CN103561472A - Multi-service link distribution and reorganization device and method - Google Patents
Multi-service link distribution and reorganization device and method Download PDFInfo
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Abstract
The invention provides a multi-service link distribution and reorganization device and method. The device comprises a service multi-link distribution module and a service multi-link reorganization module, wherein the service multi-link distribution module can classify services of different input service streams according to service quality requirements, detect available links, and then distribute the classified service streams to different links, and the classified service streams are sent out through a service multi-link transmission module; the service multi-link reorganization module is used for compensating for the time delay of the different links of the services which are received by a service multi-link receiving module so as to balance link loss, reorganize the service streams and restore original service streams. According to the scheme of the multi-service link distribution and reorganization device and method, link resources are distributed to the different services at the sending end according to link states and the service quality requirements, as a result, service transmission demands are met, and the utilization rate of system channel resources also can be increased; time delay and loss compensation can be conducted on data at the receiving end, and meanwhile, the out-of-order problem in parallel transmission is solved due to the fact that the same service is reorganized according to the type and package number of the service.
Description
Technical field
The present invention relates to mobile communication technology field, in particular to the distribution of a kind of multi-service link and reconstruction unit and method thereof.
Background technology
Now, 3G (Third Generation) Moblie technology (3G) is day by day universal, new generation of wireless mobile communication system (4G) is ripe day by day, and other technology such as WLAN (wireless local area network), wired optical networking are also all widely used.On the full-blown basis of these technology, relying on the communication support ability of existing resource exploitation special purpose is following very important developing direction.The exemplary of this special purpose has comprised Wenchuan earthquake emergency command and Olympic security etc.How to guarantee that communications security, reliability, stability and flexibility under these scenes are the problems that must consider and solve.
Solve the key of the demand, to utilize cognitive radio and the collaborative blending theory of heterogeneous network, by access network survey, the technology such as multilink merges access, packet multilink concurrent transmission, by a plurality of existing communication links by virtual reconstruct, become unified available resources, according to business demand, reasonably distribute and recombinate again, reaching the object of resource optimization and reliable guarantee.
The applied background model of the present invention is multi-chain circuit transmission system, for this system model, has carried out a lot of research, and main patent has:
In No. 200910078185.7 Chinese patent, disclosed a kind of " a kind of method of mobile terminal and multilink concurrent processing ", in this invention, transmitting terminal is the data link assignment of port numbers being successfully established by link establishment module, and set up described port numbers with described in the mapping table of identification number of the data link that is successfully established, when the business of transmission, according to the port numbers being encapsulated in data service, search described mapping table, obtain with described business in the identification number of the data link that represents of port numbers, and the data link representing by described identification number is launched described data service.When this inventive method is traffic assignments multi-chain circuit transmission resource, do not consider channel quality and traffic performance, can not reach the object of resource optimization.
In the 201110001507.5th good Chinese patent, disclosed a kind of " the adaptive data transmission method of multilink and system ", in this invention, comprise following steps: every link bandwidth value of initial examination and measurement, according to the speed of the 90% actual transmissions data as this link of theoretical bandwidth value, detect dynamically and adjust the bandwidth of every link.This invention, when carrying out multi-chain circuit transmission, is only considered channel width factor, and does not relate to according to business and link-state information dynamic assignment channel resource.
In No. 201110121399.5 Chinese patent, disclosed a kind of " a kind of load allocation method of end-to-end multilink parallel transmission ", in this invention, by the error between load theory of distribution value and actual transmissions value and the contrast between error threshold value, according to different comparing results, adopt different business separation methods, can effectively reduce after the data rate of business source occurs significantly to change, the time delay that reorders of receiving terminal, thus whole time delay end to end controlled.Although this patent is that business is transmitted to different links according to carried algorithm assigns, but allocation algorithm is only considered the state information of channel, not using the QoS requirement of business as Consideration, therefore when the business parallel transmission for multiple different service quality demand, the method can not reach best performance.
