CN110505356B - Call establishment method and call establishment system - Google Patents

Call establishment method and call establishment system Download PDF

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Publication number
CN110505356B
CN110505356B CN201910789463.3A CN201910789463A CN110505356B CN 110505356 B CN110505356 B CN 110505356B CN 201910789463 A CN201910789463 A CN 201910789463A CN 110505356 B CN110505356 B CN 110505356B
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call
party
function node
terminal
request
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CN110505356A (en
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张伦泳
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • H04M7/0066—Details of access arrangements to the networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • H04M7/0078—Security; Fraud detection; Fraud prevention
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present disclosure provides a call establishment method and a call establishment system, including: receiving a three-party call establishment request sent by a calling terminal; sending application layer session identification of the two-party call to a calling terminal according to the three-party call establishment request, and sending a 5G core network access request to a non-3GPP access function node; receiving authentication result information sent by a non-3GPP access function node after authentication is carried out according to a 5G core network access request; if the authentication result information comprises access confirmation information, performing access 3GPP network operation on the non-3GPP access function node, and returning an access confirmation response to the non-3GPP access function node; sending a three-party call association request to a second session management function node through a first session management function node; and receiving the three-party call establishment message forwarded from the second session management function node by the first session management function node. The technical scheme of the invention can realize that a standard telephone is added to form a three-party call on the basis of two-party call based on the application program of the mobile terminal.

Description

Call establishment method and call establishment system
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a call establishment method and a call establishment system.
Background
With the development of information technology, video or voice calls based on mobile terminal applications are commonly used. Meanwhile, the call made by the user through the mobile terminal application is independent from the traditional call made based on the mobile communication network, the two call modes cannot coexist, the multi-party call of the intelligent application and the standard telephone existing in the call participants at the same time cannot be realized, the call experience of the user is reduced, and inconvenience is brought to the user.
Disclosure of Invention
The present disclosure is directed to at least one of the technical problems in the prior art, and provides a call establishment method and a call establishment system.
In order to achieve the above object, an embodiment of the present disclosure provides a call establishment method, including:
receiving a three-party call establishment request sent by a calling terminal, wherein the calling terminal is one party of the current two-party call, and the three-party call establishment request comprises the following steps: the user number of the calling terminal;
sending application layer session identification of the two-party call to the calling terminal according to the three-party call establishment request, and sending a 5G core network access request to a non-3GPP access function node;
receiving authentication result information sent by the non-3GPP access function node after authentication is carried out according to the 5G core network access request;
if the authentication result information comprises access confirmation information, performing 3GPP network access operation with the non-3GPP access function node, and returning an access confirmation response to the non-3GPP access function node, so that the non-3GPP access function node can point the session connection relation of the video communication server in the 5G core network to the first session management function node;
sending a three-party call association request to a second session management function node through the first session management function node, so that the second session management function node associates the calling terminal, the participant terminal and the called terminal according to the three-party call association request and calls the called terminal, wherein the three-party call association request comprises: the application layer session identification of the two-party conversation and the user number of the calling terminal, and the participating terminal is the other party of the two-party conversation;
and receiving the three-party call establishment message forwarded from the second session management function node by the first session management function node.
In some embodiments, the three-way call setup request further comprises: call suspend information for the two-party call;
before the step of sending the 5G core network access request to the non-3GPP access function node, the method further includes: suspending the two-party call;
after the step of receiving the three-way call setup message forwarded by the first session management function node from the second session management function node, the method further includes:
and sending the call recovery information aiming at the two-party call to the participating terminal, and sending the call disconnection information aiming at the two-party call to the calling terminal.
In some embodiments, the 5G core network access request comprises: server description information of the video communication server;
the authentication process of the non-3GPP access function node according to the 5G core network access request is as follows:
sending an authentication request to a unified data management node, wherein the authentication request comprises: the server description information;
and receiving and forwarding the authentication result information sent by the unified data management node to a video communication server.
In order to achieve the above object, an embodiment of the present disclosure further provides a call establishment method, including:
receiving a three-party call request sent by a calling terminal, wherein the three-party call request comprises: the application layer session identification of the current two-party conversation and the user number of the called terminal;
receiving a three-party call association request sent by a video communication server through a first session management function node, and associating the calling terminal, the participating terminal and the called terminal according to the three-party call association request, wherein the three-party call association request comprises: the application layer session identification of the two-party conversation and the user number of the calling terminal, and the participating terminal is the other party of the two-party conversation;
calling the called terminal through a 5G core network, and sending a three-way call establishment message to the calling terminal, so that the calling terminal calls a corresponding application program according to the three-way call establishment message to establish a three-way call among the calling terminal, the participating terminal and the called terminal;
and sending the three-way call establishment message to the video communication server through the first session management function node.
