CN114125993A - Call access processing method, network element, communication system and storage medium - Google Patents
Call access processing method, network element, communication system and storage medium Download PDFInfo
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Abstract
The present disclosure provides a call access processing method, an access control fusion network element, a communication system, and a storage medium, wherein the method includes: the access control fusion network element receives an initial call request message sent by a calling terminal or a final call request response message sent by a called terminal; the access control fusion network element adds a voice service type parameter in the initial call request message or the final call request response message according to the access network type information returned by the strategy control fusion network element; and the access control fusion network element sends the initial call request message or the final call request response message to the service call session control function so that the service call session control function performs corresponding service processing based on the voice service type parameters. The method, the network element, the communication system and the storage medium can distinguish call requests of VoLTE and 5G voice fallback, meet the requirements of distinguishing two different service scenes of VoLTE and 5G voice fallback, and realize the management of two different services.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a call access processing method, an access control convergence network element, a communication system, and a storage medium.
Background
At the initial stage of 5G SA deployment, the voice service of the 5G user will adopt the fallback 4G solution, i.e. the EPS fallback, 5G voice fallback to the VoLTE network will be mixed with the VoLTE service. The 5G voice fallback is different from VoLTE in network statistical indexes such as call completing rate, connection delay and the like due to relatively complex service flow, and the current network system cannot distinguish the two different service scenarios.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a call access processing method, an access control convergence network element, a communication system, and a storage medium.
According to a first aspect of the present disclosure, a call access processing method is provided, including: the access control fusion network element receives an initial call request message sent by a calling terminal or a final call request response message sent by a called terminal; the access control fusion network element applies for establishing a media bearer and acquires position information from a policy control fusion network element; the access control fusion network element adds a voice service type parameter in the initial call request message or the final call request response message according to the access network type information returned by the strategy control fusion network element; and the access control fusion network element sends the initial call request message or the final call request response message to a service call session control function so that the service call session control function performs corresponding service processing based on the voice service type parameter.
Optionally, the adding, by the access control convergence network element, the voice service type parameter in the origination request message or the terminating request response message according to the access network type information returned by the policy control convergence network element includes: the access control fusion network element receives an RAR message returned by the policy control fusion network element, and obtains a parameter value of an IP connectivity access network type parameter carried in the RAR message; acquiring the access network type information based on the parameter value of the IP connectivity access network type parameter; and the access control fusion network element sets the parameter value of the voice service type parameter added in the initial call request message or the final call request response message based on the parameter value of the IP connectivity access network type parameter.
Optionally, the parameter value of the IP connectivity access network type parameter includes: a 5G network and an evolved packet system, EPS, network; the parameter values of the voice service type parameters comprise: 5G voice fallback type, VoLTE type.
Optionally, the origination request message includes: an Invite message; adding a voice service type parameter to the origination request message comprises: and the Access control fusion Network element adds the voice service type parameter in the header field P-Access-Network-Info of the Invite message.
Optionally, the call termination request response message includes: 183 message; adding the voice service type parameter in the call termination request response message comprises the following steps: and the Access control fusion Network element adds the voice service type parameter in the header field P-Access-Network-Info of the 183 message.
Optionally, the IMS network forwards the terminating call request message to the called terminal; and the called terminal sends the terminal call request response message to the access control fusion network element.
Optionally, the access control converged network element includes: a proxy call session control function P-CSCF/edge access control equipment BAC fusion network element; the policy control convergence network element comprises: the policy control function PCF/policy and charging rules function PCRF merges the network elements.
According to a second aspect of the present disclosure, there is provided an access control converged network element, including: the message receiving module is used for receiving an initial call request message sent by a calling terminal or a final call request response message sent by a called terminal; the bearing application module is used for applying for establishing media bearing and acquiring position information from the strategy control fusion network element; a parameter adding module, configured to add a voice service type parameter to the origination request message or the terminating request response message according to access network type information returned by the policy control convergence network element; and the message sending module is used for sending the initial call request message or the final call request response message to a service call session control function so that the service call session control function performs corresponding service processing based on the voice service type parameter.
