CN105578112B

CN105578112B - Video call method and device

Info

Publication number: CN105578112B
Application number: CN201510975931.8A
Authority: CN
Inventors: 刘小猛
Original assignee: Nanjing Qinhuai Ziyun Chuangyi Enterprise Service Co Ltd
Current assignee: Nanjing Qinhuai Ziyun Chuangyi Enterprise Service Co., Ltd
Priority date: 2015-12-23
Filing date: 2015-12-23
Publication date: 2020-06-09
Anticipated expiration: 2035-12-23
Also published as: CN105578112A

Abstract

The invention provides a video call method, which is applied to a first terminal and establishes VoLTE video call connection with two or more terminals; sending a shared call connection request to one of two or more terminals; detecting whether a terminal receiving a shared call connection request establishes video call connection with other terminals in two or more terminals according to the shared call connection request; if yes, the first terminal and two or more terminals conduct the multi-party video call simultaneously. The invention also provides a video call device. The video call method and the device provided by the invention can realize three-party VoLTE call, and can be used for initiating a small video conference at any time in a great convenience manner no matter whether the conference is work, study or chat.

Description

Video call method and device

Technical Field

The invention relates to the field of communication, in particular to a video call method and a video call device.

Background

With the rapid development of mobile communication, the functions of mobile terminals are becoming more and more abundant, and people now rely on the requirements of dual-card terminals. The VoLTE technology is an advanced video and high-definition voice communication technology covering the whole world, and videos and voices can be smoothly and clearly transmitted to the opposite side by means of high-speed data transmission of the LTE.

Disclosure of Invention

The invention mainly aims to provide a video call method and a video call device, and aims to improve the video call quality of a mobile terminal.

In order to achieve the above object, the present invention provides a video call method, which is applied to a first terminal, and establishes a VoLTE video call connection with two or more terminals; sending a shared call connection request to one of two or more terminals; detecting whether a terminal receiving a shared call connection request establishes video call connection with other terminals in two or more terminals according to the shared call connection request; if yes, the first terminal and two or more terminals conduct the multi-party video call simultaneously.

Optionally, the shared call connection request includes VoLTE registration identity information of other terminals of the two or more terminals, where the terminal that receives the shared call connection request sent by the first terminal is a terminal to be connected by the other terminals of the two or more terminals.

Optionally, the step of the first terminal performing VoLTE video call with two or more terminals simultaneously further includes: detecting whether system resources of a first terminal reach a preset value; when the system resource of the first terminal reaches a preset value, the VoLTE video call quality between the first terminal and different terminals is adjusted according to the priority of VoLTE video calls established between the first terminal and two or more terminals.

Optionally, the step of establishing a VoLTE video call connection between the terminal receiving the shared call connection request and another terminal of the two or more terminals further includes: detecting whether the first terminal receives a control instruction; and if so, controlling the terminal receiving the shared call connection request and other terminals of the two or more terminals to perform data transmission in different connection modes according to the control instruction so as to perform VoLTE video call.

Optionally, when the control instruction is a first instruction, a virtual memory is established in the first terminal to implement data transmission between two or more terminals.

The invention also provides a video call device, which is applied to the first terminal and comprises: the data processing module is used for establishing VoLTE video call connection with two or more terminals; the information processing module is used for sending a shared call connection request to one of two or more terminals; the detection module is used for detecting whether the terminal receiving the shared call connection request establishes VoLTE video call connection with other terminals in two or more terminals according to the shared call connection request; the connection module is used for establishing VoLTE video call connection with other terminals in the two or more terminals according to the shared call connection request when the detection module detects that the terminal receiving the shared call connection request carries out VoLTE video call with the first terminal and the two or more terminals at the same time.

Optionally, the detecting module is further configured to detect whether the system resource of the first terminal reaches a preset value, and the video call device further includes a resource coordination module, configured to adjust a VoLTE video call quality between the first terminal and different terminals according to priorities of VoLTE video calls established between the first terminal and two or more terminals when the detecting module detects that the system resource of the first terminal reaches the preset value.

Optionally, the detection module is further configured to detect whether the first terminal receives the control instruction, and the video call device further includes a data sharing module, configured to control, when the detection module detects that the first terminal receives the control instruction, the terminal that receives the shared call connection request and other terminals of the two or more terminals to perform data transmission in different connection manners according to the control instruction, so as to perform a VoLTE video call.

Optionally, the data sharing module is further configured to establish a virtual memory in the first terminal when the detection module detects that the first terminal receives the control instruction, so as to implement data transmission between two or more terminals.

According to the video call method and the device, the first terminal establishes independent bearing IP channels for the first SIM card and the second terminal and the second SIM card and the third terminal respectively through VoLTE, and VoLTE video call connection is established between the second terminal and the third terminal under the action of the first terminal, so that three-party VoLTE call is realized, and a small video conference which can be initiated at any time can be greatly facilitated no matter whether the discussion work, the study or the chat is performed.

Drawings

Fig. 1 is a schematic hardware configuration diagram of a preferred mobile terminal implementing various embodiments of the present invention;

FIG. 2 is a block diagram of the electrical structure of the camera of FIG. 1;

FIG. 3 is a flowchart illustrating a video call method according to a first embodiment of the present invention;

FIG. 4 is a state diagram of a video call method according to the present invention;

FIG. 5 is a schematic diagram illustrating another state of the video call method according to the present invention;

FIG. 6 is a flowchart illustrating a video call method according to a second embodiment of the present invention;

FIG. 7 is a flowchart illustrating a video call method according to a third embodiment of the present invention;

fig. 8 is a block diagram of a video call device according to an embodiment of the invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A mobile terminal implementing various embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.

The mobile terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a cellular phone, a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, etc., and a stationary terminal such as a digital TV, a desktop computer, etc. In the following, it is assumed that the terminal is a mobile terminal. However, it will be understood by those skilled in the art that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for moving purposes.

Fig. 1 is a schematic hardware structure of an alternative mobile terminal implementing various embodiments of the present invention.

