CN103516819B - IP address or prefix management method and system - Google Patents
IP address or prefix management method and system Download PDFInfo
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Abstract
The present invention relates to a kind of method and systems of IP address management, this method comprises: address administration network element or functional unit are the terminal dynamic IP address allocation or prefix when accessing terminal to network；When after the terminal generation mobile handoff and needing to discharge the IP address or prefix of the terminal, triggering message currently is sent to the address administration network element or functional unit for the network element of the terminal service, discharges the IP address or prefix to trigger the address administration network element or functional unit；The address administration network element or functional unit receive the triggering message, discharge the IP address or prefix.The method of the present invention and system solve the problems, such as that the IP address resource of dynamic allocation is easily consumed totally, improve resource utilization.
Description
Technical field
The present invention relates to mobile communication field more particularly to a kind of IP address or prefix management method and system.
Background technique
Transmission control protocol/Internet Protocol (Transmission Control Protocol/Internet
Protocol, TCP/IP), do not consider that terminal can there is a situation where topology locations to change in initial designs, i.e. ICP/IP protocol
Itself do not support mobility.Demand with user to mobility and information steeply rises, and more and more people wish in movement
During access internet at high speed, obtain the information of urgent need, complete the thing for wanting to do.Therefore, mobile Internet becomes not
Carry out the developing direction of internet, but conventional TCP/IP agreement does not support ambulant defect, so that the movement to mobile node
Property management become a great problem that faces of mobile Internet.
In order to solve the problems, such as mobile management, the popular mobile management technology of industry includes mobile IP (Mobile
IP, MIP), proxy-mobile IP (Proxy MIP, PMIP), universal tunnel tunneling (Generic Tunnel Protocol)
Deng.The common feature of these technologies is the introduction of fixed anchor point (Anchor) to realize the mobile management to mobile node.Example
Such as, MIP agreement uses local mobility anchor as anchor point, PMIP agreement using home agent (Home agent, HA)
(Local Mobility Anchor, LMA) uses Gateway GPRS Support Node (Gateway GPRS as anchor point, GTP
Support Node, GGSN) it is used as anchor point.But these mobility management schemes based on anchor point will lead to road well known to industry
By detour problem, as shown in Figure 1.In Fig. 1, mobile terminal (Mobile Node, referred to as MN) communicates with opposite end, and (this is logical
Letter opposite end can be a server or another terminal in network, indicated in figure with service server) between communication begin
It needs to detour to the anchor point of the mobile terminal eventually, even if terminal is currently far from anchor point and close to Correspondent Node (Correspondent
Node, referred to as CN), the solid line in Fig. 1 illustrates the routing of detour.On the one hand routing detour will lead to the biography of waste operator
Transmission bearing resource, is unfavorable for save the cost；On the other hand the time delay for increasing MN and CN transmitting-receiving IP data packet is unfavorable for improving and use
The business experience at family；A possibility that IP packet that another further aspect is increased terminal meets with network congestion in online transmitting, causes
(e.g., the real time business such as voice, video, game on line) are obstructed or even be can not achieve to terminal traffic.
Based on above-mentioned routing detour problem, there is relevant solution at present, if by dynamic IP addressing dispenser
System is applied to the program and brings the problem of IP address resource is consumed totally in the limited situation of IP address resource.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of method and system of IP address management, to solve dynamic point
The problem of IP address resource matched easily is consumed totally.
In order to solve the above technical problems, the present invention provides a kind of IP address or the management methods of prefix, this method comprises:
When accessing terminal to network, address administration network element or functional unit are the terminal dynamic IP address allocation or prefix；
It is currently the end when after the terminal generation mobile handoff and needing to discharge the IP address or prefix of the terminal
Hold the network element of service to send triggering message to the address administration network element or functional unit, with trigger the address administration network element or
Functional unit discharges the IP address or prefix；
The address administration network element or functional unit receive the triggering message, discharge the IP address or prefix.
Further, there are multiple address administration network elements or functional unit in communication network, it is described currently to be taken for terminal
Before the network element of business sends the message to the address administration network element or functional unit, this method further include: described current for eventually
The step of holding the network element of service preset or obtaining IP address or prefix attaching information, the IP address or prefix attaching information are used for
Indicate the address administration network element or functional unit of the IP address for needing to discharge or prefix ownership；
The current network element for terminal service is according to the IP address or prefix attaching information to the address administration net
Member or functional unit send triggering message.
