WO2018053987A1

WO2018053987A1 - Audio and video data offloading transmission method and device for video call, and server

Info

Publication number: WO2018053987A1
Application number: PCT/CN2017/072975
Authority: WO
Inventors: 赵俊
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-09-26
Filing date: 2017-02-06
Publication date: 2018-03-29
Also published as: CN107872733A

Abstract

Disclosed is an audio and video data offloading transmission method for a video call, comprising: when a user terminal is in a video call, determining, according to a state of a network to which the user terminal is currently connected, whether the user terminal satisfies an offloading transmission requirement; and if so, respectively transmitting, by means of a WLAN and an ETURAN, video data and audio data in the video call conducted by the user terminal. Also disclosed are an audio and video data offloading transmission device for a video call and a server providing audio and video data offloading transmission.

Description

Video call method and device for voice and video offload transmission and server

Technical field

The present application relates to, but is not limited to, the field of wireless data transmission technologies, and in particular, to a video call method and apparatus for voice and video offload transmission and a server.

Background technique

With the popularization of mobile terminals and the large-scale deployment of LTE (Long Term Evolution) networks, the usage rate of LTE is getting higher and higher, and the use of LTE-based video calling functions is also increasing. Video calls are mainly based on the Internet and mobile Internet-based end-to-end video and audio synchronization transmission process. At present, the technical solutions of video calls are mainly divided into pure IP (Internet Protocol, a protocol interconnected by networks), and video calls (such as calls through WeChat phonebook, qq, facetime, etc.), and the ordinary phone process. Video call.

The earliest video call under the mobile internet is realized through the 3G network. The advantage is that it does not need to re-maintain a call list and account, and directly uses the mobile phone number to identify the user, relying on the huge user group and uniqueness of the mobile phone number. You can make a video call with any mobile number. However, due to the limited bandwidth of 3G, the tariff is relatively expensive, so the popularity is not high. With the popularity of LTE, VOLTE (Voice Over LTE, which makes calls through the LTE network) assumes the voice and video call function under the mobile Internet. VOLTE is the iconic service of 4G, and it is also a service promoted by operators. More and more users will be in the later stage. Compared with Internet-based video calls, VOLTE has many advantages:

1. The mobile terminal has convenience;

2. The quality of video and audio calls is high, the delay is small, and the tariff is gradually reduced.

Therefore, it can be foreseen that the video calling function of VOLTE will be widely popular in the future, and the number of users will also increase.

Compared with VOLTE audio calls, the main difference between VOLTE video calls and VOLTE audio calls is that there are more resources when establishing bearers, and the requirements for network quality are higher. The protocol pairs of VOLTE video calls and VOLTE audio calls are shown in Table 1.

Table 1

The SRB (Signaling Radio Bearers) is only used to transmit RRC (Radio Resource Control) and NAS (Non-Access Stratum) messages. SRB1 is used to transmit RRC messages, and SRB2 is used to transmit NAS messages. For the DRB (Data Radio Bearer), the AM DRB is the DRB in the acknowledgment mode, and the UM DRB is the DRB in the acknowledgment mode. In the QoS (Quality of Service) bearer:

QCI (QoS Class Identifier) = 1 indicates voice bearer;

QCI=2 indicates video bearer;

The QCI=5 indicates that the SIP (Session Initiation Protocol)/SDP (Session Description Protocol) transmits an IMS (IP Multimedia Subsystem) signaling bearer;

QCI=8/9 indicates the general Internet service bearer.

It can be seen from Table 1 that a video call has more UM DRBs with QCI=2 than pure audio calls.

