CN103516699B - A kind of realize the method for data flow handoff, Apparatus and system - Google Patents

A kind of realize the method for data flow handoff, Apparatus and system Download PDF

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Publication number
CN103516699B
CN103516699B CN201210222684.0A CN201210222684A CN103516699B CN 103516699 B CN103516699 B CN 103516699B CN 201210222684 A CN201210222684 A CN 201210222684A CN 103516699 B CN103516699 B CN 103516699B
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lma
interface
signaling
mag
data flow
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CN103516699A (en
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薛开平
倪丹
何宁
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University of Science and Technology of China USTC
Huawei Technologies Co Ltd
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University of Science and Technology of China USTC
Huawei Technologies Co Ltd
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Abstract

Embodiments providing and a kind of realize the method for data flow handoff, Apparatus and system, relate to the communications field, for realizing in the case of at least two LMA, data stream is switched to other interfaces of MN by MN interface.Described method, comprises determining that and needs the data stream switched over the mailing address prefix obtaining data stream in mobile node MN；According to the mark of MN, and obtained interface identifier and the address information of a LMA of target interface by the configuration file of MN；According to the address information of a LMA, and sent the enhancing data flow handoff signaling of the mailing address prefix carrying data stream to the Mobile Access Gateway MAG that target interface accesses by a LMA；The enhancing data flow handoff receiving feedback confirms signaling；Log-on message according to described MAG updates the MAG information of storage.The embodiment of the present invention is applicable to the handoff scenario of data stream.

Description

A kind of realize the method for data flow handoff, Apparatus and system
Technical field
The present invention relates to the communications field, particularly relate to a kind of realize the method for data flow handoff, dress Put and system.
Background technology
PMIPv6 (Proxy Mobile IPv6, proxy mobile IP protocol) is a kind of based on MIPv6 The Internet mobility management protocol that (Mobile IPv6, mobile IPv 6 protocol) extends.PMIPv6 Network structure mainly by two functional entity: MAG (Mobile Access Gateway, move Dynamic access gateway) and LMA (Local Mobility Anchor, local mobile anchor) composition. Wherein, MAG is normally at the road of MN (Mobile Node, mobile node) access link By on device, it is responsible for being movable into and out of monitoring MN, and sends the binding letter of MN to LMA Breath.LMA be mainly used in preserve and update MN binding information, and forward MN send or The all packets received.In a PMIPv6 management domain, it is right to be completed by LMA The mobile management of MN in PMIPv6 management domain.
In one PMIPv6 management domain, there is the situation of multiple network technology co-existence, have many The MN of individual interface can access multiple different network by multiple interfaces simultaneously.Each interface On may there is multiple different stream, due to there is congested or other reasons in certain interface may Data flow handoff can be caused.Such as, as it is shown in figure 1, MN is configured with two interfaces, initially Time two interfaces be switched on using.Data stream X accesses MAG1, by LMA by interface 1 Management, mailing address prefix is pref1；Data stream Y accesses MAG2 by interface 2, by LMA manages, and mailing address prefix is pref2.Existing interface 2 occurs congested, by data stream Y Switching to and access MAG1 by interface 1, mailing address prefix pref2 keeps constant.Data The handoff procedure of stream Y is initiated by LMA, sends FMI (Flow Mobility Initiate, number According to stream switching) signaling is to MAG1, wherein, carries data flow handoff option letter in FMI signaling The signaling of breath, includes communication prefix pref2 of data stream Y in option information；MAG1 connects After receiving FMI, updating routing table increases pref2 and the routing iinformation of interface 1；MAG1 is more After new complete routing table, return FMA (Flow Mobility Acknowledge, number to LMA Confirm according to stream switching).
During data flow handoff in said one PMIPv6 management domain, only one of which In LMA, this LMA management PMIPv6 management domain between all of MAG, MN multiplex roles The switching of data stream.But, multiple LMA can be disposed in a PMIPv6 management domain, The distinct interface of MN may be by different LMA management, and each LMA is not aware that other LMA The information of the MAG of registration.Utilize said method can not realize data stream by the one of MN Interface is switched to other interfaces of the MN by different LMA management.
Summary of the invention
Embodiments of the invention provide a kind of and realize the method for data flow handoff, Apparatus and system, In the case of realizing deploying at least two LMA in PMIPv6 management domain, data Stream is switched to other interfaces of MN by an interface of MN.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
On the one hand, embodiments provide a kind of method realizing data flow handoff, including:
Determine the data stream needing to switch in mobile node MN and obtain the communication of described data stream Address prefix；According to the mark of described MN, and obtain mesh by the configuration file of described MN The interface identifier of tag splice mouth and the address information of the first local mobile anchor LMA；Described first LMA is the LMA of management objectives interface；According to the address information of a described LMA, and The Mobile Access Gateway MAG accessed to described target interface by a described LMA is sent Carry the enhancing data flow handoff signaling of the mailing address prefix of described data stream, so that institute State MAG according to the described data stream carried in described enhancing data flow handoff signaling communicatedly Location prefix updates routing iinformation also returns enhancing data flow handoff confirmation signaling；Described enhancing data Stream hand off signaling indicates described MAG for the LMA not storing the relevant information of MAG Carry out the signaling of data flow handoff；The enhancing data flow handoff receiving feedback confirms signaling；Described Strengthen data flow handoff and confirm that signaling completes data flow handoff for MAG, and to not registration The response signaling that the LMA of described MAG returns；Described enhancing data flow handoff confirms signaling Carry the log-on message of described MAG；Log-on message according to described MAG updates storage MAG information.
On the other hand, the embodiment of the present invention additionally provides a kind of method realizing data flow handoff, Including: receive the mailing address prefix carrying data stream that local mobile anchor LMA sends Enhancing data flow handoff signaling；Described enhancing data flow handoff signaling is not for storing movement The LMA of the relevant information accessing gateway MAG indicates described MAG to carry out data flow handoff Signaling；Mailing address prefix according to the data stream that described enhancing data flow handoff signaling is carried More new routing information；Send described enhancing data flow handoff and confirm that signaling is to the 2nd LMA；Its In, described data flow handoff confirms that signaling carries MAG log-on message, so that described the MAG is registered by two LMA according to described log-on message；Described enhancing data flow handoff Confirm that signaling completes data flow handoff for MAG, and to not registering described MAG's The response signaling that LMA returns.
On the other hand, the embodiment of the present invention additionally provides a kind of method realizing data flow handoff, Including: when having detected that interface accesses, according to mark and the described interface of mobile node MN Interface identifier, and by the configuration file of MN, obtain the local shifting that described interface need to access The address information of dynamic anchor point LMA；Address according to the described LMA that described interface need to access Information, sends agent binding update messages to described LMA；Described agent binding update messages In carry the log-on message of described MAG, so that described LMA is according to described MAG Log-on message update the MAG information of storage, and by data flow handoff to described interface；Connect Receiving the proxy binding acknowledgment messages that described LMA sends, described proxy binding acknowledgment messages is carried There is the mailing address prefix of data stream；Mailing address prefix updates route according to described data stream Information.
On the other hand, the embodiment of the present invention additionally provides a kind of local mobile anchor, including: really Cell, for determining the data stream needing in mobile node MN to switch over；Acquiring unit, For obtaining described data stream communicatedly according to the described described data stream determining that unit determines Location prefix；Described acquiring unit, is additionally operable to the mark according to described MN, and by described The configuration file of MN obtains interface identifier and the first local mobile anchor LMA of target interface Address information；A described LMA is the LMA of management objectives interface；Transmitting element, uses In the address information according to a described LMA, and by a described LMA to described mesh The Mobile Access Gateway MAG that tag splice mouth accesses sends and carries the institute that described acquiring unit obtains State the enhancing data flow handoff signaling of the mailing address prefix of data stream, so that described MAG Mailing address prefix according to the described data stream carried in described enhancing data flow handoff signaling More new routing information also returns enhancing data flow handoff confirmation signaling；Described enhancing data flow handoff Signaling is that the LMA of the relevant information for not storing MAG indicates described MAG to carry out The signaling of data flow handoff；First receives unit, for receiving the enhancing data flow handoff of feedback Confirm signaling；Described enhancing data flow handoff confirms that signaling completes data flow handoff for MAG, And to the response signaling of the LMA return not registering described MAG；Described enhancing data stream Switching confirms that signaling carries the log-on message of described MAG；Updating block, for according to institute The log-on message stating MAG updates the MAG information of storage.
