CN112333799B - Voice communication method, network system and user terminal - Google Patents
Voice communication method, network system and user terminal Download PDFInfo
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- CN112333799B CN112333799B CN202011229668.5A CN202011229668A CN112333799B CN 112333799 B CN112333799 B CN 112333799B CN 202011229668 A CN202011229668 A CN 202011229668A CN 112333799 B CN112333799 B CN 112333799B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4535—Network directories; Name-to-address mapping using an address exchange platform which sets up a session between two nodes, e.g. rendezvous servers, session initiation protocols [SIP] registrars or H.323 gatekeepers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
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Abstract
The invention provides a voice call method, a network system and a user terminal, wherein the method comprises the following steps: and if the call request of the calling terminal is received from the VoIP network, forwarding the call request of the calling terminal according to the current call preferred type and/or online state of the called terminal. The method, the network system and the user terminal can solve the problem that in the prior art, due to the fact that a part of early-stage marketed 4G terminals cannot use the IMS voice call function in 4G and 5G networks, operators have to reserve precious frequency spectrum resources for 2G and 3G networks and need to invest a large amount of manpower and funds to maintain the operation of the 2G and 3G networks every year, and network resource waste is caused.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a voice call method, a network system, and a user terminal.
Background
Voice services are one of the main services of operators, and the implementation is mainly performed through 4G and 5G networks. However, some of the 4G terminals that are on the market at early stage do not support the Voice over Long-Term Evolution (VoLTE) scheme of the 4G network or the Voice over New Radio (VoNR) scheme of the 5G network, so that the IMS Voice call function cannot be used in the 4G and 5G networks, and the terminal needs to fall back to the 2G and 3G networks when initiating the Voice service. In order to meet the voice service requirements of such user terminals, operators have to reserve precious spectrum resources for 2G and 3G networks and invest a lot of manpower and funds every year to maintain the operation of the 2G and 3G networks, which results in huge waste of network resources.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a voice call method, a network system and a user terminal for solving the problem that in the prior art, as some early-stage marketed 4G terminals cannot use the IMS voice call function in 4G and 5G networks, operators have to reserve precious spectrum resources for 2G and 3G networks and need to invest a lot of manpower and capital every year to maintain the operation of the 2G and 3G networks, which causes network resource waste.
In a first aspect, an embodiment of the present invention provides a voice call method, which is applied to a network side, and the method includes:
and if the call request of the calling terminal is received from the VoIP network, forwarding the call request of the calling terminal according to the current call preferred type and/or online state of the called terminal.
Preferably, the forwarding the call request of the calling terminal according to the current call preferred type and/or online state of the called terminal includes:
judging whether the current conversation preference type and/or the online state of the called terminal is VoIP;
if yes, establishing a VoIP voice communication channel between the calling terminal and the called terminal;
if not, establishing a VoIP voice communication channel between the calling terminal and the VoIP server, establishing a corresponding voice communication channel between the called terminal and the voice server to which the called terminal belongs, and establishing transfer between the voice communication channel and the VoIP voice communication channel.
Preferably, the current call preference type is a VoIP call or an IMS call, the online status includes a VoIP online status and an IMS online status, and before the current call preference type and/or the online status of the called terminal are/is determined to be VoIP, the method further includes:
receiving and storing the current call preference type sent by the called terminal;
and receiving and storing the online state of the called terminal sent by the VoIP server and/or the IMS server.
Preferably, if the current preferred type of the call is a VoIP call and a VoIP of the called terminal is online, or the current preferred type of the call is an IMS call but an IMS of the called terminal is not online and only the VoIP is online, a VoIP voice call channel is established between the calling terminal and the called terminal.
Preferably, if the current preferred type of the call is an IMS call and the IMS of the called terminal is online, or the current preferred type of the call is a VoIP call but the VoIP of the called terminal is not online but only the IMS is online, a VoIP voice call channel is established between the calling terminal and the VoIP server, an IMS voice call channel is established between the called terminal and the IMS server to which the called terminal belongs, and a relay is established between the IMS call channel and the VoIP voice call channel.
