CN107251609A - A kind of VoLTE service implementation methods, system and equipment - Google Patents

Abstract

The invention discloses a kind of VoLTE service implementation methods, system and equipment, to overcome in existing VoLTE business realizings scheme, the problem of due to needing deployment IMS systematic influences VoLTE deployment progress.Agent equipment is set in the lte networks, and the agent equipment is connected with circuit commutative field CS core network elements, base station eNB and mobility management entity MME respectively, the agent equipment includes communication module and processing module；VoLTE is carried related signaling and is converted to CS voice bearers related signaling that circuit commutative field CS core network elements can handle and is sent to the CS core network elements by the processing module；Or, CS voice bearer related signalings are converted into VoLTE carrying related signalings and the eNB or described MME are sent to.

Description

A kind of VoLTE service implementation method, system and equipment Technical field

The present invention relates to field of communication technology more particularly to a kind of VoLTE service implementation methods, system and equipment.

Background technique

The second generation (2^ndGeneration, 2G) in mobile communications network and the third generation (3^rdGeneration, 3G) in mobile communications network, base station core network access circuit domain and packet domain simultaneously, as shown in Figure 1.Voice service is routed to called number by core net circuit domain analyzing called number by base station core network access circuit domain by voice service.For Internet protocol (Internet Protocol, IP) data service, IP data service channel is established by core network packet-domain, which is accessed into corresponding IP data service net, such as internet or private network.In addition, short message service, speech-sound intelligent network service are responsible for dredging by core net circuit domain in 2G/3G network.

Forth generation (4^thGeneration, 4G) in mobile communications network, evolved base station (evolved NodeB, eNB Evolved Packet Core (Evolved Packet Core) is only accessed, EPC), as shown in Figure 2, EPC includes gateway (Serving Gateway,) and packet data gateway (Packet Date Network Gateway SGW, PGW), it may further include mobility management entity (Mobility Management Entity, MME).Compared to 2G/3G network, 4G network only has packet-switched domain (Packet Switch Domain, abbreviation ps domain), without circuit commutative field (domain Circuit Switched Domain, abbreviation CS).

Voice (Voice over LTE, abbreviation VoLTE based on LTE；LTE, full name Long Term Evolution, long term evolution), it is that voice service is carried on to 4G network.Based on the VoLTE implementation of IP multimedia subsystem, IMS (IP Multimedia Subsystem, IMS), 4G core net can be cooperated to realize the voice service based on ps domain.Voice service accesses IMS by the IP data channel in EPC and by call proceeding to called subscriber, and is responsible for voice service control by IMS by IMS analyzing called number.

VoLTE based on IMS, the implementation completely new as one need to dispose IMS system, but due to IMS system complex, the deployment of IMS system is related to multiple network elements and interface, so that the deployment of IMS system affects the deployment progress of VoLTE.

Summary of the invention

The embodiment of the present invention provides a kind of VoLTE service implementation method, system and equipment, to overcome in existing VoLTE business realizing scheme, the problem of deployment progress due to needing to dispose IMS systematic influence VoLTE.

Specific technical solution provided in an embodiment of the present invention is as follows:

In a first aspect, providing a kind of agent equipment, the agent equipment is connected with circuit commutative field CS core network element, base station eNB and mobility management entity MME respectively, and the agent equipment includes communication module and processing module；

The communication module, the voice VoLTE based on long term evolution LTE for obtaining the eNB or MME carry related signaling；

The processing module, the VoLTE carrying related signaling for obtaining the communication module are converted to the CS voice bearer related signaling that the CS core network element is capable of handling；

The communication module, the CS voice bearer related signaling for the processing module to be converted to are sent to the CS core network element；Alternatively,

The communication module, for obtaining the CS voice bearer related signaling of the CS core network element；

The processing module, the CS voice bearer related signaling for obtaining the communication module are converted to the carrying related signaling of the voice VoLTE based on long term evolution LTE；

The communication module, the VoLTE carrying related signaling for the processing module to be converted to are sent to the eNB or MME.

With reference to first aspect, in the first possible implementation, the communication module is also used to:

The authentication request of the CS core network element is received, at least carries authentication parameter in the authentication request；

The processing module, is also used to:

Obtain the authentication parameter in the received authentication request of the communication module；

The communication module, is also used to:

The authentication parameter that the processing module is obtained is sent to the MME；

The communication module, is also used to:

Receive the Authentication Response returned by user equipment (UE) according to the authentication parameter that the MME is sent；

The processing module, is also used to:

The received Authentication Response of the communication module is converted into the Authentication Response that the CS core network element is capable of handling；

The communication module, is also used to:

The Authentication Response that the CS core network element that processing module conversion obtains is capable of handling is sent to the CS core network element.

With reference to first aspect, in the second possible implementation, the communication module, is also used to:

The Session initiation Protocol SIP registration demand signalling of the user equipment (UE) of the eNB forwarding is received, the identification information of the UE is carried in the SIP registration demand signalling；

The processing module, is also used to:

Position updating request is generated according to the identification information of the UE carried in the received SIP registration demand signalling of the communication module；

The communication module, is also used to:

The position updating request that the processing module is generated is sent to the CS core network element, and the location updating received message that the CS core network element is returned according to the position updating request is received, the location updating received message is used to indicate the SIP registration request for receiving the UE；

The processing module, is also used to:

SIP registration, which is obtained, according to the received location updating received message of the communication module completes signaling；

The communication module, is also used to:

The SIP registration that the processing module obtains, which is sent, to the eNB completes signaling.

Any one into second of possible implementation with reference to first aspect, it is possible at the third In implementation, the communication module is specifically used for:

The sip request message of the creation session of the user equipment (UE) of the eNB forwarding is received, carries session parameter in the sip request message of the creation session；

The processing module, is specifically used for:

The sip request message of the received creation session of the communication module is converted into the connection management that the CS core network element is capable of handling and requests related signaling；

The communication module, is specifically used for:

The connection management request related signaling that the processing module is converted to is sent to the CS core network element, and receives the radio access bearer RAB allocation request message that the CS core network element requests related signaling to return according to the connection management；

The processing module, is specifically used for:

Voice bearer is established according to the received RAB allocation request message of the communication module, and carrying is generated according to the RAB allocation request message and establishes request；

The communication module, is specifically used for:

Request is established into the carrying that the processing module generates and is sent to the MME, and receives the carrying that the MME is returned after establishing request according to the carrying and being the VoLTE carrying that the agent equipment is established between the UE and establishes response；

The processing module, is specifically used for:

The RAB assignment response message that response obtains the correspondence RAB allocation request message that the CS core network element is capable of handling is established according to the carrying；

The communication module, is specifically used for:

The RAB assignment response message for the correspondence RAB allocation request message that the processing module obtains is sent to the CS core network element, and receives the connection message that the CS core network element returns；

The processing module, is specifically used for:

Instruction session connection, which is obtained, according to the received connection message of the communication module establishes the SIP signaling completed；

The communication module, is specifically used for:

The UE for sending the instruction session connection that the processing module obtains to the UE by the eNB and establishing the SIP signaling completed, and receive the eNB forwarding corresponds to the instruction session connection and establishes the response signaling that the SIP signaling completed returns；

The processing module, is specifically used for:

The response message for the connection message that the CS core network element is capable of handling is obtained according to the response signaling that the SIP signaling completed is established in the instruction session connection of the communication module received correspondence；

The communication module, is specifically used for:

The response message for the connection message that the processing module obtains is returned to the CS core network element.

The third possible implementation with reference to first aspect, in the fourth possible implementation,

The communication module, is also used to:

After the RAB assignment response message for sending the corresponding RAB allocation request message to the CS core network element, the ALERTING message that the CS core network element is sent is received；

The processing module, is also used to:

The received ALERTING message of the communication module is converted to the SIP signaling of instruction called party to calling party playing RBT；

The communication module, is also used to:

The SIP signaling for the instruction called party to calling party playing RBT that processing module conversion obtains is sent to the UE by the eNB.

The third possible implementation with reference to first aspect, in a fifth possible implementation,

The communication module, is also used to:

After connection management request related signaling is sent to the CS core network element, the message that the active calls that the CS core network element returns are being handled is received；

The processing module, is also used to:

The message that the received active calls of the communication module are being handled is converted to the sip message of instruction session progress；

The communication module, is also used to:

The sip message for the instruction session progress that processing module conversion obtains is sent to the UE by the eNB.

Any one into second of possible implementation with reference to first aspect, in a sixth possible implementation,

The communication module, is specifically used for:

The paging message that the CS core network element is sent is received, carries session parameter in the paging message；

The processing module, is specifically used for:

Obtain the session parameter carried in the received paging message of the communication module；

The communication module, is specifically used for:

The session parameter that the processing module is obtained is sent to the MME, receives the MME according to the page response returned after session parameter paging to the UE；

The processing module, is specifically used for:

The received MME of the communication module page response returned is converted into the page response that the CS core network element is capable of handling；

The communication module, is specifically used for:

The page response that the CS core network element that processing module conversion obtains is capable of handling is sent to the CS core network element, the audio call that the CS core network element is sent is received and establishes request；

The processing module, is specifically used for:

The sip request message that request obtains creation session is established according to the received audio call of the communication module；

The communication module, is specifically used for:

The sip request message for sending the creation session that the processing module obtains to the UE by the eNB receives the confirmation message for the sip request message for creating session that the UE of the eNB forwarding is returned；

The processing module, is specifically used for:

The confirmation message of the received sip request message for the creation session of the communication module is turned It is changed to the audio call confirmation message that the CS core network element is capable of handling；

The communication module, is specifically used for:

The audio call confirmation message that the processing module conversion obtains is sent to the CS core network element, and receives the radio access bearer RAB distribution request that the CS core network element is sent；

The processing module, is specifically used for:

Voice bearer, which is established, according to the received RAB distribution request of the communication module obtains carrying foundation request；

The communication module, is specifically used for:

The carrying that the processing module conversion obtains is sent to the MME and establishes request, is received the carrying that the MME is returned after establishing the VoLTE carrying that request is established between the UE and the agent equipment according to the carrying and is established response；

The processing module, is specifically used for:

The RAB assignment response that response obtains the correspondence RAB distribution request that the CS core network element is capable of handling is established according to the received carrying of the communication module；

The communication module, is specifically used for:

The RAB assignment response for the correspondence RAB distribution request that the processing module obtains is sent to the CS core network element, and receives the connection confirmation message of the UE of the eNB forwarding；

The processing module, is specifically used for:

The received connection confirmation message of the communication module is converted into the connection message that the CS core network element is capable of handling；

The communication module, is specifically used for:

The connection message that the processing module conversion obtains is sent to the CS core network element, receives the response message for the correspondence connection message that the CS core network element is sent；

The processing module, is specifically used for:

The response message of the received connection message of the communication module is converted to the SIP signaling of instruction connection confirmation；

The communication module, is specifically used for:

The SIP signaling for the instruction connection confirmation that processing module conversion obtains is sent to the UE by the eNB.

