WO2018188418A1 - Data transmission method, terminal and core network device - Google Patents

Abstract

A data transmission method comprises: a terminal acquiring at least two types of candidate access networks; the terminal dividing, according to a service quality level, a service data flow to be transmitted into at least two data flows to be transmitted, the at least two data flows to be transmitted satisfying a preset synchronization condition; the terminal determining from the candidate access networks, according to the service quality level of each data flow to be transmitted of the at least two data flows to be transmitted, an access network corresponding to each data flow to be transmitted; and the terminal transmitting, by means of the access network corresponding to said each data flow to be transmitted, said each data flow to be transmitted.

Description

Data transmission method, terminal and core network device Technical field

The present disclosure relates to, but is not limited to, the field of communication technologies, and in particular, to a data transmission method, a terminal, and a core network device.

Background technique

With the popularity of the network, the application of video calls has become more and more widespread. However, a high-quality video call requires a large amount of data transmission resources on the network. When the network is busy, a large number of users simultaneously use the video call service, which causes the network load to increase.

In the process of transmitting the service data stream of the video call in the network, if the network load is heavy, the network delays the forwarding of the data packet sent after the network, so that the transmission delay of the data packet in the service data flow changes according to the load of the network.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

For the case of the service data stream of the network transmission video call, when the network load changes greatly, the transmission delay of the data packet carrying the image or the sound data from the sender of the video call to the receiver is unstable, thereby causing no picture or sound. continuous.

The embodiments of the present disclosure provide a data transmission method, a terminal, and a core network device, which can reduce the transmission load of the network on the basis of ensuring delay stability of video image or sound data transmission.

An embodiment of the present disclosure provides a data transmission method, where the method includes:

The terminal acquires at least two types of candidate access networks;

The terminal divides the service data stream to be transmitted into at least two data streams to be transmitted according to the quality of service level; and the preset synchronization conditions are met between the at least two data streams to be transmitted;

Determining, by the terminal, the access network corresponding to each to-be-transmitted data stream from the candidate access network according to a quality of service level of each of the at least two to-be-transmitted data streams;

The terminal transmits the each data stream to be transmitted through the access network corresponding to each data stream to be transmitted.

In an exemplary embodiment, the at least two data streams to be transmitted are a voice data stream and a video image data stream in a video call.

In an exemplary embodiment, the determining, according to a quality of service level of each of the at least two data streams to be transmitted, determining the data stream to be transmitted from the candidate access network Corresponding access networks, including:

The terminal sorts the at least two types of candidate access networks according to service capability levels of various types of candidate access networks;

The terminal correspondingly associates each of the to-be-transmitted data streams with the at least two types of access networks in order from highest to lowest, and obtains an access network corresponding to each of the to-be-transmitted data streams.

In an exemplary embodiment, the terminal acquires at least two types of candidate access networks, including:

The terminal acquires at least two access resources; the at least two access resources correspond to the at least two types of access networks, and any access resource corresponds to one access network;

Determining the at least two candidate access networks according to the at least two access resources.

In an exemplary embodiment, the terminal acquires at least two access resources, including:

The terminal sends a resource request to the first core network device, where the resource request is used to request to transmit at least two access resources of the at least two data streams to be transmitted; and the access network corresponding to the first core network device a first access network of the at least two types of access networks;

The terminal receives the resource indication sent by the first core network device, where the resource indication is used to indicate that the terminal transmits at least two data streams to be transmitted through at least two types of access networks.

In an exemplary embodiment, before the terminal sends a resource request to the first core network device, the method further includes:

Transmitting, by the terminal, the multi-network access capability information to the first core network device, where the multi-network access capability information indicates that the terminal has access to the second access in the at least two types of access networks The ability of the network.

In an exemplary embodiment, the at least two types of access networks further include a second access network;

Sending, by the terminal, a resource request to the first core network device, including:

The terminal sends a first resource request to the first core network device, where the first resource request is used to request at least one first access resource, where the first access resource corresponds to the first access network;

The terminal sends a second resource request to the first core network device, where the second resource request is used to request at least one second access resource, and the second access resource corresponds to the second access network.

In an exemplary embodiment, the at least two data streams to be transmitted are M to be transmitted data streams, and the at least two types of access networks are M access networks; M is an integer greater than or equal to 2. The resource request is used to request to transmit M access resources of the M to be transmitted data streams;

Receiving, by the terminal, the resource indication sent by the first core network device, including:

Receiving, by the terminal, the first resource indication sent by the first core network device, where the first resource indication includes N first access resources corresponding to the first access network, where N is greater than or equal to 1 and An integer less than M; or,

Receiving, by the terminal, a second resource indication sent by the first core network device, where the second resource indication includes P second connections corresponding to a second access network of the at least two types of access networks Into the resource, P is an integer greater than or equal to 1 and less than M; or,

The terminal receives the first resource indication and the second resource indication sent by the first core network device, where the first resource indication includes N first access resources corresponding to the first access network, where N is An integer greater than or equal to 1 and less than M, the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is greater than or equal to 1 and an integer less than M;

Wherein, the sum of N and P is less than or equal to M.

In an exemplary embodiment, the preset synchronization condition is a synchronization time threshold in which the variance of the time at which the at least two data packets sent at the same time in the at least two data streams arrive at the receiver are less than a threshold. .

In an exemplary embodiment, the at least two types of access networks include: a long term evolution LTE access network, a wireless fidelity WiFi access network, a wideband code division multiple access WCDMA access network, and code division multiple access. There are at least two types of CDMA access networks.

The disclosure also provides a data transmission method, including:

Receiving, by the first core network device, a resource request sent by the first terminal, where the resource request is used to request at least two access resources; and the at least two access resources are used to transmit at least two data flows to be transmitted, where the at least two The preset synchronization condition is met between the two data streams to be transmitted;

The first core network device sends a resource indication to the first terminal, where the resource indication is used to indicate that the first terminal transmits the at least two data streams to be transmitted through at least two types of access networks, The types of access networks correspond to at least one data stream to be transmitted.

In an exemplary embodiment, the access network corresponding to the first core network device is the first access network of the at least two types of access networks;

The at least two to-be-transmitted data streams are M to-be-transmitted data streams, and the at least two types of access networks are M access networks; the resource request is used to request to transmit the M to-be-transmitted data streams. M access resources; M is an integer greater than or equal to 2;

The first core network device sends a resource indication to the first terminal, including:

The first core network device sends a first resource indication to the first terminal, where the first resource indication includes N first access resources corresponding to the first access network, where N is greater than or equal to 1 And an integer less than M; or,

The first core network device sends a second resource indication to the first terminal, where the second resource indication includes P seconds corresponding to the second access network of the at least two types of access networks. Accessing resources, P is an integer greater than or equal to 1 and less than M; or,

The first core network device sends a first resource indication and a second resource indication to the first terminal, where the first resource indication includes N first access resources corresponding to the first access network, where For an integer greater than or equal to 1 and less than M, the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is greater than or An integer equal to 1 and less than M;

Wherein, the sum of N and P is less than or equal to M.

In an exemplary embodiment, the second core network device corresponds to the second access network;

After the first core network device obtains the resource request sent by the first terminal, the method further includes:

The first core network device sends a split resource request to the second core network device, where the split resource request is used to request to transmit a second access of a part of the at least two to-be-transmitted data streams to be transmitted. a resource; the access network corresponding to the second access resource is the second access network;

Receiving, by the second core network device, a traffic off resource indication, where the traffic off resource indication includes the second access resource.

The disclosure also provides a data transmission method, including:

The second core network device obtains a request for a split resource sent by the first core network device, where the split resource request is used to request to transmit an access resource of a part of at least two to-be-transmitted data streams to be transmitted; The data stream to be transmitted satisfies a preset synchronization condition; the type of the access network corresponding to the second core network device is different from the type of the access network corresponding to the first core network device;

The second core network device sends a split resource indication to the first core network device, where the split resource indication includes a second access resource corresponding to the access network corresponding to the second core network device.

The present disclosure also provides a terminal, where the terminal includes:

The first transceiver module is configured to acquire at least two types of candidate access networks;

The processing module is configured to divide the service data flow to be transmitted into at least two data streams to be transmitted according to a quality of service level; the preset synchronization conditions are met between the at least two data streams to be transmitted; a quality of service level of each of the at least two to-be-transmitted data streams, and determining, by the candidate access network, an access network corresponding to each of the to-be-transmitted data streams;

The first transceiver module is further configured to transmit the data stream to be transmitted by using an access network corresponding to each data stream to be transmitted.

In an exemplary embodiment, the processor is further configured to:

Sorting the at least two types of candidate access networks according to service capability levels of various types of candidate access networks;

And each of the to-be-transmitted data streams is in one-to-one correspondence with the at least two types of access networks according to a level from high to low, to obtain an access network corresponding to each of the to-be-transmitted data streams.

The present disclosure also provides a core network device, where the core network device is a first core network device, and the first core network device includes:

a second transceiver module, configured to receive a resource request sent by the first terminal, where the resource request is used to request at least two access resources; and the at least two access resources are used to transmit at least two data streams to be transmitted, where Satisfying a preset synchronization condition between at least two data streams to be transmitted;

The second transceiver module is further configured to send a resource indication to the first terminal, where the resource indication is used to indicate that the first terminal transmits the at least two to-be-transmitted data by using at least two types of access networks. Flow, one type of access network corresponding to at least one data stream to be transmitted.

In an exemplary embodiment, the access network corresponding to the first core network device is the first access network of the at least two types of access networks;

The at least two to-be-transmitted data streams are M to-be-transmitted data streams, and the at least two types of access networks are M access networks; the resource request is used to request to transmit the M to-be-transmitted data streams. M access resources; M is an integer greater than or equal to 2;

The second transceiver module is configured to:

Transmitting, by the first terminal, a first resource indication, where the first resource indication includes N first access resources corresponding to the first access network, where N is an integer greater than or equal to 1 and less than M; or ,

Sending, by the first terminal, a second resource indication, where the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks; Or an integer equal to 1 and less than M; or,

Transmitting, by the first terminal, a first resource indication and a second resource indication, where the first resource indication includes N first access resources corresponding to the first access network, where N is greater than or equal to 1 and less than An integer of M, where the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is an integer greater than or equal to 1 and less than M ;

Wherein, the sum of N and P is less than or equal to M.

The present disclosure also provides a core network device, where the core network device is a second core network device, and the second core network device includes:

a third transceiver module, configured to acquire a split resource request sent by the first core network device, where the split resource request is used to request to access an access resource of a part of at least two to-be-transmitted data streams to be transmitted; The two data streams to be transmitted satisfy a preset synchronization condition; the type of the access network corresponding to the second core network device is different from the type of the access network corresponding to the first core network device;

Sending, by the first core network device, a offload resource indication, where the offload resource indication includes a second access resource corresponding to the access network corresponding to the second core network device.