Preferably, the method further comprises:
if a call request of a calling terminal is received from an IMS network, further judging whether the called terminal is registered in the IMS;
and if so, establishing an IMS voice communication channel between the calling terminal and the called terminal.
Preferably, if the called terminal is not registered in the IMS, the method further includes:
judging whether the online state of the called terminal is VoIP online or not;
if yes, an IMS voice communication channel is established between the calling terminal and the IMS server, a VoIP voice communication channel is established between the called terminal and the VoIP server to which the called terminal belongs, and transfer is established between the VoIP communication channel and the IMS voice communication channel.
In a second aspect, an embodiment of the present invention provides a voice call method, which is applied to a calling terminal, and the method includes:
performing corresponding network access according to the current call preference type;
if the current call preference type is a VoIP call accessed through a VoIP network, a call request is sent to a VoIP server;
and if the current call preferred type is not the VoIP call accessed through the VoIP network, initiating a call request to a voice server belonging to the original voice.
In a third aspect, an embodiment of the present invention provides a voice call system, including a call management server, a VoIP server, and an IMS server,
the call management server is used for receiving a call request of a calling terminal from a VoIP network, judging whether the current call preference type and/or the online state of a called terminal is VoIP, if so, forwarding the call request to the VoIP server, and if not, establishing transfer between the VoIP server and the IMS server and forwarding the call request to the IMS server;
the VoIP server is used for establishing a VoIP voice communication channel between the calling terminal and the called terminal when receiving the communication request forwarded by the communication management server;
and the IMS server is used for establishing an IMS voice communication channel with the called terminal when receiving the communication request forwarded by the communication management server.
In a fourth aspect, an embodiment of the present invention provides a user terminal, including:
the network access module is used for carrying out corresponding network access according to the current call preferred type;
the first conversation module is connected with the network access module and is used for initiating a conversation request to a VoIP server if the current conversation preferred type is a VoIP conversation accessed through a VoIP network;
and the second call module is connected with the network access module and used for initiating a call request to a voice server belonging to the original voice if the current call preferred type is not a VoIP call accessed through a VoIP network.
According to the voice communication method, the network system and the user terminal provided by the embodiment of the invention, a unified VoIP voice service entrance is constructed by installing VoIP client programs in the user terminals with different network standards, so that a voice scheme of 2G and 3G network circuit domains is replaced by the VoIP scheme, and thus the user terminal which cannot use the IMS voice communication function can use the voice function through the unified voice service entrance, and the user terminal can be communicated with the user terminal adopting IMS voice through VoIP after 2G and 3G frequency reduction and network disconnection, so that the amount of modification of a terminal protocol stack and a 4G existing network is small, and the popularization cost is low. Meanwhile, a VoIP client program is installed on the user terminal supporting the IMS function, and VoIP is used as a supplementary scheme of the IMS voice of an operator, so that the user terminal can simultaneously support the IMS function and the VoIP function. In addition, after receiving the call request of the calling terminal from the VoIP network, the network side does not need to instruct the user terminal to drop back to the 2G and 3G networks, and can directly forward the call request of the calling terminal according to the current call preferred type and/or online state of the called terminal, thereby realizing the intercommunication between VoIP and IMS or other voice servers, and solving the problem that in the prior art, part of early-marketed 4G terminals cannot use the IMS voice call function in the 4G and 5G networks, so that operators cannot reserve precious spectrum resources for the 2G and 3G networks, and need to invest a large amount of manpower and funds to maintain the operation of the 2G and 3G networks every year, thereby causing network resource waste.
Drawings
FIG. 1: a flow chart of a voice call method in embodiment 1 of the present invention;
FIG. 2: the user terminal of the embodiment of the invention is a schematic structure diagram of a network system;
FIG. 3: the call flow chart is that the calling terminal and the called terminal of the embodiment of the invention are both accessed through the VoIP network;
FIG. 4 is a schematic view of: the calling terminal of the embodiment of the invention accesses the calling flow chart of the called terminal through the VoIP network and the IMS network;
FIG. 5 is a schematic view of: the calling terminal of the embodiment of the invention accesses the called terminal through the IMS network and accesses the calling flow chart through the VoIP network;
FIG. 6: a flow chart of a voice call method in embodiment 2 of the present invention;
FIG. 7: a schematic structural diagram of a user terminal in embodiment 4 of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1:
the present embodiment provides a voice call method, applied to a network side, as shown in fig. 1, the method includes:
step S102: if receiving a call request of a calling terminal from a Voice over Internet Protocol (VoIP) network based on IP, forwarding the call request of the calling terminal according to the current call preferred type and/or online state of a called terminal.