In order to achieve the above object, an embodiment of the present disclosure further provides a call establishment method, including:
acquiring a user number of a called terminal;
sending a three-party call establishment request to a video communication server, and receiving an application layer session identifier of a current two-party call sent by the video communication server, wherein the three-party call establishment request comprises: a subscriber number of the calling terminal;
sending a three-way call request to a second session management function node, the three-way call request comprising: the application layer session identification of the two-party conversation and the user number of the called terminal;
and receiving a three-party call establishment message sent by the second session management function node, calling a corresponding application program according to the three-party call establishment message, and establishing a three-party call among the calling terminal, the participant terminal and the called terminal.
To achieve the above object, an embodiment of the present disclosure provides a video communication server, including:
the first receiving module is used for receiving a three-party call establishment request sent by a calling terminal, wherein the calling terminal is a party of the current two-party call, and the three-party call establishment request comprises: the user number of the calling terminal;
the first sending module is used for sending the application layer session identification of the two-party call to the calling terminal according to the three-party call establishment request and sending a 5G core network access request to a non-3GPP access function node;
a second receiving module, configured to receive authentication result information sent by the non-3GPP access functional node after performing authentication according to the 5G core network access request;
an access module, configured to perform, when the authentication result information includes access confirmation information, an access 3GPP network access operation with the non-3GPP access function node, and return an access confirmation response to the non-3GPP access function node, so that the non-3GPP access function node points a session connection relationship of the video communication server in the 5G core network to the first session management function node;
a second sending module, configured to send a three-way call association request to a second session management function node through the first session management function node, so that the second session management function node associates the calling terminal, the participant terminal, and the called terminal according to the three-way call association request, and calls the called terminal, where the three-way call association request includes: the application layer session identification of the two-party conversation and the user number of the calling terminal, and the participating terminal is the other party of the two-party conversation;
and the third receiving module is used for receiving the three-party call establishment message forwarded by the first session management function node from the second session management function node.
In some embodiments, the three-way call setup request further comprises: call suspend information for the two-party call;
the first receiving module includes:
a suspending unit for suspending the two-party call;
the third receiving module includes:
and the sending unit is used for sending the call recovery information aiming at the two-party call to the participating terminal and sending the call disconnection information aiming at the two-party call to the calling terminal.
In some embodiments, the 5G core network access request comprises: server description information of the video communication server.
To achieve the above object, an embodiment of the present disclosure provides a session management function node, including:
a fourth receiving module, configured to receive a three-way call request sent by a calling terminal, where the three-way call request includes: the application layer session identification of the current two-party conversation and the user number of the called terminal;
the association module is used for receiving a three-party call association request sent by a video communication server through a first session management function node, and associating the calling terminal, the participant terminal and the called terminal according to the three-party call association request, wherein the three-party call association request comprises: the application layer session identification of the two-party conversation and the user number of the calling terminal, and the participating terminal is the other party of the two-party conversation;
the calling module is used for calling the called terminal through a 5G core network and sending a three-way call establishment message to the calling terminal so that the calling terminal can call a corresponding application program according to the three-way call establishment message to establish three-way calls among the calling terminal, the participating terminal and the called terminal;
and the third sending module is used for sending the three-party call establishment message to the video communication server through the first session management function node.
In order to achieve the above object, an embodiment of the present disclosure provides a communication terminal, including:
the acquisition module is used for acquiring the user number of the called terminal;
a fourth sending module, configured to send a three-way call establishment request to a video communication server, and receive an application layer session identifier of a current two-way call sent by the video communication server, where the three-way call establishment request includes: a subscriber number of the calling terminal;
a fifth sending module, configured to send a three-way call request to a second session management function node, where the three-way call request includes: the application layer session identification of the two-party conversation and the user number of the called terminal;
and the fifth receiving module is used for receiving the three-party call establishment message sent by the second session management function node, calling a corresponding application program according to the three-party call establishment message, and establishing the three-party call among the calling terminal, the participant terminal and the called terminal.
In order to achieve the above object, an embodiment of the present disclosure provides a call establishment system, including: the system comprises a video communication server, a session management function node and a communication terminal;
wherein, the video communication server adopts the video communication server in any one of the previous embodiments; the session management function node adopts the session management function node in the embodiment; the communication terminal adopts the communication terminal in the foregoing embodiment.
