CN105792289A - Data transmission method, related node, and system - Google Patents

Abstract

Embodiments of the present invention provide a data transmission method, a related node, and a system. The method comprises the steps of: when an application data stream in a control node and a network interface through which the application data stream is sent needs to be matched, determining an indication value of a preset network indicator and an indication value indicating QoS of an application of the application data stream, wherein the preset network indicator comprises: an indicator indicating network interface performance and/or an indicator indicating a network status of a network corresponding to the network interface; determining the matching application data stream and network interface according to the indication value of the preset network indicator and the indication value indicating QoS of the application of the application data stream; and transmitting the application data stream matching the determined network interface through the determined network interface. The use efficiency of a wireless network is improved. The present invention relates to the technical field of mobile communication.

Description

A kind of data transmission method, interdependent node and system

Technical field

The present invention relates to mobile communication technology field, particularly relate to a kind of data transmission method, interdependent node and system.

Background technology

In prior art, terminal is generally accessible multiple different wireless network (such as: WLAN (WLAN, WirelessLocalAreaNetwork), TD SDMA (TD-SCDMA, TimeDivision-SynchronousCodeDivisionMultipleAccess), TD-SCDMA Long Term Evolution (TD-LTE, TD-LongTermEvolution), there is the interface corresponding with multiple heterogeneous networks.When terminal is in the region that multiple wireless network nested type overlap covers, it is usually present multiple available stable wireless network to connect, as shown in Figure 1, wireless access technology (RAT, RadioAcessTechnology) 1 access point (AP, AccessPoint) and RAT2AP be the access point of heterogeneous wireless network, the coverage of RAT1AP and the overlapped coverage of RAT2AP, terminal is in overlapping coverage, it is possible to sets up network with RAT1AP and RAT2AP respectively and is connected.

But, in prior art, when there is multiple wireless network that can access, operating system in terminal is generally selected one of them wireless network wireless network by default, all of business datum sends each through this acquiescence wireless network and receives, thus cause when this wireless network breaks down or during hydraulic performance decline, it is impossible to ensure the transmission of business datum, the service efficiency of wireless network of reduction.

Summary of the invention

Embodiments provide a kind of data transmission method, interdependent node and system, carry out business data transmission, the problem that wireless network service efficiency is low in order to solve only use acquiescence wireless network in prior art.

Based on the problems referred to above, a kind of data transmission method that the embodiment of the present invention provides, including:

When the network interface that the application data stream needed for controlling in node and transmission application data stream pass through mates, it is determined that preset the desired value of network index and characterize the desired value of the index of the QoS of application belonging to application data stream,

Wherein, described default network index includes: the index of the index characterizing network interface performance and/or the network state characterizing network interface map network；

The desired value of the QoS index of application belonging to desired value according to described default network index and described sign application data stream, it is determined that the application data stream of coupling and network interface；

The matching relationship of the application data stream determined and network interface is sent to controlled node, and the network interface being determined by transmits, with described controlled node, the application data stream mated with the described network interface determined.

A kind of data transmission method that the embodiment of the present invention provides, including:

Receive the matching relationship of application data stream and the network interface controlling the renewal that node sends；

By the application data stream that the network interface transfers updated mates with described network interface.

The one that the embodiment of the present invention provides controls node, including:

Desired value determines module, for when the network interface that the application data stream needed for controlling in node and transmission application data stream pass through mates, determine the desired value of default network index and characterize the desired value of the index of the QoS of application belonging to application data stream

Wherein, described default network index includes: the index of the index characterizing network interface performance and/or the network state characterizing network interface map network；

Matching relationship determines module, the desired value of the QoS index of application belonging to the desired value according to described default network index and described sign application data stream, it is determined that the application data stream of coupling and network interface；

Data transmission module, for the matching relationship of the application data stream determined and network interface is sent to controlled node, and the network interface being determined by transmits, with described controlled node, the application data stream mated with the described network interface determined.

A kind of controlled node that the embodiment of the present invention provides, including:

Signaling receiver module, for receiving the matching relationship of application data stream and the network interface controlling the renewal that node sends；

Business data transmission module, for the application data stream that the network interface transfers by updating mates with described network interface.

A kind of data transmission system that the embodiment of the present invention provides, including: above-mentioned control node, and above-mentioned controlled node.

The beneficial effect of the embodiment of the present invention includes:

A kind of data transmission method, interdependent node and the system that the embodiment of the present invention provides, when the network interface that the application data stream needed for controlling in node and transmission application data stream pass through mates, determine the desired value of default network index and characterize the service quality (QoS of application belonging to application data stream, the desired value of index QualityofService), wherein, default network index includes: the index of the index characterizing network interface performance and/or the network state characterizing network interface map network；Desired value according to default network index and characterize the desired value of the QoS index of application belonging to application data stream, it is determined that the application data stream of coupling and network interface；The application data stream that the network interface transfers being determined by mates with the network interface determined.When there is multiple wireless network that can access, controlling node can according to the state of current network interface and network, the Qos index of application, for needing the application data stream sent to mate suitable network interface, the corresponding relation of the application data stream of the coupling of renewal and network interface is sent to controlled node, and transmit, with controlled node, the application data stream mated with this network interface by network interface, the data stream of application all with prior art each through acquiescence wireless network transmissions compared with, according to actual needs for the network interface of application coupling correspondence, the service efficiency of the wireless network improved.

Accompanying drawing explanation

The scene schematic diagram that the heterogeneous radio access networks network nested type overlap that Fig. 1 provides for background of invention covers；

Fig. 2 is applied to control the flow chart of node side for a kind of data transmission method that the embodiment of the present invention provides；

Fig. 3 is applied to the flow chart of controlled node side for a kind of data transmission method that the embodiment of the present invention provides；

Fig. 4 is applied to control the flow chart of node side for a kind of data transmission method that the embodiment of the present invention 1 provides；

The data transmission method that Fig. 5 provides for the embodiment of the present invention 1 is determined each network interface application data stream whether can flow chart；

More new information FBU message format schematic diagram is mated in the stream switching that Fig. 6 provides for the embodiment of the present invention；

In the data transmission method that Fig. 7 provides for the embodiment of the present invention 1, network interface by mating sends the flow chart of application data stream needing to send；

Application data stream is sent to the flow chart of application belonging to application data stream by the data transmission method that Fig. 8 provides for the embodiment of the present invention 1；

Fig. 9 is applied to the flow chart of controlled node side for a kind of data transmission method that the embodiment of the present invention 2 provides；

The structural representation of a kind of data transmission system that Figure 10 provides for the embodiment of the present invention；

The data transmission method that Figure 11 provides for adopting the embodiment of the present invention, controls to carry out data transmission schematic diagram between node and controlled node；

A kind of structural representation controlling node that Figure 12 provides for the embodiment of the present invention；

The structural representation of a kind of controlled node that Figure 13 provides for the embodiment of the present invention.

Detailed description of the invention

Embodiments provide a kind of data transmission method, interdependent node and system, below in conjunction with Figure of description, the preferred embodiments of the present invention are illustrated, should be appreciated that preferred embodiment described herein is merely to illustrate and explains the present invention, be not intended to limit the present invention.And when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.

The embodiment of the present invention provides a kind of data transmission method, is applied to control node side, as in figure 2 it is shown, include:

S201, when the application data stream needed for controlling in node and send the network interface that application data stream passes through mate time, it is determined that the desired value of the desired value presetting network index and the index characterizing the QoS applied belonging to application data stream,

Wherein, default network index includes: the index of the index characterizing network interface performance and/or the network state characterizing network interface map network.

