WO2017008701A1

WO2017008701A1 - Data transmission method, apparatus, and user device

Info

Publication number: WO2017008701A1
Application number: PCT/CN2016/089419
Authority: WO
Inventors: 黄俊源; 车晓东
Original assignee: 努比亚技术有限公司
Priority date: 2015-07-10
Filing date: 2016-07-08
Publication date: 2017-01-19

Abstract

A data transmission method, apparatus, and user device, the data transmission method comprising: a terminal detects in real time the connectivity of each port; when detecting that data requires transmission, and on the basis of an initial flow division weighting, the terminal allocates a plurality of established links to ports in a connected state to implement data transmission; during the data transmission process, calculating in real-time the flow division weighting, and on the basis of the real-time flow division weighting, allocating newly established links to ports in a connected state to implement data transmission. The beneficial effects of the embodiments of the present invention are: allocating links to each port on the basis of flow division weighting, implementing simultaneous transmission of data using a plurality of data channels, and greatly optimising the data flow allocation ratio, thus reducing the congestion, delay, and packet loss rate of the ports, and improving the user experience.

Description

Data transmission method, device and user equipment

Technical field

The embodiments of the present invention relate to, but are not limited to, the field of communications technologies, and in particular, to a data transmission method, apparatus, and user equipment.

Background technique

With the development of mobile communication technologies, advanced cellular networks, such as those based on the Long Term Evolution (LTE) standard, standard networks such as those used in some fourth generation mobile communication technology (4G) networks are being deployed worldwide. Due to the introduction of key technologies such as Orthogonal Frequency Division Multiplexing (OFDM) and Multi-Input & Multi-Output (MIMO), the LTE standard can significantly increase the spectrum efficiency and data transmission rate.

The terminal uses the cellular network for data transmission such as downloading and uploading, which can greatly improve the user's online experience. However, with the development of technology, high-definition video, games and other large-volume applications are emerging one after another. If only a single data channel is used for data transmission, due to the maximum capacity limitation of the data channel, the user's increasing demand for transmission rate cannot be met. of.

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.

The embodiment of the invention provides a data transmission method, device and user equipment, which can meet the increasing demand of the user for the transmission rate.

The embodiment of the invention provides a data transmission method, which is applicable to a terminal having multiple wireless data transmission interfaces, including:

The terminal detects the connectivity of each wireless data transmission interface in real time;

When detecting that there is data to be transmitted, the terminal allocates the established multiple links to the wireless data transmission interface in the connected state for data transmission based on the initial split weight;

In the process of data transmission, the real-time shunt weight is calculated, and the newly established link is allocated to the wireless data transmission interface in the connected state according to the real-time shunt weight for data transmission.

Optionally, when the terminal detects that data needs to be transmitted, the multiple links that are established are allocated to the interface in the connected state for data transmission, according to the initial split weight, including:

When the terminal detects that there is data to be transmitted, the multiple connection request messages are evenly distributed to the wireless data transmission interface in the connected state for transmission;

Receiving, by the respective wireless data transmission interfaces of the terminal, an acknowledgement message replied by the receiving device, to establish a plurality of links for transmitting data between the terminal and the receiving device.

Optionally, in the process of data transmission, the real-time offload weight is calculated, and the newly established link is allocated to the interface in the connected state according to the real-time split weight for data transmission, including:

The split weight is calculated according to the rate and the delay of the wireless data transmission interface, or the split weight is calculated according to the rate of the wireless data transmission interface;

Based on the calculated real-time offload weight, the newly created link is allocated according to the real-time split weight to the wireless data transmission interface in the connected state for data transmission.

Optionally, the method further includes:

If the wireless data transmission interface in the connected state becomes disconnected during the transmission of the data, the link transmitted through the wireless data transmission interface is suspended;

And continuing the data transmission of the link by means of the new link.

Optionally, the method further includes detecting a status of the wireless data transmission interface, including:

Sending a ping message from each wireless data transmission interface to the preset server every first preset time;

Waiting for the second preset time, if the reply message is not received, the wireless data transmission interface is in a disconnected state, and if the reply message is received, the wireless data transmission interface is in a connected state.

Optionally, the method further includes: acquiring, at a preset time, a change in the number of bytes of the wireless data transmission interface as a current rate of the wireless data transmission interface.

Optionally, the method further includes:

Before the real-time offloading weight is calculated, detecting whether the wireless data transmission interface is in a congested state, and if yes, determining whether a current rate of the wireless data transmission interface is greater than a maximum of the interface If the rate is not greater than the maximum rate, the current rate is added to a preset value and then compared with the maximum rate. If the current rate is less than the maximum rate, the current rate is used as the maximum rate of the wireless data transmission interface.

If the wireless data transmission interface is not in a congested state and the current rate is greater than the maximum rate, the current rate is used as the maximum rate of the wireless data transmission interface.

Optionally, the calculating real-time offload weights includes:

Comparing the maximum rate with a preset value, if the maximum rate is greater than a preset value, calculating a split weight according to a maximum rate of the wireless data transmission interface; if the maximum rate is not greater than a preset value, according to the The delay of the wireless data transmission interface determines the split weight.

Optionally, the offload weight of any of the wireless data transmission interfaces is a ratio of a maximum rate of the wireless data transmission interface to a sum of maximum rates of all interfaces.

Optionally, when a syn+ack message is received through a wireless data transmission interface, it is determined whether it is in the SYN_SEND state, and if it is in the SYN_SEND state, the current system time is obtained, and the obtained current system time is subtracted. The time when the system sends the syn message, and the obtained time difference is the delay of the wireless data transmission interface.

Optionally, the method further includes:

A set of ping messages is sent through each of the wireless data transmission interfaces at a preset time, and the time delay of the wireless data transmission interface is obtained according to the time difference of receiving the reply information.

Optionally, the delay of the wireless data transmission interface is inversely proportional to the weight of the traffic of the wireless data transmission interface.

Optionally, the method further includes:

Obtaining each of the linked data packets, and determining whether the link tracking status of the obtained data packet is the first data packet;

If it is the first data packet, the data packet is marked according to the traffic weight, and the tag value is saved; if it is not the first data packet, the tag of the first data packet of the link is saved. The value is assigned to the data packet;

The method further includes allocating the data packet to the corresponding wireless data transmission interface for transmission according to the tag value of the data packet.

Optionally, the multiple wireless data transmission interfaces include at least one of the following interfaces: a first long term evolution LTE interface, a second LTE interface, a first wireless local area network WIFI interface, and a second WIFI interface.

The embodiment of the invention further provides a data transmission method, which is applicable to a terminal having multiple wireless data transmission interfaces, including:

When the terminal detects that there is data to be transmitted, the established multiple links are allocated to the wireless data transmission interface in the connected state for data transmission based on the pre-stored offload weights.

Optionally, the pre-stored offload weight is a real-time offload weight used by the terminal in the last data transmission.

Optionally, the method further includes:

During the transmission of the data service, the offload weight is calculated according to the rate and delay of the wireless data transmission interface, or the split weight is calculated according to the rate of the wireless data transmission interface;

And based on the calculated real-time split weight, the newly-added link is allocated according to the real-time split weight to the wireless data transmission interface in the connected state for data transmission.