Existing video calls are transmitted in a single way, either using a mobile network or using an internetwork (such as wired, WLAN (Wireless Local Area Networks), etc.). Many operators have introduced VOWIFI (Voice Over WIFI) to solve home-wide network coverage and voice services, but whether it is VOWIFI or VOLTE video calls, or bear On wifi, it is either carried on LTE. When it is carried on wifi, due to the lack of QoS guarantee of wifi, the voice and video call effects are difficult to be guaranteed; while the bearer is on LTE, although the bandwidth utilization and bandwidth of LTE are relatively high, but in some special conditions, such as the network. In a complex environment with congestion or network signals, the bandwidth resources of the base station will also become limited, and the resources provided to the terminal will be less. At this time, using the video call function will greatly increase the base station load, and at the same time, due to the lack of bandwidth resources, Affect the quality of video calls and affect the user experience, such as in some public places, railway stations, sports fields, downtown squares, etc. Therefore, when there are many LTE network users, the bandwidth is insufficient, and the use of video calls will greatly increase the network bandwidth load. In order to meet the user requirements, the server can only reduce the video call quality or reduce the bandwidth used by other users to complete the call request, which affects the call. User experience and feelings. Moreover, video calls with limited network resources can also lead to an increase in call failure rate.

Summary of invention

The embodiments of the present invention provide a video call method, a device, and a server for voice and video offload transmission, which are used to solve the problem that a video call is caused when the LTE network resources are insufficient, resulting in poor call quality and high call failure rate.

The embodiment of the invention provides a video call method for voice and video offload transmission, including:

When the user terminal performs a video call, determining whether the user terminal meets the offload transmission condition according to the network condition currently connected by the user terminal;

When the user terminal meets the offload transmission condition, the video data and the voice data in the video call of the user terminal are respectively transmitted through the WLAN and ETURAN (Evolved Universal Terrestrial Radio Access Network).

In an exemplary embodiment, the process of determining whether the user terminal meets the offload transmission condition includes:

Determining whether the user terminal is configured to perform a video call by using a offloading manner;

It is determined whether the user terminal is connected to an available WLAN and ETURAN.

In an exemplary embodiment, the video call method further includes: setting a manner of a video call, and the manner of the video call includes a split mode.

Determining whether the resources of the ETURAN connected to the user terminal are sufficient;

Determining whether the user terminal is connected to an available WLAN.

In an exemplary embodiment, determining whether the resource of the ETURAN connected by the user terminal is sufficient includes determining whether the resource of the ETURAN is sufficient according to the current network user quantity and resource remaining condition of the ETURAN.

In an exemplary embodiment, determining whether the user terminal is connected to the available WLAN includes:

Determining whether the WLAN currently connected to the user terminal is within the legal range of the operator service.

In an exemplary embodiment, video data in the video call is transmitted over a WLAN, and voice data in the video call is transmitted through ETURAN.

The embodiment of the invention further provides a video communication device for voice and video offload transmission, comprising:

The offloading transmission condition determining unit is configured to determine, according to the network condition currently connected by the user terminal, whether the user terminal meets the offload transmission condition when the user terminal performs a video call;

And a data transmission unit configured to transmit video data and voice data in the video call of the user terminal through the WLAN and the ETURAN, respectively, when the user terminal meets the offload transmission condition.

In an exemplary embodiment, the offload transmission condition determining unit includes:

a video call mode detecting subunit, configured to determine whether the user terminal is configured to perform a video call by using a offloading manner;

The network connection detecting subunit is configured to determine whether the user terminal is connected to the available WLAN and ETURAN.

In an exemplary embodiment, the video communication device further includes:

The video call mode setting unit is connected to the video call mode detecting subunit and configured to set a video call mode.

a resource detecting subunit configured to determine whether the resources of the ETURAN connected to the user terminal are sufficient;

The WLAN connection detecting subunit is configured to determine whether the user terminal is connected to an available WLAN.

In an exemplary embodiment, the data transmission unit includes:

a video acquisition subunit configured to acquire video data in a video call of the user terminal;

a video codec subunit, connected to the video acquisition subunit, configured to encode and decode the obtained video data;

a video transmission subunit, connected to the video codec subunit, configured to transmit the coded video data through a WLAN;

a voice acquisition subunit configured to acquire voice data in a video call of the user terminal;

a voice codec subunit, connected to the voice acquisition subunit, configured to encode and decode the obtained voice data;

The voice transmission subunit is connected to the voice codec subunit and configured to transmit the coded voice data through the ETURAN.

