CN103561472A - Multi-service link distribution and reorganization device and method - Google Patents

Abstract

The present invention provides a device and method for distributing and reorganizing multi-service links. The device includes: a business multi-link distribution module, which can classify different input service flows according to service quality requirements, and detect available link and then distribute the classified service flows to different links, and send them out through the service multi-link transmitting module; the service multi-link recombination module compensates the services received by the service multi-link receiving module. Delay, equalize link loss, and reorganize service flow to restore the original service flow. The scheme of the present invention allocates link resources for different services according to the link state and business service quality requirements at the sending end, which not only meets the service transmission requirements, but also improves the utilization rate of system channel resources; at the receiving end, data can be delayed and Loss compensation, while reorganizing the same service according to the service category and packet sequence number, to solve the disorder problem in parallel transmission.

Description

A device and method for distributing and recombining multi-service links

technical field

The present invention relates to the technical field of mobile communication, in particular to a device for distributing and recombining multi-service links and a method thereof.

Background technique

Today, the third-generation mobile communication technology (3G) is becoming more and more popular, and the new-generation wireless mobile communication system (4G) is becoming more and more mature. Other technologies such as wireless local area network and wired optical fiber network have also been widely used. On the basis of the full development of these technologies, relying on existing resources to develop special-purpose communication support capabilities is a very important development direction in the future. Typical examples of this special purpose include Wenchuan earthquake emergency command and Olympic security. How to ensure communication security, reliability, stability and flexibility in these scenarios is a problem that must be considered and solved.

The key to solving the above needs is to use the theory of cooperative fusion of cognitive radio and heterogeneous networks to integrate multiple existing communication chains through technologies such as access network detection, multi-link fusion access, and data packet multi-link concurrent transmission. Roads are transformed into unified available resources through virtual reconstruction, and then reasonably distributed and reorganized according to business needs to achieve the purpose of resource optimization and reliable guarantee.

The background model used in the present invention is a multi-link transmission system. A lot of research has been done on this system model, and the main patents are:

Chinese Patent No. 200910078185.7 discloses a "mobile terminal and multi-link concurrent processing method". In this invention, the sending end assigns a port number to a successfully established data link through the The mapping table of the port number and the identification number of the successfully established data link, when sending a service, search the mapping table according to the port number encapsulated in the data service, and obtain the port number in the service The identification number of the data link indicated by , and the data service is transmitted through the data link indicated by the identification number. When the inventive method allocates multi-link transmission resources for services, channel quality and service characteristics are not considered, and the purpose of resource optimization cannot be achieved.

Chinese Patent No. 201110001507.5 discloses a "multi-link adaptive data transmission method and system", which includes the following steps: initially detect the bandwidth value of each link, and use 90% of the theoretical bandwidth value as the The actual transmission data rate of the link, dynamically detects and adjusts the bandwidth of each link. The invention only considers the channel bandwidth factor when performing multi-link transmission, and does not involve in dynamically allocating channel resources according to business and link state information.

Chinese Patent No. 201110121399.5 discloses a "load distribution method for end-to-end multi-link parallel transmission". In this invention, the error and error threshold between the load distribution theoretical value and the actual transmission value According to the comparison between values, different business segmentation methods are adopted according to different comparison results, which can effectively reduce the reordering delay at the receiving end after the data rate of the service source end changes significantly, thereby controlling the overall end-to-end delay. Although this patent assigns services to different links for transmission according to the proposed algorithm, the allocation algorithm only considers the status information of the channel, and does not take the service quality requirements of the service as a consideration factor. This method cannot achieve optimal performance when required services are transmitted in parallel.

The present invention mainly solves the problem of how to efficiently and reliably transmit services with different quality of service requirements on multi-link transmission channel resources. To solve this problem, the following problems need to be overcome: 1) How to: Service allocation channel resources; 2) When using heterogeneous resources for transmission, the same service may be transmitted through multiple links in parallel, and data packets may be out of order. And above-mentioned patent fails to solve these difficult problems uniformly.