How the present invention mainly solves on multi-chain circuit transmission channel resource efficient, transmitting different service quality demand traffic issues, address this problem and need to overcome a following difficult problem: how according to the different transmittabilities of the QoS requirement of different business and channel, be 1) traffic assignments channel resource; 2), while utilizing heterogeneous resource to transmit, same business may there will be data packet disorder situation after multilink parallel transmission.And the above patent fails to unify these difficult problems of solution.
Summary of the invention
The defect or the deficiency that for prior art, exist, the present invention aims to provide the distribution of a kind of multi-service link and reconstruction unit and method thereof, be applied in the virtual reconstructed network of multilink, different business stream to input, classifies to business according to quality of service requirement, surveys available link, then sorted traffic flow assignment is sent to different links, and receiving terminal by compensation different links time delay, loss, Business Stream is recombinated, thereby recovers original Business Stream.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is as follows:
Link distribution and a reconstruction unit, be applied in the virtual reconstructed network of multilink, and this multi-service link distribution and reconstruction unit comprise:
Business multilink distribution module, it is according to the quality of service requirement parameter of incoming traffic stream, according to preset weighting algorithm, business is classified, dissimilar Business Stream is buffered in different queues, and this business multilink distribution module is surveyed available link and link-state information by sending training sequence, then according to type of service and available link circuit resource state by traffic flow assignment to different links;
Business multilink transmitter module, is connected with described business multilink distribution mould signal, for described training sequence and the Business Stream that distributes are sent;
Business multilink receiver module, the training sequence and the Business Stream that for receiving described business multilink transmitter module, send out;
Business multilink recombination module, be connected with described business multilink receiver module signal, the training sequence periodic analysis obtaining according to business multilink receiver module, obtain delay parameter and link load parameter on different links, and with link load parameter, the packet of the same Business Stream through different link transmission is carried out to chain-circuit time delay compensation and link load equilibrium according to described delay parameter, then Business Stream is recombinated, to recover original Business Stream;
Wherein, described business multilink distribution module and business multilink transmitter module are positioned at transmitting terminal, between described business multilink distribution module and business multilink transmitter module, dispose the transmission line of many parallel joins, a transmission lines is wherein surveyed for Link State, the corresponding transmission lines of each link channel, the Business Stream of described input is assigned on different links by described business multilink distribution module, then from corresponding transmission line to described business multilink transmitter module, from link corresponding to this business multilink transmitter module, send,
Described business multilink receiver module and business multilink recombination module are positioned at receiving terminal, between described business multilink receiver module and business multilink recombination module, dispose the transmission line of many parallel joins, a transmission lines wherein obtains for Link State, and the corresponding transmission lines of each link channel, described business multilink receiver module receives data on a plurality of links, then the data that different links received are issued business multilink recombination module from corresponding transmission line, business multilink recombination module carries out time delay to the data that receive, loss balancing and business reorganization, then outgoing traffic flows.
Further, described business multilink distribution module comprises available link detecting module, type of service division module and link assignment module, wherein:
Described available link detecting module, by business multilink transmitter module, send probe data packet for surveying current various available links, on available link, by sending training sequence, with auxiliary reception end, analyze the state information of available link, and by the feedback data of receiving terminal, obtain the state information of current available link, and then the state information of available link is submitted to link assignment module;
Described type of service is divided module, different Business Stream for input, according to the quality of service requirement parameter of Business Stream, according to preset weighting algorithm, Business Stream is divided into different classs of service, and set up exclusive buffer queue for each class of service, sorted Business Stream enters corresponding buffer queue products for further and processes;
Described link assignment module, for each class of service preset corresponding Resource Allocation Formula, whether the link assignment module constantly buffer queue of each class of service of poll has Business Stream to be sent, if there is Business Stream to be sent, the current available link state information providing according to the class of service of Business Stream and link detection module is traffic flow assignment link circuit resource, in the packet of Business Stream to be sent, add after service identification and bag sequence number traffic flow assignment to different links, then output to described business multilink transmitter module.