On the other hand, the embodiment of the present invention additionally provides a kind of Mobile Access Gateway, including: connect Receive unit, for receive local mobile anchor LMA send carry data stream communicatedly The enhancing data flow handoff signaling of location prefix；Described enhancing data flow handoff signaling is not for depositing The LMA of the relevant information of storage Mobile Access Gateway MAG indicates described MAG to carry out data The signaling of stream switching；Updating block, for the described enhancing number received according to described reception unit Mailing address prefix updates routing iinformation according to the data stream that stream hand off signaling carries；Send single Unit, is used for sending described enhancing data flow handoff and confirms that signaling is to LMA；Wherein, described number Confirm that signaling carries MAG log-on message, so that described LMA is according to institute according to stream switching State log-on message MAG is registered；Described enhancing data flow handoff confirms that signaling is used for MAG completes data flow handoff, and the response returned to the LMA not registering described MAG Signaling.
On the other hand, the embodiment of the present invention additionally provides another kind of Mobile Access Gateway, including:
Detector unit, for detecting whether there is interface to access；Acquiring unit, for according to mobile node The mark of MN and the interface identifier of described interface, and by the configuration file of MN, obtain institute State the address information of the local mobile anchor LMA that interface need to access；Transmitting element, for root The address information of the described LMA that the described interface obtained according to described acquiring unit need to access, to Described LMA sends agent binding update messages；Described agent binding update messages carries The log-on message of described MAG, so that described LMA believes according to the registration of described MAG Breath updates the MAG information of storage, and by data flow handoff to described interface；Receive unit, For receiving the proxy binding acknowledgment messages that described LMA sends, described agent binding confirms to disappear Breath carries the mailing address prefix of data stream；Updating block, for according to shown reception unit The mailing address prefix updates routing iinformation of the described data stream received.
Another aspect, embodiments provides a kind of system realizing data flow handoff, bag Include: the first local mobile anchor, the second local mobile anchor, the first Mobile Access Gateway, the Two Mobile Access Gateways and mobile node；Described second local mobile anchor is above-mentioned local mobile Anchor point；First Mobile Access Gateway is above-mentioned a kind of Mobile Access Gateway；Described second moves and connects Function Access Gateway is above-mentioned another kind of Mobile Access Gateway.
Embodiments provide and a kind of realize the method for data flow handoff, Apparatus and system, After LMA determines the data stream needing to switch over, configured by the identifier lookup MN of MN File, obtains interface identifier and a LMA address information of target interface, by first LMA carries the mailing address prefix of data stream to the MAG transmission that target interface accesses Strengthen data flow handoff signaling；After MAG receives enhancing data flow handoff signaling, according to number According to the mailing address prefix updates routing iinformation of stream, and transmission carries MAG log-on message Strengthen data flow handoff confirm signaling to LMA, LMA according to the log-on message pair of MAG MAG registers.Achieve and deploy at least two LMA in PMIPv6 management domain In the case of, data stream is switched to other interfaces of MN by MN interface.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below by right In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, Accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art From the point of view of, on the premise of not paying creative work, it is also possible to obtain the attached of other according to these accompanying drawings Figure.
Fig. 1 is the schematic diagram of data flow handoff in prior art；
The signal of a kind of method realizing data flow handoff that Fig. 2 provides for the embodiment of the present invention Figure；
Fig. 3 is the concrete schematic diagram of step 103 in Fig. 2；
Fig. 4 realizes showing of the method for data flow handoff for the another kind that the embodiment of the present invention provides It is intended to；
Fig. 5 realizes showing of the method for data flow handoff for the another kind that the embodiment of the present invention provides It is intended to；
A kind of exemplary plot realizing data flow handoff that Fig. 6 provides for the embodiment of the present invention；
Fig. 7 realizes showing of the method for data flow handoff for the another kind that the embodiment of the present invention provides It is intended to；
The structural representation of a kind of local mobile anchor that Fig. 8 provides for the embodiment of the present invention；
Fig. 9 is a kind of structural representation of the transmitting element of the local mobile anchor shown in Fig. 8；
The structural representation of the another kind of local mobile anchor that Figure 10 provides for the embodiment of the present invention Figure；
Figure 11 is a kind of structural representation of the acquiring unit of the local mobile anchor shown in Figure 10 Figure；
Figure 12 is the another kind of structural representation of the acquiring unit of the local mobile anchor shown in Figure 10 Figure；
Figure 13 is the another kind of structural representation of the acquiring unit of the local mobile anchor shown in Fig. 8 Figure；
The structural representation of a kind of Mobile Access Gateway that Figure 14 provides for the embodiment of the present invention it One；
The structural representation of a kind of Mobile Access Gateway that Figure 15 provides for the embodiment of the present invention it Two；
The structural representation of the another kind of Mobile Access Gateway that Figure 16 provides for the embodiment of the present invention One of；
Figure 17 is the structural representation of the acquiring unit of Mobile Access Gateway shown in Figure 16；
The structural representation of the another kind of Mobile Access Gateway that Figure 18 provides for the embodiment of the present invention Two.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is entered Row clearly and completely describes, it is clear that described embodiment is only a part of embodiment of the present invention, Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having Have and make the every other embodiment obtained under creative work premise, broadly fall into present invention protection Scope.
Embodiments provide a kind of aspect realizing data flow handoff, as in figure 2 it is shown, Including:
101, local mobile anchor LMA determines the number needing in mobile node MN to switch over According to the mailing address prefix flowing and obtaining described data stream.
Concrete, LMA (Local Mobility Anchor, local mobile anchor) detects The interface of its MN managed (Mobile Node, mobile node) there is a need to carry out data During the interface that stream switches, such as interface occurs congested, and LMA is managed at least at this interface In one data stream, determine the data stream needing to switch over, and obtain the logical of this data stream Letter address prefix.
It should be noted that it is congested to be not only generation in the interface of MN that managed of LMA Interface needs to carry out data flow handoff, also breaks down or other can not process data stream in time Interface can also carry out data flow handoff, this is not limited by the present invention.
102, LMA is according to the mark of described MN, and is obtained by the configuration file of described MN Take interface identifier and the address information of the first local mobile anchor LMA of target interface.
Wherein, a described LMA is the LMA of management objectives interface.Target interface be MN need switching either with or without processing the described data stream chosen in the interface of described data stream The interface arrived.
Concrete, LMA obtains interface identifier and the address information of a LMA of target interface Method have two kinds.A kind of method is LMA according to the configuration of the identifier lookup of MN to MN File, and obtain in the configuration file of MN.Another kind of method is that LMA transmission interface please Ask signaling to strategic server, strategic server return the interface identifier and first of target interface The address information of LMA.
First method includes, LMA according to the identifier lookup of described MN to described MN's Configuration file, and true according at least one other interface of record in the configuration file of described MN The target interface that fixed described data stream need to be switched to, obtain described target interface interface identifier and The address information of the oneth LMA.
Wherein, other interfaces described be described MN total interface in carry out data stream with needs The interface of switching does not access the interface of same LMA.
Further, according at least one other interface of record in the configuration file of described MN Determine that the method for the target interface that described data stream need to be switched to has two kinds:
Method one, LMA are by the configuration file of the identifier lookup of MN to MN, described The configuration file of MN is chosen any one at least one other interface of the described MN of record Individual interface is as target interface, if described target interface is managed by a LMA, then passes through institute The configuration file stating MN obtains the address information of a described LMA.
It should be noted that a LMA refers to store the MAG phase of management objectives interface The LMA of pass information；It is to say, a LMA is that target interface is linked into by MAG LMA.
LMA refers to not store the relevant information of MAG, and has data stream need to switch to institute State the target interface of MAG management.
LMA sends switching according to the address information of a described LMA to a described LMA Solicited message.
Wherein, described handover request information is by data to the request of a described LMA transmission Stream switches to the information of the target interface of a described LMA management.
LMA receives the switching confirmation that a described LMA sends.
Wherein, described switching confirmation is the sound of the handover request information that a LMA sends Answer information.
Concrete, if the information that described switching confirmation is response traffic switching, it is determined that Target interface, say, that data stream allows hand over to the target interface chosen.
If the described switching confirmation information that to be data flow handoff failed, then illustrate that this target connects Mouthful can not make data flow handoff to the target interface chosen, need again MN residue other Interface is chosen an interface as target interface.