It should be noted that VoIP is a voice call technology, and a voice call is achieved through Internet Protocol (IP), that is, communication is performed through the internet. VoLTE and VoNR voice are collectively referred to as IP Multimedia Subsystem IMS (IP Multimedia Subsystem) voice. IMS is a generic network architecture proposed by the 3GPP standards organization to provide IP-based multimedia services over 4G, 5G networks.
In this embodiment, in order to solve the problem that some 4G terminals on the market in the early stage cannot use the IMS voice call function in the 4G and 5G networks, a VoIP scheme is used instead of a 2G or 3G network circuit domain voice scheme, and a VoIP client program is installed in a user terminal, so that the user terminal that cannot use the IMS voice call function can communicate with the user terminal that uses IMS voice or other voices through VoIP voice, and not only is the amount of modification to the terminal protocol stack and the 4G existing network small, but also the popularization cost is low.
In this embodiment, the VoIP client has a basic VoIP voice function, and the VoIP client may exist in parallel with a native voice application of the user terminal system without modifying a baseband protocol stack and an operating system. The user terminal which can not use the IMS voice communication function can realize the VoIP voice function by installing the VoIP client program, and other user terminals which support the IMS function can also install the VoIP client program, thereby not only providing the IMS voice function through the original voice application, but also providing the calling and answering functions of the VoIP voice through the VoIP client program.
In this embodiment, the calling terminal determines the call type according to the terminal capability, the current call preference type and the online status, where the terminal capability refers to whether the terminal can support IMS call and VoIP call functions. If the terminal supports two call functions at the same time, the user is required to set the current call preference type, network registration is carried out and the call mode adopted by the call is determined through the current call preference type, if the terminal only supports the VoIP call function, the current call preference type is defaulted to be the VoIP call, and the current call preference type of the terminal can be prestored.
In this embodiment, if the current preferred type of call is a VoIP call by default, a VoIP network access is performed, so that when the calling terminal initiates a call request, the network side receives the call request of the calling terminal from the VoIP network, and forwards the call request of the calling terminal according to the current preferred type of call and/or online status of the called terminal.
Optionally, forwarding the call request of the calling terminal according to the current call preference type and/or the online status of the called terminal may include:
judging whether the current conversation preference type and/or the online state of the called terminal is VoIP;
if yes, establishing a VoIP voice communication channel between the calling terminal and the called terminal;
if not, establishing a VoIP voice communication channel between the calling terminal and the VoIP server, establishing a corresponding voice communication channel between the called terminal and the voice server to which the called terminal belongs, and establishing transfer between the voice communication channel and the VoIP voice communication channel.
In this embodiment, the current call preference type may be a VoIP call or an IMS call, and the presence status may include a VoIP presence status and an IMS presence status.
Optionally, before determining whether the current call preference type and/or the online status of the called terminal is VoIP, the method further includes:
receiving and storing the current conversation preference type sent by the called terminal;
and receiving and storing the online state of the called terminal sent by the VoIP server and/or the IMS server.
In this embodiment, in order to implement interworking between VoIP and IMS or other voice, the network side may include a call management server for providing a route between the VoIP server and the IMS server or other voice server, so that the voice call can be established between the calling terminal and the called terminal through the relay of the call management server.
In this embodiment, the network side may use the call management server to store the online status of the user terminal and the current call preference type. The online state can be reported by a VoIP or IMS server in real time when the user terminal registers in the VoIP or IMS network, or the call management server can actively inquire the VoIP or IMS server, and the current call preference type is directly reported by the user terminal.