Optionally, described currently be the network element of terminal service is that location management services network element or context record network element, institute
Stating address administration network element is the first access routing network element with address management function；
The location management network element (LMS) or context record network element obtain the side of the IP address or prefix attaching information
Method is following any:
The first access routing network element is Xiang Suoshu location management clothes after IP address described in the terminal distribution or prefix
Business network element or context record network element send IP address or prefix attaching information；Or,
When the terminal accesses routing network element from source and switches to purpose access routing network element, source access routing network element to
The purpose access routing network element sends the IP address or prefix attaching information；The purpose access routes network element to institute's rheme
It sets management service network element or context record network element sends the IP address or prefix attaching information, the source access routing network element
Including the first access routing network element；
When needing to discharge the IP address or prefix of the terminal, the access routing network element that terminal currently connects, which is sent, carries touching
The message shown of bristling with anger or triggering instruction message, to indicate described in the location management service network element or the triggering of context record network element
First access routing network element discharges the IP address or prefix；
To institute after the location management network element or the context record network element reception triggering instruction or triggering instruction message
It states the first access routing network element and sends the triggering message.
Preferably, the purpose access routing network element notifies the location management service network element or context record network element to delete
The IP address or prefix attaching information are sent when except the IP address or the relevant record information of prefix.
Alternatively, described currently be the network element of terminal service is to switch latter linked access to route network element, the address
Managed network element is the first access routing network element with address management function；
It is following that the latter linked access routing network element of switching, which obtains the IP address or the method for prefix attaching information,
It is any:
After the first access routing network element is IP address or prefix described in the terminal distribution, to location management service network
Member or context record network element send IP address or prefix attaching information, the location management service network element or context record net
Member records the IP address or prefix attaching information；The location management services network element or context record network element to the switching
Latter linked access routing network element sends the IP address or prefix attaching information；Or,
When the terminal switches to switching latter linked access routing network element, the access routing network element that connects before switching is to institute
It states the latter linked access routing network element of switching and sends the IP address or prefix attaching information.
Preferably, the location management service network element or context record network element receive the latter linked access of switching
After the notice for routing the deletion IP address or the relevant record information of prefix that network element is sent, connect to the switching is latter linked
Enter to route network element and sends the IP address or prefix attaching information.
Optionally, location management service network element includes the location management service node of several interconnection, described first,
Source or purpose access routing network element are connect with some location management service node, some described location management service node receives
After message related with the IP address or prefix or information that network element connected to it is sent, taken according to preset location management
Business node between algorithm determine be responsible for the IP address or prefix management location management service node and to its forwarding with it is described
IP address or the related message of prefix or information.
Alternatively, described currently be the network element of terminal service is to switch latter linked access to route network element or location management
Service network element.
Specifically, the address administration network element includes the address distribution node of several interconnection, some address distribution node
After receiving the message related with the IP address or prefix or information that network element connected to it is sent, according to preset address
Algorithm between distribution node determines the address distribution node for being responsible for the IP address or prefix management and forwards and the IP to it
Address or the related message of prefix or information.
In order to solve aforementioned technical problem, the present invention also provides a kind of IP address or prefix management system, the system packets
It includes:
The address assignment module of address administration network element or functional unit, in accessing terminal to network, being the terminal
Dynamic IP address allocation or prefix；
Address discharges trigger module, is currently the network element of the terminal service after the terminal mobile handoff, is used for
In the IP address or prefix for needing to discharge the terminal, Xiang Suoshu address administration network element or functional unit send triggering message,
The IP address or prefix are discharged to trigger the address administration network element or functional unit；
The address release module of the address administration network element or functional unit discharges institute for receiving the triggering message
State IP address or prefix.
The management method and system of IP address or prefix of the present invention, under IP address or the limited situation of prefix resource, i.e.,
Make terminal that mobile handoff occur, the network element release IP address or prefix of responsible IP address or prefix management can also be triggered in time,
It solves the problems, such as that the IP address resource of dynamic allocation is easily consumed totally, improves resource utilization.