The present disclosure also provides a terminal, where the terminal includes:

A memory, a processor, and a data transfer program stored on the memory and operable on the processor, the processor performing the following steps when executing the program:

Obtaining at least two types of candidate access networks;

Divide the service data stream to be transmitted into at least two data streams to be transmitted according to a quality of service level; and satisfy a preset synchronization condition between the at least two data streams to be transmitted;

Determining, according to a quality of service level of each of the at least two data streams to be transmitted, an access network corresponding to each data stream to be transmitted from the candidate access network;

And transmitting each of the to-be-transmitted data streams by using an access network corresponding to each of the to-be-transmitted data streams.

In an exemplary embodiment, the program is implemented by the processor to implement the following steps:

Sorting the at least two types of candidate access networks according to service capability levels of various types of candidate access networks;

And each of the to-be-transmitted data streams is in one-to-one correspondence with the at least two types of access networks according to a level from high to low, to obtain an access network corresponding to each of the to-be-transmitted data streams.

The present disclosure also provides a core network device, where the core network device is a first core network device, and the first core network device includes:

A memory, a processor, and a data transfer program stored on the memory and operable on the processor, the processor performing the following steps when executing the program:

Receiving a resource request sent by the first terminal, where the resource request is used to request at least two access resources; the at least two access resources are used to transmit at least two data streams to be transmitted, and the at least two data to be transmitted The preset synchronization conditions are met between the streams;

And sending, by the first terminal, a resource indication, where the resource indication is used to indicate that the first terminal transmits the at least two to-be-transmitted data streams by using at least two types of access networks, where one type of access network corresponds to At least one stream of data to be transmitted.

In an exemplary embodiment, the access network corresponding to the first core network device is the first access network of the at least two types of access networks;

The at least two to-be-transmitted data streams are M to-be-transmitted data streams, and the at least two types of access networks are M access networks; the resource request is used to request to transmit the M to-be-transmitted data streams. M access resources; M is an integer greater than or equal to 2;

The program is implemented by the processor to implement the following steps:

Transmitting, by the first terminal, a first resource indication, where the first resource indication includes N first access resources corresponding to the first access network, where N is an integer greater than or equal to 1 and less than M; or ,

Sending, by the first terminal, a second resource indication, where the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is greater than Or an integer equal to 1 and less than M; or,

Transmitting, by the first terminal, a first resource indication and a second resource indication, where the first resource indication includes N first access resources corresponding to the first access network, where N is greater than or equal to 1 and less than An integer of M, where the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is an integer greater than or equal to 1 and less than M ;

Wherein, the sum of N and P is less than or equal to M.

The present disclosure also provides a core network device, where the core network device is a second core network device, and the second core network device includes:

A memory, a processor, and a data transfer program stored on the memory and operable on the processor, the processor performing the following steps when executing the program:

Acquiring, by the first core network device, a request for a split resource, where the split resource request is used to request to transmit an access resource of a part of at least two to-be-transmitted data streams; the at least two data streams to be transmitted are satisfied a preset synchronization condition; the type of the access network corresponding to the second core network device is different from the type of the access network corresponding to the first core network device;

Sending, by the first core network device, a offload resource indication, where the offload resource indication includes a second access resource corresponding to the access network corresponding to the second core network device.

The present disclosure also provides a storage medium storing a data transmission program, wherein the data transmission program is configured to:

Acquiring at least two types of candidate access networks; dividing the service data stream to be transmitted into at least two data streams to be transmitted according to a quality of service level; and satisfying a preset synchronization condition between the at least two data streams to be transmitted; Determining an access network corresponding to each to-be-transmitted data stream from the candidate access network according to a quality of service level of each of the at least two to-be-transmitted data streams; The access network corresponding to the to-be-transmitted data stream transmits the each data stream to be transmitted.

Embodiments of the present disclosure also provide a computer readable storage medium storing computer executable instructions that, when executed, implement the data transfer method described above.

An embodiment of the present disclosure provides a data transmission method, by dividing a service data stream to be transmitted into at least two data streams to be transmitted according to a quality of service level, and satisfying a preset synchronization condition between the at least two data streams to be transmitted, and acquiring Determining, by the at least two types of candidate access networks, an access network corresponding to each data stream according to a quality of service level of each of the at least two to-be-transmitted data streams, through each data stream to be transmitted The corresponding access network transmits the each data stream to be transmitted, thereby reducing network load on the basis of ensuring delay stability of image or sound data transmission.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a flowchart of a data transmission method according to a first embodiment of the present disclosure;

2 is a flowchart of an optional implementation manner of acquiring at least two candidate access networks in the embodiment shown in FIG. 1;

3 is an interaction flowchart of a data transmission method according to a second embodiment of the present disclosure;

4 is an interaction flowchart of a data transmission method according to a third embodiment of the present disclosure;

FIG. 5 is an interaction flowchart of a data transmission method according to a fourth embodiment of the present disclosure;

6 is an interaction flowchart of a data transmission method according to a fifth embodiment of the present disclosure;

FIG. 7 is a flowchart of a data transmission method according to a sixth embodiment of the present disclosure;

8 is a flow chart of interaction of video call establishment in the data transmission method of the present disclosure;

FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of still another terminal according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of an optional core network device according to an embodiment of the present disclosure;

FIG. 12 is another schematic structural diagram of a core network device according to an embodiment of the present disclosure;

FIG. 13 is still another schematic structural diagram of a core network device according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram of still another core network device according to an embodiment of the present disclosure.

Preferred embodiment of the present disclosure

Embodiments of the present disclosure will be described below with reference to the accompanying drawings.

FIG. 1 is a flowchart of a data transmission method according to a first embodiment of the present disclosure.

As shown in FIG. 1 , an execution subject of an embodiment of the present disclosure is a terminal. The steps of the embodiments of the present disclosure include:

S101: The terminal acquires at least two types of candidate access networks.

S102: The terminal divides the service data flow to be transmitted into at least two data flows to be transmitted according to the quality of service level.

The preset synchronization condition is met between the at least two data streams to be transmitted.

S103: The terminal determines, according to the quality of service level of each of the at least two to-be-transmitted data streams, the access network corresponding to each to-be-transmitted data stream.

One data stream to be transmitted corresponds to one access network.

S104: The terminal transmits the each to-be-transmitted data stream by using the access network corresponding to each to-be-transmitted data stream.

In the embodiment of the present disclosure, it is worth noting that the at least two to-be-transmitted data streams that satisfy the preset synchronization condition may be from the same service request, or at least two to-be with the same sender and receiver. Transmitting a data stream, wherein a variance of a time at which the at least two data packets sent at the same time in the at least two data streams to be transmitted arrive at the receiver is less than a threshold synchronization time threshold.

For example, the at least two data streams to be transmitted may be a voice to-be-transmitted data stream and a video image to-be-transmitted data stream in a video call. For another example, the at least two to-be-transmitted data streams may be an IP Multimedia Subsystem (IMS)-based Voice over LTE (VoLTE) call process in a Long Term Evolution (LTE) network. The data stream to be transmitted and the video image to be transmitted are generated in the data stream.

Optionally, the terminal may perform S102 after receiving the service request. Exemplarily, the service request may be a VoLTE service request initiated by a user operating terminal.

It is also worth noting that the terminal can support multiple types of access networks, and the at least two types of access networks may include: an LTE access network, a wireless fidelity (WiFi) access network, and a broadband. At least two types of code division multiple access (WCDMA) access networks and Code Division Multiple Access (CDMA) access networks. For example, the at least two types of access networks may be an LTE access network and a WiFi access network; for example, the at least two types of access networks may also be an LTE access network and a WCDMA access network.

For example, the at least two types of access networks may include a first access network and a second access network, where the access network corresponding to the first core network device is the first access network, and the terminal may A communication connection is established between the first core network devices, where the first access network may include the first access network device and the first core network device. Taking the first access network as the LTE access network as an example, the first access network device may be a base station of the LTE network device, and the terminal may establish a communication connection based on the LTE access network with the first access network device, A core network device can communicate with the terminal through the first access network device. After the terminal establishes a communication connection with the first core network device, the terminal may obtain a user initiated VoLTE service request. Then, the video image data stream or the voice data stream is offloaded to the terminal second access network for transmission. Taking the second access network as the WiFi access network as an example, the second access network device in the second access network may be a WiFi access point, and the terminal may transmit the voice data stream through the LTE access network, and at the same time, The WiFi access network transmits a video image data stream.

Optionally, after receiving the service request, the terminal may first confirm whether it supports the capability of communicating with the at least two access networks, and then determine whether there are other types of access networks other than the first access network. Or, determining the signal strength of other types of access networks existing around, and determining whether to execute S101 according to the determination result.

Optionally, the embodiment of the present disclosure does not limit the execution order of S101 and S102, and only needs to ensure that S101 and S102 are executed before S103. FIG. 1 shows an example of a case where S102 is executed after S101 is executed first.

In the data transmission method of the embodiment of the present disclosure, the terminal transmits at least two to-be-transmitted data streams that meet the preset synchronization condition by using at least two access networks, and at least one of the at least two to-be-transmitted data streams can be transmitted. The traffic is offloaded to at least one other access network for transmission, thereby reducing transmission load of the at least two data streams to be transmitted by one access network, reducing or avoiding data caused by excessive load of a single access network during transmission The packet loss packet improves the transmission reliability of the at least two data streams to be transmitted.

In the embodiment of the present disclosure, before the terminal transmits the data stream to be transmitted through the access network corresponding to each data stream to be transmitted in the at least two to-be-transmitted data streams, the terminal may follow the service in S102. The quality level divides the traffic data stream to be transmitted into at least two data streams to be transmitted.

The service data stream may generally include multiple data streams with different quality of service levels. Some communication protocols define the Quality of Service (QoS) of various data packets in the service data flow. For example, voice data packets and video image data packets in the VoLTE video call service may have different QoS levels. . Optionally, some network conference calls and security monitoring services may also include multiple data packets with different quality of service levels. The service data can be divided according to the actual transmission quality requirements of the data packet. For example, when the reliability of the voice data packet is more important, the voice data packet definition may have a higher quality of service level, and when the reliability of the data packet of the image or other monitoring data is less important, the image or other monitoring data may be used. The data packet association defines a lower quality of service level, so that when the service data stream is acquired, the data stream to be transmitted is divided according to the quality of service level corresponding to the data packet included in the service data stream.