Optionally, the parameter adding module is specifically configured to receive an RAR message returned by the policy control fusion network element, and obtain a parameter value of an IP connectivity access network type parameter carried in the RAR message; acquiring the access network type information based on the parameter value of the IP connectivity access network type parameter; and setting the parameter value of the voice service type parameter added in the initial call request message or the final call request response message based on the parameter value of the IP connectivity access network type parameter.
Optionally, the parameter value of the IP connectivity access network type parameter includes: a 5G network and an evolved packet system, EPS, network; the parameter values of the voice service type parameters comprise: 5G voice fallback type, VoLTE type.
Optionally, the origination request message includes: an Invite message; the parameter adding module is further configured to add the voice service type parameter in a header field P-Access-Network-Info of the Invite message.
Optionally, the call termination request response message includes: 183 message; the parameter adding module is further configured to add the voice service type parameter to the header field P-Access-Network-Info of the 183 message.
Optionally, the access control converged network element includes: a proxy call session control function P-CSCF/edge access control equipment BAC fusion network element; the policy control convergence network element comprises: the policy control function PCF/policy and charging rules function PCRF merges the network elements.
According to a third aspect of the present disclosure, there is provided a communication system comprising: the access control fusion network element, the policy control fusion network element and the service call session control function are as described above; the service call session control function is provided with a service processing module used for carrying out corresponding service processing based on the voice service type parameter in the received initial call request message sent by the calling terminal or the received final call request response message sent by the called terminal.
Optionally, a service processing module is disposed in the application server, and configured to perform corresponding service processing based on a voice service type parameter in a received origination request message sent by the calling terminal or a received final call request response message sent by the called terminal.
According to a fourth aspect of the present disclosure, there is provided an access control converged network element, including: a memory; and a processor coupled to the memory, the processor configured to perform the method as described above based on instructions stored in the memory.
According to a fifth aspect of the present disclosure, there is provided a computer readable storage medium storing computer instructions for execution by a processor to perform the method as described above.
The access control fusion network element applies for establishing a media bearer and acquiring position information from a strategy control fusion network element, adds a voice service type parameter in an initial call request message or a final call request response message according to access network type information returned by the strategy control fusion network element, and network elements such as a service call session control function and the like can perform corresponding service processing based on the voice service type parameter; the call requests of VoLTE and 5G voice fallback can be distinguished, the requirements of distinguishing VoLTE and 5G voice fallback in two different service scenes are met, management of two different services is achieved, and the use experience of a user can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without inventive exercise.
Fig. 1 is a flow diagram of one embodiment of a call access processing method according to the present disclosure;
fig. 2 is a schematic flow chart illustrating adding a voice service type parameter in an embodiment of a call access processing method according to the present disclosure;
fig. 3 is a message interaction diagram of origination flow processing in an embodiment of a call access processing method according to the present disclosure;
fig. 4 is a message interaction diagram of a terminating flow process in one embodiment of a call access processing method according to the present disclosure;
fig. 5 is a block diagram of an embodiment of an access control convergence network element according to the present disclosure;
fig. 6 is a block diagram of one embodiment of a communication system according to the present disclosure;
fig. 7 is a block diagram of another embodiment of an access control convergence network element according to the present disclosure.
Detailed Description
The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
In the prior art, related protocols establish the flows of the initial call service and the final call service. In an initial Call request forwarded by a P-CSCF (Proxy Call Session Control function)/BAC (Border access Control device), or in a 183 message returned by a terminating service P-CSCF/BAC, PANI only carries wireless location information of a user, and for EPS Fallback and VoLTE services, the carried location information is the same, and it is impossible to distinguish whether the service is an EPS (Evolved Packet System) Fallback or VoLTE (Voice over Long Term Evolution Voice bearer) service, and it is impossible to distinguish service processing, statistics, and the like. The invention provides a call access processing method, which can distinguish VoLTE and 5G voice fallback and realize management of two different services.