The present disclosure has the following beneficial effects:
the embodiment of the disclosure provides a call establishing method and a call establishing system, which can add a standard phone and realize three-way call of different call carriers on the basis of existing two-way call based on a mobile terminal application program in a 5G network, thereby improving the call experience of users.
Drawings
Fig. 1 is a flowchart of a call establishment method according to an embodiment of the present disclosure;
fig. 2 is a flowchart of another call establishment method provided in the embodiment of the present disclosure;
fig. 3 is a flowchart of another call establishment method provided in the embodiment of the present disclosure;
fig. 4 is a flowchart of another call establishment method according to an embodiment of the present disclosure;
fig. 5 is a signaling diagram of still another call setup method according to an embodiment of the present disclosure;
fig. 6 is a block diagram of a video communication server according to an embodiment of the present disclosure;
fig. 7 is a block diagram of a session management function node according to an embodiment of the present disclosure;
fig. 8 is a block diagram of a communication terminal according to an embodiment of the present disclosure;
fig. 9 is a block diagram of a call setup system according to an embodiment of the present disclosure.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present disclosure, the following describes the call establishment method and the call establishment system provided in the present disclosure in detail with reference to the accompanying drawings.
The call establishing method and the call establishing system provided by the disclosure can be used for adding a standard telephone and establishing a three-party call in a 5G network on the basis of the existing two-party call based on the application program of the mobile terminal.
Fig. 1 is a flowchart of a call establishment method according to an embodiment of the present disclosure. As shown in fig. 1, the call establishment method includes:
step S1, a three-party call establishment request sent by a calling terminal is received.
In step S1, the calling terminal is a party of the current two-party call, and the three-party call establishment request includes: the subscriber number of the calling terminal.
The current two-party call is based on an application program on the terminal, and the application program in the calling terminal does not adopt data connection based on a mobile communication network, such as WIFI connection. The subscriber number may be a telephone number of the corresponding terminal.
In practical application, the application program in the calling terminal can send a three-party call establishment request to the video communication server, and interact with the other party of the current two-party call, namely the application program in the participating terminal, so as to determine that the three-party call is to be established currently.
Step S2, sending an application layer session identifier of the two-party call to the calling terminal according to the three-party call establishment request, and sending a 5G Core Network (5G Core Network, abbreviated as 5GC) access request to a Non-3GPP access Function node (Non-3GPP Interworking Function, abbreviated as N3 IWF).
In practical applications, the application layer session identifier may be sent to the calling terminal by an application program in the calling terminal.
Step S3, receiving authentication result information sent by the non-3GPP access function node after authentication according to the 5G core network access request.
In step S3, the description of the process that the non-3GPP access function node performs authentication according to the 5G core network access request may refer to the following embodiments. The authentication process is a process for verifying whether the video communication server opens the three-way call service.
Wherein, the authentication result information may include: access confirmation information or access failure information, and when the authentication result information comprises the access confirmation information, the authentication is passed; otherwise, when the authentication result information includes the access failure information, it indicates that the authentication is not passed.
Step S4, if the authentication result information includes the access confirmation information, performing an operation of accessing the 3GPP network with the non-3GPP access function node, and returning an access confirmation response to the non-3GPP access function node.
In step S4, an access confirmation response is returned to the non-3GPP access Function node, so that the non-3GPP access Function node directs the Session connection relationship of the video communication server in the 5G core network to the first Session Management Function node (SMF).
If the authentication result information includes access failure information, it indicates that the video communication server does not open the three-party call service, and the process is ended.
Wherein, the session connection relation of the video communication server in the 5G core network is pointed to the first session management function node, that is, the session service of the video communication server in the 5G core network is provided by the first session management function node.
And step S5, sending a three-way call association request to a second session management function node through the first session management function node.
In step S5, the first session management function node sends a three-way call association request to the second session management function node, so that the second session management function node associates the calling terminal, the participant terminal, and the called terminal according to the three-way call association request, and calls the called terminal.
Wherein the three-party call association request comprises: the participating terminal is the other party of the double-party call.
The second session management function node confirms the current two-party call and the participating terminal by comparing the application layer session identification with the user number of the calling terminal, and confirms the identity information of all three parties in the three-party call through the user number of the called terminal acquired from the calling terminal before.
In practical application, the called terminal, as one party in the three-party call, may be a standard telephone terminal supporting 5G.
In practical application, after acquiring the user number of the called terminal from the calling terminal, the second session management function node may also call the called terminal, wait for a three-party call association request, receive the three-party call association request, associate the calling terminal, the participant terminal and the called terminal, and then send a three-party call establishment message.
