by the processing module to the CS core network element;
  • the communication module is configured to acquire CS voice bearer related signaling of the CS core network element
  • the processing module is configured to convert the CS voice bearer related signaling acquired by the communications module into a voice VoLTE bearer related signaling based on Long Term Evolution (LTE);
  • LTE Long Term Evolution
  • the communication module is configured to send the VoLTE bearer related signaling that is converted by the processing module to the eNB or the MME.
  • the communications module is further configured to:
  • the processing module is further configured to:
  • the communication module is further configured to:
  • the communication module is further configured to:
  • the processing module is further configured to:
  • the communication module is further configured to:
  • the communications module is further configured to:
  • the processing module is further configured to:
  • the communication module is further configured to:
  • the processing module is further configured to:
  • the communication module is further configured to:
  • the communication module is specifically configured to:
  • the processing module is specifically configured to:
  • the communication module is specifically configured to:
  • connection management request related signaling Transmitting, by the processing module, the connection management request related signaling to the CS core network element, and receiving the radio access bearer returned by the CS core network element according to the connection management request related signaling RAB allocation request message;
  • the processing module is specifically configured to:
  • the communication module is specifically configured to:
  • the processing module is specifically configured to:
  • the communication module is specifically configured to:
  • the processing module is specifically configured to:
  • the communication module is specifically configured to:
  • the processing module is specifically configured to:
  • the communication module is specifically configured to:
  • the communication module is further configured to:
  • the ringing message sent by the CS core network element is received;
  • the processing module is further configured to:
  • the communication module is further configured to:
  • the SIP signaling that is obtained by converting the processing module to the called party to play back ringing tone is sent to the UE by the eNB.
  • the communication module is further configured to:
  • connection management request related signaling After the connection management request related signaling is sent to the CS core network element, receiving a message that the current call returned by the CS core network element is being processed;
  • the processing module is further configured to:
  • the communication module is further configured to:
  • the communication module is specifically configured to:
  • the processing module is specifically configured to:
  • the communication module is specifically configured to:
  • the processing module is specifically configured to:
  • the communication module is specifically configured to:
  • the processing module is specifically configured to:
  • the communication module is specifically configured to:
  • the processing module is specifically configured to:
  • the communication module is specifically configured to:
  • the processing module is specifically configured to:
  • the communication module is specifically configured to:
  • the processing module is specifically configured to:
  • the communication module is specifically configured to:
  • the processing module is specifically configured to:
  • connection confirmation message received by the communication module into a connection message that can be processed by the CS core network element
  • the communication module is specifically configured to:
  • the processing module is specifically configured to:
  • the communication module is specifically configured to:
  • the communications module is further configured to:
  • the processing module is further configured to:
  • the communication module is further configured to:
  • the proxy device is integrated in a radio network controller RNC or a serving gateway SGW.
  • a mobility management entity MME including:
  • a receiving module configured to receive a long-term evolution LTE-based voice VoLTE bearer-related signaling sent by the proxy device, where the VoLTE bearer related signaling is a CS voice bearer related signaling of the proxy device to the circuit switched domain CS core network network element Conversion obtained;
  • a sending module configured to send, to the proxy device, VoLTE bearer related signaling of the user equipment UE.
  • the processing module is further included;
  • the receiving module is specifically configured to:
  • the processing module is specifically configured to:
  • the sending module is specifically configured to:
  • the receiving module is specifically configured to:
  • the processing module is specifically configured to:
  • the sending module is specifically configured to:
  • a bearer setup response is returned to the proxy device.
  • the receiving module is specifically configured to: receive a session parameter sent by the proxy device, where the session parameter is the proxy device The received paging message sent by the CS core network element is carried;
  • the processing module is specifically configured to: page to the UE according to the session parameter;
  • the sending module is specifically configured to: return a paging response to the proxy device;
  • the receiving module is specifically configured to: receive a bearer setup request sent by the proxy device;
  • the processing module is specifically configured to: establish a VoLTE bearer between the UE and the proxy device according to the bearer setup request;
  • the sending module is specifically configured to: return a bearer setup response to the proxy device.
  • a base station eNB including:
  • a receiving module configured to receive a long-term evolution LTE-based voice VoLTE bearer-related signaling sent by the proxy device, where the VoLTE bearer related signaling is a CS voice bearer related signaling of the proxy device to the circuit switched domain CS core network network element Conversion obtained;
  • a sending module configured to send, to the proxy device, the VoLTE bearer related signaling of the user equipment UE.
  • the fourth aspect provides a VoLTE service implementation system, including the base station eNB according to the third aspect, the mobility management entity MME according to any one of the foregoing aspects, and the proxy device according to any one of the foregoing aspects. And a circuit switched domain CS core network element;
  • the proxy device is respectively connected to the eNB, the MME, and the CS core network element;
  • the proxy device is configured to convert the LTE-based voice VoLTE bearer related signaling of the eNB or the MME into CS voice bearer related signaling that can be processed by the CS core network NE, and Transmitting the CS voice bearer related signaling to the CS core network element; and converting the CS voice bearer related signaling of the CS core network element into VoLTE bearer related signaling, and sending the eNB or the MME.
  • a fifth aspect provides a method for implementing a VoLTE service, including:
  • the proxy device obtains the long-term evolution LTE-based voice VoLTE bearer-related signaling of the base station eNB or the mobility management entity MME, and converts the obtained VoLTE bearer-related signaling into a CS voice bearer related information that can be processed by the CS core network element of the circuit-switched domain. And transmitting, to the CS core network element, the converted CS voice bearer related signaling;
  • the proxy device acquires the CS voice bearer related signaling of the CS core network element, and converts the obtained CS voice bearer related signaling into a VoLTE bearer related signaling, and sends the converted VoLTE bearer related signaling.
  • the proxy device acquires the CS voice bearer related signaling of the CS core network element, and converts the obtained CS voice bearer related signaling into a VoLTE bearer related signaling, and sends the converted VoLTE bearer related signaling.
  • the eNB or the MME To the eNB or the MME.
  • the method further includes:
  • the proxy device receives an authentication request of the CS core network element, and the authentication request carries at least an authentication parameter, and sends an authentication parameter in the authentication request to the MME;
  • the proxy device receives an authentication response sent by the user equipment UE according to the authentication parameter, and converts the authentication response into an authentication response that can be processed by the CS core network element.
  • the CS core network element sends an authentication response that can be processed by the CS core network element.
  • the method further includes:
  • the proxy device receives the session initiation protocol SIP registration request signaling of the user equipment UE that is forwarded by the eNB, where the SIP registration request signaling carries the identifier information of the UE, and is carried according to the SIP registration request signaling.
  • the identifier information of the UE generates a location update request, and sends the location update request to the CS core network element;
  • the proxy device receives a location update accept message returned by the CS core network element according to the location update request, where the location update accept message is used to indicate that the SIP registration request of the UE is accepted, and is accepted according to the location update.
  • the message obtains SIP registration completion signaling, and sends the SIP registration completion signaling to the eNB.
  • the method specifically includes:
  • the proxy device receives a SIP request message for creating a session of the user equipment UE, and the SIP request message of the creation session carries a session parameter, and converts the SIP request message of the creation session into a CS core network element capable of processing
  • the connection management request related signaling is sent to the CS core network element by the connection management request related signaling;
  • the proxy device receives a radio access bearer RAB allocation request message returned by the CS core network element according to the connection management request related signaling, establishes a voice bearer according to the RAB allocation request message, and allocates a request according to the RAB. Generating a bearer setup request, and sending the bearer setup request to the MME;
  • the proxy device receives a bearer setup response returned by the MME after establishing a VoLTE bearer with the UE according to the bearer setup request, and obtains the CS core network according to the bearer setup response.
  • the RAB allocation response message corresponding to the RAB allocation request message that can be processed by the network element, and the RAB allocation response message corresponding to the RAB allocation request message is sent to the CS core network network element;
  • the proxy device receives the connection message returned by the CS core network element, and obtains SIP signaling indicating that the session connection is established according to the connection message, and sends the indication that the session connection is established to the UE by the eNB.
  • a response message of the connection message that can be processed by the CS core network element, and a response message of the connection message is returned to the CS core network element.
  • the proxy device After the proxy device sends the RAB allocation response message corresponding to the RAB allocation request message to the CS core network element, receiving a ringing message sent by the CS core network element, and converting the ringing message into an indication
  • the called SIP message that plays the ringback tone to the calling party, and sends the SIP signaling indicating that the called party plays the ring back tone to the calling party, and sends the SIP signaling to the UE through the eNB.
  • the proxy device Transmitting, by the proxy device, the connection management request related signaling to the CS core network element
  • the message that the current call is being processed is converted into a SIP message indicating the progress of the session, and the SIP message indicating the progress of the session is passed through the eNB. Sent to the UE.
  • the method specifically includes:
  • the proxy device receives a paging message sent by the network element of the CS core network, where the paging message carries a session parameter, acquires the session parameter carried in the paging message, and sends the session parameter to the
  • the MME receives the paging response returned by the MME after paging to the UE according to the session parameter, and converts the paging response returned by the MME into a paging response that can be processed by the CS core network element.
  • the voice call confirmation message that can be processed by the element, and the voice call confirmation message is sent to the CS core network element;
  • a radio access bearer RAB allocation request sent by the CS core network element establishing a voice bearer according to the RAB allocation request, obtaining a bearer setup request, and sending the bearer setup request to the MME
  • the RAB allocates the requested RAB allocation response, and sends an RAB allocation response corresponding to the RAB allocation request to the CS core network element;
  • the proxy device After receiving the connection confirmation message of the UE forwarded by the eNB, the proxy device converts the connection confirmation message into a connection message that can be processed by the CS core network element, and sends the connection message to the CS core network element.
  • the connection message is received, and the corresponding connection sent by the network element of the CS core network is received.
  • the response message of the message After the response message of the message, the response message of the connection message is converted into SIP signaling indicating the connection confirmation, and the SIP signaling indicating the connection confirmation is sent to the UE by using the eNB.
  • the proxy device After the proxy device sends the RAB allocation response corresponding to the RAB allocation request to the CS core network element, receiving the SIP signaling that the UE forwards by the eNB to indicate that the called party plays the ringback tone to the calling party, The SIP signaling indicating that the called party plays the ringback tone is converted into a ringing message that can be processed by the CS core network element, and the ringing message is sent to the CS core network element.
  • a method for implementing a VoLTE service including:
  • the mobility management entity MME receives the Long Term Evolution (LTE)-based voice VoLTE bearer related signaling sent by the proxy device, where the VoLTE bearer related signaling is the CS voice bearer related signaling of the proxy device to the circuit switched domain CS core network network element. Conversion obtained;
  • LTE Long Term Evolution
  • the MME sends the VoLTE bearer related signaling of the user equipment UE to the proxy device.
  • the method further includes:
  • the MME generates a non-access stratum NAS message carrying the authentication parameter
  • the MME sends a NAS message carrying the authentication parameter to the UE.
  • the method further includes:
  • the MME returns a bearer setup response to the proxy device.
  • the method in the called process specifically includes:
  • the MME After paging, the MME, after paging to the UE according to the session parameter, returns a search to the proxy device. Responding to receive a bearer setup request sent by the proxy device;
  • the MME establishes a VoLTE bearer between the UE and the proxy device according to the bearer setup request, and returns a bearer setup response to the proxy device.
  • the seventh aspect provides a method for implementing a VoLTE service, including:
  • the base station eNB receives the long-term evolution LTE-based voice VoLTE bearer-related signaling sent by the proxy device, where the VoLTE bearer-related signaling is obtained by the proxy device to convert the CS voice bearer related signaling of the circuit switched domain CS core network network element;
  • the eNB sends the VoLTE bearer related signaling of the user equipment UE to the proxy device.
  • the proxy device can implement the conversion between the VoLTE bearer related signaling and the CS voice bearer related signaling that can be processed by the CS core network NE.
  • the VoLTE call accesses the CS domain of the traditional core network (2G or 3G), and completes the voice call through the CS domain of the traditional core network.
  • the VoLTE service is completed by using the traditional core network.
  • Figure 1 is a schematic diagram of a 2G/3G network structure
  • FIG. 2 is a schematic diagram of a 4G network structure
  • FIG. 3 is a schematic structural diagram of an LTE system according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of another LTE system according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an authentication and encryption process according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a process of attaching a UE to an LTE network according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a SIP registration process performed by a UE according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a calling process according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart of a called party according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a proxy device according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of another proxy device according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of an MME according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of another MME according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of an eNB according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of another eNB according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic flowchart of a method for implementing a VoLTE service by using a proxy device according to an embodiment of the present invention
  • FIG. 17 is a schematic flowchart of a method for an MME to implement a VoLTE service according to an embodiment of the present disclosure
  • FIG. 18 is a schematic flowchart of a method for an eNB to implement a VoLTE service according to an embodiment of the present invention.
  • a proxy device is set on the network side of the LTE network, and the transition between the Session Initiation Protocol (SIP) signaling of the VoLTE and the CS signaling that can be processed by the network element of the CS core network is implemented by the proxy device.
  • the CS signaling refers to the voice signaling in the traditional CS domain.
  • the VoLTE call is connected to the CS domain of the traditional core network (2G or 3G), and the voice call is completed through the CS domain of the traditional core network, and the voice call is implemented.
  • the VoLTE service is completed using the traditional core network.
  • the voice signaling in the CS domain is voice signaling based on the IuCS interface
  • the voice signaling in the CS domain in the 2G network is voice signaling based on the A interface.
  • the LTE system architecture provided by the present invention includes at least an eNB, an MME, a proxy device, and a CS core network element; the proxy device is respectively connected to the MME, the eNB, and the CS core network element.
  • the CS core network element includes a Mobile Switching Center (MSC) and a Media Gateway (MGW), wherein the MSC is used to control the CS service. Face processing, MGW is used for user plane processing of CS services.
  • MSC Mobile Switching Center
  • MGW Media Gateway
  • the MME and the proxy device are connected through a private interface.
  • the system architecture further includes an SGW and a PGW, and the eNB, the MME, the SGW, and the PGW are connected according to a connection relationship defined by the LTE protocol.
  • the eNB is connected to the MME and the SGW
  • the SGW is connected to the PGW
  • the PGW is connected to the core network
  • the MME is connected to the SGW.
  • the eNB is connected to the MME through an S1-MME interface
  • the eNB is connected to the SGW through an S1-U interface.
  • the eNB, the SGW, the PGW, and the Internet constitute a transmission path of the PS domain user plane data stream.
  • the MME, eNB, SGW, and proxy device form a transmission path for the control plane data stream.
  • the MME, the eNB, the proxy device, and the CS core network element form a transmission path for the voice data stream.
  • the MME is responsible for allocating the PS domain service to the SGW and the VoLTE service to the proxy device.
  • the MME establishes a VoLTE bearer between the eNB and the proxy device, and the VoLTE bearer includes at least one of the following: a VoLTE signaling bearer and a VoLTE voice bearer.
  • the MME is also used to complete the authentication process for the MSC and complete the paging process for the MSC.
  • the proxy device converts the VoLTE bearer into a voice bearer of the CS domain that can be processed by the CS core network element.
  • the voice bearer of the CS domain includes a control plane bearer and a user plane bearer, and the proxy device sends the data related to the user plane bearer to the MGW.
  • the control plane bearer related signaling is sent to the MSC.
  • the proxy device may be a Radio Network Controller (RNC) or a Base Station Controller (BSC).
  • RNC Radio Network Controller
  • BSC Base Station Controller
  • the proxy device is responsible for completing the conversion between SIP signaling and CS signaling.
  • the UE attaches and initiates the PS service in the EPC according to the procedures specified in the existing protocol.
  • the SGW and the PGW do not need to establish a VoLTE bearer.
  • the proxy device may be implemented on an entity that integrates SGW functions, and is responsible for conversion between SIP signaling and CS signaling.
  • the proxy device is also responsible for VoLTE bearer processing and mobility processing, and is responsible for processing data transmitted by the IuCS interface or the A interface, and an IuR interface between the proxy device and a network entity integrating the functions of the proxy device.
  • the transmitted data is processed, the IuR interface
  • the proxy device is mainly used to convert the LTE-based voice VoLTE bearer related signaling of the eNB or the MME into the CS voice bearer related signaling that can be processed by the CS core network NE, and send the signaling to the CS voice bearer related signaling.