Fig. 1 is a flowchart illustrating a call access processing method according to an embodiment of the present disclosure, as shown in fig. 1:
In one embodiment, the access control convergence network element comprises a P-CSCF/BAC convergence network element and the like, and the P-CSCF/BAC convergence network element simultaneously supports functions of a P-CSCF and a BAC. The policy control fusion network element comprises a PCF/PCRF fusion network element and the like, and the PCF/PCRF fusion network element simultaneously supports the functions of the PCF and the PCRF. The policy control convergence network element may use various existing methods to perform media bearer and acquire location information, and return the location information to the access control convergence network element.
And 103, the access control fusion network element adds the voice service type parameter in the initial call request message or the final call request response message according to the access network type information returned by the policy control fusion network element.
In one embodiment, the voice traffic Type parameter may be "IP-CAN-Type" or the like. For the EPS Fallback service, the value of the "IP-CAN-Type" is "3 GPP-5 GS", and for the VoLTE service, the value of the "IP-CAN-Type" is "3 GPP-EPS".
And step 104, the access control convergence network element sends the initial call request message or the final call request response message to the service call session control function, so that the service call session control function performs corresponding service processing based on the voice service type parameter.
In one embodiment, the S-CSCF (Serving-Call Session Control Function) determines whether the service is an EPS Fallback or VoLTE service according to a value of the "IP-CAN-Type" parameter, thereby performing requirements such as service differentiation processing and statistics. For 5G voice fallback and VoLTE type services, the S-CSCF can process using existing methods, respectively. Statistics, and the like.
Fig. 2 is a schematic flowchart of adding a voice service type parameter in an embodiment of a call access processing method according to the present disclosure, as shown in fig. 2:
In one embodiment, the IP connectivity access network Type parameter may be an IP-CAN-Type parameter, and the PCF/PCRF carries the IP-CAN-Type parameter in the returned location information. PCF/PCRF for EPS Fallback service (5G voice Fallback service), after finishing corresponding Fallback processing, sets the IP-CAN-Type parameter value carried in the RAR message to 3GPP-5GS, and indicates that the IP connectivity access network Type is a 5G network; for the VoLTE service, after the PCRF establishes corresponding bearing processing, the IP-CAN-Type parameter value carried in the RAR is set as 3GPP-EPS, and the Type of the IP connectivity access network is indicated as an EPS network.
In one embodiment, the origination request message includes: an Invite message, etc.; and the Access control fusion Network element adds the voice service type parameter in the header field P-Access-Network-Info of the Invite message.
Fig. 3 is a message interaction diagram of originating flow processing in an embodiment of the call access processing method according to the present disclosure, where a differentiation module may be added in network elements such AS P-CSCF/BAC1, S-CSCF1, and AS1 to implement functions such AS call service differentiation, AS shown in fig. 3:
in step 301, the UE initiates an origination request to P-CSCF/BAC 1.
Step 302-.
PCF/PCRF sets the IP-CAN-Type parameter value carried in RAR to 3GPP-5GS after completing corresponding Fallback processing for EPS Fallback service, and indicates that the Type of IP connectivity access network is 5G network; for the VoLTE service, after the PCRF establishes corresponding bearing processing, the IP-CAN-Type parameter value carried in the RAR is set as 3GPP-EPS, and the Type of the IP connectivity access network is indicated as an EPS network.
If the IP-CAN-Type parameter value carried in the RAR is 3GPP-5GS, setting the value of the voice service Type parameter IP-CAN-Type to be 3GPP-5GS, and indicating that the voice service Type is a 5G voice fallback Type; and if the IP-CAN-Type parameter value carried in the RAR is 3GPP-EPS, setting the value of the voice service Type parameter IP-CAN-Type to be 3GPP-EPS and indicating that the voice service Type is VoLTE Type.
Step 307 and 309, the other network element distinguishing modules such AS the S-CSCF1 and the application server AS1 judge that the call request is the initial call request of the 5G voice fallback Type or the VoLTE Type according to the parameter value of the "IP-CAN-Type" parameter, and perform the requirements of service distinguishing processing, statistics, and the like.