And step S6, receiving the three-way call establishment message forwarded by the first session management function node from the second session management function node.
Wherein the three-way call setup message indicates that the called terminal has been called.
In practical application, the received three-party call establishment message can indicate that the three-party session relationship is established among the application programs in the calling terminal, the participant terminal and the called terminal. The video communication server is responsible for completing adaptation of the 3GPP standard audio and video communication signaling, and provides relay forwarding of audio and video streams for application programs in the participating terminals. It should be noted that the original audio and video communication signaling can still be used between the video communication server and the application program in the participant terminal.
The embodiment of the disclosure provides a call establishing method, which can be used for accessing a 3GPP network through a non-3GPP access function node, and realizing that a standard telephone is added as a third party in a two-party call based on an application program and a non-mobile communication network connection mode to form a three-party call.
Fig. 2 is a flowchart of another call establishment method according to an embodiment of the present disclosure. As shown in fig. 2, the call establishing method includes steps S1 to S6 in the above embodiment, and further includes step S1a, step S2a, step S2b and step S6a, and only step S1a, step S2a, step S2b and step S6a are described in detail below.
In some embodiments, the three-way call setup request further comprises: call suspend information for a double-talk call.
In practical applications, the three-way call establishment request may further include: the call suspension reason is made clear by attempting to establish suspension reason information for a three-party call across systems.
Before step S2, the method further includes: step S1 a.
And step S1a, suspending the double-party call.
In practical applications, after the suspend operation for the double-talk is completed, the application program in the calling terminal may send a message that the session is suspended to the calling terminal, and at the same time, the application program in the calling terminal completes the step of sending the application layer session identifier in step S2.
Meanwhile, as mentioned in step S1, the application program in the calling terminal may send a three-way call establishment request to the video communication server, and when the three-way call establishment request further includes call suspension information for a two-way call, the suspension operation is initiated by the application program in the calling terminal instead of the calling terminal, which is beneficial to the calling terminal and the application program in the calling terminal to complete the operation state synchronization in a relatively simple operation manner.
After step S6, the method further includes: step S6 a.
And step S6a, sending the call recovery information aiming at the double-party call to the participating terminal, and sending the call disconnection information aiming at the double-party call to the calling terminal.
In practical application, the video communication server is responsible for completing adaptation of 3GPP standard audio/video communication signaling, and meanwhile, the original audio/video communication signaling can still be adopted between the video communication server and an application program in a participating terminal, so that corresponding call disconnection and call recovery are carried out on the basis of the original audio/video communication signaling.
In some embodiments, the 5G core network access request comprises: server description information of the video communication server.
In practical applications, the server description information may include: the provider of the video communication server, location description information of the video communication server, and virtual address information of the video communication server.
In step S2, the process of the non-3GPP access function node performing authentication according to the 5G core network access request is as follows:
step S2a, the non-3GPP access function node sends an authentication request to a Unified Data Management (UDM).
In step S2a, the authentication request includes: server description information of the video communication server.
And step S2b, the non-3GPP access function node receives and forwards the authentication result information sent by the unified data management node to the video communication server.
The disclosed embodiment provides a call establishment method, which can be used for suspending the current two-party call after receiving a three-party call establishment request, accessing a 5G core network after passing authentication, and then performing corresponding adaptation on a 3GPP standard audio/video communication signaling, thereby completing the establishment of the three-party call.
Fig. 3 is a flowchart of another call setup method according to an embodiment of the present disclosure. As shown in fig. 3, the call establishment method includes:
and step S7, receiving a three-party call request sent by the calling terminal.
Wherein the three-way call request comprises: the application layer session identification of the current two-party conversation and the user number of the called terminal.
In practical applications, the three-way call request may further include: to mark call type parameters that attempt to establish a three-way call.
And step S8, receiving a three-party call association request sent by the video communication server through the first session management function node, and associating the calling terminal, the participant terminal and the called terminal according to the three-party call association request.
Wherein the three-party call association request comprises: the participating terminal is the other party of the double-party call.
Comparing the application layer session identifiers obtained in the steps S7 and S8, and confirming the current two-party call and the participating terminals according to the user number of the calling terminal, so as to confirm the identity information of all three parties in the three-party call by combining the user number of the called terminal obtained from the calling terminal in the step S7.
In practical applications, as mentioned in step S5, after the user number of the called terminal is obtained from the calling terminal, the called terminal may be called first, and while waiting for the response of the called terminal, a three-way call association request is waited, and after receiving the three-way call association request and associating the calling terminal, the participant terminal, and the called terminal, a three-way call establishment message is sent to the calling terminal and the video communication server.