Detailed description of the invention
Fig. 1 is the schematic diagram that detour is routed present in the existing mobility management scheme based on anchor point；
Fig. 2 is the schematic diagram for solving the mobility management scheme of routing detour problem；
Fig. 3 is the schematic diagram of IP address of the present invention or prefix management method；
Fig. 4 is the flow diagram of IP address of the present invention or prefix management method embodiment one；
Fig. 5 is the flow diagram of IP address of the present invention or prefix management method embodiment two；
Fig. 6 is the flow diagram of IP address of the present invention or prefix management method embodiment three；
Fig. 7 is couple in router and location management server in IP address of the present invention or prefix management method example IV
The schematic diagram of connection；
Fig. 8 is the network element connection schematic diagram in IP address of the present invention or prefix management method embodiment five；
Fig. 9 is the flow diagram of IP address of the present invention or prefix management method embodiment 5.
Figure 10 is the modular structure schematic diagram of IP address of the present invention or prefix management system；
Figure 11 is another modular structure schematic diagram of IP address of the present invention or prefix management system；
Figure 12 is that the present invention corresponds to the IP address of embodiment of the method one or the modular structure schematic diagram of prefix management system；
Figure 13 is that the modular structure of IP address or prefix management system that the present invention corresponds to embodiment of the method two and three is shown
It is intended to；
Figure 14 is that the present invention corresponds to the IP address of embodiment of the method two and three or another module knot of prefix management system
Structure schematic diagram.
Specific embodiment
There are problems that routing detour the above-mentioned mobile management technology based on anchor point, there is a kind of shifting in the related technology
Mobility management technology can solve the problem, as shown in Figure 2.Couple in router (Access Router, abbreviation AR) and Position Pipe
Reason server (Location Management Server, abbreviation LMS) is the core network element of the mobile management technology.AR's
Main function is responsible for user's access, distributes IP address for user terminal；The effect of LMS be record user terminal IP address and
Relationship between terminal current location records " IP address-position " corresponding relationship of user terminal.Above-mentioned location information is eventually
Hold the IP address of the AR currently connected.It is worth noting that service server, which is also required to AR in this way, is linked into network.On
State for example following verbal description of basic principle of mobile management technology:
Terminal is connected to currently is terminal distribution IP address for the AR of its service, AR, and it is current to LMS to update the terminal
" IP address-position " corresponding relationship.When service server sends datagram to terminal, the purpose IP address of the data message
It is the IP address of terminal.When data message reaches AR (AR3 shown in Fig. 2) of service server connection, AR3 first determines above-mentioned end
The position at end.When that can not determine, then AR3 inquires the current position of terminal to LMS with the IP address of terminal.It is assumed that present terminal
It is connected to AR1, by inquiry, AR3 would know that the current position of terminal is in AR1.Then data message is carried out tunnel envelope by AR3
The destination address in tunnel, is set as the address of AR1, sends AR1 for data message by dress.After AR1 receives above-mentioned message, tunnel is released
Road encapsulation, and data message is delivered to terminal.When terminal has switched currently AR for its service due to mobile, with from AR1
It is switched to for AR2, AR2 needs to update current " IP address-position " corresponding relationship of the terminal to LMS, by updating location information
For the IP address of AR2.The AR3 of service server connection can also acquire corresponding notice, so that AR3 can be by above-mentioned datagram
Text is sent directly to AR2, then sends terminal for message by AR2.
It as described above, is one of function of AR for terminal distribution IP address.When terminal is connected to AR1, AR1 is its point
With IP address.Using dynamic IP addressing distribution by the way of when, AR1 can be taken from the IP address pond of self-management one it is unused
IP address distribute to the terminal, while the IP address being recorded as having distributed.After obtaining IP address, terminal can be moved simultaneously
It is switched to AR2.If terminal discharges the IP address (e.g., logout) of oneself at this time, also only AR2 can be known, AR1 is simultaneously unaware of.AR1
It can think that above-mentioned IP address is allocated always, so that the IP address cannot be released, another can not be distributed to
Terminal.Over time, the IP address Pooled resources of AR1 management can be consumed totally, can not serve the terminal newly accessed.Similarly,
If AR is managed IP address prefix and IP address prefix resource is limited, there is also the same problems.
