CN103188753B - Carry out method and the device of transfer of data based on different links between heterogeneous network - Google Patents

Abstract

The invention discloses a method, device and system for data transmission based on different links between heterogeneous networks, comprising: receiving a message sent by a terminal to the network side based on a virtual network card address; Among the corresponding communication network links, select a communication network link, wherein the communication network links corresponding to at least two network cards inserted are different links between heterogeneous networks; The virtual network card address is the network card address of the network card corresponding to the selected communication network link; and the message after converting the source address is sent to the network side through the selected communication network link. By using the technical solution provided by the invention, the efficiency of link switching between different communication networks among heterogeneous networks can be better improved.

Description

Method and device for data transmission based on different links between heterogeneous networks

technical field

The present invention relates to the technical field of network communication, in particular to a method, device and system for data transmission based on different links between heterogeneous networks.

Background technique

With the rapid development of mobile communication technology and computer network technology, many widely used wireless communication technologies have been very mature, such as Time Division Code Division Multiple Access (TD-SCDMA, Time Division-Synchronous Code Division Multiple Access), Wideband Code Division Multiple Access (WCDMA, Wide- BandCodeDivisionMultipleAccess), Wireless Local Area Network (WLAN, WirelessLocalAreaNetwork), Microwave Access Global Access (WiMAX, Worldwide Interoperability for MicrowaveAccess) and other communication technologies, coexistence of multiple communication technologies, so that users can freely choose one or more wireless broadband networks with different access methods for communication Serve. In order to obtain higher network quality and use various wireless network services more flexibly, a heterogeneous network switching technology that facilitates users to freely switch between multiple networks has been produced.

Heterogeneous network handover technology is mainly divided into two handover types: link layer handover and network layer handover. Among them, the link layer handover mainly solves the problem of ensuring the link connectivity when the terminal is handed over between base stations without changing the access route. The network layer switching is mainly realized by setting a virtual network card on the terminal side, specifically: for two different communication networks A and B sharing the same core network, when the terminal uses the communication network to transmit data, the corresponding Two different communication networks A and B, there are network link A and network link B, the virtual network card set on the terminal side will configure different virtual IP addresses for the two different communication network links, the user will use the configuration The virtual IP addresses corresponding to the different communication network links of different communication network links are used for data transmission. Assuming that the user is currently using network link A in network A for data transmission, when communication network switching is required, it is first necessary to obtain the virtual IP address configured by the virtual network card for network link B, and then select New network link and access point, etc., to switch the data currently transmitted in network link A to network link B. After the switch is successful, continue to transmit data to the target address in network link B.

In the prior art, based on the virtual network card set on the terminal side, the terminal performs network layer switching between heterogeneous networks. During the data transmission process, it is necessary to re-establish the IP address information corresponding to the obtained new network link. Communication network link, thus resulting in relatively low switching efficiency.

Contents of the invention

Embodiments of the present invention provide a method, device and system for data transmission based on different links between heterogeneous networks, so as to better improve the efficiency of link switching between different communication networks between heterogeneous networks.

The technical scheme that the embodiment of the present invention proposes is as follows:

A method for data transmission based on different links between heterogeneous networks, comprising: receiving a message sent by a terminal to the network side based on a virtual network card address; in the communication network links corresponding to at least two network cards inserted in the terminal, Selecting a communication network link, wherein the communication network links corresponding to at least two network cards inserted are different links between heterogeneous networks; converting the address of the virtual network card used as the source address in the message to the selected communication network The network card address of the network card corresponding to the link; and the message after the converted source address is sent to the network side through the selected communication network link.

A method for data transmission based on different links between heterogeneous networks, comprising: for each terminal in advance, maintaining the communication network links corresponding to at least two network cards inserted into the terminal as link queues, and The terminal ID of the terminal is configured as the ID of the link queue, and a unique queue address is assigned to the link queue; when a message sent by the terminal is subsequently received, the corresponding link queue is found according to the ID of the terminal sending the message. and convert the source address of the received message to the queue address of the found link queue; forward the message after the converted source address to the data gateway.

A method for data transmission based on different links between heterogeneous networks, including: receiving a message sent by a data gateway; using the destination address in the received message as information for searching for a link queue identifier, and Find the corresponding link queue in the link queues maintained by different terminals; select a communication network link in the found link queue; convert the destination address of the received message to the network card corresponding to the selected link The address of the network card; the message after the converted destination address is sent to the terminal side through the selected communication network link.

A device for data transmission based on different links between heterogeneous networks, including: a receiving unit, configured to receive a message sent by a terminal to the network side based on a virtual network card address; a link management unit, configured to insert at least Among the communication network links corresponding to the two network cards, one communication network link is selected, wherein the communication network links corresponding to at least two network cards inserted are different links between heterogeneous networks; the address conversion unit converts the receiving The virtual network card address as the source address in the message received by the unit is the network card address of the network card corresponding to the communication network link selected by the link management unit; the sending unit is used to convert the message after the source address by the address translation unit through The communication network link selected by the link management unit is sent to the network side.