The embodiment of the invention further provides a server for providing voice and video offload transmission, including:

The network transmission conversion unit is configured to convert the data transmitted in the WLAN to the ETURAN for transmission during data transmission with the user terminal, or convert the data transmitted in the ETURAN to the WLAN for transmission.

The embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented by the processor to implement the video call method of the voice and video offload transmission described above.

The beneficial effects of the present invention are as follows:

In the embodiment of the present invention, the video data and the voice data in the video call are separately transmitted through the WLAN and the ETURAN, and the bandwidth of the LTE network occupied by the VOLET video call is reduced in the case of insufficient LTE network resources, thereby ensuring the quality of the video call. , improved the success rate of video call calls.

BRIEF abstract

1 is a flowchart of a video call method for voice and video offload transmission according to Embodiment 2 of the present invention;

2 is a flow chart of a video call method for voice and video offload transmission according to Embodiment 3 of the present invention; Cheng Tu

3 is a flowchart of a video call method for voice and video offload transmission according to Embodiment 4 of the present invention;

4 is a structural diagram of a video call device for voice and video offload transmission according to Embodiment 5 of the present invention;

5 is a structural diagram of a video call device for voice and video offload transmission according to Embodiment 6 of the present invention;

6 is a schematic diagram of an audio and video offload transmission to a server according to Embodiment 7 of the present invention;

FIG. 7 is a flowchart of a process for initiating a video call by a calling terminal according to Embodiment 8 of the present invention; FIG.

FIG. 8 is a flow chart of receiving a video call by a called terminal according to Embodiment 9 of the present invention.

Detailed

In order to solve the problem that the video call in the LTE network is insufficient, the call quality is poor, and the call failure rate is high. The embodiment of the invention provides a video call method and device for voice and video offload transmission and a server. The embodiments of the present invention are further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the embodiments described herein are merely illustrative of the application and are not limiting.

Example 1

The video call method for voice and video offload transmission in the embodiment of the present invention first determines whether the user terminal meets the offload transmission condition according to the network condition currently connected by the user terminal when the user terminal performs a video call; When the user terminal meets the offload transmission condition, the video data and the voice data in the video call of the user terminal are transmitted through the WLAN and the ETURAN, respectively.

At present, WLANs are used more and more widely. In particular, there are many wifi hotspots provided by operators in public places. The hotspot service packages provided by operators are also cheaper than mobile traffic, and some are even free. For how to guarantee the quality of the video call under the limited bandwidth resources, the embodiment uses the wifi hotspot arranged by the operator of the public place to carry the video signal on the WLAN network, and the voice signal is still carried on the ETURAN network. VOLTE transmission. This will reduce VOLTE The system bandwidth occupied by the video call improves the network usage rate, and fully utilizes the advantages of the quality assurance of the LTE network to ensure accurate and clear transmission of voice information during the video call, thereby ensuring the quality of the voice call and also completing the video. transmission.

Example 2

A video call method for voice and video offload transmission according to an embodiment of the present invention is as shown in FIG. 1 , and includes the following steps:

In step s101, a method of setting a video call is set. In this embodiment, the manner of the video call is set to a split mode.

In step s102, the video call process is entered.

In step s103, it is determined whether the user terminal is configured to perform a video call by using a split mode. If yes, go to step s104, otherwise perform a normal VOLTE video call.

In step s104, it is determined whether the user terminal is connected to the available WLAN and ETURAN. If yes, go to step s105, otherwise the call will fail.

Step s105: The video data and the voice data in the video call of the user terminal are transmitted through the WLAN and the ETURAN, respectively. In this embodiment, the video data in the video call is transmitted through the WLAN, and the voice data in the video call is transmitted through the ETURAN.

With the video call mode of this embodiment, when the video call mode is set to the offload mode, regardless of whether the current LTE network resource is sufficient, the video call is performed in a offload manner as long as the available WLAN and ETURAN are connected.

Example 3

A video call method for voice and video offload transmission according to an embodiment of the present invention is as shown in FIG. 2, and includes the following steps:

In step s201, the video call process is entered.