In one embodiment, the IMS network forwards the terminating request message to the called terminal, and the called terminal sends a terminating request response message to the access control convergence network element, where the terminating request response message includes 183 message and the like. And the Access control fusion Network element adds the voice service type parameter in the header field P-Access-Network-Info of the 183 message.
Fig. 4 is a message interaction diagram of a terminating flow process in an embodiment of the call access processing method according to the present disclosure, where a distinguishing module may be added in network elements such AS P-CSCF/BAC2, S-CSCF2, and AS2 to implement functions such AS call service distinguishing, AS shown in fig. 4:
step 401-.
Step 405 and 409, the P-CSCF/BAC2 receives the 183 message response of the UE, applies for the establishment of a media bearer to the PCF/PCRF, and obtains location information.
PCF/PCRF sets the IP-CAN-Type parameter value carried in RAR to 3GPP-5GS after completing corresponding Fallback processing for EPS Fallback service, and indicates that the Type of IP connectivity access network is 5G network; for the VoLTE service, after the PCRF establishes corresponding bearing processing, the IP-CAN-Type parameter value carried in the RAR is set as 3GPP-EPS, and the Type of the IP connectivity access network is indicated as an EPS network.
Step 410, the P-CSCF/BAC2 returns 183 message response to the S-CSCF2, and adds a parameter 'IP-CAN-Type', namely a voice service Type parameter, in the header field P-Access-Network-Info of the 183 message according to the position information returned by the PCF/PCRF.
If the IP-CAN-Type parameter value carried in the RAR is 3GPP-5GS, setting the value of the voice service Type parameter IP-CAN-Type to be 3GPP-5GS, and indicating that the voice service Type is a 5G voice fallback Type; and if the IP-CAN-Type parameter value carried in the RAR is 3GPP-EPS, setting the value of the voice service Type parameter IP-CAN-Type to be 3GPP-EPS and indicating that the voice service Type is VoLTE Type.
In step 411 and 413, other network elements such AS the S-CSCF2 and the AS2 determine that the call request is a call request of a 5G voice fallback Type or a VoLTE Type according to the parameter value of the "IP-CAN-Type" parameter, and perform the requirements of service differentiation processing, statistics, and the like.
The P-CSCF/BAC adds a voice service Type parameter 'IP-CAN-Type' in a header field P-Access-Network-Info of a 183 message of an initial call request or a final call according to the position information returned by the PCF/PCRF; for EPS Fallback service, namely 5G voice Fallback service, the P-CSCF/BAC sets the value of a voice service Type parameter IP-CAN-Type to be 3GPP-5GS, and indicates that the voice service Type is 5G voice Fallback Type; for the VoLTE service, the P-CSCF/BAC sets the value of the voice service Type parameter 'IP-CAN-Type' to be '3 GPP-EPS', and indicates that the voice service Type is the VoLTE Type.
And judging that the call request is a call request of a 5G voice fallback Type or a VoLTE service Type by other network elements such AS the S-CSCF and the AS according to the parameter value of the voice service Type parameter IP-CAN-Type, so AS to carry out requirements on service distinguishing processing, statistics and the like.
In one embodiment, as shown in fig. 5, the present disclosure provides an access control converged network element 50, including: a message receiving module 51, a bearer application module 52, a parameter adding module 53 and a message sending module 54. The message receiving module 51 receives an origination request message sent by a calling terminal or a terminating request response message sent by a called terminal. The bearer application module 52 applies for establishing a media bearer and obtains location information from the policy control convergence network element. The access control fusion network element can be a P-CSCF/BAC fusion network element and the like, and the strategy control fusion network element comprises a PCF/PCRF fusion network element and the like.
The parameter adding module 53 adds the voice service type parameter in the initial call request message or the final call request response message according to the access network type information returned by the policy control convergence network element. The message sending module 54 sends the origination request message or the terminating request response message to the serving call session control function, so that the serving call session control function performs corresponding service processing based on the voice service type parameter.