Further, described business multilink recombination module comprises link information acquisition module, chain-circuit time delay compensating module, link load compensating module and business process reengineering module, wherein:
Described link information acquisition module, training sequence on the different links that receive by described business multilink receiver module is analyzed, obtain delay parameter and the link load parameter of different links, then accordingly described delay parameter submitted to chain-circuit time delay compensating module and link load parameter is submitted to link load compensating module, and by feedback channel, described delay parameter and link load parameter being sent to described business multilink transmitter module;
Chain-circuit time delay compensating module, the delay parameter providing according to described link information acquisition module, the packet that same Business Stream is sent through different links carries out corresponding delay compensation, thereby makes Business Stream reach time synchronized;
Link load compensating module, the link load parameter providing according to described link information acquisition module, the packet that the same Business Stream after synchronous is sent through different links carries out corresponding link load compensation;
Business process reengineering module, it arranges exclusive Business Stream buffer area for different classs of service, packet for the same Business Stream that passes through chain-circuit time delay compensation and loss balancing receiving, according to the service identification in packet, data are stored in corresponding buffer area, after reaching preset condition, the packet in buffer area is recombinated to Business Stream according to bag sequence number, recover original Business Stream.
According to improvement of the present invention, a kind of distribution of business multilink and recombination method based on described multi-service link distribution and reconstruction unit realization also proposed, be applied to, in the virtual reconstructed network of multilink, comprise the following steps:
Step 1: regularly send training sequence at transmitting terminal and survey each Link State, and the quality of service requirement parameter according to incoming traffic stream is classified to Business Stream, then according to Link State and type of service, carry out link assignment, then by the Business Stream distributing by sending on corresponding link; And
Step 2: according to obtaining each link-state information, the packet receiving is carried out to delay compensation and loss balancing at receiving terminal, then the packet after multiplexing is recombinated by same Business Stream, recovers original Business Stream.
Further, described step 1 comprises the following steps:
S101: available link detection steps, utilize a link detection module to send probe data packet for surveying current various available links, and the link information acquisition module that sends training sequence auxiliary reception end on available link is analyzed the state information of available link, receiving terminal returns to transmitting terminal by feedback channel by the state information of the current available link obtaining, described link detection module and then the state information of available link is submitted to link assignment module;
S102: type of service partiting step, according to the QoS requirement parameter of incoming traffic stream, according to preset weighting algorithm, Business Stream is divided into different classs of service, and set up exclusive buffer queue for each class of service, sorted Business Stream enters corresponding buffer queue and processes with products for further;
S103: link assignment step, utilize a link assignment module constantly the buffer queue of each class of service of poll whether have Business Stream to be sent, if there is Business Stream to be sent, according to preset Resource Allocation Formula, according to the class of service of Business Stream and current available link state information, be traffic flow assignment link circuit resource, and in the packet of Business Stream to be sent, add after service identification and bag sequence number traffic flow assignment to different links; And
S104: Business Stream sends, and the Business Stream distributing is sent.
Further, described step 2 comprises the following steps:
S201: obtain delay parameter and link load parameter, utilize the training sequence on the different links that a link information acquisition module receives receiving terminal to analyze, obtain delay parameter and the link load parameter of different links;
S202: delay compensation step, utilize the packet of a chain-circuit time delay compensating module to the different link transmission of same Business Stream process that receive, the delay parameter providing according to the link information acquisition module of receiving terminal carries out corresponding delay compensation, thereby makes Business Stream reach time synchronized;
S203: link load compensation process, utilize the packet of a link load compensating module to the different link transmission of same Business Stream process after synchronous, the link load parameter providing according to the link information acquisition module of receiving terminal is carried out corresponding loss balancing; And
S204: business process reengineering step, utilize a business process reengineering module for the packet of the same Business Stream of the chain-circuit time delay compensation of process receiving and loss balancing, according to the service identification in packet, data are stored in corresponding exclusive buffer area, after reaching preset condition, the packet in buffer area is recombinated to Business Stream according to bag sequence number, recover original Business Stream.