In step s202, it is determined whether the resources of the ETURAN connected to the user terminal are sufficient. If yes, a normal VOLTE video call is made, otherwise step s203 is performed. In this embodiment, it is determined whether the resources of the ETURAN are sufficient according to the current network user number and resource remaining condition of the ETURAN.

In step s203, it is determined whether the user terminal is connected to an available WLAN. If yes, go to step s204, otherwise the call will fail. In this embodiment, even if the WLAN is currently connected, it is determined whether the WLAN currently connected to the user terminal is within the legal range of the operator service.

Step s204: The video data and the voice data in the video call of the user terminal are transmitted through the WLAN and the ETURAN, respectively. In this embodiment, the video data in the video call is transmitted through the WLAN, and the voice data in the video call is transmitted through the ETURAN.

With the video call mode of the embodiment, the video call is performed in a shunt manner as long as the LTE network resources are insufficient and the available WLAN is connected.

Example 4

A video call method for voice and video offload transmission according to an embodiment of the present invention is as shown in FIG. 3, and includes the following steps:

In step s301, a method of setting a video call is set. In this embodiment, the manner of the video call is set to a split mode.

In step s302, the video call process is entered.

In step s303, it is determined whether the user terminal is configured to perform a video call by using the offloading mode. If yes, go to step s304, otherwise perform a normal VOLTE video call.

In step s304, it is determined whether the resources of the ETURAN connected to the user terminal are sufficient. If yes, a normal VOLTE video call is made, otherwise step s305 is performed. In this embodiment, it is determined whether the resources of the ETURAN are sufficient according to the current network user number and resource remaining condition of the ETURAN.

In step s305, it is determined whether the user terminal is connected to an available WLAN. If yes, go to step s306, otherwise the call will fail. In this embodiment, even if the WLAN is currently connected, it is determined whether the WLAN currently connected to the user terminal is within the legal range of the operator service.

Step s306, the video data and the voice data in the video call of the user terminal are transmitted through the WLAN and the ETURAN, respectively. In this embodiment, the video data in the video call is transmitted through the WLAN, and the voice data in the video call is transmitted through the ETURAN.

In the video call mode of this embodiment, when the video call mode is set to the offload mode, only when the LTE network resources are insufficient, and the available WLAN is connected, the traffic is viewed in a split manner. Frequency call. The order of the three determination processes of step s303, step s304, and step s305 can be adjusted to each other.

Example 5

As shown in FIG. 4, a video call device for voice and video offload transmission according to an embodiment of the present invention includes a video call mode setting unit 41, a offload transmission condition determination unit 42, and a data transmission unit 43, wherein the offload transmission condition determination unit 42 It is connected to the video call mode setting unit 41 and the data transfer unit 43, respectively.

The video call mode setting unit 41 is configured to set a video call mode; the offload transmission condition determining unit 42 is configured to determine, according to the network condition currently connected by the user terminal, whether the user terminal meets the offload transmission when the user terminal performs a video call. The data transmission unit 43 is configured to transmit the video data and the voice data in the video call of the user terminal through the WLAN and the ETURAN, respectively, when the user terminal meets the offload transmission condition.

The offload transmission condition determining unit 42 includes a video call mode detecting subunit 421 and a network connection detecting subunit 422, wherein the video call mode setting unit 41 is connected to the video call mode detecting subunit 421. The video call mode detecting sub-unit 421 is configured to determine whether the user terminal is configured to perform a video call by using a split mode; the network connection detecting sub-unit 422 is configured to determine whether the user terminal is connected to an available WLAN and ETURAN.

The data transmission unit 43 includes a video acquisition subunit 431, a video codec subunit 432, a video transmission subunit 433, a voice acquisition subunit 434, a speech codec subunit 435, and a voice transmission subunit 436. The video codec sub-unit 432 is connected to the video acquisition sub-unit 431 and the video transmission sub-unit 433, respectively, and the speech codec sub-unit 435 is connected to the speech acquisition sub-unit 434 and the voice transmission sub-unit 436, respectively.