A device for data transmission based on different links between heterogeneous networks, including: a link queue maintenance unit, used for each terminal in advance, respectively corresponding to the communication network links of at least two network cards inserted into the terminal Maintain as a link queue, configure the terminal identification of the terminal as the identification of the link queue, and assign a unique queue address for the link queue; the link queue search unit is used to receive the subsequent information sent by the terminal When sending a message, find the corresponding link queue maintained by the link queue maintenance unit according to the identification of the terminal sending the message; the address conversion unit is used to convert the source address of the received message into the link found by the link queue search unit The queue address of the queue; the sending unit is used to forward the message after the address translation unit converts the source address to the data gateway.

A device for data transmission based on different links between heterogeneous networks, including: a receiving unit for receiving messages sent by a data gateway; The destination address of the link queue is used as the identification of the link queue, and the corresponding link queue is found in the link queues maintained separately for different terminals in advance; the link selection unit is used for the link queue found in the link queue search unit Select a communication network link in the link; the address conversion unit is used to convert the destination address of the message received by the receiving unit into the network card address of the network card corresponding to the link selected by the link selection unit; the sending unit is used to convert the address conversion unit The message after converting the destination address is sent to the terminal side through the communication network link selected by the link selection unit.

Based on the above technical solution, in the uplink, the receiving terminal selects a communication network link among the heterogeneous communication network links corresponding to at least two network cards inserted in the terminal based on the message sent by the terminal to the network side based on the address of the virtual network card , and convert the source address in the message to the network card address corresponding to the selected communication network link, and send the converted message to the network side. After the network receives the message, it uses the terminal identification carried in the message to Find the corresponding link queue, convert the source address to the found link queue address, and forward the packet after the source address is converted to the data gateway. In the downlink, receive the message sent by the data gateway, find the corresponding terminal link queue according to the destination address carried in the message, select a communication network link in the found terminal link queue, and then send the received The destination address of the message is converted to the network card address corresponding to the selected communication network link, and the converted message is sent to the terminal side through the selected communication network link, and then forwarded to the terminal via the virtual network card, so that Messages transmitted over a heterogeneous network can make use of coexisting heterogeneous network resources to realize seamless switching between communication links in heterogeneous networks, which improves the efficiency of switching between different communication network links in heterogeneous networks. Efficiency, and avoid the problems of network packet loss and data delay during the switching process.

Description of drawings

FIG. 1 is a system architecture diagram for data transmission based on different links between heterogeneous networks proposed in Embodiment 1 of the present invention;

2 is a flowchart of a method for data transmission based on different links between heterogeneous networks proposed in Embodiment 2 of the present invention;

FIG. 3 is a flowchart of a method for establishing a terminal link queue proposed in Embodiment 2 of the present invention;

FIG. 4 is a structural diagram of a device for data transmission based on different links between heterogeneous networks proposed in Embodiment 3 of the present invention;

FIG. 5 is a structural diagram of a device for data transmission based on different links between heterogeneous networks proposed in Embodiment 3 of the present invention;

FIG. 6 is a structural diagram of a device for data transmission based on different links between heterogeneous networks proposed in Embodiment 3 of the present invention;

FIG. 7 is a structural diagram of a device for data transmission based on different links between heterogeneous networks proposed in Embodiment 3 of the present invention.

detailed description

Based on the existing technology based on the virtual network card set on the terminal side to realize the network layer switching of the terminal between heterogeneous networks, in the process of data transmission, it is necessary to obtain the IP address information corresponding to the new network link, The communication network link is re-established, which leads to the problem of relatively low switching efficiency. The embodiment of the present invention proposes a technical solution for data transmission based on different links between heterogeneous networks. On the network side, all The network links between the heterogeneous networks corresponding to the inserted network cards respectively maintain a terminal link queue, and configure a queue address for the link queue. Select the corresponding communication network link, convert the source address of the message sent by the terminal to the network side to the network card address corresponding to the selected communication network link, and pass the message after the source address conversion through the selected communication network link Send to the network side, and the network side converts the source address of the received message into the terminal link queue address according to the unique terminal link queue maintained for the terminal, and forwards the message after the converted source address to the data gateway. In this way, the messages transmitted through the heterogeneous network can use the coexisting heterogeneous network resources to realize seamless switching between the communication links of the heterogeneous network, which improves the switching between the communication links of the heterogeneous network. Efficiency, and avoid the problems of network packet loss and data delay during the link switching process.

The main realization principles, specific implementation methods and corresponding beneficial effects of the technical solutions of the embodiments of the present invention will be described in detail below with reference to each accompanying drawing.

Embodiment one

As shown in Figure 1, it is a system architecture diagram for data transmission based on different links between heterogeneous networks proposed in Embodiment 1 of the present invention, including a terminal, a virtual network card, a link management device, a first communication network network card and Its corresponding access network, the second communication network network card and its corresponding access network, terminal link queue management equipment, and data gateway, wherein:

A terminal is a terminal that can be inserted into at least two network cards and can be connected to the corresponding network side through any network card, wherein at least two network cards can be communication network cards corresponding to different communication systems, for example, it can be a desktop computer equipped with a network card , laptops, mobile phones, etc.