And step S9, calling the called terminal through the 5G core network, and sending a three-way call establishment message to the calling terminal.
In step S9, the called terminal is called through the 5G core network, and a three-way call establishment message is sent to the calling terminal, so that the calling terminal invokes a corresponding application program according to the three-way call establishment message to establish a three-way call among the calling terminal, the participant terminal, and the called terminal.
In practical application, after receiving the call information, the called terminal returns call confirmation information to the second session management function node, and answers the call to confirm whether to perform a connection operation or a rejection operation on the current call.
And step S10, sending a three-way call establishment message to the video communication server through the first session management function node.
In practical application, the three-party conversation establishing message is sent to indicate that the three-party conversation relationship is established among the calling terminal, the participating terminal and the called terminal.
The embodiment of the disclosure provides a call establishing method, which can be used for receiving session information sent by a calling terminal and a video communication server respectively, confirming identity information of all three parties after comparison, associating the identity information, and calling a called terminal to establish a three-party call.
Fig. 4 is a flowchart of another call establishment method according to an embodiment of the present disclosure. As shown in fig. 4, the call establishment method includes:
and step S11, acquiring the user number of the called terminal.
In practical application, when a user tries to establish a three-way call, the following operations can be performed through the operation interface: lightly touching the current call interface to call out an operation button group, wherein the operation button group comprises a button for initiating three-party call; clicking a 'three-party call initiating' button to generate a 'called user type' option, wherein the option comprises a 'standard telephone' option; and clicking a standard telephone option, sending a call type parameter to a dial plate of the calling terminal by the application program at the moment, marking the call type which is attempted to be established as a three-party call, and calling the dial plate. After the user inputs the user number of the corresponding called terminal, the acquiring step is completed, i.e., the step S11 is completed.
Step S12, sending a three-party call establishment request to the video communication server, and receiving the application layer session identification of the current two-party call sent by the video communication server.
The three-party call establishment request comprises the following steps: the subscriber number of the calling terminal.
In practical applications, as mentioned in step S1, the three-way call establishment request may be sent to the video communication server by an application program in the calling terminal; as mentioned in step S2, the application-layer session identification may be sent to the calling terminal by an application within the calling terminal.
And step S13, sending a three-way call request to the second session management function node.
Wherein the three-way call request comprises: the application layer session identification of the two-party conversation and the user number of the called terminal.
And step S14, receiving a three-way call establishment message sent by the second session management function node, calling a corresponding application program according to the three-way call establishment message, and establishing a three-way call among the calling terminal, the participant terminal and the called terminal.
The embodiment of the disclosure provides a call establishing method, which can be used for interacting with a video communication server and a second session management function node after acquiring a user number of a called terminal to complete the establishment of a three-party call.
Fig. 5 is a signaling diagram of another call setup method according to an embodiment of the disclosure. As shown in fig. 5, the call establishment method includes:
BZ01, the calling terminal obtains the user number of the called terminal.
The BZ101 and the calling terminal send a three-way call establishment request to the video communication server, wherein the three-way call establishment request comprises a user number of the calling terminal, call suspension information aiming at two-party call and suspension reason information for determining that the call suspension reason is the attempt to establish cross-system three-way call.
The BZ102, the video communication server, suspends the double-talk and interacts with the calling terminal and the participant terminal (not shown in fig. 5).
The BZ201 and the video communication server send application layer session identification of both-party conversation to the calling terminal.
The BZ202 and the video communication server send a 5G core network access request to the non-3GPP access function node, wherein the 5G core network access request comprises server description information of the video communication server.
BZ3, the calling terminal sends a three-way call request to the second session management function node, wherein the three-way call request comprises the application layer session identification of the two-party conversation and the user number of the called terminal.
BZ4, the non-3GPP access function node sends an authentication request to the unified data management node, wherein the authentication request comprises the server description information of the video communication server.
BZ5, the unified data management node sends authentication result information to the video communication server through the non-3GPP access function node.
If the authentication result information includes the access confirmation information, the BZ6 performs an operation of accessing the 3GPP network by the video communication server and the non-3GPP access function node, and returns an access confirmation response to the non-3GPP access function node, and the non-3GPP access function node directs the session connection relationship of the video communication server in the 5G core network to the first session management function node (not shown in fig. 5).
The BZ7 and the video communication server send a three-way call association request to a second session management function node through a first session management function node, wherein the three-way call association request comprises application layer session identification of both-side conversation and a user number of a calling terminal.