The video acquisition sub-unit 431 is configured to acquire video data in a video call of the user terminal; the video codec sub-unit 432 is configured to encode and decode the acquired video data; and the video transmission sub-unit 433 is configured to encode and decode the video data. The video data is transmitted through the WLAN; the voice acquisition sub-unit 434 is configured to acquire voice data in the video call of the user terminal; the voice codec sub-unit 435 is configured to encode and decode the acquired voice data; and the voice transmission sub-unit 436 is configured. In order to transmit the coded voice data through ETURAN.

Example 6

As shown in FIG. 5, a video call device for voice and video offload transmission according to an embodiment of the present invention includes a shunt transmission condition judging unit 51 and a data transmission unit 52, wherein the shunt transmission condition judging unit 51 and the data transmission unit 52 are connected. The offloading transmission condition determining unit 51 is configured to determine, according to the network condition currently connected by the user terminal, whether the user terminal meets the offload transmission condition when the user terminal performs a video call; the data transmission unit 52 is configured to be in compliance with the user terminal. When the transmission condition is offloaded, the video data and the voice data in the video call of the user terminal are transmitted through the WLAN and the ETURAN, respectively.

The shunt transmission condition judging unit 51 includes a resource detecting subunit 511 and a WLAN connection detecting subunit 512. The resource detection sub-unit 511 is configured to determine whether the resources of the ETURAN connected to the user terminal are sufficient; the WLAN connection detection sub-unit 512 is configured to determine whether the user terminal is connected to an available WLAN.

The data transmission unit 52 includes a video acquisition sub-unit 521, a video codec sub-unit 522, a video transmission sub-unit 523, a speech acquisition sub-unit 524, a speech codec sub-unit 525, and a voice transmission sub-unit 526. The video codec subunit 522 is connected to the video acquisition subunit 521 and the video transmission subunit 523, respectively, and the speech codec subunit 525 is connected to the voice acquisition subunit 524 and the voice transmission subunit 526, respectively.

The video acquisition sub-unit 521 is configured to acquire video data in a video call of the user terminal; the video codec sub-unit 522 is configured to encode and decode the acquired video data; and the video transmission sub-unit 523 is configured to encode and decode the video data. The video data is transmitted through the WLAN; the voice acquisition sub-unit 524 is configured to acquire voice data in the video call of the user terminal; the voice codec sub-unit 525 is configured to encode and decode the acquired voice data; and the voice transmission sub-unit 526 is configured. In order to transmit the coded voice data through ETURAN.

Example 7

A server for providing voice and video offload transmission according to an embodiment of the present invention includes a network transmission conversion unit configured to convert data transmitted in a WLAN to an ETURAN for transmission during data transmission with a user terminal, or to transmit in ETURAN The data transmitted in is converted to WLAN for transmission. That is, the server must have the ability to convert the transport bearer, which can convert the WLAN bearer into EUTRAN and convert the EUTRAN bearer into WLAN. In this embodiment, a schematic diagram of audio and video offload transmission to the server is shown in FIG. 6, and the video is separated in the video call content. And audio, the video is transmitted to the server on the WLAN or EUTRAN through codec, and the audio is transmitted to the server on the EUTRAN after being coded and decoded. Among them, the terminal collects video and audio separately during the video call, and the camera and the microphone are separately collected. The traditional VOLTE video call is also transmitted separately, but the video can only be transmitted to the server through the EUTRAN. This embodiment improves on the transmission of video information, increases the structure in which video information transmission can be transmitted to the server through WLAN, and the video and audio information are finally aggregated to the server.

Example 8

As shown in FIG. 7 , a process for initiating a video call of a calling terminal to transmit a video call according to an embodiment of the present invention includes the following steps:

In step s701, the terminal initiates a VOLTE video call.