The 6th kind of possible implementation with reference to first aspect, in the 7th kind of possible implementation, the communication module is also used to:

After the RAB assignment response for sending the corresponding RAB distribution request to the CS core network element, the SIP signaling of the instruction called party to calling party playing RBT of the UE of the eNB forwarding is received；

The processing module, is also used to:

SIP Signalling conversion by the received instruction called party to calling party playing RBT of the communication module is the ALERTING message that the CS core network element is capable of handling；

The communication module, is also used to:

The ALERTING message that processing module conversion obtains is sent to the CS core network element.

With reference to first aspect, in the 8th kind of possible implementation, the agent equipment is integrated in radio network controller (RNC) or gateway SGW.

Second aspect provides a kind of mobility management entity MME, comprising:

Receiving module, the voice VoLTE based on long term evolution LTE sent for Receiving Agent equipment carry related signaling, and the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；

Sending module, the VoLTE for sending user equipment (UE) to the agent equipment carry related signaling.

It further include processing module in the first possible implementation in conjunction with second aspect；

The receiving module is specifically used for:

Receive the authentication parameter that the agent equipment is sent；

The processing module is specifically used for:

Generate the non access stratum NAS message for carrying the authentication parameter；

The sending module is specifically used for:

The NAS message for carrying the authentication parameter is sent to the UE.

In conjunction with the first possible implementation of second aspect, in the second possible implementation, The receiving module is specifically used for:

It receives the carrying that the agent equipment is sent and establishes request；

The processing module is specifically used for:

Establishing request according to the carrying is that the VoLTE that the agent equipment is established between the UE is carried；

The sending module is specifically used for:

Carrying, which is returned, to the agent equipment establishes response.

In conjunction with the first possible implementation of second aspect, in the third possible implementation, the receiving module is specifically used for: receiving the session parameter that the agent equipment is sent, carries in the paging message that the session parameter sends for the received CS core network element of the agent equipment；

The processing module is specifically used for: according to session parameter paging to the UE；

The sending module is specifically used for: Xiang Suoshu agent equipment returns to page response；

The receiving module is specifically used for: receiving the carrying that the agent equipment is sent and establishes request；

The processing module is specifically used for: establishing the VoLTE that request is established between the UE and the agent equipment according to the carrying and carries；

The sending module is specifically used for: Xiang Suoshu agent equipment returns to carrying and establishes response.

The third aspect provides a kind of base station eNB, comprising:

Receiving module, the voice VoLTE based on long term evolution LTE sent for Receiving Agent equipment carry related signaling, and the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；

Sending module, the VoLTE for sending user equipment (UE) to agent equipment carry related signaling.

Fourth aspect, a kind of VoLTE business realizing system is provided, including base station eNB described in the above-mentioned third aspect, any mobility management entity MME of above-mentioned second aspect, above-mentioned the first aspect any agent equipment and circuit commutative field CS core network element；

The agent equipment is separately connected the eNB, the MME and the CS core network element；

The agent equipment is used to the voice VoLTE carrying related signaling based on LTE of the eNB or MME being converted to the CS voice bearer related signaling that the CS core network element is capable of handling, and The CS voice bearer related signaling is sent to the CS core network element；And for the CS voice bearer related signaling of the CS core network element to be converted to VoLTE carrying related signaling, and it is sent to the eNB or MME.

5th aspect, provides a kind of VoLTE service implementation method, comprising:

Agent equipment obtains base station eNB or the voice VoLTE based on long term evolution LTE of mobility management entity MME carries related signaling, the VoLTE carrying related signaling of acquisition is converted into the CS voice bearer related signaling that circuit commutative field CS core network element is capable of handling, and the CS voice bearer related signaling being converted to is sent to the CS core network element；

The agent equipment obtains the CS voice bearer related signaling of the CS core network element, the CS voice bearer related signaling that will acquire is converted to VoLTE carrying related signaling, and the VoLTE being converted to carrying related signaling is sent to the eNB or MME.

In conjunction with the 5th aspect, in the first possible implementation, the method also includes:

The agent equipment receives the authentication request of the CS core network element, at least carries authentication parameter in the authentication request, and the authentication parameter in the authentication request is sent to the MME；

The agent equipment receives the Authentication Response returned by user equipment (UE) according to the authentication parameter that the MME is sent, the Authentication Response is converted into the Authentication Response that the CS core network element is capable of handling, Xiang Suoshu CS core network element sends the Authentication Response that the CS core network element is capable of handling.

In conjunction with the 5th aspect, in the second possible implementation, the method also includes:

The agent equipment receives the Session initiation Protocol SIP registration demand signalling of the user equipment (UE) of the eNB forwarding, the identification information of the UE is carried in the SIP registration demand signalling, position updating request is generated according to the identification information of the UE carried in the SIP registration demand signalling, the position updating request is sent to the CS core network element；

The agent equipment receives the location updating received message that the CS core network element is returned according to the position updating request, the location updating received message is used to indicate the SIP registration request for receiving the UE, and SIP registration is obtained according to the location updating received message and completes signaling, Xiang Suoshu eNB sends the SIP registration and completes signaling.

It is possible at the third in conjunction with any one of the 5th aspect into second of possible implementation In implementation, in calling procedure, the method is specifically included:

The agent equipment receives the sip request message of the creation session of user equipment (UE), session parameter is carried in the sip request message of the creation session, the sip request message of the creation session is converted into the connection management that the CS core network element is capable of handling and requests related signaling, connection management request related signaling is sent to the CS core network element；

The agent equipment receives the radio access bearer RAB allocation request message that the CS core network element requests related signaling to return according to the connection management, voice bearer is established according to the RAB allocation request message, and carrying is generated according to the RAB allocation request message and establishes request, request is established into the carrying and is sent to the MME；

The agent equipment receives the carrying that the MME is returned after establishing request according to the carrying and being the VoLTE carrying that the agent equipment is established between the UE and establishes response, and the RAB assignment response message that response obtains the correspondence RAB allocation request message that the CS core network element is capable of handling is established according to the carrying, Xiang Suoshu CS core network element sends the RAB assignment response message of the corresponding RAB allocation request message；

The agent equipment receives the connection message that the CS core network element returns, instruction session connection, which is obtained, according to the connection message establishes the SIP signaling completed, the instruction session connection, which is sent, to the UE by the eNB establishes the SIP signaling completed, and the UE for receiving the eNB forwarding corresponds to the instruction session connection and establishes the response signaling that the SIP signaling completed returns, the response message for the connection message that the CS core network element is capable of handling is obtained according to the response signaling that the SIP signaling completed is established in the instruction session connection, the response message of the connection message is returned to the CS core network element.

In conjunction with the third possible implementation of the 5th aspect, in the fourth possible implementation,

After the agent equipment sends the RAB assignment response message of the corresponding RAB allocation request message to the CS core network element, receive the ALERTING message that the CS core network element is sent, the SIP signaling of the instruction called party to calling party playing RBT is sent to the UE by the eNB by the SIP signaling that the ALERTING message is converted to instruction called party to calling party playing RBT.

In conjunction with the third possible implementation of the 5th aspect, in a fifth possible implementation,

Connection management request related signaling is sent to the CS core network element by the agent equipment Afterwards, the message that the active calls that the CS core network element returns are being handled is received, the message that the active calls are being handled is converted to the sip message of instruction session progress, the sip message of the instruction session progress is sent to the UE by the eNB.

In conjunction with any one of the 5th aspect into second of possible implementation, in a sixth possible implementation, in called flow, the method is specifically included:

The agent equipment receives the paging message that the CS core network element is sent, session parameter is carried in the paging message, obtain the session parameter carried in the paging message, the session parameter is sent to the MME, the MME is received according to the page response returned after session parameter paging to the UE, the MME page response returned is converted into the page response that the CS core network element is capable of handling, Xiang Suoshu CS core network element sends the page response that the CS core network element is capable of handling；

The agent equipment receives the audio call that the CS core network element is sent and establishes request, the sip request message that request obtains creation session is established according to the audio call, the sip request message of the creation session is sent to the UE by the eNB, after the confirmation message for the sip request message for the creation session that the UE for receiving the eNB forwarding is returned, the audio call confirmation message that the CS core network element is capable of handling will be converted to for the confirmation message of the sip request message of the creation session, the audio call confirmation message is sent to the CS core network element；

The agent equipment receives the radio access bearer RAB distribution request that the CS core network element is sent, voice bearer, which is established, according to the RAB distribution request obtains carrying foundation request, and the carrying is sent to the MME and establishes request, it receives the carrying that the MME is returned after establishing the VoLTE carrying that request is established between the UE and the agent equipment according to the carrying and establishes response, the RAB assignment response that response obtains the correspondence RAB distribution request that the CS core network element is capable of handling is established according to the carrying, the RAB assignment response of the corresponding RAB distribution request is sent to the CS core network element；

After the agent equipment receives the connection confirmation message of the UE of the eNB forwarding, the connection confirmation message is converted into the connection message that the CS core network element is capable of handling, the connection message is sent to the CS core network element, the correspondence connection that the CS core network element is sent is received and disappears After the response message of breath, the response message of the connection message is converted to the SIP signaling of instruction connection confirmation, the SIP signaling of the instruction connection confirmation is sent to the UE by the eNB.

In conjunction with the 5th the 6th kind of possible implementation of aspect, in the 7th kind of possible implementation,

After the agent equipment sends the RAB assignment response of the corresponding RAB distribution request to the CS core network element, receive the SIP signaling of the instruction called party to calling party playing RBT of the UE of the eNB forwarding, SIP Signalling conversion by the instruction called party to calling party playing RBT is the ALERTING message that the CS core network element is capable of handling, and the ALERTING message is sent to the CS core network element.

6th aspect, provides a kind of VoLTE service implementation method, comprising:

The voice VoLTE based on long term evolution LTE that mobility management entity MME Receiving Agent equipment is sent carries related signaling, and the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；

The MME carries related signaling to the VoLTE that the agent equipment sends user equipment (UE).

In conjunction with the 6th aspect, in the first possible implementation, the method also includes:

The MME receives the authentication parameter that the agent equipment is sent；

The MME generates the non access stratum NAS message for carrying the authentication parameter；

The NAS message for carrying the authentication parameter is sent to the UE by the MME.