The embodiment of the present invention further provides a user equipment, including a first user identification module and a second user identification module, and further includes:

First communication module;

a second communication module;

Switching module; and

The control module is configured to output the first control instruction and the second control instruction according to the operation instruction of the user;

The control module is further configured to control the switching module according to the first control instruction, so that the first user identification module or the second user identification module is connected to the first communication module;

The first communication module is configured to establish a data service connection with the LTE network for data service transmission;

The control module is further configured to control the switching module according to the second control instruction, so that the first user identification module or the second user identification module is connected to the second communication module;

The second communication module is configured to establish a data service connection with the LTE network for data service transmission;

The control module is further configured to detect connectivity of the first communication module and the second communication module; when detecting that data needs to be transmitted, assign the established multiple links to the communication module in the connected state based on the initial split weight Data transmission; in the process of data transmission, the real-time shunt weight is calculated, and the newly established link is allocated to the communication module in the connected state according to the real-time shunt weight for data transmission.

Optionally, the user equipment further includes:

Two WIFI modules, configured to connect to a WIFI network for data transmission;

The control module is further configured to detect connectivity of each interface in real time; when detecting that data needs to be transmitted, the established multiple links are allocated to the wireless data transmission interface in the connected state for data transmission based on the initial split weight; In the process of data transmission, calculating the real-time shunt weight, and assigning the newly established link to the wireless data transmission interface in the connected state according to the real-time shunt weight for data transmission;

The wireless data transmission interface includes: a first LTE interface corresponding to the first communication module, a second LTE interface corresponding to the second communication module, and a corresponding to the two WIFI modules respectively A WIFI interface and a second WIFI interface.

The embodiment of the invention further discloses a computer readable storage medium storing computer executable instructions for performing one or a combination of the above two service negotiation methods.

The data transmission method, device and user equipment embodying the invention have the following beneficial effects: based on interface rate offloading, or based on interface rate and delay shunt, realizing data transmission by using multiple data channels simultaneously, greatly optimizing data flow. Distribution ratio; since the rate reflects the bandwidth of the interface to a certain extent, the interface with large bandwidth should carry more data streams, so that it is not easy to have a large amount of data flowing from the interface with small bandwidth, which alleviates the congestion of the interface with small bandwidth. , shortening the data transmission delay, reducing the situation of packet loss, improving the user test; on the other hand, breaking through the current market only The single user identification module can be used to carry out the limitation of data service transmission, and the maximum rate of data transmission is improved, so that users can transmit data services through better links.

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

BRIEF abstract

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

2 is a block diagram of an operating system according to an embodiment of the present invention;

3 is a schematic diagram of a network architecture according to an embodiment of the present invention;

4 is a schematic flow chart of a data transmission method according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of detecting interface connectivity according to an embodiment of the present invention; FIG.

6 is a flowchart of a data transmission method according to an embodiment of the present invention;

7 is a schematic flow chart of marking a data packet in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a user equipment having a dual L function according to an embodiment of the present invention.

Preferred embodiment of the invention

For a better understanding of the technical features, objects and effects of the present invention, the embodiments of the present invention are described in detail with reference to the accompanying drawings.

1 is a schematic structural diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 1, the terminal 100 may have a personal computer such as a laptop computer, a netbook computer, a tablet computer, etc., a cellular phone, and a personal digital assistant ( Any of various configurations such as PDA), digital video recorder (DVR), Internet home appliances, game consoles, and electronic readers. The architecture of the terminal 100 may include a processor 1, a communication module 2, a memory 4, and a subscriber identity module 5. It should be understood that, in addition, the terminal 100 may further include: a display screen, a speaker, an earpiece, a camera, a power management, and the like for performing corresponding functions.

The memory 4 can store software for operating system, processing, and control operations performed by the processor 1. Programs and more. The memory 4 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card type memory (eg, SD or DX memory, etc.), a random access memory (RAM), a static random access memory ( SRAM), read only memory (ROM), electrically erasable programmable read only memory (EEPROM), programmable read only memory (PROM), magnetic memory, magnetic disk, optical disk, and the like. Moreover, the terminal 100 can cooperate with a network storage device that performs a storage function of the memory 4 through a network connection.

The processor 1 is the core of the terminal communication function and system control, and is mainly responsible for completing the two aspects of work. First, the baseband processing capability of the physical layer of the protocol stack is completed, including digital joint detection, modulation/demodulation, interleaving/deinterleaving, and channel coding. / decoding, pulse shaping, etc.; the second is to deal with operating systems, driver software, human-machine interfaces, applications, and so on. At the same time, the processor has the ability to manage various peripherals and interfaces.

In an embodiment of the invention, communication module 2 typically includes one or more components that permit radio communication between terminal 100 and a wireless communication system or network. For example, the communication module 2 includes a first communication module 21, a second communication module 22, a third communication module 23, and the like. In one embodiment, the first communication module 21 can be a WIFI module. The WIFI module performs communication according to the WIFI method. Thus, the terminal 100 of the embodiment of the present invention can perform data transmission through the WIFI network.

The second communication module 22 can be a mobile communication module. The mobile communication module is configured to transmit communication exchange signaling to one or more base stations or other devices in the wireless communication system, or to receive communication exchange signaling from one or more base stations or other devices. For example, the mobile communication module 2 can include one or more of a transmitter, a receiver, a transmit chain component, and a receive chain component. In some embodiments, the mobile communication module 2 may be a chip that performs communication according to various communication standards such as IEEE, Zigbee, 3G (third generation), 3GPP (3rd Generation Partnership Project), and LTE (Long Term Evolution). Thus, the terminal 100 of the embodiment of the present invention can perform data transmission through a mobile communication network (for example, a mobile communication network such as 2G, 3G, or 4G).

The third communication module 23 can also be a WIFI module or a mobile communication module. Thus, the terminal 100 of the embodiment of the present invention may include one or more WIFI modules, one or more mobile communication modules.

It should be understood that the communication module 2 may further include a Bluetooth module, an NFC module, or the like for implementing a corresponding wireless communication function.

The subscriber identity module 5 can manage users associated with the first technical standard. The subscriber identity module 5 can have one or more associated telephone numbers. The terminal 100 can pass the user identification module 5 and move The communication module communicates in the network via the base station.

In one embodiment, the subscriber identity module 5 can be one or more. It should be understood that the number of subscriber identity modules 5 is associated with the number of mobile communication modules. For example, when the terminal 100 includes two mobile communication modules, generally two user identification modules 5 are included to implement dual card dual communication; when the terminal 100 includes a mobile communication module, one (single card single pass) or two may be included. (Double card single standby) user identification module 5.

See the invention patent application with the application number 201510671407.1, 201510675596.X and the application number 201510827714.4, which respectively introduces the technical solutions for realizing the data transmission of the terminal using dual LTE by using different technical solutions. Based on the above three prior applications, the terminal 100 in the embodiment of the present invention can implement data transmission by using one or two LTE data channels. It should be understood that the dual LTE data transmission may also be implemented in other manners, for example, directly adopting a chip having the function, an external subscriber identity module, and the like.

Based on the above description, the terminal 100 of the embodiment of the present invention may perform data transmission by using at least one of the following methods: a WIFI data channel (which may be one or more), and an LTE data channel (which may be one or more) ), 3G data channel (may be one or more), 2G data channel (can be one or more). It should be understood that in some cases, some data channels cannot coexist. For example, for the same mobile communication module, it can only provide an LTE data channel or a 3G data channel, but not both. However, for different mobile communication modules, LTE data channels and 3G data channels can be provided simultaneously.