Contents of the invention

Aiming at the defects or deficiencies in the prior art, the present invention aims to provide a multi-service link distribution and recombination device and its method, which are applied in a multi-link virtual reconfiguration network. For different input service flows, according to the quality of service It is required to classify services, detect available links, and then distribute the classified service flows to different links for transmission, and reorganize the service flows at the receiving end by compensating for the delay and loss of different links, so that Restore the original business flow.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

A multi-service link distribution and reorganization device is applied in a multi-link virtual reconfiguration network, and the multi-service link distribution and recombination device includes:

The business multi-link distribution module classifies the business according to the service quality requirement parameters of the input business flow according to the preset weighting algorithm, caches different types of business flows in different queues, and the business multi-link distribution module Detect available links and link state information by sending training sequences, and then allocate service flows to different links according to service types and available link resource states;

The service multi-link transmitting module is connected to the service multi-link distribution module signal, and is used to send the training sequence and the allocated service flow;

A service multi-link receiving module, configured to receive the training sequence and service flow sent by the service multi-link transmitting module;

The service multi-link reorganization module is connected with the signal of the service multi-link receiving module, regularly analyzes the training sequence obtained by the service multi-link receiving module, obtains delay parameters and link loss parameters on different links, and according to The delay parameter and the link loss parameter perform link delay compensation and link loss equalization on data packets of the same service flow transmitted through different links, and then reorganize the service flow to restore the original service flow;

Wherein, the service multi-link distribution module and the service multi-link transmitting module are located at the sending end, and a plurality of parallel-connected transmission lines are configured between the service multi-link distribution module and the service multi-link transmitting module, wherein One transmission line is used for link state detection, each link channel corresponds to one transmission line, the input service flow is distributed to different links by the service multi-link distribution module, and then transmitted from the corresponding transmission line to the The service multi-link transmitting module sends out from the link corresponding to the service multi-link transmitting module;

The service multi-link receiving module and the service multi-link reorganization module are located at the receiving end, and a plurality of parallel-connected transmission lines are configured between the service multi-link reception module and the service multi-link recombination module, one of which is It is used for link status acquisition, and each link channel corresponds to a transmission line. The service multi-link receiving module receives data on multiple links, and then sends the data received by different links to the service from the corresponding transmission line The multi-link recombination module, the business multi-link recombination module performs delay, loss compensation and service recombination on the received data, and then outputs the service flow.

Further, the service multi-link distribution module includes an available link detection module, a service type division module and a link allocation module, wherein:

The available link detection module sends detection data packets through the service multi-link transmission module to detect various current available links, and sends training sequences on the available links to assist the receiving end in analyzing the status information of the available links , and obtain the state information of the currently available link through the feedback data of the receiving end, and then submit the state information of the available link to the link allocation module;

The business type division module, for different input business flows, divides the business flows into different service categories according to the service quality requirement parameters of the service flows according to the preset weighting algorithm, and establishes a dedicated cache for each service category Queue, the classified business flow enters the corresponding cache queue for further processing;

The link allocation module presets a corresponding resource allocation scheme for each service category, and the link allocation module continuously polls whether there is a service flow to be sent in the cache queue of each service category, and if there is a service flow to be sent , then allocate link resources for the service flow according to the service category of the service flow and the current available link state information provided by the link detection module, add the service category identifier and packet sequence number to the data packet of the service flow to be sent allocated to different links, and then output to the service multi-link transmitting module.

Further, the service multi-link reorganization module includes a link information acquisition module, a link delay compensation module, a link loss compensation module and a service flow reorganization module, wherein:

The link information acquisition module analyzes the training sequences on different links received by the service multi-link receiving module to obtain delay parameters and link loss parameters of different links, and then correspondingly The delay parameters are submitted to the link delay compensation module and the link loss parameters are submitted to the link loss compensation module, and the delay parameters and link loss parameters are sent to the service multi-link transmission through the feedback channel module;

The link delay compensation module, according to the delay parameters provided by the link information acquisition module, performs corresponding delay compensation on the data packets sent by the same service flow through different links, so that the service flow reaches time synchronization;

The link loss compensation module, according to the link loss parameters provided by the link information acquisition module, performs corresponding link loss compensation on the data packets sent by the same service flow through different links after synchronization;

The service flow recombination module sets dedicated service flow buffers for different service categories. For the received data packets of the same service flow that have undergone link delay compensation and loss compensation, the service category identifier in the data packet will The data is stored in the corresponding buffer area, and after the preset conditions are met, the data packets in the buffer area are reorganized according to the packet sequence number to restore the original business flow.