Determining, according to the quality of service level of each of the at least two to-be-transmitted data streams, the access network corresponding to the to-be-transmitted data stream from the candidate access network, may include:

The terminal sorts the at least two types of candidate access networks according to the level of service capability of each type of candidate access network; the terminal sets the data stream to be transmitted according to the quality of service level by high The access network corresponding to each of the to-be-transmitted data streams is obtained in one-to-one correspondence with the at least two types of access networks.

Exemplarily, each of the at least two to-be-transmitted data streams may be determined according to a QoS level of each of the at least two types of access networks and a service capability level of each of the at least two types of access networks. The access network corresponding to the data stream to be transmitted. Therefore, it is possible to determine a suitable access network for data stream transmission according to the quality of service level of the data stream to be transmitted. It should be noted that the at least two data streams to be transmitted may be divided into at least two levels.

The QoS level of each of the at least two to-be-transmitted data streams may be determined according to a QoS Class Identifier (QCI) level corresponding to each to-be-transmitted data stream. Exemplarily, the voice data stream of the VoLTE service corresponds to a QCI level of 1, and the video data stream corresponds to a QCI level of 2.

It should be noted that the service capability level of each access network may be determined according to one or more factors such as a transmission rate, a transmission timeout rate, and a packet loss rate of the access network. The transmission timeout rate may be a proportion of the time-out data packets transmitted by the access network device of the access network in a preset time period; or the access network device of the access network transmits The proportion of packets with a timeout in the preset number of packets. Optionally, the service capability level of each access network may also be pre-configured. Exemplarily, the service capability level of the LTE access network is 1, the service capability level of the WiFi access network is 2, the service capability level of the WCDMA access network is 3, and the service capability level of the CDMA access network is 4.

For example, the principle of determining the access network corresponding to the data stream to be transmitted may be that the data to be transmitted with a higher quality of service level is allocated to the access network with a higher service capability level for transmission. Therefore, it is possible to preferentially ensure the transmission reliability of the data stream to be transmitted with a higher quality of service level.

For example, the at least two data streams to be transmitted may correspond to at least two quality of service QoS levels, and any data stream to be transmitted may correspond to one quality of service level; the at least two types of access networks may correspond to at least two The service capability level, any access network type may correspond to one service capability level; the at least two quality of service levels may correspond to the at least two service capability levels. Wherein, the at least two service quality levels are sorted according to a sequence of quality of service levels corresponding to the at least two quality of service levels that are available in a high-to-low order, and the at least two service capability levels are sorted from high to low. A sequence of service capability levels corresponding to the at least two service capability levels that are available. Each of the quality of service levels in the sequence of quality of service levels may in turn correspond to each of the levels of service capabilities in the sequence of service levels.

Exemplarily, the at least two data streams to be transmitted are a voice data stream and a video image data stream in a VoLTE service, where a QCI corresponding to the voice data stream is 1, and a QCI corresponding to the video image data stream is 2, and the at least two types are Types of access networks are LTE access networks and WiFi access networks. Based on the comprehensive performance of the access network, the transmission loss rate, and the transmission stability, the LTE access network is superior to the WiF access network, and the service capability level of the LTE access network can be set to 1, and the WiFi connection is set. The service capability level of the incoming network is 2, the terminal may transmit the voice data stream through the base station of the LTE access network, and transmit the video image data stream through the WiFi access point of the WiFi access network. Optionally, the service capability level corresponding to each access network may be determined according to a comprehensive performance weighting value of a preset monitoring duration.

In the embodiment of the present disclosure, the LTE access network can provide high-speed, secure, and reliable data transmission, thereby ensuring timely and reliable transmission of the voice data stream, and ensuring that the user of the receiver can hear the voice of the video call. At the same time, the transmission of the video image data stream through the WiFi access network can greatly reduce the transmission bandwidth resources required for the LTE access network to transmit the video image data stream. Therefore, in this manner, the voice data stream and the video image data stream of the VoLTE service are transmitted, and the user can always receive timely and complete voice, that is, the user receiving the effect is reduced and the transmission load of the LTE network is reduced.

In addition, the transmission rate of the WiFi access network is higher, and the timely and reliable transmission of the video image to be transmitted can be ensured, so that the user can see the image of the video call. Therefore, in this way, the user can also ensure that the image during the video call is continuously watched.

Moreover, for a user using the terminal, when the user transmits at least two data streams to be transmitted by using at least two types of access networks, the user can flexibly use the data traffic to be transmitted of each access network, for example, When the remaining traffic of the LTE access network in the user account is insufficient, or when the traffic tariff standard of the LTE access network is higher than the traffic tariff standard of other access networks, the user can set the terminal and use the traffic. A plurality of video image to be transmitted data streams are allocated to an access network with a lower traffic rate standard for transmission.

Therefore, the data transmission method provided by the embodiment can also help the user to save the traffic usage fee.

It can be seen that the data transmission method provided by the embodiment of the present disclosure divides the service data stream to be transmitted into at least two data streams to be transmitted according to the quality of service level, and the at least two data streams to be transmitted meet the preset. a synchronization condition, determining, according to a quality of service level of each of the at least two data streams to be transmitted, an access network corresponding to each data stream, and transmitting through an access network corresponding to each data stream to be transmitted Each of the data streams to be transmitted can reduce network load on the basis of ensuring delay stability of image or sound data transmission.

Optionally, on the basis of any of the foregoing embodiments, the embodiment of the present disclosure further provides an optional implementation manner. In this implementation manner, the terminal may send the at least two data streams to be transmitted. Party or receiver. When the terminal is the sender, the terminal respectively transmits the at least two to-be-transmitted data streams by using at least two access networks, and the method may include: the terminal sending the at least two to-be-transmitted data streams; When the terminal is the receiver, the terminal respectively transmits the at least two to-be-transmitted data streams by using at least two access networks, and the method may include: the terminal receiving the at least two to-be-transmitted data streams.

Optionally, on the basis of any of the foregoing embodiments, the embodiment of the present disclosure further provides an optional implementation manner. In this implementation manner, the terminal of the receiver may transmit the data through the at least two access networks. At least two of the at least two data streams to be transmitted are paired to complete the corresponding service request.

Exemplarily, at least two data packets sent at the same time in the at least two data streams to be transmitted may have the same timestamp identifier. Optionally, the time synchronization between the sending end and the receiving end can be implemented by using a Real-Time Transport Control Protocol (RTCP). For example, the sending end can send a report packet (Sender Report, SR) to the receiving end. The timestamp that has been sent is reported. The timestamp in the SR may be an NTP timestamp (RT timestamp) or an RTP timestamp (RTP timestamp) in the Synchronization Source Identifier (SSRC).

For at least two data packets having the same timestamp identifier, the terminal of the receiver may determine the first receiving time according to the timestamp identifier corresponding to the at least two data packets; and receive the time according to the first receiving time. Stamping the identified data packet; discarding the data packet with the timestamp identifier that arrives at the terminal after the first receiving time.

Optionally, the discarding the data packet with the timestamp identifier that arrives at the terminal after the first receiving time may include: discarding a timeout data packet whose corresponding QoS level is less than a preset guarantee level. Illustratively, only packets of the video image data stream may be discarded without allowing the packets in the voice data stream to be discarded.

Optionally, for the data packet in the voice data stream and the video image data stream of the VoLTE service, the terminal matches the data packet received at the first receiving time, and after matching, sends the data packet corresponding to the voice data stream to the earphone or the speaker output. Send the data packet corresponding to the video image data stream to the screen display.

It is worth noting that the range of the first reception time can be determined according to the degree of delay that can be tolerated. In this way, it is not necessary to wait for the data packet with more timeout to arrive, so that most of the data packets of the at least two data packets can be used for service presentation in time, thereby improving the user experience in real-time receiving data. .

Optionally, based on any of the foregoing embodiments, the embodiment of the present disclosure further provides a third optional implementation manner.

2 is a flow chart of an alternative embodiment of acquiring at least two candidate access networks in the embodiment shown in FIG. 1.

As shown in FIG. 2, in this embodiment, S101 may include:

S201: The terminal acquires at least two access resources; the at least two access resources correspond to the at least two types of access networks, and any access resource corresponds to one access network.

S202. Determine at least two candidate access networks according to the at least two access resources.

In the embodiment of the present disclosure, it is worth noting that an access resource may identify a transmission path or a destination node address. An access network corresponding to an access resource is an access network through which the transmission path passes, or an access network to which the transmission resource is allocated, or an access network corresponding to the destination node address.

For example, the access resource corresponding to the LTE access network may be a dedicated bearer of the LTE network, and the access resource corresponding to the WiFi access network may be an Internet Protocol (IP) address, corresponding to the WCDMA access network. The access resource may be a bearer of the WCDMA network, and the access resource corresponding to the CDMA access network may be a bearer of the CDMA network.

Optionally, the destination node address may be an identifier used by the peer terminal of the terminal to access an access network. Exemplarily, the access resource corresponding to the WiFi access network may be the IP address of the peer terminal.

It is to be noted that, if the terminal is the transmitting end of the at least two data streams to be transmitted, the peer terminal is a terminal that is a receiving end. If the terminal is the receiving end of the at least two data streams to be transmitted, the peer terminal is a terminal that is a transmitting end.

Optionally, when the at least two network devices corresponding to the at least two types of access networks are the first core network device and the second core network device, the terminal may obtain the access by using the first core network device. When the resource is used, the destination node address may also be an interface identifier that the first core network device communicates with the second core network device. Exemplarily, the access resource corresponding to the WiFi access network may be an IP address corresponding to the first core network device.

In this manner, when the peer device does not support communication with the second access network, the data stream to be transmitted can still be forwarded by the first core network device. For example, if the access network device in the second access network is a WiFi access point, the data stream to be transmitted may be sent to the IP interface of the first core network device through the WiFi access point, and then restarted by the first core network device. Forward to the peer device. Thereby, the shunting of the at least two data streams to be transmitted on a partial section of the transmission path is achieved.

Optionally, the terminal may obtain an interface address that the first core network device communicates with the second core network device before acquiring the service request for indicating the at least two data streams to be transmitted. With this implementation manner, the terminal may not need to request access resources corresponding to the second access network each time the data stream to be transmitted needs to be transmitted.

The following describes the data transmission method implemented by the S201 in several optional implementation manners in which the terminal acquires at least two access resources through the first core network device.

FIG. 3 is an interaction flowchart of a data transmission method according to a second embodiment of the present disclosure.

As shown in FIG. 3, the execution body of the present embodiment includes a terminal and a first core network device. Based on the method shown in FIG. 2 (not shown in S202 to S102 to S104), in the embodiment of the present disclosure, S201 Can include:

S301: The terminal sends a resource request to the first core network device, where the resource request is used to request to transmit at least two access resources of the at least two data streams to be transmitted.