It should be understood that when there are multiple WIFI data channels, the terminal 100 includes multiple WIFI modules.

In an embodiment of the present invention, a plurality of operating systems may be stored in the memory 101, including but not limited to Windows, Linux, Unix, Mac OS X, IOS, Solaris, Android, and the like.

In one embodiment, the operating system involved in FIG. 1 is stored in the memory 4 and processed by the processor 1. The architecture of the operating system processed by the processor 1 is as shown in FIG. 2, including: a driver layer, a kernel layer, and a user layer. . The kernel layer includes: a network interface layer, a network layer, a Transmission Control Protocol/User Datagram Protocol (TCP/UDP) layer, and a kernel interface.

FIG. 3 is a schematic diagram of a network architecture according to an embodiment of the present invention. The terminal 100 can simultaneously pass the base The station, the wireless access point (AP) and the like are connected to the wireless core network, and then connected to the private network and the Internet network to realize wireless data transmission. On the other hand, the plurality of terminals 100 can also be connected to the wireless core network through the base station and the wireless access point, thereby realizing mutual data transmission.

Example 1

Based on the foregoing terminal 100 and network architecture, an embodiment of the present invention provides a data transmission method. The data transmission in the embodiment of the present invention is based on a link, that is, when there is a data service to be transmitted, multiple (one or more) links are established, and each link is used to transmit a data packet of a certain size, thereby completing the entire data transmission. .

In this embodiment, the terminal (having the hardware structure and corresponding functions of the terminal 100 described above) acquires resources (for example, downloads an application) from the receiving device. The resource supports multi-link download, that is, the resource is divided into multiple data blocks, and each data block can be downloaded through a link, thereby downloading at the same time through multiple links, which can greatly improve the download speed.

In the embodiment of the present invention, the receiving device is a server, another terminal, or the like.

The terminal detects if there is data to transmit. Through the input device of the terminal, the user can initiate a data transfer instruction, whereby data can be detected to be transmitted.

In the embodiment of the present invention, the terminal and the receiving device establish a link by using a “three-way handshake” manner. When a link is established, the terminal first generates a connection request message (syn). In the embodiment of the present invention, when the terminal sends a connection request message through the corresponding interface, the terminal determines, according to the offload weight, which interface the link is transmitted, and The connection request message is sent to the receiving device through the determined interface. The receiving device receives the connection request message and replies with an acknowledgement message (ACK). The terminal receives the acknowledgment message through the interface that sends the connection request message, and sends an acknowledgment message (ACK) to the receiving device through the interface, thereby successfully establishing a TCP link. Once the link is established, the data can be transferred via the established link. As described above, in the embodiment of the present invention, the resource to be transmitted is divided into a plurality of data blocks, and each data block is transmitted by a link. Thus, after the link is established, a data block is transmitted. When the data block is transferred, the TCP link is released (can be released by "four-way handshake").

After the link for completing the data transfer is released, the terminal can continue to create a new link to ensure that the resource is completely downloaded. Therefore, in theory, if the resource to be transmitted is divided into N data blocks, at least To establish N links for data transmission. If the link is disconnected due to the connectivity of the interface becoming disconnected during the transmission, you need to create a new link to continue the data transmission.

For example, if the transmission resource has 8 data blocks, it can be allocated to 4 data blocks of the LTE channel and distributed to 4 data blocks of the WiFi channel. Then, the present application uses two data channels of the LTE channel and the WiFi channel. Four TCP/IP data links are respectively established for simultaneous data transmission.

Referring to FIG. 4, a data transmission method according to an embodiment of the present invention includes:

Step S1: The terminal detects the connectivity of each interface in real time.

It should be understood that detecting the connectivity of the interface means detecting whether the data channel is connected. For example, detecting the connectivity of the WIFI interface, that is, detecting whether the WIFI network can be accessed through the WIFI data channel for data transmission.

In the embodiment of the present invention, the interface includes but is not limited to a WIFI interface, an LTE interface, a 3G interface, and the like. The number of interfaces may be multiple, and the types of interfaces may be multiple. For example, the interface may include two LTE interfaces and two WIFI interfaces.

In one embodiment, referring to Figure 5, interface connectivity detection proceeds as follows:

A ping message is sent from each interface every first preset time (for example, 10 seconds). The destination IP address of the ping is the address of a fixed domain name system (DNS) server, for example, 114.114.114.114.

Waiting for the second preset time (for example, 10 seconds), if the reply is not received, the interface is marked as down, and if a reply is received, the interface is marked as connected (UP).

In some embodiments, if the interface is in a connected state and waits for a preset duration to receive no reply, the interface is marked as not connected. If the interface is in the disconnected state and waits for the preset duration to receive a reply, the link is considered to be connected and the interface is marked as connected.

If an interface is in the connected (UP) state, the interface can be added to the list of available interfaces; if an interface is down, it is not added to the available interface list or from the available interface. Remove from the list.

It should be understood that the description of the connectivity of the interface is only used as an example, and is not used for the protection scope of the embodiment of the present invention.

The connectivity of the interface can also be performed in other ways, such as sending empty packets.

Step S2: When the terminal detects that there is a data service, multiple links are established.

Establishing a link means establishing a link between the terminal 100 and other terminals or servers, for example, establishing a link through a three-way handshake. The number of links can be set according to actual conditions, for example, the maximum number of links that the terminal 100 can support, the amount of data of the data service, and the like.

The establishment of the link here refers to the generation of a connection request message. It should be understood that how many connection request messages need to be generated, how many link requests need to be created.

S3. The terminal allocates the established link to the interface in the connected state to perform data service transmission with the receiving device according to the split weight.

In the embodiment of the present invention, the offload weight includes a 1:1 offload weight (ie, an initial split weight) and a real-time split weight calculated according to the interface rate and the delay. The following two cases are described separately:

(1) Assign the established link to the connected interface according to the 1:1 split weight

In the embodiment of the present invention, an initial routing rule may be established according to the connectivity of the interface. The initial routing rule can be established in a uniform manner, that is, according to the initial split weight of 1:1, the number of links to be transmitted allocated by the interface in the connected state is the same. For example, if three interfaces are in the connected state and the number of links established by the terminal 100 is nine, the initial routing rule is that the first, second, and third links are transmitted through the first interface, and the fourth, fifth, and sixth links are passed through the first. The second interface transmits, and the seventh, eighth and nine links are transmitted through the third interface.

In some embodiments of the present invention, when data is transmitted, data is first transmitted in accordance with an initial routing rule. The connection request packets to be generated are distributed to each interface for transmission. The receiving device receives the connection request message and replies with an acknowledgement message for each connection request message. The acknowledgement message is respectively replied to the terminal via the corresponding interface. The terminal receives the acknowledgment message through each interface and sends an acknowledgment message to establish multiple TCP links between the terminal and the receiving device for transmitting data. The plurality of links in the embodiment of the present invention may include one or more links unless otherwise specified.