According to the improvement of the present invention, a method for distributing and recombining service multi-links based on the device for distributing and recombining multi-service links is also proposed, which is applied to a multi-link virtual reconfiguration network, including the following steps:

Step 1: At the sending end, regularly send training sequences to detect the status of each link, and classify the service flow according to the service quality requirement parameters of the input service flow, and then allocate links according to the link status and service type, and then assign the allocated The service flow is sent out through the corresponding link; and

Step 2: At the receiving end, perform delay compensation and loss compensation on the received data packets according to the obtained link state information, and then recombine the multiplexed data packets of the same service flow to restore the original service flow.

Further, said step 1 includes the following steps:

S101: Available link detection step, using a link detection module to send detection data packets to detect various current available links, and send training sequences on available links to assist the link information acquisition module at the receiving end to analyze available links state information, the receiving end returns the obtained state information of the currently available link to the sending end through the feedback channel, and the link detection module then submits the state information of the available link to the link allocation module;

S102: The business type division step, according to the service quality requirement parameters of the input business flow, divide the business flow into different business categories according to the preset weighting algorithm, and establish a dedicated cache queue for each business category, and classify the business flow Enter the corresponding cache queue to wait for further processing;

S103: link allocation step, using a link allocation module to continuously poll whether there is a service flow to be sent in the cache queue of each service category, if there is a service flow to be sent, then according to the preset resource allocation scheme, according to the business flow The service category and current available link state information allocate link resources for the service flow, and assign the service flow to different links after adding the service category identifier and packet sequence number to the data packets of the service flow to be sent; and

S104: Sending the service flow, sending the allocated service flow.

Further, said step 2 includes the following steps:

S201: Acquire time delay parameters and link loss parameters, use a link information acquisition module to analyze training sequences on different links received by the receiving end, and obtain time delay parameters and link loss parameters of different links;

S202: Delay compensation step, using a link delay compensation module to perform corresponding delay according to the delay parameters provided by the link information acquisition module of the receiving end for the received data packets of the same service flow transmitted through different links Compensation, so that the business flow achieves time synchronization;

S203: Link loss compensation step, using a link loss compensation module to perform corresponding corresponding compensation according to the link loss parameters provided by the link information acquisition module of the receiving end for the data packets transmitted by the same service flow after synchronization through different links loss compensation; and

S204: The business flow reorganization step, using a business flow reorganization module to store the data in the corresponding dedicated data packet according to the service category identifier in the data packet for the received data packet of the same service flow that has undergone link delay compensation and loss compensation In the buffer area, after the preset condition is met, the data packets in the buffer area are reassembled according to the packet sequence number to restore the original service flow.

It can be seen from the above technical solutions of the present invention that the multi-service link distribution and recombination device and method thereof provided by the present invention classify the services according to the service quality requirements for different input service flows, detect available links, and then The classified service flow is assigned to different links for transmission, and the service flow is reorganized by compensating for the delay and loss of different links at the receiving end, thereby restoring the original service flow. Compared with the prior art, the present invention considers the quality of service requirements of the service and the channel state information of each link (such as bandwidth, time delay, path loss, etc.) demand, and can improve the channel utilization of the system;

(1) At the receiving end, the time delay and link loss of multiple links are compensated successively, which greatly reduces the influence of the channel on the transmitted data and has strong applicability;

(2) Add information such as identification and service type to each data packet at the sending end, and reorganize the same service data packet according to the packet sequence number at the receiving end, which can well overcome the out-of-sequence problem of parallel transmission, and at the same time, according to the The service category adjusts the service output conditions of the buffer area, and on the basis of solving the out-of-sequence problem, it can also meet the service delay requirements.

Description of drawings

Fig. 1 is a schematic diagram of a device for distributing and recombining multi-service links.

Fig. 2 is a schematic diagram of a service multi-link distribution module.

Fig. 3 is a schematic diagram of a service multi-link reorganization module.

Fig. 4 is a flow chart of realizing the multi-service link distribution method.

Fig. 5 is a flow chart of realizing the multi-service link reorganization method.