S202, according to the desired value of the default network index determined in S201 and characterize the desired value of the QoS index of application belonging to application data stream, it is determined that the application data stream of coupling and network interface.

S203, the application data stream of renewal and the matching relationship of network interface are sent to controlled node, and the network interface being determined by transmits, with described controlled node, the application data stream mated with this network interface.

Corresponding with method shown in above-mentioned Fig. 2, the embodiment of the present invention also provides for a kind of data transmission method, is applied to controlled node side, as it is shown on figure 3, include:

S301, reception control the application data stream of the renewal that node sends and the matching relationship of network interface.

S302, the application data stream mated with this network interface by the network interface transfers of the renewal of reception in S301.

Further, in the embodiment of the present invention, by control node need the application data stream being to control in node and send the network interface that application data stream passes through mate time, update and control the matching relationship of network interface and application data stream in node, and the matching relationship of renewal is sent to controlled node, control node and controlled node and carry out the transmission of application data stream according to the matching relationship updated.

Further, in Multi net voting nesting overlap covering scene, it is usually present multiple simultaneously available stable wave point, the determination application data stream that the embodiment of the present invention can be provided and the matching relationship of network interface, and the mechanism of the application data stream mated by network interface transfers is called data flow handoff mechanism, data flow handoff mechanism provided by the invention ensures that high-rise each application data stream is always assigned on the network interface mated most and is transmitted；When network state or wireless chaining status change, data flow handoff mechanism carries out the matching operation again of application data stream under ensureing the continual premise of application data stream.

Further, the embodiment of the present invention assume that and is pre-existing in following premise: support Internet Protocol version 6 (IPv6, InternetProtocolversion6) and movement (Mobile) the IPv6 agreement of extension thereof as the mobile node and network entity that control node or controlled node；Possess a plurality of wireless network as the mobile terminal controlling node or controlled node in network overlapped overlay area to connect, when certain wave point detects the corresponding network coverage, the functions such as wireless network attachment, access, certification and address configuration can be automatically performed；The detection to multiple access ability and performance aware ability is possessed, in order to assist Internet to carry out judgement and the control of soft handover as the multimode mobile node controlling node or controlled node；There is special application programming interface (API, ApplicationProgrammingInterface) in application layer business function, is used for noticing its demand to qos parameter to correlation module.

Below in conjunction with accompanying drawing, with specific embodiment, method provided by the invention and relevant device are described in detail.

Embodiment 1:

In the embodiment of the present invention 1, it is provided that a kind of data transmission method, it is applied to control node side, as shown in Figure 4, specifically includes following steps:

S401, when the application data stream needed for controlling in node and send the network interface that application data stream passes through mate time, it is determined that the desired value of the desired value presetting network index and the index characterizing the QoS applied belonging to application data stream,

Wherein, default network index includes: the index of the index characterizing network interface performance and/or the network state characterizing network interface map network.

Further, characterize the index of the QoS of application belonging to application data stream and can include the one or more of following index: band merit, shake index, time delay index and packet loss index；The index characterizing network interface performance can include the one or more of following index: interface attributes index, message queue size to be sent index, time delay index and throughput index；The index of the network state characterizing network interface map network can include the one or more of following index: present load index, maximum access capability index, current sessions quantitative index, handling capacity index.

That is, application can determine the QoS demand (being embodied by the desired value of QoS index) of the application data stream of transmission self according to the character of the business of self and demand, controlling node can according to current network state, the namely service condition (being embodied by network interface performance index value) of individual network interface, the state (being embodied by the index of network state) of each network, it is determined for compliance with the network interface of the QoS demand of application data stream, as application data stream and the network interface of coupling.

Further, interface can be reselected for application data stream when network access environment changes, specifically, for the application data stream controlled in node with send the trigger condition that the network interface that application data stream passes through carries out mating and include the either condition in following condition, as shown in table 1:

Condition one: arbitrary network interface becomes from invisible；

Condition two: the desired value of the present load index of arbitrary network is more than default load-threshold value；

Condition three: the signal intensity of arbitrary network is less than corresponding preset signal strength threshold value；

Condition four: start new application.

Table 1

As shown in table 1, for condition one, when arbitrary network interface becomes connecting (Link_up) state from (Link_down) state of disconnection, need to distribute application data stream for this network interface, can trigger and mate application data stream into this network interface, namely whether search current application data stream exist the application data stream with this Interface Matching；

For condition two, as arbitrary network RAN_nThe desired value CurrentLoad (RAN of present load index_n) more than default load-threshold value Load_Th (RAN_n) time, it is necessary to other networks are distributed in the fractional load of this network, it is possible to trigger as this network RAN_nThe application data stream of corresponding network interface current transmission mates other network interfaces again；

For condition three, when the signal intensity of arbitrary network is less than corresponding preset signal strength threshold value, it is believed that the signal of this network dies down (Link_going_down), it is necessary to again mate other network interface for the application data stream of network interface transfers corresponding to this network；

For condition four, when starting new application New_Service, it is necessary to for the network interface of the application data stream of this new application this new application of matching transmission.

Further, the embodiment of the present invention controls node and can refer to the process of application data stream matching operation carries out the node of stream handover decisions and initiation.Owing to being easier to realize the detection to multiple network access capability on multimode mobile node, therefore multimode mobile node can as the control node of network laminar flow handover mechanism, stream switch decision can consider the status informations such as network side load simultaneously, therefore this mechanism can be referred to as stream handover mechanism (mobile terminal for controlling network auxiliary (MCNA, MobileControlledNetworkAssist) of terminal control network assistance.The peer node that controlled node can be generally and multimode mobile node communicates.Controlled node can receive the application data stream of the renewal that controlled node is determined and the matching relationship of network interface, and carry out the redirection operation of application data stream according to the matching relationship updated.The type of controlled node can be fixed host computer or mobile node.

S402, according to pre-set business matching relationship, it is determined that the network type that application belonging to application data stream is corresponding.

Further, when carrying out the coupling of application data stream and network interface, it is necessary to seeking balance between network accessibility and user's QoS demand.According to the research to access technologies typical, it is seen that: traditional Telecommunication operation Network system possesses fairly perfect Access Control and QoS guarantee mechanism, that is once access and permitting, the QoS of its business generally can be ensured (if after accessing permission, user wants to change the QoS demand carrying out business, network and terminal can carry out the flow process of similar Access Control again to confirm whether this request can accept).And some novel wireless access technologys are relatively weak on access control mechanism and QoS security mechanism, such as WLAN (WLAN, the WirelessLocalAreaNetwork) technology supporting focus to cover.The typically not strict restriction access customer number of this system, the service quality of each user is subject to the impact that offered load dynamically changes, therefore, when carrying out the coupling of application data stream and network interface, the performance indications of this access technology should be focused more on, to adjust Data Matching strategy for its change timely, balance the offered load between multiple access system.It is possible to further the character according to different business, pre-save pre-set business matching relationship, as shown in table 2.This matching relationship can be determined in the business customizing stage.