It should be noted that, in the present invention, the connection between the user terminal and the network side may be in a WiFi manner, or may be in a 4G or 5G mobile data manner. As shown in fig. 2, a schematic diagram of a structure of a network system accessed by a user terminal is shown, a basic function of a network side of VoIP is implemented by a VoIP server, the VoIP server provides functions of session management, user authentication and the like of VoIP service, and the VoIP server is accessed to an IMS core network by a call management server, thereby implementing interworking between VoIP voice and IMS voice. The terminal-side function of VoIP is realized by the installed VoIP client program. The call management server is respectively connected with the IMS server and the VoIP server and has the main functions as follows: (1) Inquiring about the online state of a VoLTE or VoNR user from the IMS, or inquiring about the online state of a VoIP user from the VoIP; (2) Recording the current call preferred type setting of the user terminal voice; (3) And routing control plane and media plane data between the IMS and the VoIP to realize the intercommunication of IMS voice and VoIP voice.
In this embodiment, in order to implement VoIP and IMS interworking, the user terminal uses the same phone number in both VoIP and IMS services, and the user can correctly find the called party by selecting an access domain through the basic call route when the IMS or VoIP is online. The user can be provided with a consistent experience through the common number of the IMS and the VoIP, so that the IMS user can call the VoIP user through the telephone number, and vice versa.
In this embodiment, the user terminals with different terminal capabilities select different basic call flows under different network structures. The calling terminal selects an access network according to the terminal capability and the current call preference type. The called terminal inquires the terminal on-line state and the current conversation preferred type by the network side to select the access network of the terminal.
In this embodiment, according to different ways of accessing the calling terminal to the network, the session process of the calling side is also different, and the calling session flow can be divided into the following two cases:
(1) Calling terminal access through VoLTE network
In this scenario, the calling side message flow is the same as the calling side message flow of the existing ordinary IMS network user initiated call, and is not described here again.
(2) Calling terminal access through VoIP network
In this scenario, the calling side message flow is the same as the calling side message flow of the existing ordinary VoIP network user initiated call, and is not described here again.
In this embodiment, according to different ways of accessing the network by the calling terminal and the called terminal, the session process of the called side is also different, and the called session process may be divided into: (a) A calling terminal is accessed through a VoIP network, and a called terminal is accessed through the VoIP network; (b) A calling terminal is accessed through a VoIP network, and a called terminal is accessed through a VoLTE network; (c) A calling terminal is accessed through a VoLTE network, and a called terminal is accessed through a VoIP network; (d) The calling terminal is accessed through a VoLTE network, and the called terminal is accessed through the VoLTE network.
In this embodiment, a user terminal that cannot use the IMS voice call function or a user terminal that supports the IMS function may initiate a call request to the VoIP server by installing a VoIP client program and setting the current call preference type to a VoIP call.
Optionally, if the current call preference type is a VoIP call and the VoIP of the called terminal is online, or the current call preference type is an IMS call but the IMS of the called terminal is not online but only VoIP is online, a VoIP voice call channel is established between the calling terminal and the called terminal.
In this embodiment, as shown in fig. 3, if the calling terminal and the called terminal are both accessed through the VoIP network, the call flow in this scenario is as follows:
1. a calling terminal initiates a VoIP call to a VoIP server;
2, the VoIP server transmits the call request to the call management server;
3. the call management server inquires the current call preference type and the online state of the called terminal, if the current call preference type of the called terminal is VoIP call or the preferred voice type is IMS call but the IMS of the called terminal is not online, and only the VoIP is online currently, the call management server forwards a call request to the VoIP server;
and 4, the VoIP server calls the called terminal by VoIP voice call, and establishes a VoIP voice call channel between the calling terminal and the called terminal through the VoIP server.
Optionally, if the current preferred type of the call is an IMS call and the IMS of the called terminal is online, or the current preferred type of the call is a VoIP call but the VoIP of the called terminal is not online but only the IMS is online, a VoIP voice call channel is established between the calling terminal and the VoIP server, an IMS voice call channel is established between the called terminal and the IMS server to which the called terminal belongs, and a transit is established between the IMS call channel and the VoIP voice call channel.