The BZ8, the second session management function node, associates the calling terminal, the participating terminal and the called terminal.
The BZ901 and the second session management function node make a call to the called terminal through the 5G core network, and then the called terminal responds to the call (not shown in fig. 5).
BZ902 and the second session management function node send the three-party call establishment information to the calling terminal.
BZ10, the second session management function node sends the three-way call establishment information to the video communication server via the first session management function node.
The BZ1101 and the video communication server send call resumption information for the double-talk to the participant terminal.
The BZ1102 and the video communication server send call disconnection information aiming at the two-party call to the calling terminal.
BZ12, the calling terminal calls the corresponding application program to establish a three-way call (not shown in figure 5) among the calling terminal, the participating terminal and the called terminal.
Fig. 6 is a block diagram of a video communication server according to an embodiment of the present disclosure. As shown in fig. 6, the video communication server can be used to implement the call establishment method provided in the foregoing embodiment. The video communication server includes: the system comprises a first receiving module 1, a first sending module 2, a second receiving module 3, an access module 4, a second sending module 5 and a third receiving module 6.
The first receiving module 1 is configured to receive a three-party call establishment request sent by a calling terminal.
The calling terminal is a party of the current two-party call, and the three-party call establishment request comprises the following steps: the subscriber number of the calling terminal.
And the first sending module 2 is used for sending the application layer session identifier of the two-party call to the calling terminal according to the three-party call establishment request and sending a 5G core network access request to the non-3GPP access function node.
And the second receiving module 3 is configured to receive authentication result information sent by the non-3GPP access function node after performing authentication according to the 5G core network access request.
And the access module 4 is configured to, when the authentication result information includes access confirmation information, perform an access 3GPP network operation with the non-3GPP access function node, and return an access confirmation response to the non-3GPP access function node, so that the non-3GPP access function node directs the session connection relationship of the video communication server in the 5G core network to the first session management function node.
And the second sending module 5 is configured to send the three-party call association request to the second session management function node through the first session management function node, so that the second session management function node associates the calling terminal, the participant terminal, and the called terminal according to the three-party call association request, and calls the called terminal.
Wherein the three-party call association request comprises: the application layer session identification of the two-party conversation and the user number of the calling terminal, and the participating terminal is the other party of the two-party conversation.
And a third receiving module 6, configured to receive the triple-party call setup message forwarded by the first session management function node from the second session management function node.
In some embodiments, the three-way call setup request further comprises: call suspend information for a double-talk call.
The first receiving module includes: the unit 1a is suspended.
And a suspending unit 1a for suspending the double-talk.
The third receiving module 6 includes: and a transmitting unit 6 a.
A sending unit 6a, configured to send call recovery information for the double-talk to the participant terminal, and send call disconnect information for the double-talk to the calling terminal.
In some embodiments, the 5G core network access request comprises: server description information of the video communication server.
It should be noted that, for the specific execution process of each module and the relation between each module in this embodiment, reference may be made to the corresponding contents in the foregoing call establishment method embodiment, and details are not described here again.
Fig. 7 is a block diagram of a session management function node according to an embodiment of the present disclosure. As shown in fig. 7, the session management function node may be configured to implement the call establishment method provided in the foregoing embodiment, and the session management function node is the second session management function node in the foregoing embodiment. The session management function node includes: a fourth receiving module 7, an association module 8, a calling module 9 and a third sending module 10.
The fourth receiving module 7 is configured to receive a three-party call request sent by the calling terminal.
Wherein the three-way call request comprises: the application layer session identification of the current two-party conversation and the user number of the called terminal.
And the association module 8 is configured to receive a three-party call association request sent by the video communication server through the first session management function node, and associate the calling terminal, the participant terminal, and the called terminal according to the three-party call association request.
Wherein the three-party call association request comprises: the application layer session identification of the two-party conversation and the user number of the calling terminal, and the participating terminal is the other party of the two-party conversation.
And the calling module 9 is used for calling the called terminal through the 5G core network and sending a three-way call establishment message to the calling terminal, so that the calling terminal calls a corresponding application program according to the three-way call establishment message to establish a three-way call among the calling terminal, the participant terminal and the called terminal.
And a third sending module 10, configured to send a triple-party call setup message to the video communication server through the first session management function node.
It should be noted that, for the specific execution process of each module and the relation between each module in this embodiment, reference may be made to the corresponding contents in the foregoing call establishment method embodiment, and details are not described here again.