A virtual network card is a virtual network card device set on a terminal device, and its form can be a program or an integrated chip. The virtual network card is configured with a device identifier and an IP address different from all physical network cards at the same time. In the uplink, the virtual network card is used to forward all the packets that the terminal needs to send to the network side. In the downlink, the virtual network card is used to forward packets received from the network side to the terminal.

The link management device, the link management device proposed here in Embodiment 1 of the present invention, is provided with terminal identification information corresponding to the terminal, and in the uplink, is used to receive the message sent by the terminal to the network side based on the address of the virtual network card, Among the communication network links corresponding to the at least two network cards inserted in the terminal, according to the current load conditions of different links, select a communication network link according to the load balancing principle, and the communication network links corresponding to the at least two network cards inserted in the terminal Roads are different links between heterogeneous networks. Convert the received virtual network card address in the message transmitted based on the virtual network card address as the source address to the network card address of the network card corresponding to the selected communication network link, and then send the message after the source address conversion through the selected communication network The link is sent to the network side. In the downlink, receive the message transmitted from the network side to the terminal through the network card inserted in the terminal, convert the destination address in the received message into a virtual network card address, and then convert the message with the converted destination address based on the virtual network card The address is forwarded to the terminal.

The first communication network card is a physical network card that can be plugged into the terminal, so that the terminal can access the access network corresponding to the first communication network card. Wherein, the network card of the first communication network may be, but not limited to, a TD-SCDMA network card, and its corresponding access network is a TD-SCDMA access network, and the access network is a network constituting a heterogeneous communication network.

The second communication network network card is also a physical network card, which can be inserted into the terminal, so that the terminal can access the access network corresponding to the second communication network network card. Wherein, the network card of the second communication network here may be, but not limited to, a WLAN network card, and its corresponding access network is a wireless local area network, and the access network is another network constituting a heterogeneous communication network.

It should be noted that the embodiment of the present invention only uses two different communication networks as examples to elaborate on the technical solution proposed by the present invention. In the specific implementation process, more physical network cards can also be added, that is, a Multiple different physical network cards can be inserted into the device at the same time, and it can ensure that the terminal can transmit messages through the communication network link corresponding to any network card inserted by itself.

The terminal link queue management device is used to identify and manage communication network links corresponding to different network cards inserted into the same terminal. In the uplink of data transmission, the terminal link queue management device is responsible for forwarding the message sent by the terminal to the network side, and in the downlink, responsible for forwarding the message that the terminal needs to receive from the network side.

Specifically, the terminal link queue management device maintains, for each terminal in advance, the communication network links corresponding to the at least two network cards inserted into the terminal as link queues, and configures the terminal identifier of the terminal as the link queue The ID of the queue, and assign a unique queue address to the link queue. In the uplink, when receiving a message from a terminal, find the corresponding link queue according to the identifier of the terminal that sent the message, and convert the source address of the received message to the address of the found link queue. Queue address; forward the message after converting the source address to the data gateway.

Wherein, the terminal link queue management device respectively receives the first link management message sent by the terminal through the communication network link corresponding to the at least two network cards inserted by itself, wherein the first link management message carries the terminal information of the terminal The identification and the information of the respectively passed network card may be, for example, the identification information corresponding to the network card or the MAC address information of the network card. The terminal identification carried in the first link management message is used as the identification assigned to the link queue maintained for the terminal, and the different link queues corresponding to the network card information carried in each first link management message received are respectively The path is maintained in the link queue maintained for the terminal. Wherein, after establishing a corresponding link queue for each terminal, if at a certain moment, when the communication network link corresponding to the network card inserted by the terminal changes, the second link management message sent , the link corresponding to the network card information carried in the received second link management message is maintained in the link queue corresponding to the terminal identifier carried in the second link management message, so as to achieve the maintenance of the terminal The purpose of updating the link queue.

Specifically, in the downlink, the terminal link queue management device is used to receive the message sent by the data gateway, use the destination address in the received message as the identifier of the link queue, and separately Find the corresponding link queue in the maintained link queue, and select a communication network link according to the load balancing principle according to the current load conditions of different links in the found link queue. Converting the destination address of the received message to the network card address of the network card corresponding to the selected link, and sending the message after the converted destination address to the terminal side through the selected communication network link.

The data gateway is the egress gateway for the communication between the mobile communication network and the Ethernet. It is used to forward all the messages transmitted from the terminal side to the Ethernet in the uplink. In the downlink, the forwarding terminal side needs to receive from the Ethernet. of all messages.

Wherein, when the above-mentioned link management device and terminal link queue management device select links from communication network links corresponding to different physical network cards inserted into the terminal, in addition to using the current load conditions of different links described above, In addition to selecting the communication network link according to the principle of load balancing, other methods can also be used, such as selecting the link with the best communication quality, the link with the highest bandwidth availability, etc. These selection methods are all within the rights of the present invention. within the scope of protection required.