It should be understood that, in the embodiment of the present invention, after the link is established between the terminal and the receiving device, data transmission can be performed, and when the link completes the data transmission task, it is released. Thus, in the embodiment of the present invention, the link established at the beginning of the transmission is allocated according to the initial routing rule. If the establishment of these links has completed the transfer of all resources, there is no need to create a new link to continue the transfer, otherwise a new link will be created for the transfer of resources until all resource transfers are completed. The newly created link will follow the directions below Equation (2) is assigned to the corresponding interface according to the calculated real-time split weight.

(2) The real-time offload weight calculated according to the interface rate and the delay is used to assign the established link to the interface in the connected state.

The "established link" here includes two situations:

The first case: "established link" is the newly created link, that is, the newly established link for continuing to complete the transmission after being transmitted according to the initial routing rule.

In this case, the network state is changed in real time, and the connectivity state and rate of each interface are also changed in real time. Therefore, in the data service transmission process, the traffic weight is calculated according to the rate and delay of the interface; The calculated shunt weights are adjusted to adjust the number of links assigned to the interfaces in the connected state.

In this case, referring to FIG. 6, the data transmission method of the embodiment of the present invention specifically includes the following steps: S10: The terminal detects the connectivity of each interface in real time; S20, when the terminal detects that data needs to be transmitted, based on the initial split weight, The established multiple links are allocated to the interface in the connected state for data transmission; S30. In the process of data transmission, the real-time split weight is calculated, and the newly established link is allocated to the interface in the connected state according to the real-time split weight. data transmission.

It should be understood that, when data transmission is performed, the data service to be downloaded may be divided into a plurality of data blocks of the same size or different size to be respectively transmitted through the established multiple links. For example, a 10M Android packet (APK) can be divided into 10 data blocks, each of which has a size of 1M, and each data block is transmitted through a link.

In some embodiments, the maximum number of links that the terminal 100 can establish is not necessarily equal to the divided data blocks, for example, the data block is 10, and the maximum number of links established is 5. Then when the transfer of a link is completed, a new link can be created to continue to transfer the remaining data. Therefore, in the embodiment of the present invention, the number of links allocated to the interface in the connected state is specifically: the newly-added link is allocated to the interface in the connected state according to the calculated split weight.

During the data transmission process, the offload weights of the interfaces are calculated according to the rate and delay of the interface, so that the newly established links are allocated to the interfaces according to the calculated split weights to achieve an optimized allocation ratio. Since the rate of the interface reflects the bandwidth of the interface to a certain extent, the interface with a large bandwidth should carry more data streams, so that a large amount of data is not easily circulated from the interface with a small bandwidth. In this way, congestion of interfaces with small bandwidth is alleviated, data transmission delay is shortened, packet loss is reduced, interface utilization and data transmission rate are improved.

Specifically, the interface is measured for speed every first preset time (for example, 1 second), and the split weight is calculated according to the rate and delay corresponding to the interface every second preset time (for example, 5 seconds). In some embodiments, the split weights may also be calculated based only on the real-time rate of the interface without regard to latency, and the case of considering only the real-time rate will be described later.

In the embodiment of the present invention, the rate detection of the interface may be performed in the following manner:

The interval of the number of interface bytes is obtained as the current rate of the interface every preset time (for example, 1 second). Specifically, if the rate of an interface is detected for the first time, the number of detected bytes is saved. If the rate of an interface is not detected for the first time, the number of interface bytes obtained is subtracted from the number of interface bytes obtained before, and the obtained difference is divided by the time of two detections. Current rate.

In the embodiment of the present invention, the split weight can be calculated according to the rate and delay of the interface in the following manner:

Measure the speed of the interface and check whether the interface is in a congested state. If yes, determine whether the current real-time rate is smaller than the previous maximum rate (max_speed). If it is smaller, the current real-time rate is added with a preset value (for example, Whether it is less than the maximum rate (max_speed) after 100KB/s), if it is, it indicates that the network environment has undergone a large change, and the current real-time rate is assigned to the maximum rate (max_speed);

If the interface is not in a congested state, and the current real-time rate is greater than max_speed, the current real-time rate is assigned to the maximum rate (max_speed);

The maximum rate is compared with a preset value (for example, 50 kb/s). If the maximum rate is greater than the preset value, the split weight is calculated according to the rate of the interface; if the maximum rate is not greater than the preset value, the delay according to the interface is used. Determine the split weight.

In the embodiment of the present invention, the detection of whether the interface is in a congested state is obtained by detecting the delay of the interface. The delay detection method of the interface has the following two methods:

Manner 1: Send a set of ping packets through the interface every predetermined time (for example, 5 seconds) (for example, 5 packets per group, each of which is 64 Bytes), and obtain the interface according to the time difference of receiving the response. Delay.

Manner 2: Calculate the delay by TCP three-way handshake. Specifically: when receiving a synchronization sequence number and a acknowledgment number (syn+ack) message, determine whether it is in the SYN_SEND state, that is, waiting for a matching connection request after sending the connection request. Status, if it is, then obtain the current system time, and subtract the time of the current system time from the system to send the syn message to obtain a time difference. This time difference is the interface delay.

If the delay is greater than or equal to a predetermined value (eg, 1000 ms), the interface is marked as being in a congested state. If the delay is less than a preset value, it is detected whether the syn message of the link is retransmitted. If the retransmission is repeated, the interface is marked as being in a congested state, and the delay value is set to 1000 ms; if not retransmitted If the interface is not in a congested state, the calculated delay value is used as the delay of the interface.

In the embodiment of the present invention, when the split weight is calculated according to the rate of the interface, the calculation is performed according to the following formula:

The shunt weight of the i-th interface = the maximum rate of the i-th interface / (the maximum rate of the first interface + the maximum rate of the second interface + ... + the maximum rate of the i-th interface + ...)

It should be understood that the foregoing method for calculating the split weight according to the interface rate may adopt other manners, for example, pre-setting the relationship between the rate range and the split weight. When the rate is in the first range, the split weight is 20%, and in the second range. , the weight of the shunt is 80% and so on.

When the weight of the traffic is calculated according to the delay, the delay is inversely proportional to the weight of the traffic. For example, if the delay of the first interface is D1 and the delay of the second interface is D2, the traffic weight of the first interface is D2/(D1+). D2), the weight of the second interface is D1/(D1+D2).

It should be understood that the relationship between the delay and the split weight may be set in other manners. For example, when the preset delay exceeds a certain value, the split weight is set to 0 or the like.

In one embodiment, if a preset abnormality occurs, the shunt weight is set to 1:1, that is, the shunt is performed by a weight of 1:1 by default. For example, the preset abnormal conditions include, but are not limited to, when the maximum rate is not greater than the preset value, and the time delay of the interface is not detected.

In the embodiment of the present invention, after the split weight is adjusted by calculation, the newly established link in the data transmission process can be allocated to each interface according to the real-time split weight to perform data service transmission. Therefore, in the embodiment of the present invention, a current routing rule can be established according to the real-time offload weight. Current road The difference between the rule and the initial routing rule is that the current routing rule is based on the calculated real-time offload weight, and the established link is assigned to each of the connected state interfaces. For example, if there are three connected interfaces, the number of links established is nine, and the calculated real-time split weight is 3:4:2, the number of links allocated to the first interface for transmission is adjusted to three, and the number is allocated to The number of links for transmission on the second interface is adjusted to four, and the number of links allocated for transmission to the third interface is adjusted to two.