  • the CS core network element is configured to convert the CS voice bearer related signaling of the CS core network element into VoLTE bearer related signaling, and send the signal to the eNB or the MME.
  • the CS voice bearer related signaling refers to voice signaling that can be processed by the CS core network element.
  • VoLTE based on the above system architecture is described below through a plurality of different processing procedures.
  • the proxy device receives an authentication request (authentication request) of the CS core network element, and the authentication request carries at least an authentication parameter, and the authentication request is used in the authentication request.
  • the MME receives the authentication parameter sent by the proxy device, generates a non-access stratum NAS message carrying the authentication parameter, and sends a NAS message carrying the authentication parameter to the UE.
  • the UE corresponding to the authentication request can be determined by using the underlying signaling link number. This is not the content of the present invention. For details, refer to the provisions in the existing protocol, and the description is not described in detail herein.
  • the authentication parameters include but are not limited to RAND and AUTN.
  • the RES is included in the authentication response.
  • Step 501 Receive an authentication request sent by the MME when the UE initially attaches to the MME.
  • Step 502 The UE returns an authentication response to the MME.
  • Step 501 to step 502 are the first authentication of the UE under LTE, and the proxy device does not participate in the authentication process.
  • Step 503 The MSC in the CS core network element sends an authentication request of the UE to the proxy device.
  • Step 504 The MME sends an authentication request of the UE to the UE.
  • Step 506 The UE returns an authentication response to the authentication request to the MME.
  • Step 507 The MME returns an authentication response of the UE to the proxy device.
  • Step 508 The proxy device converts the authentication response of the UE into an authentication response that can be processed by the network element of the CS core network, and returns an authentication response that can be processed by the network element of the CS core network to the MSC.
  • Step 509 The MSC sends a security mode command (Security Mode Commands) to the proxy device.
  • a security mode command Security Mode Commands
  • Step 510 The RNC parses the password pair (CK, IK) carried in the security mode command, and sends the password pair to the MME.
  • the MME calculates the root key (Kasme) according to the password pair, and obtains the key.
  • the UE is attached to the LTE network.
  • the MME receives the attach request of the user equipment UE sent by the eNB, and returns a request for activating the VoLTE bearer to the eNB after accepting the attach request of the UE.
  • the request for activating the VoLTE bearer carries the VoLTE bearer parameter;
  • the eNB notifies the UE of the VoLTE bearer parameter carried in the request for activating the VoLTE bearer.
  • the VoLTE bearer parameter includes, but is not limited to, a service level parameter (QCI), an access point name (APN), and a destination address of the VoLTE bearer, where the destination address of the VoLTE bearer is an address of the proxy device. .
  • QCI service level parameter
  • API access point name
  • destination address of the VoLTE bearer is an address of the proxy device.
  • the specific process of the UE attaching to the LTE network is as follows:
  • Step 601 The UE sends an attach request (Attach Request) to the eNB;
  • Step 602 The eNB sends an attach request of the UE to the MME.
  • Step 603 After receiving the attach request of the UE, the MME returns a request for activating the VoLTE bearer to the eNB, where the request for the activated VoLTE bearer carries the VoLTE bearer parameter.
  • Step 604 The eNB sends a UE Capability Enquiry message to the UE, where the UE capability query message carries a VoLTE bearer parameter.
  • Step 605 The UE returns UE Capability Information to the eNB.
  • Step 606 The eNB performs RRC connection reconfiguration (RRC Connection Reconfiguration (RRC), radio resource control): after accepting the attach request of the UE, sending an Attach Accept message to the UE, and initiating activation of the default to the UE. a request carried by the EPS, and sending a context request to the UE to notify the UE of the information carried by the VoLTE;
  • RRC Radio Resource Control
  • Step 607 The UE sends an RRC Connection Reconfiguration Complete message to the eNB.
  • Step 608 The eNB sends an Initial Context Setup Response to the MME.
  • Step 609 The UE sends an Attach Complete message to the eNB.
  • Step 610 The eNB sends an attach complete message to the MME.
  • the proxy device receives the session initiation protocol SIP registration request signaling of the user equipment UE forwarded by the eNB, and the SIP registration request signaling carries the identifier information of the UE. And generating a location update request that can be processed by the CS core network element according to the identifier information of the UE that is carried in the SIP registration request signaling, and sending the location update request to the CS core network element; and receiving the location Determining, by the CS core network element, a location update accept message returned according to the location update request, the location update accept message is used to indicate that the SIP registration request of the UE is accepted, and sending the message to the eNB according to the location update accept message.
  • SIP registration completion signaling ;
  • the eNB forwards the SIP registration completion signaling to the UE.
  • Step 701 The eNB sends a SIP registration request of the UE to the proxy device.
  • Step 702 The proxy device converts the SIP registration request into a location update request that can be processed by the CS core network element, and sends the location update request to the CS core network element MSC.
  • Step 703 The MSC sends a location update accept message to the proxy device.
  • Step 704 The proxy device sends a 200 ok SIP message to the UE through the eNB.
  • the proxy device receives a SIP request message for creating a session of the user equipment UE, and the SIP request message of the created session carries a session parameter, and converts the SIP request message of the created session into a CS.
  • a connection management request related signaling that can be processed by the core network element, and sending the connection management request related signaling to the CS core network element;
  • connection message returned by the CS core network element obtaining, according to the connection message, SIP signaling indicating that the session connection is established, and sending, by the eNB, the SIP signaling indicating that the session connection is established, and Receiving the response signaling returned by the UE that is forwarded by the eNB to the SIP signaling indicating that the session connection is established, and obtaining the CS core network according to the received response signaling corresponding to the SIP signaling indicating that the session connection is established.
  • the response message of the connection message that can be processed by the network element returns a response message of the connection message to the CS core network element.
  • the proxy device further sends a ringing message sent by the network element of the CS core network after the RAB allocation response message corresponding to the RAB allocation request message is sent to the CS core network element according to the bearer setup response. Transmitting the ringing message into SIP signaling indicating that the called party plays the ring back tone to the calling party, and sending the SIP signaling indicating that the called party plays the ring back tone to the calling party, and sending the SIP signaling to the UE through the eNB .
  • the proxy device sends the connection management request related signaling to the CS core network element, receiving a message that the CS core network element returns the current call being processed, and the current call is being processed.
  • the processed message is converted into a SIP message indicating the progress of the session, the indication session is The progressed SIP message is sent to the UE through the eNB.
  • the session parameter includes at least a calling identifier and a called identifier.
  • Step 801 The eNB sends an SIP request message for creating a session of the UE to the proxy device, that is, an Invite message, where the Invite message carries the session parameter.
  • Step 802 The proxy device converts the Invite message into a connection management request related signaling that can be processed by the CS core network element, where the connection management request related signaling includes a connection management service request (CM Service Request) and a setup request (Setup).
  • CM Service Request connection management service request
  • Setup setup request
  • Step 803 The MSC sends a message to the proxy device that the current call is being processed (Call Proceeding);
  • Step 804 The proxy device converts the message that the current call is being processed into a SIP message indicating the progress of the session, that is, SIP signaling: 183Session Progress, and sends 183Session Progress to the UE through the eNB to notify the UE that the current call is being processed;
  • Step 805 The eNB sends the Prack signaling of the UE to the proxy device.
  • Step 806 The proxy device sends an acknowledgment signaling to the UE through the eNB, that is, SIP signaling: 200 OK;
  • Step 807 The MSC sends an RAB Assignment Request message (RAB Assignment Request) to the proxy device.
  • RAB Assignment Request RAB Assignment Request
  • Step 808 The proxy device establishes a voice bearer according to the RAB allocation request message, and generates a bearer setup request according to the RAB allocation request message, and sends the bearer to the MME.
  • Step 809 The MME initiates a process of establishing a VoLTE bearer to the UE, that is, activating a destination EPS bearer according to the bearer setup request, and sending a context request to the UE.
  • Step 810 The UE returns a context accept message (Context Accept) to the MME.
  • Step 811 The MME sends a bearer setup response to the proxy device.
  • Step 812 The proxy device obtains a RAB Assignment Response (RAB Assignment Response) of the RAB allocation request message that can be processed by the CS core network element according to the bearer setup response, to the MSC. Return the RAB allocation response;
  • RAB Assignment Response RAB Assignment Response
  • Step 813 The MSC sends a ringing message (Alerting) to the proxy device.
  • Step 814 The proxy device converts the ringing message into SIP signaling indicating that the called party plays a ringback tone to the calling party, that is, SIP signaling: 180Ring, and sends 180Ring to the UE through the eNB;
  • Step 815 The proxy device receives a connection message (Connect) sent by the MSC.
  • Step 816 The proxy device converts the connection message into acknowledgment signaling, that is, SIP signaling: 200 OK, and sends the 200 OK to the UE through the eNB;
  • Step 817 The proxy device receives the SIP response signaling (ACK) sent by the UE.
  • ACK SIP response signaling
  • Step 818 The proxy device converts the SIP response signaling into a connection response message (Connect ACK) that can be processed by the CS core network element, and sends a connection response message to the MSC, and the voice connection is successfully established.
  • Connect ACK connection response message
  • the proxy device receives a paging message sent by the network element of the CS core network, where the paging message carries a session parameter, and the method is carried in the paging message.
  • a session parameter the session parameter is sent to the MME, and the paging response returned by the MME after paging to the UE according to the session parameter is received, and the paging response returned by the UE is converted into a CS core network element.
  • a paging response that can be processed, and sending a paging response that the CS core network element can process to the CS core network element;
  • the voice call confirmation message that can be processed by the CS core network element is obtained according to the acknowledgment message of the SIP request message for the created session, to the CS core network.
  • the network element sends the voice call confirmation message;
  • connection confirmation message of the UE sent by the eNB After receiving the connection confirmation message of the UE sent by the eNB, converting the connection confirmation message into a connection message that can be processed by the CS core network element, sending the connection message to the CS core network element, and receiving After the response message of the connection message is sent by the CS core network element, the response message of the connection message is converted into the SIP signaling indicating the connection confirmation, and the SIP signaling indicating the connection confirmation is passed.
  • the eNB sends to the UE.
  • the eNB receives an indication from the eNB that the called party plays a ringback tone to the calling party.
  • SIP signaling converting the SIP signaling indicating that the called party plays the ringback tone to the ringing message that the CS core network element can process, and sending the ringing message to the CS core network Network element.
  • the session parameter includes at least a calling identifier and a called identifier.
  • Step 901 The CS core network element MSC sends a paging message (Paging) to the proxy device, where the paging message carries the session parameter.
  • Paging paging message
  • Step 902 The proxy device sends the session parameter carried in the paging message to the MME, and the MME sends the paging. Specifically, the proxy device carries the session parameter by using a message agreed with the MME.
  • Step 903 The MME pages the called UE according to the session parameter.
  • Step 904 The UE initiates a process of establishing a VoLTE bearer in response to the paging of the MME, and sends a PDN Connectivity Request (PDN, Packet Data Network, Packet Data Network) to the MME.
  • PDN Connectivity Request Packet Data Network, Packet Data Network
  • Step 905 The MME activates a default EPS bearer of the UE, and sends a context request (Context Request) to the UE.
  • Context Request a context request
  • Step 906 The UE returns a Context Accept message to the MME.
  • Step 907 The MME returns a paging response to the proxy device, where the paging response is carried by the message agreed between the MME and the proxy device.
  • Step 908 The proxy device converts the paging response of the MME into a paging response (Paging Response) that can be processed by the CS core network element, and returns a paging response that can be processed by the CS core network element to the MSC.
  • Paging Response a paging response
  • Step 909 The MSC sends a voice call setup request (Setup) to the proxy device.
  • Step 910 The proxy device converts the Setup into a SIP request message for creating a session, that is, an Invite message, and sends the Invite message to the UE through the eNB.
  • Step 911 The eNB sends a SIP message indicating the progress of the session of the UE to the proxy device, that is, SIP signaling: 183 Session Progress;
  • Step 912 The proxy device returns Prack signaling to the UE by using the eNB.
  • Step 913 The eNB returns the acknowledgment signaling of the UE to the proxy device, that is, SIP signaling: 200 OK;
  • Step 914 The proxy device converts the 200 OK into a call confirmation message (Call Confirmed) that can be processed by the CS core network element, and sends a Call Confirmed to the MSC.
  • Call Confirmed a call confirmation message
  • Step 915 The MSC sends an RAB Assignment Request (RAB Assignment Request) to the proxy device.
  • RAB Assignment Request RAB Assignment Request
  • Step 916 The proxy device sends a bearer setup request to the MME.
  • the bearer setup request is a message agreed between the proxy device and the MME.
  • Step 917 The MME activates a Dedicated EPS Brearer of the UE, and sends a context request (Context Request) to the UE.
  • Step 918 The UE sends a context accept message (Context Accept) to the MME.
  • Step 919 The MME returns a bearer setup response to the proxy device.
  • Step 920 The proxy device obtains a RAB Assignment Response that can be processed by the CS core network element according to the bearer setup response of the MME, and sends the RAB assignment response to the MSC.
  • Step 921 The eNB sends, to the proxy device, the SIP signaling indicating that the called party plays the ringback tone to the calling party, that is, SIP signaling: 180Ring;
  • Step 922 The proxy device converts the 180Ring into a ringing message (Alerting) that can be processed by the CS core network element, and sends the Alerting to the MSC.
  • Step 923 The eNB returns a connection confirmation message of the UE to the proxy device, that is, SIP signaling: 200 OK;
  • Step 924 The proxy device converts the 200 OK into a connection message (Connect) that the CS core network element can process, and sends the Connect to the MSC.
  • Step 925 The MSC sends a connection response message (Connect ACK) to the proxy device.
  • Step 926 The proxy device converts the Connect ACK into a SIP response (ACK) message, and sends a SIP response message to the UE, and the voice connection of the called UE is successfully established.
  • ACK SIP response
  • the structure of the proxy device provided in the embodiment of the present invention is as shown in FIG. 10, and mainly includes a communication module 1001 and a processing module 1002:
  • the communication module 1001 is configured to acquire, according to the Long Term Evolution (LTE)-based voice VoLTE bearer related signaling of the base station eNB or the mobility management entity MME;
  • LTE Long Term Evolution
  • the processing module 1002 is configured to convert the VoLTE bearer related signaling obtained by the communication module 1001 into CS voice bearer related signaling that can be processed by the CS core network element of the circuit switched domain;
  • the communication module 1001 is configured to send the CS voice bearer related signaling that is converted by the processing module 1002 to the CS core network element; or
  • the communication module 1001 is configured to acquire CS voice bearer related signaling of the CS core network element
  • the processing module 1002 is configured to convert the CS voice bearer related signaling acquired by the communications module 1001 into VoLTE bearer related signaling.
  • the communication module 1001 is configured to send the VoLTE bearer related signaling converted by the processing module 1002 to the eNB or the MME.
  • the communication module 1001 is further configured to: receive an authentication request of the CS core network element, where the authentication request carries at least an authentication parameter;
  • the processing module 1002 is further configured to: obtain an authentication parameter in the authentication request received by the communication module;
  • the communication module 1001 is further configured to send the authentication parameter acquired by the processing module to the Receiving, by the MME, an authentication response sent by the user equipment UE according to the authentication parameter;
  • the processing module 1002 is further configured to: convert the authentication response received by the communication module into an authentication response that can be processed by the CS core network element;
  • the communication module 1001 is further configured to: send an authentication response that can be processed by the CS core network element obtained by the processing module to the CS core network element.
  • the communication module 1001 is further configured to: receive a session initiation protocol SIP registration request signaling of the user equipment UE that is forwarded by the eNB, where the SIP registration request signaling carries the Identification information of the UE;
  • the processing module 1002 is further configured to: generate a location update request according to the identifier information of the UE that is carried in the SIP registration request signaling received by the communication module;
  • the communication module 1001 is further configured to: send the location update request generated by the processing module to the CS core network element, and receive a location update that is returned by the CS core network element according to the location update request. Accepting a message, the location update accept message is used to indicate accepting a SIP registration request of the UE;
  • the processing module 1002 is further configured to: obtain SIP registration completion signaling according to the location update accept message received by the communication module;
  • the communication module 1001 is further configured to: send, to the eNB, the SIP registration completion signaling obtained by the processing module.