From the above technical solution of the present invention shows that, multi-service link provided by the present invention distribution and reconstruction unit and method thereof, different business stream to input, according to quality of service requirement, business is classified, survey available link, then sorted traffic flow assignment is sent to different links, and at receiving terminal, pass through time delay, the loss of the different links of compensation, Business Stream is recombinated, thereby recover original Business Stream.The present invention compared with prior art, at transmitting terminal when being traffic assignments channel resource, consider QoS requirement and each downlink channel state information (as bandwidth, time delay, path loss etc.) of business simultaneously, both met the demand of business, can improve again the channel utilization of system;
(1) at receiving terminal, a plurality of links are taken up in order of priority carry out time delay, link load compensates, and has finely reduced the impact of channel on transmission data, has very strong applicability;
(2) at transmitting terminal, for each packet, increase the information such as sign and type of service, in reception, according to bag sequence number, same business data packet is recombinated, can overcome well the out of order problem of parallel transmission, in regrouping process, according to class of service, adjust the business output condition of buffer area simultaneously, solving on the basis of out of order problem, can meet again the time delay demand of business.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the distribution of multi-service link and reconstruction unit.
Fig. 2 is the schematic diagram of business multilink distribution module.
Fig. 3 is the schematic diagram of business multilink recombination module.
Fig. 4 is the realization flow figure of multi-service link distribution method.
Fig. 5 is the realization flow figure of multi-service link reconfiguration method.
Embodiment
In order more to understand technology contents of the present invention, especially exemplified by specific embodiment and coordinate appended graphic being described as follows.
As shown in Figure 1, according to preferred embodiment of the present invention, a kind of multi-service link distribution and reconstruction unit, be applied in the virtual reconstructed network of multilink, this multi-service link distribution and reconstruction unit comprise business multilink distribution module, business multilink transmitter module, business multilink receiver module and business multilink recombination module.With reference to figure 1 and in conjunction with shown in Fig. 2, Fig. 3, being described as follows each module below:
Business multilink distribution module, it is according to the quality of service requirement parameter of incoming traffic stream, according to preset weighting algorithm, business is classified, dissimilar Business Stream is buffered in different queues, and this business multilink distribution module is surveyed available link and link-state information by sending training sequence, then according to type of service and available link circuit resource state by traffic flow assignment to different links.
Business multilink transmitter module, is connected with described business multilink distribution mould signal, for described training sequence and the Business Stream that distributes are sent.
Business multilink receiver module, the training sequence and the Business Stream that for receiving described business multilink transmitter module, send out.
Business multilink recombination module, be connected with described business multilink receiver module signal, the training sequence periodic analysis obtaining according to business multilink receiver module, obtain delay parameter and link load parameter on different links, and with link load parameter, the packet of the same Business Stream through different link transmission is carried out to chain-circuit time delay compensation and link load equilibrium according to described delay parameter, then Business Stream is recombinated, to recover original Business Stream.
Wherein, described business multilink distribution module and business multilink transmitter module are positioned at transmitting terminal, between described business multilink distribution module and business multilink transmitter module, dispose the transmission line of many parallel joins, a transmission lines is wherein surveyed for Link State, the corresponding transmission lines of each link channel, the Business Stream of described input is assigned on different links by described business multilink distribution module, then from corresponding transmission line to described business multilink transmitter module, from link corresponding to this business multilink transmitter module, send.
Described business multilink receiver module and business multilink recombination module are positioned at receiving terminal, between described business multilink receiver module and business multilink recombination module, dispose the transmission line of many parallel joins, a transmission lines wherein obtains for Link State, and the corresponding transmission lines of each link channel, described business multilink receiver module receives data on a plurality of links, then the data that different links received are issued business multilink recombination module from corresponding transmission line, business multilink recombination module carries out time delay to the data that receive, loss balancing and business reorganization, then outgoing traffic flows.