In order to ensure that the established link is transmitted through the corresponding interface according to the split weight (the initial split weight and the real-time split weight), in the embodiment of the present invention, the linked data packet may be marked by means of marking the link data packet. Thus, at the time of transmission, different links can be transmitted along the corresponding interface according to the tag value of the data packet.

Referring to Table 1, an embodiment of a routing rule formed by marking a data packet according to a split weight.

链接link	Mark值Mark value	接口interface
11	0X010X01	第一接口(例如，WIFI接口)First interface (for example, WIFI interface)
22	0X020X02	第二接口(例如，第一LTE接口)Second interface (eg, first LTE interface)
33	0X030X03	第三接口(例如，第二LTE接口)Third interface (eg, second LTE interface)
……......	……......	……......

Table 1

The Mark value in Table 1 is the tag value of the packet in each link. In the embodiment of the present invention, the first data packet of each link is marked, and the subsequent data packets are transmitted according to the interface of the first data packet.

Referring to FIG. 7, when marking is performed, the data packet is first acquired, and it is determined whether the link tracking state of the data packet is a preset state. Here, the preset state is the NEW state, that is, whether it is the first data packet of a certain link;

If it is the default state (that is, the first packet), the packet is marked according to the interface to which the link is assigned, and the tag value is saved. Specifically, it may be saved in the corresponding link tracking mark; if it is not the preset state (ie, not the first data packet), the saved tag value of the first data packet of the link is given to the data packet, and according to the data The tag value of the packet, which is assigned to the corresponding interface for transmission.

Therefore, the data packet tag value in the embodiment of the present invention has a double meaning. First, the link to which the data packet belongs can be determined, and second, it can be determined which interface the data packet should go to.

In the embodiment of the present invention, a link that has been assigned to the corresponding interface is transmitted through the interface until completion. However, if the interface in the connected state becomes unconnected during the transmission, the link transmitted through the interface is aborted, and the data transmission of the link is continued by creating a new link. For example, if the data size of a link needs to be transmitted is 1M, when the corresponding transmission interface is abnormally interrupted when it is transmitted to 0.5M, the change will be reflected in the current routing rule, and the weight of the offload will change. In this way, after the new link is created, the newly created link will be assigned to the corresponding interface according to the current routing rule to continue the transmission of the remaining 0.5M data.

In the embodiment of the present invention, after all data services are transmitted, the interface is closed and the current routing rule is deleted. For some needs, you can also not delete routing rules. For example, saved routing rules can be used for the next data transmission.

In this case, the initially established links are allocated according to the 1:1 split weight, and the newly established connections are allocated based on the calculated split weights, so that the allocation efficiency can be improved, and the interface utilization rate and the transmission rate can be improved.

The second case: "established link" is a link established at the beginning, that is, when a data service is detected, the initially established link is transmitted to the corresponding interface according to the calculated split weight.

In this case, the offload weight is based on the real-time offload weight calculated based on the rate and delay of the interface during the last data transmission. In an embodiment of the invention, this is referred to as a pre-stored split weight. Specifically, if the network environment in which the terminal is located does not change greatly, for example, if the location of the terminal does not change, and the interval between two data transmissions is less than 10 s, when a new data transmission is performed, the upper data may be used. The weight of the split for one data transfer. Whether the location of the terminal changes or not can be obtained by a module such as GPS in the terminal. The interval between two data transmissions can be obtained by a module such as a timer.

In this case, the data transmission method of the embodiment of the present invention specifically includes: the terminal detects the connectivity of each interface in real time; when the terminal detects that there is data to be transmitted, the terminal allocates the established multiple links to be connected based on the pre-stored split weight. The interface of the state is used for data transmission; in the transmission process of the data service, the weight of the offload is calculated according to the rate and delay of the interface, or the rate is calculated according to the rate of the interface. The flow weight is based on the calculated real-time split weight, and the newly-added link is allocated to the interface in the connected state according to the real-time split weight for data transmission.

It should be understood that the pre-stored offload weight is “the split weight of the last data transmission”, which is specifically the split weight of the most recent data transmission of the current data transmission. In this embodiment, the shunt weights are calculated at the time of the last data transmission and the corresponding routing rules are saved for use.

In this case, the initially established link is transmitted according to the saved split weight and routing rule. In the data transmission process, as described in the first case, each is calculated according to the rate and delay of the interface. The offload weight of the interface, and based on the calculated offload weight, adjust the number of links allocated to each interface. This process has been described in detail in the first case above, and will not be described again here.

In this case, the initially established links are not allocated according to the 1:1 split weight, but based on the saved split weights and routing rules, which can optimize the allocation of links and improve interface utilization and transmission rate.

It should be understood that all the foregoing descriptions are based on the terminal acquiring resources (for example, downloading an application) from the receiving device. If the terminal uploads the resource to the receiving device, the data transmission method is similar to the foregoing, except that After the link is established, the process of data transmission is to send data from each corresponding interface to the receiving device through the established link.

When the data transmission is completed, the terminal or the receiving device synthesizes the data received through each link to obtain a complete data resource.

The data transmission method according to the embodiment of the present invention performs offloading based on the interface rate and the delay, thereby realizing the simultaneous transmission of data by using multiple data channels, and greatly optimizing the distribution ratio of the data stream; since the rate reflects the interface to a certain extent The size of the bandwidth, the interface with a large bandwidth should carry more data streams, so that a large amount of data is not easily circulated from the interface with a small bandwidth, causing congestion of the interface with small bandwidth, resulting in large delay and packet loss. User verification.

Example 2

The difference between Embodiment 2 of the present invention and the above embodiment is that when calculating the offload weight in Embodiment 2, only the rate of the interface is used, regardless of the delay. The data transmission method of the embodiment of the present invention includes:

Step S21: The terminal detects the connectivity of each interface in real time.

In an embodiment of the invention, the interface includes, but is not limited to, a WIFI interface, an LTE interface, a 3G interface, and the like. The number of interfaces may be multiple, and the types of interfaces may be multiple. For example, the interface may include two LTE interfaces and two WIFI interfaces.

A ping message is sent from each interface every first preset time (for example, 10 seconds). The destination IP address of the ping is the address of a fixed DNS server, for example, 114.114.114.114.

It should be understood that the connectivity of the interface is only described by way of example, and is not used in the protection scope of the embodiment of the present invention. The connectivity of the interface may also be performed in other manners, for example, by sending an empty data packet.

Step S22: When the terminal detects that there is a data service, multiple links are established.

S23. The terminal allocates the established link to the interface in the connected state to perform data service transmission with the receiving device according to the split weight.

In the embodiment of the present invention, the offload weight includes an initial split weight of 1:1 and a real-time split weight calculated according to the interface rate. The following two cases are described separately:

In the embodiment of the present invention, when data is transmitted, data is first transmitted according to an initial routing rule. The connection request packets to be generated are distributed to each interface for transmission. The receiving device receives the connection request message and replies with an acknowledgement message for each connection request message. The acknowledgement message is respectively replied to the terminal via the corresponding interface. The terminal receives the acknowledgment message through each interface and sends an acknowledgment message to establish multiple TCP links between the terminal and the receiving device for transmitting data.

It should be understood that, in the embodiment of the present invention, after the link is established between the terminal and the receiving device, data transmission can be performed, and when the link completes its data transmission task, it is released. Thus, in the embodiment of the present invention, the link established at the beginning of the transmission is allocated according to the initial routing rule. If the establishment of these links has completed the transfer of all resources, there is no need to create a new link to continue the transfer, otherwise a new link will be created for the transfer of resources until all resource transfers are completed. The newly created link will be assigned to the corresponding interface based on the calculated shunt weights as follows.