The mobile terminal 100 may include a wireless communication unit 110, a user input unit 130, an output unit 150, a memory 160, and a controller 180, etc. Fig. 1 illustrates a mobile terminal having various components, but it is to be understood that not all illustrated components are required to be implemented. More or fewer components may alternatively be implemented. Elements of the mobile terminal will be described in detail below.

The wireless communication unit 110 typically includes one or more components that allow radio communication between the mobile terminal 100 and a wireless communication device or network. For example, the wireless communication unit may include at least one of a broadcast receiving module 111, a mobile communication module 112, and a wireless internet module 113.

The broadcast receiving module 111 receives a broadcast signal and/or broadcast associated information from an external broadcast management server via a broadcast channel. The broadcast channel may include a satellite channel and/or a terrestrial channel. The broadcast management server may be a server that generates and transmits a broadcast signal and/or broadcast associated information or a server that receives a previously generated broadcast signal and/or broadcast associated information and transmits it to a terminal. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and the like. Also, the broadcast signal may further include a broadcast signal combined with a TV or radio broadcast signal. The broadcast associated information may also be provided via a mobile communication network, and in this case, the broadcast associated information may be received by the mobile communication module 112. The broadcast signal may exist in various forms, for example, it may exist in the form of an Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB), an Electronic Service Guide (ESG) of digital video broadcasting-handheld (DVB-H), and the like. The broadcast receiving module 111 may receive a signal broadcast by using various types of broadcasting devices. In particular, the broadcast receiving module 111 may receive a broadcast signal by using a signal such as multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), digital video broadcasting-handheld (DVB-H), forward link media (MediaFLO)^@) A digital broadcasting apparatus such as a digital broadcasting apparatus, a terrestrial digital broadcasting integrated service (ISDB-T), etc. receives digital broadcasting. The broadcast receiving module 111 may be constructed as various broadcasting devices suitable for providing broadcast signals as well as the above-described digital broadcasting device. The broadcast signal and/or broadcast associated information received via the broadcast receiving module 111 may be stored in the memory 160 (or other type of storage medium).

The mobile communication module 112 transmits and/or receives radio signals to and/or from at least one of a base station (e.g., access point, node B, etc.), an external terminal, and a server. Such radio signals may include voice call signals, video call signals, or various types of data transmitted and/or received according to text and/or multimedia messages.

The user input unit 130 may generate key input data according to a command input by a user to control various operations of the mobile terminal. The user input unit 130 allows a user to input various types of information, and may include a keyboard, dome sheet, touch pad (e.g., a touch-sensitive member that detects changes in resistance, pressure, capacitance, and the like due to being touched), scroll wheel, joystick, and the like. In particular, when the touch pad is superimposed on the display unit 151 in the form of a layer, a touch screen may be formed.

The output unit 150 is configured to provide output signals (e.g., audio signals, video signals, alarm signals, vibration signals, etc.) in a visual, audio, and/or tactile manner. The output unit 150 may include a display unit 151, an audio output module 152, and the like.

The display unit 151 may display information processed in the mobile terminal 100. For example, when the mobile terminal 100 is in a phone call mode, the display unit 151 may display a User Interface (UI) or a Graphical User Interface (GUI) related to a call or other communication (e.g., text messaging, multimedia file downloading, etc.). When the mobile terminal 100 is in a video call mode or an image capturing mode, the display unit 151 may display a captured image and/or a received image, a UI or GUI showing a video or an image and related functions, and the like.

Meanwhile, when the display unit 151 and the touch pad are overlapped with each other in the form of a layer to form a touch screen, the display unit 151 may serve as an input device and an output device. The display unit 151 may include at least one of a Liquid Crystal Display (LCD), a thin film transistor LCD (TFT-LCD), an Organic Light Emitting Diode (OLED) display, a flexible display, a three-dimensional (3D) display, and the like. Some of these displays may be configured to be transparent to allow a user to view from the outside, which may be referred to as transparent displays, and a typical transparent display may be, for example, a TOLED (transparent organic light emitting diode) display or the like. Depending on the particular desired implementation, the mobile terminal 100 may include two or more display units (or other display devices), for example, the mobile terminal may include an external display unit (not shown) and an internal display unit (not shown). The touch screen may be used to detect a touch input pressure as well as a touch input position and a touch input area.

The audio output module 152 may convert audio data received by the wireless communication unit 110 or stored in the memory 160 into an audio signal and output as sound when the mobile terminal is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output module 152 may provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output module 152 may include a microphone, a buzzer, and the like.

The memory 160 may store software programs and the like for processing and controlling operations performed by the controller 180, or may temporarily store data (e.g., a phonebook, messages, still images, videos, and the like) that has been or will be output. Also, the memory 160 may store data regarding various ways of vibration and audio signals output when a touch is applied to the touch screen.

The memory 160 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, and the like. Also, the mobile terminal 100 may cooperate with a network storage device that performs a storage function of the memory 160 through a network connection.

The controller 180 generally controls the overall operation of the mobile terminal. For example, the controller 180 performs control and processing related to voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia module 181 for reproducing (or playing back) multimedia data, and the multimedia module 181 may be constructed within the controller 180 or may be constructed separately from the controller 180. The controller 180 may perform a pattern recognition process to recognize a handwriting input or a picture drawing input performed on the touch screen as a character or an image.

The various embodiments described herein may be implemented in a computer-readable medium using, for example, computer software, hardware, or any combination thereof. For a hardware implementation, the embodiments described herein may be implemented using at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a processor, a controller, a microcontroller, a microprocessor, an electronic unit designed to perform the functions described herein, and in some cases, such embodiments may be implemented in the controller 180. For a software implementation, the implementation such as a process or a function may be implemented with a separate software module that allows performing at least one function or operation. The software codes may be implemented by software applications (or programs) written in any suitable programming language, which may be stored in the memory 160 and executed by the controller 180.

Up to this point, mobile terminals have been described in terms of their functionality. Hereinafter, a slide-type mobile terminal among various types of mobile terminals, such as a folder-type, bar-type, swing-type, slide-type mobile terminal, and the like, will be described as an example for the sake of brevity. Accordingly, the present invention can be applied to any type of mobile terminal, and is not limited to a slide type mobile terminal.