In conjunction with the first possible implementation of the 6th aspect, in the second possible implementation, the method also includes:

The MME receives the carrying that the agent equipment is sent and establishes request；

It is that the VoLTE that the agent equipment is established between the UE is carried that the MME, which establishes request according to the carrying,；

The MME returns to carrying to the agent equipment and establishes response.

In conjunction with the first possible implementation of the 6th aspect, in the third possible implementation, method described in called flow is specifically included:

The MME receives the session parameter that the agent equipment is sent, and carries in the paging message that the session parameter sends for the received CS core network element of the agent equipment；

The MME is paged according to the session parameter to after the UE, and the return of Xiang Suoshu agent equipment is sought Response is exhaled, the carrying that the agent equipment is sent is received and establishes request；

The MME establishes the VoLTE that request is established between the UE and the agent equipment according to the carrying and carries, and Xiang Suoshu agent equipment returns to carrying and establishes response.

7th aspect, provides a kind of VoLTE service implementation method, comprising:

The voice VoLTE based on long term evolution LTE that base station eNB Receiving Agent equipment is sent carries related signaling, and the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；

The eNB carries related signaling to the VoLTE that agent equipment sends user equipment (UE).

Based on the above-mentioned technical proposal, in the embodiment of the present invention, by the way that agent equipment is arranged in LTE network side, realize that VoLTE carries the conversion between the CS voice bearer related signaling that related signaling and CS core network element are capable of handling by agent equipment, VoLTE is called to the domain CS for accessing traditional core net (2G or 3G), audio call is completed by the domain CS of traditional core net, realizes under the scene of no deployment IMS, completes VoLTE business using traditional core net.

Detailed description of the invention

Fig. 1 is 2G/3G schematic network structure；

Fig. 2 is 4G schematic network structure；

Fig. 3 is LTE system configuration diagram in the embodiment of the present invention；

Fig. 4 is another LTE system configuration diagram in the embodiment of the present invention；

Fig. 5 is authentication ciphering process schematic in the embodiment of the present invention；

Fig. 6 is the process schematic that UE is attached to LTE network in the embodiment of the present invention；

Fig. 7 is that UE carries out SIP registration process schematic in the embodiment of the present invention；

Fig. 8 is calling procedure schematic diagram in the embodiment of the present invention；

Fig. 9 is called flow schematic diagram in the embodiment of the present invention；

Figure 10 is agent equipment structural schematic diagram in the embodiment of the present invention；

Figure 11 is another agent equipment structural schematic diagram in the embodiment of the present invention；

Figure 12 is MME structural schematic diagram in the embodiment of the present invention；

Figure 13 is another MME structural schematic diagram in the embodiment of the present invention；

Figure 14 is eNB structural schematic diagram in the embodiment of the present invention；

Figure 15 is another eNB structural schematic diagram in the embodiment of the present invention；

Figure 16 is the method flow schematic diagram for realizing VoLTE business in the embodiment of the present invention by agent equipment；

Figure 17 is the method flow schematic diagram that MME realizes VoLTE business in the embodiment of the present invention；

Figure 18 is the method flow schematic diagram that eNB realizes VoLTE business in the embodiment of the present invention.

Specific embodiment

To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be describe below in further detail with reference to the accompanying drawings, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, all other embodiment obtained by those of ordinary skill in the art without making creative efforts, shall fall within the protection scope of the present invention.

In the embodiment of the present invention, in the network side of LTE network, agent equipment is set, Session initiation Protocol (the Session Initiation Protocol of VoLTE is realized by agent equipment, SIP) the conversion between the CS signaling that signaling and CS core network element are capable of handling, wherein, CS signaling refers to the voice signaling in traditional C/S domain, VoLTE is called to the domain CS for accessing traditional core net (2G or 3G), audio call is completed by the domain CS of traditional core net, it realizes under the scene of no deployment IMS, completes VoLTE business using traditional core net.

Specifically, in 3G network, the voice signaling in the domain CS is the voice signaling based on IuCS interface, and the voice signaling in 2G network in the domain CS is the voice signaling based on A interface.

Based on the inventive concept, in LTE system framework provided by the invention, as shown in figure 3, including at least eNB, MME, agent equipment and CS core network element；Agent equipment is connect with MME, eNB and CS core network element respectively.

Wherein, CS core network element includes mobile switching centre (Mobile Switching Center, MSC) and Media Gateway (Media Gateway, MGW), wherein MSC is for controlling CS business Surface treatment, MGW are used to carry out user's surface treatment to CS business.

Specifically, it is connected between MME and agent equipment by privately owned interface.

In the system architecture, further includes SGW and PGW, be attached between eNB, MME, SGW and PGW according to connection relationship as defined in LTE protocol.Specifically, as shown in figure 4, eNB is separately connected MME and SGW, SGW is connect with PGW, and PGW core network access, MME is connect with SGW.Specifically, eNB is connected to MME by S1-MME interface, and eNB is connected to SGW by S1-U interface.

Wherein, eNB, SGW, PGW and the Internet group at ps domain user face data stream transmission channel.MME, eNB, SGW and agent equipment form the transmission channel of control plane data flow.MME, eNB, agent equipment and CS core network element form the transmission channel of audio data stream.MME is responsible for ps domain traffic assignments to SGW, by VoLTE traffic assignments to agent equipment.

In the system architecture, MME establishes VoLTE carrying between eNB and agent equipment, and VoLTE carrying includes at least following one kind: VoLTE signaling bear, VoLTE voice bearer.MME is also used to complete the authentication process to MSC, and completes the paging to MSC.VoLTE carrying is converted to the voice bearer in the domain CS that CS core network element is capable of handling by agent equipment, wherein, the voice bearer in the domain CS includes that the relevant data of user plane bearer are sent to MGW by control plane carrying and user plane bearer, agent equipment, and control plane is carried relevant signaling and is sent to MSC.

In one specific implementation, agent equipment can be radio network controller (Radio Network Controller, RNC) or base station controller (Base Station Controller, BSC).As the gateway between the domain SIP and the domain CS, agent equipment is responsible for completing the conversion between SIP signaling and CS signaling.UE adheres to and initiates PS business in EPC according to process as defined in existing protocol.SGW and PGW does not need to establish VoLTE carrying.

In another specific implementation, agent equipment can be in the physically realization of integrated SGW function, the conversion being responsible between SIP signaling and CS signaling.

In the system architecture, agent equipment is also responsible for carrying out VoLTE carrying processing and mobility processing, and it is responsible for handling the data that IuCS interface or A interface transmit, and to agent equipment and integrate the data of the IuR interface transmission between the network entity of the agent equipment function and handle, the IuR interface For the interface between agent equipment and the core network element of 2G or 3G network.

Based on above system framework, in the embodiment of the present invention, agent equipment is mainly used for the voice VoLTE carrying related signaling based on LTE of eNB or MME being converted to the CS voice bearer related signaling that CS core network element is capable of handling, and is sent to CS core network element；And for the CS voice bearer related signaling of CS core network element to be converted to VoLTE carrying related signaling, and it is sent to eNB or MME.

In the embodiment of the present invention, CS voice bearer related signaling refers to the voice signaling that CS core network element is capable of handling.

It is illustrated below by way of realization process of multiple and different treatment processes to the VoLTE based on above system framework.

One, authentication ciphering

During authentication ciphering as described in Figure 5, the authentication request (Authentication Request) of agent equipment reception CS core network element, authentication parameter is at least carried in the authentication request, the authentication parameter in the authentication request is sent to the MME；And the Authentication Response (Authentication Response) that the user equipment (UE) that the MME is sent is returned according to the authentication parameter is received, Xiang Suoshu CS core network element returns to the Authentication Response that CS core network element is capable of handling；The MME receives the authentication parameter that the agent equipment is sent, and generates the non access stratum NAS message for carrying the authentication parameter, the NAS message for carrying the authentication parameter is sent to the UE.

Wherein, the corresponding UE of authentication request can not be present invention content of interest here by bottom signaling link determination, for details, reference can be made to the regulation in existing protocol, description that and will not be described here in detail.

Wherein, authentication parameter includes but is not limited to RAND and AUTN.

It wherein, include RES in Authentication Response.

Detailed process is as follows for authentication ciphering:

When step 501:UE is initially attached to MME, the authentication request that MME is sent is received；

Step 502:UE returns to Authentication Response to MME；

Step 501 to step 502 is to authenticate under LTE to the first time of UE, this authentication process agent equipment is not involved in.

MSC in step 503:CS core network element sends the authentication request of UE to agent equipment；

Step 504:MME sends the authentication request of UE to UE；

Step 506:UE returns to the Authentication Response to authentication request to MME；

Step 507:MME returns to the Authentication Response of the UE to agent equipment；

Step 508: the Authentication Response of the UE is converted to the Authentication Response that CS core network element is capable of handling by agent equipment, returns to the Authentication Response that the CS core network element is capable of handling to MSC；

Step 509:MSC sends safe mode command (Security Mode Commands) to agent equipment；

Step 510:RNC parses the password carried in the safe mode command to (CK, IK), by the password to MME is sent to, gets key to root key (Kasme) is calculated according to the password by MME.

Two, UE is attached to LTE network

During UE as shown in FIG. 6 is attached to LTE network, MME receives the attach request for the user equipment (UE) that the eNB is sent, the request that activation VoLTE is carried is returned to the eNB after the attach request for receiving the UE, carries VoLTE bearing parameter in the request of the activation VoLTE carrying；

ENB notifies the VoLTE bearing parameter carried in the request of the activation VoLTE carrying to the UE.

Wherein, VoLTE bearing parameter includes but is not limited to grade of service parameter (QCI), access point name (Access point Name, APN) and the destination address of VoLTE carrying, the destination address that the VoLTE is carried are the address of the agent equipment.

UE is attached to LTE network, and detailed process is as follows:

Step 601:UE sends attach request (Attach Request) to eNB；

The attach request of the UE is sent to MME by step 602:eNB；

Step 603:MME returns to the request that activation VoLTE is carried to the eNB after the attach request for receiving the UE, carries VoLTE bearing parameter in the request of activation VoLTE carrying；

Step 604:eNB sends UE capability query (UE Capability Enquiry) message to UE, carries VoLTE bearing parameter in the UE capability query message；

Step 605:UE returns to UE ability information (UE Capability Information) to eNB；

Step 606:eNB carries out RRC connection reconfiguration and sets (RRC Connection Reconfiguration；RRC, Radio Resource Control, wireless heterogeneous networks): after the attach request for receiving UE, attachment, which is sent, to UE receives (Attach Accept) message, and the request carried to the EPS that UE initiates activation default, and context request is sent to UE, with the information for notifying UE VoLTE to carry；

Step 607:UE sends RRC connection reconfiguration to eNB and sets completion (RRC Connection Reconfiguration Complete) message；

Step 608:eNB sends initialization context to MME and establishes response (Initial Context Setup Response)；

Step 609:UE sends attachment to eNB and completes (Attach Complete) message；

Step 610:eNB sends attachment to MME and completes message.