Table 2

Network type	802.11b	GPRS	UMTS
				Business matching relationship	FTP	WWW、Telnet	VoIP、Netmeeting、WWW

nullAs shown in table 2，For file transfer protocol (FTP) (FTP，FileTransferProtocol) business，Preferably can be transmitted by 802.11b network，For WWW (WWW，WorldWideWeb) business，Can preferably by GPRS (general packet radio service) (GPRS，GeneralPacketRadioService) network or UMTS (UMTS，UniversalMobileTelecommunicationsSystem) network is transmitted，For Telnet (Telnet，TelecommunicationsNetwork) business，Can be transmitted preferably by GPRS network，For the networking telephone (VOIP，VoiceOverInternetProtocol)、Web conference (Netmeeting) business，Can be transmitted preferably by UMTS network.

S403, determine that whether the network interface of this network type map network is visible, and determine that whether each desired value of the network state index characterizing this network type map network is no more than predetermined threshold value corresponding respectively；

When the network interface of this network type map network is visible, and each desired value is no more than, when distinguishing corresponding predetermined threshold value, entering step S404；

When the network interface of network type map network is invisible, or when each desired value existing at least one desired value more than corresponding predetermined threshold value, enter step S405.

Further, due to for the demand of different business and character, pre-set business matching relationship is pre-set for application data stream and network interface, in this step, may determine that whether the network interface that this network type is corresponding is visible, if it is visible, then may further determine that the predetermined threshold value whether each desired value characterizing network type network of network state index corresponding to this application is corresponding respectively no more than each index, if no more than, then the application data stream of this application can be transmitted by this network.

Further, the each index characterizing network of network state can have predetermined threshold value corresponding respectively, need when the desired value of each index is no more than each self-corresponding predetermined threshold value, just use this network to transmit the application data stream that this application is corresponding, namely determine that the network interface that this network is corresponding mates with this application data stream.

S404, determine that application data stream and the network interface of network type map network determined match.Enter step S408.

S405, according to controlling the desired value of the default network index of each network in node, and characterize the desired value of the index of the QoS of application belonging to application data stream, it is determined that in each network of network interface to this application data stream can network interface.

Further, it is generally the case that the parameter of the QoS demand parameter of higher layer applications and the interface status information of bottom has certain relatedness, but its parameter meaning and value do not possess comparability.The QoS demand parameter of higher layer applications generally reflects the applied business requirement to end-to-end transmission performance, and Interface status parameter only reflects the correlated performance on wave point, and certain parameter value of higher layer applications would generally be subject to the impact of bottom different kinds of parameters.Therefore, before carrying out data stream matches according to these parameters of higher layer applications, it is necessary to carry out the mapping of the qos parameter of interlayer, the performance indications of physical layer interface it are mapped to by each QoS index of higher layer applications.

Further, belonging to application data stream, the index of the QoS of application is that the aspect for application layer is determined, and control what the default network index of each network in node was usually determined for the aspect of Internet, so, the QoS index by application layer aspect is needed to be mapped as the default network index of Internet aspect, further according to the desired value of the index after mapping, the default network index value having with current network is compared, it is determined whether there is network and disclosure satisfy that the QoS demand of application layer.

Further, as shown in Figure 5, it is possible to determine whether each network interface application data stream can be used in the following way:

S501, it is mapped as default network index by characterizing the index of the QoS of application belonging to application data stream, it is determined that the desired value of the default network index after the mapping that the index of the QoS of application belonging to application data stream obtains after being mapped as default network index will be characterized.

S502, determine in each network interface, preset the network interface of the desired value of corresponding index in the default network index after the desired value of network index disclosure satisfy that mapping.

S503, the network interface determined in S502 is defined as the network interface that application data stream is available.

S406, desired value according to the default network index of the available network interface map network determined in S405, it is determined that the availability of available network interface.

Further, step S405 can determine that multiple available network interface, then, it is also possible to determine the availability of each using network interface.

Specifically, the desired value according to the default network index of available network interface map network, it is possible to determined the availability of current each available network by equation below:

Q_usability(I_n)=Q_usability(RAN_n)*Q_usability(L_n) formula (1)

Wherein:

$Q_{\mathrm{usability}}\left({\mathrm{RAN}}_n\right)=\underset{i=1}{\overset{A}{\mathrm{\Π}}}|\mathrm{Load}\_\mathrm{Th}\left(L_n^i\right)/\mathrm{Current}\_\mathrm{Load}\left(L_n^i\right)|;$ Formula (2)

$Q_{\mathrm{usability}}\left(L_n\right)=\underset{i=1}{\overset{B}{\mathrm{\Π}}}|\mathrm{Th}\_\mathrm{Value}\left(U_n^i\right)/\mathrm{Current}\_\mathrm{Value}\left(U_n^i\right)|;$ Formula (3)

{RAN₁,RAN₂,...,RAN_n,...,RAN_NThe N number of different network that exists in characterization control node, { I₁,I₂,...,I_n,...,I_NCharacterize the network interface that described N number of different network is corresponding respectively, { L₁,L₂,...,L_n,...,L_NCharacterize the link that described N number of different network interface is corresponding respectively,Characterize the desired value of A the index characterizing network state of each network,Characterize the default load-threshold value of a index in A the index characterizing network state, wherein, a > 1 and a < A,Characterize B the desired value characterizing network interface performance of each network interface,Characterize the predetermined threshold value of b index in B the index characterizing network interface performance, wherein, b > 1 and b < B.

Further, it is assumed that multiple access controls there is several (N number of) xenogenesis S-RAN networks in node, is expressed as { RAN₁,RAN₂,...,RAN_n,...,RAN_N, weigh certain Access Network RAN_nThe index set of current network state is $\mathrm{CriterionSet}\left({\mathrm{RAN}}_n\right)=\{L_n^1,...,L_n^a,...,L_n^A\},$ And arbitrary parameterCurrency beIts predetermined threshold value isExceed this pre-determined threshold, the access in the network of new application data stream will be refused；

Assume each network and control there is presupposed information interactive mode between node so that controlling node and will appreciate that the dynamic network state of each network and corresponding pre-determined threshold.Such as its dynamic network status information and corresponding predetermined threshold value can be broadcasted by each network, control node by comparing the current network state of each network and corresponding pre-determined threshold and judge that whether the network capacity of correspondence is saturated；

Assume that controlling there is several (N number of) xenogenesis on node accesses network interface card, it is possible to be expressed as IFSet={I₁,I₂,...,I_n,...,I_N, the current visible network interface of node that controls integrates as Available_IFSet, then

Assume certain interface I_nCorresponding wireless link is L_n, weigh this link L_nThe set of interface capability index is $\mathrm{CriterionSet}\left(L_n\right)=\{U_n^1,...U_n^b,...,U_n^B\},$ If arbitrary parameterCurrency beIts predetermined threshold value isExceed this thresholding, then network interface is currently down state.

Further, when carrying out application data stream and network interface coupling, it is necessary to consider the network state of current radio access network RAN and the duty of network interface, it is possible to recorded the result of docking port Performance Evaluation by table 3.This list item comprises two assessment results: whether the value of interface availability and interface is visible.