Wherein, the information of response traffic switching is to agree to the letter of data flow handoff so far interface Breath.The information that information is refusal data flow handoff so far interface that data flow handoff is failed.
After method two, LMA are by the identifier lookup of MN to the configuration file of MN, according to In the configuration file of described MN, at least one other interface of the described MN of record are corresponding The address information of LMA, the LMA corresponding at least one other interface of described MN is equal Send query load signaling, so that the LMA that at least one other interface of described MN are corresponding After receiving query load signaling, all return at least one other interface corresponding of described MN Load information.
It is negative that LMA receives that the LMA corresponding at least one other interface of described MN send Information carrying ceases, and according to described load information, is carried out by least one other interface of described MN Prioritization, chooses the highest interface of priority as target interface.
Concrete, LMA is according to load information, using interface minimum for load as priority High interface, using interface maximum for load as the minimum interface of priority.
It should be noted that configuration file can be stored in strategic server, such as AAA Server, it is possible to being stored in other storage devices, the present invention is without limitation.
It should be noted that LMA determines target interface by method one and method two, it is possible to To determine target interface by additive method, the present invention is without limitation.
Second method includes: the mark that LMA carries MN to strategic server transmission connects Mouth demand signalling, so that described strategic server is according to the MN in described interface requests signaling Identifier lookup in the configuration file of described MN, and remember in the configuration file of described MN At least one other interface of record determine the target interface that described data stream need to be switched to, and returns Return interface identifier and the address information of a LMA of described target interface.
It should be noted that strategic server records at least in the configuration file of described MN The method determining the target interface that described data stream need to be switched in one other interface, Ke Yiyu At least one other interface that LMA records in the configuration file of described MN determine described The method of the target interface that data stream need to be switched to can be identical, it is possible to different, the present invention is to this Do not limit.
Wherein, described interface requests signaling is for indicating described strategic server in the configuration of MN File determines the target interface of data flow handoff.
LMA receives the interface identifier and described the of the target interface that described strategic server returns The address information of one LMA.
It should be noted that the configuration file of strategic server storage MN, can be each The configuration file of MN individually stores, it is possible to be by the configuration file centralized stores of all MN, The present invention is without limitation.
It should be noted that the configuration file of a MN have recorded mark and the MN of MN The relevant information of total interface, including the interface identifier of each interface, and each interface accesses The address information of LMA, certain configuration file is also recorded for other relevant informations of MN, No longer enumerate at this.
103, LMA is according to the address information of a described LMA, and by described first LMA sends to the Mobile Access Gateway MAG that described target interface accesses and carries described number According to the enhancing data flow handoff signaling of mailing address prefix of stream so that described MAG according to The mailing address prefix updates of the described data stream carried in described enhancing data flow handoff signaling Routing iinformation also returns enhancing data flow handoff confirmation signaling.
Wherein, described enhancing data flow handoff signaling is not for storing the relevant information of MAG LMA indicate described MAG to carry out the signaling of data flow handoff.
Concrete, that LMA is accessed to described target interface by described LMA MAG Send the side strengthening data flow handoff signaling of the mailing address prefix carrying described data stream Method has two kinds.A kind of LMA of being will carry the enhancing of the mailing address prefix of described data stream Data flow handoff signaling sends to a LMA, a LMA send to target interface access MAG, with reference to step 1031a-1033a.Another kind is, LMA is obtained by a LMA Taking the address information of the MAG that target interface accesses, LMA connects according to the target interface obtained Before the address information of the MAG entered sends the mailing address carrying described data stream to MAG The enhancing data flow handoff signaling sewed, with reference to step 1031b-1034b.
Wherein, LMA will carry the enhancing data stream of the mailing address prefix of described data stream Hand off signaling sends to a LMA, a LMA send to target interface access MAG, as it is shown on figure 3, include:
1031a, LMA send to a described LMA and carry described data stream communicatedly The enhancing data flow handoff signaling of location prefix.
Concrete, LMA obtains the address information of a LMA in the configuration file of MN After, carry described data stream according to the address information of a LMA to a LMA transmission The enhancing data flow handoff signaling of mailing address prefix.Wherein, described enhancing data flow handoff Signaling also carries the mark of described MN, the interface identifier of described target interface.
1032a, a LMA receive the enhancing of the mailing address prefix carrying described data stream Data flow handoff signaling, and determine what target interface accessed according to strengthening data flow handoff signaling The address information of MAG.
Concrete, a LMA receives the mailing address prefix carrying described data stream After strengthening data flow handoff signaling, according to strengthening the described MN carried in data flow handoff signaling Mark, the interface identifier of described target interface determine that target interface accesses by a LMA The address information of the MAG of management.
1033a, a LMA carry to MAG transmission according to the address information of described MAG There is the enhancing data flow handoff signaling of the mailing address prefix of described data stream.
Concrete, after a LMA determines the address information of the MAG that target interface accesses, Address information according to described MAG sends to MAG and carries described data stream communicatedly The enhancing data flow handoff signaling of location prefix, so that MAG is according to the mailing address of data stream Prefix updates routing iinformation also returns enhancing data flow handoff confirmation signaling.
LMA obtains the address information of the MAG that target interface accesses by a LMA, The address information of the MAG that LMA accesses according to the target interface obtained sends to MAG and carries There is the enhancing data flow handoff signaling of the mailing address prefix of described data stream, with reference to Fig. 3 institute Show, including:
1031b, LMA send inquiry signaling to a described LMA.
Wherein, described inquiry signaling carries the mark of described MN, described target interface Interface identifier.
Concrete, LMA obtains the address information of a LMA in the configuration file of MN After, send inquiry signaling according to the address information of a LMA to a LMA, to obtain The address information of the MAG that target interface accesses.
1032b, a LMA receive inquiry signaling, and the MN carried according to inquiry signaling Mark, the interface identifier of described target interface determine the address of MAG that target interface accesses Information, and the inquiry response signaling of the address information carrying described MAG is returned to LMA.
1033b, LMA receive the ground carrying described MAG that a described LMA sends The inquiry response signaling of location information.
1034b, LMA carry to described MAG transmission according to the address information of described MAG There is the enhancing data flow handoff signaling of the mailing address prefix of described data stream, so that MAG Mailing address prefix updates routing iinformation according to data stream to return enhancing data flow handoff true Recognize signaling.
104, LMA receives the enhancing data flow handoff confirmation signaling of feedback.
Wherein, described enhancing data flow handoff confirms that signaling completes data flow handoff for MAG, And to the response signaling of the LMA return not registering described MAG.Described enhancing data stream Switching confirms that signaling carries the log-on message of described MAG.
105, LMA updates the MAG information of storage according to the log-on message of described MAG.
Concrete, the log-on message of MAG includes the Care-of Address of MAG, access interface etc. Information.LMA updates storage according to the log-on message of MAG the BCE of MAG information (Binding Cache Entry, banding cache entry) so that in LMA, record object connects The MAG that mouth accesses, it is achieved that data stream is switched to target interface by source interface and passes through MAG Access LMA, do not change the LMA that data stream accesses, and achieve the switching of data stream.
Embodiments providing a kind of method realizing data flow handoff, LMA determines to be needed After data stream to be switched over, by the identifier lookup MN configuration file of MN, obtain mesh The interface identifier of tag splice mouth and a LMA address information, connect to target by a LMA The MAG that mouth accesses sends the enhancing data flow handoff of the mailing address prefix carrying data stream Signaling；LMA receives the enhancing data flow handoff that carries of feedback and confirms after signaling, according to MAG is registered by the log-on message of MAG.Achieve and dispose in PMIPv6 management domain In the case of at least two LMA, data stream is switched to MN's by MN interface Other interfaces, and do not change the LMA of access.
Embodiments provide a kind of method realizing data flow handoff, as shown in Figure 4, Including:
401, the mailing address carrying data stream that local mobile anchor LMA sends is received The enhancing data flow handoff signaling of prefix.
Wherein, described enhancing data flow handoff signaling is for not storing Mobile Access Gateway The LMA of the relevant information of MAG indicates described MAG to carry out the signaling of data flow handoff.
402, before the mailing address of the data stream carried according to described enhancing data flow handoff signaling Sew more new routing information.
Concrete, MAG is according to the mailing address prefix of data stream, at the routing iinformation of storage The mailing address prefix of middle interpolation described data stream and the interface identifier of corresponding target interface Information, thus have updated routing iinformation.