Three, SIP registration process

During UE as shown in Figure 7 carries out SIP registration, agent equipment receives the Session initiation Protocol SIP registration demand signalling of the user equipment (UE) of the eNB forwarding, the identification information of the UE is carried in the SIP registration demand signalling, the position updating request that CS core network element is capable of handling is generated according to the identification information of the UE carried in the SIP registration demand signalling, the position updating request is sent to the CS core network element；And receive the location updating received message that the CS core network element is returned according to the position updating request, the location updating received message is used to indicate the SIP registration request for receiving the UE, and sends SIP registration to the eNB according to the location updating received message and complete signaling；

SIP registration completion signaling is transmitted to the UE by the eNB.

UE carries out SIP registration, and detailed process is as follows:

Step 701:eNB sends SIP registration (Register) request of UE to agent equipment；

Step 702: SIP registration request is converted to the position updating request that CS core network element is capable of handling by agent equipment, sends the position updating request to CS core network element MSC；

Step 703:MSC sends location updating received message to agent equipment；

Step 704: agent equipment sends the sip message of 200ok by eNB to UE.

Four, calling procedure

In calling procedure as shown in Figure 8, agent equipment receives the sip request message of the creation session of user equipment (UE), session parameter is carried in the sip request message of the creation session, the sip request message of the creation session is converted into the connection management that CS core network element is capable of handling and requests related signaling, connection management request related signaling is sent to the CS core network element；

And receive the radio access bearer RAB allocation request message that the CS core network element requests related signaling to return according to the connection management, voice bearer is established according to the RAB allocation request message, and carrying foundation request is generated according to the RAB allocation request message and is sent to the MME；

And it receives the carrying that the MME is returned after establishing request according to the carrying and being the VoLTE carrying that the agent equipment is established between the UE and establishes response, and the RAB assignment response message that response obtains the correspondence RAB allocation request message that CS core network element is capable of handling is established according to the carrying, Xiang Suoshu CS core network element sends the RAB assignment response message of the corresponding RAB allocation request message；

And receive the connection message that the CS core network element returns, instruction session connection, which is obtained, according to the connection message establishes the SIP signaling completed, instruction session connection, which is sent, to the UE by the eNB establishes the SIP signaling completed, and the UE for receiving the eNB forwarding corresponds to the instruction session connection and establishes the response signaling that the SIP signaling completed returns, the response message that the response signaling that the SIP signaling completed is established in the instruction session connection obtains the connection message that the CS core network element is capable of handling is corresponded to based on the received, the response message of the connection message is returned to the CS core network element.

In calling procedure, after agent equipment establishes the RAB assignment response message that response sends to the CS core network element the corresponding RAB allocation request message also according to the carrying, receive the ALERTING message that the CS core network element is sent, the SIP signaling of the instruction called party to calling party playing RBT is sent to the UE by the eNB by the SIP signaling that the ALERTING message is converted to instruction called party to calling party playing RBT.

In calling procedure, after connection management request related signaling is sent to the CS core network element by agent equipment, receive the message that the active calls that the CS core network element returns are being handled, the sip message that the message that the active calls are being handled is converted to instruction session progress, by the instruction session The sip message of progress is sent to the UE by eNB.

Wherein, calling identification and called identification are included at least in session parameter.

The detailed process of caller is as follows:

Step 801:eNB sends the sip request message of the creation session of UE, i.e. Invite message to agent equipment, carries session parameter in the Invite message；

Step 802: Invite message is converted to the connection management that CS core network element is capable of handling and requests related signaling by agent equipment, connection management request related signaling includes connection management service request (CM Service Request) and foundation request (Setup), CM Service Request and Setup are sent to CS core network element MSC, audio call is established with request；

Step 803:MSC sends the message (Call Proceeding) that active calls are being handled to agent equipment；

Step 804: the message that agent equipment is handling active calls is converted to the sip message of instruction session progress, that is SIP signaling: 183Session Progress, 183Session Progress is sent to UE by eNB, to notify UE that active calls are being handled；

Step 805:eNB sends the Prack signaling of UE to agent equipment；

Step 806: agent equipment sends confirmation signaling, i.e. SIP signaling: 200OK to UE by eNB；

Step 807:MSC sends RAB allocation request message (RAB Assignment Request) to agent equipment；

Step 808: agent equipment establishes voice bearer according to the RAB allocation request message, and generates carrying foundation request according to the RAB allocation request message and be sent to the MME；

Step 809:MME initiates to establish the process of VoLTE carrying to UE, i.e., establishes request activation purpose EPS according to carrying and carry (Dedicated EPS Brearer), send context request (Context Request) to UE；

Step 810:UE returns to context Accept message (Context Accept) to MME；

Step 811:MME sends carrying to agent equipment and establishes response；

Step 812: agent equipment establishes the RAB assignment response (RAB Assignment Response) that response obtains the RAB allocation request message that CS core network element is capable of handling according to carrying, to MSC Return to RAB assignment response；

Step 813:MSC sends ALERTING message (Alerting) to agent equipment；

Step 814: the ALERTING message is converted to the SIP signaling of instruction called party to calling party playing RBT, i.e. SIP signaling: 180Ring by agent equipment, sends 180Ring to UE by eNB；

Step 815: agent equipment receives the connection message (Connect) that MSC is sent；

Step 816: connection message is converted to confirmation signaling, i.e. SIP signaling: 200OK by agent equipment, sends 200OK to UE by eNB；

Step 817: agent equipment receives the sip response signaling (ACK) that UE is sent；

Step 818: agent equipment sends connection response message by the connection response message (Connect ACK) that sip response Signalling conversion is that CS core network element is capable of handling, to MSC, and so far voice connection is successfully established.

Five, called flow

In called flow as shown in Figure 9, the agent equipment receives the paging message that the CS core network element is sent, session parameter is carried in the paging message, obtain the session parameter carried in the paging message, the session parameter is sent to the MME, the MME is received according to the page response returned after session parameter paging to the UE, the UE page response returned is converted into the page response that CS core network element is capable of handling, and sends the page response that the CS core network element is capable of handling to the CS core network element；

And it receives the audio call that the CS core network element is sent and establishes request, sip request message of the request by the eNB to UE transmission creation session is established according to the audio call, after the confirmation message for receiving the sip request message that the UE that the eNB is returned is directed to the creation session, the audio call confirmation message that the CS core network element is capable of handling is obtained according to the confirmation message of the sip request message for the creation session, Xiang Suoshu CS core network element sends the audio call confirmation message；

And receive the radio access bearer RAB distribution request that the CS core network element is sent, voice bearer is established according to the RAB distribution request, and send carrying to the MME and establish request, it receives the MME and is established between the UE and the agent equipment according to carrying foundation request Response is established in the carrying returned after VoLTE carrying, the RAB assignment response that response obtains the correspondence RAB distribution request that the CS core network element is capable of handling is established according to the carrying, Xiang Suoshu CS core network element sends the RAB assignment response of the corresponding RAB distribution request；

And after receiving the connection confirmation message for the UE that the eNB is sent, the connection confirmation message is converted into the connection message that CS core network element is capable of handling, the connection message is sent to the CS core network element, after the response message for receiving the correspondence connection message that the CS core network element is sent, the SIP signaling of the instruction connection confirmation is sent to the UE by the eNB by the SIP signaling that the response message of the connection message is converted to instruction connection confirmation.

In called flow, after the agent equipment sends the RAB assignment response of the corresponding RAB distribution request to the CS core network element, the SIP signaling of the instruction called party to calling party playing RBT of the UE is received by the eNB, SIP Signalling conversion by the instruction called party to calling party playing RBT is the ALERTING message that the CS core network element is capable of handling, and the ALERTING message is sent to the CS core network element.

Wherein, calling identification and called identification are included at least in session parameter.

Called detailed process is as follows:

Step 901:CS core network element MSC sends paging message (Paging) to agent equipment, carries session parameter in the paging message；

Step 902: the session parameter carried in paging message is sent to MME by agent equipment, entrusts MME distributing paging, specifically, agent equipment carries the session parameter by the message arranged between MME；

Step 903:MME pages called UE according to session parameter；

Step 904:UE responds the paging of MME, initiates the process for establishing VoLTE carrying, sends PDN connection request (PDN Connectivity Request to MME；PDN, Packet Data Network, Packet Data Network)；

Step 905:MME activates the default EPS bearing (Default EPS Bearer) of UE, sends context request (Context Request) to UE；

Step 906:UE returns to context Accept message (Context Accept) to MME；

Step 907:MME returns to page response to agent equipment, and page response passes through the message arranged between MME and agent equipment and carries；

Step 908: the page response of MME is converted to the page response (Paging Response) that CS core network element is capable of handling by agent equipment, returns to the page response that the CS core network element is capable of handling to MSC；

Step 909:MSC sends audio call to agent equipment and establishes request (Setup)；

Step 910: Setup is converted to the sip request message of creation session, i.e. Invite message by agent equipment, and Invite message is sent to UE by eNB；

Step 911:eNB sends the sip message of the instruction session progress of UE, i.e. SIP signaling: 183Session Progress to agent equipment；

Step 912: agent equipment returns to Prack signaling to UE by eNB；

Step 913:eNB returns to the confirmation signaling of UE, i.e. SIP signaling: 200OK to agent equipment；

Step 914: 200OK is converted to the audio call confirmation message (Call Confirmed) that CS core network element is capable of handling by agent equipment, sends Call Confirmed to MSC；

Step 915:MSC sends RAB distribution request (RAB Assignment Request) to agent equipment；

Step 916: agent equipment sends carrying to MME and establishes request, and specifically, which establishes the message that request is arranged between agent equipment and MME；

Step 917:MME activates the purpose EPS of UE to carry (Dedicated EPS Brearer), sends context request (Context Request) to UE；

Step 918:UE sends context Accept message (Context Accept) to MME；

Step 919:MME returns to carrying to agent equipment and establishes response；

Step 920: agent equipment establishes response according to the carrying of MME and obtains the RAB assignment response (RAB Assignment Response) that CS core network element is capable of handling, and sends the RAB assignment response to MSC；

Step 921:eNB sends the SIP signaling of the instruction called party to calling party playing RBT of UE, i.e. SIP signaling: 180Ring to agent equipment；

Step 922: 180Ring is converted to the ALERTING message (Alerting) that CS core network element is capable of handling by agent equipment, and Alerting is sent to MSC；

Step 923:eNB returns to the connection confirmation message of UE, i.e. SIP signaling: 200OK to agent equipment；

Step 924: 200OK is converted to the connection message (Connect) that CS core network element is capable of handling by agent equipment, and Connect is sent to MSC；

Step 925:MSC sends connection response message (Connect ACK) to agent equipment；

Step 926: Connect ACK is converted to sip response (ACK) message by agent equipment, and sip response message is sent to UE, and so far the voice connection of called UE is successfully established.