As shown in figure 3, the management method of IP address provided by the invention or prefix includes:
Step 3001: when accessing terminal to network, address administration network element or functional unit are for terminal dynamic allocation IP
Location or prefix；
Step 3002: when after the terminal generation mobile handoff and needing to discharge the IP address or prefix of the terminal, when
The preceding network element for the terminal service sends triggering message to the address administration network element or functional unit, to trigger the address
Managed network element or functional unit discharge the IP address or prefix；
Have multiple address administration network elements or functional unit in communication network, the current network element for terminal service to
Before the address administration network element or functional unit send the message, this method further include: the current net for terminal service
The step of member is preset or obtains IP address or prefix attaching information, the IP address or prefix attaching information are used to indicate the need
The address administration network element or functional unit of the IP address or prefix to be discharged ownership；
The current network element for terminal service is according to the IP address or prefix attaching information to the address administration net
Member or functional unit send triggering message.
Step 3003: the address administration network element or functional unit receive the triggering message, discharge the IP address or
Prefix.
The embodiment of the present invention is described in detail below in conjunction with attached drawing.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
Embodiment one
Fig. 4 show the first embodiment of the present invention, in this embodiment it is assumed that each couple in router (AR) has certainly
The IP address pond (IP Address Pool) of oneself management, it is meant that be sent to the data message for belonging to the IP address in the IP address pond
It will be routed on the AR.In this embodiment, location management service currently is corresponded to for the network element of terminal service in Fig. 3
Network element or context record network element, address administration network element correspond to the first access routing network element with address management function, tool
Body is AR1, comprising the following steps:
Step 301: accessing terminal to network is attached to couple in router 1 (AR1), and requests distribution IP address to AR1.
It is worth noting that couple in router described in the present invention corresponds to different network elements in different network environments
Or logic functional block, specifically, couple in router (AR) of the present invention is corresponding if terminal is accessed by GPRS network
In Gateway GPRS Support Node (Gateway GPRS Support Node, abbreviation GGSN)；If terminal passes through LET network insertion,
Then AR corresponds to PDN Gateway (Packet Data Network Gateway, abbreviation PGW)；If terminal is connect by ADSL network
Enter, then AR corresponds to BAS Broadband Access Server (Broadband Remote Access Server, abbreviation BRAS)；It is moved if being used in
Dynamic IP (Mobile IP, abbreviation MIP) technology, then AR corresponds to home agent (Home Agent) network element；If for acting on behalf of movement
IP (Proxy Mobil IP, abbreviation PMIP) technology, then AR corresponds to local mobility anchor (Local Mobility
) or Mobile Access Gateway (Mobile Access Gateway) Anchor.It is worth noting that this is not weight of the invention
It puts and the limitation to invention should not be become.
Step 302: the mode that network decision uses dynamic IP addressing to distribute is terminal distribution IP address, as described above,
AR1 selects a suitable IP address to distribute to terminal from self-administered IP address pond.The suitable general root of IP address
It is configured according to the strategy of network, for example, selection one is not currently assigned to the IP address of other terminals.
The IP address of above-mentioned selection is returned to terminal by step 303:AR1.
Step 304-305:AR1 sends message to location management server (LMS), by the IP address of above-mentioned terminal and is somebody's turn to do
The location information of terminal is sent to LMS.As described above, the location information of terminal is the mark of AR1 oneself, preferably AR1's
IP address.LMS records " IP address-location information " corresponding relationship of the terminal.
It is worth noting that AR1 carries instruction preferably in above-mentioned message at this time, to notify LMS that above-mentioned IP address is
AR1 distribution, i.e., the IP address belongs to the IP address pond (referred to as IP address attaching information) that AR1 is managed.At this point, LMS is preferred
The attaching information of the IP address is also stored in local, for example, the above-mentioned corresponding system of extension is " IP address-location information-ownership
AR".It should also be noted that, the AR for terminal distribution IP address can also be known as the ownership AR of the terminal, then above-mentioned finger
Showing can also be to notify that this AR of LMS (i.e. above-mentioned AR1) is the ownership AR of the terminal.
Step 306:LMS returns to response message to AR1.
Step 307: after obtaining IP address from AR1, terminal just uses the IP address to be communicated as its source address.Work as end
When holding movement and switching its current connected AR (it is assumed that being switched to AR2), new AR2, which needs to obtain the terminal first, currently to be made
IP address.For example, the signaling interacted between AR1 and AR2 obtains the IP address in handoff procedure.