In an embodiment, the parameter adding module 53 receives an RAR message returned by the policy control fusion network element, and obtains a parameter value of an IP connectivity access network type parameter carried in the RAR message; the access network type information is a parameter value of an IP connectivity access network type parameter. The parameter adding module 53 sets the parameter value of the voice service type parameter added in the origination request message or the terminating request response message based on the parameter value of the IP connectivity access network type parameter. The parameter values of the IP connectivity access network type parameters comprise a 5G network and an EPS network; the parameter values of the voice service type parameters comprise a 5G voice fallback type and a VoLTE type.
The origination request message comprises an Invite message; the parameter adding module 53 adds the voice service type parameter in the header field P-Access-Network-Info of the Invite message. The call termination request response message includes a 183 message; the parameter adding module 53 adds the voice service type parameter in the header field P-Access-Network-Info of the 183 message.
In one embodiment, as shown in fig. 6, the present disclosure provides a communication system comprising: the access control convergence network element 62, the policy control convergence network element 61, the serving call session control function 63 and the application server 64 as in any of the above embodiments. The communication system may be a 5G communication system.
The service call session control function 63 is provided with a service processing module, which is used for performing corresponding service processing based on the received voice service type parameters in the initial call request message sent by the calling terminal or the final call request response message sent by the called terminal.
The application server 64 is provided with a service processing module for performing corresponding service processing based on the received voice service type parameter in the initial call request message sent by the calling terminal or the final call request response message sent by the called terminal.
Fig. 7 is a block diagram of an access control convergence network element according to another embodiment of the disclosure. As shown in fig. 7, the apparatus may include a memory 71, a processor 72, a communication interface 73, and a bus 74. The memory 71 is used for storing instructions, the processor 72 is coupled to the memory 71, and the processor 72 is configured to execute the call access processing method based on the instructions stored in the memory 71.
The memory 71 may be a high-speed RAM memory, a non-volatile memory (non-volatile memory), or the like, and the memory 71 may be a memory array. The storage 71 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules. The processor 72 may be a central processing unit CPU, or an application Specific Integrated circuit asic, or one or more Integrated circuits configured to implement the call access processing methods of the present disclosure.
In one embodiment, the present disclosure provides a computer-readable storage medium storing computer instructions for a processor to perform a call admission processing method as in any of the above embodiments.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
In the call access processing method, the access control convergence network element, the communication system, and the storage medium in the above embodiments, the access control convergence network element applies for establishing a media bearer and acquiring location information from the policy control convergence network element, and adds a voice service type parameter to an initial call request message or a final call request response message according to access network type information returned by the policy control convergence network element, and network elements such as a service call session control function can perform corresponding service processing based on the voice service type parameter; the call requests of VoLTE and 5G voice fallback can be distinguished, the requirements of distinguishing VoLTE and 5G voice fallback in two different service scenes are met, two different services are processed and counted, management of the two different services is achieved, and the use experience of a user can be improved.
The method and system of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (17)
1. A call access processing method comprises the following steps:
the access control fusion network element receives an initial call request message sent by a calling terminal or a final call request response message sent by a called terminal;
the access control fusion network element applies for establishing a media bearer and acquires position information from a policy control fusion network element;
the access control fusion network element adds a voice service type parameter in the initial call request message or the final call request response message according to the access network type information returned by the strategy control fusion network element;
and the access control fusion network element sends the initial call request message or the final call request response message to a service call session control function so that the service call session control function performs corresponding service processing based on the voice service type parameter.
2. The method of claim 1, wherein the adding, by the access control convergence network element, the voice service type parameter in the origination request message or the terminating request response message according to the access network type information returned by the policy control convergence network element comprises:
the access control fusion network element receives an RAR message returned by the policy control fusion network element, and obtains a parameter value of an IP connectivity access network type parameter carried in the RAR message; acquiring the access network type information based on the parameter value of the IP connectivity access network type parameter;
and the access control fusion network element sets the parameter value of the voice service type parameter added in the initial call request message or the final call request response message based on the parameter value of the IP connectivity access network type parameter.