Such as, the interface identifier of target interface is 1, and the mailing address prefix of data stream is pre1, Then the information of mailing address prefix pre1 with the interface identifier 1 of corresponding target interface is added Add in routing iinformation, so that MAG receives the data stream that mailing address prefix is pre1 Transmission to interface identifier is the interface of 1.
403, send described enhancing data flow handoff and confirm that signaling is to LMA.
Wherein, described data flow handoff confirms that signaling carries MAG log-on message, so that Described LMA is updated the MAG information of storage according to described log-on message to MAG, So that the data stream received is sent to target interface by LMA by MAG.Described enhancing Data flow handoff confirms that signaling completes data flow handoff for MAG, and described to not registration The response signaling that the LMA of MAG returns.
Concrete, MAG can first send described enhancing data flow handoff and confirm that signaling is to first LMA, then by a LMA forwarding described enhancing data flow handoff confirmation signaling to LMA.
MAG, also dependent on the configuration file of MN described in the identifier lookup of MN, obtains described The address information of LMA；Address information according to described LMA sends described enhancing data stream and cuts Change confirmation signaling extremely described LMA.
Embodiments providing a kind of method realizing data flow handoff, MAG receives After strengthening data flow handoff signaling, according to the mailing address prefix updates routing iinformation of data stream, And send carry MAG log-on message enhancing data flow handoff confirm signaling to LMA, So that MAG is registered by LMA according to the log-on message of MAG.So make MN Interface be whether managed collectively by same LMA, the mesh of data flow handoff can be become Interface, when adding switch data stream, select target interface scope, improve data stream The success rate of other interfaces it is switched to by MN interface.
Embodiments provide a kind of method realizing data flow handoff, as it is shown in figure 5, Including:
501, a MAG sends report information to described LMA.
Wherein, described report information is that the interface that a described MAG manages all can not switch number The information of the request LMA switch data stream sent during according to stream.
Concrete, a MAG detects that there is a need to carry out data stream in its interface managed cuts The interface changed, and detect whether its interface being not required to carry out data flow handoff managed has and can enter The interface of the switching of row data stream.
If being not required to of a MAG management carries out not having to carry out in the interface of data flow handoff The interface of data flow handoff, then send report information to LMA, so that LMA is to entering Data stream in the interface of row data flow handoff switches over, and performs step 502.
Exemplary, as shown in Figure 6, MN is configured with two interfaces, interface 1 and interface 2；
Data stream X accesses LMA1 at interface 1 by MAG1, before the mailing address of data stream X Sew and access LMA2 at interface 2 by MAG2 for pre1, data stream Y, data stream Y's It is pre2 that communication performs prefix.Interface 2 occurs congested, and the interface of MAG2 management only has MN Interface 2, now MAG2 does not has to carry out the interface of data stream Y switching, then to LMA2 There is report information.
If it should be noted that its interface being not required to carry out data flow handoff managed having load Little, it is possible to carry out the interface of data flow handoff, be first interface, then a MAG is by One interface is as target interface, and according to the mailing address prefix of data stream and connecing of target interface Mouth identifies more new routing information, it is achieved by source interface, data stream is switched to target interface, now Being not required to report LMA, the route being between LMA and a MAG is constant, is not required to hold Row following step.
502, LMA receives the report information that a described MAG sends.
503 is identical with step 101, does not repeats them here.
As above, described in example, LMA2 determines that the data stream needing switching is data stream Y, and obtains Mailing address prefix pre2. of data stream Y
504 is identical with step 102, does not repeats them here.
As above, described in example, LMA2, by searching the configuration file of MN, determines that interface 1 is for cutting Change the target interface of data stream Y, and obtain the interface identifier of interface 1 and interface 1 passes through MAG The address information of the LMA1 accessed.
505 is identical with step 103, does not repeats them here.
As above, described in example, LMA2 is carried to LMA1 transmission by the address information of LMA1 There is the enhancing data flow handoff signaling of mailing address prefix pre2 of data stream Y.Wherein, increase Strong data flow handoff signaling also carries the interface identifier of target interface and the mark of MN. LMA1 receives the enhancing data stream of mailing address prefix pre2 carrying data stream Y and cuts After changing signaling, according to strengthen in data flow handoff signaling the interface identifier also carrying interface 1 and The mark of MN determines that the MAG that interface 1 accesses is MAG1, and according to the MAG1 of record Address information sends the enhancing of mailing address prefix pre2 carrying data stream Y to MAG1 Data flow handoff signaling.
Or, LMA2 sends inquiry signaling by the address information of LMA1 to LMA1, Wherein, described inquiry signaling carries the mark of described MN, the interface of described target interface Mark.After LMA1 receives inquiry signaling, according to the mark stating MN carried in inquiry signaling Know, the interface identifier of described target interface determines that the MAG that interface 1 accesses is MAG1, and The address information inquiry response signaling carrying MAG1 is returned to LMA2.LMA2 receives After inquiry response signaling, according to the address information of MAG1, send to MAG1 and carry The enhancing data flow handoff signaling of mailing address prefix pre2 of data stream Y.
506 is identical with step 401, does not repeats them here.
507 is identical with step 402, is not repeating at this.
508 is identical with step 403, is not repeating at this.
509 is identical with step 104, is not repeating at this.
510 is identical with step 105, is not repeating at this.
As above, described in example, LMA2 is according to the log-on message of MAG1, and updating storage has MAG The BCE of information.
It should be noted that a MAG has registered in LMA, LMA is by the The MAG that one LMA finds, in LMA before step 508 not in LMA Registration.
Embodiments providing a kind of method realizing data flow handoff, LMA determines to be needed After data stream to be switched over, by the identifier lookup MN configuration file of MN, obtain mesh The interface identifier of tag splice mouth and a LMA address information, connect to target by a LMA The MAG that mouth accesses sends the enhancing data flow handoff of the mailing address prefix carrying data stream Signaling；After MAG receives enhancing data flow handoff signaling, according to the mailing address of data stream Prefix updates routing iinformation, and send the enhancing data flow handoff carrying MAG log-on message Confirm that MAG is registered according to the log-on message of MAG by signaling to LMA, LMA. It is achieved in that in the case of deploying at least two LMA in PMIPv6 management domain, number It is switched to other interfaces of MN by an interface of MN according to stream.
Embodiments provide a kind of method realizing data flow handoff, as it is shown in fig. 7, Including:
601, MAG has detected when interface accesses, according to mark and the institute of mobile node MN State the interface identifier of interface, and by the configuration file of MN, obtain what described interface need to access The address information of local mobile anchor LMA.
Concrete, MAG obtains the ground of the local mobile anchor LMA that described interface need to access The method of location information has two kinds.A kind of method is that MAG arrives according to the identifier lookup of MN The configuration file of MN, and obtain in configuration file.Another kind of method is that MAG sends LMA address query signaling, to strategic server, is returned by strategic server and obtains described interface The address information of the local mobile anchor LMA that need to access.
Wherein, first method includes: mark according to mobile node MN described in MAG and The interface identifier of described interface finds the configuration file of described MN, and joining at described MN Put the address information obtaining the local mobile anchor LMA that described interface need to access in file.
Second method includes: MAG sends the mark carrying described MN to strategic server The LMA address query signaling of the interface identifier of knowledge and described interface, so that described strategy clothes Be engaged in the device identifier lookup according to the MN in described LMA address query signaling to described MN's Configuration file, and interface identifier according to described interface is searched in the configuration file of described MN To the address information of the LMA that described interface accesses, and return the LMA that described interface accesses Address information.
Wherein, described LMA address query signaling is used for indicating described strategic server according to connecing The identifier lookup of mouth goes out the address information of the LMA that described interface accesses.
MAG receives the address of the LMA of the described interface access that described strategic server returns Information.
602, the address information of the LMA that MAG need to access according to described interface, to described LMA sends agent binding update messages.
Wherein, described agent binding update messages is to notify that described LMA has the interface newly enabled The information accessed.Described agent binding update messages carries the log-on message of described MAG, So that described LMA registers described MAG according to the log-on message of described MAG, and by number Described interface is switched to, say, that the interface newly enabled of MN accesses at link layer according to stream MAG not do not register in LMA, now, this MAG sends agent binding update and disappears Cease to LMA so that MAG is registered by LMA according to the log-on message of MAG, in order to will Need the data flow handoff of switching in the interface newly enabled.