Embodiment two

Furthermore, Embodiment 2 of the present invention is based on the system for data transmission based on different links between heterogeneous networks introduced in Embodiment 1 above. Taking two physical network cards of TD-SCDMA and WLAN inserted into the terminal as an example, the system based on The method for data transmission between different network links between heterogeneous networks is shown in Figure 2, and the specific process is as follows:

Based on the system architecture in the first embodiment above, in the uplink:

In step 201, the link management device receives the message sent by the terminal to the network side based on the address of the virtual network card. For example, based on the address of the virtual network card, the terminal sends an access request packet to the network side to access a certain web page.

Step 202, the link management device selects one or more communication network links respectively corresponding to the two network cards (TD-SCDMA network card and WLAN network card) inserted in the terminal to transmit messages. Wherein, the link management device may, but is not limited to, select a communication network link for the message to be transmitted according to the load balancing principle. Alternatively, according to the size of the received message to be transmitted, a communication network link is selected for the message to be transmitted in comprehensive consideration of the load of the communication network link.

Further, if the capacity of the message to be transmitted is relatively large, when the communication network link initially selected by the terminal management device for the message to be transmitted is used for transmission, after a period of time after transmission, if the selected When the load of the communication network link is relatively heavy and the message cannot be transmitted any more, the link management device can select another communication network link for the remaining messages, that is, switch the remaining messages to be transmitted to the selected link. Continue transmission on another communication network link. For example, if the capacity of the message sent by the terminal based on the address of the virtual network card is 50M, the communication network link selected for the message at the beginning is the communication network link corresponding to the TD-SCDMA network card. After the communication network link transmits the message for 20M, because the communication network link corresponding to the TD-SCDMA network card has a relatively heavy load, the link management device will switch the remaining 30M message to the communication network link corresponding to the WLAN network card. Continue to transmit on the way. In this way, it can be realized that when the communication network link needs to be switched during the message transmission process, the terminal does not need to re-acquire the address information corresponding to the communication network link to be switched to and re-establish the access route, and then retransmit the message. It can realize seamless switching on different transmission links between heterogeneous networks, and there will be no problems such as packet loss and network delay during the switching process.

Further, if the capacity of the message to be transmitted is relatively large, when using the communication network link initially selected by the terminal management device for the message to be transmitted for transmission, it may also be based on the capacity of the message, and Comprehensively consider the performance of the communication network links corresponding to the multiple network cards inserted into the terminal, split the message, and then select the appropriate communication network link for the split message, and then use the selected communication network The link transmits the message. For example, the capacity of the message received from the terminal based on the address of the virtual network card is 50M. At this time, there are two network cards on the terminal, TD-SCDMA network card and WLAN network card, and the communication network links corresponding to the two network cards are available. The message can be split according to the actual load of the communication network link corresponding to the two network cards, such as using the communication network link corresponding to the TD-SCDMA network card to transmit the 20M capacity of the message, and using the communication network link corresponding to the WLAN network card The remaining 30M capacity of the message is transmitted on the road. In this way, in the process of message transmission, the transmission efficiency of the communication network link corresponding to the network card inserted in the terminal can be better improved, network quality and user perception can be improved.

In step 203, the link management device converts the address of the virtual network card used as the source address in the message into the network card address of the network card corresponding to the selected communication network link. Wherein, the network card address may be, but not limited to, the MAC address of the network card. For example, suppose the MAC address of the TD-SCDMA network card is MAC1, the MAC address of the WLAN network card is MAC2, and the address of the virtual network card as the source address is MAC99. If the link management device selects the communication corresponding to the WLAN network card for the message to be transmitted network link, at this time, it is necessary to convert the virtual network card address MAC99 in the message to be transmitted into the address MAC2 corresponding to the WLAN network card.

Step 204, the message after the source address is converted is transmitted to the access network corresponding to the network card through the network card corresponding to the selected communication network link, and then transmitted to the core network through the access network, and then transmitted to the terminal link through the core network Road queue management equipment.

Step 205, when the terminal link queue management device receives the message sent by the terminal, it finds the link queue corresponding to the terminal identifier according to the terminal identifier carried in the sent message.

Among them, the terminal link queue management device will maintain the communication network links corresponding to at least two network cards inserted into the terminal respectively as a link queue for each terminal in advance, and configure the terminal identifier of the terminal as the link queue. The ID of the queue, and assign a unique queue address to the link queue. When the message is subsequently forwarded to the data gateway, the source address in the message uses the queue address of the link queue, that is, the message sent to the data gateway, no matter which communication network link is transmitted, A unique queue address is used at this time. And corresponding to each terminal, since each terminal maintains a unique terminal link queue, and each link queue has a unique queue address, it is equivalent to providing each terminal with A unique public network address information will not affect the user's use of Internet services.