Table 3

Network type	802.11b	GPRS	UMTS
				Whether visible	1	1	1
Currently available degree	6/10	0/10	8/10

Due to the one-to-one relationship that wireless interface card and Radio Access Network exist, if the wireless network overload that wave point is corresponding, then this interface is also not suitable for as candidate's usable interface.Therefore, it can also serve as the network state index of RAN the approve-useful index of wireless interface card.Interface capability index according to RAN network state index and radio network interface, the availability Q of definition network interface_usability(I_n), it is used for evaluating the degree that certain access link is suitable for using, and, as shown in formula (1), the availability of network interface is by network state index Q_usability(RAN_n) and network interface performance indications Q_usability(L_n) determine, as shown in formula (2), current each network state desired value is more little, the Q obtained_usability(RAN_n) more big, for instance, in network state index, present load is more little, the more few Q obtained of current sessions quantity_usability(RAN_n) more big, in like manner, current each network interface performance index value is more little, the Q obtained_usability(RAN_n) more big, for instance, in network interface performance indications, message queue size to be sent is more short, time delay is more short, the Q obtained_usability(L_n) more big.And Q_usability(RAN_n) and Q_usability(L_n) product determine the availability of network interface, the more big availability of product is more big, and the more little then availability of product is more little.

For the ease of comparing the availability index between heterogeneous networks interface, the availability of heterogeneous networks interface finally requires over normalization operation, is converted to the value from 0 to 1.Except the availability of network interface, also need to record this network interface current whether visible.This record can be maintained by bottom trigger mechanism, if receiving certain network interface Link_down to trigger message, then shows the drop of this network interface, and putting its flag bit is 0；It is visible that Link_up triggers message map network interface, and putting its flag bit is 1.For the assessment result of each network as shown in table 3, according to the availability after various network normalization, it is determined that the availability of UMTS network is the highest.

S407, network interface the highest for availability in the available network interface determined in S406 is defined as the network interface that mates with application data stream.

S408, the matching relationship of the application data stream determined and network interface is sent to controlled node.

It is possible to further the matching relationship determined is sent to controlled node by existing message, it is also possible to define new message and the matching relationship determined is sent to controlled node.

Operating it is possible to further mate, by stream switching, the redirection that more new information (FBU, FlowhandoverBindingUpdate) completes data stream to the matching relationship that controlled node transmission is determined, the definition of FBU can be such that

FBU message=ipv6 header+movement header (MobilityHeader)

The FBU message format schematic diagram that Fig. 6 provides for the embodiment of the present invention, the expansion of MobilityHeader is embodied in two aspects by FBU message, as shown in Fig. 6 dash area, first, and FBU extension of message one flag bit of MobilityHeader, it is defined as F.F=1 illustrates that this message is FBU message.Secondly, define FBUMobility option (Option), this Option type (Type) is 10, characterize this FBU message contains and control all application data stream ID (FlowID) being used as stream matching transmission that node is determined and the network interface conversion address (CoA mated, CareofAddress) matching relationship pair, for instance: FlowID1 and CoA1 mates, and FlowID2 and CoA2 mates, ..., FlowIDn and CoAn coupling etc..The number of matching relationship pair and corresponding relation are determined by controlling node.The length (Length) of this FBU message is determined by the number of FlowID and CoA matching relationship pair.Flownum characterizes the quantity of the matching relationship pair carried in FBU message, and Reserved is reserved field.4rows is optional in FBU message, characterizes the form of CoA or source address, destination address.

Further, in order to make network layer data stream handover mechanism have universal, controlled node can only support common MobileIP agreement, and does not support that the data flow handoff that the embodiment of the present invention provides is machine-processed.Whether control node props up data according to controlled node is held stream handover mechanism, can treat with a certain discrimination when sending FBU message to controlled node.If controlled node supports data flow handoff mechanism, then can send specifically defined stream switching and mate more new information FBU.When there is a plurality of data cube computation when between controlled node and control node, different data stream can be navigated on different network interfaces by this FBU；If controlled node does not support stream handoff functionality, then sending common network layer address binding message, data stream all of between node can be navigated on the network interface specified by this message.Therefore, need the terminal capability detection flow process of definition standard between terminal node, determine the controlled node support situation to special handover operation.

S409, when needs send application data stream time, the matching relationship according to network interface Yu application data stream, it would be desirable to the application data stream of transmission by coupling network interface send.

Further, as it is shown in fig. 7, this step can be specifically embodied as:

S701, when needs send application data stream, the matching relationship according to network interface Yu application data stream, it is determined that with the network interface that mates of application data stream needing transmission.

S702, for constitute application data stream packet, the home address HoA of the source address as this packet is saved in the preset field of this packet.

S703, the Care-of Address CoA of the network interface determined being defined as the source address of this packet, this packet is sent by the network interface being determined by.

nullFurther，The data flow handoff mechanism that the embodiment of the present invention provides is to carry out on the basis of basic MobileIP，It it is the extension of basic MobileIP，The destination address of the packet therefore issued from high level is the home address (HoA controlling node，HomeofAddress)，And all packets mailing to controlled node can be filtered at Internet entrance，And the matching result according to application data stream Yu network interface，By the stream label (FlowLabel) in this packet transport layer port number or standard IPv6 head，Determine the Care-of Address (CoA that application data stream corresponding to this packet is corresponding，Careofaddress) (network interface) address，And the HoA address of packet is placed into IP extension header as destination's option，In IPv6 head, destination address is replaced by the network interface CoA address of this data stream binding.Packet after process is reentered into IP routing module.Different data streams is routed to according to CoA address on it and controls on the interface that node is corresponding.Process that data are carried out by receiving terminal and transmitting terminal contrast, with the destination address in the HoA address replacement data in destination's option, and remove destination's option, and the packet after process is sent to upper layer protocol module.

Therefore, as long as the purpose IP address of application data stream is replaced with to the CoA address of application data stream matching network interface.From the packet process at transmitting terminal and receiving terminal, the data flow handoff mechanism of the Internet that the embodiment of the present invention provides is sightless for upper layer protocol module.

S410, when by network interface receive described network interface coupling application data stream time, application data stream is sent to the application belonging to this application data stream.

Further, as shown in Figure 8, this step can be specifically embodied as:

S801, when being received the application data stream of this network interface coupling by network interface, for the packet constituting application data stream, use the HoA that preset field in this packet preserves to replace the CoA as this packet rs destination address.

S802, send the packet to the application belonging to application data stream.

Further, in S801, during owing to sending packet, HoA is saved in the preset field (such as: the extension header of packet) of packet by Internet, uses CoA to replace HoA and sends the packet within, application layer is also unaware of, therefore, when Internet receives reply packet, for the ease of the reply packet of application layer identification self, from preset field, HoA can be obtained, the destination address (CoA) replying packet be replaced to HoA and is then forwarded to application layer.

Further, when the embodiment of the present invention being application data stream matching network interface, it is carry out the network interface for application data stream coupling transmission application data stream according to network of network state each in this control node, network interface performance, and controlled node is as Correspondent Node, the state of network interface also can affect the transmission of application data stream, therefore, the embodiment of the present invention can also comprise the steps:

The desired value of the index of the network interface performance characterizing controlled node that step one, reception controlled node send.

Step 2, according in step one receive desired value, determine in controlled node for receiving the network interface of application data stream for application data stream.

That is, the network interface performance of each network interface self included can also be measured in controlled node side, and the desired value of each index characterizing network interface performance obtained is sent to control node, control node when sending application data stream, the purpose network interface being suitable for receiving application data stream can be determined according to the desired value of each index characterizing network interface performance of controlled node, and the local terminal being determined by out is for sending the network interface of application data stream and Correspondent Node for receiving the network interface of application data stream, is sent by application data stream.

Further, step S408, step S409, step S410 execution there is no strict sequencing.

Embodiment 2:

With the embodiment of the present invention 1 correspondingly, in the embodiment of the present invention 2, it is provided that a kind of data transmission method, it is applied to controlled node side, as it is shown in figure 9, specifically include following steps:

S901, reception control the application data stream of the renewal that node sends and the matching relationship of network interface.