Based on the same inventive concept, the structure of the agent equipment provided in the embodiment of the present invention is as shown in Figure 10, mainly includes communication module 1001 and processing module 1002:

The communication module 1001, the voice VoLTE based on long term evolution LTE for obtaining base station eNB or mobility management entity MME carry related signaling；

The processing module 1002, the VoLTE carrying related signaling for obtaining the communication module 1001 are converted to the CS voice bearer related signaling that circuit commutative field CS core network element is capable of handling；

The communication module 1001, the CS voice bearer related signaling for the processing module 1002 to be converted to are sent to the CS core network element；Alternatively,

The communication module 1001, for obtaining the CS voice bearer related signaling of the CS core network element；

The processing module 1002, the CS voice bearer related signaling for obtaining the communication module 1001 are converted to VoLTE carrying related signaling；

The communication module 1001, the VoLTE carrying related signaling for the processing module 1002 to be converted to are sent to the eNB or MME.

In authentication process, the communication module 1001 is also used to: being received the authentication request of the CS core network element, is at least carried authentication parameter in the authentication request；

The processing module 1002 is also used to: obtaining the authentication parameter in the received authentication request of the communication module；

The communication module 1001 is also used to for the authentication parameter that the processing module obtains being sent to described MME receives the Authentication Response returned by user equipment (UE) according to the authentication parameter that the MME is sent；

The processing module 1002 is also used to: the received Authentication Response of the communication module is converted to the Authentication Response that the CS core network element is capable of handling；

The communication module 1001 is also used to: the Authentication Response that the CS core network element that processing module conversion obtains is capable of handling is sent to the CS core network element.

In Session initiation Protocol (SIP) registration process, the communication module 1001 is also used to: receiving the Session initiation Protocol SIP registration demand signalling of the user equipment (UE) of the eNB forwarding, the identification information of the UE is carried in the SIP registration demand signalling；

The processing module 1002 is also used to: generating position updating request according to the identification information of the UE carried in the received SIP registration demand signalling of the communication module；

The communication module 1001 is also used to: the position updating request that the processing module is generated is sent to the CS core network element, and the location updating received message that the CS core network element is returned according to the position updating request is received, the location updating received message is used to indicate the SIP registration request for receiving the UE；

The processing module 1002 is also used to: being obtained SIP registration according to the received location updating received message of the communication module and is completed signaling；

The communication module 1001 is also used to: Xiang Suoshu eNB sends the SIP registration that the processing module obtains and completes signaling.

In calling procedure, the communication module 1001 is specifically used for: receiving the sip request message of the creation session of the UE of eNB forwarding, carries session parameter in the sip request message of the creation session；

The processing module 1002 is specifically used for: the sip request message of the received creation session of the communication module being converted to the connection management that the CS core network element is capable of handling and requests related signaling；

The communication module 1001 is specifically used for: the connection management request related signaling that the processing module is converted to being sent to the CS core network element, and receives the radio access bearer RAB allocation request message that the CS core network element requests related signaling to return according to the connection management；

The processing module 1002 is specifically used for: according to the received RAB distribution request of communication module Message establishes voice bearer, and generates carrying according to the RAB allocation request message and establish request；

The communication module 1001 is specifically used for: request is established in the carrying that the processing module generates and is sent to the MME, and receives the carrying that the MME is returned after establishing request according to the carrying and being the VoLTE carrying that the agent equipment is established between the UE and establishes response；

The processing module 1002 is specifically used for: establishing the RAB assignment response message that response obtains the correspondence RAB allocation request message that the CS core network element is capable of handling according to the carrying；

The communication module 1001 is specifically used for: Xiang Suoshu CS core network element sends the RAB assignment response message for the correspondence RAB allocation request message that the processing module obtains, and receives the connection message that the CS core network element returns；

The processing module is specifically used for: obtaining SIP registration according to the received connection message of the communication module 1001 and completes signaling；

The communication module 1001 is specifically used for: the UE for sending the instruction session connection that the processing module obtains to the UE by the eNB and establishing the SIP signaling completed, and receive the eNB forwarding corresponds to the instruction session connection and establishes the response signaling that the SIP signaling completed returns；

The processing module is specifically used for: the response message for the connection message that the CS core network element is capable of handling is obtained according to the response signaling that the SIP signaling completed is established in the instruction session connection of the communication module received correspondence；

The communication module 1001 is specifically used for: Xiang Suoshu CS core network element returns to the response message for the connection message that the processing module obtains.

In calling procedure, the communication module 1001 is also used to: after Xiang Suoshu CS core network element sends the RAB assignment response message of the corresponding RAB allocation request message, receiving the ALERTING message that the CS core network element is sent；

The processing module 1002 is also used to: the received ALERTING message of the communication module is converted to the SIP signaling of instruction called party to calling party playing RBT；

The communication module 1001 is also used to: the SIP signaling for the instruction called party to calling party playing RBT that processing module conversion obtains is sent to the UE by the eNB.

In calling procedure, the communication module 1001 is also used to: the connection management is requested related letter After order is sent to the CS core network element, the message that the active calls that the CS core network element returns are being handled is received；

The processing module is also used to: the message that the received active calls of the communication module are being handled is converted to the sip message of instruction session progress；

The communication module 1001 is also used to: the sip message for the instruction session progress that processing module conversion obtains is sent to the UE by the eNB.

In called flow, the communication module 1001 is specifically used for: receiving the paging message that the CS core network element is sent, carries session parameter in the paging message；

The processing module 1002 is specifically used for: obtaining the session parameter carried in the received paging message of the communication module；

The communication module 1001 is specifically used for: the session parameter that the processing module is obtained is sent to the MME, receives the MME according to the page response returned after session parameter paging to the UE；

The processing module 1002 is specifically used for: the received MME of the communication module page response returned is converted to the page response that the CS core network element is capable of handling；

The communication module 1001 is specifically used for: the page response that the CS core network element that processing module conversion obtains is capable of handling being sent to the CS core network element, the audio call that the CS core network element is sent is received and establishes request；

The processing module 1002 is specifically used for: establishing the sip request message that request obtains creation session according to the received audio call of the communication module；

The communication module 1001 is specifically used for: sending the sip request message for the creation session that the processing module obtains to the UE by the eNB, receives the confirmation message for the sip request message for creating session that the UE of the eNB forwarding is returned；

The processing module, is specifically used for: the confirmation message of the received sip request message for the creation session of the communication module is converted to the audio call confirmation message that the CS core network element is capable of handling；

The communication module 1001 is specifically used for: Xiang Suoshu CS core network element sends the processing module The audio call confirmation message obtained is converted, and receives the radio access bearer RAB distribution request that the CS core network element is sent；

The processing module 1002 is specifically used for: establishing voice bearer according to the received RAB distribution request of the communication module and obtains carrying foundation request；

The communication module 1001 is specifically used for: Xiang Suoshu MME sends the carrying that the processing module conversion obtains and establishes request, receives the carrying that the MME is returned after establishing the VoLTE carrying that request is established between the UE and the agent equipment according to the carrying and establishes response；

The processing module, is specifically used for: establishing the RAB assignment response that response obtains the correspondence RAB distribution request that the CS core network element is capable of handling according to the received carrying of the communication module；

The communication module 1001 is specifically used for: Xiang Suoshu CS core network element sends the RAB assignment response for the correspondence RAB distribution request that the processing module obtains, and receives the connection confirmation message of the UE of the eNB forwarding；

The processing module is specifically used for: the received connection confirmation message of the communication module is converted to the connection message that the CS core network element is capable of handling；

The communication module 1001 is specifically used for: Xiang Suoshu CS core network element sends the connection message that the processing module conversion obtains, and receives the response message for the correspondence connection message that the CS core network element is sent；

The processing module, is specifically used for: the response message of the received connection message of the communication module is converted to the SIP signaling of instruction connection confirmation；

The communication module 1001 is specifically used for: the SIP signaling for the instruction connection confirmation that processing module conversion obtains is sent to the UE by the eNB.

In called flow, the communication module 1001 is also used to: after Xiang Suoshu CS core network element sends the RAB assignment response of the corresponding RAB distribution request, receiving the SIP signaling of the instruction called party to calling party playing RBT of the UE of the eNB forwarding；

The processing module 1002 is also used to: the SIP Signalling conversion by the received instruction called party to calling party playing RBT of the communication module is the ALERTING message that the CS core network element is capable of handling；

The communication module 1001 is also used to: the ALERTING message that processing module conversion obtains is sent to the CS core network element.

Correspondingly, the embodiment of the invention also provides another agent equipment, the specific implementation of the agent equipment can be found in the above-mentioned description as described in agent equipment, and overlaps will not be repeated, as shown in figure 11, which mainly includes processor 1101 and communication interface 1102.Processor 1101 carries related signaling based on VoLTE by the acquisition of communication interface 1102 eNB's or MME, the VoLTE carrying related signaling of acquisition is converted into the CS voice bearer related signaling that CS core network element is capable of handling, and the CS voice bearer related signaling being converted to is sent to by the CS core network element by communication interface 1102；And the CS voice bearer related signaling of the CS core network element is obtained by communication interface 1102, the CS voice bearer related signaling that will acquire is converted to VoLTE carrying related signaling, and the VoLTE being converted to carrying related signaling is sent to the eNB or MME by communication interface 1102.The specific implementation of agent equipment can be found in the specific descriptions of above-mentioned each communication process, and details are not described herein again.Wherein processor can be general processor, digital signal processor, specific integrated circuit, field programmable gate array or other programmable logic device, discrete gate perhaps transistor logic, discrete hardware components may be implemented or execute disclosed each method, step and logic diagram in the embodiment of the present invention.General processor can be microprocessor or any conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly in hardware processor and execute completion, or in processor hardware and software module combination execute completion.

Based on the same inventive concept, the specific structure of MME provided in an embodiment of the present invention is as shown in figure 12, mainly including receiving module 1201 and sending module 1202, specifically:

Receiving module 1201, related signaling is carried for receiving the voice VoLTE based on long term evolution LTE that the agent equipment is sent, the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；

Sending module 1202, the VoLTE for sending user equipment (UE) to agent equipment carry related signaling.