In this embodiment, as shown in fig. 4, if the calling terminal accesses through the VoIP network and the called terminal accesses through the IMS network, the call flow in this scenario is as follows:
1. a calling terminal initiates a VoIP call to a VoIP server;
2, the VoIP server transmits the call request to the call management server;
3. the call management server inquires the current call preference type and the online state of the called terminal, and if the current call preference type of the called terminal is an IMS call, or the current call preference type of the called terminal is a VoIP call but the called VoIP is not online, the call management server forwards a call request to the IMS server;
and 4, the IMS server calls the called terminal by IMS voice call and establishes an IMS voice channel with the called terminal. A VoIP voice channel is established between the VoIP server and the calling terminal, and the IMS server and the VoIP server are routed through the call management server. Therefore, the voice call is established between the calling terminal and the called terminal through the transfer of the call management server.
Optionally, the method further comprises:
if a call request of a calling terminal is received from an IMS network, further judging whether a called terminal is registered in the IMS;
and if so, establishing an IMS voice communication channel between the calling terminal and the called terminal.
In this embodiment, the user terminal supporting the IMS function may initiate a call request to the IMS server by installing a VoIP client program and setting the current call preference type to be an IMS call.
In this embodiment, if the called terminal is registered in the IMS, that is, the called terminal accesses through the IMS network, the call is a standard IMS call flow, and an IMS voice call channel is established between the calling terminal and the called terminal by the IMS server without forwarding a call request to the call management server.
Optionally, if the called terminal is not registered in the IMS, the method may further include:
judging whether the online state of the called terminal is VoIP online or not;
if yes, an IMS voice communication channel is established between the calling terminal and the IMS server, a VoIP voice communication channel is established between the called terminal and the VoIP server to which the called terminal belongs, and transfer is established between the VoIP communication channel and the IMS voice communication channel.
In this embodiment, as shown in fig. 5, if the calling terminal accesses through the IMS network and the called terminal accesses through the VoIP network, the call flow in this scenario is as follows:
1. a calling terminal initiates a VoLTE or VoNR call to an IMS server;
and 2, the IMS server firstly routes the call request to the called terminal according to the common IMS call to inquire whether the called terminal is registered in the IMS, and if the called terminal is not registered in the IMS, the IMS server forwards the call request to the call management server.
3. After receiving the call request, the call management server inquires the VoIP online state of the called terminal, and if the current VoIP of the called terminal is online, the call management server forwards the call request to the VoIP server;
and 4, the VoIP server calls the called terminal by the VoIP conversation and establishes a VoIP voice channel with the called terminal. An IMS voice channel is established between the IMS server and the calling terminal, and the IMS server and the VoIP server are routed through the call management server. Therefore, the voice call is established between the calling terminal and the called terminal through the transfer of the call management server.
The voice call method provided by the embodiment of the invention constructs a unified VoIP voice service entrance by installing VoIP client programs in user terminals of different network types, and realizes that a VoIP scheme replaces a voice scheme of 2G and 3G network circuit domains, so that the user terminal which cannot use the IMS voice call function can use the voice function through the unified voice service entrance, and the user terminal can be communicated with the user terminal adopting IMS voice through VoIP after 2G and 3G frequency reduction and network withdrawal, thereby not only reducing the amount of terminal protocol stack and 4G current network reconstruction, but also having lower popularization cost. Meanwhile, a VoIP client program is installed on a user terminal supporting the IMS function, and VoIP is used as a supplement scheme of IMS voice of an operator, so that the user terminal can simultaneously support the IMS function and the VoIP function. In addition, after receiving the call request of the calling terminal from the VoIP network, the network side does not need to instruct the user terminal to drop back to the 2G and 3G networks, and can directly forward the call request of the calling terminal according to the current call preferred type and/or online state of the called terminal, thereby realizing the intercommunication between VoIP and IMS or other voice servers, and solving the problem that in the prior art, part of early-marketed 4G terminals cannot use the IMS voice call function in the 4G and 5G networks, so that operators cannot reserve precious spectrum resources for the 2G and 3G networks, and need to invest a large amount of manpower and funds to maintain the operation of the 2G and 3G networks every year, thereby causing network resource waste.