Detailed ways

In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

As shown in Figure 1, according to a preferred embodiment of the present invention, a multi-service link distribution and reorganization device is applied in a multi-link virtual reconfiguration network, and the multi-service link distribution and reorganization device includes a service multi-chain Road distribution module, business multi-link transmitting module, business multi-link receiving module and business multi-link recombination module. Referring to Figure 1 and combined with Figure 2 and Figure 3, the description of each module is as follows:

The business multi-link distribution module classifies the business according to the service quality requirement parameters of the input business flow according to the preset weighting algorithm, caches different types of business flows in different queues, and the business multi-link distribution module Detect available links and link state information by sending training sequences, and then allocate service flows to different links according to service types and available link resource states.

The service multi-link transmitting module is connected with the service multi-link distribution module, and is used to send the training sequence and the allocated service flow.

The service multi-link receiving module is configured to receive the training sequence and service flow sent by the service multi-link transmitting module.

The service multi-link reorganization module is connected with the signal of the service multi-link receiving module, regularly analyzes the training sequence obtained by the service multi-link receiving module, obtains delay parameters and link loss parameters on different links, and according to The delay parameter and link loss parameter perform link delay compensation and link loss balance on data packets of the same service flow transmitted through different links, and then recombine the service flow to restore the original service flow.

Wherein, the service multi-link distribution module and the service multi-link transmitting module are located at the sending end, and a plurality of parallel-connected transmission lines are configured between the service multi-link distribution module and the service multi-link transmitting module, wherein One transmission line is used for link state detection, each link channel corresponds to one transmission line, the input service flow is distributed to different links by the service multi-link distribution module, and then transmitted from the corresponding transmission line to the The service multi-link transmitting module sends out the link corresponding to the service multi-link transmitting module.

The service multi-link receiving module and the service multi-link reorganization module are located at the receiving end, and a plurality of parallel-connected transmission lines are configured between the service multi-link reception module and the service multi-link recombination module, one of which is It is used for link status acquisition, and each link channel corresponds to a transmission line. The service multi-link receiving module receives data on multiple links, and then sends the data received by different links to the service from the corresponding transmission line The multi-link recombination module, the business multi-link recombination module performs delay, loss compensation and service recombination on the received data, and then outputs the service flow.

At the sending end, assuming that there are N links at the sending end, there are N+1 transmission lines connected in parallel between the service multi-link distribution module and the service multi-link transmission module, each link channel corresponds to a transmission line, and there are One transmission line is used for link state detection, and the service data input stream is distributed to different links through the service multi-link distribution module, and then input from the corresponding transmission line to the service multi-link transmitting module, and the corresponding link of the module send it out. At the receiving end, correspondingly, there are N+1 transmission lines connected in parallel between the business multi-link receiving module and the business multi-link recombination module, each link channel corresponds to a transmission line, and there is also a transmission line for linking Obtain the state of the road, receive data on multiple links, and then send the data received by different links to the service multi-link reassembly module from the corresponding transmission line, and the service multi-link reassembly module delays and delays the received data Loss compensation and service reorganization, and then output service flow.

As shown in Figure 2, the service multi-link distribution module includes an available link detection module, a service type division module and a link allocation module, wherein:

The available link detection module sends detection data packets through the business multi-link transmitting module to detect various current available links, including wireless networks (wireless local area network, mobile communication network, satellite network, etc.) and wired networks (optical fiber , coaxial cable, etc.), the training sequence is sent on the available link to assist the receiving end to analyze the status information of the available link, such as delay, bit error rate, link loss, bandwidth and other status information, and through the receiving end The feedback data obtains the status information of the currently available links, and then submits the status information of the available links to the link allocation module.

The business type division module, for different input business streams, according to the quality of service requirements parameters of the business streams, such as the different requirements of different services such as voice and video on service delay and bit error rate, according to the preset weighting algorithm Divide service flows into different service categories, for example, emergency call service, real-time service, non-real-time service, etc., and establish a dedicated cache queue for each service category, and the classified service flow enters the corresponding cache queue Awaiting further processing.

The link allocation module presets a corresponding resource allocation scheme for each service category. For example, the emergency call service has the highest priority, and its resource requirements are first met. The link allocation module continuously polls the resources of each service category. Whether there is a service flow to be sent in the buffer queue, if there is a service flow to be sent, then according to the service category of the service flow and the current available link status information provided by the link detection module, link resources are allocated for the service flow, and the service flow to be sent After the service category identifier and packet sequence number are added to the data packet, the service flow is distributed to different links, and then output to the service multi-link transmitting module.