(2) The real-time offload weight calculated according to the interface rate is used to assign the established link to the interface in the connected state.

The "established link" here includes two situations:

In this case, since the network environment changes in real time, the connectivity status and rate of each interface also change in real time. Therefore, in the transmission process of the data service, the split weight is calculated according to the rate of the interface; and based on the calculated Divert the weights and adjust the interfaces assigned to each connected state. The number of links.

In this case, the data transmission method of the embodiment of the present invention specifically includes the following steps: the terminal detects the connectivity of each interface in real time; when the terminal detects that there is data to be transmitted, the terminal allocates multiple links to be established based on the initial split weight. The interface of the connected state is used for data transmission; in the process of data transmission, the real-time split weight is calculated, and the newly established link is allocated to the interface in the connected state according to the real-time split weight for data transmission.

It should be understood that, when data transmission is performed, the data service to be downloaded may be divided into a plurality of data blocks of the same size or different size to be respectively transmitted through the established multiple links. For example, a 10M-sized APK can be divided into 10 data blocks, each of which has a size of 1M, and each data block is transmitted through a link.

During the data transmission process, the split weights of the interfaces are calculated according to the rate of the interface, so that the newly established links are allocated to the interfaces according to the calculated split weights to achieve an optimized allocation ratio. Since the interface rate reflects the bandwidth of the interface to a certain extent, the interface with large bandwidth should carry more data streams, so that a large amount of data is not easily circulated from the interface with small bandwidth, thus alleviating the interface with small bandwidth. Congestion shortens the data transmission delay, reduces the packet loss, and improves the interface utilization and data transmission rate.

Specifically, the interface is measured for speed every first preset time (for example, 1 second), and the split weight is calculated according to the rate corresponding to the interface every second preset time (for example, 5 seconds).

In the embodiment of the present invention, the calculation of the split weight according to the rate of the interface may be as follows:

If the interface is not in a congested state and the current real-time rate is greater than max_speed, the current real-time rate is assigned to the maximum rate (max_speed).

Manner 1: Send a set of ping packets through the interface every predetermined time (for example, 5 seconds) (for example, 5 packets per group, each of which is 64 Bytes), and obtain the delay of the interface according to the time difference of receiving the response. .

Manner 2: Calculate the delay by TCP three-way handshake. Specifically: when receiving a syn+ack packet, determine whether it is in the SYN_SEND state. If it is, obtain the current system time and subtract the current system time obtained. The time when the system sends the syn message to obtain a time difference. This time difference is the interface delay.

It should be understood that the foregoing method for calculating the split weight according to the interface rate may also adopt other manners, for example, pre-setting the relationship between the rate range and the split weight. When the rate is in the first range, the split weight is 20%, while in the second range, the shunt weight is 80% and so on.

In the embodiment of the present invention, after the split weight is adjusted by calculation, the newly established link in the data transmission process can be allocated to each interface according to the new real-time split weight for data service transmission. Therefore, in the embodiment of the present invention, a current routing rule can be established according to the real-time offload weight. The difference between the current routing rule and the initial routing rule is that the current routing rule is based on the calculated diversion weight, and the established link is assigned to each of the connected state interfaces. For example, if there are three connected interfaces, the number of established links is 9, and the calculated split weight is 3:4:2, the number of links allocated to the first interface for transmission is adjusted to three, and is assigned to the second. The number of links transmitted by the interface is adjusted to four, and the number of links allocated to the third interface for transmission is adjusted to two.

In the embodiment of the present invention, the first data packet of each link is marked, and the subsequent data packets are transmitted according to the interface of the first data packet.

In the embodiment of the present invention, a link that has been assigned to the corresponding interface is transmitted through the interface until completion. However, if the interface in the connected state becomes disconnected during the transmission, the link transmitted through the interface is aborted, and the link is continued by creating a new link. data transmission. Specifically, for example, the size of the data to be transmitted by a certain link is 1M. When the transmission to the 0.5M size, the corresponding transmission interface is abnormally interrupted, and the change will be reflected in the current routing rule, and the weight of the offload will change. In this way, after the new link is created, the newly created link will be assigned to the corresponding interface according to the current routing rule to continue the transmission of the remaining 0.5M data.

In the embodiment of the present invention, after all the data services are transmitted, the interface is closed, and the current routing rule is deleted. For some needs, you can also not delete routing rules. For example, saved routing rules can be used for the next data transmission.

In this case, the initially established links are allocated according to the 1:1 split weight, and the newly established connections are allocated based on the calculated split weights, which can improve the allocation efficiency, improve the interface utilization rate and the transmission rate.

In this case, the offload weight is calculated based on the rate of the interface at the time of the last data transmission. Specifically, if the network environment in which the terminal is located does not change greatly, for example, when the location of the terminal does not change, and the interval between two data transmissions is less than 10 S, when a new data transmission is performed, the upper data may be used. The weight of the split for one data transfer. Whether the location of the terminal changes or not can be obtained by a module such as GPS in the terminal. The interval between two data transmissions can be obtained by a module such as a timer.

In this case, the data transmission method of the embodiment of the present invention specifically includes: the terminal detects the connectivity of each interface in real time; when the terminal detects that there is data to be transmitted, the terminal allocates the established multiple links to be connected based on the pre-stored split weight. The status interface is used for data transmission; in the data service transmission process, the traffic weight is calculated according to the rate and delay of the interface, or the traffic weight is calculated according to the rate of the interface; and based on the calculated real-time traffic weight, the newly created link is The real-time offloading weight is assigned to the interface in the connected state for data transmission.

In this case, the initially established link is transmitted according to the saved routing rule. In the data transmission process, as described in the first case, the offload weight of each interface is calculated according to the rate of the interface, and based on The calculated shunt weights are adjusted to adjust the number of links assigned to each interface. This process has been described in detail in the first case above, and will not be described again here.

In this case, the initially established link is not allocated according to the 1:1 split weight, but based on the saved split weight and routing rules, which can optimize the link allocation and improve the interface utilization and transmission rate.

The data transmission method of the embodiment of the invention, based on the interface rate splitting, realizes the simultaneous transmission of data by using multiple data channels, and greatly optimizes the distribution ratio of the data stream; since the rate reflects the interface bandwidth to a certain extent, An interface with a large bandwidth should carry more data streams, so that a large amount of data is not easily circulated from an interface with a small bandwidth, causing congestion of an interface with a small bandwidth, resulting in a large delay, a packet loss condition, and an improved user authentication.

The embodiment of the invention further discloses a computer readable storage medium storing computer executable instructions for performing one or a combination of the above two data transmission methods.

Example 3

FIG. 8 is a schematic structural diagram of a user equipment with dual L functions according to an embodiment of the present invention. As shown in FIG. 8, the method includes: a first user identification module 206, a second user identification module 306, and a first communication module 801. The second communication module 802, the switching module 803, the control module 804, the application processing module 202, the microphone 500, the codec 204, the digital signal processing chip 203, and the earpiece 600.

The first communication module 801 includes: a first protocol stack 201 and a first radio frequency 205. The second communication module 802 includes a second protocol stack 301 and a second radio frequency 305.