At transmitting terminal, suppose that transmitting terminal has N bar link, the transmission line that has N+1 bar parallel join between business multilink distribution module and business multilink transmitter module, the corresponding transmission lines of each link channel, also have a transmission lines to survey for Link State simultaneously, business datum inlet flow is assigned on different links by business multilink distribution module, then from corresponding transmission line, is input to business multilink transmitter module, and the link corresponding from this module sends.At receiving terminal, accordingly, between business multilink receiver module and business multilink recombination module, also there is the transmission line of N+1 bar parallel join, the corresponding transmission lines of each link channel, also have a transmission lines to obtain for Link State simultaneously, on a plurality of links, receive data, then the data that different links received are issued business multilink recombination module from corresponding transmission line, business multilink recombination module carries out time delay, loss balancing and business reorganization to the data that receive, then outgoing traffic stream.
As shown in Figure 2, described business multilink distribution module comprises available link detecting module, type of service division module and link assignment module, wherein:
Described available link detecting module, by business multilink transmitter module, send probe data packet for surveying current various available links, comprise wireless network (WLAN (wireless local area network), mobile radio communication, satellite network etc.) and wired network (optical fiber, coaxial cable etc.), on available link, by sending training sequence, with auxiliary reception end, analyze the state information of available link, for example, time delay, the error rate, link load, the state informations such as bandwidth, and by the feedback data of receiving terminal, obtain the state information of current available link, and then the state information of available link is submitted to link assignment module.
Described type of service is divided module, different Business Stream for input, according to the quality of service requirement parameter of Business Stream, different business such as speech, video is to the time delay of service and the different requirements of the error rate, according to preset weighting algorithm, Business Stream is divided into different classs of service, for example, be divided into emergence call service, real-time service, non-real time service etc., and set up exclusive buffer queue for each class of service, sorted Business Stream enters corresponding buffer queue products for further and processes.
Described link assignment module, for each class of service preset corresponding Resource Allocation Formula, for example emergence call service has limit priority, preferentially meet its resource requirement, whether the link assignment module constantly buffer queue of each class of service of poll has Business Stream to be sent, if there is Business Stream to be sent, the current available link state information providing according to the class of service of Business Stream and link detection module is traffic flow assignment link circuit resource, in the packet of Business Stream to be sent, add after service identification and bag sequence number traffic flow assignment to different links, then output to described business multilink transmitter module.
Therefore, service signal is input to after business multilink distribution module, first can divide module through type of service it is carried out to service class division, then deposit in corresponding queue, then link assignment module is divided the situation of each queue of module according to type of service and each link-state information that available link detecting module provides is traffic assignments channel resource to be sent, the queue of then business packet being divided module from type of service is taken out, add bag sequence number and service identification, output to business multilink transmitter module Packet Generation is gone out.
As shown in Figure 3, described business multilink recombination module comprises link information acquisition module, chain-circuit time delay compensating module, link load compensating module and business process reengineering module, wherein:
Described link information acquisition module, training sequence on the different links that receive by described business multilink receiver module is analyzed, obtain delay parameter and the link load parameter of different links, then accordingly described delay parameter submitted to chain-circuit time delay compensating module and link load parameter is submitted to link load compensating module, and by feedback channel, described delay parameter and link load parameter being sent to described business multilink transmitter module.
Chain-circuit time delay compensating module, the delay parameter providing according to described link information acquisition module, the packet that same Business Stream is sent through different links carries out corresponding delay compensation, thereby makes Business Stream reach time synchronized.For example, satellite link is due to long transmission distance, and the time needing is long, can, more simultaneously than the more late arrival receiving terminal of data of other link transmission of process that send, therefore just need to time delay wherein be compensated, thereby make Business Stream reach time synchronized.
Link load compensating module, the link load parameter providing according to described link information acquisition module, the packet that the same Business Stream after synchronous is sent through different links carries out corresponding link load compensation.
Business process reengineering module, it arranges exclusive Business Stream buffer area for different classs of service, packet for the same Business Stream that passes through chain-circuit time delay compensation and loss balancing receiving, according to the service identification in packet, data are stored in corresponding buffer area, after reaching preset condition, the packet in buffer area is recombinated to Business Stream according to bag sequence number, recover original Business Stream.