In step s702, it is determined whether the network resource is sufficient. If yes, go to step s705, otherwise go to step s703. In this embodiment, after the terminal initiates a VOLTE video call, it determines whether a normal bearer can be performed through a series of measurements and information acquisition of the current network status, for example, current network bandwidth usage, resource allocation, and mobile phone reporting information, current Whether the WLAN network is within the legal scope of the carrier service, whether the current setting status of the mobile phone is permitted, and the like. If the current network cannot meet the VOLTE video call that is completely carried on the EUTRAN, the terminal will send a video call to the terminal to try the video offload mode.

In step s703, it is judged whether or not the condition for performing the offload transmission is satisfied. If yes, go to step s704, otherwise go to step s706.

In step s704, the terminal starts to offload the transmitted video call. In this embodiment, when both the terminal and the network determine that the current environment can perform video call for voice and video offload transmission, the video call of the offloaded transmission starts.

In step s705, a normal VOLTE video call carried on the EUTRAN is performed.

In step s706, the video call fails to be established. In this embodiment, when the terminal or the network determines that the video call of the voice and video offload transmission cannot be performed in the current environment, the current call fails.

This embodiment is a method for the calling terminal to implement the video and audio offloading function. The existing terminals supporting the VOLTE and the WLAN can meet the requirements required by the embodiment in hardware. The current upper layer control protocol does not need to be greatly improved, but a new one is added when the bearer is built. The bearer method is adopted, so that the original video signal transmission mode is changed from EUTRAN to WLAN to the server; and the audio signal transmission mode is unchanged, thereby completing the function of the offload transmission. This bearer method can be selected by the user or automatically executed after the network judges the condition. It can be judged by the number of current network users, the remaining resources, and whether the wifi currently connected by the user is legal. When all the conditions are met, the VOLTE video call of the offload transmission mode is started.

Example 9

The receiving process of the called terminal for offloading the video call in the embodiment of the present invention is as shown in FIG. 8 and includes the following steps:

In step s801, the terminal receives a video call application.

In step s802, it is determined whether the network resource is sufficient. If yes, go to step s805, otherwise go to step s803. In this embodiment, after receiving the video call request, the terminal determines whether the normal bearer can be performed through a series of measurements and information acquisition of the current network status, for example, current network bandwidth usage, resource allocation, and mobile phone reporting information. Whether the WLAN network is within the legal scope of the carrier service, whether the current setting status of the mobile phone is permitted, and the like. If the current network cannot meet the VOLTE video call that is completely carried on the EUTRAN, it will be sent to the terminal to try to receive video calls in the video offload mode.

In step s803, it is judged whether or not the condition for performing the offload transmission is satisfied. If yes, go to step s804, otherwise go to step s806.

In step s804, the terminal starts to offload the transmitted video call. In this embodiment, when both the terminal and the network determine that the current environment can perform video call for voice and video offload transmission, the video call of the offloaded transmission starts.

In step s805, a normal VOLTE video call carried on the EUTRAN is performed.

In step s806, receiving the video call fails. In this embodiment, when the terminal or the network determines that the video call of the voice and video offload transmission cannot be performed in the current environment, the video call fails to be received this time.

In this embodiment, the called terminal implements a video and audio offload function, and the called terminal determines the current network status. If the network is good, or the condition is not implemented, the network is notified to change the receiver bearer to the normal EUTRAN mode; Split transmission, the server will match The transmission mode is split transmission. This bearer method can be selected by the user or automatically executed after the network judges.

In addition, an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, the computer executable instructions being implemented by a processor to implement the video call method of the voice and video offload transmission.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and functional blocks/units of the methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical units; for example, one physical component may have multiple functions, or one function or step may be composed of several physical The components work together. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer readable medium, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer. Moreover, it is well known to those skilled in the art that communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .

While the exemplary embodiments of the present application have been disclosed for illustrative purposes, those skilled in the art will recognize that various modifications, additions and substitutions are possible. Therefore, the scope of the present application should not be limited to the embodiments described above.

Industrial applicability

The embodiment of the present invention provides a video call method and device for voice and video offload transmission, and a server, which is configured to transmit video data and voice data in a video call separately through WLAN and ETURAN, in case of insufficient LTE network resources. The VOLET video call reduces the bandwidth of the LTE network, ensures the quality of the video call, and improves the success rate of the video call.