  • the communication module 1001 is specifically configured to: receive a SIP request message for creating a session of the UE that is forwarded by the eNB, where the SIP request message of the created session carries a session parameter;
  • the processing module 1002 is specifically configured to: convert the SIP request message of the session created by the communication module into a connection management request related signaling that can be processed by the CS core network element;
  • the communication module 1001 is specifically configured to: send the connection management request related signaling that is converted by the processing module to the CS core network element, and receive the CS core network element according to the connection management request.
  • the processing module 1002 is specifically configured to: according to the RAB allocation request received by the communication module Generating a voice bearer, and generating a bearer setup request according to the RAB allocation request message;
  • the communication module 1001 is specifically configured to: send the bearer setup request generated by the processing module to the MME, and receive the MME to establish, with the UE, the proxy device according to the bearer setup request.
  • the processing module 1002 is specifically configured to: obtain, according to the bearer setup response, an RAB allocation response message that can be processed by the CS core network element corresponding to the RAB allocation request message;
  • the communication module 1001 is specifically configured to: send, to the CS core network element, an RAB allocation response message corresponding to the RAB allocation request message obtained by the processing module, and receive a connection message returned by the CS core network element ;
  • the processing module is specifically configured to: obtain SIP registration completion signaling according to the connection message received by the communication module 1001;
  • the communication module 1001 is specifically configured to: send, by using the eNB, the SIP signaling that is completed by the processing module to indicate that the session connection is established, and receive the indication that the UE that is forwarded by the eNB corresponds to the indication The response signaling returned by the SIP signaling completed by the session connection establishment;
  • the processing module is specifically configured to: obtain, according to the response signaling of the SIP signaling that is received by the communication module, the SIP message, which is configured by the CS core network, to obtain a response message of the connection message that can be processed by the CS core network element;
  • the communication module 1001 is specifically configured to: return, to the CS core network element, a response message of the connection message obtained by the processing module.
  • the communication module 1001 is further configured to: after sending the RAB allocation response message corresponding to the RAB allocation request message to the CS core network element, receive the ringing sent by the CS core network element Message
  • the processing module 1002 is further configured to: convert the ringing message received by the communication module into SIP signaling that indicates that the called party plays a ringback tone to the calling party;
  • the communication module 1001 is further configured to: send, by the eNB, the SIP signaling that is obtained by converting the processing module to the caller to play a ringback tone to the UE.
  • the communication module 1001 is further configured to: associate the connection management request with a letter After the network element is sent to the CS core network, the message that the current call returned by the CS core network element is being processed is received;
  • the processing module is further configured to: convert, by the communication module, a message that the current call is being processed into a SIP message indicating a progress of the session;
  • the communication module 1001 is further configured to: send the SIP message indicating the progress of the session obtained by the processing module to the UE by using the eNB.
  • the communication module 1001 is specifically configured to: receive a paging message sent by the network element of the CS core network, where the paging message carries a session parameter;
  • the processing module 1002 is specifically configured to: acquire the session parameter carried in the paging message received by the communication module;
  • the communication module 1001 is specifically configured to: send the session parameter obtained by the processing module to the MME, and receive a paging response returned by the MME after paging to the UE according to the session parameter;
  • the processing module 1002 is specifically configured to: convert a paging response returned by the MME received by the communication module into a paging response that can be processed by the network element of the CS core network;
  • the communication module 1001 is specifically configured to: send a paging response that can be processed by the CS core network element obtained by the processing module to the CS core network element, and receive the network element sent by the CS core network element.
  • Voice call setup request ;
  • the processing module 1002 is specifically configured to: obtain an SIP request message for creating a session according to the voice call setup request received by the communication module;
  • the communication module 1001 is specifically configured to: send, by using the eNB, the SIP request message of the created session obtained by the processing module to the UE, and receive, by the eNB, the returned UE that is returned by the UE for the created session.
  • the processing module is specifically configured to: convert an acknowledgement message of the SIP request message for the session created by the communication module into a voice call confirmation message that can be processed by the CS core network element;
  • the communication module 1001 is specifically configured to: send the processing module to the CS core network element Transmitting the obtained voice call confirmation message, and receiving a radio access bearer RAB allocation request sent by the CS core network element;
  • the processing module 1002 is specifically configured to: establish a voice bearer to obtain a bearer setup request according to the RAB allocation request received by the communications module;
  • the communication module 1001 is specifically configured to: send, to the MME, the bearer setup request obtained by the processing module, and receive, by the MME, between the UE and the proxy device according to the bearer setup request.
  • the bearer setup response returned after the VoLTE bearer;
  • the processing module is specifically configured to: obtain, according to the bearer setup response received by the communications module, an RAB allocation response that can be processed by the CS core network element corresponding to the RAB allocation request;
  • the communication module 1001 is specifically configured to: send, to the CS core network element, an RAB allocation response that is obtained by the processing module and that is corresponding to the RAB allocation request, and receive a connection confirmation message of the UE that is forwarded by the eNB;
  • the processing module is specifically configured to: convert the connection confirmation message received by the communication module into a connection message that can be processed by the CS core network element;
  • the communication module 1001 is specifically configured to: send, to the CS core network element, the connection message obtained by the processing module, and receive a response message sent by the CS core network element corresponding to the connection message;
  • the processing module is specifically configured to: convert a response message of the connection message received by the communication module into a SIP signaling indicating a connection confirmation;
  • the communication module 1001 is specifically configured to: send the SIP signaling indicating the connection confirmation obtained by the processing module to the UE by using the eNB.
  • the communication module 1001 is further configured to: after sending the RAB allocation response corresponding to the RAB allocation request to the CS core network element, receive the indication of the UE forwarded by the eNB The SIP signal that the calling party plays the ring back tone;
  • the processing module 1002 is further configured to: convert, by the communication module, the SIP signaling indicating that the called party plays the ringback tone to the calling party, to a ringing message that can be processed by the CS core network element;
  • the communication module 1001 is further configured to: send the ringing message obtained by the processing module conversion to the CS core network element.
  • the embodiment of the present invention further provides another proxy device.
  • the proxy device mainly includes processing.
  • the processor 1101 acquires the VoLTE bearer-related signaling of the eNB or the MME through the communication interface 1102, and converts the obtained VoLTE bearer-related signaling into CS voice bearer related signaling that can be processed by the CS core network element, and uses the communication interface 1102 to Transmitting the CS voice bearer related signaling to the CS core network element; and acquiring the CS voice bearer related signaling of the CS core network element by using the communication interface 1102, and acquiring the CS voice bearer
  • the related signaling is converted into the VoLTE bearer related signaling, and the converted VoLTE bearer related signaling is sent to the eNB or the MME through the communication interface 1102.
  • the processor may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or a transistor logic device, a discrete hardware component, and may implement or perform the embodiments of the present invention.
  • a general purpose processor can be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • FIG. 12 which mainly includes a receiving module 1201 and a sending module 1202, specifically:
  • the receiving module 1201 is configured to receive, according to the Long Term Evolution (LTE)-based voice VoLTE bearer related signaling sent by the proxy device, where the VoLTE bearer related signaling is a CS voice bearer of the proxy device to the circuit switched domain CS core network network element Related signaling conversion is obtained;
  • LTE Long Term Evolution
  • the sending module 1202 is configured to send the VoLTE bearer related signaling of the user equipment UE to the proxy device.
  • the processing module 1203 is further included;
  • the receiving module is specifically configured to: receive the authentication parameter sent by the proxy device;
  • the processing module is specifically configured to: generate a non-access stratum NAS message that carries the authentication parameter;
  • the sending module is specifically configured to: send a NAS message that carries the authentication parameter to the UE.
  • the receiving module is specifically configured to: receive an attach request of the user equipment UE sent by the eNB;
  • the sending module is specifically configured to: after receiving the attach request of the UE, return a request for activating a VoLTE bearer to the eNB, where the request for activating the VoLTE bearer carries a VoLTE bearer parameter.
  • the VoLTE bearer parameter includes a service level parameter QCI, an APN, and a destination address of the VoLTE bearer, and the destination address of the VoLTE bearer is an address of the proxy device.
  • the receiving module is specifically configured to: receive a bearer setup request sent by the proxy device;
  • the processing module is specifically configured to: establish, by the proxy device, a VoLTE bearer between the UE and the UE according to the bearer setup request;
  • the sending module is specifically configured to: return a bearer setup response to the proxy device.
  • the receiving module is specifically configured to: receive a session parameter sent by the proxy device, where the session parameter is carried in a paging message sent by the network element of the CS core network received by the proxy device;
  • the processing module is specifically configured to: page to the UE according to the session parameter;
  • the sending module is specifically configured to: return a paging response to the proxy device;
  • the receiving module is specifically configured to: receive a bearer setup request sent by the proxy device;
  • the processing module is specifically configured to: establish a VoLTE bearer between the UE and the proxy device according to the bearer setup request;
  • the sending module is specifically configured to: return a bearer setup response to the proxy device.
  • the embodiment of the present invention further provides another MME.
  • the MME mainly includes a processor 1301 and Communication interface 1302, processor 1301 through communication interface 1302 Receiving the VoLTE bearer related signaling sent by the proxy device, where the VoLTE bearer related signaling is obtained by the proxy device to convert the CS voice bearer related signaling of the CS core network element of the circuit switched domain; and to the proxy device by using the communication interface 1302 Transmitting the VoLTE bearer related signaling of the user equipment UE.
  • the processor may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or a transistor logic device, a discrete hardware component, and may implement or perform the embodiments of the present invention.
  • a general purpose processor can be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the structure of the eNB provided by the embodiment of the present invention is as shown in FIG. 14 , and mainly includes a receiving module 1401 and a sending module 1402, specifically:
  • the receiving module 1401 is configured to receive, according to the Long Term Evolution (LTE)-based voice VoLTE bearer related signaling sent by the proxy device, where the VoLTE bearer related signaling is a CS voice bearer of the proxy device to the circuit switched domain CS core network network element Related signaling conversion is obtained;
  • LTE Long Term Evolution
  • the sending module 1402 is configured to send the VoLTE bearer related signaling of the user equipment UE to the proxy device.
  • the eNB in this embodiment refers to the description of the eNB in each communication process, and the repeated description is not repeated.
  • the eNB mainly includes a processor 1501. And the transceiver 1502, the processor 1501 receives the VoLTE bearer related signaling sent by the proxy device by using the transceiver 1502, where the VoLTE bearer related signaling is obtained by the proxy device to convert the CS voice bearer related signaling of the CS core network network element. Transmitting the VoLTE bearer related signaling of the UE to the proxy device through the transceiver 1502.
  • the processor can be a general purpose processor, a digital signal processor, an application specific integrated circuit,
  • the methods, steps, and logic blocks disclosed in the embodiments of the present invention may be implemented or executed by field programmable gate arrays or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the specific process of implementing the VoLTE service by using the proxy device is as follows:
  • Step 1601 The proxy device acquires the Long-Evolved LTE-based voice VoLTE bearer-related signaling of the base station eNB or the mobility management entity MME, and converts the obtained VoLTE bearer-related signaling into a CS voice that can be processed by the CS core network element of the circuit-switched domain. Carrying the relevant signaling, and transmitting the converted CS voice bearer related signaling to the CS core network element;
  • Step 1602 The proxy device acquires the CS voice bearer related signaling of the CS core network element, and converts the obtained CS voice bearer related signaling into a VoLTE bearer related signaling, and associates the converted VoLTE bearer. Signaling is sent to the eNB or the MME.
  • each communication process in the VoLTE service process by the proxy device can be referred to the related description of the above system part, and the repeated description is not repeated.
  • the proxy device receives an authentication request of the CS core network element, the authentication request carries at least an authentication parameter, and sends an authentication parameter in the authentication request to the MME;
  • the proxy device receives an authentication response sent by the user equipment UE according to the authentication parameter, and converts the authentication response into an authentication response that can be processed by the CS core network element.
  • the CS core network element sends an authentication response that can be processed by the CS core network element.
  • the proxy device receives the session initiation protocol SIP registration request signaling of the user equipment UE forwarded by the eNB, where the SIP registration request signaling carries the identifier information of the UE, and is registered according to the SIP.
  • the location information update request is generated by the identifier information of the UE that is carried in the request signaling, and the location update request is sent to the CS core network element.
  • the proxy device receives a SIP request message for creating a session of the user equipment UE, and the SIP request message of the created session carries a session parameter, and converts the SIP request message of the created session into the CS core.
  • the connection management request related signaling that can be processed by the network element, and the connection management request related signaling is sent to the CS core network element;
  • the proxy device receives a radio access bearer RAB allocation request message returned by the CS core network element according to the connection management request related signaling, establishes a voice bearer according to the RAB allocation request message, and allocates a request according to the RAB. Generating a bearer setup request, and sending the bearer setup request to the MME;
  • the proxy device receives a bearer setup response returned by the MME after establishing a VoLTE bearer with the UE according to the bearer setup request, and obtains the CS core network according to the bearer setup response.
  • the RAB allocation response message corresponding to the RAB allocation request message that can be processed by the network element, and the RAB allocation response message corresponding to the RAB allocation request message is sent to the CS core network network element;
  • the proxy device receives the connection message returned by the CS core network element, and obtains SIP signaling indicating that the session connection is established according to the connection message, and sends the indication that the session connection is established to the UE by the eNB.
  • a response message of the connection message that can be processed by the CS core network element, and a response message of the connection message is returned to the CS core network element.
  • the proxy device sends a ringing message sent by the network element of the CS core network to the CS core network element, after receiving the RAB allocation response message corresponding to the RAB allocation request message, and the ringing message is sent by the CS core network element.
  • the bell message is converted into SIP signaling indicating that the called party plays the ring back tone to the calling party, and the SIP signaling indicating that the called party plays the ring back tone to the calling party is sent to the UE through the eNB.
  • the proxy device sends the connection management request related signaling to the CS After receiving the core network element, the message that the current call is being processed by the CS core network element is received, and the message that the current call is processing is converted into a SIP message indicating the progress of the session, and the SIP message indicating the progress of the session is received. Transmitted to the UE by the eNB.
  • the proxy device receives a paging message sent by the network element of the CS core network, where the paging message carries a session parameter, and obtains the session parameter carried in the paging message, and the Transmitting the session parameter to the MME, and receiving a paging response returned by the MME after paging to the UE according to the session parameter, and converting the paging response returned by the MME to the CS core network element capable of processing a paging response, sending, to the CS core network element, a paging response that can be processed by the CS core network element;
  • the voice call confirmation message that can be processed by the element, and the voice call confirmation message is sent to the CS core network element;
  • a radio access bearer RAB allocation request sent by the CS core network element establishing a voice bearer according to the RAB allocation request, obtaining a bearer setup request, and sending the bearer setup request to the MME
  • the RAB allocates the requested RAB allocation response, and sends an RAB allocation response corresponding to the RAB allocation request to the CS core network element;
  • the proxy device After receiving the connection confirmation message of the UE forwarded by the eNB, the proxy device converts the connection confirmation message into a connection message that can be processed by the CS core network element, and sends the connection message to the CS core network element.
  • the connection message after receiving the response message corresponding to the connection message sent by the CS core network element, converting the response message of the connection message into SIP signaling indicating connection confirmation, and the SIP indicating the connection confirmation Signaling is sent to the UE by the eNB.
  • the UE receives an indication from the eNB that the called party plays a ringback tone to the calling party.
  • the SIP signaling, the SIP signaling indicating that the called party plays the ringback tone to the calling party is converted into a ringing message that can be processed by the CS core network element, and the ringing message is sent to the CS core. Network element.
  • the specific process of implementing the VoLTE service by using the MME is as follows:
  • Step 1701 The MME receives the Long Term Evolution (LTE)-based voice VoLTE bearer-related signaling sent by the proxy device, where the VoLTE bearer related signaling is a CS voice bearer related signaling conversion of the proxy device to the circuit switched domain CS core network network element.
  • LTE Long Term Evolution
  • Step 1702 The MME sends the VoLTE bearer related signaling of the user equipment UE to the proxy device.
  • each communication process in the VoLTE service process by the MME can be referred to the related description in the system part above, and the repeated description is not repeated.
  • the specific process of implementing the VoLTE service by the eNB is as follows:
  • Step 1801 The eNB receives the Long Term Evolution (LTE)-based voice VoLTE bearer related signaling sent by the proxy device, where the VoLTE bearer related signaling is a CS voice bearer related signaling conversion of the proxy device to the circuit switched domain CS core network network element.
  • LTE Long Term Evolution
  • Step 1802 The eNB sends the VoLTE bearer related signaling of the user equipment UE to the proxy device.