The application processing module 202 is configured to provide a user interaction interface and refer to the user's operation The transmission is transmitted to the control module 804.

The control module 804 is configured to output the first control instruction and the second control instruction according to an operation instruction of the user.

The control module 804 is further configured to control the switching module 803 according to the first control instruction such that the first user identification module 206 or the second user identification module 306 is connected to the first communication module 801.

The first communication module 801 is configured to establish a data service connection with the 4G network for data service transmission, and for establishing a call connection through the 4G network for voice transmission.

The control module 804 is further configured to control the switching module 803 according to the second control instruction such that the first user identification module 206 or the second user identification module 306 is connected to the second communication module 802.

The second communication module 802 is configured to establish a data service connection with the 4G network for data service transmission.

When performing voice transmission, the microphone 500 is configured to collect a voice signal; the codec 204 is configured to perform analog-to-digital conversion on the voice signal collected by the microphone; and the digital signal processing chip 203 is set to be code-decoded by the codec. The signal is audio processed and transmitted to the first protocol stack 201; the first radio frequency 202 is arranged to transmit the signal processed by the first protocol stack 201 to the 4G network. The first radio frequency 202 is further configured to receive a voice signal from the 4G network and transmit the signal to the first protocol stack 201. The digital signal processing chip 203 is configured to perform audio processing on the signal processed by the first protocol stack 201 and transmit the code to the codec. The codec 204 is arranged to perform analog-to-digital conversion on the signal from the digital signal processing chip; the earpiece 600 is arranged to output the voice signal processed by the codec 204.

In one embodiment, the first protocol stack 201 is an LTE protocol stack, the 4G network is an LTE network, the second protocol stack 301 is an LTE protocol stack, and the 4G network is an LTE network.

Therefore, the user equipment of this embodiment can support dual LTE for data transmission. For the specific implementation principle and details, refer to the prior application with the application number 201510827714.4. It should be understood that the dual LTE technology of this embodiment is only an exemplary one, and other technologies may also be used to implement dual LTE functions.

In the embodiment of the present invention, the control module 804 is further configured to detect connectivity of the first communication module 801 and the second communication module 802, establish a routing rule, and when a data service is detected, establish multiple links, and the calculation is in communication. The split weight of the communication module of the state; according to the split weight, it will be built The established link is assigned to the communication module in the connected state for the transmission of the data service.

It should be understood that, in practice, since 4G LTE is backward compatible with 3G and 2G, the user equipment of the embodiment of the present invention is compatible with 3G and 2G. On the other hand, the user equipment may further include at least one WIFI module (not shown) connected to the control module 804 for connecting to the WIFI network for data transmission. Thus, the available data transmission interface of the user equipment of this embodiment includes a first LTE interface, a second LTE interface, and a WIFI interface. The first LTE interface corresponds to the first communication module, the second LTE interface corresponds to the second communication module, and the WIFI interface corresponds to the WIFI module. When the network switching occurs, the first LTE interface and the second LTE interface may also be replaced by the first 3G interface and the second 3G interface, respectively, or the first LTE interface and the second LTE interface may be respectively configured by the first 2G interface and the second 2G interface replacement. It should be understood that, in the user equipment of the embodiment of the present invention, the WIFI module may be one or more. The interface of the embodiment of the present invention may include: a first LTE interface, a second LTE interface, a first WIFI interface, and a Two WIFI interfaces.

The control module 804 of the embodiment of the present invention is further configured to detect connectivity of each interface in real time based on the first LTE interface, the second LTE interface, the first WIFI interface, and the second WIFI interface; and when multiple data services are detected, multiple entries are established. Link; according to the split weight, the established link is assigned to the interface in the connected state for data service transmission.

The working principle of the user equipment in the embodiment of the present invention is: opening each interface and performing link connectivity detection in real time; if network switching occurs, re-setting the corresponding interface information. In this step, you can choose to set the state of some interfaces to off. For example, because the 2G transmission rate is slow, you can set its corresponding interface to off. When the status of the interface is detected as connected, the interface is added to the list of available interfaces; if it is not connected, the interface is removed from the list of available interfaces or is not added to the list of available interfaces.

In this step, real-time detection of link connectivity may be performed by sending a ping message from each interface every 10 seconds, and pinging the destination IP address 114.114.114.114. This address is the address of a fixed DNS server. The maximum length of the ping message is 10 seconds. If the interface does not receive a response, the interface is considered to be in the down state and the interface is not down. If the reply is received within 10 seconds, if the interface is in the down state and the interface status is up, the interface can be offloaded.

When the user equipment detects that there is a data service that needs to be transmitted, a plurality of links are established. Specifically, the The process can be implemented according to the step S2 in the above-mentioned embodiment 1 or the step S22 in the above-mentioned embodiment 2. The implementation details can be referred to the above description, and details are not described herein again.

The established link is assigned to the interface in the connected state according to the split weight to perform data service transmission with another user equipment (for example, a server or the like). Specifically, the process may be implemented according to the step S3 in the foregoing Embodiment 1 or the step S23 in the foregoing Embodiment 2. The implementation details may be referred to the foregoing, and details are not described herein again.

The user equipment in the embodiment of the present invention has dual L functions, and is based on interface rate offloading, which greatly optimizes the proportion of data stream allocation, realizes simultaneous data transmission by using multiple data channels, and reduces delay, packet loss rate, and congestion. Rate, etc., improve the user experience.

The user equipment of the embodiments of the present invention may be implemented in various forms. For example, the user equipment described in the present invention may include, for example, a mobile phone, a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (Personal Digital Assistant), a PAD (Tablet), a PMP (Portable Multimedia Player), navigation A mobile terminal of a device or the like.

Correspondingly, the embodiment of the present invention further provides a data transmission apparatus, which is applicable to a terminal having multiple wireless data transmission interfaces, and the data transmission apparatus includes:

The detection module is configured to detect the connectivity of each interface in real time;

The initial shunt module is configured to, when detecting that there is data to be transmitted, allocate the established multiple links to the interface in the connected state for data transmission based on the initial shunt weight;

The real-time shunt module is configured to calculate a real-time shunt weight in the process of data transmission, and allocate the newly established link to the interface in the connected state according to the real-time shunt weight for data transmission.

It should be understood that the implementation details and principles of the foregoing embodiments are applicable to the data transmission apparatus of this embodiment, and details are not described herein again.

The offload transmission module is configured to, when detecting that data needs to be transmitted, allocate the established multiple links to the interface in the connected state for data transmission based on the pre-stored offload weights.

Any process or method description in the flowcharts or otherwise described in the embodiments of the invention may be understood to represent code that includes one or more executable instructions for implementing the steps of a particular logical function or process. Modules, segments or portions, and the scope of the embodiments of the invention includes additional implementations, in which the functions may be performed in a substantially simultaneous manner or in an inverse order depending on the functions involved, in the order shown or discussed. This should be understood by those skilled in the art of the embodiments of the present invention. Further, in the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specified.

The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative and not restrictive, and those skilled in the art In the light of the present invention, many forms may be made without departing from the spirit and scope of the invention as claimed.

Industrial applicability

The data transmission method, device and user equipment provided by the embodiments of the present invention allocate links for each interface based on the traffic weights, thereby realizing the simultaneous transmission of data by using multiple data channels, greatly optimizing the distribution ratio of the data streams, and reducing the congestion of the interfaces. , delay and packet loss rate, improve user authentication.