The at least two data streams to be transmitted satisfy a preset synchronization condition.

S302: The first core network device sends a resource indication to the terminal, where the resource indication is used to indicate that the terminal transmits the at least two to-be-transmitted data streams by using at least two types of access networks.

In the embodiment of the present disclosure, the first access network may correspond to the first access network device and the first core network device, where the first core network device may be performed by using the first access network device (not shown) Communication. The at least two data streams to be transmitted may be a voice data stream and a video image data stream generated during a call of a video call service or a VoLTE service. Taking the VoLTE service as an example, after obtaining the user-initiated VoLTE service request, the terminal may send the resource request to the first core network device by using an invite invite message in the Session Initiation Protocol (SIP) protocol. Illustratively, the invite message may include m=Audio and m=video media information.

It is to be noted that the resource indication may include only at least one first access resource corresponding to the first access network, where the number of the at least one first access resource is less than the at least two data to be transmitted. The number of flows, or the resource indication may include a second access resource corresponding to the second access network. The method in which the resource indication only includes the first access resource is used, and the terminal user may separately initiate a resource request for requesting other access resources to the second core network device.

For example, the at least two data streams to be transmitted may be M data streams to be transmitted, and the at least two types of access networks may be M access networks, where the M access resources may correspond to M. Each access network corresponds to one access network, and M is an integer greater than or equal to 2.

The sending, by the first core network device, the resource indication to the terminal may include:

The first core network device sends a first resource indication to the terminal, where the first resource indication includes N access resources corresponding to the first core network device of the at least two network devices, and the N access resources Corresponding to the first core network device, N is an integer greater than or equal to 1 and less than M; or

The first core network device sends a second resource indication to the terminal, where the second resource indication includes P second access resources, the second access resource corresponds to the second core network device, and the second core network device The access network corresponding to the first core network device is different, and P is an integer greater than 1 and less than or equal to M; or

The first core network device sends a first resource indication and a second resource indication to the terminal, where the first resource indication includes N access resources corresponding to the first core network device of the at least two network devices, The N access resources correspond to the first core network device, N is an integer greater than or equal to 1 and less than M, the second resource indication includes P second access resources, and the second access resource corresponds to the second core a network device, where the second core network device is different from the access network corresponding to the first core network device, where P is an integer greater than 1 and less than or equal to M;

Wherein, the sum of N and P is less than or equal to M.

The method of sending the first resource indication, or sending the second resource indication, or sending the first resource indication and the second resource indication at the same time, may enable the terminal to learn that the first core network device indicates that the terminal passes the corresponding The network devices of the at least two types of access networks transmit the at least two data streams to be transmitted.

It is also to be noted that, optionally, the first core network device may obtain the second access resource in multiple manners. For example, the first core network device may obtain the second access resource from the second core network device, or the first core network device may obtain the second access resource from the peer terminal, or the first core network The device may send the interface address of the second core network device to the terminal as the second access resource.

It is also to be noted that, optionally, the sending, by the terminal, the resource request to the first core network device may include:

The terminal sends a resource request first resource request to the first core network device, where the first resource request is used to request to transmit the first access resource of the N to be transmitted data, where the first access resource corresponds to the first access The internet;

The terminal sends a resource request second resource request to the first core network device, where the second resource request is used to request to transmit the second access resource of the P data to be transmitted, where the second access resource corresponds to the first access The internet.

The first core network device may send the first resource indication and the second resource indication respectively in response to the first resource request and the second resource request.

Based on any of the above embodiments, the embodiment further provides three alternative embodiments.

In the first optional implementation manner of this embodiment, the resource request received by the first core network device at S301 may be the same as the resource request of the VoLTE service known in the art. The first core network device may actively send a resource indication for instructing the terminal to transmit the at least two to-be-transmitted data streams by using at least two network devices.

In the second optional implementation manner of this embodiment, optionally, before S301, the method may further include:

S300: The terminal sends multiple network access capability information to the first core network device.

The multi-network access capability information indicates that the terminal has the capability of accessing a second access network of the at least two network devices. Optionally, the terminal may report the access capability of the one or more access networks except the first access network to the first core network device.

Optionally, the terminal may send the multiple network access capability information by using a measurement report (Measurement Report). Optionally, the measurement report message may further include information such as a signal strength of the second access network measured by the terminal.

It should be noted that the S300 step is not a necessary step of other embodiments of the embodiment.

In this embodiment, the terminal may report the multiple network access capability information to the first core network device at any time before the service request for transmitting the at least two data streams to be transmitted is obtained, so that the first core network device may be in S301. The resource indication is issued upon receiving the same resource request as the resource request for the VoLTE service known in the art.

In the third optional implementation manner of this embodiment, optionally, the multiple network access capability information may be sent to the first core network device in the resource request of S301, so that the first core network device Issue a resource indication.

The second and third optional implementation manners of the foregoing embodiment enable the first core network device to know that the terminal has the capability to communicate with the second core network device corresponding to the second access network.

Other technical solutions and technical effects of the embodiments of the present disclosure are similar to those of the methods shown in FIG. 1 to FIG. 2, and details are not described herein again.

FIG. 4 is an interaction flowchart of a data transmission method according to a third embodiment of the present disclosure.

On the basis of the method shown in FIG. 2 (not shown in FIG. S102 to S104), as shown in FIG. 4, the execution body of this embodiment may include a first terminal, a second terminal, and a first core network device. In this embodiment, S201 may include:

S401: The first terminal sends multiple network access capabilities to the first core network device.

The multi-network access capability may be sent by using a measurement report message.

S402: The first terminal sends a resource request to the first core network device, where the resource request is used to request to transmit at least two access resources of the at least two data streams to be transmitted.

Optionally, the first terminal may send the resource request by using an invite message.

It should be noted that S402 is not a step that must be performed, and S402 may be performed before S401.

S403: The first core network device sends a offload resource request to the second terminal, where the offload resource request is used to request to transmit an access resource of a part of the to-be-transmitted data stream.

The first core network device may send the offload resource request by using an invite message.

S404: The second terminal sends a offload resource indication to the first core network device, where the offload resource indication includes a second access resource corresponding to the second access network.

Optionally, when the second access network is a WiFi access network, the second access resource may be an IP address of the second terminal. Optionally, the offload resource indication may be sent by a 183 session progress message (183 session progress).

S405: The first core network device sends a second resource indication to the first terminal, where the second resource indication includes the second access resource.

The second access resource corresponds to the second access network. Optionally, the first core network device may send the second access resource by using a 183 session progress message of the VoLTE service.

It should be noted that, when the interface address of the first core network device that communicates with the second core network device is sent to the first terminal as the second access resource, S403 and S404 may not be performed.

S406: The first core network device sends a first resource indication to the first terminal, where the first resource indication includes the first access resource.

The first access resource corresponds to the first access network. Optionally, the first core network device may send the first access resource by using an Activate dedicated EPS bearer context request.

It is also worth noting that S403 to S405 and S406 may not be simultaneously provided, that is, there may be no S403 to S405 after S401, or no S406. Moreover, the embodiment of the present disclosure does not limit the order of execution of S405 and S406.

Other technical solutions and technical effects of the embodiments of the present disclosure are similar to those of the methods shown in FIG. 1 to FIG. 3, and are not described herein again.

FIG. 5 is an interaction flowchart of a data transmission method according to a fourth embodiment of the present disclosure.

The execution body of this embodiment may include a first terminal, a second terminal, a first core network device, and a second core network device. Unlike the embodiment shown in FIG. 4, S403 and S404 can be replaced with S503 and S504.

As shown in FIG. 4, the steps in this embodiment may include:

S501: The first terminal sends multiple network access capabilities to the first core network device.

Optionally, the multiple network access capability may include an identifier of the first terminal, where the identifier of the first terminal is used by the first terminal to communicate with the second access network.

S502: The first terminal sends a resource request to the first core network device, where the resource request is used to request to transmit at least two access resources of the at least two data streams to be transmitted.

S503: The first core network device sends a offload resource request to the second core network device, where the offload resource request is used to request to transmit part of the access resource of the to-be-transmitted data stream.

Optionally, when the multiple network access capability of the S502 includes the identifier of the first terminal, the offload resource request in S503 may include the identifier of the first terminal.

S504: The second core network device sends a offload resource indication to the first core network device, where the offload resource indication includes a second access resource corresponding to the second access network.

The access resource may be a bearer or a dedicated bearer allocated by the second core network device according to the identifier of the communication between the first terminal and the second access network. Optionally, the access resource may be used to identify a transmission path from the first terminal to an access network device of the second access network to the first core network device.

S505: The first core network device sends a second resource indication to the first terminal, where the second resource indication includes the second access resource.

S506: The first resource indicator sent by the first core network device to the first terminal, where the first resource indication includes the first access resource.

Similar to the method shown in FIG. 4, S503 to S505 and S506 may not be simultaneously provided, that is, there may be no S503 to S505 after S501, or no S506. Moreover, the embodiment of the present disclosure does not limit the order of execution of S505 and S506.

It is to be noted that the first access network may correspond to the first access network device and the first core network device, and the first core network device may communicate with the terminal through the first access network device. The second access network may correspond to the second access network device and the second core network device, and the second core network device communicates with the terminal by using the second access network device. The interaction process between the first terminal and the first core network device may be an interaction process between the first access network device and the first core network device. The interaction process between the first terminal and the second core network device may be an interaction process between the second access network device and the second core network device by the first terminal.

It is also to be noted that the access network for transmitting the data stream to be transmitted in the embodiment of the present disclosure may include an access network device or include an access network device and a core network device.

Other technical solutions and technical effects of the embodiments of the present disclosure are similar to those of the methods shown in FIG. 1 to FIG. 4, and details are not described herein again.

The application of the data transmission method provided by the embodiment of the present disclosure is described in detail below.

FIG. 6 is an interaction flowchart of a data transmission method according to a fifth embodiment of the present disclosure.

On the basis of the method shown in FIG. 2, the execution body of the embodiment of the present disclosure may include: a first terminal, a second terminal, a first core network device, a first access network device, and a second access network device.

Taking the VoLTE service as an example, the at least two to-be-transmitted data streams may be a voice to-be-transmitted data stream and a video image to-be-transmitted data stream.

The first access network corresponding to the first core network device and the first access network device may be an LTE access network, and the second access network corresponding to the second access network device may be a WiFi access network.

As shown in FIG. 6, the steps of the present disclosure may include:

S601: The first terminal sends a measurement report message to the first core network device.

The measurement report message indicates that the first terminal supports access to the WiFi access network.

S602: The second terminal sends a measurement report message to the first core network device.

The measurement report message indicates that the second terminal supports access to the WiFi access network.

S603: The first terminal acquires a VoLTE video call request initiated by the user.