The mobile terminal 100 as shown in fig. 1 may be configured to operate with communication means such as wired and wireless communication means and satellite-based communication means that transmit data via frames or packets.

A communication apparatus in which a mobile terminal according to the present invention is operable will now be described with reference to fig. 2.

Such communication devices may use different air interfaces and/or physical layers. For example, the air interface used by the communication device includes, for example, Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), and universal mobile telecommunications device (UMTS) (in particular, Long Term Evolution (LTE)), global system for mobile communications (GSM), and so forth. The following description relates to a CDMA communication device, as a non-limiting example, but such teachings are equally applicable to other types of devices.

Referring to fig. 2, the CDMA wireless communication apparatus may include a plurality of mobile terminals 100, a plurality of Base Stations (BSs) 270, Base Station Controllers (BSCs) 275, and a Mobile Switching Center (MSC) 280. The MSC280 is configured to interface with a Public Switched Telephone Network (PSTN) 290. The MSC280 is also configured to interface with a BSC275, which may be coupled to the base station 270 via a backhaul. The backhaul may be constructed according to any of several known interfaces including, for example, E1/T1, ATM, IP, PPP, frame Relay, HDSL, ADSL, or xDSL. It will be understood that an apparatus as shown in fig. 2 may include a plurality of BSCs 2750.

Each BS270 may serve one or more sectors (or regions), each sector covered by a multi-directional antenna or an antenna pointing in a particular direction being radially distant from the BS 270. Alternatively, each partition may be covered by two or more antennas for diversity reception. Each BS270 may be configured to support multiple frequency allocations, with each frequency allocation having a particular frequency spectrum (e.g., 1.25MHz,5MHz, etc.).

The intersection of partitions with frequency allocations may be referred to as a CDMA channel. The BS270 may also be referred to as a base transceiver sub-assembly (BTS) or other equivalent terminology. In such a case, the term "base station" may be used to generically refer to a single BSC275 and at least one BS 270. The base stations may also be referred to as "cells". Alternatively, each sector of a particular BS270 may be referred to as a plurality of cell sites.

As shown in fig. 2, a Broadcast Transmitter (BT)295 transmits a broadcast signal to the mobile terminal 100 operating within the apparatus. A broadcast receiving module 111 as shown in fig. 1 is provided at the mobile terminal 100 to receive a broadcast signal transmitted by the BT 295. In fig. 2, several global positioning device (GPS) satellites 300 are shown. The satellite 300 assists in locating at least one of the plurality of mobile terminals 100.

In fig. 2, a plurality of satellites 300 are depicted, but it is understood that useful positioning information may be obtained with any number of satellites. The GPS module 115 as shown in fig. 1 is generally configured to cooperate with satellites 300 to obtain desired positioning information. Other techniques that can track the location of the mobile terminal may be used instead of or in addition to GPS tracking techniques. In addition, at least one GPS satellite 300 may selectively or additionally process satellite DMB transmission.

As a typical operation of the wireless communication apparatus, the BS270 receives reverse link signals from various mobile terminals 100. The mobile terminal 100 is generally engaged in conversations, messaging, and other types of communications. Each reverse link signal received by a particular base station 270 is processed within the particular BS 270. The obtained data is forwarded to the associated BSC 275. The BSC provides call resource allocation and mobility management functions including coordination of soft handoff procedures between BSs 270. The BSCs 275 also route the received data to the MSC280, which provides additional routing services for interfacing with the PSTN 290. Similarly, the PSTN290 interfaces with the MSC280, the MSC interfaces with the BSCs 275, and the BSCs 275 accordingly control the BS270 to transmit forward link signals to the mobile terminal 100.

Based on the above-mentioned hardware structure of the mobile terminal and the structure of the communication device, the present invention provides various embodiments of the method.

As shown in fig. 3, a first embodiment of the video call method of the present invention is proposed, where the method is applied to the mobile terminal, and if a user performs a multiparty video call through the mobile terminal, the method includes the following steps:

step S310, VoLTE video call connection is established with two or more terminals.

The mobile terminal comprises two or more chips and radio frequency transmitters, and can simultaneously support two or more SIM cards to carry out simultaneous conversation. The mobile terminal supports VoLTE to carry out video call, the mobile terminal is accessed to an EPC core network through an LTE wireless network, the EPC core network establishes default load for a user, and the user is accessed to the internet, so that the mobile terminal can normally use internet service. In the process that a mobile terminal accesses an LTE/EPC network, the network informs the mobile terminal that the network supports VoLTE service, the mobile terminal initiates an IMS APN bearer establishment request, the LTE/EPC establishes an IMS APN default bearer for the mobile terminal, the mobile terminal accesses an IMS core network for registration through an IMS APN IP channel provided by the LTE/EPC network, and after the authentication is passed, the IMS core network completes the registration of a user in a corresponding IMS AS according to the IMS subscription information of the user. Subsequently, the mobile terminal initiates a call, the call request is sent to an IMS core network and an IMS AS registered by the mobile terminal through an IMS APN IP channel provided by an LTE/EPC network, and the IMS AS is responsible for processing the call of the mobile terminal; the IMS core network is responsible for routing according to the called number in the call request and connecting the called party, if the called party is positioned in the IMS network, the called party is connected in the IMS network, and if the called party is other operator users or the called party is positioned in the 2/3G network, the IMS core network connects the call to a circuit domain gateway. Before the connection of the user media plane is established, the IMS core network informs the PCRF, an IP channel special for IMS APN is established for the VoLTE user in the LTE/EPC network, and the voice service quality of the user is guaranteed.

In the present embodiment, the first terminal is included as a call initiating terminal, and the first terminal performs a VoLTE video call with the second terminal and the third terminal. In other embodiments, the number of terminals connected to the first terminal for VoLTE video call may be three, four, etc. depending on the actual situation. The first terminal comprises a first SIM card and a second SIM card, a user is connected with the second terminal through a VoLTE video call through the first SIM card, and the user is connected with the third terminal through the second SIM card. At this time, the second terminal and the third terminal are not in VoLTE video call connection with each other, and the second terminal and the third terminal are in call connection with the first terminal independently.