  • each communication process in the VoLTE service process by the eNB can be referred to the related description in the system part above, and the repeated description is not repeated.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明公开了一种VoLTE业务实现方法、***及设备，用以克服现有VoLTE业务实现方案中，由于需要部署IMS***影响了VoLTE的部署进度的问题。在LTE网络中设置代理设备，该代理设备分别与电路交换域CS核心网网元，基站eNB以及移动性管理实体MME相连接，所述代理设备包括通信模块和处理模块；所述处理模块将VoLTE承载相关信令转换为电路交换域CS核心网网元能够处理的CS语音承载相关信令并发送给所述CS核心网网元；或者，将CS语音承载相关信令转换为VoLTE承载相关信令并发送给所述eNB或所述MME。

Description

一种VoLTE业务实现方法、***及设备 技术领域
本发明涉及通信技术领域，尤其涉及一种VoLTE业务实现方法、***及设备。
背景技术
第二代(2nd Generation，2G)移动通信网络中和第三代(3rd Generation，3G)移动通信网络中，基站同时接入核心网电路域和分组域，如图1所示。语音业务通过基站接入核心网电路域，由核心网电路域分析被叫号码，将语音业务接续到被叫号码。对于互联网协议(Internet Protocol，IP)数据业务，由核心网分组域建立IP数据业务通道，将该IP数据业务接入对应的IP数据业务网，如因特网或专网。另外，2G/3G网络中，短消息业务、语音智能网业务均由核心网电路域负责疏通。
***(4th Generation，4G)移动通信网络中，演进型基站(evolved NodeB，eNB)仅接入演进型分组核心网(Evolved Packet Core，EPC)，如图2所示，EPC包括服务网关(Serving Gateway，SGW)和分组数据网关(Packet Date Network Gateway，PGW)，可能还包括移动性管理实体(Mobility Management Entity，MME)。相比于2G/3G网络，4G网络只有分组交换域(Packet Switch Domain，简称PS域)，没有电路交换域(Circuit Switched Domain，简称CS域)。
基于LTE的语音(Voice over LTE，简称VoLTE；LTE，全称Long Term Evolution，长期演进)，是将语音业务承载在4G网络。基于多媒体子***(IP Multimedia Subsystem，IMS)的VoLTE实现方案，能够配合4G核心网实现基于PS域的语音业务。语音业务通过EPC中的IP数据通道接入IMS，由IMS分析被叫号码，将呼叫接续到被叫用户，并由IMS负责语音业务控制。
基于IMS的VoLTE，作为一个全新的实现方案，需要部署IMS***，但是由于IMS***复杂，IMS***的部署涉及多个网元和接口，使得IMS***的部署影响了VoLTE的部署进度。
发明内容
本发明实施例提供一种VoLTE业务实现方法、***及设备，用以克服现有VoLTE业务实现方案中，由于需要部署IMS***影响了VoLTE的部署进度的问题。
本发明实施例提供的具体技术方案如下：
第一方面，提供了一种代理设备，所述代理设备分别与电路交换域CS核心网网元，基站eNB以及移动性管理实体MME相连接，所述代理设备包括通信模块和处理模块；
所述通信模块，用于获取所述eNB或所述MME的基于长期演进LTE的语音VoLTE承载相关信令；
所述处理模块，用于将所述通信模块获得的所述VoLTE承载相关信令转换为所述CS核心网网元能够处理的CS语音承载相关信令；
所述通信模块，用于将所述处理模块转换得到的所述CS语音承载相关信令发送给所述CS核心网网元；或者，
所述通信模块，用于获取所述CS核心网网元的CS语音承载相关信令；
所述处理模块，用于将所述通信模块获取的所述CS语音承载相关信令转换为基于长期演进LTE的语音VoLTE承载相关信令；
所述通信模块，用于将所述处理模块转换得到的所述VoLTE承载相关信令发送给所述eNB或所述MME。
结合第一方面，在第一种可能的实现方式中，所述通信模块还用于：
接收所述CS核心网网元的鉴权请求，所述鉴权请求中至少携带鉴权参数；
所述处理模块，还用于：
获取所述通信模块接收的所述鉴权请求中的鉴权参数；
所述通信模块，还用于：
将所述处理模块获取的所述鉴权参数发送给所述MME；
所述通信模块，还用于：
接收所述MME发送的由用户设备UE根据所述鉴权参数返回的鉴权响应；
所述处理模块，还用于：
将所述通信模块接收的所述鉴权响应转换为所述CS核心网网元能够处理的鉴权响应；
所述通信模块，还用于：
将所述处理模块转换获得的所述CS核心网网元能够处理的鉴权响应发送给所述CS核心网网元。
结合第一方面，在第二种可能的实现方式中，所述通信模块，还用于：
接收所述eNB转发的用户设备UE的会话发起协议SIP注册请求信令，所述SIP注册请求信令中携带所述UE的标识信息；
所述处理模块，还用于：
根据所述通信模块接收的所述SIP注册请求信令中携带的所述UE的标识信息生成位置更新请求；
所述通信模块，还用于：
将所述处理模块生成的所述位置更新请求发送给所述CS核心网网元，以及接收所述CS核心网网元根据所述位置更新请求返回的位置更新接受消息，所述位置更新接受消息用于指示接受所述UE的SIP注册请求；
所述处理模块，还用于：
根据所述通信模块接收的所述位置更新接受消息获得SIP注册完成信令；
所述通信模块，还用于：
向所述eNB发送所述处理模块获得的所述SIP注册完成信令。
结合第一方面至第二种可能的实现方式中的任意一种，在第三种可能的 实现方式中，所述通信模块，具体用于：
接收所述eNB转发的用户设备UE的创建会话的SIP请求消息，所述创建会话的SIP请求消息中携带会话参数；
所述处理模块，具体用于：
将所述通信模块接收的所述创建会话的SIP请求消息转换为所述CS核心网网元能够处理的连接管理请求相关信令；
所述通信模块，具体用于：
将所述处理模块转换得到的所述连接管理请求相关信令发送给所述CS核心网网元，以及接收所述CS核心网网元根据所述连接管理请求相关信令返回的无线接入承载RAB分配请求消息；
所述处理模块，具体用于：
根据所述通信模块接收的所述RAB分配请求消息建立语音承载，并根据所述RAB分配请求消息生成承载建立请求；
所述通信模块，具体用于：
将所述处理模块生成的所述承载建立请求发送给所述MME，以及接收所述MME在根据所述承载建立请求为所述代理设备建立与所述UE之间的VoLTE承载后返回的承载建立应答；
所述处理模块，具体用于：
根据所述承载建立应答获得所述CS核心网网元能够处理的对应所述RAB分配请求消息的RAB分配响应消息；
所述通信模块，具体用于：
向所述CS核心网网元发送所述处理模块获得的对应所述RAB分配请求消息的RAB分配响应消息，以及接收所述CS核心网网元返回的连接消息；
所述处理模块，具体用于：
根据所述通信模块接收的所述连接消息获得指示会话连接建立完成的SIP信令；
所述通信模块，具体用于：
通过所述eNB向所述UE发送所述处理模块获得的所述指示会话连接建立完成的SIP信令，并接收所述eNB转发的所述UE对应所述指示会话连接建立完成的SIP信令返回的响应信令；
所述处理模块，具体用于：
根据所述通信模块接收的对应所述指示会话连接建立完成的SIP信令的响应信令获得所述CS核心网网元能够处理的所述连接消息的响应消息；
所述通信模块，具体用于：
向所述CS核心网网元返回所述处理模块获得的所述连接消息的响应消息。
结合第一方面的第三种可能的实现方式，在第四种可能的实现方式中，
所述通信模块，还用于：
向所述CS核心网网元发送对应所述RAB分配请求消息的RAB分配响应消息后，接收所述CS核心网网元发送的振铃消息；
所述处理模块，还用于：
将所述通信模块接收的所述振铃消息转换为指示被叫向主叫播放回铃音的SIP信令；
所述通信模块，还用于：
将所述处理模块转换获得的所述指示被叫向主叫播放回铃音的SIP信令通过所述eNB发送给所述UE。
结合第一方面的第三种可能的实现方式，在第五种可能的实现方式中，
所述通信模块，还用于：
将所述连接管理请求相关信令发送给所述CS核心网网元后，接收所述CS核心网网元返回的当前呼叫正在处理的消息；
所述处理模块，还用于：
将所述通信模块接收的所述当前呼叫正在处理的消息转换为指示会话进度的SIP消息；
所述通信模块，还用于：
将所述处理模块转换获得的所述指示会话进度的SIP消息通过所述eNB发送给所述UE。
结合第一方面至第二种可能的实现方式中的任意一种，在第六种可能的实现方式中，
所述通信模块，具体用于：
接收所述CS核心网网元发送的寻呼消息，所述寻呼消息中携带会话参数；
所述处理模块，具体用于：
获取所述通信模块接收的所述寻呼消息中携带的所述会话参数；
所述通信模块，具体用于：
将所述处理模块获取的所述会话参数发送给所述MME，接收所述MME根据所述会话参数寻呼到所述UE后返回的寻呼响应；
所述处理模块，具体用于：
将所述通信模块接收的所述MME返回的寻呼响应转换为所述CS核心网网元能够处理的寻呼响应；
所述通信模块，具体用于：
将所述处理模块转换获得的所述CS核心网网元能够处理的寻呼响应发送给所述CS核心网网元，接收所述CS核心网网元发送的语音呼叫建立请求；
所述处理模块，具体用于：
根据所述通信模块接收的所述语音呼叫建立请求获得创建会话的SIP请求消息；
所述通信模块，具体用于：
通过所述eNB向所述UE发送所述处理模块获得的所述创建会话的SIP请求消息，接收所述eNB转发的所述UE返回的针对所述创建会话的SIP请求消息的确认消息；
所述处理模块，具体用于：
将所述通信模块接收的针对所述创建会话的SIP请求消息的确认消息转 换为所述CS核心网网元能够处理的语音呼叫确认消息；
所述通信模块，具体用于：
向所述CS核心网网元发送所述处理模块转换获得的所述语音呼叫确认消息，以及接收所述CS核心网网元发送的无线接入承载RAB分配请求；
所述处理模块，具体用于：
根据所述通信模块接收的所述RAB分配请求建立语音承载获得承载建立请求；
所述通信模块，具体用于：
向所述MME发送所述处理模块转换获得的所述承载建立请求，接收所述MME在根据所述承载建立请求建立所述UE与所述代理设备之间的VoLTE承载之后返回的承载建立响应；
所述处理模块，具体用于：
根据所述通信模块接收的所述承载建立响应获得所述CS核心网网元能够处理的对应所述RAB分配请求的RAB分配响应；
所述通信模块，具体用于：
向所述CS核心网网元发送所述处理模块获得的对应所述RAB分配请求的RAB分配响应，以及接收所述eNB转发的所述UE的连接确认消息；
所述处理模块，具体用于：
将所述通信模块接收的所述连接确认消息转换为所述CS核心网网元能够处理的连接消息；
所述通信模块，具体用于：
向所述CS核心网网元发送所述处理模块转换获得的所述连接消息，接收所述CS核心网网元发送的对应所述连接消息的响应消息；
所述处理模块，具体用于：
将所述通信模块接收的所述连接消息的响应消息转换为指示连接确认的SIP信令；
所述通信模块，具体用于：
将所述处理模块转换获得的所述指示连接确认的SIP信令通过所述eNB发送给所述UE。
结合第一方面的第六种可能的实现方式，在第七种可能的实现方式中，所述通信模块，还用于：
向所述CS核心网网元发送对应所述RAB分配请求的RAB分配响应后，接收所述eNB转发的所述UE的指示被叫向主叫播放回铃音的SIP信令；
所述处理模块，还用于：
将所述通信模块接收的所述指示被叫向主叫播放回铃音的SIP信令转换为所述CS核心网网元能够处理的振铃消息；
所述通信模块，还用于：
将所述处理模块转换获得的所述振铃消息发送给所述CS核心网网元。
结合第一方面，在第八种可能的实现方式中，所述代理设备集成在无线网络控制器RNC或服务网关SGW中。
第二方面，提供了一种移动性管理实体MME，包括：
接收模块，用于接收代理设备发送的基于长期演进LTE的语音VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；
发送模块，用于向所述代理设备发送用户设备UE的VoLTE承载相关信令。
结合第二方面，在第一种可能的实现方式中，还包括处理模块；
所述接收模块具体用于：
接收所述代理设备发送的所述鉴权参数；
所述处理模块具体用于：
生成携带所述鉴权参数的非接入层NAS消息；
所述发送模块具体用于：
将携带所述鉴权参数的NAS消息发送给所述UE。
结合第二方面的第一种可能的实现方式，在第二种可能的实现方式中， 所述接收模块具体用于：
接收所述代理设备发送的承载建立请求；
所述处理模块具体用于：
根据所述承载建立请求为所述代理设备建立与所述UE之间的VoLTE承载；
所述发送模块具体用于：
向所述代理设备返回承载建立应答。
结合第二方面的第一种可能的实现方式，在第三种可能的实现方式中，所述接收模块具体用于：接收所述代理设备发送的会话参数，所述会话参数为所述代理设备接收的所述CS核心网网元发送的寻呼消息中携带；
所述处理模块具体用于：根据所述会话参数寻呼到所述UE；
所述发送模块具体用于：向所述代理设备返回寻呼响应；
所述接收模块具体用于：接收所述代理设备发送的承载建立请求；
所述处理模块具体用于：根据所述承载建立请求建立所述UE与所述代理设备之间的VoLTE承载；
所述发送模块具体用于：向所述代理设备返回承载建立响应。
第三方面，提供了一种基站eNB，包括：
接收模块，用于接收代理设备发送的基于长期演进LTE的语音VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；
发送模块，用于向代理设备发送用户设备UE的VoLTE承载相关信令。
第四方面，提供了一种VoLTE业务实现***，包括上述第三方面所述的基站eNB、上述第二方面任一所述的移动性管理实体MME、上述第一方面任一所述的代理设备以及电路交换域CS核心网网元；
所述代理设备分别连接所述eNB、所述MME和所述CS核心网网元；
所述代理设备用于将所述eNB或所述MME的基于LTE的语音VoLTE承载相关信令转换为所述CS核心网网元能够处理的CS语音承载相关信令，并 将所述CS语音承载相关信令发送给所述CS核心网网元；以及用于将所述CS核心网网元的CS语音承载相关信令转换为VoLTE承载相关信令，并发送给所述eNB或所述MME。
第五方面，提供了一种VoLTE业务实现方法，包括：
代理设备获取基站eNB或移动性管理实体MME的基于长期演进LTE的语音VoLTE承载相关信令，将获得的VoLTE承载相关信令转换为电路交换域CS核心网网元能够处理的CS语音承载相关信令，并将转换得到的所述CS语音承载相关信令发送给所述CS核心网网元；
所述代理设备获取所述CS核心网网元的CS语音承载相关信令，将获取的所述CS语音承载相关信令转换为VoLTE承载相关信令，并将转换得到的VoLTE承载相关信令发送给所述eNB或所述MME。
结合第五方面，在第一种可能的实现方式中，所述方法还包括：
所述代理设备接收所述CS核心网网元的鉴权请求，所述鉴权请求中至少携带鉴权参数，将所述鉴权请求中的鉴权参数发送给所述MME；
所述代理设备接收所述MME发送的由用户设备UE根据所述鉴权参数返回的鉴权响应，将所述鉴权响应转换为所述CS核心网网元能够处理的鉴权响应，向所述CS核心网网元发送所述CS核心网网元能够处理的鉴权响应。
结合第五方面，在第二种可能的实现方式中，所述方法还包括：
所述代理设备接收所述eNB转发的用户设备UE的会话发起协议SIP注册请求信令，所述SIP注册请求信令中携带所述UE的标识信息，根据所述SIP注册请求信令中携带的所述UE的标识信息生成位置更新请求，将所述位置更新请求发送给所述CS核心网网元；
所述代理设备接收所述CS核心网网元根据所述位置更新请求返回的位置更新接受消息，所述位置更新接受消息用于指示接受所述UE的SIP注册请求，并根据所述位置更新接受消息获得SIP注册完成信令，向所述eNB发送所述SIP注册完成信令。
结合第五方面至第二种可能的实现方式中的任意一种，在第三种可能的 实现方式中，主叫流程中，所述方法具体包括：
所述代理设备接收用户设备UE的创建会话的SIP请求消息，所述创建会话的SIP请求消息中携带会话参数，将所述创建会话的SIP请求消息转换为所述CS核心网网元能够处理的连接管理请求相关信令，将所述连接管理请求相关信令发送给所述CS核心网网元；