Further, in this step, controlled node can receive and control the FBU message that node sends, and after receiving FBU message, binding management list item can be updated according to the corresponding relation of application data stream and network interface address in FBU message, and be transmitted according to current entry content application data stream or receive.

Further, the stream hand off signaling controlling node controls the routed path of downlink (data received) data stream, controlled node realizes the triage operator of application data stream by common routing mechanism, as long as the purpose IP address of application data stream replaces with the CoA address specifying network interface.

S902, when needs send application data stream, the matching relationship according to the network interface and the application data stream that update, it would be desirable to the application data stream of transmission is sent by the network interface of coupling.

Further, the detailed description of the invention of this step may refer to step S409, repeats no more here.

S903, when by network interface receive this network interface coupling application data stream time, application data stream is sent to the application belonging to application data stream.

Further, the detailed description of the invention of this step may refer to step S410, repeats no more here.

S904, determine the desired value of index of the network interface performance characterizing controlled node.

Further, the index characterizing network interface performance can include the one or more of following index: interface attributes index, message queue size to be sent index, time delay index and throughput index.

S905, the desired value determined in S904 is sent to control node.

Further, the execution of step S904～step S905 does not have strict sequencing with the execution of step S901～step S903.

nullFurther，In conjunction with the embodiments 1 and embodiment 2，The embodiment of the present invention provides a kind of data transmission system，As shown in Figure 10，Control node to include: flow control module 1001、Data filtering/diverter module 1002、Data processing module 1003、High-rise module 1004、Mobile IP v 6 (the E-MIPv6 strengthened，Enhanced-MobileIPv6) module 1005、Candidate access router discovery/router advertisement finger daemon (CARD/RADVD，CandidateAccessRouterDiscovery/RouterAdvertisementDaemon) module 1006，Controlled node includes: flow control module 1007、Data filtering/diverter module 1008、Data processing module 1009、High-rise module 1010、E-MIPv6 module 1011.

The data flow control mechanism that the embodiment of the present invention provides is concentrated mainly on control node, control flow control module 1001 in node, the collection to network of network interface capability information each in terminal is managed (wherein by Interface status, interface capability mainly includes attribute information and the multidate information of interface, attribute information is interface type, bandwidth etc. such as, and multidate information is queue length, time delay, handling capacity etc. such as)；The each network of network state in terminal is received by CARD/RADVD module 1006, for instance, it is possible to CARD/RADVD module 1006 is connected with router, collects each network of network status information；In control node, from the network state information of CARD/RADVD module 1006 acquisition collection, (wherein, network state information refers to the performance information of connected network, such as present load, maximum access capability etc. in the network state management of flow control module 1001.Network state information can pass through the CARD agreement of ietf definition or with the addition of the router advertisement messages acquisition of network state information)；High-rise module 1004 is the application that terminal is on the middle and senior level, the QoS demand of self can be sent to the data stream QoS demand of flow control module 1001 and manage (wherein by high-rise application, higher layer applications QoS information collects the support depending on application layer, by specific application programming interface, its QoS demand information can be sent to flow control module 1001 after application program launching.nullFor not supporting the application program of this function，May refer in 3GPP the classification of applied business and the definition of basic qos parameter)，And the associated arguments that high-rise data stream QoS demand is mapped as bottom is mapped by the interlayer QoS of flow control module 1001，And adjudicated by the coupling of flow control module 1001，According to each network of network state、Network interface performance、The QoS demand of application，For application data stream matching network interface，And the corresponding relation of the application data stream updated after being safeguarded coupling by binding management and network interface，The corresponding relation of the application data stream of renewal and network interface is sent to controlled node as signaling flow by E-MIPv6 module 1005，The corresponding relation of the application data stream updated after coupling and network interface is synchronized to data filtering/diverter module 1002 and data processing module 1003 by flow control module 1001，Make when data filtering/diverter module 1002 receives the application data stream that high-rise module 1004 sends，The destination address (HoA) of application data stream is replaced to the CoA address (CoA1 that the network interface mated with this application data stream is corresponding、CoA2)，And application data stream (upstream) is sent to controlled node，When data processing module 1003 receives application data stream (downstream data flow) that controlled node sends，By the CoA address (CoA1 of application data stream、CoA2) HoA address is replaced with，And it is sent to the high-rise module 1004 of correspondence.

nullFlow control module 1007 in controlled node，The corresponding relation of application data stream and the network interface controlling the renewal that node sends is received by E-MIPv6 module 1011，And by the binding management in flow control module 1007 to receive the application data stream of renewal and the corresponding relation of network interface safeguard，The application data stream of renewal and the corresponding relation of network interface are synchronized to data filtering/diverter module 1008 and data processing module 1009 by flow control module 1007，Make when data filtering/diverter module 1008 receives the application data stream that high-rise module 1010 sends，The destination address (HoA) of application data stream is replaced to the CoA address (CoA1 that the network interface mated with this application data stream is corresponding、CoA2)，And application data stream (upstream) is sent to control node，When data processing module 1009 receives application data stream (downstream data flow) controlling node transmission，By the CoA address (CoA1 of application data stream、CoA2) HoA address is replaced with，And it is sent to the high-rise module 1010 of correspondence.

Further, flow control module 1007 in controlled node can be passed through Interface status management and collect the collection to network of network interface capability information each in terminal, and the interface capability information collected is sent to control node by E-MIPv6 module 1011, the network interface performance information receiving controlled node is sent to flow control module 1001 by the E-MIPv6 module 1005 controlling node, coupling in flow control module 1001 is adjudicated when carrying out application data stream and network interface coupling, it may be determined that go out the network interface of the controlled node side of correspondence.

nullFurther，The data transmission method that Figure 11 provides for adopting the embodiment of the present invention，Control to carry out data transmission schematic diagram between node and controlled node，As shown in figure 11，Controlling node is multimode mobile node，Control node and support multiple network，Including: WLAN、UMTS、And global intercommunication microwave access (WiMAX，WorldwideInteroperabilityforMicrowaveAccess)，And control the node network interface CoA1 by three kinds of networks correspondence respectively、CoA2、And CoA3 accesses three kinds of each self-corresponding Access Networks of network，And accessed IP kernel heart net by three kinds of each self-corresponding Access Networks of network，First controlled node is stationary nodes，First controlled node supports 802.3 networks，And by 802.3 network insertion IP kernel heart nets，Second controlled node is mobile node，Second controlled node supports forth generation mobile communication technology (4G，FourthGeneration) network，And access IP kernel heart net by the Access Network of 4G network，So，Control node and can pass through CoA1 and CoA2 the first application data stream mated respectively with CoA1 and CoA2 with the first controlled node transmission respectively and the second application data stream，Control node and can pass through the 3rd application data stream that the transmission of CoA3 and the second controlled node is mated with CoA3.

Based on same inventive concept, the embodiment of the present invention additionally provides a kind of interdependent node and system, owing to the principle of these nodes problem solved with system is similar to aforementioned a kind of data transmission method, therefore the enforcement of this node and system may refer to the enforcement of preceding method, repeats part and repeats no more.