Fig. 8 is a block diagram of a communication terminal according to an embodiment of the present disclosure. As shown in fig. 8, the communication terminal may be used to implement the call establishment method provided in the foregoing embodiment. The communication terminal includes: an obtaining module 11, a fourth sending module 12, a fifth sending module 13 and a fifth receiving module 14.
The obtaining module 11 is configured to obtain a user number of the called terminal.
The fourth sending module 12 is configured to send a three-way call establishment request to the video communication server, and receive an application layer session identifier of a current two-way call sent by the video communication server.
The three-party call establishment request comprises the following steps: the subscriber number of the calling terminal.
And a fifth sending module 13, configured to send a three-way call request to the second session management function node.
Wherein the three-way call request comprises: the application layer session identification of the two-party conversation and the user number of the called terminal.
And a fifth receiving module 14, configured to receive the triple-party call establishment message sent by the second session management function node, and call a corresponding application program according to the triple-party call establishment message, so as to establish a triple-party call between the calling terminal, the participant terminal, and the called terminal.
It should be noted that, for the specific execution process of each module and the relation between each module in this embodiment, reference may be made to the corresponding contents in the foregoing call establishment method embodiment, and details are not described here again.
Fig. 9 is a block diagram of a call setup system according to an embodiment of the present disclosure. As shown in fig. 9, the call setup system can be used to implement the call setup method provided in the foregoing embodiments. The call establishment system includes: the system comprises a video communication server, a session management function node and a communication terminal.
The video communication server adopts any one of the video communication servers in the previous embodiments; the session management function node adopts the session management function node in the foregoing embodiment, and the session management function node is the second session management function node in the foregoing embodiment; the communication terminal adopts the communication terminal in the foregoing embodiment.
In this embodiment, the call establishing system further includes: a first session management function node and a non-3GPP access function node.
The call establishment system provided by the embodiment of the disclosure can be implemented in a 5G network, and on the basis that a calling terminal and a participant terminal have a call between the two parties based on a mobile terminal application program, the calling terminal interacts with a video communication server and a session management function entity to call a called terminal serving as a standard telephone, so as to establish a three-party call.
It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present disclosure, and that the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure, and these are to be considered as the scope of the disclosure.

Claims (11)

1. A call establishment method is applied to a video communication server, and comprises the following steps:
receiving a three-party call establishment request sent by a calling terminal, wherein the calling terminal is one party of the current two-party call, and the three-party call establishment request comprises the following steps: the user number of the calling terminal;
sending application layer session identification of the two-party call to the calling terminal according to the three-party call establishment request, and sending a 5G core network access request to a non-3GPP access function node;
receiving authentication result information sent by the non-3GPP access function node after authentication is carried out according to the 5G core network access request;
if the authentication result information comprises access confirmation information, performing 3GPP network access operation with the non-3GPP access function node, and returning an access confirmation response to the non-3GPP access function node, so that the non-3GPP access function node can point the session connection relation of the video communication server in the 5G core network to a first session management function node;
sending a three-party call association request to a second session management function node through the first session management function node, so that the second session management function node associates the calling terminal, the participant terminal and the called terminal according to the three-party call association request and calls the called terminal, wherein the three-party call association request comprises: the application layer session identification of the two-party conversation and the user number of the calling terminal, and the participating terminal is the other party of the two-party conversation;
and receiving the three-party call establishment message forwarded from the second session management function node by the first session management function node.
2. The call setup method of claim 1, wherein the three-way call setup request further comprises: call suspend information for the two-party call;
before the step of sending the 5G core network access request to the non-3GPP access function node, the method further includes: suspending the two-party call;
after the step of receiving the three-way call setup message forwarded by the first session management function node from the second session management function node, the method further includes:
and sending the call recovery information aiming at the two-party call to the participating terminal, and sending the call disconnection information aiming at the two-party call to the calling terminal.
3. The call setup method of claim 1, wherein the 5G core network access request comprises: server description information of the video communication server;
the authentication process of the non-3GPP access function node according to the 5G core network access request is as follows:
sending an authentication request to a unified data management node, wherein the authentication request comprises: the server description information;
and receiving and forwarding the authentication result information sent by the unified data management node to a video communication server.
4. A call setup method applied to a second session management function node, the method comprising:
receiving a three-party call request sent by a calling terminal, wherein the three-party call request comprises: the application layer session identification of the current two-party conversation and the user number of the called terminal;
receiving a three-party call association request sent by a video communication server through a first session management function node, and associating the calling terminal, the participating terminal and the called terminal according to the three-party call association request, wherein the three-party call association request comprises: the application layer session identification of the two-party conversation and the user number of the calling terminal, and the participating terminal is the other party of the two-party conversation;
calling the called terminal through a 5G core network, and sending a three-way call establishment message to the calling terminal, so that the calling terminal calls a corresponding application program according to the three-way call establishment message to establish a three-way call among the calling terminal, the participating terminal and the called terminal;
and sending the three-way call establishment message to the video communication server through the first session management function node.