Step S330, sending a sharing conversation connection request to one of the two or more terminals.

When the first terminal is independently connected with the second terminal and the third terminal, if the second terminal wants to perform VoLTE video call connection with the third terminal to realize three-party call, the second terminal sends a sharing notice to the first terminal to inform the first terminal that the second terminal wants to perform VoLTE video call connection with the third terminal.

The manner in which the second terminal sends the sharing notification to the first terminal may be performed as follows: when a first terminal carries out VoLTE video call with a second terminal and a third terminal, the second terminal and the third terminal can send requests to the first terminal so as to acquire the information of the opposite terminal of the VoLTE video call of the first terminal at the moment, and the first terminal can remind a user of the first terminal whether to allow the second terminal and the third terminal to acquire the information of the opposite terminal in a prompt box mode, namely, the second terminal acquires that the first terminal still carries out VoLTE video call connection with the third terminal at the moment, and the third terminal acquires that the first terminal still carries out VoLTE video call connection with the second terminal at the moment. As shown in fig. 4, after the second terminal and the third terminal acquire the information of the other party, the information is displayed on respective video call display interfaces in a list or icon manner. When the second terminal detects that the icon representing the third terminal is touched, the second terminal sends a sharing notification to the first terminal to inform the first terminal that the second terminal wants to perform VoLTE video call connection with the third terminal.

After the first terminal receives the sharing notification, the first terminal acquires the registration identity information of the second terminal from the sharing notification request information sent by the second terminal, and sends a sharing conversation connection request to the third terminal in an encrypted manner according to the registration identity information.

The operations that the second terminal can perform in this step are also applicable to the third terminal.

Step S350, detecting whether the terminal receiving the shared call connection request establishes VoLTE video call connection with other terminals of the two or more terminals according to the shared call connection request, if yes, executing step S370.

Step S370, the first terminal and the two or more terminals perform VoLTE video call simultaneously.

As shown in fig. 5, after receiving the shared call connection request sent by the first terminal, the third terminal analyzes the request information to obtain the registration identity information of the second terminal included in the request, for example: the third terminal initiates a call request to the second terminal, the call request is transmitted to an IMS core network and an IMS AS registered by the third terminal through an IMS APN IP channel provided by an LTE/EPC network, and the IMS AS transmits the call request to the second terminal. The second terminal receives a call request sent by the third terminal, and when the second terminal receives the call request, a VoLTE video call connection is established between the second terminal and the third terminal, so that the first terminal, the second terminal and the third terminal realize three-party video call.

According to the video call method provided by the embodiment, the first terminal establishes independent bearer IP channels for the first SIM card and the second terminal and the second SIM card and the third terminal respectively through VoLTE, and VoLTE video call connection is established between the second terminal and the third terminal under the action of the first terminal, so that three-party VoLTE call is realized, and a small video conference which can be initiated at any time can be greatly facilitated no matter whether the discussion work, the study or the chat is performed.

As shown in fig. 6, fig. 6 is a second embodiment of a video call method according to the present invention, in this embodiment, the video call method includes:

step S610, establishing a VoLTE video call connection with two or more terminals.

In this embodiment, the configuration of the first terminal is the same as that of the first terminal in the first embodiment, and both support multi-card multi-pass function, and can use multiple SIM cards to communicate with other terminals at the same time, and in this embodiment, the number of other terminals is 2, and the terminals are the second terminal and the third terminal respectively. The first terminal establishes a first VoLTE video call connection with the second terminal by using the first SIM card and establishes a second VoLTE video call connection with the third terminal by using the second SIM card in an active calling mode. In other embodiments, the first terminal may also establish a VoLTE video call connection with the second terminal and the third terminal respectively in a passive manner, that is, the second terminal sends a call request to the first terminal, the first terminal accesses the call request through the first SIM card and establishes a first VoLTE video call connection with the second terminal, the third terminal sends a call request to the first terminal, and the first terminal accesses the call request through the second SIM card and establishes a first VoLTE video call connection with the third terminal. In other embodiments, the first terminal may establish a VoLTE video call connection with the second terminal and the third terminal respectively in an active and passive combined manner, that is, the first terminal actively sends a call request to the second terminal through the first SIM card, the second terminal accesses the call request, so that the first terminal establishes a first VoLTE video call connection with the second terminal through the first SIM card, at this time, the third terminal sends a call request to the first terminal, the first terminal accesses the call request through the second SIM card, and establishes a second VoLTE video call connection with the third terminal through the second SIM card.

In other embodiments, the number of terminals connected to the first terminal for VoLTE video call may be three, four, etc. determined according to actual conditions

S620, sending a request for connecting the shared video call to one of the two or more terminals.

The method comprises the steps that when a second terminal is connected with a first terminal in a VoLTE video call, an inquiry request is sent to the first terminal to acquire information of other terminals connected with the first terminal in the VoLTE video call in the same time period, if the first terminal is connected with the second terminal in the VoLTE video call, the other terminals are also connected with the first terminal in the VoLTE video call at the moment, the first terminal sends the information of a third terminal to the second terminal, a video display interface of the second terminal prompts a user of the second terminal in an icon mode, and at the moment, the first terminal is connected with the third terminal in the VoLTE video call. Further, the second terminal periodically sends an inquiry request to the first terminal during the conversation with the first terminal, if a new conversation terminal exists, the first terminal will newly send the newly added terminal to the second terminal, the display interface of the second terminal lists new terminal information in the form of an icon, if the terminal displayed on the second terminal is disconnected from the first terminal, the first terminal will send the terminal information of the disconnected communication to the second terminal, and the display interface of the second terminal will remove the icon representing the terminal.