It further include processing module 1203 in authentication process；

The receiving module is specifically used for: receiving the authentication parameter that the agent equipment is sent；

The processing module is specifically used for: generating the non access stratum NAS message for carrying the authentication parameter；

The sending module is specifically used for: the NAS message for carrying the authentication parameter is sent to the UE.

In attaching process, the receiving module is specifically used for: receiving the attach request for the user equipment (UE) that the eNB is sent；

The sending module is specifically used for: returning to the request that activation VoLTE is carried to the eNB after the attach request for receiving the UE, carries VoLTE bearing parameter in the request of the activation VoLTE carrying.

Wherein, the VoLTE bearing parameter includes the destination address of grade of service parameter QCI, APN and VoLTE carrying, and the destination address of the VoLTE carrying is the address of the agent equipment.

In calling procedure, the receiving module is specifically used for: receiving the carrying that the agent equipment is sent and establishes request；

The processing module is specifically used for: establishing request according to the carrying is that the VoLTE that the agent equipment is established between the UE is carried；

The sending module is specifically used for: Xiang Suoshu agent equipment returns to carrying and establishes response.

In called flow, the receiving module is specifically used for: receiving the session parameter that the agent equipment is sent, carries in the paging message that the session parameter sends for the received CS core network element of the agent equipment；

The processing module is specifically used for: according to session parameter paging to the UE；

The sending module is specifically used for: Xiang Suoshu agent equipment returns to page response；

The receiving module is specifically used for: receiving the carrying that the agent equipment is sent and establishes request；

The processing module is specifically used for: establishing the VoLTE that request is established between the UE and the agent equipment according to the carrying and carries；

The sending module is specifically used for: Xiang Suoshu agent equipment returns to carrying and establishes response.

Based on the same inventive concept, the specific implementation that the embodiment of the present invention also provides another kind MME, the MME can be found in the above-mentioned description as described in MME, overlaps will not be repeated, as shown in figure 13, which mainly includes processor 1301 and communication interface 1302, and processor 1301 passes through communication interface 1302 The VoLTE that Receiving Agent equipment is sent carries related signaling, and the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；And related signaling is carried to the VoLTE that agent equipment sends user equipment (UE) by communication interface 1302.The specific implementation of MME can be found in the description as described in MME in above-mentioned each communication process, and details are not described herein again.Wherein processor can be general processor, digital signal processor, specific integrated circuit, field programmable gate array or other programmable logic device, discrete gate perhaps transistor logic, discrete hardware components may be implemented or execute disclosed each method, step and logic diagram in the embodiment of the present invention.General processor can be microprocessor or any conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly in hardware processor and execute completion, or in processor hardware and software module combination execute completion.

Based on the same inventive concept, the structure of eNB provided in an embodiment of the present invention is as shown in figure 14, mainly including receiving module 1401 and sending module 1402, specifically:

Receiving module 1401, related signaling is carried for receiving the voice VoLTE based on long term evolution LTE that the agent equipment is sent, the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；

Sending module 1402, the VoLTE for sending user equipment (UE) to agent equipment carry related signaling.

The specific implementation of eNB can be found in the description as described in eNB in above-mentioned each communication process in the embodiment, and overlaps will not be repeated.

Based on the same inventive concept, the embodiment of the invention also provides another eNB, the specific implementation of the eNB can be found in the above-mentioned description as described in eNB, overlaps will not be repeated, as shown in figure 15, the eNB mainly includes processor 1501 and transceiver 1502, and processor 1501 carries related signaling by the VoLTE that 1502 Receiving Agent equipment of transceiver is sent, and the VoLTE carrying related signaling is converted for CS voice bearer related signaling of the agent equipment to CS core network element and obtained；Related signaling is carried to the VoLTE that agent equipment sends UE by transceiver 1502.

The specific implementation of eNB can be found in the description as described in MME in above-mentioned each communication process, and details are not described herein again.Wherein processor can be general processor, digital signal processor, specific integrated circuit, show Perhaps transistor logic, discrete hardware components may be implemented or execute disclosed each method, step and logic diagram in the embodiment of the present invention for field programmable gate array or other programmable logic device, discrete gate.General processor can be microprocessor or any conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly in hardware processor and execute completion, or in processor hardware and software module combination execute completion.

Based on system above framework, in the embodiment of the present invention, as shown in figure 16, realizing VoLTE business by agent equipment, detailed process is as follows:

Step 1601: agent equipment obtains base station eNB or the voice VoLTE based on long term evolution LTE of mobility management entity MME carries related signaling, the VoLTE carrying related signaling of acquisition is converted into the CS voice bearer related signaling that circuit commutative field CS core network element is capable of handling, and the CS voice bearer related signaling being converted to is sent to the CS core network element；

Step 1602: the agent equipment obtains the CS voice bearer related signaling of the CS core network element, the CS voice bearer related signaling that will acquire is converted to VoLTE carrying related signaling, and the VoLTE being converted to carrying related signaling is sent to the eNB or MME.

In the embodiment, realize that the specific implementation of each communication process in VoLTE business procedure can be found in the associated description of above system part by agent equipment, overlaps will not be repeated.

In authentication process, the agent equipment receives the authentication request of the CS core network element, at least carries authentication parameter in the authentication request, and the authentication parameter in the authentication request is sent to the MME；

The agent equipment receives the Authentication Response returned by user equipment (UE) according to the authentication parameter that the MME is sent, the Authentication Response is converted into the Authentication Response that the CS core network element is capable of handling, Xiang Suoshu CS core network element sends the Authentication Response that the CS core network element is capable of handling.

During SIP registration, the agent equipment receives the Session initiation Protocol SIP registration demand signalling of the user equipment (UE) of the eNB forwarding, the identification information of the UE is carried in the SIP registration demand signalling, position updating request is generated according to the identification information of the UE carried in the SIP registration demand signalling, the position updating request is sent to the CS core network element；

The agent equipment receives the position that the CS core network element is returned according to the position updating request Update received message is set, the location updating received message is used to indicate the SIP registration request for receiving the UE, and obtains SIP registration according to the location updating received message and complete signaling, and Xiang Suoshu eNB sends the SIP registration and completes signaling.

In calling procedure, the agent equipment receives the sip request message of the creation session of user equipment (UE), session parameter is carried in the sip request message of the creation session, the sip request message of the creation session is converted into the connection management that the CS core network element is capable of handling and requests related signaling, connection management request related signaling is sent to the CS core network element；

The agent equipment receives the radio access bearer RAB allocation request message that the CS core network element requests related signaling to return according to the connection management, voice bearer is established according to the RAB allocation request message, and carrying is generated according to the RAB allocation request message and establishes request, request is established into the carrying and is sent to the MME；

The agent equipment receives the carrying that the MME is returned after establishing request according to the carrying and being the VoLTE carrying that the agent equipment is established between the UE and establishes response, and the RAB assignment response message that response obtains the correspondence RAB allocation request message that the CS core network element is capable of handling is established according to the carrying, Xiang Suoshu CS core network element sends the RAB assignment response message of the corresponding RAB allocation request message；

The agent equipment receives the connection message that the CS core network element returns, instruction session connection, which is obtained, according to the connection message establishes the SIP signaling completed, the instruction session connection, which is sent, to the UE by the eNB establishes the SIP signaling completed, and the UE for receiving the eNB forwarding corresponds to the instruction session connection and establishes the response signaling that the SIP signaling completed returns, the response message for the connection message that the CS core network element is capable of handling is obtained according to the response signaling that the SIP signaling completed is established in the instruction session connection, the response message of the connection message is returned to the CS core network element.

In calling procedure, after the agent equipment sends the RAB assignment response message of the corresponding RAB allocation request message to the CS core network element, receive the ALERTING message that the CS core network element is sent, the SIP signaling of the instruction called party to calling party playing RBT is sent to the UE by the eNB by the SIP signaling that the ALERTING message is converted to instruction called party to calling party playing RBT.

In calling procedure, connection management request related signaling is sent to the CS by the agent equipment After core network element, receive the message that the active calls that the CS core network element returns are being handled, the sip message of the instruction session progress is sent to the UE by the eNB by the sip message that the message that the active calls are being handled is converted to instruction session progress.

In called flow, the agent equipment receives the paging message that the CS core network element is sent, session parameter is carried in the paging message, obtain the session parameter carried in the paging message, the session parameter is sent to the MME, the MME is received according to the page response returned after session parameter paging to the UE, the MME page response returned is converted into the page response that the CS core network element is capable of handling, Xiang Suoshu CS core network element sends the page response that the CS core network element is capable of handling；

The agent equipment receives the audio call that the CS core network element is sent and establishes request, the sip request message that request obtains creation session is established according to the audio call, the sip request message of the creation session is sent to the UE by the eNB, after the confirmation message for the sip request message for the creation session that the UE for receiving the eNB forwarding is returned, the audio call confirmation message that the CS core network element is capable of handling will be converted to for the confirmation message of the sip request message of the creation session, the audio call confirmation message is sent to the CS core network element；

The agent equipment receives the radio access bearer RAB distribution request that the CS core network element is sent, voice bearer, which is established, according to the RAB distribution request obtains carrying foundation request, and the carrying is sent to the MME and establishes request, it receives the carrying that the MME is returned after establishing the VoLTE carrying that request is established between the UE and the agent equipment according to the carrying and establishes response, the RAB assignment response that response obtains the correspondence RAB distribution request that the CS core network element is capable of handling is established according to the carrying, the RAB assignment response of the corresponding RAB distribution request is sent to the CS core network element；

After the agent equipment receives the connection confirmation message of the UE of the eNB forwarding, the connection confirmation message is converted into the connection message that the CS core network element is capable of handling, the connection message is sent to the CS core network element, after the response message for receiving the correspondence connection message that the CS core network element is sent, the SIP signaling of the instruction connection confirmation is sent to the UE by the eNB by the SIP signaling that the response message of the connection message is converted to instruction connection confirmation.

In called flow, after the agent equipment sends the RAB assignment response of the corresponding RAB distribution request to the CS core network element, receive the SIP signaling of the instruction called party to calling party playing RBT of the UE of the eNB forwarding, SIP Signalling conversion by the instruction called party to calling party playing RBT is the ALERTING message that the CS core network element is capable of handling, and the ALERTING message is sent to the CS core network element.

Based on system above framework, in the embodiment of the present invention, as shown in figure 17, realizing VoLTE business by MME, detailed process is as follows:

The voice VoLTE based on long term evolution LTE that step 1701:MME Receiving Agent equipment is sent carries related signaling, and the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；

Step 1702:MME carries related signaling to the VoLTE that the agent equipment sends user equipment (UE).