Therefore, after the service signal is input to the service multi-link distribution module, it will first be divided into service categories by the service type division module, and then stored in the corresponding queue, and then the link distribution module will divide the status of each queue of the module according to the service type And each link status information provided by the link detection module can be used to allocate channel resources for the service to be sent, and then the service package is taken out from the queue in the service type division module, plus the package sequence number and service category identification, and output to the service multi-link The transmitting module sends out the data packet.

As shown in Figure 3, the business multi-link reorganization module includes a link information acquisition module, a link delay compensation module, a link loss compensation module and a service flow reorganization module, wherein:

The link information acquisition module analyzes the training sequences on different links received by the service multi-link receiving module to obtain delay parameters and link loss parameters of different links, and then correspondingly The delay parameters are submitted to the link delay compensation module and the link loss parameters are submitted to the link loss compensation module, and the delay parameters and link loss parameters are sent to the service multi-link transmission through the feedback channel module.

The link delay compensation module, according to the delay parameters provided by the link information acquisition module, performs corresponding delay compensation for the data packets sent by the same service flow through different links, so that the service flows can achieve time synchronization. For example, due to the long transmission distance of the satellite link, it takes a long time and will arrive at the receiving end later than the data transmitted through other links transmitted at the same time. Therefore, it is necessary to compensate for the delay, so that the service flow reaches Time synchronization.

The link loss compensation module, according to the link loss parameters provided by the link information acquisition module, performs corresponding link loss compensation for data packets sent by the same service flow through different links after synchronization.

The service flow recombination module sets dedicated service flow buffers for different service categories. For the received data packets of the same service flow that have undergone link delay compensation and loss compensation, the service category identifier in the data packet will The data is stored in the corresponding buffer area, and after the preset conditions are met, the data packets in the buffer area are reorganized according to the packet sequence number to restore the original business flow.

Therefore, after the receiving end receives the data packet, according to the link delay parameters and path loss parameters provided by the link information acquisition module, the delay compensation and loss compensation are performed successively through the link delay compensation module and the link loss compensation module. Compensation, and then input to the service flow recombination module, according to the service category identification and packet sequence number in the data packet, the same service is reorganized after multi-link transmission, and the original service flow is restored.

Referring to Figures 1-3 and shown in Figures 4-5, the multi-service link distribution and reorganization method implemented based on the multi-service link distribution and reorganization device is applied to a multi-link virtual reconfiguration network, including the following steps :

Step 1: At the sending end, regularly send training sequences to detect the status of each link, and classify the service flow according to the service quality requirement parameters of the input service flow, and then allocate links according to the link status and service type, and then assign the allocated The service flow is sent out through the corresponding link; and

Step 2: At the receiving end, perform delay compensation and loss compensation on the received data packets according to the obtained link state information, and then recombine the multiplexed data packets of the same service flow to restore the original service flow.

Further, said step 1 includes the following steps:

S101: Available link detection step, using a link detection module to send detection data packets to detect various current available links, and send training sequences on available links to assist the link information acquisition module at the receiving end to analyze available links state information, the receiving end returns the obtained state information of the currently available link to the sending end through the feedback channel, and the link detection module then submits the state information of the available link to the link allocation module;

S102: The business type division step, according to the service quality requirement parameters of the input business flow, divide the business flow into different business categories according to the preset weighting algorithm, and establish a dedicated cache queue for each business category, and classify the business flow Enter the corresponding cache queue to wait for further processing;

S103: link allocation step, using a link allocation module to continuously poll whether there is a service flow to be sent in the cache queue of each service category, if there is a service flow to be sent, then according to the preset resource allocation scheme, according to the business flow The service category and current available link state information allocate link resources for the service flow, and assign the service flow to different links after adding the service category identifier and packet sequence number to the data packets of the service flow to be sent; and

S104: Sending the service flow, sending the allocated service flow.