603, LMA receives agent binding update messages, according to agent binding update messages more The MAG information of new storage, and send proxy binding acknowledgment messages to MAG.
Concrete, LMA receives the agent binding update messages that MAG sends, wherein, generation Carrying MAG log-on message in reason binding update messages, described log-on message includes MAG Care-of Address, the LMA such as access interface registers information required during MAG.
If in the MAG information of LMA storage, having the related registration information of described MAG, Then update the related registration information of the MAG stored, say, that revise this of former storage The relevant information of MAG.
If in the MAG information of LMA storage, there is no registration letter relevant for described MAG Breath, then add the log-on message of this MAG to the MAG information of storage, to update MAG information, after having updated MAG information, sends agent binding to MAG and confirms to disappear Breath, so that data stream can be sent to LMA by MAG, or receives the number that LMA sends According to stream.
Wherein, proxy binding acknowledgment messages carries the mailing address prefix of data stream, so that Obtain the MAG mailing address prefix updates routing iinformation according to this data stream, thus realize number The interface switching to newly start according to stream processes.
604, MAG receives the proxy binding acknowledgment messages that LMA sends, and according to described generation Reason binding update messages more new routing information.
Concrete, MAG receives proxy binding acknowledgment messages, in proxy binding acknowledgment messages Carry the mailing address prefix of the data stream needing switching.MAG leading to according to this data stream Letter address prefix and the interface identifier more new routing information of interface newly enabled so that this is communicatedly The data stream of location prefix is processed by the interface newly enabled of MN.
Embodiments providing a kind of method realizing data flow handoff, MAG detects When having interface to access, according to interface identifier and the identifier lookup configuration file of MN of this interface, The address information newly enabling the LMA accessed needed for interface of MN is obtained in configuration file, Send carry the agent binding update messages of MAG log-on message to LMA, LMA according to The log-on message registration MAG of MAG, and return the mailing address prefix carrying data stream Proxy binding acknowledgment messages to MAG, MAG according to generation of the mailing address prefix of data stream Reason binding acknowledgement information updating routing iinformation, so that data flow handoff newly enabling to MN In interface.The feelings deploying at least two LMA in PMIPv6 management domain are achieved in that it Under condition, data stream is switched to other interfaces of MN by MN interface.
Embodiments provide a kind of local mobile anchor, as shown in Figure 8, including:
Determine unit 701, for determining the data stream needing in mobile node MN to switch over.
Acquiring unit 702, for obtaining according to the described described data stream determining that unit 701 determines Take the mailing address prefix of described data stream.
Described acquiring unit 702, is additionally operable to the mark according to described MN, and by described The configuration file of MN obtains interface identifier and the first local mobile anchor LMA of target interface Address information；A described LMA is the LMA of management objectives interface.
Transmitting element 703, for the address information according to a described LMA, and passes through institute State the Mobile Access Gateway MAG that a LMA accesses to described target interface to send and carry The enhancing data stream of the mailing address prefix of the described data stream that described acquiring unit 702 obtains Hand off signaling, so that described MAG is according to carrying in described enhancing data flow handoff signaling The mailing address prefix updates routing iinformation of described data stream to return enhancing data flow handoff true Recognize signaling；Described enhancing data flow handoff signaling is the relevant information for not storing MAG LMA indicate described MAG to carry out the signaling of data flow handoff.
Concrete, described transmitting element 703 have for, send to a described LMA and take Enhancing data flow handoff signaling with the mailing address prefix of described data stream；Described enhancing number According to the interface mark also carrying the mark of described MN, described target interface in stream hand off signaling Know, so that a LMA identifying and the interface mark of described target interface according to described MN Know and determine the MAG that described target interface accesses, and obtain the address information of described MAG, Address information according to described MAG sends described enhancing data flow handoff letter to described MAG Order.
Or, described transmitting element 703, as it is shown in figure 9, include: enquiry module 7031, Receiver module 7032 and sending module 7033.
Described enquiry module 7031, for sending inquiry signaling to a described LMA；Described Inquiry signaling carries the mark of described MN, the interface identifier of described target interface, so that Obtain a LMA and determine institute according to the mark of described MN and the interface identifier of described target interface Stating the MAG that target interface accesses, and obtain the address information of described MAG, return is carried There is the inquiry response signaling of the address information of described MAG.
Described receiver module 7032, described for receiving carrying of a described LMA return The inquiry response signaling of the address information of MAG.
Described sending module 7033, is used for the address information according to described MAG to described MAG Send the enhancing data flow handoff signaling of the mailing address prefix carrying described data stream.
First receives unit 704, confirms signaling for receiving the enhancing data flow handoff of feedback；
Described enhancing data flow handoff confirms that signaling completes data flow handoff for MAG, and to not having Register the response signaling that the LMA of described MAG returns；Described enhancing data flow handoff confirms Signaling carries the log-on message of described MAG.
Updating block 705, updates the MAG of storage for the log-on message according to described MAG Information.
Above-mentioned local mobile anchor, as shown in Figure 10, also includes:
Search unit 706, for the configuration of the identifier lookup according to described MN to described MN File.
Described acquiring unit 702 specifically for, according to searching the described MN's that finds of unit In configuration file, at least one other interface of record determine the mesh that described data stream need to be switched to Tag splice mouth, obtains interface identifier and the address information of a LMA of described target interface；Institute State in the total interface that other interfaces are described MN with the interface needing to carry out data flow handoff Do not access the interface of same LMA.
Concrete, described acquiring unit 702, as shown in figure 11, including: choose module 7021, Acquisition module 7022, the first sending module 7023, the first receiver module 7024.
Described choose module 7021, for described in record in the configuration file of described MN Other interfaces of at least one of MN are chosen any one interface as target interface.
Described acquisition module 7022, if being managed by a LMA, then for described target interface The address information of a described LMA is obtained by the configuration file of described MN.
Described first sending module 7023, for according to the address information of a described LMA to A described LMA sends handover request information；Described handover request information is to described first The request that LMA sends is by the information of the target interface of data flow handoff to described LMA management.
Described first receiver module 7024, true for receiving the switching of a described LMA transmission Recognize information；If the information that described switching confirmation is response traffic switching, it is determined that target Interface.
Or, described acquiring unit 702, as shown in figure 12, including: the second sending module 7025, the second receiver module 7026, arrange module 7027 and determine module 7028.
Described second sending module 7025, for according to record in the configuration file of described MN The address information of LMA corresponding at least one other interface of described MN, to described The LMA that other interfaces of at least one of MN are corresponding sends query load signaling, so that institute State after LMA corresponding at least one other interface of MN receive query load signaling, return Return the corresponding load information of at least one other interface of described MN.
Described second receiver module 7026, connects at least one receiving described MN The load information that the LMA that mouth is corresponding returns.
Described arrangement module 7027, for according to described receiver module receive described at least one At least one other interface of described MN are carried out prioritization by individual load information.
Described determine module 7028, for the described MN's that discharges according to described arrangement module The interface that the priority orders of at least one other interface chooses priority the highest connects as target Mouthful.
Or, described acquiring unit 702, as shown in figure 13, including: signaling sending module 7029 and signaling response receiver module 7020.
Described signaling sending module 7029, sends the mark carrying MN to strategic server Interface requests signaling, so that described strategic server is according in described interface requests signaling The identifier lookup of MN is in the configuration file of described MN, and at the configuration file of described MN Other interfaces of at least one of middle record determine the target interface that described data stream need to be switched to, And return interface identifier and the address information of a LMA of described target interface；Described interface Demand signalling is for indicating described strategic server to determine data stream in the configuration file of MN The target interface of switching.
Signaling response receiver module 7020, for receiving the target that described strategic server returns The interface identifier of interface and the address information of a described LMA.
Above-mentioned local mobile anchor, with reference to shown in Figure 10, also includes:
Second receive unit 707, for receive institute the oneth MAG transmission report information, institute State the interface that report information is a described MAG management all to send during switch data stream The information of request LMA switch data stream.
Embodiments providing a kind of local mobile anchor, LMA determines that needs are cut After the data stream changed, by the identifier lookup MN configuration file of MN, obtain target interface Interface identifier and a LMA address information, accessed to target interface by a LMA MAG sends the enhancing data flow handoff signaling of the mailing address prefix carrying data stream； LMA receives the enhancing data flow handoff that carries of feedback and confirms after signaling, according to MAG Log-on message MAG is registered.It is achieved in that in PMIPv6 management domain deployment In the case of at least two LMA, data stream is switched to MN's by MN interface Other interfaces, and do not change the LMA of access.