S604: The first terminal sends an invite message to the second terminal, where the invite message is used to initiate a VoLTE video call request to the second terminal.

S605: The first terminal checks whether there is an available WiFi access network.

If it is determined that the WiFi access network is available, the access network corresponding to the voice data stream in the VoLTE video call request is determined to be an LTE access network, and S606 is performed, and the access network corresponding to the video image data stream is determined to be a WiFi connection. Enter the network and execute S607.

S606: The first terminal sends a first resource request to the first core network device, where the first resource request is used to request a dedicated bearer for transmitting the voice data stream.

Among them, the voice data stream has a QCI level of 1.

S607: The first terminal sends a second resource request to the first core network device, where the second resource request is used to request an IP address of the second terminal that transmits the video image data stream.

S608: The first core network device sends a split resource request to the second terminal.

The offload resource request is used to request a second access resource corresponding to the WiFi access network.

S609: The second terminal sends a offload resource indication to the first core network device, where the offload resource indication includes an IP address of the second terminal.

S610: The first core network device sends a 183 session progress message to the first terminal, where the 183 session progress message includes an IP address of the second terminal.

The first terminal cannot use the 183 session progress message as the identifier of the called response.

S611: A dedicated bearer activation request sent by the first core network device to the first terminal, where the dedicated bearer activation request is used to request to establish a dedicated bearer with QCI=1.

S612: The first terminal sends a dedicated bearer setup response to the first core network device.

The Active Dedicated EPS bearer context accept is used to identify that the first terminal agrees to establish a dedicated bearer with QCI=1.

S613: The second terminal checks if there is an available WiFi access network.

If the available WiFi access network is available, determine that the access network corresponding to the voice data stream in the VoLTE video call request is an LTE access network, perform S614, and determine that the access network corresponding to the video image data stream is a WiFi connection. Enter the network and execute S615.

S614: The second terminal sends a first resource request to the first core network device.

The first resource request is used to request a dedicated bearer for transmitting voice data.

S615: The second terminal sends a second resource request to the first core network device.

The second resource request is used to request an IP address of the first terminal that transmits the video image data.

S616: The first core network device sends a dedicated bearer activation request to the second terminal.

The dedicated bearer activation request is used to request to establish a dedicated bearer with QCI=1.

S617: The second terminal sends a dedicated bearer setup response to the first core network device.

S618: The first core network device sends a 183 session progress message to the second terminal, where the 183 session progress message includes an IP address of the first terminal.

After the resource reservation process ends, the first terminal transmits the voice data stream to the second terminal by using the first access network device, and the first terminal transmits the video image data stream to the second terminal by using the second access network device, and the destination address points The IP address of the second terminal.

The first terminal and the second terminal perform delay processing on the VoLTE video call. The delay processing may include: adding a timestamp to each data packet when the first terminal sends the data stream. And, when receiving the data stream, the second terminal performs matching according to the received data packet to determine whether the received data packet is reported to the upper layer application for presentation. Delay processing can continue until either terminal ends the video call.

It is to be noted that the first core network device may include a first access network device and a first core network device, and the first core network device communicates with the terminal through the first access network device. The second core network device can include a second access network device. The interaction process between the foregoing terminal and the first core network device may be an interaction process between the first access network device and the first core network device. The interaction process between the terminal and the second core network device may be an interaction process between the terminal and the second access network device.

It is also worth noting that, optionally, the access network device of the first access network connected to the first terminal and the second terminal may be different access network devices in the first access network. Similarly, the second access network device connected to the first terminal and the second terminal may be different access network devices in the second access network. For example, the WiFi access point connected to the first terminal and the WiFi access point connected to the second terminal may be different, and the two WiFi access points may be connected through the Internet.

Based on the above embodiments, an example will be given.

FIG. 7 is a flowchart of a data transmission method according to a sixth embodiment of the present disclosure.

As shown in FIG. 7 , the first access network is an LTE access network, the second access network is a WiFI access network, and the first core network device is an LTE core network device. The method in this embodiment may include:

S701: The first terminal acquires a user initiated a VoLTE video call, and sends an invite message.

The invitation message is an invite message.

S702: The first terminal checks whether there is an available WiFi access network, and if yes, executes S703, and if not, executes S711.

If the WiFi access network is available, the access network corresponding to the VoLTE voice service is determined to be an LTE access network, and the access network corresponding to the video service is determined to be a WiFi access network, and S703 is performed.

S703: The first terminal sends a measurement report to the LTE core network device.

The measurement report includes measurement information of the WiFi network.

S704: The first terminal sends an invite message to the second terminal by using the LTE network side.

The invite message is used to request the LTE core network device to establish a dedicated bearer for the VoLTE voice service, and request to obtain the video service IP address of the called party.

S705: The LTE network side sends an 183 message to the first terminal, and carries the called address information, in response to the invitation message sent by the first terminal.

The first terminal acquires the video service IP address information of the called party by using the 183 message.

S706: The LTE network side sends a dedicated bearer activation request to the first terminal, and is used to establish a dedicated bearer with QCI=1 for the voice service, and the first terminal replies to the dedicated bearer activation response, and completes the dedicated bearer negotiation process.

S707: The first terminal transmits the microphone data on the LTE dedicated bearer with QCI=1.

S708: The first terminal sends the camera data to the WiFi access point, and the destination address is an IP address of the second terminal.

S709: VoLTE video call delay processing.

Among them, the delay processing can guarantee the quality of the video call through RTCP to ensure time synchronization. Optionally, the first terminal of the sending end may report that the sender SR (Sender Report) is used to enable the sending end to report the sending status to all receiving ends in a multicast manner, and when there is data to be sent, add a time stamp to the data, and the receiving end When performing the delay processing, the timestamp can be read from the received data, and the timestamps in the adjacent data are compared. If the same or the difference is very close, the upper application is submitted to play, and if one of the timestamps is larger, Continue to receive data.

S710: The VoLTE video call ends.

S711: The first terminal sends an invite message to the second terminal by using the LTE network side.

S712: After receiving the invitation message, the second terminal sends a 183 message to the first terminal, carrying the address information of the called party, the media codec capability, and the like.

S713: The LTE network sends two dedicated bearer activation requests to the first terminal, respectively, for requesting to establish two dedicated bearers of QCI=1 and QCI=2 for the voice data stream and the video data stream.

S714: The VoLTE voice service and the video service are all carried over the LTE network.

In the embodiment of the present disclosure, it should be noted that, referring to FIG. 8 , an interaction flowchart of a video call establishment in the data transmission method of the present disclosure includes:

S801: The first terminal sends an invite message to the second terminal.

The invite invite message is a first Session Description Protocol (SDP) request, and the message provides all the codes supported by the first terminal.

S802: The second terminal sends a 183 message to the first terminal.

The 183 message is the first SDP response, and the message provides all the codes supported by the second terminal.

S803: The first terminal sends a temporary response message to the second terminal.

The temporary response PRACK message is a second SDP request, and the message provides an encoding determined by the first terminal for each medium. Media refers to video image data streams or voice data streams.

S804: The second terminal sends a 200 message for answering the temporary response message to the first terminal.

The 200 for PRACK message is a second SDP response.

S805: Resource reservation processing.

S806: The first terminal sends an update message to the second terminal.

The update UPDATE message is a third SDP request, and the message indicates that the first terminal completes resource reservation processing.

S807: The second terminal sends a 200 message for answering the update message to the first terminal.

The 200 for UPDATE message is a third SDP request, and the message indicates that the second terminal completes resource reservation processing.

S808: The second terminal sends a 180 message to the first terminal.

The 180 message is a called ringing message of the SIP protocol.

S809: The first terminal sends a temporary response message to the second terminal.

S810: The second terminal sends a 200 message acknowledging the temporary response message to the first terminal.

In the process of establishing a VoLTE video call, it is worth noting that the invite message of the S801 is sent by the first terminal to the second terminal by using the LTE core network device, and the first terminal may request the LTE core network device by using the invite message. The VoLTE voice service establishes a dedicated bearer, or acquires the video service IP address information, or requests the LTE core network device to establish a dedicated bearer for the VoLTE voice service and obtain the video service IP address information, that is, implement the foregoing S703 and S705.

Then, the LTE core network device can return the video service IP address information of the second terminal to the first terminal by using the 183 session progress message. Optionally, the 183 session progress message may be a 183 session progress message used by the called side terminal to return the encoding support information to the calling side, that is, the foregoing S706 is implemented.

It is worth noting here that, in order to ensure that the media session negotiated by both parties can be established, the air interface of the LTE needs to allocate resources for the calling party and the called user. Before the resource is successfully reserved, the media session cannot be successfully established.

The resource reservation (Precondition) function is embodied in two stages in SIP signaling. All media negotiation in the first stage is only for the preparation of resource reservation by both parties. For example, the media negotiation information may be carried in the 183 message. When the 183 message includes media negotiation information such as a video IP address and an encoding format, the first terminal cannot use 183 as a ringback indication because the resource reservation has not been established. success.

In the resource reservation phase, the LTE core network may send a dedicated bearer activation request to the first terminal, and the first terminal may send the dedicated bearer to be successfully established, that is, S704. Optionally, the first terminal may also establish a WiFi-based network with the second terminal. Connection.

After the resource reservation is successful, the first terminal sends an Update message to indicate that the resource reservation is established, and the resource reservation enters the second phase. In the second phase, the 18X signaling of the second phase can be The ordinary SIP protocol establishes the VoLTE video call flow as the indication information for putting back the ring tone.

Other technical solutions and technical effects of the embodiments of the present disclosure are similar to those of the methods shown in FIG. 1 to FIG. 6, and are not described herein again.

The embodiment of the present disclosure further provides a terminal. FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 9, the terminal 90 includes:

The first transceiver module 901 is configured to acquire at least two types of candidate access networks;

The processing module 902 is configured to determine a level of the data stream to be transmitted according to a preset level division policy, where the number of the data streams to be transmitted is at least two, and the preset synchronization is satisfied between the data streams to be transmitted And determining, by the terminal, the access network corresponding to each of the to-be-transmitted data streams from the candidate access network according to a level of the data stream to be transmitted; and one data stream to be transmitted corresponds to one access network;

The first transceiver module 901 is further configured to transmit, by the terminal, each of the to-be-transmitted data streams by using an access network corresponding to each of the to-be-transmitted data streams.

In the embodiment of the present disclosure, the at least two data streams to be transmitted may be a voice data stream and a video image data stream in a video call.

In the embodiment of the present disclosure, the level of any of the to-be-transmitted data streams may be a quality of service QoS level corresponding to the to-be-transmitted data stream.