When the first terminal sends the information of the third terminal to the second terminal, the method is realized by the following mode: the first terminal establishes a database, records of the multi-party call are stored in the database, before the first terminal sends the information of the third terminal to the second terminal, the first terminal judges whether the third terminal and the second terminal know each other according to the multi-party call records in the database, and if the third terminal judges that the second terminal is known, the information of the telephone number, the name and the like of the user of the third terminal is automatically sent to the second terminal; if the third terminal does not recognize the second terminal, the first terminal selectively transmits the information of the third terminal to the second terminal by the active confirmation operation of the user.

And after the second terminal detects that the icon representing the third terminal user is touched, the second terminal sends a sharing notice to the first terminal to inform the first terminal that the second terminal wants to perform VoLTE video call connection with the third terminal.

In this embodiment, all technical contents applied to the second terminal are also applied to the third terminal.

In other embodiments, the first terminal may also actively send a shared call connection request to the third terminal, where the shared call connection request includes the registration identity information of the second terminal.

In other embodiments, the first terminal may also actively send a shared call connection request to the second terminal and the third terminal at the same time, where the shared call connection request includes the registration identity information of the other terminals except the receiving terminal, that is, the shared call request sent to the second terminal includes the registration identity information of the third terminal, and the shared call request sent to the third terminal includes the registration identity information of the second terminal.

Step S630, detecting whether the terminal receiving the shared call connection request establishes VoLTE video call connection with other terminals of the two or more terminals according to the shared call connection request, if yes, entering step S640.

And step S640, the first terminal, the second terminal and the third terminal simultaneously carry out three-party VoLTE video call.

After receiving the shared call connection request sent by the first terminal, the third terminal analyzes the request information to obtain the registration identity information of the second terminal included in the request, for example: the third terminal initiates a call request to the second terminal, the call request is transmitted to an IMS core network and an IMS AS registered by the third terminal through an IMS APN IP channel provided by an LTE/EPC network, and the IMS AS transmits the call request to the second terminal. The second terminal receives a call request sent by the third terminal, and when the second terminal receives the call request, a VoLTE video call connection is established between the second terminal and the third terminal, so that the first terminal, the second terminal and the third terminal realize three-party video call.

Step S650, detecting whether the system resource of the first terminal reaches a preset value. If yes, the process proceeds to step S660.

The first terminal occupies system resources of the first terminal during VoLTE video call with the second terminal and the third terminal, wherein the system resources comprise radio frequency resources, signal quality, RAM, available electric quantity, available flow of an SIM card and the like. The first terminal presets a threshold value for each system resource, and periodically detects whether each system resource reaches the preset threshold value during the VoLTE video call between the first terminal and the second terminal as well as the third terminal.

Step S660, adjusting the VoLTE video call quality between the first terminal and different terminals according to the priority of the VoLTE video call established between the first terminal and two or more terminals.

When a first terminal establishes VoLTE video call connection with other terminals, a label is set on the VoLTE video call connection, the label represents the priority of different VoLTE video call connections, the VoLTE video call connection with high priority represents that the occupation of the opposite end of the VoLTE video call connection as an important contact person needs to preferentially ensure the call quality, and the importance of the opposite end of the VoLTE video call connection with the bottom priority is inferior. The first terminal may determine the priority of the VoLTE video call connection according to the following mode conditions when setting the tag:

in a first mode, the priority of the VoLTE video call connection occupying the SIM card is determined according to the identity of the primary and secondary SIM cards of different first terminals, for example, when the first SIM card is the primary card and the second SIM card is the secondary card, the priority of the VoLTE video call connection established through the first SIM card is high, and the priority of the VoLTE video call connection established through the second SIM card is low;

in the second mode, the priority of the VoLTE video call connection established with the contact is determined according to the level of the contact in the address book, the user of the first terminal can set the level of different contacts in the address book, and is set as a contact with a high level, so that the priority of the VoLTE video call connection established between the first terminal and the contact is high, for example, the user of the first terminal sets the level of "mom" in the address book to be high, and sets the level of "express delivery" in the address book to be first, so that the priority of the VoLTE video call connection established between the first terminal and "mom" is high, and the priority of the VoLTE video call connection established with "express delivery" is low.

And in the third mode, the priority of the VoLTE video call connection is determined according to the time sequence of the VoLTE video call connection establishment, namely, the first terminal establishes the VoLTE video call connection with the second terminal first and then establishes the VoLTE video call connection with the third terminal, so that the priority of the VoLTE video call connection established with the second terminal is high, and the priority of the VoLTE video call connection established with the third terminal is low.

In another embodiment, the first terminal may dynamically meet the signal quality and bandwidth requirement of the other terminal during the video call between the second terminal and the third terminal. The priority is ranked from high to low with signal quality, and from large to small with the same signal quality as the required bandwidth size of the current video.

When the first terminal judges that the priority of a certain VoLTE video call connection is high, the video call bandwidth of the first terminal and the other terminal is increased, namely, the video data transmission rate is increased, and the connection quality of the first terminal and the VoLTE video call with higher priority is ensured in a mode of increasing the transmitting power and the receiving power of an antenna, dividing more memory space and allocating more CPU resources. When the first terminal determines that the priority of a certain VoLTE video call connection is low, the video call bandwidth of the first terminal and the opposite side is reduced, namely, the video data transmission rate is reduced, and the quality of the VoLTE video call connection between the first terminal and the VoLTE video call connection with the lower priority is ensured in a mode that the transmitting power and the receiving power of an antenna are reduced, less memory space is divided, and less CPU resources are allocated.

In the video call method provided by this embodiment, when a first terminal establishes a VoLTE video call connection with another terminal, tags representing different priorities are set for different VoLTE video call connections, and when the first terminal detects that a system resource reaches a preset value, the VoLTE video call connections marked with different priorities are processed differently, so as to ensure the VoLTE video call quality with a higher priority.

As shown in fig. 7, fig. 7 is a third embodiment of a video call method according to the present invention, in this embodiment, the video call method includes:

step S710, establishing a VoLTE video call connection with two or more terminals.

In this embodiment, the configuration of the first terminal is the same as that of the first terminal in the first embodiment, and both support multi-card multi-pass function and can use multiple SIM cards to communicate with other terminals at the same time. The first terminal establishes VoLTE video call connection with the second terminal through the first SIM card, and the first terminal establishes VoLTE video call connection with the third terminal through the second SIM card.