Embodiments provide a kind of Mobile Access Gateway, as shown in figure 14, including:
Receive unit 111, for receive local mobile anchor LMA send carry data The enhancing data flow handoff signaling of the mailing address prefix of stream.
Wherein, described enhancing data flow handoff signaling is not for storing Mobile Access Gateway The LMA of the relevant information of MAG indicates described MAG to carry out the signaling of data flow handoff.
Updating block 112, for the described enhancing data received according to described reception unit 111 The mailing address prefix updates routing iinformation of the data stream that stream hand off signaling carries.
Transmitting element 113, is used for sending described enhancing data flow handoff and confirms that signaling is to LMA.
Wherein, described data flow handoff confirms that signaling carries MAG log-on message, so that Described LMA updates the MAG information of storage according to described log-on message to MAG；Described Strengthen data flow handoff and confirm that signaling completes data flow handoff for MAG, and to not registration The response signaling that the LMA of described MAG returns.
Further, described transmitting element 113 specifically for, send described enhancing data stream and cut Change confirmation signaling to a LMA so that the oneth LMA forward described enhancing data flow handoff Confirm that signaling is to LMA.
Said method, as shown in figure 15, also includes:
Search unit 114, for the configuration file according to MN described in the identifier lookup of MN, Obtain the address information of described LMA.
Described transmitting element 113 specifically for, according to described lookup unit 114 search described in The address information of LMA sends described enhancing data flow handoff and confirms signaling extremely described LMA.
Described transmitting element 113, is additionally operable to send report information, described report to described LMA Announcement information be described MAG management interface all can not switch data stream time send request described in The information of LMA switch data stream.
Embodiments providing a kind of Mobile Access Gateway, MAG receives enhancing data After stream hand off signaling, according to the mailing address prefix updates routing iinformation of data stream, and transmission is taken Enhancing data flow handoff with MAG log-on message confirms that signaling is to LMA, in order to LMA MAG is registered by the log-on message according to MAG.No matter so making the interface of MN Whether it is managed collectively by same LMA, the purpose interface of data flow handoff can be become, increase When having added switch data stream, select the scope of target interface, improve data stream by the one of MN Individual interface is switched to the success rate of other interfaces.
Embodiments provide a kind of Mobile Access Gateway, as shown in figure 16, including:
Detector unit 131, for detecting whether there is interface to access.
Acquiring unit 132, is used for when detector unit 131 has detected that interface accesses, according to The mark of mobile node MN and the interface identifier of described interface, and by the configuration file of MN, Obtain the address information of the local mobile anchor LMA that described interface need to access.
Concrete, described acquiring unit 132, as shown in figure 17, including: sending module 1321 With receiver module 1322.
Described sending module 1321, carries described MN's for sending to strategic server The LMA address query signaling of the interface identifier of mark and described interface, so that described strategy Server is according to the identifier lookup of the MN in described LMA address query signaling to described MN Configuration file, and interface identifier according to described interface is looked in the configuration file of described MN Find the address information of the LMA that described interface accesses, and return the LMA that described interface accesses Address information.
Wherein, described LMA address query signaling is used for indicating described strategic server according to connecing The identifier lookup of mouth goes out the address information of the LMA that described interface accesses.
Described receiver module 1322, for receiving the described interface that described strategic server returns The address information of the LMA accessed.
Or, described Mobile Access Gateway, as shown in figure 18, also include:
Search unit 136, for the described mark according to mobile node MN and described interface Interface identifier finds the configuration file of described MN.
Described acquiring unit 132 specifically for, obtain described in the configuration file of described MN The address information of the local mobile anchor LMA that interface need to access.
Transmitting element 133, need to connect for the described interface obtained according to described acquiring unit 132 The address information of the described LMA entered, sends agent binding update messages to described LMA.
Wherein, described agent binding update messages carries the log-on message of described MAG, So that speed is searched LMA and is updated the MAG information of storage according to the log-on message of described MAG, And by data flow handoff to described interface.
Receive unit 134, for receiving the proxy binding acknowledgment messages that described LMA sends, Described proxy binding acknowledgment messages carries the mailing address prefix of data stream.
Updating block 135, for the described data stream according to the reception of described reception unit 134 Mailing address prefix updates routing iinformation.
Embodiments providing a kind of Mobile Access Gateway, MAG has detected that interface connects Fashionable, according to the interface identifier of this interface and the identifier lookup of MN to configuration file, and know MN newly enables the required LMA accessed of interface, sends the generation carrying MAG log-on message Reason binding update messages registers MAG to LMA, LMA according to the log-on message of MAG, And return the proxy binding acknowledgment messages of the mailing address prefix carrying data stream extremely MAG, MAG update road according to the proxy binding acknowledgment messages of the mailing address prefix of data stream By information, so that data flow handoff is in the interface newly enabled of MN.It has been achieved in that In the case of deploying at least two LMA in PMIPv6 management domain, data stream is by MN's One interface is switched to other interfaces of MN.
Embodiments provide a kind of system realizing data flow handoff, including: first Ground mobile anchor point, the second local mobile anchor, the first Mobile Access Gateway, second moves access Gateway and mobile node.
Described first Mobile Access Gateway is above-mentioned mobile gateway, described second Mobile Access Gateway For another Mobile Access Gateway above-mentioned, described second local mobile anchor is above-mentioned mobile anchor point.
Embodiments provide and a kind of realize the method for data flow handoff, Apparatus and system, After LMA determines the data stream needing to switch over, configured by the identifier lookup MN of MN File, obtains interface identifier and a LMA address information of target interface, by first LMA carries the mailing address prefix of data stream to the MAG transmission that target interface accesses Strengthen data flow handoff signaling；After MAG receives enhancing data flow handoff signaling, according to number According to the mailing address prefix updates routing iinformation of stream, and transmission carries MAG log-on message Strengthen data flow handoff confirm signaling to LMA, LMA according to the log-on message pair of MAG MAG registers.It is achieved in that and has deployed at least two in PMIPv6 management domain In the case of LMA, data stream is switched to other interfaces of MN by MN interface.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is also Being not limited to this, any those familiar with the art is at the technology model that the invention discloses In enclosing, change can be readily occurred in or replace, all should contain within protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.

Claims (31)

1. the method realizing data flow handoff, it is characterised in that including:
Determine the data stream needing to switch in mobile node MN and obtain described data stream Mailing address prefix；
According to the mark of described MN, and obtain target interface by the configuration file of described MN Interface identifier and the address information of the first local mobile anchor LMA；A described LMA It is the LMA of management objectives interface；
According to the address information of a described LMA, and by a described LMA to described The Mobile Access Gateway MAG that target interface accesses sends and carries described data stream communicatedly The enhancing data flow handoff signaling of location prefix, so that described MAG is according to described enhancing data Flow the mailing address prefix updates routing iinformation of the described data stream carried in hand off signaling and return Increase back up strong data flow handoff and confirm signaling；Described enhancing data flow handoff signaling is for not storage The LMA of the relevant information of MAG indicates described MAG to carry out the signaling of data flow handoff；
The enhancing data flow handoff receiving feedback confirms signaling；Described enhancing data flow handoff confirms Signaling completes data flow handoff for MAG, and to not registering the LMA of described MAG The response signaling returned；Described enhancing data flow handoff confirms that signaling carries described MAG's Log-on message；
Log-on message according to described MAG updates the MAG information of storage.
Method the most according to claim 1, it is characterised in that described according to described MN Mark, and obtained the interface identifier and first of target interface by the configuration file of described MN The address information of local mobile anchor LMA includes:
Identifier lookup according to described MN is to the configuration file of described MN, and according to described In the configuration file of MN, at least one other interface of record determine that described data stream needs switching The target interface arrived, obtains the interface identifier of described target interface and the address letter of a LMA Breath；Other interfaces described be described MN total interface in need to carry out data flow handoff Interface does not access the interface of same LMA.