In the embodiment of the present disclosure, the processing module 902 may be configured as:

Sorting the at least two types of candidate access networks according to service capability levels of various types of candidate access networks;

And each of the to-be-transmitted data streams is in one-to-one correspondence with the at least two types of access networks according to a level from high to low, to obtain an access network corresponding to each of the to-be-transmitted data streams.

In the embodiment of the present disclosure, the first transceiver module 901 may be configured as:

Acquiring at least two access resources; the at least two access resources correspond to the at least two types of access networks, and any access resource corresponds to one access network;

Determining the at least two candidate access networks according to the at least two access resources.

In the embodiment of the present disclosure, the first transceiver module 901 may be configured to send a resource request to the first core network device, where the resource request is used to request to transmit at least two accesses of the at least two to-be-transmitted data streams. The access network corresponding to the first core network device is the first access network of the at least two types of access networks; and may be configured to receive the resource indication sent by the first core network device And the resource indication is used to indicate that the first terminal transmits at least two to-be-transmitted data streams by using at least two types of access networks.

The first transceiver module 901 may be further configured to send, to the first core network device, multiple network access capability information, where the terminal sends a resource request to the first core network device, where the multiple network access capability is The information indicates that the terminal has the capability to access a second access network of the at least two types of access networks.

In an embodiment of the present disclosure, the at least two types of access networks may further include a second access network; the transceiver module may be configured to send a first resource request to the first core network device, where the a resource request for requesting at least one first access resource, the first access resource corresponding to the first access network; and sending a second resource request to the first core network device, the second The resource request is used to request at least one second access resource, and the second access resource corresponds to the second access network.

In an embodiment of the disclosure, optionally, the at least two data streams to be transmitted are M to be transmitted data streams, and the at least two types of access networks are M access networks; M is greater than or equal to 2 An integer request; the resource request is used to request to transmit the M access resources of the M to be transmitted; the first transceiver module 901 is configured to receive the first resource indication sent by the first core network device, where The first resource indication includes N first access resources corresponding to the first access network, where N is an integer greater than or equal to 1 and less than M; or, receiving the second sent by the first core network device The resource indication, the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is an integer greater than or equal to 1 and less than M; Or receiving the first resource indication and the second resource indication sent by the first core network device, where the first resource indication includes N first access resources corresponding to the first access network, where N is greater than Or an integer equal to 1 and less than M, the second resource The indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is an integer greater than or equal to 1 and less than M;

Wherein, the sum of N and P is less than or equal to M.

In the embodiment of the present disclosure, the preset synchronization condition may be a synchronization time threshold in which the variance of the time at which the at least two data packets sent at the same time in the at least two data streams to arrive at the receiver are less than a threshold.

In the embodiment of the present disclosure, the at least two types of access networks may include at least two of an LTE access network, a WiFi access network, a WCDMA access network, and a CDMA access network.

The terminal in this embodiment may be configured to perform the technical solution of the method embodiment shown in FIG. 1 to FIG. 6. The implementation principle and the technical effect are similar, and details are not described herein again.

In practical applications, the terminal shown in FIG. 9 can also adopt an optional implementation manner.

10 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 10, the terminal 90 includes a memory 1003, a processor 1004, and a data transmission program stored on the memory 1003 and operable on the processor 1004. (not shown in the figure), the processor implements the following steps when executing the program:

Acquiring at least two types of candidate access networks; dividing the service data stream to be transmitted into at least two data streams to be transmitted according to a quality of service level; and satisfying a preset synchronization condition between the data streams to be transmitted; Determining a quality of service level of each of the at least two to-be-transmitted data streams from the candidate access network, and determining, by the candidate access network, an access network corresponding to each to-be-transmitted data stream; And transmitting, by the access network corresponding to each data stream to be transmitted, each data stream to be transmitted.

The terminal 90 may further include an interface 1001, a bus 1002, an interface 1001, and a memory 1003 connected to the processor 1004 via a bus 1002. The interface 1001 can be configured to communicate with at least two types of access networks. The interface may be a wired transmission interface or a wireless transmission interface. Illustratively, the interface may be a transmit or receive antenna or may be implemented by a program module integrated in a digital circuit processor. Optionally, the interface 1001 may include sub-interfaces (not shown) corresponding to each type of access network, respectively. For example, interface 1001 can include sub-interfaces that communicate with an LTE access network and a WiFi access network, respectively.

Optionally, the at least two data streams to be transmitted may be a voice data stream and a video image data stream in a video call.

Optionally, the level of any of the to-be-transmitted data streams may be a quality of service QoS level corresponding to the to-be-transmitted data stream.

Optionally, when the program is executed by the processor 1004, the following steps are also implemented:

Sorting the at least two types of candidate access networks according to service capability levels of various types of candidate access networks; and sequentially ordering each of the to-be-transmitted data streams from highest to lowest in order of the at least two types The access networks are in one-to-one correspondence, and the access network corresponding to each of the to-be-transmitted data streams is obtained.

Optionally, when the program is executed by the processor 1004, the following steps are also implemented:

Acquiring at least two access resources; the at least two access resources correspond to the at least two types of access networks, and any access resource corresponds to one access network; determining, according to the at least two access resources, The at least two candidate access networks.

Optionally, when the program is executed by the processor 1004, the following steps are also implemented:

Sending a resource request to the first core network device, where the resource request is used to request to transmit the at least two access resources of the at least two to-be-transmitted data flows; the access network corresponding to the first core network device is the a first access network of the at least two types of access networks; receiving, by the first core network device, a resource indication, where the resource indication is used to indicate that the first terminal passes at least two types of access networks Transmit at least two streams of data to be transmitted.

Optionally, when the program is executed by the processor 1004, the method further includes: sending, by the terminal, the multi-network access capability information to the first core network device, before the terminal sends the resource request to the first core network device, The multi-network access capability information indicates that the terminal has the capability of accessing a second access network of the at least two types of access networks.

Optionally, the at least two types of access networks further include a second access network, the processor reading the instruction is further configured to: send a first resource request to the first core network device, where the a resource request for requesting at least one first access resource, the first access resource corresponding to the first access network, and a second resource request, the second resource request to the first core network device And configured to request at least one second access resource, where the second access resource corresponds to the second access network.

Optionally, the at least two data streams to be transmitted are M to be transmitted data streams, and the at least two types of access networks are M access networks; M is an integer greater than or equal to 2; the resource request Means for requesting to transmit the M access resources to be transmitted; when the program is executed by the processor 1004, the method further includes: receiving a first resource indication sent by the first core network device, where the a resource indication includes N first access resources corresponding to the first access network, where N is an integer greater than or equal to 1 and less than M; or receiving a second resource indication sent by the first core network device The second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is an integer greater than or equal to 1 and less than M; or And receiving, by the first core network device, a first resource indication and a second resource indication, where the first resource indication includes N first access resources corresponding to the first access network, where N is greater than or equal to 1 and less than an integer of M, the second resource refers to The indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is an integer greater than or equal to 1 and less than M; wherein, the sum of N and P is less than Or equal to M.

Optionally, the preset synchronization condition may be a synchronization time threshold in which the variance of the time at which the at least two data packets sent at the same time in the at least two data streams to arrive at the receiver are less than a threshold.

Optionally, the at least two types of access networks may include at least two of an LTE access network, a WiFi access network, a WCDMA access network, and a CDMA access network.

In practical applications, the processor may be a Central Processing Unit (CPU), a Micro Processor Unit (MPU), a Digital Signal Processor (DSP), or a field programmable gate located in the terminal. Implementation of an array (Field Programmable Gate Array, FPGA).

The terminal in this embodiment may be configured to perform the technical solution of the method embodiment shown in FIG. 1 to FIG. 8. The implementation principle and the technical effect are similar, and details are not described herein again.

The embodiment of the present disclosure further provides a core network device, and FIG. 11 is an optional structural diagram of a core network device according to an embodiment of the present disclosure. The core network device is a first core network device 110, as shown in FIG. The first core network device 110 includes a transceiver module 1101.

The second transceiver module 1101 is configured to receive a resource request sent by the first terminal, where the resource request is used to request at least two access resources, and the at least two access resources are used to transmit at least two data streams to be transmitted. The preset synchronization condition is met between the at least two data streams to be transmitted.

The second transceiver module 1101 is further configured to send a resource indication to the first terminal, where the resource indication is used to indicate that the first terminal transmits the at least two to-be-transmitted data streams by using at least two types of access networks. One type of access network corresponds to at least one data stream to be transmitted.

In an embodiment of the present disclosure, optionally, the access network corresponding to the first core network device is the first access network of the at least two types of access networks; the at least two data to be transmitted The flow is M data to be transmitted, and the at least two types of access networks are M access networks; the resource request is used to request to transmit M access resources of the M data to be transmitted; Is an integer greater than or equal to 2. The second transceiver module 1101 may be configured to send a first resource indication to the first terminal, where the first resource indication includes N first access resources corresponding to the first access network, where N is greater than Or an integer equal to 1 and less than M; or, sending, to the first terminal, a second resource indication, where the second resource indication includes a second access network corresponding to the at least two types of access networks a P second access resource, where P is an integer greater than or equal to 1 and less than M; or, sending, to the first terminal, a first resource indication and a second resource indication, where the first resource indication includes An N access source corresponding to the N first access resources, where N is an integer greater than or equal to 1 and less than M, and the second resource indication includes a second access in the at least two types of access networks The P second access resources corresponding to the network, P is an integer greater than or equal to 1 and less than M; wherein, the sum of N and P is less than or equal to M.

In the embodiment of the present disclosure, the second core network device is configured to correspond to the second access network. The second transceiver module 1101 is configured to: after the first core network device acquires the resource request sent by the first terminal, The second core network device sends a split resource request, where the split resource request is used to request to transmit a second access resource of a part of the at least two to-be-transmitted data streams to be transmitted; the second access The access network corresponding to the resource is the second access network; and receiving the offload resource indication sent by the second core network device, where the offload resource indication includes the second access resource.

The core network device of this embodiment may be configured to perform the technical solution of the method embodiment shown in FIG. 3 to FIG. 6. The implementation principle and technical effects are similar, and details are not described herein again.

In an actual application, the first core network device shown in FIG. 11 may also adopt an optional implementation manner.

FIG. 12 is another schematic structural diagram of a core network device according to an embodiment of the present disclosure. As shown in FIG. 12, the first core network device 110 includes a memory 1203, a processor 1204, and is stored in the memory 1003 and may be in the processor. The data transfer program (not shown) running on 1204, when the processor 1204 executes the program, implements the following steps:

Receiving a resource request sent by the first terminal, where the resource request is used to request at least two access resources; the at least two access resources are used to transmit at least two data streams to be transmitted, and the at least two data to be transmitted The preset synchronization condition is met between the flows; the resource indication is sent to the first terminal, where the resource indication is used to indicate that the first terminal transmits the at least two data to be transmitted through at least two types of access networks. Flow, one type of access network corresponding to at least one data stream to be transmitted.