Further, said step 2 includes the following steps:

S201: Acquire time delay parameters and link loss parameters, use a link information acquisition module to analyze training sequences on different links received by the receiving end, and obtain time delay parameters and link loss parameters of different links;

S202: Delay compensation step, using a link delay compensation module to perform corresponding delay according to the delay parameters provided by the link information acquisition module of the receiving end for the received data packets of the same service flow transmitted through different links Compensation, so that the business flow achieves time synchronization;

S203: Link loss compensation step, using a link loss compensation module to perform corresponding corresponding compensation according to the link loss parameters provided by the link information acquisition module of the receiving end for the data packets transmitted by the same service flow after synchronization through different links loss compensation; and

S204: The business flow reorganization step, using a business flow reorganization module to store the data in the corresponding dedicated data packet according to the service category identifier in the data packet for the received data packet of the same service flow that has undergone link delay compensation and loss compensation In the buffer area, after the preset condition is met, the data packets in the buffer area are reassembled according to the packet sequence number to restore the original service flow.

It can be seen from the above technical solutions of the present invention that the multi-service link distribution and recombination device and method thereof provided by the present invention classify the services according to the service quality requirements for different input service flows, detect available links, and then The classified service flow is assigned to different links for transmission, and the service flow is reorganized by compensating for the delay and loss of different links at the receiving end, thereby restoring the original service flow. Compared with the prior art, the present invention considers the quality of service requirements of the service and the channel state information of each link (such as bandwidth, time delay, path loss, etc.) demand, and can improve the channel utilization of the system;

(1) At the receiving end, the time delay and link loss of multiple links are compensated successively, which greatly reduces the influence of the channel on the transmitted data and has strong applicability;

(2) Add information such as identification and service type to each data packet at the sending end, and reorganize the same service data packet according to the packet sequence number at the receiving end, which can well overcome the out-of-sequence problem of parallel transmission, and at the same time, according to the The service category adjusts the service output conditions of the buffer area, and on the basis of solving the out-of-sequence problem, it can also meet the service delay requirements.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art of the present invention can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the claims.

Claims (6)