Step S720, sending a call sharing connection request to one of the two or more terminals.

The user of the second terminal sends a request for sharing the video with the third terminal to the first terminal, the first terminal obtains the registration identity information of the second terminal after receiving the video sharing request, the registration identity information comprises information such as SIP ID and IP address, and the first terminal sends a video sharing call connection request to the third terminal in an encryption mode.

Step S730, detecting whether the terminal receiving the shared call connection request establishes VoLTE video call connection with other terminals of the two or more terminals according to the shared call connection request. If yes, the process proceeds to step S740. After the terminal receiving the shared call connection request establishes connection with other terminals in the two or more terminals, the terminal respectively sends a message of completing establishment of the shared call request to the first terminal.

Step S740, detecting whether the first terminal receives the control command. If yes, go to step S750; if not, the process proceeds to step S760.

In this embodiment, when preparing to send a call request to the second terminal, the third terminal sends an agreement notification in advance to the first terminal to agree to share a video call with the second terminal, and meanwhile waits for a predetermined time to detect whether a control instruction sent by the first terminal is received, and after receiving the agreement notification sent by the third terminal, the first terminal prompts a user whether to send the control instruction to the third terminal, so that the third terminal performs data transmission with the second terminal in different connection manners according to the control instruction, so as to implement the video call.

In another embodiment, the control instruction information may also be included in the shared video call connection request sent by the first terminal.

Step S750, establishing a data transmission connection between other terminals through the first terminal.

The control instruction is a forwarding center for performing data transmission by taking the first terminal as the second terminal and the third terminal, and after the first terminal detects that a user triggers the control instruction, the physical storage of the first terminal is virtualized to be a temporary expansion memory, and the temporary expansion memory is used for receiving and transmitting data information sent between the second terminal and the third terminal so as to meet the requirement of data transmission between the second terminal and the third terminal. After receiving the control instruction sent by the first terminal, the third terminal sends a call request to the first terminal through the IP channel of the VoLTE video call connection between the first terminal and the third terminal, the first terminal sends the call request to the second terminal through the IP channel of the VoLTE video call connection between the first terminal and the second terminal, and after the second terminal receives the call request, the IP channel of the VoLTE video call connection between the first terminal and the third terminal and the IP channel of the VoLTE video call connection between the first terminal and the second terminal are opened, the data information between the second terminal and the third terminal is sent to the temporary expansion memory of the first terminal through the respective IP channels, the first terminal sends the data information to the other party through the corresponding IP channel, and the three-party call with low quality and small delay is realized through the mode.

Furthermore, the first terminal establishes, removes and reconfigures the call connection of each party in real time according to parameters such as the ID of the call connection, the signal quality of the two parties of the call, the data volume transmitted by the two parties of the call, and the like, and performs scheduling management of physical storage and temporary expansion of the memory.

And step S760, establishing video call connection between other terminals through VoLTE.

After receiving the shared call connection request sent by the first terminal, the third terminal analyzes the request information to obtain the registration identity information of the second terminal included in the request, for example: the third terminal initiates a call request to the second terminal, the call request is transmitted to an IMS core network and an IMS AS registered by the third terminal through an IMS APN IP channel provided by an LTE/EPC network, and the IMS AS transmits the call request to the second terminal. The second terminal receives a call request sent by the third terminal, and when the second terminal receives the call request, the VoLTE video call connection is established between the second terminal and the third terminal, so that the first terminal, the second terminal and the third terminal realize high-quality and delayed three-party call.

The video call method provided by this embodiment controls a data transmission mode between the second terminal and the third terminal according to the user requirement of the first terminal. When the user selects the high-quality three-party call with delay, the first terminal controls the second terminal and the third terminal to establish the VoLTE-based video call connection. When the user selects the three-party call with low quality but small delay, the first terminal virtualizes the physical storage of the first terminal as a temporary expansion memory so as to meet the data transmission between the second terminal and the third terminal.

As shown in fig. 8, fig. 8 is a schematic diagram of an embodiment of a video call device. The video call device comprises a data processing module 810, an information processing mode 820, a detection module 830, a connection module 840, a resource coordination module 850 and a data sharing module 860.

And the data processing module 810 is configured to establish a VoLTE video call connection with two or more terminals.

The mobile terminal comprises two or more chips and radio frequency transmitters, and can simultaneously support two or more SIM cards to carry out simultaneous conversation. The mobile terminal supports VoLTE to carry out video call, after a broadcast receiving module 111 of the mobile terminal receives cell broadcast, an EPC core network is accessed through an LTE wireless network by using a mobile communication module 112, the EPC core network establishes default load for a user and is accessed to the internet, so that the mobile terminal can normally use internet service. In the process that a mobile terminal accesses an LTE/EPC network, the network informs the mobile terminal that the network supports VoLTE service, the mobile terminal initiates an IMS APN bearer establishment request, the LTE/EPC establishes an IMS APN default bearer for the mobile terminal, the mobile terminal accesses an IMS core network for registration through an IMS APN IP channel provided by the LTE/EPC network, and after the authentication is passed, the IMS core network completes the registration of a user in a corresponding IMS AS according to the IMS subscription information of the user. Subsequently, the mobile terminal initiates a call, the call request is sent to an IMS core network and an IMS AS registered by the mobile terminal through an IMS APN IP channel provided by an LTE/EPC network, and the IMS AS is responsible for processing the call of the mobile terminal; the IMS core network is responsible for routing according to the called number in the call request and connecting the called party, if the called party is positioned in the IMS network, the called party is connected in the IMS network, and if the called party is other operator users or the called party is positioned in the 2/3G network, the IMS core network connects the call to a circuit domain gateway. Before the connection of the user media plane is established, the IMS core network informs the PCRF, an IP channel special for IMS APN is established for the VoLTE user in the LTE/EPC network, and the voice service quality of the user is guaranteed.