Claims

A data transmission method suitable for a terminal having multiple wireless data transmission interfaces, including:

The terminal detects the connectivity of each wireless data transmission interface in real time;

When detecting that there is data to be transmitted, the terminal allocates the established multiple links to the wireless data transmission interface in the connected state for data transmission based on the initial split weight;

In the process of data transmission, the real-time shunt weight is calculated, and the newly established link is allocated to the wireless data transmission interface in the connected state according to the real-time shunt weight for data transmission.
The data transmission method according to claim 1, wherein when the terminal detects that there is data to be transmitted, the established plurality of links are allocated to the interface in the connected state for data transmission based on the initial split weight, including:

When the terminal detects that there is data to be transmitted, the multiple connection request messages are evenly distributed to the wireless data transmission interface in the connected state for transmission;

Receiving, by the respective wireless data transmission interfaces of the terminal, an acknowledgement message replied by the receiving device, to establish a plurality of links for transmitting data between the terminal and the receiving device.
The data transmission method according to claim 1, wherein in the process of data transmission, the real-time offload weight is calculated, and the newly established link is allocated to the interface in the connected state for data transmission according to the real-time offload weight, including :

The split weight is calculated according to the rate and the delay of the wireless data transmission interface, or the split weight is calculated according to the rate of the wireless data transmission interface;

Based on the calculated real-time offload weight, the newly created link is allocated according to the real-time split weight to the wireless data transmission interface in the connected state for data transmission.
The data transmission method according to claim 1, further comprising:

If the wireless data transmission interface in the connected state becomes disconnected during the transmission of the data, the link transmitted through the wireless data transmission interface is suspended;

And continuing the data transmission of the link by means of the new link.
The data transmission method according to claim 1, further comprising detecting said wireless The status of the data transfer interface, including:

Sending a ping message from each wireless data transmission interface to the preset server every first preset time;

Waiting for the second preset time, if the reply message is not received, the wireless data transmission interface is in a disconnected state, and if the reply message is received, the wireless data transmission interface is in a connected state.
The data transmission method according to claim 1, further comprising: obtaining a change in the number of bytes of the wireless data transmission interface as a current rate of the wireless data transmission interface every preset time.
The data transmission method according to claim 6, further comprising:

Before the real-time offloading weight is calculated, detecting whether the wireless data transmission interface is in a congested state, and if yes, determining whether the current rate of the wireless data transmission interface is greater than a maximum rate of the interface, and if not greater than the maximum rate, the current The rate is compared with the maximum rate after adding a preset value, and if it is less than the maximum rate, the current rate is used as the maximum rate of the wireless data transmission interface;

If the wireless data transmission interface is not in a congested state and the current rate is greater than the maximum rate, the current rate is used as the maximum rate of the wireless data transmission interface.
The data transmission method according to claim 7, wherein said calculating a real-time offload weight comprises:

Comparing the maximum rate with a preset value, if the maximum rate is greater than a preset value, calculating a split weight according to a maximum rate of the wireless data transmission interface; if the maximum rate is not greater than a preset value, according to the The delay of the wireless data transmission interface determines the split weight.
The data transmission method according to claim 7 or 8, wherein the offload weight of any of the wireless data transmission interfaces is a ratio of a maximum rate of the wireless data transmission interface to a sum of maximum rates of all interfaces.
The data transmission method according to claim 8, wherein when a syn+ack message is received through a wireless data transmission interface, it is judged whether it is in the SYN_SEND state, and if it is in the SYN_SEND state, the current system time is obtained. The current system time obtained is subtracted from the time when the system sends a syn message, and the obtained time difference is the delay of the wireless data transmission interface.
The data transmission method according to claim 8, the method further comprising:

A set of ping messages is sent through each of the wireless data transmission interfaces at a preset time, and the time delay of the wireless data transmission interface is obtained according to the time difference of receiving the reply information.
The data transmission method according to claim 10 or 11, wherein the delay of the wireless data transmission interface is inversely proportional to the weight of the traffic of the wireless data transmission interface.
The data transmission method according to claim 1, further comprising:

Obtaining each of the linked data packets, and determining whether the link tracking status of the obtained data packet is the first data packet;

If it is the first data packet, the data packet is marked according to the traffic weight, and the tag value is saved; if it is not the first data packet, the tag of the first data packet of the link is saved. The value is assigned to the data packet;

The method further includes allocating the data packet to the corresponding wireless data transmission interface for transmission according to the tag value of the data packet.
The data transmission method according to claim 1, wherein the plurality of wireless data transmission interfaces comprise at least one of the following interfaces: a first long term evolution LTE interface, a second LTE interface, and a first wireless local area network WIFI interface. And the second WIFI interface.
A data transmission method suitable for a terminal having multiple wireless data transmission interfaces, including:

The terminal detects the connectivity of each wireless data transmission interface in real time;

When the terminal detects that there is data to be transmitted, the established multiple links are allocated to the wireless data transmission interface in the connected state for data transmission based on the pre-stored offload weights.
The data transmission method according to claim 15, wherein the pre-stored offload weight is a real-time offload weight used by the terminal for the last data transmission.
The data transmission method according to claim 15, the method further comprising:

During the transmission of the data service, the offload weight is calculated according to the rate and delay of the wireless data transmission interface, or the split weight is calculated according to the rate of the wireless data transmission interface;

And based on the calculated real-time split weight, the newly-added link is allocated according to the real-time split weight to the wireless data transmission interface in the connected state for data transmission.
A user equipment, including a first user identification module and a second user identification module, further comprising:

First communication module;

a second communication module;

Switching module; and

The control module is configured to output the first control instruction and the second control instruction according to the operation instruction of the user;

The control module is further configured to control the switching module according to the first control instruction, so that the first user identification module or the second user identification module is connected to the first communication module;

The first communication module is configured to establish a data service connection with the LTE network for data service transmission;

The control module is further configured to control the switching module according to the second control instruction, so that the first user identification module or the second user identification module is connected to the second communication module;

The second communication module is configured to establish a data service connection with the LTE network for data service transmission;

The control module is further configured to detect connectivity of the first communication module and the second communication module; when detecting that data needs to be transmitted, assign the established multiple links to the communication module in the connected state based on the initial split weight Data transmission; in the process of data transmission, the real-time shunt weight is calculated, and the newly established link is allocated to the communication module in the connected state according to the real-time shunt weight for data transmission.
The user equipment of claim 18, the user equipment further comprising:

Two WIFI modules, configured to connect to a WIFI network for data transmission;

The control module is further configured to detect connectivity of each interface in real time; when detecting that data needs to be transmitted, the established multiple links are allocated to the wireless data transmission interface in the connected state for data transmission based on the initial split weight; In the process of data transmission, the real-time shunt weight is calculated, and the newly established link is allocated to the wireless data transmission in the connected state according to the real-time shunt weight. Port for data transmission;

The wireless data transmission interface includes: a first LTE interface corresponding to the first communication module, a second LTE interface corresponding to the second communication module, and a corresponding to the two WIFI modules respectively A WIFI interface and a second WIFI interface.
A computer readable storage medium storing computer executable instructions for performing the method of any of claims 1-14 and/or any of claims 15-17.