In the embodiment, realize that the specific implementation of each communication process in VoLTE business procedure can be found in the associated description of above system part by MME, overlaps will not be repeated.

Based on system above framework, in the embodiment of the present invention, as shown in figure 18, realizing VoLTE business by eNB, detailed process is as follows:

The voice VoLTE based on long term evolution LTE that step 1801:eNB Receiving Agent equipment is sent carries related signaling, and the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；

Step 1802:eNB carries related signaling to the VoLTE that agent equipment sends user equipment (UE).

In the embodiment, realize that the specific implementation of each communication process in VoLTE business procedure can be found in the associated description of above system part by eNB, overlaps will not be repeated.

It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program product.Therefore, the form of complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the present invention.Moreover, the form for the computer program product implemented in the computer-usable storage medium (including but not limited to magnetic disk storage and optical memory etc.) that one or more wherein includes computer usable program code can be used in the present invention.

The present invention be referring to according to the method for the embodiment of the present invention, the flowchart and/or the block diagram of equipment (system) and computer program product describes.It should be understood that the combination of process and/or box in each flow and/or block and flowchart and/or the block diagram that can be realized by computer program instructions in flowchart and/or the block diagram.These computer program instructions be can provide to the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate a machine, so that generating by the instruction that computer or the processor of other programmable data processing devices execute for realizing the device for the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, to be able to guide in computer or other programmable data processing devices computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates the manufacture including command device, which realizes the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that series of operation steps are executed on a computer or other programmable device to generate computer implemented processing, thus the step of instruction executed on a computer or other programmable device is provided for realizing the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.

Obviously, those skilled in the art various changes and modifications can be made to the invention without departing from the spirit and scope of the present invention.If then the present invention is also intended to include these modifications and variations in this way, these modifications and changes of the present invention is within the scope of the claims of the present invention and its equivalent technology.

Claims (28)

1. A kind of agent equipment, which is characterized in that the agent equipment is connected with circuit commutative field CS core network element, base station eNB and mobility management entity MME respectively, and the agent equipment includes communication module and processing module；

   The communication module, the voice VoLTE based on long term evolution LTE for obtaining the eNB or MME carry related signaling；

   The processing module, the VoLTE carrying related signaling for obtaining the communication module are converted to the CS voice bearer related signaling that the CS core network element is capable of handling；

   The communication module, the CS voice bearer related signaling for the processing module to be converted to are sent to the CS core network element；Alternatively,

   The communication module, for obtaining the CS voice bearer related signaling of the CS core network element；

   The processing module, the CS voice bearer related signaling for obtaining the communication module are converted to the carrying related signaling of the voice VoLTE based on long term evolution LTE；

   The communication module, the VoLTE carrying related signaling for the processing module to be converted to are sent to the eNB or MME.
2. Agent equipment as described in claim 1, which is characterized in that

   The communication module is also used to:

   The authentication request of the CS core network element is received, at least carries authentication parameter in the authentication request；

   The processing module, is also used to:

   Obtain the authentication parameter in the received authentication request of the communication module；

   The communication module, is also used to:

   The authentication parameter that the processing module is obtained is sent to the MME；

   The communication module, is also used to:

   Receive the Authentication Response returned by user equipment (UE) according to the authentication parameter that the MME is sent；

   The processing module, is also used to:

   The received Authentication Response of the communication module is converted into the Authentication Response that the CS core network element is capable of handling；

   The communication module, is also used to:

   The Authentication Response that the CS core network element that processing module conversion obtains is capable of handling is sent to the CS core network element.
3. Agent equipment as described in claim 1, which is characterized in that

   The communication module, is also used to:

   The Session initiation Protocol SIP registration demand signalling of the user equipment (UE) of the eNB forwarding is received, the identification information of the UE is carried in the SIP registration demand signalling；

   The processing module, is also used to:

   Position updating request is generated according to the identification information of the UE carried in the received SIP registration demand signalling of the communication module；

   The communication module, is also used to:

   The position updating request that the processing module is generated is sent to the CS core network element, and the location updating received message that the CS core network element is returned according to the position updating request is received, the location updating received message is used to indicate the SIP registration request for receiving the UE；

   The processing module, is also used to:

   SIP registration, which is obtained, according to the received location updating received message of the communication module completes signaling；

   The communication module, is also used to:

   The SIP registration that the processing module obtains, which is sent, to the eNB completes signaling.
4. Agent equipment as described in any one of claims 1-3, which is characterized in that

   The communication module, is specifically used for:

   The sip request message of the creation session of the user equipment (UE) of the eNB forwarding is received, carries session parameter in the sip request message of the creation session；

   The processing module, is specifically used for:

   The sip request message of the received creation session of the communication module is converted into the CS core The connection management that network element is capable of handling requests related signaling；

   The communication module, is specifically used for:

   The connection management request related signaling that the processing module is converted to is sent to the CS core network element, and receives the radio access bearer RAB allocation request message that the CS core network element requests related signaling to return according to the connection management；

   The processing module, is specifically used for:

   Voice bearer is established according to the received RAB allocation request message of the communication module, and carrying is generated according to the RAB allocation request message and establishes request；

   The communication module, is specifically used for:

   Request is established into the carrying that the processing module generates and is sent to the MME, and receives the carrying that the MME is returned after establishing request according to the carrying and being the VoLTE carrying that the agent equipment is established between the UE and establishes response；

   The processing module, is specifically used for:

   The RAB assignment response message that response obtains the correspondence RAB allocation request message that the CS core network element is capable of handling is established according to the carrying；

   The communication module, is specifically used for:

   The RAB assignment response message for the correspondence RAB allocation request message that the processing module obtains is sent to the CS core network element, and receives the connection message that the CS core network element returns；

   The processing module, is specifically used for:

   Instruction session connection, which is obtained, according to the received connection message of the communication module establishes the SIP signaling completed；

   The communication module, is specifically used for:

   The UE for sending the instruction session connection that the processing module obtains to the UE by the eNB and establishing the SIP signaling completed, and receive the eNB forwarding corresponds to the instruction session connection and establishes the response signaling that the SIP signaling completed returns；

   The processing module, is specifically used for:

   The SIP signaling completed is established according to the instruction session connection of the communication module received correspondence Response signaling obtains the response message for the connection message that the CS core network element is capable of handling；

   The communication module, is specifically used for:

   The response message for the connection message that the processing module obtains is returned to the CS core network element.
5. Agent equipment as claimed in claim 4, which is characterized in that

   The communication module, is also used to:

   After the RAB assignment response message for sending the corresponding RAB allocation request message to the CS core network element, the ALERTING message that the CS core network element is sent is received；

   The processing module, is also used to:

   The received ALERTING message of the communication module is converted to the SIP signaling of instruction called party to calling party playing RBT；

   The communication module, is also used to:

   The SIP signaling for the instruction called party to calling party playing RBT that processing module conversion obtains is sent to the UE by the eNB.
6. Agent equipment as claimed in claim 4, which is characterized in that

   The communication module, is also used to:

   After connection management request related signaling is sent to the CS core network element, the message that the active calls that the CS core network element returns are being handled is received；

   The processing module, is also used to:

   The message that the received active calls of the communication module are being handled is converted to the sip message of instruction session progress；

   The communication module, is also used to:

   The sip message for the instruction session progress that processing module conversion obtains is sent to the UE by the eNB.
7. Agent equipment as described in any one of claims 1-3, which is characterized in that

   The communication module, is specifically used for:

   The paging message that the CS core network element is sent is received, session ginseng is carried in the paging message Number；

   The processing module, is specifically used for:

   Obtain the session parameter carried in the received paging message of the communication module；

   The communication module, is specifically used for:

   The session parameter that the processing module is obtained is sent to the MME, receives the MME according to the page response returned after session parameter paging to the UE；

   The processing module, is specifically used for:

   The received MME of the communication module page response returned is converted into the page response that the CS core network element is capable of handling；

   The communication module, is specifically used for:

   The page response that the CS core network element that processing module conversion obtains is capable of handling is sent to the CS core network element, the audio call that the CS core network element is sent is received and establishes request；

   The processing module, is specifically used for:

   The sip request message that request obtains creation session is established according to the received audio call of the communication module；

   The communication module, is specifically used for:

   The sip request message for sending the creation session that the processing module obtains to the UE by the eNB receives the confirmation message for the sip request message for creating session that the UE of the eNB forwarding is returned；

   The processing module, is specifically used for:

   The confirmation message of the received sip request message for the creation session of the communication module is converted into the audio call confirmation message that the CS core network element is capable of handling；

   The communication module, is specifically used for:

   The audio call confirmation message that the processing module conversion obtains is sent to the CS core network element, and receives the radio access bearer RAB distribution request that the CS core network element is sent；

   The processing module, is specifically used for:

   Voice bearer, which is established, according to the received RAB distribution request of the communication module obtains carrying foundation Request；

   The communication module, is specifically used for:

   The carrying that the processing module conversion obtains is sent to the MME and establishes request, is received the carrying that the MME is returned after establishing the VoLTE carrying that request is established between the UE and the agent equipment according to the carrying and is established response；

   The processing module, is specifically used for:

   The RAB assignment response that response obtains the correspondence RAB distribution request that the CS core network element is capable of handling is established according to the received carrying of the communication module；

   The communication module, is specifically used for:

   The RAB assignment response for the correspondence RAB distribution request that the processing module obtains is sent to the CS core network element, and receives the connection confirmation message of the UE of the eNB forwarding；

   The processing module, is specifically used for:

   The received connection confirmation message of the communication module is converted into the connection message that the CS core network element is capable of handling；

   The communication module, is specifically used for:

   The connection message that the processing module conversion obtains is sent to the CS core network element, receives the response message for the correspondence connection message that the CS core network element is sent；

   The processing module, is specifically used for:

   The response message of the received connection message of the communication module is converted to the SIP signaling of instruction connection confirmation；

   The communication module, is specifically used for:

   The SIP signaling for the instruction connection confirmation that processing module conversion obtains is sent to the UE by the eNB.
8. Agent equipment as claimed in claim 7, which is characterized in that

   The communication module, is also used to:

   After the RAB assignment response for sending the corresponding RAB distribution request to the CS core network element, the SIP signaling of the instruction called party to calling party playing RBT of the UE of the eNB forwarding is received；

   The processing module, is also used to:

   SIP Signalling conversion by the received instruction called party to calling party playing RBT of the communication module is the ALERTING message that the CS core network element is capable of handling；

   The communication module, is also used to:

   The ALERTING message that processing module conversion obtains is sent to the CS core network element.
9. Agent equipment as described in claim 1, which is characterized in that the agent equipment is integrated in radio network controller (RNC) or gateway SGW.
10. A kind of mobility management entity MME characterized by comprising