1. A multi-service link distribution and reorganization device is applied in a multi-link virtual reconfiguration network, characterized in that, the multi-service link distribution and reorganization device comprises: The business multi-link distribution module classifies the business according to the service quality requirement parameters of the input business flow according to the preset weighting algorithm, caches different types of business flows in different queues, and the business multi-link distribution module Detect available links and link state information by sending training sequences, and then allocate service flows to different links according to service types and available link resource states; The service multi-link transmitting module is connected to the service multi-link distribution module signal, and is used to send the training sequence and the allocated service flow; A service multi-link receiving module, configured to receive the training sequence and service flow sent by the service multi-link transmitting module; The service multi-link reorganization module is connected with the signal of the service multi-link receiving module, regularly analyzes the training sequence obtained by the service multi-link receiving module, obtains delay parameters and link loss parameters on different links, and according to The delay parameter and the link loss parameter perform link delay compensation and link loss equalization on data packets of the same service flow transmitted through different links, and then reorganize the service flow to restore the original service flow; Wherein, the service multi-link distribution module and the service multi-link transmitting module are located at the sending end, and a plurality of parallel-connected transmission lines are configured between the service multi-link distribution module and the service multi-link transmitting module, wherein One transmission line is used for link state detection, each link channel corresponds to one transmission line, the input service flow is distributed to different links by the service multi-link distribution module, and then transmitted from the corresponding transmission line to the The service multi-link transmitting module sends out from the link corresponding to the service multi-link transmitting module; The service multi-link receiving module and the service multi-link reorganization module are located at the receiving end, and a plurality of parallel-connected transmission lines are configured between the service multi-link reception module and the service multi-link recombination module, one of which is It is used for link status acquisition, and each link channel corresponds to a transmission line. The service multi-link receiving module receives data on multiple links, and then sends the data received by different links to the service from the corresponding transmission line The multi-link recombination module, the business multi-link recombination module performs delay, loss compensation and service recombination on the received data, and then outputs the service flow. 2. The multi-service link distribution and reorganization device according to claim 1, wherein the multi-service link distribution module includes an available link detection module, a service type division module and a link allocation module, wherein: The available link detection module sends detection data packets through the service multi-link transmission module to detect various current available links, and sends training sequences on the available links to assist the receiving end in analyzing the status information of the available links , and obtain the state information of the currently available link through the feedback data of the receiving end, and then submit the state information of the available link to the link allocation module; The business type division module, for different input business flows, divides the business flows into different service categories according to the service quality requirement parameters of the service flows according to the preset weighting algorithm, and establishes a dedicated cache for each service category Queue, the classified business flow enters the corresponding cache queue for further processing; The link allocation module presets a corresponding resource allocation scheme for each service category, and the link allocation module continuously polls whether there is a service flow to be sent in the cache queue of each service category, and if there is a service flow to be sent , then allocate link resources for the service flow according to the service category of the service flow and the current available link state information provided by the link detection module, add the service category identifier and packet sequence number to the data packet of the service flow to be sent allocated to different links, and then output to the service multi-link transmitting module. 3. The multi-service link distribution and reorganization device according to claim 1, wherein the service multi-link reorganization module includes a link information acquisition module, a link delay compensation module, a link loss compensation module and Business flow reorganization module, in which: The link information acquisition module analyzes the training sequences on different links received by the service multi-link receiving module to obtain delay parameters and link loss parameters of different links, and then correspondingly The delay parameters are submitted to the link delay compensation module and the link loss parameters are submitted to the link loss compensation module, and the delay parameters and link loss parameters are sent to the service multi-link transmission through the feedback channel module; The link delay compensation module, according to the delay parameters provided by the link information acquisition module, performs corresponding delay compensation on the data packets sent by the same service flow through different links, so that the service flow reaches time synchronization; The link loss compensation module, according to the link loss parameters provided by the link information acquisition module, performs corresponding link loss compensation on the data packets sent by the same service flow through different links after synchronization; The service flow recombination module sets dedicated service flow buffers for different service categories. For the received data packets of the same service flow that have undergone link delay compensation and loss compensation, the service category identifier in the data packet will The data is stored in the corresponding buffer area, and after the preset conditions are met, the data packets in the buffer area are reorganized according to the packet sequence number to restore the original business flow. 4. A service multi-link distribution and recombination method based on the multi-service link distribution and recombination device realized in claim 1, applied in a multi-link virtual reconfiguration network, characterized in that it comprises the following steps: Step 1: At the sending end, regularly send training sequences to detect the status of each link, and classify the service flow according to the service quality requirement parameters of the input service flow, and then allocate links according to the link status and service type, and then assign the allocated The service flow is sent out through the corresponding link; and Step 2: At the receiving end, perform delay compensation and loss compensation on the received data packets according to the obtained link state information, and then recombine the multiplexed data packets of the same service flow to restore the original service flow. 5. The business multi-link distribution and recombination method according to claim 4, wherein said step 1 comprises the following steps: S101: Available link detection step, using a link detection module to send detection data packets to detect various current available links, and send training sequences on available links to assist the link information acquisition module at the receiving end to analyze available links state information, the receiving end returns the obtained state information of the currently available link to the sending end through the feedback channel, and the link detection module then submits the state information of the available link to the link allocation module; S102: The business type division step, according to the service quality requirement parameters of the input business flow, divide the business flow into different business categories according to the preset weighting algorithm, and establish a dedicated cache queue for each business category, and classify the business flow Enter the corresponding cache queue to wait for further processing; S103: link allocation step, using a link allocation module to continuously poll whether there is a service flow to be sent in the cache queue of each service category, if there is a service flow to be sent, then according to the preset resource allocation scheme, according to the business flow The service category and current available link state information allocate link resources for the service flow, and assign the service flow to different links after adding the service category identifier and packet sequence number to the data packets of the service flow to be sent; and S104: Sending the service flow, sending the allocated service flow. 6. The business multi-link distribution and recombination method according to claim 5, wherein said step 2 comprises the following steps: S201: Acquire time delay parameters and link loss parameters, use a link information acquisition module to analyze training sequences on different links received by the receiving end, and obtain time delay parameters and link loss parameters of different links; S202: Delay compensation step, using a link delay compensation module to perform corresponding delay according to the delay parameters provided by the link information acquisition module of the receiving end for the received data packets of the same service flow transmitted through different links Compensation, so that the business flow achieves time synchronization; S203: Link loss compensation step, using a link loss compensation module to perform corresponding corresponding compensation according to the link loss parameters provided by the link information acquisition module of the receiving end for the data packets transmitted by the same service flow after synchronization through different links loss compensation; and S204: The business flow reorganization step, using a business flow reorganization module to store the data in the corresponding dedicated data packet according to the service category identifier in the data packet for the received data packet of the same service flow that has undergone link delay compensation and loss compensation In the buffer area, after the preset condition is met, the data packets in the buffer area are reassembled according to the packet sequence number to restore the original service flow.

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