Claims

A video call method for voice and video offload transmission includes:

When the user terminal performs a video call, determining whether the user terminal meets the offload transmission condition according to the network condition currently connected by the user terminal;

When the user terminal meets the offload transmission condition, the video data and the voice data in the video call of the user terminal are respectively transmitted through the wireless local area network WLAN and the evolved universal terrestrial radio access network ETURAN.
The video call method for voice and video offload transmission according to claim 1, wherein the process of determining whether the user terminal meets the offload transmission condition comprises:

Determining whether the user terminal is configured to perform a video call by using a offloading manner;

It is determined whether the user terminal is connected to an available WLAN and ETURAN.
The video call method for voice and video offload transmission according to claim 2, wherein the video call method further comprises: setting a video call mode, wherein the video call mode comprises a split mode.
The video call method for voice and video offload transmission according to claim 1, wherein the process of determining whether the user terminal meets the offload transmission condition comprises:

Determining whether the resources of the ETURAN connected to the user terminal are sufficient;

Determining whether the user terminal is connected to an available WLAN.
The video call method for voice and video offload transmission according to claim 4, wherein the determining whether the resource of the ETURAN connected to the user terminal is sufficient includes:

Whether the resources of the ETURAN are sufficient according to the current network user number and resource remaining condition of the ETURAN.
The video call method for voice and video offload transmission according to claim 4, wherein the determining whether the user terminal is connected to the available WLAN comprises:

Determining whether the WLAN currently connected to the user terminal is within the legal range of the operator service.
The video call method for voice and video offload transmission according to any one of claims 1 to 6, wherein the video data in the video call is transmitted through a WLAN, in the video call Voice data is transmitted via ETURAN.
A video communication device for voice and video offload transmission, comprising:

The offloading transmission condition determining unit is configured to determine, according to the network condition currently connected by the user terminal, whether the user terminal meets the offload transmission condition when the user terminal performs a video call;

And a data transmission unit configured to transmit the video data and the voice data in the video call of the user terminal through the wireless local area network WLAN and the evolved universal terrestrial radio access network ETURAN, respectively, when the user terminal meets the offload transmission condition.
The video communication device for voice and video offload transmission according to claim 8, wherein the offload transmission condition determination unit comprises:

a video call mode detecting subunit, configured to determine whether the user terminal is configured to perform a video call by using a offloading manner;

The network connection detecting subunit is configured to determine whether the user terminal is connected to the available WLAN and ETURAN.
The video communication device for voice and video offload transmission according to claim 9, wherein the video communication device further comprises:

The video call mode setting unit is connected to the video call mode detecting subunit and configured to set a video call mode.
The video communication device for voice and video offload transmission according to claim 8, wherein the offload transmission condition determination unit comprises:

a resource detecting subunit configured to determine whether the resources of the ETURAN connected to the user terminal are sufficient;

The WLAN connection detecting subunit is configured to determine whether the user terminal is connected to an available WLAN.
The video communication device for voice and video offload transmission according to any one of claims 8 to 11, wherein the data transmission unit comprises:

a video acquisition subunit configured to acquire video data in a video call of the user terminal;

a video codec subunit, connected to the video acquisition subunit, configured to obtain the view Frequency data is encoded and decoded;

a video transmission subunit, connected to the video codec subunit, configured to transmit the coded video data through a WLAN;

a voice acquisition subunit configured to acquire voice data in a video call of the user terminal;

a voice codec subunit, connected to the voice acquisition subunit, configured to encode and decode the obtained voice data;

The voice transmission subunit is connected to the voice codec subunit and configured to transmit the coded voice data through the ETURAN.
A server that provides voice and video offload transmission, including:

a network transmission conversion unit configured to convert data transmitted in the wireless local area network WLAN to an Evolved Universal Terrestrial Radio Access Network (ETURAN) for transmission during data transmission with the user terminal, or to convert data transmitted in the ETURAN to the WLAN Transfer in.