    Receiving module, the voice VoLTE based on long term evolution LTE sent for Receiving Agent equipment carry related signaling, and the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；

    Sending module, the VoLTE for sending user equipment (UE) to the agent equipment carry related signaling.
11. MME as claimed in claim 10, which is characterized in that further include processing module；

    The receiving module is specifically used for:

    Receive the authentication parameter that the agent equipment is sent；

    The processing module is specifically used for:

    Generate the non access stratum NAS message for carrying the authentication parameter；

    The sending module is specifically used for:

    The NAS message for carrying the authentication parameter is sent to the UE.
12. MME as claimed in claim 11, which is characterized in that the receiving module is specifically used for:

    It receives the carrying that the agent equipment is sent and establishes request；

    The processing module is specifically used for:

    Establishing request according to the carrying is that the VoLTE that the agent equipment is established between the UE is carried；

    The sending module is specifically used for:

    Carrying, which is returned, to the agent equipment establishes response.
13. MME as claimed in claim 11, which is characterized in that the receiving module is specifically used for: the session parameter that the agent equipment is sent is received, is carried in the paging message that the session parameter sends for the received CS core network element of the agent equipment；

    The processing module is specifically used for: according to session parameter paging to the UE；

    The sending module is specifically used for: Xiang Suoshu agent equipment returns to page response；

    The receiving module is specifically used for: receiving the carrying that the agent equipment is sent and establishes request；

    The processing module is specifically used for: establishing the VoLTE that request is established between the UE and the agent equipment according to the carrying and carries；

    The sending module is specifically used for: Xiang Suoshu agent equipment returns to carrying and establishes response.
14. A kind of base station eNB characterized by comprising

    Receiving module, the voice VoLTE based on long term evolution LTE sent for Receiving Agent equipment carry related signaling, and the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；

    Sending module, the VoLTE for sending user equipment (UE) to agent equipment carry related signaling.
15. A kind of VoLTE business realizing system, it is characterised in that it includes base station eNB, the mobility management entity MME as described in claim 10-13 is any, the agent equipment as described in claim 1-9 is any and circuit commutative field CS core network element as claimed in claim 14；

    The agent equipment is separately connected the eNB, the MME and the CS core network element；

    The agent equipment is used to the voice VoLTE carrying related signaling based on LTE of the eNB or MME being converted to the CS voice bearer related signaling that the CS core network element is capable of handling, and the CS voice bearer related signaling is sent to the CS core network element；And for the CS voice bearer related signaling of the CS core network element to be converted to VoLTE carrying related signaling, and it is sent to the eNB or MME.
16. A kind of VoLTE service implementation method characterized by comprising

    Agent equipment obtains base station eNB or the voice VoLTE based on long term evolution LTE of mobility management entity MME carries related signaling, the VoLTE carrying related signaling of acquisition is converted into the CS voice bearer related signaling that circuit commutative field CS core network element is capable of handling, and the CS that will be converted to Voice bearer related signaling is sent to the CS core network element；

    The agent equipment obtains the CS voice bearer related signaling of the CS core network element, the CS voice bearer related signaling that will acquire is converted to VoLTE carrying related signaling, and the VoLTE being converted to carrying related signaling is sent to the eNB or MME.
17. The method described in claim 16, which is characterized in that the method also includes:

    The agent equipment receives the authentication request of the CS core network element, at least carries authentication parameter in the authentication request, and the authentication parameter in the authentication request is sent to the MME；

    The agent equipment receives the Authentication Response returned by user equipment (UE) according to the authentication parameter that the MME is sent, the Authentication Response is converted into the Authentication Response that the CS core network element is capable of handling, Xiang Suoshu CS core network element sends the Authentication Response that the CS core network element is capable of handling.
18. The method described in claim 16, which is characterized in that the method also includes:

    The agent equipment receives the Session initiation Protocol SIP registration demand signalling of the user equipment (UE) of the eNB forwarding, the identification information of the UE is carried in the SIP registration demand signalling, position updating request is generated according to the identification information of the UE carried in the SIP registration demand signalling, the position updating request is sent to the CS core network element；

    The agent equipment receives the location updating received message that the CS core network element is returned according to the position updating request, the location updating received message is used to indicate the SIP registration request for receiving the UE, and SIP registration is obtained according to the location updating received message and completes signaling, Xiang Suoshu eNB sends the SIP registration and completes signaling.
19. Such as the described in any item methods of claim 16-18, which is characterized in that in calling procedure, the method is specifically included:

    The agent equipment receives the sip request message of the creation session of user equipment (UE), session parameter is carried in the sip request message of the creation session, the sip request message of the creation session is converted into the connection management that the CS core network element is capable of handling and requests related signaling, connection management request related signaling is sent to the CS core network element；

    The agent equipment receives the radio access bearer RAB allocation request message that the CS core network element requests related signaling to return according to the connection management, is established according to the RAB allocation request message Voice bearer, and carrying is generated according to the RAB allocation request message and establishes request, request is established into the carrying and is sent to the MME；

    The agent equipment receives the carrying that the MME is returned after establishing request according to the carrying and being the VoLTE carrying that the agent equipment is established between the UE and establishes response, and the RAB assignment response message that response obtains the correspondence RAB allocation request message that the CS core network element is capable of handling is established according to the carrying, Xiang Suoshu CS core network element sends the RAB assignment response message of the corresponding RAB allocation request message；

    The agent equipment receives the connection message that the CS core network element returns, instruction session connection, which is obtained, according to the connection message establishes the SIP signaling completed, the instruction session connection, which is sent, to the UE by the eNB establishes the SIP signaling completed, and the UE for receiving the eNB forwarding corresponds to the instruction session connection and establishes the response signaling that the SIP signaling completed returns, the response message for the connection message that the CS core network element is capable of handling is obtained according to the response signaling that the SIP signaling completed is established in the instruction session connection, the response message of the connection message is returned to the CS core network element.
20. Method as claimed in claim 19, which is characterized in that

    After the agent equipment sends the RAB assignment response message of the corresponding RAB allocation request message to the CS core network element, receive the ALERTING message that the CS core network element is sent, the SIP signaling of the instruction called party to calling party playing RBT is sent to the UE by the eNB by the SIP signaling that the ALERTING message is converted to instruction called party to calling party playing RBT.
21. Method as claimed in claim 19, which is characterized in that

    After connection management request related signaling is sent to the CS core network element by the agent equipment, receive the message that the active calls that the CS core network element returns are being handled, the sip message of the instruction session progress is sent to the UE by the eNB by the sip message that the message that the active calls are being handled is converted to instruction session progress.
22. Such as the described in any item methods of claim 16-18, which is characterized in that in called flow, the method is specifically included:

    The agent equipment receives the paging message that the CS core network element is sent, and carries session parameter in the paging message, the session parameter carried in the paging message is obtained, by the session parameter It is sent to the MME, the MME is received according to the page response returned after session parameter paging to the UE, the MME page response returned is converted into the page response that the CS core network element is capable of handling, Xiang Suoshu CS core network element sends the page response that the CS core network element is capable of handling；

    The agent equipment receives the audio call that the CS core network element is sent and establishes request, the sip request message that request obtains creation session is established according to the audio call, the sip request message of the creation session is sent to the UE by the eNB, after the confirmation message for the sip request message for the creation session that the UE for receiving the eNB forwarding is returned, the audio call confirmation message that the CS core network element is capable of handling will be converted to for the confirmation message of the sip request message of the creation session, the audio call confirmation message is sent to the CS core network element；

    The agent equipment receives the radio access bearer RAB distribution request that the CS core network element is sent, voice bearer, which is established, according to the RAB distribution request obtains carrying foundation request, and the carrying is sent to the MME and establishes request, it receives the carrying that the MME is returned after establishing the VoLTE carrying that request is established between the UE and the agent equipment according to the carrying and establishes response, the RAB assignment response that response obtains the correspondence RAB distribution request that the CS core network element is capable of handling is established according to the carrying, the RAB assignment response of the corresponding RAB distribution request is sent to the CS core network element；

    After the agent equipment receives the connection confirmation message of the UE of the eNB forwarding, the connection confirmation message is converted into the connection message that the CS core network element is capable of handling, the connection message is sent to the CS core network element, after the response message for receiving the correspondence connection message that the CS core network element is sent, the SIP signaling of the instruction connection confirmation is sent to the UE by the eNB by the SIP signaling that the response message of the connection message is converted to instruction connection confirmation.
23. Method as claimed in claim 22, which is characterized in that

    After the agent equipment sends the RAB assignment response of the corresponding RAB distribution request to the CS core network element, receive the SIP signaling of the instruction called party to calling party playing RBT of the UE of the eNB forwarding, SIP Signalling conversion by the instruction called party to calling party playing RBT is the ALERTING message that the CS core network element is capable of handling, and the ALERTING message is sent to the CS core network element.
24. A kind of VoLTE service implementation method characterized by comprising

    The voice VoLTE based on long term evolution LTE that mobility management entity MME Receiving Agent equipment is sent carries related signaling, and the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；

    The MME carries related signaling to the VoLTE that the agent equipment sends user equipment (UE).
25. Method as claimed in claim 24, which is characterized in that the method also includes:

    The MME receives the authentication parameter that the agent equipment is sent；

    The MME generates the non access stratum NAS message for carrying the authentication parameter；

    The NAS message for carrying the authentication parameter is sent to the UE by the MME.
26. Method as claimed in claim 25, which is characterized in that the method also includes:

    The MME receives the carrying that the agent equipment is sent and establishes request；

    It is that the VoLTE that the agent equipment is established between the UE is carried that the MME, which establishes request according to the carrying,；

    The MME returns to carrying to the agent equipment and establishes response.
27. Method as claimed in claim 25, which is characterized in that method described in called flow specifically includes:

    The MME receives the session parameter that the agent equipment is sent, and carries in the paging message that the session parameter sends for the received CS core network element of the agent equipment；

    The MME is paged according to the session parameter to after the UE, and Xiang Suoshu agent equipment returns to page response, is received the carrying that the agent equipment is sent and is established request；

    The MME establishes the VoLTE that request is established between the UE and the agent equipment according to the carrying and carries, and Xiang Suoshu agent equipment returns to carrying and establishes response.
28. A kind of VoLTE service implementation method characterized by comprising

    The voice VoLTE based on long term evolution LTE that base station eNB Receiving Agent equipment is sent carries related signaling, and the VoLTE carrying related signaling is that the agent equipment obtains the CS voice bearer related signaling conversion of circuit commutative field CS core network element；

    The eNB carries related signaling to the VoLTE that agent equipment sends user equipment (UE).