3. The method of claim 2, wherein,
the parameter values of the IP connectivity access network type parameters include: a 5G network and an evolved packet system, EPS, network;
the parameter values of the voice service type parameters comprise: 5G voice fallback type, VoLTE type.
4. The method of claim 2, wherein the origination request message comprises: an Invite message; adding a voice service type parameter to the origination request message comprises:
and the Access control fusion Network element adds the voice service type parameter in the header field P-Access-Network-Info of the Invite message.
5. The method of claim 2, wherein the terminating request response message comprises: 183 message; adding the voice service type parameter in the call termination request response message comprises the following steps:
and the Access control fusion Network element adds the voice service type parameter in the header field P-Access-Network-Info of the 183 message.
6. The method of claim 1, further comprising:
the IMS network forwards the terminal call request message to the called terminal;
and the called terminal sends the terminal call request response message to the access control fusion network element.
7. The method of any one of claims 1 to 6,
the access control fusion network element comprises: a proxy call session control function P-CSCF/edge access control equipment BAC fusion network element; the policy control convergence network element comprises: the policy control function PCF/policy and charging rules function PCRF merges the network elements.
8. An access control convergence network element, comprising:
the message receiving module is used for receiving an initial call request message sent by a calling terminal or a final call request response message sent by a called terminal;
the bearing application module is used for applying for establishing media bearing and acquiring position information from the strategy control fusion network element;
a parameter adding module, configured to add a voice service type parameter to the origination request message or the terminating request response message according to access network type information returned by the policy control convergence network element;
and the message sending module is used for sending the initial call request message or the final call request response message to a service call session control function so that the service call session control function performs corresponding service processing based on the voice service type parameter.
9. The access control convergence network element of claim 8 wherein,
the parameter adding module is specifically configured to receive an RAR message returned by the policy control fusion network element, and acquire a parameter value of an IP connectivity access network type parameter carried in the RAR message; acquiring the access network type information based on the parameter value of the IP connectivity access network type parameter; and setting the parameter value of the voice service type parameter added in the initial call request message or the final call request response message based on the parameter value of the IP connectivity access network type parameter.
10. The access control convergence network element of claim 9, wherein,
the parameter values of the IP connectivity access network type parameters include: a 5G network and an evolved packet system, EPS, network;
the parameter values of the voice service type parameters comprise: 5G voice fallback type, VoLTE type.
11. The access control convergence network element of claim 9 wherein the origination request message comprises: an Invite message;
the parameter adding module is further configured to add the voice service type parameter in a header field P-Access-Network-Info of the Invite message.
12. The access control converged network element of claim 9, wherein the terminating request response message comprises: 183 message;
the parameter adding module is further configured to add the voice service type parameter to the header field P-Access-Network-Info of the 183 message.
13. The access control convergence network element of any one of claims 8 to 12 wherein,
the access control fusion network element comprises: a proxy call session control function P-CSCF/edge access control equipment BAC fusion network element; the policy control convergence network element comprises: the policy control function PCF/policy and charging rules function PCRF merges the network elements.
14. A communication system, comprising:
the access control convergence network element, the policy control convergence network element and the serving call session control function of any one of claims 8 to 13;
the service call session control function is provided with a service processing module used for carrying out corresponding service processing based on the voice service type parameter in the received initial call request message sent by the calling terminal or the received final call request response message sent by the called terminal.
15. The system of claim 14, further comprising:
an application server; and the application server is provided with a service processing module for carrying out corresponding service processing based on the received voice service type parameters in the initial call request message sent by the calling terminal or the final call request response message sent by the called terminal.
16. An access control convergence network element, comprising:
a memory; and a processor coupled to the memory, the processor configured to perform the method of any of claims 1-7 based on instructions stored in the memory.
17. A computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of any one of claims 1 to 7.
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