The first core network device 110 can also include an interface 1201, a bus 1202, the interface, the memory and the processor being connected by a bus, wherein the interface 1201 can be configured to establish a communication connection with the terminal 110. The interface may be a wired transmission interface or a wireless transmission interface. Illustratively, the interface may be a transmit or receive antenna or may be implemented by a program module integrated in a digital circuit processor. Optionally, the interface 1201 may be configured to establish a communication connection with the base station corresponding to the access network type of the first core network device, and communicate with the terminal through the base station.

Optionally, the access network corresponding to the first core network device is the first access network of the at least two types of access networks; and the at least two data streams to be transmitted are M to be transmitted data. And the at least two types of access networks are M access networks; the resource request is used to request to transmit M access resources of the M to be transmitted data streams; and M is an integer greater than or equal to 2; The processor is configured to: send, by the first terminal, a first resource indication, where the first resource indication includes N first access resources corresponding to the first access network, where N is An integer greater than or equal to 1 and less than M; or, sending a second resource indication to the first terminal, where the second resource indication includes a second access network corresponding to the at least two types of access networks a P second access resource, where P is an integer greater than or equal to 1 and less than M; or, sending, to the first terminal, a first resource indication and a second resource indication, where the first resource indication includes N first access resources corresponding to the first access network, where N is greater than An integer equal to 1 and smaller than M, the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is greater than or equal to 1 And an integer less than M; wherein the sum of N and P is less than or equal to M.

Optionally, the second core network device corresponds to the second access network; the processor reads the command, and is further configured to: after acquiring the resource request sent by the first terminal, send the offload resource to the second core network device. a request, the offload resource request is used to request to transmit a second access resource of a part of the at least two to-be-transmitted data streams, and the access network corresponding to the second access resource is the And receiving, by the second access network, the offload resource indication sent by the second core network device, where the offload resource indication includes the second access resource.

In practical applications, the processor may be a Central Processing Unit (CPU), a Micro Processor Unit (MPU), a Digital Signal Processor (DSP), or a field device located in a core network device. Implementation of a Field Programmable Gate Array (FPGA).

The core network device of this embodiment may be configured to perform the technical solution of the method embodiment shown in FIG. 4 to FIG. 8. The implementation principle and technical effects are similar, and details are not described herein again.

The embodiment of the present disclosure further provides a core network device, and FIG. 13 is a schematic diagram of another optional structure of the core network device according to the embodiment of the present disclosure. The core network device is a second core network device, as shown in FIG. The second core network device 130 includes a transceiver module 1301.

The third transceiver module 1301 is configured to acquire a split resource request sent by the first core network device, where the split resource request is used to request to transmit an access resource of a part of at least two to-be-transmitted data streams to be transmitted; The at least two data streams to be transmitted satisfy a preset synchronization condition; the type of the access network corresponding to the second core network device is different from the type of the access network corresponding to the first core network device.

The third transceiver module 1301 is further configured to send a offload resource indication to the first core network device, where the offload resource indication includes a second access resource corresponding to the access network corresponding to the second core network device.

The core network device of this embodiment may be configured to perform the technical solution of the method embodiment shown in FIG. 4 to FIG. 8. The implementation principle and technical effects are similar, and details are not described herein again.

In practical applications, the terminal shown in FIG. 13 can also adopt an optional implementation manner.

FIG. 14 is still another schematic structural diagram of a core network device according to an embodiment of the present disclosure. As shown in FIG. 14, the second core network device 130 includes a memory 1403, and a processor 1404, and is stored in the memory 1403 and can be processed. The data transfer program (not shown) running on the device 1404, when the processor 1404 executes the program, implements the following steps:

Acquiring, by the first core network device, a request for a split resource, where the split resource request is used to request to transmit an access resource of a part of at least two to-be-transmitted data streams; the at least two data streams to be transmitted are satisfied a preset synchronization condition; the type of the access network corresponding to the second core network device is different from the type of the access network corresponding to the first core network device; and the offload resource indication is sent to the first core network device, The offload resource indication includes a second access resource corresponding to the access network corresponding to the second core network device.

The second core network device 130 can also include an interface 1401, a bus 1402, the interface, the memory and the processor being connected by a bus, wherein the interface 1401 can be configured to establish a communication connection with the first core network device 110. The interface may be a wired transmission interface or a wireless transmission interface. Illustratively, the interface may be a transmit or receive antenna or may be implemented by a program module integrated in a digital circuit processor. Optionally, the interface 1401 may be configured to establish a communication connection with the base station corresponding to the access network type of the second core network device, and communicate with the terminal 90 through the base station.

In practical applications, the processor may be a Central Processing Unit (CPU), a Micro Processor Unit (MPU), a Digital Signal Processor (DSP), or a field device located in a core network device. Implementation of a Field Programmable Gate Array (FPGA).

The core network device of this embodiment may be configured to perform the technical solution of the method embodiment shown in FIG. 4 to FIG. 8. The implementation principle and technical effects are similar, and details are not described herein again.

The embodiment of the present disclosure further provides a storage medium storing a data transmission program, where the data transmission program is configured to:

Acquiring at least two types of candidate access networks; dividing the service data stream to be transmitted into at least two data streams to be transmitted according to a quality of service level; and satisfying a preset synchronization condition between the at least two data streams to be transmitted; Determining an access network corresponding to each to-be-transmitted data stream from the candidate access network according to a quality of service level of each of the at least two to-be-transmitted data streams; The access network corresponding to the to-be-transmitted data stream transmits the each data stream to be transmitted.

Other technical solutions and technical effects of the embodiments of the present disclosure are similar to the foregoing related embodiments of the terminal, and are not described herein again.

The embodiment of the present disclosure further provides another storage medium, where a data transmission program is stored, where the data transmission program is configured to:

Receiving a resource request sent by the first terminal, where the resource request is used to request at least two access resources; the at least two access resources are used to transmit at least two data streams to be transmitted, and the at least two data to be transmitted The preset synchronization conditions are met between the streams;

And sending, by the first terminal, a resource indication, where the resource indication is used to indicate that the first terminal transmits the at least two to-be-transmitted data streams by using at least two types of access networks, where one type of access network corresponds to At least one stream of data to be transmitted.

Other technical solutions and technical effects of the embodiments of the present disclosure are similar to the related embodiments of the first core network device, and are not described herein again.

The embodiment of the present disclosure further provides another storage medium, where the data transmission program is stored, where the data transmission program is configured to:

Acquiring, by the first core network device, a request for a split resource, where the split resource request is used to request to transmit an access resource of a part of at least two to-be-transmitted data streams; the at least two data streams to be transmitted are satisfied a preset synchronization condition; the type of the access network corresponding to the second core network device is different from the type of the access network corresponding to the first core network device;

Sending, by the first core network device, a offload resource indication, where the offload resource indication includes a second access resource corresponding to the access network corresponding to the second core network device.

Other technical solutions and technical effects of the embodiments of the present disclosure are similar to the related embodiments of the second core network device, and are not described herein again.

Embodiments of the present disclosure also provide a computer readable storage medium storing computer executable instructions that, when executed, implement the data transfer method described above.

It is to be understood that the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes those elements. It also includes other elements that are not explicitly listed, or elements that are inherent to such processes, methods, articles, or devices. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The above-mentioned serial numbers of the embodiments of the present disclosure are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware. Based on such understanding, portions of the technical solutions of the present disclosure that contribute substantially or to the prior art may be embodied in the form of a software product stored in a storage medium (eg, ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the methods described in the different embodiments of the present disclosure.

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 components; 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 include, but are not limited to, Random Access Memory (RAM), Read-Only Memory (ROM), and Electrically Erasable Programmable Read-only Memory (EEPROM). Flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical disc storage, magnetic cassette, magnetic tape, disk storage or other magnetic storage device, or 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. .

A person skilled in the art can understand that the technical solutions of the present disclosure may be modified or equivalent, without departing from the spirit and scope of the present disclosure, and should be included in the scope of the claims of the present disclosure.

Industrial applicability

An embodiment of the present disclosure provides a data transmission method, by dividing a service data stream to be transmitted into at least two data streams to be transmitted according to a quality of service level, and satisfying a preset synchronization condition between the at least two data streams to be transmitted, and acquiring Determining, by the at least two types of candidate access networks, an access network corresponding to each data stream according to a quality of service level of each of the at least two to-be-transmitted data streams, through each data stream to be transmitted The corresponding access network transmits the each data stream to be transmitted, thereby reducing network load on the basis of ensuring delay stability of image or sound data transmission.

Claims (25)