The one that the embodiment of the present invention provides controls node, as shown in figure 12, and including:

Desired value determines module 1201, for when the network interface that the application data stream needed for controlling in node and transmission application data stream pass through mates, determine the desired value of default network index and characterize the desired value of the index of the QoS of application belonging to application data stream

Wherein, described default network index includes: the index of the index characterizing network interface performance and/or the network state characterizing network interface map network；

Matching relationship determines module 1202, the desired value of the QoS index of application belonging to the desired value according to described default network index and described sign application data stream, it is determined that the application data stream of coupling and network interface；

Data transmission module 1203, for the matching relationship of the application data stream determined and network interface is sent to controlled node, and the network interface being determined by transmits, with described controlled node, the application data stream mated with the described network interface determined.

Further, belonging to described sign application data stream, the index of the QoS of application includes the one or more of following index: band merit, shake index, time delay index and packet loss index；

The index of described sign network interface performance includes the one or more of following index: interface attributes index, message queue size to be sent index, time delay index and throughput index；

The index of the network state of described sign network interface map network includes the one or more of following index: present load index, maximum access capability index, current sessions quantitative index, handling capacity index.

Further, described matching relationship determines module 1202, specifically for according to pre-set business matching relationship, it is determined that the network type that application belonging to application data stream is corresponding；Determine that whether the network interface of described network type map network is visible, and determine that each desired value of the network state index characterizing described network type map network is whether no more than predetermined threshold value corresponding respectively；When the network interface of described network type map network is visible, and described each desired value no more than respectively corresponding predetermined threshold value time, it is determined that described application data stream and the network interface of network type map network determined match.

Further, described matching relationship determines module 1202, the network interface being additionally operable to work as described network type map network is invisible, or when described each desired value existing at least one desired value more than corresponding predetermined threshold value, according to the desired value of the default network index of each network in described control node, and the desired value of index of the QoS of application belonging to sign application data stream, it is determined that in described each network of network interface to described application data stream can network interface；The desired value of the default network index according to described available network interface map network, it is determined that the availability of described available network interface；Network interface the highest for availability in described available network interface is defined as the network interface mated with described application data stream.

Further, described matching relationship determines module 1202, specifically for determining whether described each network interface application data stream can be used in the following way:

It is mapped as default network index, it is determined that the desired value of the default network index after the mapping obtained after the index characterizing the QoS applied belonging to application data stream is mapped as default network index by characterizing the index of the QoS of application belonging to application data stream；Determining in described each network interface, the desired value of default network index disclosure satisfy that the network interface of the desired value of corresponding index in the default network index after described mapping；The network interface determined is defined as the network interface that application data stream is available.

Further, described matching relationship determines module 1202, specifically for the desired value of the default network index according to described available network interface map network, is determined the availability of current each available network by equation below:

Q_usability(I_n)=Q_usability(RAN_n)*Q_usability(L_n), wherein,

$Q_{\mathrm{usability}}\left({\mathrm{RAN}}_n\right)=\underset{i=1}{\overset{A}{\mathrm{\&Pi;}}}|\mathrm{Load}\_\mathrm{Th}\left(L_n^i\right)/\mathrm{Current}\_\mathrm{Load}\left(L_n^i\right)|;$ $Q_{\mathrm{usability}}\left(L_n\right)=\underset{i=1}{\overset{B}{\mathrm{\&Pi;}}}|\mathrm{Th}\_\mathrm{Value}\left(U_n^i\right)/\mathrm{Current}\_\mathrm{Value}\left(U_n^i\right)|;$

{RAN₁,RAN₂,...,RAN_n,...,RAN_NThe N number of different network that exists in characterization control node, { I₁,I₂,...,I_n,...,I_NCharacterize the network interface that described N number of different network is corresponding respectively, { L₁,L₂,...,L_n,...,L_NCharacterize the link that described N number of different network interface is corresponding respectively,Characterize the desired value of A the index characterizing network state of each network,Characterize the default load-threshold value of a index in A the index characterizing network state, wherein, a > 1 and a < A,Characterize B the desired value characterizing network interface performance of each network interface,Characterize the predetermined threshold value of b index in B the index characterizing network interface performance, wherein, b > 1 and b < B.

Further, described data transmission module 1203, specifically for when needs send application data stream time, the matching relationship according to network interface Yu application data stream, it would be desirable to the application data stream of transmission by coupling network interface send；When being received the application data stream of described network interface coupling by network interface, described application data stream is sent to the application belonging to described application data stream.

Further, described data transmission module 1203, specifically for when needs send application data stream, the matching relationship according to network interface Yu application data stream, it is determined that with the network interface that mates of application data stream needing transmission；For the packet constituting described application data stream, the home address HoA of the source address as this packet is saved in the preset field of this packet；The Care-of Address CoA of the network interface determined is defined as the source address of this packet, and this packet is sent by the network interface being determined by；When being received the application data stream of described network interface coupling by network interface, described application data stream is sent to the application belonging to described application data stream, specifically include: when being received the application data stream of described network interface coupling by network interface, for the packet constituting described application data stream, the HoA that preset field described in this packet preserves is used to replace the CoA as this packet rs destination address；And send the packet to the application belonging to described application data stream.

Further, described data transmission module 1203, it is additionally operable to receive the desired value of the index of the network interface performance characterizing described controlled node that controlled node sends；

Described matching relationship determines module 1202, is additionally operable to, according to the described desired value received, determine in described controlled node for receiving the network interface of described application data stream for application data stream.

Further, the trigger condition that the network interface passed through for the application data stream in control node and transmission application data stream carries out mating includes the either condition in following condition:

Arbitrary network interface becomes from invisible；

The desired value of the present load index of arbitrary network is more than default load-threshold value；

The signal intensity of arbitrary network is less than corresponding preset signal strength threshold value；

Start new application.

A kind of controlled node that the embodiment of the present invention provides, as shown in figure 13, including:

Signaling receiver module 1301, for receiving the matching relationship of application data stream and the network interface controlling the renewal that node sends；

Business data transmission module 1302, for the application data stream that the network interface transfers by updating mates with described network interface.

Further, described business data transmission module 1302, specifically for when needs send application data stream, the matching relationship according to the network interface and the application data stream that update, it would be desirable to the application data stream of transmission is sent by the network interface of coupling；When being received the application data stream of described network interface coupling by network interface, described application data stream is sent to the application belonging to described application data stream.

Further, described controlled node also comprises determining that module 1303 and signaling sending module 1304；

Described determine module 1303, for determining the desired value of the index of the network interface performance characterizing controlled node；

Described signaling sending module 1304, for being sent to control node by the desired value determined.

A kind of data transmission system that the embodiment of the present invention provides, including: above-mentioned control node, and above-mentioned controlled node.

The function of above-mentioned each unit may correspond to the respective handling step in flow process shown in Fig. 1 to Fig. 4, does not repeat them here.

A kind of data transmission method, interdependent node and the system that the embodiment of the present invention provides, when the network interface that the application data stream needed for controlling in node and transmission application data stream pass through mates, determine the desired value of default network index and characterize the desired value of the index of the QoS of application belonging to application data stream, wherein, default network index includes: the index of the index characterizing network interface performance and/or the network state characterizing network interface map network；Desired value according to default network index and characterize the desired value of the QoS index of application belonging to application data stream, it is determined that the application data stream of coupling and network interface；The application data stream that the network interface transfers being determined by mates with the network interface determined.When there is multiple wireless network that can access, controlling node can according to the state of current network interface and network, the QoS index of application, for needing the application data stream sent to mate suitable network interface, the corresponding relation of the application data stream of the coupling of renewal and network interface is sent to controlled node, and transmit, with controlled node, the application data stream mated with this network interface by network interface, the data stream of application all with prior art each through acquiescence wireless network transmissions compared with, according to actual needs for the network interface of application coupling correspondence, the service efficiency of the wireless network improved.