Example 2:
as shown in fig. 6, this embodiment provides a voice call method, which is applied to a calling terminal, and the method includes:
step S202: performing corresponding network access according to the current call preference type;
step S204: if the current call preference type is a VoIP call accessed through a VoIP network, a call request is sent to a VoIP server;
step S206: and if the current call preferred type is not the VoIP call accessed through the VoIP network, initiating a call request to a voice server belonging to the original voice.
In this embodiment, if the calling terminal is a part of the 4G terminals that are on the market in the early stage, it is able to communicate with the user terminal using the IMS voice or other voice through the VoIP voice by installing the VoIP client program. If the calling terminal supports the IMS function, a call request can be initiated to a VoIP server by installing a VoIP client program and setting the current call preferred type as a VoIP call.
Example 3:
the embodiment provides a network system, which is characterized by comprising a call management server, a VoIP server and an IMS server,
the call management server is used for receiving a call request of the calling terminal from the VoIP network, judging whether the current call preferred type and/or the online state of the called terminal is VoIP or not, if so, forwarding the call request to the VoIP server, and if not, establishing transfer between the VoIP server and the IMS server and forwarding the call request to the IMS server;
the VoIP server is used for establishing a VoIP voice communication channel between the calling terminal and the called terminal when receiving the communication request forwarded by the communication management server;
the IMS server is used for establishing an IMS voice communication channel with the called terminal when receiving the communication request forwarded by the communication management server.
Example 4:
as shown in fig. 7, the present embodiment provides a user terminal, including:
the network access module 30 is used for performing corresponding network access according to the current call preferred type;
a first call module 31 connected to the network access module 30, configured to initiate a call request to the VoIP server if the current call preference type is a VoIP call accessed through a VoIP network;
and the second call module 32 is connected to the network access module 30, and is configured to initiate a call request to a voice server belonging to the native voice if the current call preferred type is not a VoIP call accessed through a VoIP network.
The user terminal is now acting as the calling terminal.
When the user terminal is used as a called terminal, the first call module of the user terminal is mainly used for receiving a call request sent by the VoIP server and establishing a VoIP voice call channel with the VoIP server.
The first call module may be a VoIP client installed in the user terminal.
In the voice call method, the network system, and the user terminal provided in embodiments 2 to 4, a unified VoIP voice service entry is constructed by installing a VoIP client program in the user terminals of different network systems, so that a voice scheme in which 2G and 3G network circuit domains are replaced with the VoIP scheme is implemented, and thus a user terminal that cannot use an IMS voice call function can use a voice function through the unified voice service entry, and after 2G and 3G frequency reduction and network disconnection, the user terminal can communicate with the user terminal that uses IMS voice through VoIP voice, which not only reduces the amount of modification to a terminal protocol stack and a 4G existing network, but also has a low popularization cost. Meanwhile, a VoIP client program is installed on the user terminal supporting the IMS function, and VoIP is used as a supplementary scheme of the IMS voice of an operator, so that the user terminal can simultaneously support the IMS function and the VoIP function. In addition, after receiving the call request of the calling terminal from the VoIP network, the network side does not need to instruct the user terminal to drop back to the 2G and 3G networks, and can directly forward the call request of the calling terminal according to the current call preferred type and/or online state of the called terminal, thereby realizing the intercommunication between VoIP and IMS or other voice servers, and solving the problem that in the prior art, part of early-marketed 4G terminals cannot use the IMS voice call function in the 4G and 5G networks, so that operators cannot reserve precious spectrum resources for the 2G and 3G networks, and need to invest a large amount of manpower and funds to maintain the operation of the 2G and 3G networks every year, thereby causing network resource waste.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and scope of the invention, and such modifications and improvements are also considered to be within the scope of the invention.