所述代理设备接收所述CS核心网网元根据所述连接管理请求相关信令返回的无线接入承载RAB分配请求消息，根据所述RAB分配请求消息建立语音承载，并根据所述RAB分配请求消息生成承载建立请求，将所述承载建立请求发送给所述MME；
所述代理设备接收所述MME在根据所述承载建立请求为所述代理设备建立与所述UE之间的VoLTE承载后返回的承载建立应答，并根据所述承载建立应答获得所述CS核心网网元能够处理的对应所述RAB分配请求消息的RAB分配响应消息，向所述CS核心网网元发送对应所述RAB分配请求消息的RAB分配响应消息；
所述代理设备接收所述CS核心网网元返回的连接消息，根据所述连接消息获得指示会话连接建立完成的SIP信令，通过所述eNB向所述UE发送所述指示会话连接建立完成的SIP信令，并接收所述eNB转发的所述UE对应所述指示会话连接建立完成的SIP信令返回的响应信令，根据所述指示会话连接建立完成的SIP信令的响应信令获得所述CS核心网网元能够处理的所述连接消息的响应消息，向所述CS核心网网元返回所述连接消息的响应消息。
结合第五方面的第三种可能的实现方式，在第四种可能的实现方式中，
所述代理设备向所述CS核心网网元发送对应所述RAB分配请求消息的RAB分配响应消息后，接收所述CS核心网网元发送的振铃消息，将所述振铃消息转换为指示被叫向主叫播放回铃音的SIP信令，将所述指示被叫向主叫播放回铃音的SIP信令通过所述eNB发送给所述UE。
结合第五方面的第三种可能的实现方式，在第五种可能的实现方式中，
所述代理设备将所述连接管理请求相关信令发送给所述CS核心网网元 后，接收所述CS核心网网元返回的当前呼叫正在处理的消息，将所述当前呼叫正在处理的消息转换为指示会话进度的SIP消息，将所述指示会话进度的SIP消息通过所述eNB发送给所述UE。
结合第五方面至第二种可能的实现方式中的任意一种，在第六种可能的实现方式中，被叫流程中，所述方法具体包括：
所述代理设备接收所述CS核心网网元发送的寻呼消息，所述寻呼消息中携带会话参数，获取所述寻呼消息中携带的所述会话参数，将所述会话参数发送给所述MME，接收所述MME根据所述会话参数寻呼到所述UE后返回的寻呼响应，将所述MME返回的寻呼响应转换为所述CS核心网网元能够处理的寻呼响应，向所述CS核心网网元发送所述CS核心网网元能够处理的寻呼响应；
所述代理设备接收所述CS核心网网元发送的语音呼叫建立请求，根据所述语音呼叫建立请求获得创建会话的SIP请求消息，通过所述eNB向所述UE发送所述创建会话的SIP请求消息，在接收到所述eNB转发的所述UE返回的针对所述创建会话的SIP请求消息的确认消息后，将针对所述创建会话的SIP请求消息的确认消息转换为所述CS核心网网元能够处理的语音呼叫确认消息，向所述CS核心网网元发送所述语音呼叫确认消息；
所述代理设备接收所述CS核心网网元发送的无线接入承载RAB分配请求，根据所述RAB分配请求建立语音承载获得承载建立请求，并向所述MME发送所述承载建立请求，接收所述MME在根据所述承载建立请求建立所述UE与所述代理设备之间的VoLTE承载之后返回的承载建立响应，根据所述承载建立响应获得所述CS核心网网元能够处理的对应所述RAB分配请求的RAB分配响应，向所述CS核心网网元发送对应所述RAB分配请求的RAB分配响应；
所述代理设备接收所述eNB转发的所述UE的连接确认消息后，将所述连接确认消息转换为所述CS核心网网元能够处理的连接消息，向所述CS核心网网元发送所述连接消息，接收所述CS核心网网元发送的对应所述连接消 息的响应消息后，将所述连接消息的响应消息转换为指示连接确认的SIP信令，将所述指示连接确认的SIP信令通过所述eNB发送给所述UE。
结合第五方面第六种可能的实现方式，在第七种可能的实现方式中，
所述代理设备向所述CS核心网网元发送对应所述RAB分配请求的RAB分配响应后，接收所述eNB转发的所述UE的指示被叫向主叫播放回铃音的SIP信令，将所述指示被叫向主叫播放回铃音的SIP信令转换为所述CS核心网网元能够处理的振铃消息，将所述振铃消息发送给所述CS核心网网元。
第六方面，提供了一种VoLTE业务实现方法，包括：
移动性管理实体MME接收代理设备发送的基于长期演进LTE的语音VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；
所述MME向所述代理设备发送用户设备UE的VoLTE承载相关信令。
结合第六方面，在第一种可能的实现方式中，所述方法还包括：
所述MME接收所述代理设备发送的所述鉴权参数；
所述MME生成携带所述鉴权参数的非接入层NAS消息；
所述MME将携带所述鉴权参数的NAS消息发送给所述UE。
结合第六方面的第一种可能的实现方式，在第二种可能的实现方式中，所述方法还包括：
所述MME接收所述代理设备发送的承载建立请求；
所述MME根据所述承载建立请求为所述代理设备建立与所述UE之间的VoLTE承载；
所述MME向所述代理设备返回承载建立应答。
结合第六方面的第一种可能的实现方式，在第三种可能的实现方式中，被叫流程中所述方法具体包括：
所述MME接收所述代理设备发送的会话参数，所述会话参数为所述代理设备接收的所述CS核心网网元发送的寻呼消息中携带；
所述MME根据所述会话参数寻呼到所述UE后，向所述代理设备返回寻 呼响应，接收所述代理设备发送的承载建立请求；
所述MME根据所述承载建立请求建立所述UE与所述代理设备之间的VoLTE承载，向所述代理设备返回承载建立响应。
第七方面，提供了一种VoLTE业务实现方法，包括：
基站eNB接收代理设备发送的基于长期演进LTE的语音VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；
所述eNB向代理设备发送用户设备UE的VoLTE承载相关信令。
基于上述技术方案，本发明实施例中，通过在LTE网络侧设置代理设备，通过代理设备实现VoLTE承载相关信令和CS核心网网元能够处理的CS语音承载相关信令之间的转换，将VoLTE呼叫接入传统核心网(2G或3G)的CS域，通过传统核心网的CS域完成语音呼叫，实现了在没有部署IMS的场景下，利用传统核心网完成VoLTE业务。
附图说明
图1为2G/3G网络结构示意图；
图2为4G网络结构示意图；
图3为本发明实施例中LTE***架构示意图；
图4为本发明实施例中另一LTE***架构示意图；
图5为本发明实施例中鉴权加密过程示意图；
图6为本发明实施例中UE附着到LTE网络的过程示意图；
图7为本发明实施例中UE进行SIP注册过程示意图；
图8为本发明实施例中主叫流程示意图；
图9为本发明实施例中被叫流程示意图；
图10为本发明实施例中代理设备结构示意图；
图11为本发明实施例中另一代理设备结构示意图；
图12为本发明实施例中MME结构示意图；
图13为本发明实施例中另一MME结构示意图；
图14为本发明实施例中eNB结构示意图；
图15为本发明实施例中另一eNB结构示意图；
图16为本发明实施例中通过代理设备实现VoLTE业务的方法流程示意图；
图17为本发明实施例中MME实现VoLTE业务的方法流程示意图；
图18为本发明实施例中eNB实现VoLTE业务的方法流程示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
本发明实施例中，在LTE网络的网络侧设置代理设备，通过代理设备实现VoLTE的会话发起协议(Session Initiation Protocol，SIP)信令和CS核心网网元能够处理的CS信令之间的转换，其中，CS信令是指传统CS域中的语音信令，将VoLTE呼叫接入传统核心网(2G或3G)的CS域，通过传统核心网的CS域完成语音呼叫，实现了在没有部署IMS的场景下，利用传统核心网完成VoLTE业务。
具体地，在3G网络中，CS域中的语音信令为基于IuCS接口的语音信令，在2G网络中CS域中的语音信令为基于A接口的语音信令。
基于该发明构思，本发明提供的LTE***架构中，如图3所示，至少包括eNB、MME、代理设备以及CS核心网网元；代理设备分别与MME、eNB和CS核心网网元连接。
其中，CS核心网网元包括移动交换中心(Mobile Switching Center，MSC)和媒体网关(Media Gateway，MGW)，其中，MSC用于对CS业务进行控制 面处理，MGW用于对CS业务进行用户面处理。
具体地，MME和代理设备之间通过私有接口连接。
该***架构中，还包括SGW和PGW，eNB、MME、SGW和PGW之间按照LTE协议规定的连接关系进行连接。具体地，如图4所示，eNB分别连接MME和SGW，SGW与PGW连接，PGW接入核心网，MME与SGW连接。具体地，eNB通过S1-MME接口连接至MME，eNB通过S1-U接口连接至SGW。
其中，eNB、SGW、PGW以及因特网组成PS域用户面数据流的传输通路。MME、eNB、SGW以及代理设备形成控制面数据流的传输通路。MME、eNB、代理设备以及CS核心网网元形成语音数据流的传输通路。MME负责将PS域业务分配给SGW，将VoLTE业务分配给代理设备。
该***架构中，MME在eNB和代理设备之间建立VoLTE承载，该VoLTE承载至少包括以下一种：VoLTE信令承载，VoLTE语音承载。MME还用于完成对MSC的鉴权过程，以及完成对MSC的寻呼过程。代理设备将VoLTE承载转换为CS核心网网元能够处理的CS域的语音承载，其中，CS域的语音承载包括控制面承载和用户面承载，代理设备将用户面承载相关的数据发送给MGW，将控制面承载相关的信令发送给MSC。
一个具体实施中，代理设备可以为无线网络控制器(Radio Network Controller，RNC)或基站控制器(Base Station Controller，BSC)。做为SIP域与CS域之间的网关，代理设备负责完成SIP信令与CS信令之间的转换。UE按照现有协议规定的流程在EPC附着以及发起PS业务。SGW和PGW不需要建立VoLTE承载。
另一个具体实施中，代理设备可以在集成SGW功能的实体上实现，负责SIP信令与CS信令之间的转换。
该***架构中，代理设备还负责进行VoLTE承载处理和移动性处理，以及负责对IuCS接口或A接口传输的数据进行处理，以及对代理设备与集成该代理设备功能的网络实体之间的IuR接口传输的数据进行处理，该IuR接口 为代理设备与2G或3G网络的核心网网元之间的接口。
基于上述***架构，本发明实施例中，代理设备主要用于将eNB或MME的基于LTE的语音VoLTE承载相关信令转换为CS核心网网元能够处理的CS语音承载相关信令，并发送给CS核心网网元；以及用于将CS核心网网元的CS语音承载相关信令转换为VoLTE承载相关信令，并发送给eNB或MME。
本发明实施例中，CS语音承载相关信令指CS核心网网元能够处理的语音信令。
以下通过多个不同的处理过程对基于上述***架构的VoLTE的实现过程进行说明。
一、鉴权加密
如图5所述的鉴权加密过程中，代理设备接收CS核心网网元的鉴权请求(Authentication Request)，所述鉴权请求中至少携带鉴权参数，将所述鉴权请求中的鉴权参数发送给所述MME；以及接收所述MME发送的用户设备UE根据所述鉴权参数返回的鉴权响应(Authentication Response)，向所述CS核心网网元返回CS核心网网元能够处理的鉴权响应；所述MME接收所述代理设备发送的所述鉴权参数，生成携带所述鉴权参数的非接入层NAS消息，将携带所述鉴权参数的NAS消息发送给所述UE。
其中，鉴权请求对应的UE可以通过底层信令链路号确定，这里不是本发明所关注的内容，具体可参见现有协议中的规定，此处不再详述描述。
其中，鉴权参数包括但不限于RAND和AUTN。
其中，鉴权响应中包含RES。
鉴权加密的具体过程如下：
步骤501：UE初始附着在MME时，接收MME发送的鉴权请求；
步骤502：UE向MME返回鉴权响应；
步骤501至步骤502为LTE下对UE的第一次鉴权，对于本次鉴权过程代理设备不参与。
步骤503：CS核心网网元中的MSC向代理设备发送UE的鉴权请求；
步骤504：MME向UE发送UE的鉴权请求；
步骤506：UE向MME返回对鉴权请求的鉴权响应；
步骤507：MME向代理设备返回该UE的鉴权响应；
步骤508：代理设备将该UE的鉴权响应转换为CS核心网网元能够处理的鉴权响应，向MSC返回该CS核心网网元能够处理的鉴权响应；
步骤509：MSC向代理设备发送安全模式命令(Security Mode Commands)；
步骤510：RNC解析该安全模式命令中携带的密码对(CK、IK)，将该密码对发送给MME，由MME根据该密码对计算得到根密钥(Kasme)，获取到密钥。
二、UE附着到LTE网络
如图6所示的UE附着到LTE网络的过程中，MME接收所述eNB发送的用户设备UE的附着请求，在接受所述UE的附着请求后向所述eNB返回激活VoLTE承载的请求，所述激活VoLTE承载的请求中携带VoLTE承载参数；
eNB将所述激活VoLTE承载的请求中携带的VoLTE承载参数通知给所述UE。
其中，VoLTE承载参数包括但不限于业务等级参数(QCI)、接入点名称(Access point Name，APN)以及所述VoLTE承载的目的地址，所述VoLTE承载的目的地址为所述代理设备的地址。
UE附着到LTE网络的具体过程如下：
步骤601：UE发送附着请求(Attach Request)给eNB；
步骤602：eNB将该UE的附着请求发送给MME；
步骤603：MME在接受该UE的附着请求后向该eNB返回激活VoLTE承载的请求，该激活VoLTE承载的请求中携带VoLTE承载参数；
步骤604：eNB向UE发送UE能力查询(UE Capability Enquiry)消息，该UE能力查询消息中携带VoLTE承载参数；
步骤605：UE向eNB返回UE能力信息(UE Capability Information)；
步骤606：eNB进行RRC连接重配置(RRC Connection Reconfiguration；RRC，Radio Resource Control，无线资源控制)：接受UE的附着请求后，向UE发送附着接受(Attach Accept)消息，并向UE发起激活默认的EPS承载的请求，以及向UE发送上下文请求，以通知UE VoLTE承载的信息；
步骤607：UE向eNB发送RRC连接重配置完成(RRC Connection Reconfiguration Complete)消息；
步骤608：eNB向MME发送初始化上下文建立响应(Initial Context Setup Response)；
步骤609：UE向eNB发送附着完成(Attach Complete)消息；
步骤610：eNB向MME发送附着完成消息。
三、SIP注册过程
如图7所示的UE进行SIP注册的过程中，代理设备接收所述eNB转发的用户设备UE的会话发起协议SIP注册请求信令，所述SIP注册请求信令中携带所述UE的标识信息，根据所述SIP注册请求信令中携带的所述UE的标识信息生成CS核心网网元能够处理的位置更新请求，将所述位置更新请求发送给所述CS核心网网元；以及接收所述CS核心网网元根据所述位置更新请求返回的位置更新接受消息，所述位置更新接受消息用于指示接受所述UE的SIP注册请求，并根据所述位置更新接受消息向所述eNB发送SIP注册完成信令；
所述eNB将所述SIP注册完成信令转发给所述UE。
UE进行SIP注册的具体过程如下：
步骤701：eNB向代理设备发送UE的SIP注册(Register)请求；
步骤702：代理设备将该SIP注册请求转换为CS核心网网元能够处理的位置更新请求，向CS核心网网元MSC发送该位置更新请求；
步骤703：MSC向代理设备发送位置更新接受消息；
步骤704：代理设备通过eNB向UE发送200ok的SIP消息。
四、主叫流程
如图8所示的主叫流程中，代理设备接收用户设备UE的创建会话的SIP请求消息，所述创建会话的SIP请求消息中携带会话参数，将所述创建会话的SIP请求消息转换为CS核心网网元能够处理的连接管理请求相关信令，将所述连接管理请求相关信令发送给所述CS核心网网元；
以及接收所述CS核心网网元根据所述连接管理请求相关信令返回的无线接入承载RAB分配请求消息，根据所述RAB分配请求消息建立语音承载，并根据所述RAB分配请求消息生成承载建立请求发送给所述MME；
以及接收所述MME在根据所述承载建立请求为所述代理设备建立与所述UE之间的VoLTE承载后返回的承载建立应答，并根据所述承载建立应答获得CS核心网网元能够处理的对应所述RAB分配请求消息的RAB分配响应消息，向所述CS核心网网元发送对应所述RAB分配请求消息的RAB分配响应消息；