Through the above description of the embodiments, those skilled in the art is it can be understood that can realize by hardware to the embodiment of the present invention, it is also possible to the mode adding necessary general hardware platform by software realizes.Based on such understanding, the technical scheme of the embodiment of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, including some instructions with so that a computer equipment (can be personal computer, server, or the network equipment etc.) performs the method described in each embodiment of the present invention.

It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module or flow process in accompanying drawing are not necessarily implemented necessary to the present invention.

It will be appreciated by those skilled in the art that the module in the device in embodiment can describe according to embodiment to carry out being distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than in one or more devices of the present embodiment.The module of above-described embodiment can merge into a module, it is also possible to is further split into multiple submodule.

The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.

Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims (27)

1. a data transmission method, it is characterised in that including:

When the network interface that the application data stream needed for controlling in node and transmission application data stream pass through mates, it is determined that preset the desired value of network index and characterize the desired value of the index of the service quality QoS of application belonging to application data stream,

Wherein, described default network index includes: the index of the index characterizing network interface performance and/or the network state characterizing network interface map network；

The desired value of the QoS index of application belonging to desired value according to described default network index and described sign application data stream, it is determined that the application data stream of coupling and network interface；

The matching relationship of the application data stream determined and network interface is sent to controlled node, and the network interface being determined by transmits, with described controlled node, the application data stream mated with the described network interface determined.

2. the method for claim 1, it is characterised in that belonging to described sign application data stream, the index of the QoS of application includes the one or more of following index: band merit, shake index, time delay index and packet loss index；

The index of described sign network interface performance includes the one or more of following index: interface attributes index, message queue size to be sent index, time delay index and throughput index；

The index of the network state of described sign network interface map network includes the one or more of following index: present load index, maximum access capability index, current sessions quantitative index, handling capacity index.

3. method as claimed in claim 1 or 2, it is characterised in that the desired value of the QoS index of application belonging to the desired value of described default network index and described sign application data stream, it is determined that the application data stream of coupling and network interface, specifically includes:

According to pre-set business matching relationship, it is determined that the network type that application belonging to application data stream is corresponding；

Determine that whether the network interface of described network type map network is visible, and

Determine that whether each desired value of the network state index characterizing described network type map network is no more than predetermined threshold value corresponding respectively；

When the network interface of described network type map network is visible, and described each desired value no more than respectively corresponding predetermined threshold value time, it is determined that described application data stream and the network interface of network type map network determined match.

4. method as claimed in claim 3, it is characterised in that when the network interface of described network type map network is invisible, or when described each desired value existing at least one desired value more than corresponding predetermined threshold value, also include:

According to the desired value of the default network index of each network in described control node, and characterize the desired value of the index of the QoS of application belonging to application data stream, it is determined that in described each network of network interface to described application data stream can network interface；

The desired value of the default network index according to described available network interface map network, it is determined that the availability of described available network interface；

Network interface the highest for availability in described available network interface is defined as the network interface mated with described application data stream.

5. method as claimed in claim 4, it is characterised in that determine whether described each network interface application data stream can be used in the following way:

It is mapped as default network index, it is determined that the desired value of the default network index after the mapping obtained after the index characterizing the QoS applied belonging to application data stream is mapped as default network index by characterizing the index of the QoS of application belonging to application data stream；

Determining in described each network interface, the desired value of default network index disclosure satisfy that the network interface of the desired value of corresponding index in the default network index after described mapping；

The network interface determined is defined as the network interface that application data stream is available.

6. method as claimed in claim 4, it is characterised in that the desired value according to the default network index of described available network interface map network, determines the availability of current each available network by equation below:

Q_usability(I_n)=Q_usability(RAN_n)*Q_usability(L_n), wherein,

$Q_{\mathrm{usability}}\left({\mathrm{RAN}}_n\right)=\underset{i=1}{\overset{A}{\mathrm{\&Pi;}}}|\mathrm{Load}\_\mathrm{Th}\left(L_n^i\right)/\mathrm{Current}\_\mathrm{Load}\left(L_n^i\right)|;$

$Q_{\mathrm{usability}}\left(L_n\right)=\underset{i=1}{\overset{B}{\mathrm{\&Pi;}}}|\mathrm{Th}\_\mathrm{Value}\left(U_n^i\right)/\mathrm{Current}\_\mathrm{Value}\left(U_n^i\right)|;$

{RAN₁,RAN₂,...,RAN_n,...,RAN_NThe N number of different network that exists in characterization control node, { I₁,I₂,...,I_n,...,I_NCharacterize the network interface that described N number of different network is corresponding respectively, { L₁,L₂,...,L_n,...,L_NCharacterize the link that described N number of different network interface is corresponding respectively,Characterize the desired value of A the index characterizing network state of each network,Characterize the default load-threshold value of a index in A the index characterizing network state, wherein, a > 1 and a < A,Characterize B the desired value characterizing network interface performance of each network interface,Characterize the predetermined threshold value of b index in B the index characterizing network interface performance, wherein, b > 1 and b < B.

7. method as claimed in claim 1 or 2, it is characterised in that the application data stream that the network interface transfers being determined by mates with the described network interface determined, specifically includes:

When needs send application data stream, the matching relationship according to network interface Yu application data stream, it would be desirable to the application data stream of transmission is sent by the network interface mated；

When being received the application data stream of described network interface coupling by network interface, described application data stream is sent to the application belonging to described application data stream.

8. method as claimed in claim 7, it is characterised in that when needs send application data stream, the matching relationship according to network interface Yu application data stream, it would be desirable to the application data stream of transmission is sent by the network interface mated, and specifically includes:

When needs send application data stream, the matching relationship according to network interface Yu application data stream, it is determined that with the network interface needing the application data stream sent to mate；

For the packet constituting described application data stream, the home address HoA of the source address as this packet is saved in the preset field of this packet；

The Care-of Address CoA of the network interface determined is defined as the source address of this packet, and this packet is sent by the network interface being determined by；

When being received the application data stream of described network interface coupling by network interface, described application data stream is sent to the application belonging to described application data stream, specifically includes:

When being received the application data stream of described network interface coupling by network interface, for the packet constituting described application data stream, the HoA that preset field described in this packet preserves is used to replace the CoA as this packet rs destination address；And

Send the packet to the application belonging to described application data stream.

9. method as claimed in claim 1 or 2, it is characterised in that also include:

Receive the desired value of the index of the network interface performance characterizing described controlled node that controlled node sends；

According to the described desired value received, determine in described controlled node for receiving the network interface of described application data stream for application data stream.

10. method as claimed in claim 1 or 2, it is characterised in that for the application data stream controlled in node with send the trigger condition that the network interface that application data stream passes through carries out mating and include the either condition in following condition:

Arbitrary network interface becomes from invisible；

The desired value of the present load index of arbitrary network is more than default load-threshold value；

The signal intensity of arbitrary network is less than corresponding preset signal strength threshold value；

Start new application.

11. a data transmission method, it is characterised in that including:

Receive the matching relationship of application data stream and the network interface controlling the renewal that node sends；

By the application data stream that the network interface transfers updated mates with described network interface.