Wherein, assigning a unique queue address for the link queue can be, but not limited to, a preset address information, or one of the network card information corresponding to the two network cards, for example, if the MAC addresses of the two network cards are MAC1 and MAC2 respectively, then, the queue address assigned to the link queue can be MAC1 or MAC2, or the preset MAC3. Preferably, Embodiment 2 of the present invention uses one of the communication network link corresponding The network card information of the link queue is used as the queue address of the link queue.

Specifically, in the initial state of the system, the link queue corresponding to each terminal does not exist, but when at least two network cards are inserted into the terminal, before the message is transmitted, the terminal link queue management device needs to pre-set the link queue for each terminal. A terminal establishes and maintains a link queue, as shown in Figure 3, the process of establishing and maintaining a link queue can be realized through the following steps:

Step 301, the terminal link queue management device respectively receives the first link management message sent by the terminal through the communication network links corresponding to at least two network cards inserted by itself, and the first link management message carries the terminal's The terminal identification and the information of the network card passed respectively.

Wherein, the first link management message carries unique identification information corresponding to the terminal, for example, but not limited to, terminal identifier information pre-set for each terminal, or the terminal's International Mobile Equipment Identity (IMEI , InternationalMobileEquipmentIdentityNumber) information, etc.

Step 302, the terminal link queue management device obtains the terminal identifier carried in the first link management message.

Step 303, the terminal link queue management device uses the obtained terminal identifier as the identifier assigned to the link queue maintained for the terminal, and uses the network card information corresponding to the received first link management messages to carry different The link is maintained into the link queue maintained for this terminal.

Subsequently, at a certain moment, if the communication network link corresponding to the network card inserted into the terminal itself changes, step 304 is also included:

Step 304, when the network card inserted by the terminal changes, for example, an inserted network card is added or decreased, the corresponding communication network link will also change. At this time, the terminal sends a second link management message, and the terminal chain The road queue management device maintains the link corresponding to the network card information carried in the received second link management message into the link queue corresponding to the terminal identifier carried in the second link management message.

Optionally, if a network card with a communication standard different from the existing inserted network card is added to the terminal, for example, a WCDMA network card is added, at this time, the terminal can send the second link management message in two ways :

The first way: sending the second link management message only through the communication network link corresponding to the newly added WCDMA network card.

The second manner: the second link management message may be sent through the communication network links corresponding to all the network cards inserted by itself.

Preferably, the second embodiment of the present invention adopts the first method here, and only sends the second link management message through the communication network link corresponding to the newly added network card, so that network transmission resources can be better saved.

Continuing the process shown in FIG. 2 above, in step 206, the terminal link queue management device converts the source address of the received message into the queue address of the found link queue. For example, if the received message is transmitted through the communication network link corresponding to the TD-SCDMA network card, the source address of the received message is the address of the TD-SCDMA network card, and the address of the TD-SCDMA network card is converted to the The queue address of the link queue maintained by the terminal.

Step 207, forward the message after the source address is converted to the data gateway, and send it to the Ethernet by the data gateway.

In the downlink:

Step 208, the terminal link queue management device receives the message sent by the data gateway. For example, it may be a response message to a terminal's request to access a certain webpage.

Step 209, extract the destination address carried by the message from the received message, and then use the extracted destination address as the identification information of the search link queue, and find the Corresponding link queue. Wherein, the destination address carried in the message can be but not limited to two forms, one is that the destination address is the link queue identifier corresponding to the link queue, and the other is that the corresponding link queue can be indexed according to the destination address The identifier of the link queue, so that the corresponding link queue can be found, for example, the destination address can be the queue address of the link queue. Preferably, the second embodiment of the present invention adopts the first method here, and the destination address carried in the message is the identification of the link queue, so that there is no need to perform index processing, which can better save system resources. Process resources.

Step 210, among the communication network links included in the searched link queue, select a communication network link according to the load balancing principle according to the current load conditions of the different links.

Wherein, the specific implementation manner of selecting one of the multiple communication network links according to the principle of load balancing has been described in detail in the above step 202, and will not be repeated here.

Step 211, the terminal link queue management device converts the destination address obtained from the received message into the address of the network card corresponding to the selected communication network link. For example, suppose the MAC address of the TD-SCDMA network card is MAC1, the MAC address of the WLAN network card is MAC2, and the destination address obtained from the received message is MAC3. If the terminal link queue management device selects is the communication network link corresponding to the WLAN network card, and at this time, the destination address MAC3 in the message to be transmitted needs to be converted into the address MAC2 corresponding to the WLAN network card.

Step 212: Send the message with the converted destination address to the corresponding network card inserted in the terminal side through the selected communication network link via the core network and the access network corresponding to the communication network link. That is, the message to be transmitted whose destination address has been converted into MAC2 is transmitted through the selected WLAN communication network link.

Step 213, when the network card inserted into the terminal receives the message from the network side, convert the destination address in the received message to the address of the virtual network card.