以及接收所述CS核心网网元返回的连接消息，根据所述连接消息获得指示会话连接建立完成的SIP信令，通过所述eNB向所述UE发送指示会话连接建立完成的SIP信令，并接收所述eNB转发的UE对应所述指示会话连接建立完成的SIP信令返回的响应信令，根据接收的对应所述指示会话连接建立完成的SIP信令的响应信令获得所述CS核心网网元能够处理的所述连接消息的响应消息，向所述CS核心网网元返回所述连接消息的响应消息。
主叫流程中，代理设备还根据所述承载建立应答向所述CS核心网网元发送对应所述RAB分配请求消息的RAB分配响应消息后，接收所述CS核心网网元发送的振铃消息，将所述振铃消息转换为指示被叫向主叫播放回铃音的SIP信令，将所述指示被叫向主叫播放回铃音的SIP信令通过所述eNB发送给所述UE。
主叫流程中，代理设备将所述连接管理请求相关信令发送给所述CS核心网网元后，接收所述CS核心网网元返回的当前呼叫正在处理的消息，将所述当前呼叫正在处理的消息转换为指示会话进度的SIP消息，将所述指示会话 进度的SIP消息通过eNB发送给所述UE。
其中，会话参数中至少包括主叫标识和被叫标识。
主叫的详细流程如下：
步骤801：eNB向代理设备发送UE的创建会话的SIP请求消息，即Invite消息，该Invite消息中携带会话参数；
步骤802：代理设备将Invite消息转换为CS核心网网元能够处理的连接管理请求相关信令，该连接管理请求相关信令包括连接管理服务请求(CM Service Request)和建立请求(Setup)，将CM Service Request和Setup发送给CS核心网网元MSC，以请求建立语音呼叫；
步骤803：MSC向代理设备发送当前呼叫正在处理的消息(Call Proceeding)；
步骤804：代理设备将当前呼叫正在处理的消息转换为指示会话进度的SIP消息，即SIP信令：183Session Progress，将183Session Progress通过eNB发送给UE，以通知UE当前呼叫正在处理；
步骤805：eNB向代理设备发送UE的Prack信令；
步骤806：代理设备通过eNB向UE发送确认信令，即SIP信令：200OK；
步骤807：MSC向代理设备发送RAB分配请求消息(RAB Assignment Request)；
步骤808：代理设备根据所述RAB分配请求消息建立语音承载，并根据所述RAB分配请求消息生成承载建立请求发送给所述MME；
步骤809：MME向UE发起建立VoLTE承载的流程，即根据承载建立请求激活目的EPS承载(Dedicated EPS Brearer)，向UE发送上下文请求(Context Request)；
步骤810：UE向MME返回上下文接受消息(Context Accept)；
步骤811：MME向代理设备发送承载建立应答；
步骤812：代理设备根据承载建立应答获得CS核心网网元能够处理的所述RAB分配请求消息的RAB分配响应(RAB Assignment Response)，向MSC 返回RAB分配响应；
步骤813：MSC向代理设备发送振铃消息(Alerting)；
步骤814：代理设备将所述振铃消息转换为指示被叫向主叫播放回铃音的SIP信令，即SIP信令：180Ring，通过eNB向UE发送180Ring；
步骤815：代理设备接收MSC发送的连接消息(Connect)；
步骤816：代理设备将连接消息转换为确认信令，即SIP信令：200OK，通过eNB向UE发送200OK；
步骤817：代理设备接收UE发送的SIP响应信令(ACK)；
步骤818：代理设备将SIP响应信令转换为CS核心网网元能够处理的连接响应消息(Connect ACK)，向MSC发送连接响应消息，至此语音连接建立成功。
五、被叫流程
如图9所示的被叫流程中，所述代理设备接收所述CS核心网网元发送的寻呼消息，所述寻呼消息中携带会话参数，获取所述寻呼消息中携带的所述会话参数，将所述会话参数发送给所述MME，接收所述MME根据所述会话参数寻呼到所述UE后返回的寻呼响应，将UE返回的寻呼响应转换为CS核心网网元能够处理的寻呼响应，并向所述CS核心网网元发送该CS核心网网元能够处理的寻呼响应；
以及接收所述CS核心网网元发送的语音呼叫建立请求，根据所述语音呼叫建立请求通过所述eNB向所述UE发送创建会话的SIP请求消息，在接收到所述eNB返回的所述UE针对所述创建会话的SIP请求消息的确认消息后，根据该针对所述创建会话的SIP请求消息的确认消息获得所述CS核心网网元能够处理的语音呼叫确认消息，向所述CS核心网网元发送该语音呼叫确认消息；
以及接收所述CS核心网网元发送的无线接入承载RAB分配请求，根据所述RAB分配请求建立语音承载，并向所述MME发送承载建立请求，接收所述MME在根据所述承载建立请求建立所述UE与所述代理设备之间的 VoLTE承载之后返回的承载建立响应，根据所述承载建立响应获得所述CS核心网网元能够处理的对应所述RAB分配请求的RAB分配响应，向所述CS核心网网元发送对应所述RAB分配请求的RAB分配响应；
以及接收所述eNB发送的所述UE的连接确认消息后，将所述连接确认消息转换为CS核心网网元能够处理的连接消息，向所述CS核心网网元发送所述连接消息，接收所述CS核心网网元发送的对应所述连接消息的响应消息后，将所述连接消息的响应消息转换为指示连接确认的SIP信令，将所述指示连接确认的SIP信令通过所述eNB发送给所述UE。
被叫流程中，所述代理设备向所述CS核心网网元发送对应所述RAB分配请求的RAB分配响应后，通过所述eNB接收所述UE的指示被叫向主叫播放回铃音的SIP信令，将所述指示被叫向主叫播放回铃音的SIP信令转换为所述CS核心网网元能够处理的振铃消息，将所述振铃消息发送给所述CS核心网网元。
其中，会话参数中至少包括主叫标识和被叫标识。
被叫的详细流程如下：
步骤901：CS核心网网元MSC向代理设备发送寻呼消息(Paging)，该寻呼消息中携带会话参数；
步骤902：代理设备将寻呼消息中携带的会话参数发送给MME，委托MME下发寻呼，具体地，代理设备通过与MME之间约定的消息携带该会话参数；
步骤903：MME根据会话参数寻呼被叫UE；
步骤904：UE响应MME的寻呼，发起建立VoLTE承载的过程，向MME发送PDN连接请求(PDN Connectivity Request；PDN，Packet Data Network，分组数据网)；
步骤905：MME激活UE的默认EPS承载(Default EPS Bearer)，向UE发送上下文请求(Context Request)；
步骤906：UE向MME返回上下文接受消息(Context Accept)；
步骤907：MME向代理设备返回寻呼响应，寻呼响应通过MME与代理设备之间约定的消息携带；
步骤908：代理设备将MME的寻呼响应转换为CS核心网网元能够处理的寻呼响应(Paging Response)，向MSC返回该CS核心网网元能够处理的寻呼响应；
步骤909：MSC向代理设备发送语音呼叫建立请求(Setup)；
步骤910：代理设备将Setup转换为创建会话的SIP请求消息，即Invite消息，将Invite消息通过eNB发送给UE；
步骤911：eNB向代理设备发送UE的指示会话进度的SIP消息，即SIP信令：183Session Progress；
步骤912：代理设备通过eNB向UE返回Prack信令；
步骤913：eNB向代理设备返回UE的确认信令，即SIP信令：200OK；
步骤914：代理设备将200OK转换为CS核心网网元能够处理的语音呼叫确认消息(Call Confirmed)，向MSC发送Call Confirmed；
步骤915：MSC向代理设备发送RAB分配请求(RAB Assignment Request)；
步骤916：代理设备向MME发送承载建立请求，具体地，该承载建立请求为代理设备与MME之间约定的消息；
步骤917：MME激活UE的目的EPS承载(Dedicated EPS Brearer)，向UE发送上下文请求(Context Request)；
步骤918：UE向MME发送上下文接受消息(Context Accept)；
步骤919：MME向代理设备返回承载建立响应；
步骤920：代理设备根据MME的承载建立响应获得CS核心网网元能够处理的RAB分配响应(RAB Assignment Response)，向MSC发送该RAB分配响应；
步骤921：eNB向代理设备发送UE的指示被叫向主叫播放回铃音的SIP信令，即SIP信令：180Ring；
步骤922：代理设备将180Ring转换为CS核心网网元能够处理的振铃消息(Alerting)，将Alerting发送给MSC；
步骤923：eNB向代理设备返回UE的连接确认消息，即SIP信令：200OK；
步骤924：代理设备将200OK转换为CS核心网网元能够处理的连接消息(Connect)，将Connect发送给MSC；
步骤925：MSC向代理设备发送连接响应消息(Connect ACK)；
步骤926：代理设备将Connect ACK转换为SIP响应(ACK)消息，将SIP响应消息发送给UE，至此被叫UE的语音连接建立成功。
基于同一发明构思，本发明实施例中提供的代理设备的结构如图10所示，主要包括通信模块1001和处理模块1002：
所述通信模块1001，用于获取基站eNB或移动性管理实体MME的基于长期演进LTE的语音VoLTE承载相关信令；
所述处理模块1002，用于将所述通信模块1001获得的VoLTE承载相关信令转换为电路交换域CS核心网网元能够处理的CS语音承载相关信令；
所述通信模块1001，用于将所述处理模块1002转换得到的所述CS语音承载相关信令发送给所述CS核心网网元；或者，
所述通信模块1001，用于获取所述CS核心网网元的CS语音承载相关信令；
所述处理模块1002，用于将所述通信模块1001获取的所述CS语音承载相关信令转换为VoLTE承载相关信令；
所述通信模块1001，用于将所述处理模块1002转换得到的VoLTE承载相关信令发送给所述eNB或所述MME。
在鉴权过程中，所述通信模块1001还用于：接收所述CS核心网网元的鉴权请求，所述鉴权请求中至少携带鉴权参数；
所述处理模块1002还用于：获取所述通信模块接收的所述鉴权请求中的鉴权参数；
所述通信模块1001还用于将所述处理模块获取的鉴权参数发送给所述 MME，接收所述MME发送的由用户设备UE根据所述鉴权参数返回的鉴权响应；
所述处理模块1002还用于：将所述通信模块接收的所述鉴权响应转换为所述CS核心网网元能够处理的鉴权响应；
所述通信模块1001还用于：将所述处理模块转换获得的所述CS核心网网元能够处理的鉴权响应发送给所述CS核心网网元。
在会话发起协议(SIP)注册过程中，所述通信模块1001还用于：接收所述eNB转发的用户设备UE的会话发起协议SIP注册请求信令，所述SIP注册请求信令中携带所述UE的标识信息；
所述处理模块1002还用于：根据所述通信模块接收的所述SIP注册请求信令中携带的所述UE的标识信息生成位置更新请求；
所述通信模块1001还用于：将所述处理模块生成的所述位置更新请求发送给所述CS核心网网元，以及接收所述CS核心网网元根据所述位置更新请求返回的位置更新接受消息，所述位置更新接受消息用于指示接受所述UE的SIP注册请求；
所述处理模块1002还用于：根据所述通信模块接收的所述位置更新接受消息获得SIP注册完成信令；
所述通信模块1001还用于：向所述eNB发送所述处理模块获得的所述SIP注册完成信令。
在主叫流程中，所述通信模块1001具体用于：接收eNB转发的UE的创建会话的SIP请求消息，所述创建会话的SIP请求消息中携带会话参数；
所述处理模块1002具体用于：将所述通信模块接收的所述创建会话的SIP请求消息转换为所述CS核心网网元能够处理的连接管理请求相关信令；
所述通信模块1001具体用于：将所述处理模块转换得到的所述连接管理请求相关信令发送给所述CS核心网网元，以及接收所述CS核心网网元根据所述连接管理请求相关信令返回的无线接入承载RAB分配请求消息；
所述处理模块1002具体用于：根据通信模块接收的所述RAB分配请求 消息建立语音承载，并根据所述RAB分配请求消息生成承载建立请求；
所述通信模块1001具体用于：将所述处理模块生成的所述承载建立请求发送给所述MME，以及接收所述MME在根据所述承载建立请求为所述代理设备建立与所述UE之间的VoLTE承载后返回的承载建立应答；
所述处理模块1002具体用于：根据所述承载建立应答获得所述CS核心网网元能够处理的对应所述RAB分配请求消息的RAB分配响应消息；
所述通信模块1001具体用于：向所述CS核心网网元发送所述处理模块获得的对应所述RAB分配请求消息的RAB分配响应消息，以及接收所述CS核心网网元返回的连接消息；
所述处理模块具体用于：根据所述通信模块1001接收的所述连接消息获得SIP注册完成信令；
所述通信模块1001具体用于：通过所述eNB向所述UE发送所述处理模块获得的所述指示会话连接建立完成的SIP信令，并接收所述eNB转发的所述UE对应所述指示会话连接建立完成的SIP信令返回的响应信令；
所述处理模块具体用于：根据所述通信模块接收的对应所述指示会话连接建立完成的SIP信令的响应信令获得所述CS核心网网元能够处理的所述连接消息的响应消息；
所述通信模块1001具体用于：向所述CS核心网网元返回所述处理模块获得的所述连接消息的响应消息。
在主叫流程中，所述通信模块1001还用于：向所述CS核心网网元发送对应所述RAB分配请求消息的RAB分配响应消息后，接收所述CS核心网网元发送的振铃消息；
所述处理模块1002还用于：将所述通信模块接收的所述振铃消息转换为指示被叫向主叫播放回铃音的SIP信令；
所述通信模块1001还用于：将所述处理模块转换获得的所述指示被叫向主叫播放回铃音的SIP信令通过所述eNB发送给所述UE。
在主叫流程中，所述通信模块1001还用于：将所述连接管理请求相关信 令发送给所述CS核心网网元后，接收所述CS核心网网元返回的当前呼叫正在处理的消息；
所述处理模块还用于：将所述通信模块接收的所述当前呼叫正在处理的消息转换为指示会话进度的SIP消息；
所述通信模块1001还用于：将所述处理模块转换获得的所述指示会话进度的SIP消息通过所述eNB发送给所述UE。
在被叫流程中，所述通信模块1001具体用于：接收所述CS核心网网元发送的寻呼消息，所述寻呼消息中携带会话参数；
所述处理模块1002具体用于：获取所述通信模块接收的所述寻呼消息中携带的所述会话参数；
所述通信模块1001具体用于：将所述处理模块获得的所述会话参数发送给所述MME，接收所述MME根据所述会话参数寻呼到所述UE后返回的寻呼响应；
所述处理模块1002具体用于：将所述通信模块接收的所述MME返回的寻呼响应转换为所述CS核心网网元能够处理的寻呼响应；
所述通信模块1001具体用于：将所述处理模块转换获得的所述CS核心网网元能够处理的寻呼响应发送给所述CS核心网网元，接收所述CS核心网网元发送的语音呼叫建立请求；
所述处理模块1002具体用于：根据所述通信模块接收的所述语音呼叫建立请求获得创建会话的SIP请求消息；
所述通信模块1001具体用于：通过所述eNB向所述UE发送所述处理模块获得的所述创建会话的SIP请求消息，接收所述eNB转发的所述UE返回的针对所述创建会话的SIP请求消息的确认消息；
所述处理模块，具体用于：将所述通信模块接收的针对所述创建会话的SIP请求消息的确认消息转换为所述CS核心网网元能够处理的语音呼叫确认消息；
所述通信模块1001具体用于：向所述CS核心网网元发送所述处理模块 转换获得的所述语音呼叫确认消息，以及接收所述CS核心网网元发送的无线接入承载RAB分配请求；
所述处理模块1002具体用于：根据所述通信模块接收的所述RAB分配请求建立语音承载获得承载建立请求；
所述通信模块1001具体用于：向所述MME发送所述处理模块转换获得的所述承载建立请求，接收所述MME在根据所述承载建立请求建立所述UE与所述代理设备之间的VoLTE承载之后返回的承载建立响应；
所述处理模块，具体用于：根据所述通信模块接收的所述承载建立响应获得所述CS核心网网元能够处理的对应所述RAB分配请求的RAB分配响应；
所述通信模块1001具体用于：向所述CS核心网网元发送所述处理模块获得的对应所述RAB分配请求的RAB分配响应，以及接收所述eNB转发的所述UE的连接确认消息；
所述处理模块具体用于：将所述通信模块接收的所述连接确认消息转换为所述CS核心网网元能够处理的连接消息；