Method the most according to claim 1, it is characterised in that described according to described MN Mark, and obtained the interface identifier and first of target interface by the configuration file of described MN The address information of local mobile anchor LMA includes:
The mark interface requests signaling carrying MN is sent to strategic server, so that described Strategic server is according to the identifier lookup of the MN in described interface requests signaling to described MN Configuration file in, and in the configuration file of described MN record at least one other interface The middle target interface determining that described data stream need to be switched to, and return the interface of described target interface Mark and the address information of a LMA；Described interface requests signaling is used for indicating described strategy Server determines the target interface of data flow handoff in the configuration file of MN；
Receive the interface identifier and described first of the target interface that described strategic server returns The address information of LMA.
Method the most according to claim 2, it is characterised in that described according to described MN Configuration file in record at least one other interface determine what described data stream need to be switched to Target interface includes:
In the configuration file of described MN at least one other interface of the described MN of record Choose any one interface as target interface, if described target interface is by a described LMA Management, then obtain the address information of a described LMA by the configuration file of described MN；
Address information according to a described LMA sends handover request to a described LMA Information；Described handover request information is that data stream is cut by the request sent to a described LMA Shift to the information of target interface；
Receive the switching confirmation that a described LMA sends；If described switching confirmation Information for response traffic switching, it is determined that target interface.
Method the most according to claim 2, it is characterised in that described according to described MN Configuration file in record at least one other interface determine what described data stream need to be switched to Target interface includes:
At least one other interface of the described MN of record in configuration file according to described MN The address information of corresponding LMA, corresponding at least one other interface of described MN LMA all sends query load signaling, so that at least one other interface pair of described MN After the LMA answered receives query load signaling, all return described MN at least one other The corresponding load information of interface；
Receive the load letter that LMA corresponding at least one other interface of described MN sends Breath, and according to described load information, at least one other interface of described MN are carried out preferentially Level sequence, chooses the highest interface of priority as target interface.
6. according to the method described in any one of claim 1-5, it is characterised in that described logical Cross the Mobile Access Gateway MAG that a described LMA accesses to described target interface to send and take Enhancing data flow handoff signaling with the mailing address prefix of described data stream includes:
The enhancing of the mailing address prefix carrying described data stream is sent to a described LMA Data flow handoff signaling；Described enhancing data flow handoff signaling also carries the mark of described MN Knowledge, the interface identifier of described target interface, so that a LMA is according to the mark of described MN Know and the interface identifier of described target interface determines the MAG that described target interface accesses, and obtain Take the address information of described MAG, according to the address information of described MAG to described MAG Send described enhancing data flow handoff signaling.
7. according to the method described in any one of claim 1-5, it is characterised in that described logical Cross the Mobile Access Gateway MAG that a described LMA accesses to described target interface to send and take Enhancing data flow handoff signaling with the mailing address prefix of described data stream includes:
Inquiry signaling is sent to a described LMA；Described inquiry signaling carry described The mark of MN, the interface identifier of described target interface, so that a LMA is according to described The mark of MN and the interface identifier of described target interface determine what described target interface accessed MAG, and obtain the address information of described MAG, and return to the ground carrying described MAG The inquiry response signaling of location information；
Receive the inquiry of the address information carrying described MAG that a described LMA sends Response signaling；
Address information according to described MAG sends to described MAG and carries described data stream The enhancing data flow handoff signaling of mailing address prefix.
8. according to the method described in any one of claim 1-5, it is characterised in that described Determine what the data stream needing to switch in mobile node MN and described data stream need to be switched to Target interface, and before obtaining the mailing address prefix of described data stream, also include:
Receiving the report information that a MAG sends, described report information is a described MAG The interface of management all can not switch data stream time the letter of request LMA switch data stream that sends Breath.
9. the method realizing data flow handoff, it is characterised in that including:
Receive the mailing address prefix carrying data stream of local mobile anchor LMA transmission Strengthen data flow handoff signaling；Described enhancing data flow handoff signaling is not for storing mobile connecing The LMA of the relevant information of function Access Gateway MAG indicates described MAG to carry out data flow handoff Signaling；
The mailing address prefix of the data stream carried according to described enhancing data flow handoff signaling is more New routing information；
Send and strengthen data flow handoff and confirm that signaling is to LMA；Wherein, described enhancing data stream Switching confirms that signaling carries MAG log-on message, so that described LMA is according to described note Volume information is updated the MAG information of storage to MAG；Described enhancing data flow handoff is true Recognize signaling and complete data flow handoff for MAG, and to not registering the LMA of described MAG The response signaling returned.
Method the most according to claim 9, it is characterised in that described transmission strengthens number Confirm that signaling includes to LMA according to stream switching:
Send described enhancing data flow handoff confirm signaling to a LMA so that first LMA forwards described enhancing data flow handoff to confirm, and signaling is to LMA.
11. methods according to claim 9, it is characterised in that described transmission strengthens number Confirm that signaling includes to LMA according to stream switching:
According to the configuration file of MN described in the identifier lookup of MN, obtain the ground of described LMA Location information；
Address information according to described LMA sends described enhancing data flow handoff and confirms signaling extremely Described LMA.
12. according to the method described in any one of claim 9-11, it is characterised in that in institute State the increasing receiving the mailing address prefix carrying data stream that local mobile anchor LMA sends Before strong data flow handoff signaling, also include:
Sending report information to described LMA, described report information is described MAG management Interface all can not switch data stream time send ask described LMA switch data stream information.
13. 1 kinds of methods realizing data flow handoff, it is characterised in that including:
When having detected that interface accesses, according to mark and the described interface of mobile node MN Interface identifier, and by the configuration file of MN, obtain the local movement that described interface need to access The address information of anchor point LMA；
According to the address information of the described LMA that described interface need to access, send out to described LMA Send agent binding update messages；Described agent binding update messages carries the registration of MAG Information, so that described LMA updates the MAG of storage according to the log-on message of described MAG Information, and by data flow handoff to described interface；
Receiving the proxy binding acknowledgment messages that described LMA sends, described agent binding confirms to disappear Breath carries the mailing address prefix of data stream；
Mailing address prefix updates routing iinformation according to described data stream.
14. methods according to claim 13, it is characterised in that described according to movement The mark of node M N and the interface identifier of described interface, and by the configuration file of MN, obtain The address information taking the local mobile anchor LMA that described interface need to access includes:
The described interface identifier with described interface that identifies according to mobile node MN finds institute State the configuration file of MN, and in the configuration file of described MN, obtain described interface need to access The address information of local mobile anchor LMA.
15. methods according to claim 13, it is characterised in that described according to movement The mark of node M N and the interface identifier of described interface, and by the configuration file of MN, obtain The address information taking the local mobile anchor LMA that described interface need to access includes:
Mark and the interface mark of described interface carrying described MN is sent to strategic server The LMA address query signaling known, so that described strategic server is according to described LMA ground The identifier lookup configuration file to described MN of the MN in signaling is inquired in location, and described In the configuration file of MN, the interface identifier according to described interface finds what described interface accessed The address information of LMA, and return the address information of the LMA that described interface accesses；Described LMA address query signaling is for indicating described strategic server to go out according to the identifier lookup of interface The address information of the LMA that described interface accesses；
Receive the address information of the LMA of the described interface access that described strategic server returns.
16. 1 kinds of local mobile anchors, it is characterised in that including:
Determine unit, for determining the data stream needing in mobile node MN to switch over；
Acquiring unit, for obtaining described number according to the described described data stream determining that unit determines Mailing address prefix according to stream；
Described acquiring unit, is additionally operable to the mark according to described MN, and by described MN Configuration file obtain the interface identifier of target interface and the ground of the first local mobile anchor LMA Location information；A described LMA is the LMA of management objectives interface；
Transmitting element, for according to the address information of a described LMA, and by described the The Mobile Access Gateway MAG transmission that one LMA accesses to described target interface carries described The enhancing data flow handoff signaling of the mailing address prefix of the described data stream that acquiring unit obtains, So that described MAG is according to the described data stream carried in described enhancing data flow handoff signaling Mailing address prefix updates routing iinformation and return enhancing data flow handoff confirm signaling；Described Strengthen the LMA instruction that data flow handoff signaling is the relevant information for not storing MAG Described MAG carries out the signaling of data flow handoff；
First receives unit, confirms signaling for receiving the enhancing data flow handoff of feedback；Described Strengthen data flow handoff and confirm that signaling completes data flow handoff for MAG, and to not registration The response signaling that the LMA of described MAG returns；Described enhancing data flow handoff confirms signaling Carry the log-on message of described MAG；
Updating block, updates the MAG letter of storage for the log-on message according to described MAG Breath.