In the present embodiment, a first terminal 800 is included, and the first terminal 800 serves as a call initiator, and the first terminal 800 performs a VoLTE video call with a second terminal and a third terminal. In other embodiments, the number of terminals connected to the first terminal 800 for VoLTE video call may be three, four, etc. according to the actual situation. The first terminal 800 comprises a first SIM card and a second SIM card, and a user performs VoLTE video call connection with the second terminal through the first SIM card and performs VoLTE video call connection with the third terminal through the second SIM card. At this time, the second terminal and the third terminal do not have VoLTE video call connection therebetween, and both the second terminal and the third terminal independently have call connection with the first terminal 800.

The first terminal 800 establishes a first VoLTE video call connection with the second terminal by using the first SIM card and a second VoLTE video call connection with the third terminal by using the second SIM card through an active call mode. In other embodiments, the first terminal 800 may also establish VoLTE video call connections with the second terminal and the third terminal respectively in a passive manner, that is, the second terminal sends a call request to the first terminal 800, the first terminal 800 accesses the call request through the first SIM card to establish a first VoLTE video call connection with the second terminal, the third terminal sends a call request to the first terminal 800, and the first terminal 800 accesses the call request through the second SIM card to establish a first VoLTE video call connection with the third terminal. In other embodiments, the first terminal 800 may establish a VoLTE video call connection with the second terminal and the third terminal respectively through an active and passive combination manner, that is, the first terminal 800 actively sends a call request to the second terminal through the first SIM card, the second terminal accesses the call request, so that the first terminal 800 establishes a first VoLTE video call connection with the second terminal through the first SIM card, at this time, the third terminal sends a call request to the first terminal 800, the first terminal 800 accesses the call request through the second SIM card, and establishes a second VoLTE video call connection with the third terminal through the second SIM card.

An information processing mode 820 for sending a shared call connection request to one of the two or more terminals.

When the first terminal 800 is independently connected with the second terminal and the third terminal through the mobile communication module 112, if the second terminal wants to perform a VoLTE video call connection with the third terminal to realize a three-way call, the second terminal sends a sharing notification to the first terminal 800 to inform that the first terminal wants to perform a VoLTE video call connection with the third terminal.

The manner in which the second terminal sends the sharing notification to the first terminal 800 may be as follows: when the first terminal 800 performs a VoLTE video call with the second terminal and the third terminal through the data processing module 810, the second terminal and the third terminal may send a request to the first terminal 800 to obtain the information of the other terminal that the first terminal 800 is performing the VoLTE video call at this time, in the first terminal 800, the display unit 151 may remind the user of the first terminal 800 in a prompt box manner whether to allow the second terminal and the third terminal to obtain the information of the other terminal, that is, the second terminal knows that the first terminal 800 still performs the VoLTE video call connection with the third terminal at this time, and the third terminal knows that the first terminal 800 still performs the VoLTE video call connection with the second terminal at this time. And after the second terminal and the third terminal acquire the information of the other party, the information can be displayed on respective video call display interfaces in a list or icon mode. When the second terminal detects that the icon representing the third terminal is touched, the second terminal sends a sharing notification to the first terminal 800 to inform that the second terminal wants to perform VoLTE video call connection with the third terminal.

After the first terminal 800 receives the sharing notification, the information processing mode 820 obtains the registration identity information of the second terminal, and sends a sharing call connection request to the third terminal in an encrypted manner according to the requirement.

The detecting module 830 is configured to detect whether the terminal receiving the shared call connection request establishes a VoLTE video call connection with the other terminals of the two or more terminals according to the shared call connection request.

The connection module 840 is configured to, after receiving the shared call connection request sent by the first terminal 800, the third terminal analyzes the request information to obtain the registration identity information of the second terminal included in the request, where the registration identity information includes: the third terminal initiates a call request to the second terminal, the call request is transmitted to an IMS core network and an IMS AS registered by the third terminal through an IMS APN IP channel provided by an LTE/EPC network, and the IMS AS transmits the call request to the second terminal. The second terminal receives a call request sent by the third terminal, and when the second terminal receives the call request, a VoLTE video call connection is established between the second terminal and the third terminal, so that the first terminal 800, the second terminal and the third terminal realize a three-way video call.

The detecting module 830 is further configured to detect whether system resources of the first terminal 800 reach a preset value.

During the VoLTE video call with the second terminal and the third terminal, the first terminal 800 may occupy system resources of the first terminal 800, where the system resources include radio frequency resources, signal quality, RAM, available power, available flow of the SIM card, and the like. The first terminal 800 presets a threshold for each system resource, and periodically detects whether each system resource reaches the preset threshold during the VoLTE video call between the first terminal 800 and the second and third terminals.

The resource coordination module 850 is configured to adjust the VoLTE video call quality between the first terminal 800 and different terminals according to the priority of the VoLTE video call established between the first terminal 800 and two or more terminals.

When the first terminal 800 establishes the VoLTE video call connection with another terminal, a tag is set on the VoLTE video call connection, where the tag represents the priority of different VoLTE video call connections, the VoLTE video call connection with a higher priority represents that the VoLTE video call connection with the lower priority occupies the opposite terminal of the VoLTE video call connection as an important contact person and needs to preferentially ensure the call quality, and the importance of the opposite terminal of the VoLTE video call connection with the lower priority is inferior. The first terminal 800 may determine the priority of the VoLTE video call connection when setting the tag according to the following manner conditions:

in a first manner, the priority of the VoLTE video call connection occupying the SIM card is determined according to the identity of the primary and secondary SIM cards of different first terminals 800, for example, when the first SIM card is the primary card and the second SIM card is the secondary card, the priority of the VoLTE video call connection established by the first SIM card is high, and the priority of the VoLTE video call connection established by the second SIM card is low;

in a second manner, the priority of the VoLTE video call connection established with the contact is determined according to the level of the contact in the address book, the user of the first terminal 800 may set the level of different contacts in the address book, and the level is set as a high contact, so that the priority of the VoLTE video call connection established between the first terminal 800 and the contact is high, for example, the level of "mom" in the address book by the user of the first terminal 800 is set to be high, the level of "express" in the address book is set to be first, the priority of the VoLTE video call connection established between the first terminal 800 and "mom" is high, and the priority of the VoLTE video call connection established with "express" is low.