所述通信模块1001具体用于：向所述CS核心网网元发送所述处理模块转换获得的所述连接消息，接收所述CS核心网网元发送的对应所述连接消息的响应消息；
所述处理模块，具体用于：将所述通信模块接收的所述连接消息的响应消息转换为指示连接确认的SIP信令；
所述通信模块1001具体用于：将所述处理模块转换获得的所述指示连接确认的SIP信令通过所述eNB发送给所述UE。
在被叫流程中，所述通信模块1001还用于：向所述CS核心网网元发送对应所述RAB分配请求的RAB分配响应后，接收所述eNB转发的所述UE的指示被叫向主叫播放回铃音的SIP信令；
所述处理模块1002还用于：将所述通信模块接收的所述指示被叫向主叫播放回铃音的SIP信令转换为所述CS核心网网元能够处理的振铃消息；
所述通信模块1001还用于：将所述处理模块转换获得的所述振铃消息发送给所述CS核心网网元。
相应地，本发明实施例还提供了另一种代理设备，该代理设备的具体实施可参见上述关于代理设备的描述，重复之处不再赘述，如图11所示，该代理设备主要包括处理器1101和通信接口1102。处理器1101通过通信接口1102获取eNB或MME的基于VoLTE承载相关信令，将获得的VoLTE承载相关信令转换为CS核心网网元能够处理的CS语音承载相关信令，并通过通信接口1102将转换得到的所述CS语音承载相关信令发送给所述CS核心网网元；以及通过通信接口1102获取所述CS核心网网元的CS语音承载相关信令，将获取的所述CS语音承载相关信令转换为VoLTE承载相关信令，并通过通信接口1102将转换得到的VoLTE承载相关信令发送给所述eNB或所述MME。代理设备的具体实施可参见上述各通信过程的具体描述，此处不再赘述。其中处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
基于同一发明构思，本发明实施例提供的MME的具体结构如图12所示，主要包括接收模块1201和发送模块1202，具体地：
接收模块1201，用于接收所述代理设备发送的基于长期演进LTE的语音VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；
发送模块1202，用于向代理设备发送用户设备UE的VoLTE承载相关信令。
在鉴权过程中，还包括处理模块1203；
所述接收模块具体用于：接收所述代理设备发送的所述鉴权参数；
所述处理模块具体用于：生成携带所述鉴权参数的非接入层NAS消息；
所述发送模块具体用于：将携带所述鉴权参数的NAS消息发送给所述UE。
在附着过程中，所述接收模块具体用于：接收所述eNB发送的用户设备UE的附着请求；
所述发送模块具体用于：在接受所述UE的附着请求后向所述eNB返回激活VoLTE承载的请求，所述激活VoLTE承载的请求中携带VoLTE承载参数。
其中，所述VoLTE承载参数包括业务等级参数QCI、APN以及所述VoLTE承载的目的地址，所述VoLTE承载的目的地址为所述代理设备的地址。
在主叫流程中，所述接收模块具体用于：接收所述代理设备发送的承载建立请求；
所述处理模块具体用于：根据所述承载建立请求为所述代理设备建立与所述UE之间的VoLTE承载；
所述发送模块具体用于：向所述代理设备返回承载建立应答。
在被叫流程中，所述接收模块具体用于：接收所述代理设备发送的会话参数，所述会话参数为所述代理设备接收的所述CS核心网网元发送的寻呼消息中携带；
所述处理模块具体用于：根据所述会话参数寻呼到所述UE；
所述发送模块具体用于：向所述代理设备返回寻呼响应；
所述接收模块具体用于：接收所述代理设备发送的承载建立请求；
所述处理模块具体用于：根据所述承载建立请求建立所述UE与所述代理设备之间的VoLTE承载；
所述发送模块具体用于：向所述代理设备返回承载建立响应。
基于同一发明构思，本发明实施例还提供另一种MME，该MME的具体实施可参见上述关于MME的描述，重复之处不再赘述，如图13所示，该MME主要包括处理器1301和通信接口1302，处理器1301通过通信接口1302 接收代理设备发送的VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；并通过通信接口1302向代理设备发送用户设备UE的VoLTE承载相关信令。MME的具体实施可参见上述各通信过程中关于MME的描述，此处不再赘述。其中处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
基于同一发明构思，本发明实施例提供的eNB的结构如图14所示，主要包括接收模块1401和发送模块1402，具体地：
接收模块1401，用于接收所述代理设备发送的基于长期演进LTE的语音VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；
发送模块1402，用于向代理设备发送用户设备UE的VoLTE承载相关信令。
该实施例中eNB的具体实施可参见上述各通信过程中关于eNB的描述，重复之处不再赘述。
基于同一发明构思，本发明实施例还提供了另一种eNB，该eNB的具体实施可参见上述关于eNB的描述，重复之处不再赘述，如图15所示，该eNB主要包括处理器1501和收发机1502，处理器1501通过收发机1502接收代理设备发送的VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对CS核心网网元的CS语音承载相关信令转换获得；通过收发机1502向代理设备发送UE的VoLTE承载相关信令。
eNB的具体实施可参见上述各通信过程中关于MME的描述，此处不再赘述。其中处理器可以是通用处理器、数字信号处理器、专用集成电路、现 场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
基于以上***架构，本发明实施例中，如图16所示，通过代理设备实现VoLTE业务的具体过程如下：
步骤1601：代理设备获取基站eNB或移动性管理实体MME的基于长期演进LTE的语音VoLTE承载相关信令，将获得的VoLTE承载相关信令转换为电路交换域CS核心网网元能够处理的CS语音承载相关信令，并将转换得到的所述CS语音承载相关信令发送给所述CS核心网网元；
步骤1602：所述代理设备获取所述CS核心网网元的CS语音承载相关信令，将获取的所述CS语音承载相关信令转换为VoLTE承载相关信令，并将转换得到的VoLTE承载相关信令发送给所述eNB或所述MME。
该实施例中，通过代理设备实现VoLTE业务过程中各通信过程的具体实施可参见上述***部分的相关描述，重复之处不再赘述。
在鉴权过程中，所述代理设备接收所述CS核心网网元的鉴权请求，所述鉴权请求中至少携带鉴权参数，将所述鉴权请求中的鉴权参数发送给所述MME；
所述代理设备接收所述MME发送的由用户设备UE根据所述鉴权参数返回的鉴权响应，将所述鉴权响应转换为所述CS核心网网元能够处理的鉴权响应，向所述CS核心网网元发送所述CS核心网网元能够处理的鉴权响应。
在SIP注册过程中，所述代理设备接收所述eNB转发的用户设备UE的会话发起协议SIP注册请求信令，所述SIP注册请求信令中携带所述UE的标识信息，根据所述SIP注册请求信令中携带的所述UE的标识信息生成位置更新请求，将所述位置更新请求发送给所述CS核心网网元；
所述代理设备接收所述CS核心网网元根据所述位置更新请求返回的位 置更新接受消息，所述位置更新接受消息用于指示接受所述UE的SIP注册请求，并根据所述位置更新接受消息获得SIP注册完成信令，向所述eNB发送所述SIP注册完成信令。
在主叫流程中，所述代理设备接收用户设备UE的创建会话的SIP请求消息，所述创建会话的SIP请求消息中携带会话参数，将所述创建会话的SIP请求消息转换为所述CS核心网网元能够处理的连接管理请求相关信令，将所述连接管理请求相关信令发送给所述CS核心网网元；
所述代理设备接收所述CS核心网网元根据所述连接管理请求相关信令返回的无线接入承载RAB分配请求消息，根据所述RAB分配请求消息建立语音承载，并根据所述RAB分配请求消息生成承载建立请求，将所述承载建立请求发送给所述MME；
所述代理设备接收所述MME在根据所述承载建立请求为所述代理设备建立与所述UE之间的VoLTE承载后返回的承载建立应答，并根据所述承载建立应答获得所述CS核心网网元能够处理的对应所述RAB分配请求消息的RAB分配响应消息，向所述CS核心网网元发送对应所述RAB分配请求消息的RAB分配响应消息；
所述代理设备接收所述CS核心网网元返回的连接消息，根据所述连接消息获得指示会话连接建立完成的SIP信令，通过所述eNB向所述UE发送所述指示会话连接建立完成的SIP信令，并接收所述eNB转发的所述UE对应所述指示会话连接建立完成的SIP信令返回的响应信令，根据所述指示会话连接建立完成的SIP信令的响应信令获得所述CS核心网网元能够处理的所述连接消息的响应消息，向所述CS核心网网元返回所述连接消息的响应消息。
主叫流程中，所述代理设备向所述CS核心网网元发送对应所述RAB分配请求消息的RAB分配响应消息后，接收所述CS核心网网元发送的振铃消息，将所述振铃消息转换为指示被叫向主叫播放回铃音的SIP信令，将所述指示被叫向主叫播放回铃音的SIP信令通过所述eNB发送给所述UE。
主叫流程中，所述代理设备将所述连接管理请求相关信令发送给所述CS 核心网网元后，接收所述CS核心网网元返回的当前呼叫正在处理的消息，将所述当前呼叫正在处理的消息转换为指示会话进度的SIP消息，将所述指示会话进度的SIP消息通过所述eNB发送给所述UE。
被叫流程中，所述代理设备接收所述CS核心网网元发送的寻呼消息，所述寻呼消息中携带会话参数，获取所述寻呼消息中携带的所述会话参数，将所述会话参数发送给所述MME，接收所述MME根据所述会话参数寻呼到所述UE后返回的寻呼响应，将所述MME返回的寻呼响应转换为所述CS核心网网元能够处理的寻呼响应，向所述CS核心网网元发送所述CS核心网网元能够处理的寻呼响应；
所述代理设备接收所述CS核心网网元发送的语音呼叫建立请求，根据所述语音呼叫建立请求获得创建会话的SIP请求消息，通过所述eNB向所述UE发送所述创建会话的SIP请求消息，在接收到所述eNB转发的所述UE返回的针对所述创建会话的SIP请求消息的确认消息后，将针对所述创建会话的SIP请求消息的确认消息转换为所述CS核心网网元能够处理的语音呼叫确认消息，向所述CS核心网网元发送所述语音呼叫确认消息；
所述代理设备接收所述CS核心网网元发送的无线接入承载RAB分配请求，根据所述RAB分配请求建立语音承载获得承载建立请求，并向所述MME发送所述承载建立请求，接收所述MME在根据所述承载建立请求建立所述UE与所述代理设备之间的VoLTE承载之后返回的承载建立响应，根据所述承载建立响应获得所述CS核心网网元能够处理的对应所述RAB分配请求的RAB分配响应，向所述CS核心网网元发送对应所述RAB分配请求的RAB分配响应；
所述代理设备接收所述eNB转发的所述UE的连接确认消息后，将所述连接确认消息转换为所述CS核心网网元能够处理的连接消息，向所述CS核心网网元发送所述连接消息，接收所述CS核心网网元发送的对应所述连接消息的响应消息后，将所述连接消息的响应消息转换为指示连接确认的SIP信令，将所述指示连接确认的SIP信令通过所述eNB发送给所述UE。
被叫流程中，所述代理设备向所述CS核心网网元发送对应所述RAB分配请求的RAB分配响应后，接收所述eNB转发的所述UE的指示被叫向主叫播放回铃音的SIP信令，将所述指示被叫向主叫播放回铃音的SIP信令转换为所述CS核心网网元能够处理的振铃消息，将所述振铃消息发送给所述CS核心网网元。
基于以上***架构，本发明实施例中，如图17所示，通过MME实现VoLTE业务的具体过程如下：
步骤1701：MME接收代理设备发送的基于长期演进LTE的语音VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；
步骤1702：MME向所述代理设备发送用户设备UE的VoLTE承载相关信令。
该实施例中，通过MME实现VoLTE业务过程中各通信过程的具体实施可参见上述***部分的相关描述，重复之处不再赘述。
基于以上***架构，本发明实施例中，如图18所示，通过eNB实现VoLTE业务的具体过程如下：
步骤1801：eNB接收代理设备发送的基于长期演进LTE的语音VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；
步骤1802：eNB向代理设备发送用户设备UE的VoLTE承载相关信令。
该实施例中，通过eNB实现VoLTE业务过程中各通信过程的具体实施可参见上述***部分的相关描述，重复之处不再赘述。
本领域内的技术人员应明白，本发明的实施例可提供为方法、***、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (28)

  1. 一种代理设备，其特征在于，所述代理设备分别与电路交换域CS核心网网元，基站eNB以及移动性管理实体MME相连接，所述代理设备包括通信模块和处理模块；
    所述通信模块，用于获取所述eNB或所述MME的基于长期演进LTE的语音VoLTE承载相关信令；
    所述处理模块，用于将所述通信模块获得的所述VoLTE承载相关信令转换为所述CS核心网网元能够处理的CS语音承载相关信令；
    所述通信模块，用于将所述处理模块转换得到的所述CS语音承载相关信令发送给所述CS核心网网元；或者，
    所述通信模块，用于获取所述CS核心网网元的CS语音承载相关信令；
    所述处理模块，用于将所述通信模块获取的所述CS语音承载相关信令转换为基于长期演进LTE的语音VoLTE承载相关信令；
    所述通信模块，用于将所述处理模块转换得到的所述VoLTE承载相关信令发送给所述eNB或所述MME。
  2. 如权利要求1所述的代理设备，其特征在于，
    所述通信模块还用于：
    接收所述CS核心网网元的鉴权请求，所述鉴权请求中至少携带鉴权参数；
    所述处理模块，还用于：
    获取所述通信模块接收的所述鉴权请求中的鉴权参数；
    所述通信模块，还用于：
    将所述处理模块获取的所述鉴权参数发送给所述MME；
    所述通信模块，还用于：
    接收所述MME发送的由用户设备UE根据所述鉴权参数返回的鉴权响应；
    所述处理模块，还用于：
    将所述通信模块接收的所述鉴权响应转换为所述CS核心网网元能够处理的鉴权响应；
    所述通信模块，还用于：
    将所述处理模块转换获得的所述CS核心网网元能够处理的鉴权响应发送给所述CS核心网网元。
  3. 如权利要求1所述的代理设备，其特征在于，
    所述通信模块，还用于：
    接收所述eNB转发的用户设备UE的会话发起协议SIP注册请求信令，所述SIP注册请求信令中携带所述UE的标识信息；
    所述处理模块，还用于：
    根据所述通信模块接收的所述SIP注册请求信令中携带的所述UE的标识信息生成位置更新请求；
    所述通信模块，还用于：
    将所述处理模块生成的所述位置更新请求发送给所述CS核心网网元，以及接收所述CS核心网网元根据所述位置更新请求返回的位置更新接受消息，所述位置更新接受消息用于指示接受所述UE的SIP注册请求；
    所述处理模块，还用于：
    根据所述通信模块接收的所述位置更新接受消息获得SIP注册完成信令；
    所述通信模块，还用于：
    向所述eNB发送所述处理模块获得的所述SIP注册完成信令。
  4. 如权利要求1-3任一项所述的代理设备，其特征在于，
    所述通信模块，具体用于：
    接收所述eNB转发的用户设备UE的创建会话的SIP请求消息，所述创建会话的SIP请求消息中携带会话参数；
    所述处理模块，具体用于：
    将所述通信模块接收的所述创建会话的SIP请求消息转换为所述CS核心 网网元能够处理的连接管理请求相关信令；
    所述通信模块，具体用于：
    将所述处理模块转换得到的所述连接管理请求相关信令发送给所述CS核心网网元，以及接收所述CS核心网网元根据所述连接管理请求相关信令返回的无线接入承载RAB分配请求消息；
    所述处理模块，具体用于：
    根据所述通信模块接收的所述RAB分配请求消息建立语音承载，并根据所述RAB分配请求消息生成承载建立请求；
    所述通信模块，具体用于：
    将所述处理模块生成的所述承载建立请求发送给所述MME，以及接收所述MME在根据所述承载建立请求为所述代理设备建立与所述UE之间的VoLTE承载后返回的承载建立应答；
    所述处理模块，具体用于：