5. A call establishing method is applied to a calling terminal, and comprises the following steps:
acquiring a user number of a called terminal;
sending a three-party call establishment request to a video communication server, and receiving an application layer session identifier of a current two-party call sent by the video communication server, wherein the three-party call establishment request comprises: the user number of the calling terminal;
sending a three-way call request to a second session management function node, the three-way call request comprising: the application layer session identification of the two-party conversation and the user number of the called terminal;
and receiving a three-party call establishment message sent by the second session management function node, calling a corresponding application program according to the three-party call establishment message, and establishing a three-party call among the calling terminal, the participant terminal and the called terminal.
6. A video communication server, comprising:
the first receiving module is used for receiving a three-party call establishment request sent by a calling terminal, wherein the calling terminal is a party of the current two-party call, and the three-party call establishment request comprises: the user number of the calling terminal;
the first sending module is used for sending the application layer session identification of the two-party call to the calling terminal according to the three-party call establishment request and sending a 5G core network access request to a non-3GPP access function node;
a second receiving module, configured to receive authentication result information sent by the non-3GPP access functional node after performing authentication according to the 5G core network access request;
an access module, configured to perform, when the authentication result information includes access confirmation information, an access 3GPP network access operation with the non-3GPP access function node, and return an access confirmation response to the non-3GPP access function node, so that the non-3GPP access function node points a session connection relationship of the video communication server in the 5G core network to the first session management function node;
a second sending module, configured to send a three-way call association request to a second session management function node through the first session management function node, so that the second session management function node associates the calling terminal, the participant terminal, and the called terminal according to the three-way call association request, and calls the called terminal, where the three-way call association request includes: the application layer session identification of the two-party conversation and the user number of the calling terminal, and the participating terminal is the other party of the two-party conversation;
and the third receiving module is used for receiving the three-party call establishment message forwarded by the first session management function node from the second session management function node.
7. The video communication server of claim 6, wherein the three-way call establishment request further comprises: call suspend information for the two-party call;
the first receiving module includes:
a suspending unit for suspending the two-party call;
the third receiving module includes:
and the sending unit is used for sending the call recovery information aiming at the two-party call to the participating terminal and sending the call disconnection information aiming at the two-party call to the calling terminal.
8. The video communication server of claim 6, wherein the 5G core network access request comprises: server description information of the video communication server.
9. A session management function node, comprising:
a fourth receiving module, configured to receive a three-way call request sent by a calling terminal, where the three-way call request includes: the application layer session identification of the current two-party conversation and the user number of the called terminal;
the association module is used for receiving a three-party call association request sent by a video communication server through a first session management function node, and associating the calling terminal, the participant terminal and the called terminal according to the three-party call association request, wherein the three-party call association request comprises: the application layer session identification of the two-party conversation and the user number of the calling terminal, and the participating terminal is the other party of the two-party conversation;
the calling module is used for calling the called terminal through a 5G core network and sending a three-way call establishment message to the calling terminal so that the calling terminal can call a corresponding application program according to the three-way call establishment message to establish three-way calls among the calling terminal, the participating terminal and the called terminal;
and the third sending module is used for sending the three-party call establishment message to the video communication server through the first session management function node.
10. A communication terminal, comprising:
the acquisition module is used for acquiring the user number of the called terminal;
a fourth sending module, configured to send a three-way call establishment request to a video communication server, and receive an application layer session identifier of a current two-way call sent by the video communication server, where the three-way call establishment request includes: a subscriber number of the calling terminal;
a fifth sending module, configured to send a three-way call request to a second session management function node, where the three-way call request includes: the application layer session identification of the two-party conversation and the user number of the called terminal;
and the fifth receiving module is used for receiving the three-party call establishment message sent by the second session management function node, calling a corresponding application program according to the three-party call establishment message, and establishing the three-party call among the calling terminal, the participant terminal and the called terminal.
11. A call set-up system, comprising: the system comprises a video communication server, a session management function node and a communication terminal;
the video communication server is the video communication server as claimed in any one of claims 6 to 8; the session management function node employing the session management function node as claimed in claim 9; the communication terminal employs the communication terminal as claimed in claim 10.
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