In the third mode, the priority of the VoLTE video call connection is determined according to the time sequence of the VoLTE video call connection establishment, that is, if the first terminal 800 establishes the VoLTE video call connection with the second terminal first and then establishes the VoLTE video call connection with the third terminal, the priority of the VoLTE video call connection established with the second terminal is high, and the priority of the VoLTE video call connection established with the third terminal is low.

The detecting module 830 is further configured to detect whether the first terminal 800 receives the control instruction.

In this embodiment, when the third terminal prepares to send a call request to the second terminal, the third terminal sends an agreement notification in advance to the first terminal 800, the agreement notification agrees to share the video call with the second terminal, meanwhile, the third terminal waits for a predetermined time to detect whether a control instruction sent by the first terminal 800 is received, and after receiving the agreement notification sent by the third terminal, the first terminal 800 prompts the user whether to send the control instruction to the third terminal, so that the third terminal performs data transmission with the second terminal in different connection manners according to the control instruction, so as to implement the video call.

In other embodiments, the control instruction information may also be included in the shared video call connection request transmitted by the first terminal 800.

And a data sharing module 860, configured to establish a data transmission connection between other terminals.

The control instruction is a forwarding center for performing data transmission between the second terminal and the third terminal, and when the first terminal 800 detects that the user receives the control instruction through the user input unit 130, the first terminal 800 virtualizes the physical storage in the storage 160 of the first terminal 800 as a temporary extended memory, and the temporary extended memory is used to receive and transmit data information sent between the second terminal and the third terminal, so as to satisfy the data transmission between the second terminal and the third terminal. After receiving the control command transmitted from the first terminal 800, the third terminal transmits a call request to the first terminal 800 through the IP channel of the VoLTE video call connection between the first terminal 800 and the third terminal, the first terminal 800 transmits the call request to the second terminal through the IP channel of the VoLTE video call connection between the first terminal 800 and the second terminal, and when the second terminal receives the call request, the IP channel of the VoLTE video call connection between the first terminal 800 and the third terminal and the IP channel of the VoLTE video call connection between the first terminal 800 and the second terminal are opened, the data information between the second terminal and the third terminal is transmitted to the temporary expansion memory of the first terminal 800 through the respective IP channels, the first terminal 800 transmits the data information to the other party through the corresponding IP channel, and thus, a low-quality and low-delay three-party call is realized.

Further, the first terminal 800 establishes, removes, and reconfigures the call connection of each party in real time according to parameters such as the ID of the call connection, the signal quality of both parties, and the amount of data transmitted by both parties, and performs scheduling management of physical storage and temporary extended memory

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a mobile terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and 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 invention as defined in the appended claims.

Claims

1. A video call method is applied to a first terminal and is characterized in that,

establishing VoLTE video call connection with two or more terminals;

sending a shared call connection request to one of the two or more terminals;

detecting whether the terminal receiving the shared call connection request establishes video call connection with other terminals in the two or more terminals according to the shared call connection request;

if so, the first terminal and the two or more terminals simultaneously carry out the multi-party video call, wherein,

the step of establishing a VoLTE video call connection between the terminal that receives the shared call connection request and the other terminals of the two or more terminals further includes:

and detecting whether the first terminal receives a control instruction, wherein the control instruction refers to that the first terminal is used as a forwarding center for data transmission between the two or more terminals, after the first terminal detects the control instruction triggered by a user, the physical storage of the first terminal is virtualized to be a temporary expansion memory to meet the data transmission between the two or more terminals, the control instruction sent by the first terminal is not detected within a preset time, and the other terminals are connected through the VoLTE.

2. The video call method according to claim 1, wherein the shared call connection request includes VoLTE registration identity information of other terminals of the two or more terminals, and the terminal that receives the shared call connection request sent by the first terminal is a terminal to which the other terminals of the two or more terminals are to be connected.

3. The video call method of claim 1, wherein the step of the first terminal conducting VoLTE video call with the two or more terminals simultaneously further comprises:

detecting whether the system resource of the first terminal reaches a preset value;

when the system resources of the first terminal reach a preset value, adjusting the VoLTE video call quality between the first terminal and different terminals according to the priority of VoLTE video calls established between the first terminal and the two or more terminals.

4. A video call device applied to a first terminal, the device comprising:

the data processing module is used for establishing VoLTE video call connection with two or more terminals;

the information processing module is used for sending a shared call connection request to one of the two or more terminals;

the detection module is used for detecting whether the terminal receiving the shared call connection request establishes VoLTE video call connection with other terminals in the two or more terminals according to the shared call connection request;

a connection module, configured to establish a VoLTE video call connection with other terminals of the two or more terminals according to the shared call connection request when the detection module detects that the terminal receiving the shared call connection request has received the shared call connection request, where the first terminal and the two or more terminals perform VoLTE video calls simultaneously,

the detection module is further used for detecting whether the first terminal receives a control instruction, the control instruction is that the first terminal is used as a forwarding center for data transmission between the two or more terminals, the video call device further comprises a data sharing module, the data sharing module is further used for virtualizing physical storage of the first terminal as a temporary expansion memory after the first terminal detects the control instruction triggered by a user so as to meet data transmission between the two or more terminals, waiting for no control instruction sent by the first terminal within a preset time, and establishing video call connection between other terminals through VoLTE.

5. The video call apparatus according to claim 4, wherein the shared call connection request includes VoLTE registration identity information of the other terminals of the two or more terminals, and wherein the terminal that receives the shared call connection request sent by the first terminal is a terminal to which the other terminals of the two or more terminals are to connect.

6. The video call device according to claim 4, wherein the detecting module is further configured to detect whether the system resource of the first terminal reaches a preset value, and the video call device further comprises a resource coordination module configured to adjust the quality of the VoLTE video call between the first terminal and different terminals according to the priority of the VoLTE video call established between the first terminal and the two or more terminals when the detecting module detects that the system resource of the first terminal reaches the preset value.