Specifically, when the WLAN network card inserted into the terminal receives a message transmitted through the communication network link corresponding to the network card, it obtains the destination address carried in the message, that is, MAC2, and converts the destination address MAC2 into a virtual network card Address MAC99.

Step 214, forward the packet after the destination address is converted to the terminal through the address of the virtual network card.

Using the method for data transmission based on different links between heterogeneous networks proposed here in Embodiment 2 of the present invention, the messages transmitted through heterogeneous networks can utilize coexisting heterogeneous network resources, and based on the principle of load balancing, automatically Multiplex the communication network links corresponding to a variety of different network cards to realize seamless switching between heterogeneous network links, avoiding the problems of network packet loss and data delay during the switching process, and better improving the quality of heterogeneous network links. The efficiency of road switching improves the efficiency of data transmission.

Embodiment three

Further, based on the steps 201 to 204 in the second embodiment of the above method, corresponding to the terminal side, the third embodiment of the present invention proposes a method in the uplink of message transmission (that is, the message is transmitted from the terminal side to the network side) ), a device for data transmission based on different links between heterogeneous networks, its structural composition is shown in Figure 4, including:

The receiving unit 401 is configured to receive a message sent by the terminal to the network side based on the address of the virtual network card.

The link management unit 402 is configured to select a communication network link among the communication network links corresponding to at least two network cards inserted in the terminal, wherein the communication network links corresponding to the at least two network cards inserted in the terminal are heterogeneous networks different links between.

Specifically, the link management unit 402 is specifically configured to, among the communication network links corresponding to the at least two network cards inserted in the terminal, select a communication network link according to the load balancing principle according to the current load conditions of different links.

The address conversion unit 403 converts the virtual network card address used as the source address in the packet received by the receiving unit 401 to the network card address of the network card corresponding to the communication network link selected by the link management unit 402 .

The sending unit 404 is configured to send the packet whose source address has been converted by the address converting unit 403 to the network side through the communication network link selected by the link management unit.

Correspondingly, based on the steps 213-214 in the second embodiment of the above method, corresponding to the terminal side, the third embodiment of the present invention here proposes a method in the downlink of message transmission (that is, the message is transmitted from the network side to the terminal side) , a device for data transmission based on different links between heterogeneous networks, its structural composition is shown in Figure 5, including:

The address conversion unit 501 is configured to convert the destination address in the received message into a virtual network card address when the network card inserted into the terminal receives a message from the network side.

The sending unit 502 is configured to forward the message whose destination address is converted by the address converting unit 501 to the terminal through the address of the virtual network card.

Correspondingly, corresponding to the terminal side, Embodiment 3 of the present invention also proposes a link management device here. The link management device may only have the processing capability of the downlink for packet transmission, or may only transmit packets according to the graph. The processing capability of the upper phase link, of course, the link management device on the terminal side can have the processing capability of the uplink and the downlink of message transmission at the same time, that is, including the processing capability of the message transmission mentioned above in the third embodiment of the present invention A device for performing data transmission based on different links between heterogeneous networks in the downlink and/or in the uplink of message transmission. Preferably, the link management device proposed here in the third embodiment of the present invention has both downlink and uplink processing capabilities for packet transmission.

Correspondingly, according to steps 205-207 in the second embodiment of the above method, corresponding to the network side, the third embodiment of the present invention here proposes a method of performing data transmission based on different links between heterogeneous networks in the uplink of packet transmission. The transmission device, its structural composition is shown in Figure 6, including:

The link queue maintenance unit 601 is configured to maintain, for each terminal in advance, the communication network links corresponding to at least two network cards inserted into the terminal as a link queue, and configure the terminal identifier of the terminal as the link queue The ID of the queue, and assign a unique queue address to the link queue.

Specifically, the link queue maintenance unit 601 is specifically configured to respectively receive the first link management message sent by the terminal through the communication network link corresponding to the at least two network cards inserted by the terminal itself, the first link management message Carry the terminal identification of the terminal and the information of the network cards that pass through respectively; use the terminal identification carried in the first link management message as the identification assigned to the link queue maintained for the terminal, and each received first link management message The different links corresponding to the network card information respectively carried in the link management message are maintained in the link queue maintained for the terminal.

The link queue maintenance unit is also used to manage the received second link when receiving the second link management message sent by the terminal when the communication network link corresponding to the network card inserted by the terminal changes. The link corresponding to the network card information carried in the message is maintained in the link queue corresponding to the terminal identifier carried in the second link management message.

The link queue search unit 602 is configured to find the corresponding link queue maintained by the link queue maintenance unit 601 according to the identifier of the terminal sending the message when receiving the message sent by the terminal.

The address conversion unit 603 is configured to convert the source address of the received message into the queue address of the link queue found by the link queue search unit 502 .

The sending unit 604 is configured to forward the packet whose source address has been converted by the address translation unit to the data gateway.

Correspondingly, based on the steps 208-212 in the second embodiment above, corresponding to the network side, the embodiment of the present invention here proposes a method of performing data transmission based on different links between heterogeneous networks in the downlink of packet transmission. The device, whose structural composition is shown in Figure 7, includes:

The receiving unit 701 is configured to receive a message sent by the data gateway.