Claims (9)
1. A voice call method is applied to a network side, and the method comprises the following steps:
if a call request of a calling terminal is received from a VoIP network, forwarding the call request of the calling terminal according to the current call preferred type and/or online state of a called terminal, specifically comprising:
judging whether the current conversation preference type and/or the online state of the called terminal is VoIP;
if yes, establishing a VoIP voice communication channel between the calling terminal and the called terminal;
if not, establishing a VoIP voice communication channel between the calling terminal and the VoIP server, establishing a corresponding voice communication channel between the called terminal and the voice server to which the called terminal belongs, and establishing transfer between the voice communication channel and the VoIP voice communication channel.
2. The voice call method according to claim 1, wherein the current call preference type is a VoIP call or an IMS call, the presence status includes a VoIP presence status and an IMS presence status, and before the determining whether the current call preference type and/or the presence status of the called terminal is VoIP, the method further comprises:
receiving and storing the current call preference type sent by the called terminal;
and receiving and storing the online state of the called terminal sent by the VoIP server and/or the IMS server.
3. The method of claim 2, wherein if the current preferred type of call is a VoIP call and a VoIP of the called terminal is online, or the current preferred type of call is an IMS call but an IMS of the called terminal is not online and only VoIP is online, a VoIP voice call channel is established between the calling terminal and the called terminal.
4. The method of claim 2, wherein if the current preferred type of call is an IMS call and an IMS of the called terminal is online, or if the current preferred type of call is a VoIP call but a VoIP of the called terminal is not online but only the IMS is online, a VoIP voice call channel is established between the calling terminal and the VoIP server, an IMS voice call channel is established between the called terminal and the IMS server to which the called terminal belongs, and a relay is established between the IMS call channel and the VoIP voice call channel.
5. The voice call method according to claim 1, further comprising:
if a call request of a calling terminal is received from an IMS network, further judging whether the called terminal is registered in the IMS;
and if so, establishing an IMS voice communication channel between the calling terminal and the called terminal.
6. The voice call method according to claim 5, wherein if the called terminal is not registered in the IMS, the method further comprises:
judging whether the online state of the called terminal is VoIP online or not;
if yes, an IMS voice communication channel is established between the calling terminal and the IMS server, a VoIP voice communication channel is established between the called terminal and the VoIP server to which the called terminal belongs, and transfer is established between the VoIP communication channel and the IMS voice communication channel.
7. A voice call method is applied to a calling terminal, and the method comprises the following steps:
performing corresponding network access according to the current call preference type;
if the current call preference type is a VoIP call accessed through a VoIP network, a call request is sent to a VoIP server according to a VoIP voice call channel established by the VoIP server between a calling terminal and a called terminal;
if the current call preferred type is not a VoIP call accessed through a VoIP network, a call request is initiated according to a VoIP voice call channel established between the calling terminal and the VoIP server, a corresponding voice call channel established between the called terminal and the voice server to which the called terminal belongs, and a transfer direction established between the voice call channel and the VoIP voice call channel and the voice server to which the original voice belongs.
8. A network system is characterized by comprising a call management server, a VoIP server and an IMS server,
the call management server is used for receiving a call request of a calling terminal from a VoIP network and judging whether the current call preference type and/or the online state of a called terminal are/is VoIP or not, if so, forwarding the call request to the VoIP server, and if not, establishing transfer between the VoIP server and the IMS server and forwarding the call request to the IMS server;
the VoIP server is used for establishing a VoIP voice communication channel between the calling terminal and the called terminal when receiving the communication request forwarded by the communication management server;
and the IMS server is used for establishing an IMS voice communication channel with the called terminal when receiving the communication request forwarded by the communication management server.
9. A user terminal, comprising:
the network access module is used for carrying out corresponding network access according to the current call preferred type;
the first call module is connected with the network access module and used for initiating a call request to a VoIP server according to a VoIP voice call channel established by the VoIP server between the calling terminal and the called terminal if the current call preferred type is a VoIP call accessed through a VoIP network;
and the second call module is connected with the network access module and used for initiating a call request to the voice server belonging to the original voice according to a VoIP voice call channel established between the calling terminal and the VoIP server, a corresponding voice call channel established between the called terminal and the voice server belonging to the called terminal and a transit established between the voice call channel and the VoIP voice call channel if the current call preferred type is not the VoIP call accessed through the VoIP network.
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