17. local mobile anchors according to claim 16, it is characterised in that also wrap Include:
Search unit, for the configuration file of the identifier lookup according to described MN to described MN；
Described acquiring unit specifically for, according to searching the configuration of described MN that unit finds In file record at least one other interface determine the target that described data stream need to be switched to Interface, obtains interface identifier and the address information of a LMA of described target interface；Described Other interfaces be described MN total interface in do not have with needing the interface carrying out data flow handoff There is the interface accessing same LMA.
18. local mobile anchors according to claim 16, it is characterised in that described Acquiring unit includes: signaling sending module and signaling response receiver module；
Described signaling sending module, connects for sending the mark carrying MN to strategic server Mouth demand signalling, so that described strategic server is according to the MN in described interface requests signaling Identifier lookup in the configuration file of described MN, and remember in the configuration file of described MN At least one other interface of record determine the target interface that described data stream need to be switched to, and returns Return interface identifier and the address information of a LMA of described target interface；Described interface requests Signaling is for indicating described strategic server to determine data flow handoff in the configuration file of MN Target interface；
Described signaling response receiver module, the target returned for receiving described strategic server connects The interface identifier of mouth and the address information of a described LMA.
19. local mobile anchors according to claim 17, it is characterised in that described Acquiring unit includes: choose module, acquisition module, the first sending module, the first receiver module；
Described choose module, for the described MN of record in the configuration file of described MN At least one other interface in choose any one interface as target interface；
Described acquisition module, if managing by a LMA for described target interface, then passes through The configuration file of described MN obtains the address information of a described LMA；
Described first sending module, is used for the address information according to a described LMA to described Oneth LMA sends handover request information；Described handover request information is to a described LMA The request sent is by the information of data flow handoff to target interface；
Described first receiver module, for receiving the switching confirmation letter that a described LMA sends Breath；If the information that described switching confirmation is response traffic switching, it is determined that target interface.
20. local mobile anchors according to claim 17, it is characterised in that described Acquiring unit includes: the second sending module, the second receiver module, arranges module and determines module；
Described second sending module, for according to described in record in the configuration file of described MN The address information of the LMA that other interfaces of at least one of MN are corresponding, to described MN extremely The LMA that few other interfaces are corresponding all sends query load signaling, so that described MN LMA corresponding at least one other interface receive query load signaling after, all return institute State the corresponding load information of at least one other interface of MN；
Described second receiver module is corresponding for receiving at least one other interface of described MN LMA return load information；
Described arrangement module, for according to described receiver module receive described at least one load At least one other interface of described MN are carried out prioritization by information；
Described determine module, for discharge according to described arrangement module at least the one of described MN The priority orders of other interfaces individual chooses the highest interface of priority as target interface.
21. exist according to the local mobile anchor described in any one of claim 16-20, its feature In, described transmitting element specifically for:
The enhancing of the mailing address prefix carrying described data stream is sent to a described LMA Data flow handoff signaling；Described enhancing data flow handoff signaling also carries the mark of described MN Knowledge, the interface identifier of described target interface, so that a LMA is according to the mark of described MN Know and the interface identifier of described target interface determines the MAG that described target interface accesses, and obtain Take the address information of described MAG, according to the address information of described MAG to described MAG Send described enhancing data flow handoff signaling.
22. exist according to the local mobile anchor described in any one of claim 16-20, its feature In, described transmitting element includes: enquiry module, receiver module and sending module；
Described enquiry module, for sending inquiry signaling to a described LMA；Described inquiry Signaling carries the mark of described MN, the interface identifier of described target interface, so that the One LMA determines described mesh according to the mark of described MN and the interface identifier of described target interface The MAG that tag splice mouth accesses, and obtain the address information of described MAG, return and carry State the inquiry response signaling of the address information of MAG；
Described receiver module, for receive described oneth LMA return carry described MAG The inquiry response signaling of address information；
Described sending module, for sending out to described MAG according to the address information of described MAG Send the enhancing data flow handoff signaling of the mailing address prefix carrying described data stream.
23. exist according to the local mobile anchor described in any one of claim 16-20, its feature In, also include:
Second receives unit, for receiving the report information that a MAG sends, described report Information be described oneth MAG management interface all can not switch data stream time send request The information of LMA switch data stream.
24. 1 kinds of Mobile Access Gateways, it is characterised in that including:
Receive unit, carry data stream for receive that local mobile anchor LMA sends The enhancing data flow handoff signaling of mailing address prefix；Described enhancing data flow handoff signaling is used for The LMA of the relevant information not storing Mobile Access Gateway MAG indicates described MAG to enter The signaling of row data flow handoff；
Updating block, for the described enhancing data flow handoff letter received according to described reception unit The mailing address prefix updates routing iinformation of the data stream that order is carried；
Transmitting element, is used for sending enhancing data flow handoff and confirms that signaling is to LMA；Wherein, Described enhancing data flow handoff confirms that signaling carries MAG log-on message, so that described LMA updates the MAG information of storage according to described log-on message to MAG；Described enhancing Data flow handoff confirms that signaling completes data flow handoff for MAG, and described to not registration The response signaling that the LMA of MAG returns.
25. Mobile Access Gateways according to claim 24, it is characterised in that described Transmitting element specifically for, send described enhancing data flow handoff confirm signaling to a LMA, So that a LMA forwards described enhancing data flow handoff to confirm, signaling is to LMA.
26. Mobile Access Gateways according to claim 24, it is characterised in that also wrap Include: search unit, for the configuration file according to MN described in the identifier lookup of MN, obtain The address information of described LMA；
Described transmitting element is specifically for, the described LMA searched according to described lookup unit Address information sends described enhancing data flow handoff and confirms signaling extremely described LMA.
27. exist according to the Mobile Access Gateway described in any one of claim 24-26, its feature In,
Described transmitting element, is additionally operable to send report information to described LMA, and described report is believed Breath be described MAG management interface all can not switch data stream time send request described in The information of LMA switch data stream.
28. 1 kinds of Mobile Access Gateways, it is characterised in that including:
Detector unit, for detecting whether there is interface to access；
Acquiring unit, for the mark according to mobile node MN and the interface mark of described interface Know, and by the configuration file of MN, obtain the local mobile anchor that described interface need to access The address information of LMA；
Transmitting element, described in the described interface for obtaining according to described acquiring unit need to access The address information of LMA, sends agent binding update messages to described LMA；Described agency ties up Fixed more new information carries the log-on message of MAG, so that described LMA is according to described The log-on message of MAG updates the MAG information of storage, and by data flow handoff to described in connect Mouthful；
Receive unit, for receiving the proxy binding acknowledgment messages that described LMA sends, described Proxy binding acknowledgment messages carries the mailing address prefix of data stream；
Updating block, the mailing address of the described data stream for receiving according to shown reception unit Prefix updates routing iinformation.
29. Mobile Access Gateways according to claim 28, it is characterised in that also wrap Include:
Search unit, for the described mark according to mobile node MN and the interface of described interface Identifier lookup is to the configuration file of described MN；
Described acquiring unit have for, the configuration file of described MN obtains described interface The address information of the local mobile anchor LMA that need to access.
30. Mobile Access Gateways according to claim 28, it is characterised in that described Acquiring unit includes: sending module and receiver module；
Described sending module, for strategic server send carry described MN mark and The LMA address query signaling of the interface identifier of described interface, so that described strategic server Identifier lookup according to the MN in described LMA address query signaling is to the configuration of described MN File, and interface identifier according to described interface finds institute in the configuration file of described MN State the address information of the LMA that interface accesses, and return to the ground of the LMA that described interface accesses Location information；Described LMA address query signaling is used for indicating described strategic server according to interface Identifier lookup go out the address information of LMA that described interface accesses；
Described receiver module, the described interface returned for receiving described strategic server accesses The address information of LMA.
31. 1 kinds of systems realizing data flow handoff, it is characterised in that including: first is local Mobile anchor point, the second local mobile anchor, the first Mobile Access Gateway, the second Mobile Access Network Close and mobile node；
Described second local mobile anchor is that this locality described in any one of claim 16-23 is mobile Anchor point；
Described second Mobile Access Gateway, connects for the movement described in any one of claim 24-27 Function Access Gateway；
Described first Mobile Access Gateway is the mobile access described in any one of claim 28-30 Gateway.
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