Therefore, receiving terminal is after receiving packet, each chain-circuit time delay parameter and path loss parameter of according to link information acquisition module, providing, priority process chain-circuit time delay compensating module and link load compensating module carry out time delay and supplement and loss balancing, then be input to business process reengineering module, according to the service identification in packet and bag sequence number, same business is recombinated after multi-chain circuit transmission, recover original Business Stream.
With reference to figure 1-3 and in conjunction with shown in Fig. 4-5, the distribution of business multilink and recombination method based on described multi-service link distribution and reconstruction unit realization, be applied to, in the virtual reconstructed network of multilink, comprise the following steps:
Step 1: regularly send training sequence at transmitting terminal and survey each Link State, and the quality of service requirement parameter according to incoming traffic stream is classified to Business Stream, then according to Link State and type of service, carry out link assignment, then by the Business Stream distributing by sending on corresponding link; And
Step 2: according to obtaining each link-state information, the packet receiving is carried out to delay compensation and loss balancing at receiving terminal, then the packet after multiplexing is recombinated by same Business Stream, recovers original Business Stream.
Further, described step 1 comprises the following steps:
S101: available link detection steps, utilize a link detection module to send probe data packet for surveying current various available links, and the link information acquisition module that sends training sequence auxiliary reception end on available link is analyzed the state information of available link, receiving terminal returns to transmitting terminal by feedback channel by the state information of the current available link obtaining, described link detection module and then the state information of available link is submitted to link assignment module;
S102: type of service partiting step, according to the QoS requirement parameter of incoming traffic stream, according to preset weighting algorithm, Business Stream is divided into different classs of service, and set up exclusive buffer queue for each class of service, sorted Business Stream enters corresponding buffer queue and processes with products for further;
S103: link assignment step, utilize a link assignment module constantly the buffer queue of each class of service of poll whether have Business Stream to be sent, if there is Business Stream to be sent, according to preset Resource Allocation Formula, according to the class of service of Business Stream and current available link state information, be traffic flow assignment link circuit resource, and in the packet of Business Stream to be sent, add after service identification and bag sequence number traffic flow assignment to different links; And
S104: Business Stream sends, and the Business Stream distributing is sent.
Further, described step 2 comprises the following steps:
S201: obtain delay parameter and link load parameter, utilize the training sequence on the different links that a link information acquisition module receives receiving terminal to analyze, obtain delay parameter and the link load parameter of different links;
S202: delay compensation step, utilize the packet of a chain-circuit time delay compensating module to the different link transmission of same Business Stream process that receive, the delay parameter providing according to the link information acquisition module of receiving terminal carries out corresponding delay compensation, thereby makes Business Stream reach time synchronized;
S203: link load compensation process, utilize the packet of a link load compensating module to the different link transmission of same Business Stream process after synchronous, the link load parameter providing according to the link information acquisition module of receiving terminal is carried out corresponding loss balancing; And
S204: business process reengineering step, utilize a business process reengineering module for the packet of the same Business Stream of the chain-circuit time delay compensation of process receiving and loss balancing, according to the service identification in packet, data are stored in corresponding exclusive buffer area, after reaching preset condition, the packet in buffer area is recombinated to Business Stream according to bag sequence number, recover original Business Stream.
From the above technical solution of the present invention shows that, multi-service link provided by the present invention distribution and reconstruction unit and method thereof, different business stream to input, according to quality of service requirement, business is classified, survey available link, then sorted traffic flow assignment is sent to different links, and at receiving terminal, pass through time delay, the loss of the different links of compensation, Business Stream is recombinated, thereby recover original Business Stream.The present invention compared with prior art, at transmitting terminal when being traffic assignments channel resource, consider QoS requirement and each downlink channel state information (as bandwidth, time delay, path loss etc.) of business simultaneously, both met the demand of business, can improve again the channel utilization of system;
(1) at receiving terminal, a plurality of links are taken up in order of priority carry out time delay, link load compensates, and has finely reduced the impact of channel on transmission data, has very strong applicability;
(2) at transmitting terminal, for each packet, increase the information such as sign and type of service, in reception, according to bag sequence number, same business data packet is recombinated, can overcome well the out of order problem of parallel transmission, in regrouping process, according to class of service, adjust the business output condition of buffer area simultaneously, solving on the basis of out of order problem, can meet again the time delay demand of business.