    根据所述承载建立应答获得所述CS核心网网元能够处理的对应所述RAB分配请求消息的RAB分配响应消息；
    所述通信模块，具体用于：
    向所述CS核心网网元发送所述处理模块获得的对应所述RAB分配请求消息的RAB分配响应消息，以及接收所述CS核心网网元返回的连接消息；
    所述处理模块，具体用于：
    根据所述通信模块接收的所述连接消息获得指示会话连接建立完成的SIP信令；
    所述通信模块，具体用于：
    通过所述eNB向所述UE发送所述处理模块获得的所述指示会话连接建立完成的SIP信令，并接收所述eNB转发的所述UE对应所述指示会话连接建立完成的SIP信令返回的响应信令；
    所述处理模块，具体用于：
    根据所述通信模块接收的对应所述指示会话连接建立完成的SIP信令的 响应信令获得所述CS核心网网元能够处理的所述连接消息的响应消息；
    所述通信模块，具体用于：
    向所述CS核心网网元返回所述处理模块获得的所述连接消息的响应消息。
  5. 如权利要求4所述的代理设备，其特征在于，
    所述通信模块，还用于：
    向所述CS核心网网元发送对应所述RAB分配请求消息的RAB分配响应消息后，接收所述CS核心网网元发送的振铃消息；
    所述处理模块，还用于：
    将所述通信模块接收的所述振铃消息转换为指示被叫向主叫播放回铃音的SIP信令；
    所述通信模块，还用于：
    将所述处理模块转换获得的所述指示被叫向主叫播放回铃音的SIP信令通过所述eNB发送给所述UE。
  6. 如权利要求4所述的代理设备，其特征在于，
    所述通信模块，还用于：
    将所述连接管理请求相关信令发送给所述CS核心网网元后，接收所述CS核心网网元返回的当前呼叫正在处理的消息；
    所述处理模块，还用于：
    将所述通信模块接收的所述当前呼叫正在处理的消息转换为指示会话进度的SIP消息；
    所述通信模块，还用于：
    将所述处理模块转换获得的所述指示会话进度的SIP消息通过所述eNB发送给所述UE。
  7. 如权利要求1-3任一项所述的代理设备，其特征在于，
    所述通信模块，具体用于：
    接收所述CS核心网网元发送的寻呼消息，所述寻呼消息中携带会话参 数；
    所述处理模块，具体用于：
    获取所述通信模块接收的所述寻呼消息中携带的所述会话参数；
    所述通信模块，具体用于：
    将所述处理模块获取的所述会话参数发送给所述MME，接收所述MME根据所述会话参数寻呼到所述UE后返回的寻呼响应；
    所述处理模块，具体用于：
    将所述通信模块接收的所述MME返回的寻呼响应转换为所述CS核心网网元能够处理的寻呼响应；
    所述通信模块，具体用于：
    将所述处理模块转换获得的所述CS核心网网元能够处理的寻呼响应发送给所述CS核心网网元，接收所述CS核心网网元发送的语音呼叫建立请求；
    所述处理模块，具体用于：
    根据所述通信模块接收的所述语音呼叫建立请求获得创建会话的SIP请求消息；
    所述通信模块，具体用于：
    通过所述eNB向所述UE发送所述处理模块获得的所述创建会话的SIP请求消息，接收所述eNB转发的所述UE返回的针对所述创建会话的SIP请求消息的确认消息；
    所述处理模块，具体用于：
    将所述通信模块接收的针对所述创建会话的SIP请求消息的确认消息转换为所述CS核心网网元能够处理的语音呼叫确认消息；
    所述通信模块，具体用于：
    向所述CS核心网网元发送所述处理模块转换获得的所述语音呼叫确认消息，以及接收所述CS核心网网元发送的无线接入承载RAB分配请求；
    所述处理模块，具体用于：
    根据所述通信模块接收的所述RAB分配请求建立语音承载获得承载建立 请求；
    所述通信模块，具体用于：
    向所述MME发送所述处理模块转换获得的所述承载建立请求，接收所述MME在根据所述承载建立请求建立所述UE与所述代理设备之间的VoLTE承载之后返回的承载建立响应；
    所述处理模块，具体用于：
    根据所述通信模块接收的所述承载建立响应获得所述CS核心网网元能够处理的对应所述RAB分配请求的RAB分配响应；
    所述通信模块，具体用于：
    向所述CS核心网网元发送所述处理模块获得的对应所述RAB分配请求的RAB分配响应，以及接收所述eNB转发的所述UE的连接确认消息；
    所述处理模块，具体用于：
    将所述通信模块接收的所述连接确认消息转换为所述CS核心网网元能够处理的连接消息；
    所述通信模块，具体用于：
    向所述CS核心网网元发送所述处理模块转换获得的所述连接消息，接收所述CS核心网网元发送的对应所述连接消息的响应消息；
    所述处理模块，具体用于：
    将所述通信模块接收的所述连接消息的响应消息转换为指示连接确认的SIP信令；
    所述通信模块，具体用于：
    将所述处理模块转换获得的所述指示连接确认的SIP信令通过所述eNB发送给所述UE。
  8. 如权利要求7所述的代理设备，其特征在于，
    所述通信模块，还用于：
    向所述CS核心网网元发送对应所述RAB分配请求的RAB分配响应后，接收所述eNB转发的所述UE的指示被叫向主叫播放回铃音的SIP信令；
    所述处理模块，还用于：
    将所述通信模块接收的所述指示被叫向主叫播放回铃音的SIP信令转换为所述CS核心网网元能够处理的振铃消息；
    所述通信模块，还用于：
    将所述处理模块转换获得的所述振铃消息发送给所述CS核心网网元。
  9. 如权利要求1所述的代理设备，其特征在于，所述代理设备集成在无线网络控制器RNC或服务网关SGW中。
  10. 一种移动性管理实体MME，其特征在于，包括：
    接收模块，用于接收代理设备发送的基于长期演进LTE的语音VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；
    发送模块，用于向所述代理设备发送用户设备UE的VoLTE承载相关信令。
  11. 如权利要求10所述的MME，其特征在于，还包括处理模块；
    所述接收模块具体用于：
    接收所述代理设备发送的所述鉴权参数；
    所述处理模块具体用于：
    生成携带所述鉴权参数的非接入层NAS消息；
    所述发送模块具体用于：
    将携带所述鉴权参数的NAS消息发送给所述UE。
  12. 如权利要求11所述的MME，其特征在于，所述接收模块具体用于：
    接收所述代理设备发送的承载建立请求；
    所述处理模块具体用于：
    根据所述承载建立请求为所述代理设备建立与所述UE之间的VoLTE承载；
    所述发送模块具体用于：
    向所述代理设备返回承载建立应答。
  13. 如权利要求11所述的MME，其特征在于，所述接收模块具体用于：接收所述代理设备发送的会话参数，所述会话参数为所述代理设备接收的所述CS核心网网元发送的寻呼消息中携带；
    所述处理模块具体用于：根据所述会话参数寻呼到所述UE；
    所述发送模块具体用于：向所述代理设备返回寻呼响应；
    所述接收模块具体用于：接收所述代理设备发送的承载建立请求；
    所述处理模块具体用于：根据所述承载建立请求建立所述UE与所述代理设备之间的VoLTE承载；
    所述发送模块具体用于：向所述代理设备返回承载建立响应。
  14. 一种基站eNB，其特征在于，包括：
    接收模块，用于接收代理设备发送的基于长期演进LTE的语音VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；
    发送模块，用于向代理设备发送用户设备UE的VoLTE承载相关信令。
  15. 一种VoLTE业务实现***，其特征在于，包括如权利要求14所述的基站eNB、如权利要求10-13任一所述的移动性管理实体MME、如权利要求1-9任一所述的代理设备以及电路交换域CS核心网网元；
    所述代理设备分别连接所述eNB、所述MME和所述CS核心网网元；
    所述代理设备用于将所述eNB或所述MME的基于LTE的语音VoLTE承载相关信令转换为所述CS核心网网元能够处理的CS语音承载相关信令，并将所述CS语音承载相关信令发送给所述CS核心网网元；以及用于将所述CS核心网网元的CS语音承载相关信令转换为VoLTE承载相关信令，并发送给所述eNB或所述MME。
  16. 一种VoLTE业务实现方法，其特征在于，包括：
    代理设备获取基站eNB或移动性管理实体MME的基于长期演进LTE的语音VoLTE承载相关信令，将获得的VoLTE承载相关信令转换为电路交换域CS核心网网元能够处理的CS语音承载相关信令，并将转换得到的所述CS 语音承载相关信令发送给所述CS核心网网元；
    所述代理设备获取所述CS核心网网元的CS语音承载相关信令，将获取的所述CS语音承载相关信令转换为VoLTE承载相关信令，并将转换得到的VoLTE承载相关信令发送给所述eNB或所述MME。
  17. 如权利要求16所述的方法，其特征在于，所述方法还包括：
    所述代理设备接收所述CS核心网网元的鉴权请求，所述鉴权请求中至少携带鉴权参数，将所述鉴权请求中的鉴权参数发送给所述MME；
    所述代理设备接收所述MME发送的由用户设备UE根据所述鉴权参数返回的鉴权响应，将所述鉴权响应转换为所述CS核心网网元能够处理的鉴权响应，向所述CS核心网网元发送所述CS核心网网元能够处理的鉴权响应。
  18. 如权利要求16所述的方法，其特征在于，所述方法还包括：
    所述代理设备接收所述eNB转发的用户设备UE的会话发起协议SIP注册请求信令，所述SIP注册请求信令中携带所述UE的标识信息，根据所述SIP注册请求信令中携带的所述UE的标识信息生成位置更新请求，将所述位置更新请求发送给所述CS核心网网元；
    所述代理设备接收所述CS核心网网元根据所述位置更新请求返回的位置更新接受消息，所述位置更新接受消息用于指示接受所述UE的SIP注册请求，并根据所述位置更新接受消息获得SIP注册完成信令，向所述eNB发送所述SIP注册完成信令。
  19. 如权利要求16-18任一项所述的方法，其特征在于，主叫流程中，所述方法具体包括：
    所述代理设备接收用户设备UE的创建会话的SIP请求消息，所述创建会话的SIP请求消息中携带会话参数，将所述创建会话的SIP请求消息转换为所述CS核心网网元能够处理的连接管理请求相关信令，将所述连接管理请求相关信令发送给所述CS核心网网元；
    所述代理设备接收所述CS核心网网元根据所述连接管理请求相关信令返回的无线接入承载RAB分配请求消息，根据所述RAB分配请求消息建立 语音承载，并根据所述RAB分配请求消息生成承载建立请求，将所述承载建立请求发送给所述MME；
    所述代理设备接收所述MME在根据所述承载建立请求为所述代理设备建立与所述UE之间的VoLTE承载后返回的承载建立应答，并根据所述承载建立应答获得所述CS核心网网元能够处理的对应所述RAB分配请求消息的RAB分配响应消息，向所述CS核心网网元发送对应所述RAB分配请求消息的RAB分配响应消息；
    所述代理设备接收所述CS核心网网元返回的连接消息，根据所述连接消息获得指示会话连接建立完成的SIP信令，通过所述eNB向所述UE发送所述指示会话连接建立完成的SIP信令，并接收所述eNB转发的所述UE对应所述指示会话连接建立完成的SIP信令返回的响应信令，根据所述指示会话连接建立完成的SIP信令的响应信令获得所述CS核心网网元能够处理的所述连接消息的响应消息，向所述CS核心网网元返回所述连接消息的响应消息。
  20. 如权利要求19所述的方法，其特征在于，
    所述代理设备向所述CS核心网网元发送对应所述RAB分配请求消息的RAB分配响应消息后，接收所述CS核心网网元发送的振铃消息，将所述振铃消息转换为指示被叫向主叫播放回铃音的SIP信令，将所述指示被叫向主叫播放回铃音的SIP信令通过所述eNB发送给所述UE。
  21. 如权利要求19所述的方法，其特征在于，
    所述代理设备将所述连接管理请求相关信令发送给所述CS核心网网元后，接收所述CS核心网网元返回的当前呼叫正在处理的消息，将所述当前呼叫正在处理的消息转换为指示会话进度的SIP消息，将所述指示会话进度的SIP消息通过所述eNB发送给所述UE。
  22. 如权利要求16-18任一项所述的方法，其特征在于，被叫流程中，所述方法具体包括：
    所述代理设备接收所述CS核心网网元发送的寻呼消息，所述寻呼消息中携带会话参数，获取所述寻呼消息中携带的所述会话参数，将所述会话参数 发送给所述MME，接收所述MME根据所述会话参数寻呼到所述UE后返回的寻呼响应，将所述MME返回的寻呼响应转换为所述CS核心网网元能够处理的寻呼响应，向所述CS核心网网元发送所述CS核心网网元能够处理的寻呼响应；
    所述代理设备接收所述CS核心网网元发送的语音呼叫建立请求，根据所述语音呼叫建立请求获得创建会话的SIP请求消息，通过所述eNB向所述UE发送所述创建会话的SIP请求消息，在接收到所述eNB转发的所述UE返回的针对所述创建会话的SIP请求消息的确认消息后，将针对所述创建会话的SIP请求消息的确认消息转换为所述CS核心网网元能够处理的语音呼叫确认消息，向所述CS核心网网元发送所述语音呼叫确认消息；
    所述代理设备接收所述CS核心网网元发送的无线接入承载RAB分配请求，根据所述RAB分配请求建立语音承载获得承载建立请求，并向所述MME发送所述承载建立请求，接收所述MME在根据所述承载建立请求建立所述UE与所述代理设备之间的VoLTE承载之后返回的承载建立响应，根据所述承载建立响应获得所述CS核心网网元能够处理的对应所述RAB分配请求的RAB分配响应，向所述CS核心网网元发送对应所述RAB分配请求的RAB分配响应；
    所述代理设备接收所述eNB转发的所述UE的连接确认消息后，将所述连接确认消息转换为所述CS核心网网元能够处理的连接消息，向所述CS核心网网元发送所述连接消息，接收所述CS核心网网元发送的对应所述连接消息的响应消息后，将所述连接消息的响应消息转换为指示连接确认的SIP信令，将所述指示连接确认的SIP信令通过所述eNB发送给所述UE。
  23. 如权利要求22所述的方法，其特征在于，
    所述代理设备向所述CS核心网网元发送对应所述RAB分配请求的RAB分配响应后，接收所述eNB转发的所述UE的指示被叫向主叫播放回铃音的SIP信令，将所述指示被叫向主叫播放回铃音的SIP信令转换为所述CS核心网网元能够处理的振铃消息，将所述振铃消息发送给所述CS核心网网元。
  24. 一种VoLTE业务实现方法，其特征在于，包括：
    移动性管理实体MME接收代理设备发送的基于长期演进LTE的语音VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；
    所述MME向所述代理设备发送用户设备UE的VoLTE承载相关信令。
  25. 如权利要求24所述的方法，其特征在于，所述方法还包括：
    所述MME接收所述代理设备发送的所述鉴权参数；
    所述MME生成携带所述鉴权参数的非接入层NAS消息；
    所述MME将携带所述鉴权参数的NAS消息发送给所述UE。
  26. 如权利要求25所述的方法，其特征在于，所述方法还包括：
    所述MME接收所述代理设备发送的承载建立请求；
    所述MME根据所述承载建立请求为所述代理设备建立与所述UE之间的VoLTE承载；
    所述MME向所述代理设备返回承载建立应答。
  27. 如权利要求25所述的方法，其特征在于，被叫流程中所述方法具体包括：
    所述MME接收所述代理设备发送的会话参数，所述会话参数为所述代理设备接收的所述CS核心网网元发送的寻呼消息中携带；
    所述MME根据所述会话参数寻呼到所述UE后，向所述代理设备返回寻呼响应，接收所述代理设备发送的承载建立请求；
    所述MME根据所述承载建立请求建立所述UE与所述代理设备之间的VoLTE承载，向所述代理设备返回承载建立响应。
  28. 一种VoLTE业务实现方法，其特征在于，包括：
    基站eNB接收代理设备发送的基于长期演进LTE的语音VoLTE承载相关信令，所述VoLTE承载相关信令为所述代理设备对电路交换域CS核心网网元的CS语音承载相关信令转换获得；
    所述eNB向代理设备发送用户设备UE的VoLTE承载相关信令。
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