A data transmission method, the method comprising: The terminal acquires at least two types of candidate access networks; The terminal divides the service data stream to be transmitted into at least two data streams to be transmitted according to the quality of service level; and the preset synchronization conditions are met between the at least two data streams to be transmitted; Determining, by the terminal, the access network corresponding to each to-be-transmitted data stream from the candidate access network according to a quality of service level of each of the at least two to-be-transmitted data streams; The terminal transmits the each data stream to be transmitted through the access network corresponding to each data stream to be transmitted. The method of claim 1 wherein said at least two streams of data to be transmitted are voice data streams and video image data streams in a video call. The method according to claim 1, wherein said determining said each to be transmitted from said candidate access network according to a quality of service level of each of said at least two data streams to be transmitted The access network corresponding to the data stream, including: The terminal sorts the at least two types of candidate access networks according to service capability levels of various types of candidate access networks; The terminal correspondingly associates each of the to-be-transmitted data streams with the at least two types of access networks in order from highest to lowest, and obtains an access network corresponding to each of the to-be-transmitted data streams. The method according to claim 1, wherein the terminal acquires at least two types of candidate access networks, including: The terminal acquires at least two access resources; the at least two access resources correspond to the at least two types of access networks, and any access resource corresponds to one access network; Determining the at least two candidate access networks according to the at least two access resources. The method according to claim 4, wherein the terminal acquires at least two access resources, including: The terminal sends a resource request to the first core network device, where the resource request is used to request to transmit at least two access resources of the at least two data streams to be transmitted; and the access network corresponding to the first core network device a first access network of the at least two types of access networks; The terminal receives the resource indication sent by the first core network device, where the resource indication is used to indicate that the terminal transmits at least two data streams to be transmitted through at least two types of access networks. The method of claim 5, before the terminal sends a resource request to the first core network device, the method further includes: Transmitting, by the terminal, the multi-network access capability information to the first core network device, where the multi-network access capability information indicates that the terminal has access to the second access in the at least two types of access networks The ability of the network. The method of claim 5, wherein The at least two types of access networks further include a second access network; Sending, by the terminal, a resource request to the first core network device, including: The terminal sends a first resource request to the first core network device, where the first resource request is used to request at least one first access resource, where the first access resource corresponds to the first access network; The terminal sends a second resource request to the first core network device, where the second resource request is used to request at least one second access resource, and the second access resource corresponds to the second access network. The method according to claim 5, wherein the at least two data streams to be transmitted are M to be transmitted data streams, and the at least two types of access networks are M access networks; M is greater than or equal to 2 An integer request; the resource request is used to request to transmit M access resources of the M to be transmitted data streams; Receiving, by the terminal, the resource indication sent by the first core network device, including: Receiving, by the terminal, the first resource indication sent by the first core network device, where the first resource indication includes N first access resources corresponding to the first access network, where N is greater than or equal to 1 and An integer less than M; or, Receiving, by the terminal, a second resource indication sent by the first core network device, where the second resource indication includes P second connections corresponding to a second access network of the at least two types of access networks Into the resource, P is an integer greater than or equal to 1 and less than M; or, The terminal receives the first resource indication and the second resource indication sent by the first core network device, where the first resource indication includes N first access resources corresponding to the first access network, where N is An integer greater than or equal to 1 and less than M, the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is greater than or equal to 1 and an integer less than M; Wherein, the sum of N and P is less than or equal to M. The method according to claim 1, wherein the preset synchronization condition is that the variance of the time at which the at least two data packets sent at the same time in the at least two data streams to arrive at the receiver are less than a threshold Time threshold. The method according to claim 1, wherein the at least two types of access networks comprise: a long term evolution LTE access network, a wireless fidelity WiFi access network, a wideband code division multiple access WCDMA access network, and a code division. At least two of the multiple access CDMA access networks. A data transmission method includes: Receiving, by the first core network device, a resource request sent by the first terminal, where the resource request is used to request at least two access resources; and the at least two access resources are used to transmit at least two data flows to be transmitted, where the at least two The preset synchronization condition is met between the two data streams to be transmitted; The first core network device sends a resource indication to the first terminal, where the resource indication is used to indicate that the first terminal transmits the at least two data streams to be transmitted through at least two types of access networks, The types of access networks correspond to at least one data stream to be transmitted. The method according to claim 11, wherein the access network corresponding to the first core network device is the first access network of the at least two types of access networks; The at least two to-be-transmitted data streams are M to-be-transmitted data streams, and the at least two types of access networks are M access networks; the resource request is used to request to transmit the M to-be-transmitted data streams. M access resources; M is an integer greater than or equal to 2; The first core network device sends a resource indication to the first terminal, including: The first core network device sends a first resource indication to the first terminal, where the first resource indication includes N first access resources corresponding to the first access network, where N is greater than or equal to 1 And an integer less than M; or, The first core network device sends a second resource indication to the first terminal, where the second resource indication includes P seconds corresponding to the second access network of the at least two types of access networks. Accessing resources, P is an integer greater than or equal to 1 and less than M; or, The first core network device sends a first resource indication and a second resource indication to the first terminal, where the first resource indication includes N first access resources corresponding to the first access network, where For an integer greater than or equal to 1 and less than M, the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is greater than or An integer equal to 1 and less than M; Wherein, the sum of N and P is less than or equal to M. The method of claim 12, wherein The second core network device corresponds to the second access network; After the first core network device obtains the resource request sent by the first terminal, the method further includes: The first core network device sends a split resource request to the second core network device, where the split resource request is used to request to transmit a second access of a part of the at least two to-be-transmitted data streams to be transmitted. a resource; the access network corresponding to the second access resource is the second access network; Receiving, by the second core network device, a traffic off resource indication, where the traffic off resource indication includes the second access resource. A data transmission method includes: The second core network device obtains a request for a split resource sent by the first core network device, where the split resource request is used to request to transmit an access resource of a part of at least two to-be-transmitted data streams to be transmitted; The data stream to be transmitted satisfies a preset synchronization condition; the type of the access network corresponding to the second core network device is different from the type of the access network corresponding to the first core network device; The second core network device sends a split resource indication to the first core network device, where the split resource indication includes a second access resource corresponding to the access network corresponding to the second core network device. A terminal, the terminal comprising: The first transceiver module is configured to acquire at least two types of candidate access networks; The processing module is configured to divide the service data flow to be transmitted into at least two data streams to be transmitted according to a quality of service level; the preset synchronization conditions are met between the at least two data streams to be transmitted; a quality of service level of each of the at least two to-be-transmitted data streams, and determining, by the candidate access network, an access network corresponding to each of the to-be-transmitted data streams; The first transceiver module is further configured to transmit the data stream to be transmitted by using an access network corresponding to each data stream to be transmitted. The terminal according to claim 15, the processor is further configured to: Sorting the at least two types of candidate access networks according to service capability levels of various types of candidate access networks; And each of the to-be-transmitted data streams is in one-to-one correspondence with the at least two types of access networks according to a level from high to low, to obtain an access network corresponding to each of the to-be-transmitted data streams. A core network device, where the core network device is a first core network device, and the first core network device includes: a second transceiver module, configured to receive a resource request sent by the first terminal, where the resource request is used to request at least two access resources; and the at least two access resources are used to transmit at least two data streams to be transmitted, where Satisfying a preset synchronization condition between at least two data streams to be transmitted; The second transceiver module is further configured to send a resource indication to the first terminal, where the resource indication is used to indicate that the first terminal transmits the at least two to-be-transmitted data by using at least two types of access networks. Flow, one type of access network corresponding to at least one data stream to be transmitted. The core network device according to claim 17, wherein the access network corresponding to the first core network device is the first access network of the at least two types of access networks; The at least two to-be-transmitted data streams are M to-be-transmitted data streams, and the at least two types of access networks are M access networks; the resource request is used to request to transmit the M to-be-transmitted data streams. M access resources; M is an integer greater than or equal to 2; The second transceiver module is configured to: Transmitting, by the first terminal, a first resource indication, where the first resource indication includes N first access resources corresponding to the first access network, where N is an integer greater than or equal to 1 and less than M; or , Sending, by the first terminal, a second resource indication, where the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is greater than Or an integer equal to 1 and less than M; or, Transmitting, by the first terminal, a first resource indication and a second resource indication, where the first resource indication includes N first access resources corresponding to the first access network, where N is greater than or equal to 1 and less than An integer of M, where the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is an integer greater than or equal to 1 and less than M ; Wherein, the sum of N and P is less than or equal to M. A core network device, where the core network device is a second core network device, and the second core network device includes: a third transceiver module, configured to acquire a split resource request sent by the first core network device, where the split resource request is used to request to access an access resource of a part of at least two to-be-transmitted data streams to be transmitted; The two data streams to be transmitted satisfy a preset synchronization condition; the type of the access network corresponding to the second core network device is different from the type of the access network corresponding to the first core network device; Sending, by the first core network device, a offload resource indication, where the offload resource indication includes a second access resource corresponding to the access network corresponding to the second core network device. A terminal, the terminal comprising: A memory, a processor, and a data transfer program stored on the memory and operable on the processor, the processor performing the following steps when executing the program: Obtaining at least two types of candidate access networks; Divide the service data stream to be transmitted into at least two data streams to be transmitted according to a quality of service level; and satisfy a preset synchronization condition between the at least two data streams to be transmitted; Determining, according to a quality of service level of each of the at least two data streams to be transmitted, an access network corresponding to each data stream to be transmitted from the candidate access network; And transmitting each of the to-be-transmitted data streams by using an access network corresponding to each of the to-be-transmitted data streams. The terminal of claim 20, wherein said program is executed by said processor to implement the following steps: Sorting the at least two types of candidate access networks according to service capability levels of various types of candidate access networks; And each of the to-be-transmitted data streams is in one-to-one correspondence with the at least two types of access networks according to a level from high to low, to obtain an access network corresponding to each of the to-be-transmitted data streams. A core network device, where the core network device is a first core network device, and the first core network device includes: A memory, a processor, and a data transfer program stored on the memory and operable on the processor, the processor performing the following steps when executing the program: Receiving a resource request sent by the first terminal, where the resource request is used to request at least two access resources; the at least two access resources are used to transmit at least two data streams to be transmitted, and the at least two data to be transmitted The preset synchronization conditions are met between the streams; And sending, by the first terminal, a resource indication, where the resource indication is used to indicate that the first terminal transmits the at least two to-be-transmitted data streams by using at least two types of access networks, where one type of access network corresponds to At least one stream of data to be transmitted. The core network device according to claim 22, wherein the access network corresponding to the first core network device is the first access network of the at least two types of access networks; The at least two to-be-transmitted data streams are M to-be-transmitted data streams, and the at least two types of access networks are M access networks; the resource request is used to request to transmit the M to-be-transmitted data streams. M access resources; M is an integer greater than or equal to 2; The program is implemented by the processor to implement the following steps: Transmitting, by the first terminal, a first resource indication, where the first resource indication includes N first access resources corresponding to the first access network, where N is an integer greater than or equal to 1 and less than M; or , Sending, by the first terminal, a second resource indication, where the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is greater than Or an integer equal to 1 and less than M; or, Transmitting, by the first terminal, a first resource indication and a second resource indication, where the first resource indication includes N first access resources corresponding to the first access network, where N is greater than or equal to 1 and less than An integer of M, where the second resource indication includes P second access resources corresponding to the second access network of the at least two types of access networks, where P is an integer greater than or equal to 1 and less than M ; Wherein, the sum of N and P is less than or equal to M. A core network device, where the core network device is a second core network device, and the second core network device includes: A memory, a processor, and a data transfer program stored on the memory and operable on the processor, the processor performing the following steps when executing the program: Acquiring, by the first core network device, a request for a split resource, where the split resource request is used to request to transmit an access resource of a part of at least two to-be-transmitted data streams; the at least two data streams to be transmitted are satisfied a preset synchronization condition; the type of the access network corresponding to the second core network device is different from the type of the access network corresponding to the first core network device; Sending, by the first core network device, a offload resource indication, where the offload resource indication includes a second access resource corresponding to the access network corresponding to the second core network device. A storage medium storing a data transmission program, wherein the data transmission program is configured to: Acquiring at least two types of candidate access networks; dividing the service data stream to be transmitted into at least two data streams to be transmitted according to a quality of service level; and satisfying a preset synchronization condition between the at least two data streams to be transmitted; Determining an access network corresponding to each to-be-transmitted data stream from the candidate access network according to a quality of service level of each of the at least two to-be-transmitted data streams; The access network corresponding to the to-be-transmitted data stream transmits the each data stream to be transmitted.

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