The link queue search unit 702 is configured to use the destination address in the message received by the receiving unit 701 as the identifier of the link queue, and find the corresponding link queue in the link queues maintained in advance for different terminals.

The link selection unit 703 is configured to select a communication network link in the link queue found by the link queue search unit 702 .

Specifically, the link selection unit 703 is specifically configured to, among the communication network links included in the link queue searched by the link queue search unit 702, select a communication link according to the load balancing principle according to the current load conditions of different links. network link.

The address converting unit 704 is configured to convert the destination address of the packet received by the receiving unit 701 into the network card address of the network card corresponding to the link selected by the link selecting unit 703 .

The sending unit 705 is configured to send the message whose destination address has been converted by the address converting unit 704 to the terminal side through the communication network link selected by the link selecting unit 703 .

Correspondingly, corresponding to the network side, Embodiment 3 of the present invention here also proposes a terminal link queue management device, the terminal link queue management device may have downlink and/or uplink processing capabilities for packet transmission , that is, includes the device for performing data transmission based on different links between heterogeneous networks in the downlink and/or uplink of message transmission proposed in the third embodiment of the present invention. Preferably, the terminal link queue management device proposed here in the third embodiment of the present invention has both downlink and uplink processing capabilities for message transmission.

Correspondingly, corresponding to the uplink for message transmission, Embodiment 3 of the present invention also proposes a system for data transmission based on different links between heterogeneous networks, the system includes the above-mentioned uplink for message transmission Link management equipment and terminal link queue management equipment that perform corresponding functions on the road.

Correspondingly, corresponding to the downlink of message transmission, Embodiment 3 of the present invention also proposes a system for data transmission based on different links between heterogeneous networks. Link management equipment and terminal link queue management equipment that perform corresponding functions on the road.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (18)

1. a method of carrying out transfer of data based on different links between heterogeneous network, is characterized in that,Comprise:

The message that receiving terminal sends to network side based on Microsoft Loopback Adapter address;

In communication network link corresponding at least two network interface cards difference of terminal insertion, select a communication networkNetwork link, at least two network interface cards that wherein insert the respectively communication network link of correspondence are between heterogeneous networkDifferent links;

Changing the Microsoft Loopback Adapter address as source address in described message is the communication network link correspondence of selectingThe NIC address of network interface card; And

By the message behind conversion source address, send to network side by the communication network link of selecting.

2. the method for claim 1, is characterized in that, at least two network interface cards that insert in terminalIn corresponding communication network link, select a communication network link respectively, comprising:

In communication network link corresponding at least two network interface cards difference of terminal insertion, work as according to different linksFront loading condition, selects a communication network link according to load balancing principle.

3. a method of carrying out transfer of data based on different links between heterogeneous network, is characterized in that,Comprise:

In advance respectively for each terminal, by least two communication networks corresponding to network interface cards difference of this terminal insertionNetwork link is safeguarded as link queue, the terminal iidentification of this terminal is configured to the mark of this link queueKnow, and distribute unique queue address for this link queue;

Follow-up in the time receiving the message that terminal sends, find corresponding according to the mark of terminal that sends messageLink queue; And

The source address of the message that receives of conversion is the queue address of the link queue that finds;

By the message behind conversion source address, be transmitted to data gateway.

4. method as claimed in claim 3, is characterized in that, in advance respectively for each terminal, and willAt least two network interface cards that this terminal is inserted respectively corresponding communication network link safeguard as link queue,The mark that the terminal iidentification of this terminal is configured to this link queue, comprising:

Communication network link corresponding at least two network interface cards that receiving terminal inserts by self respectively sentThe first link management message, carries the terminal iidentification of this terminal and logical respectively in described the first link management messageThe information of the network interface card of crossing;

Using the terminal iidentification carrying in the first link management message as the link of distributing to as this terminal maintenanceThe mark of queue, and by the network interface card information correspondence of carrying respectively in each the first link management message receivingDifferent link maintenances to being in the link queue of this terminal maintenance.

5. method as claimed in claim 4, is characterized in that, in advance respectively for each terminal, and willAt least two network interface cards that this terminal is inserted respectively corresponding communication network link safeguard as link queue,Also comprise:

Follow-up receiving communication network link corresponding to network interface card that terminal inserts at self while changing, send outCome the second link management message time, by the network interface card information pair of carrying in the second link management message receivingIn link queue corresponding to terminal iidentification that the link maintenance of answering is carried to this second link management message.

6. a method of carrying out transfer of data based on different links between heterogeneous network, is characterized in that,Comprise:

Receive the message that data gateway is sent;

Using the destination address in the message receiving as the information of searching link queue mark, in advance for notIn the link queue of safeguarding respectively with terminal, find corresponding link queue; Wherein, described in advance for notThe link queue of safeguarding respectively with terminal is at least two communication networks corresponding to network interface cards difference that terminal is insertedLink;

In the link queue finding, select a communication network link;

The destination address of the message that conversion receives is the NIC address of the network interface card that the link of selection is corresponding;

By the message after conversion destination address, send to end side by the communication network link of selecting.