Although the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on claims person of defining.
Claims (6)
1. the distribution of multi-service link and a reconstruction unit, be applied to, in the virtual reconstructed network of multilink, it is characterized in that, this multi-service link distribution and reconstruction unit comprise:
Business multilink distribution module, it is according to the quality of service requirement parameter of incoming traffic stream, according to preset weighting algorithm, business is classified, dissimilar Business Stream is buffered in different queues, and this business multilink distribution module is surveyed available link and link-state information by sending training sequence, then according to type of service and available link circuit resource state by traffic flow assignment to different links;
Business multilink transmitter module, is connected with described business multilink distribution mould signal, for described training sequence and the Business Stream that distributes are sent;
Business multilink receiver module, the training sequence and the Business Stream that for receiving described business multilink transmitter module, send out;
Business multilink recombination module, be connected with described business multilink receiver module signal, the training sequence periodic analysis obtaining according to business multilink receiver module, obtain delay parameter and link load parameter on different links, and with link load parameter, the packet of the same Business Stream through different link transmission is carried out to chain-circuit time delay compensation and link load equilibrium according to described delay parameter, then Business Stream is recombinated, to recover original Business Stream;
Wherein, described business multilink distribution module and business multilink transmitter module are positioned at transmitting terminal, between described business multilink distribution module and business multilink transmitter module, dispose the transmission line of many parallel joins, a transmission lines is wherein surveyed for Link State, the corresponding transmission lines of each link channel, the Business Stream of described input is assigned on different links by described business multilink distribution module, then from corresponding transmission line to described business multilink transmitter module, from link corresponding to this business multilink transmitter module, send,
Described business multilink receiver module and business multilink recombination module are positioned at receiving terminal, between described business multilink receiver module and business multilink recombination module, dispose the transmission line of many parallel joins, a transmission lines wherein obtains for Link State, and the corresponding transmission lines of each link channel, described business multilink receiver module receives data on a plurality of links, then the data that different links received are issued business multilink recombination module from corresponding transmission line, business multilink recombination module carries out time delay to the data that receive, loss balancing and business reorganization, then outgoing traffic flows.
2. multi-service link distribution according to claim 1 and reconstruction unit, is characterized in that, described business multilink distribution module comprises available link detecting module, type of service division module and link assignment module, wherein:
Described available link detecting module, by business multilink transmitter module, send probe data packet for surveying current various available links, on available link, by sending training sequence, with auxiliary reception end, analyze the state information of available link, and by the feedback data of receiving terminal, obtain the state information of current available link, and then the state information of available link is submitted to link assignment module;
Described type of service is divided module, different Business Stream for input, according to the quality of service requirement parameter of Business Stream, according to preset weighting algorithm, Business Stream is divided into different classs of service, and set up exclusive buffer queue for each class of service, sorted Business Stream enters corresponding buffer queue products for further and processes;
Described link assignment module, for each class of service preset corresponding Resource Allocation Formula, whether the link assignment module constantly buffer queue of each class of service of poll has Business Stream to be sent, if there is Business Stream to be sent, the current available link state information providing according to the class of service of Business Stream and link detection module is traffic flow assignment link circuit resource, in the packet of Business Stream to be sent, add after service identification and bag sequence number traffic flow assignment to different links, then output to described business multilink transmitter module.