12. method as claimed in claim 11, it is characterised in that by the application data stream that the network interface transfers updated mates with the described network interface determined, specifically include:

When needs send application data stream, the matching relationship according to the network interface updated with application data stream, it would be desirable to the application data stream of transmission is sent by the network interface mated；

When being received the application data stream of described network interface coupling by network interface, described application data stream is sent to the application belonging to described application data stream.

13. the method as described in claim 11 or 12, it is characterised in that also include:

Determine the desired value of the index of the network interface performance characterizing controlled node；

The desired value determined is sent to control node.

14. one kind controls node, it is characterised in that including:

Desired value determines module, for when the network interface that the application data stream needed for controlling in node and transmission application data stream pass through mates, determine the desired value of default network index and characterize the desired value of the index of the service quality QoS of application belonging to application data stream

Wherein, described default network index includes: the index of the index characterizing network interface performance and/or the network state characterizing network interface map network；

Matching relationship determines module, the desired value of the QoS index of application belonging to the desired value according to described default network index and described sign application data stream, it is determined that the application data stream of coupling and network interface；

Data transmission module, for the matching relationship of the application data stream determined and network interface is sent to controlled node, and the network interface being determined by transmits, with described controlled node, the application data stream mated with the described network interface determined.

15. control node as claimed in claim 14, it is characterised in that belonging to described sign application data stream, the index of the QoS of application includes the one or more of following index: band merit, shake index, time delay index and packet loss index；

The index of described sign network interface performance includes the one or more of following index: interface attributes index, message queue size to be sent index, time delay index and throughput index；

The index of the network state of described sign network interface map network includes the one or more of following index: present load index, maximum access capability index, current sessions quantitative index, handling capacity index.

16. the control node as described in claims 14 or 15, it is characterised in that described matching relationship determines module, specifically for according to pre-set business matching relationship, it is determined that the network type that application belonging to application data stream is corresponding；Determine that whether the network interface of described network type map network is visible, and determine that each desired value of the network state index characterizing described network type map network is whether no more than predetermined threshold value corresponding respectively；When the network interface of described network type map network is visible, and described each desired value no more than respectively corresponding predetermined threshold value time, it is determined that described application data stream and the network interface of network type map network determined match.

17. control node as claimed in claim 16, it is characterized in that, described matching relationship determines module, the network interface being additionally operable to work as described network type map network is invisible, or when described each desired value existing at least one desired value more than corresponding predetermined threshold value, according to the desired value of the default network index of each network in described control node, and the desired value of index of the QoS of application belonging to sign application data stream, it is determined that in described each network of network interface to described application data stream can network interface；The desired value of the default network index according to described available network interface map network, it is determined that the availability of described available network interface；Network interface the highest for availability in described available network interface is defined as the network interface mated with described application data stream.

18. control node as claimed in claim 17, it is characterised in that described matching relationship determines module, specifically for determining whether described each network interface application data stream can be used in the following way:

It is mapped as default network index, it is determined that the desired value of the default network index after the mapping obtained after the index characterizing the QoS applied belonging to application data stream is mapped as default network index by characterizing the index of the QoS of application belonging to application data stream；Determining in described each network interface, the desired value of default network index disclosure satisfy that the network interface of the desired value of corresponding index in the default network index after described mapping；The network interface determined is defined as the network interface that application data stream is available.

19. control node as claimed in claim 17, it is characterized in that, described matching relationship determines module, specifically for the desired value of the default network index according to described available network interface map network, is determined the availability of current each available network by equation below:

Q_usability(I_n)=Q_usability(RAN_n)*Q_usability(L_n), wherein,

$Q_{\mathrm{usability}}\left({\mathrm{RAN}}_n\right)=\underset{i=1}{\overset{A}{\mathrm{\&Pi;}}}|\mathrm{Load}\_\mathrm{Th}\left(L_n^i\right)/\mathrm{Current}\_\mathrm{Load}\left(L_n^i\right)|;$

$Q_{\mathrm{usability}}\left(L_n\right)=\underset{i=1}{\overset{B}{\mathrm{\&Pi;}}}|\mathrm{Th}\_\mathrm{Value}\left(U_n^i\right)/\mathrm{Current}\_\mathrm{Value}\left(U_n^i\right)|;$

{RAN₁,RAN₂,...,RAN_n,...,RAN_NThe N number of different network that exists in characterization control node, { I₁,I₂,...,I_n,...,I_NCharacterize the network interface that described N number of different network is corresponding respectively, { L₁,L₂,...,L_n,...,L_NCharacterize the link that described N number of different network interface is corresponding respectively,Characterize the desired value of A the index characterizing network state of each network,Characterize the default load-threshold value of a index in A the index characterizing network state, wherein, a > 1 and a < A,Characterize B the desired value characterizing network interface performance of each network interface,Characterize the predetermined threshold value of b index in B the index characterizing network interface performance, wherein, b > 1 and b < B.

20. the control node as described in claims 14 or 15, it is characterized in that, described data transmission module, specifically for when needs send application data stream, matching relationship according to network interface Yu application data stream, it would be desirable to the application data stream of transmission is sent by the network interface mated；When being received the application data stream of described network interface coupling by network interface, described application data stream is sent to the application belonging to described application data stream.

21. control node as claimed in claim 20, it is characterized in that, described data transmission module, specifically for when needs send application data stream, matching relationship according to network interface Yu application data stream, it is determined that with the network interface needing the application data stream sent to mate；For the packet constituting described application data stream, the home address HoA of the source address as this packet is saved in the preset field of this packet；The Care-of Address CoA of the network interface determined is defined as the source address of this packet, and this packet is sent by the network interface being determined by；When being received the application data stream of described network interface coupling by network interface, described application data stream is sent to the application belonging to described application data stream, specifically include: when being received the application data stream of described network interface coupling by network interface, for the packet constituting described application data stream, the HoA that preset field described in this packet preserves is used to replace the CoA as this packet rs destination address；And send the packet to the application belonging to described application data stream.

22. the control node as described in claims 14 or 15, it is characterised in that described data transmission module, it is additionally operable to receive the desired value of the index of the network interface performance characterizing described controlled node that controlled node sends；

Described matching relationship determines module, is additionally operable to, according to the described desired value received, determine in described controlled node for receiving the network interface of described application data stream for application data stream.

23. the control node as described in claims 14 or 15, it is characterised in that for the application data stream controlled in node with send the trigger condition that the network interface that application data stream passes through carries out mating and include the either condition in following condition:

Arbitrary network interface becomes from invisible；

The desired value of the present load index of arbitrary network is more than default load-threshold value；

The signal intensity of arbitrary network is less than corresponding preset signal strength threshold value；

Start new application.

24. a controlled node, it is characterised in that including:

Signaling receiver module, for receiving the matching relationship of application data stream and the network interface controlling the renewal that node sends；

Business data transmission module, for the application data stream that the network interface transfers by updating mates with described network interface.

25. controlled node as claimed in claim 24, it is characterized in that, described business data transmission module, specifically for when needs send application data stream, matching relationship according to the network interface updated with application data stream, it would be desirable to the application data stream of transmission is sent by the network interface mated；When being received the application data stream of described network interface coupling by network interface, described application data stream is sent to the application belonging to described application data stream.

26. the controlled node as described in claim 24 or 25, it is characterised in that also comprise determining that module and signaling sending module；

Described determine module, for determining the desired value of the index of the network interface performance characterizing controlled node；

Described signaling sending module, for being sent to control node by the desired value determined.

27. a data transmission system, it is characterised in that including: the control node as described in claim 14～23, and the controlled node as described in claim 24～26.