7. method as claimed in claim 6, is characterized in that, in the link queue finding, selects, a communication network link, comprising:

In each communication network link comprising in the link queue finding, according to current the bearing of different linksThe situation of carrying, selects a communication network link according to load balancing principle.

8. a device that carries out transfer of data based on different links between heterogeneous network, is characterized in that,Comprise:

Receiving element, the message sending to network side based on Microsoft Loopback Adapter address for receiving terminal;

Link management unit, at least two communication network links corresponding to network interface cards difference that insert in terminalIn, select a communication network link, at least two communication network chains corresponding to network interface cards difference that wherein insertRoad is the different links between heterogeneous network;

Address conversioning unit, in the message that receives of conversion receiving element as the Microsoft Loopback Adapter address of source addressFor the NIC address of network interface card corresponding to the communication network link of link management unit selection;

Transmitting element, for by the message behind address conversioning unit conversion source address, by link management unitThe communication network link of selecting sends to network side.

9. device as claimed in claim 8, is characterized in that, described link management unit, specifically usesIn communication network link corresponding at least two network interface cards difference inserting in terminal, current according to different linksLoading condition, according to load balancing principle select a communication network link.

10. a device that carries out transfer of data based on different links between heterogeneous network, is characterized in that,Comprise:

Link queue maintenance unit, in advance respectively for each terminal, this terminal is inserted at least twoThe individual network interface card respectively communication network link of correspondence is safeguarded as link queue, by the terminal iidentification of this terminalBe configured to the mark of this link queue, and distribute unique queue address for this link queue;

Link queue is searched unit, for follow-up in the time receiving the message that terminal sends, according to sending messageThe respective links queue of finding link queue maintenance unit to safeguard of the mark of terminal;

Address conversioning unit, searches unit into link queue and finds for changing the source address of the message receivingThe queue address of link queue;

Transmitting element, for by the message behind address conversioning unit conversion source address, is transmitted to data gateway.

11. devices as claimed in claim 10, is characterized in that, described link queue maintenance unit,Send out specifically for communication network link corresponding at least two network interface cards that receiving terminal inserts by self respectivelyThe the first link management message coming, carries the terminal iidentification of this terminal and divides in described the first link management messageThe information of the network interface card not passing through; Using the terminal iidentification carrying in the first link management message as distributing to as thisThe mark of the link queue of terminal maintenance, and will in each the first link management message receiving, carry respectivelyDifferent link maintenances corresponding to network interface card information to being in the link queue of this terminal maintenance.

12. devices as claimed in claim 11, is characterized in that, described link queue maintenance unit,Also receiving communication network link corresponding to network interface card that terminal inserts at self while changing for follow-up,Send the second link management message time, by the network interface card information of carrying in the second link management message receivingIn link queue corresponding to terminal iidentification that corresponding link maintenance is carried to this second link management message.

13. 1 kinds are carried out the device of transfer of data based on different links between heterogeneous network, it is characterized in that,Comprise:

Receiving element, the message of sending for receiving data gateway;

Link queue is searched unit, for the destination address of message that receiving element is received as linkThe mark of queue, in the link queue of safeguarding respectively for different terminals in advance, finds corresponding link teamRow; Wherein, the described link queue of safeguarding respectively for different terminals is in advance at least two nets that terminal is insertedThe communication network link that card difference is corresponding;

Link selection unit, for search in link queue link queue that unit finds select one logicalCommunication network link;

Address conversioning unit is link selection list for the destination address of changing the message that receiving element receivesThe NIC address of the network interface card that first link of selecting is corresponding;

Transmitting element, for address conversioning unit being changed to the message after destination address, by link selection listThe communication network link that unit is selected sends to end side.

14. devices as claimed in claim 13, is characterized in that, described link selection unit is concreteEach communication network link comprising for search link queue that unit finds in link queue, according toThe current loading condition of different links, selects a communication network link according to load balancing principle.

15. 1 kinds of link management equipment, is characterized in that, comprise the dress as described in as arbitrary in claim 8～9Put.

16. 1 kinds of terminal links queue management equipment, is characterized in that, comprise as claim 10～12 timesDevice described in one, and/or device as described in as arbitrary in claim 13～14.

17. 1 kinds are carried out the system of transfer of data based on different links between heterogeneous network, it is characterized in that,Comprise link management equipment and terminal links queue management equipment, wherein link management equipment comprise as right wantAsk 8～9 arbitrary described devices, terminal links queue management equipment comprises institute as arbitrary in claim 10～12The device of stating.

18. 1 kinds are carried out the system of transfer of data based on different links between heterogeneous network, it is characterized in that,Comprise terminal links queue management equipment and link management equipment, wherein terminal links queue management equipment comprisesDevice as described in as arbitrary in claim 13～14.