3. multi-service link according to claim 1 is distributed and reconstruction unit, it is characterized in that, described business multilink recombination module comprises link information acquisition module, chain-circuit time delay compensating module, link load compensating module and business process reengineering module, wherein:
Described link information acquisition module, training sequence on the different links that receive by described business multilink receiver module is analyzed, obtain delay parameter and the link load parameter of different links, then accordingly described delay parameter submitted to chain-circuit time delay compensating module and link load parameter is submitted to link load compensating module, and by feedback channel, described delay parameter and link load parameter being sent to described business multilink transmitter module;
Chain-circuit time delay compensating module, the delay parameter providing according to described link information acquisition module, the packet that same Business Stream is sent through different links carries out corresponding delay compensation, thereby makes Business Stream reach time synchronized;
Link load compensating module, the link load parameter providing according to described link information acquisition module, the packet that the same Business Stream after synchronous is sent through different links carries out corresponding link load compensation;
Business process reengineering module, it arranges exclusive Business Stream buffer area for different classs of service, packet for the same Business Stream that passes through chain-circuit time delay compensation and loss balancing receiving, according to the service identification in packet, data are stored in corresponding buffer area, after reaching preset condition, the packet in buffer area is recombinated to Business Stream according to bag sequence number, recover original Business Stream.
4. the distribution of business multilink and the recombination method based on the distribution of multi-service link and reconstruction unit described in claim 1, realized, be applied to, in the virtual reconstructed network of multilink, it is characterized in that, comprises the following steps:
Step 1: regularly send training sequence at transmitting terminal and survey each Link State, and the quality of service requirement parameter according to incoming traffic stream is classified to Business Stream, then according to Link State and type of service, carry out link assignment, then by the Business Stream distributing by sending on corresponding link; And
Step 2: according to obtaining each link-state information, the packet receiving is carried out to delay compensation and loss balancing at receiving terminal, then the packet after multiplexing is recombinated by same Business Stream, recovers original Business Stream.
5. business multilink distribution according to claim 4 and recombination method, is characterized in that, described step 1 comprises the following steps:
S101: available link detection steps, utilize a link detection module to send probe data packet for surveying current various available links, and the link information acquisition module that sends training sequence auxiliary reception end on available link is analyzed the state information of available link, receiving terminal returns to transmitting terminal by feedback channel by the state information of the current available link obtaining, described link detection module and then the state information of available link is submitted to link assignment module;
S102: type of service partiting step, according to the QoS requirement parameter of incoming traffic stream, according to preset weighting algorithm, Business Stream is divided into different classs of service, and set up exclusive buffer queue for each class of service, sorted Business Stream enters corresponding buffer queue and processes with products for further;
S103: link assignment step, utilize a link assignment module constantly the buffer queue of each class of service of poll whether have Business Stream to be sent, if there is Business Stream to be sent, according to preset Resource Allocation Formula, according to the class of service of Business Stream and current available link state information, be traffic flow assignment link circuit resource, and in the packet of Business Stream to be sent, add after service identification and bag sequence number traffic flow assignment to different links; And
S104: Business Stream sends, and the Business Stream distributing is sent.
6. business multilink distribution according to claim 5 and recombination method, is characterized in that, described step 2 comprises the following steps:
S201: obtain delay parameter and link load parameter, utilize the training sequence on the different links that a link information acquisition module receives receiving terminal to analyze, obtain delay parameter and the link load parameter of different links;
S202: delay compensation step, utilize the packet of a chain-circuit time delay compensating module to the different link transmission of same Business Stream process that receive, the delay parameter providing according to the link information acquisition module of receiving terminal carries out corresponding delay compensation, thereby makes Business Stream reach time synchronized;
S203: link load compensation process, utilize the packet of a link load compensating module to the different link transmission of same Business Stream process after synchronous, the link load parameter providing according to the link information acquisition module of receiving terminal is carried out corresponding loss balancing; And
S204: business process reengineering step, utilize a business process reengineering module for the packet of the same Business Stream of the chain-circuit time delay compensation of process receiving and loss balancing, according to the service identification in packet, data are stored in corresponding exclusive buffer area, after reaching preset condition, the packet in buffer area is recombinated to Business Stream according to bag sequence number, recover original Business Stream.
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