Step 308-309: after getting above-mentioned IP address, location information of the AR2 to LMS more new terminal, the location information
Such as the above-mentioned mark for AR2, the preferably IP address of AR2.
It is worth noting that AR2 is sent more to LMS since the current IP address of terminal is not that AR2 is distributed
The instruction as described in step 304 is not carried in new information.The location information of LMS more new terminal is the IP address of AR2 at this time, and IP
The attaching information of address is still constant (being still AR1).
Step 310:LMS returns to response message to AR2.
Step 311: terminal be connected to after AR2 the IP address that can continue to use AR1 as its distribution as source address into
Row communication.(e.g., terminal exiting network, attachment removal or the network forced IP for receiving terminal when needing to discharge the IP address of terminal
The scene of location), AR2 will receive corresponding notice.For example, AR2 can receive relevant instruction from terminal when terminal exiting network, or
Instruction is received from the access net connected under AR2.How to receive instruction is not emphasis of the invention, but should not be become to the present invention
Limitation.
Step 312:AR2 sends the instruction message for being used for delete position information, the IP address of carried terminal to LMS.LMS is deleted
Except above-mentioned " IP address-location information " or " IP address-location information-ownership AR " corresponding relationship of the IP address.
Preferably, AR2 carries an instruction in above-mentioned message, is used to indicate on LMS to the ownership AR of the IP address and goes
Discharge the IP address (that is, to the IP address for discharging the terminal on the ownership AR of terminal)
Step 313:LMS deletes the above-mentioned corresponding relationship of the IP address after receiving above-mentioned message.It is worth explanation
It is that LMS is also needed to be implemented to trigger the ownership AR of the IP address and discharge the operation of the IP address.
LMS is firstly the need of the ownership AR (that is, the ownership AR for determining above-mentioned terminal) for determining the IP address.Preferably, according to
AR1 described in step 304 is sent to LMS described in the instruction and step 305 of LMS and saves the attaching information of the IP address
In local operation, LMS can according to the IP address locally get the IP address attaching information (that is, the AR belonged to,
It is herein AR1).For example, LMS is searched from the corresponding relationship of above-mentioned " IP address-location information-ownership AR ".
The method that another kind determines the ownership AR of the IP address is, dependent on configuration.Specifically, operator can be
Method in LMS by configuring, the information in the IP address pond that all AR are managed is pre-configured in LMS.At this point, AR can root
The ownership AR of the IP address can be judged according to the IP address and above-mentioned preconfigured information.When using this method,
In step 304 step, AR1 can not need to send above-mentioned instruction to LMS, and LMS does not need to record above-mentioned IP address ownership letter yet
Breath.
Step 314:LMS returns to response message to AR2.
Step 315-316: according to method described in step 313, in the attaching information for the IP address that above-mentioned terminal has been determined
After, LMS sends to the AR (being AR1 here) of ownership and triggers its message for discharging the IP address, and message carries the IP address.It receives
To after the message, AR1 discharges the IP address, such as the IP address is given back it to the IP of its management labeled as unallocated
Address pool.
It is worth noting that LMS can just be executed as described in step 313 according to instruction described in step 312 is received
The operation of the ownership AR of positioning terminal IP address and described here the AR is notified to discharge the operation of the IP address.
Step 317: preferably, AR1 returns to response message to LMS.
It, can after terminal as described above gets the dynamic IP addressing for distributing to it from AR1 according to the method for the present embodiment
To use the IP address to be communicated as raw address with opposite end.It is worth noting that when this terminal is in the state for being connected to AR1
It (e.g., does not move when lower its IP address of release, or is moved to after AR2 and is moved to AR1), AR1 can be directly obtained
The notice (mechanism of similar step 311) of the event, AR1 can directly discharge the IP address.AR1 still needs to be sent to LMS
The message of delete position information as described in step 312, but do not carry instruction described in step 312, at this point, due to receiving
The instruction is not carried in message, LMS does not just execute the operation that above-mentioned triggering ownership AR discharges certain IP address.Alternatively, if LMS
It was found that the sender for sending the message of delete position information is exactly the ownership AR of above-mentioned IP address, above-mentioned triggering is not just executed and is returned
Belong to the operation that AR discharges certain IP address.
The method described by above-mentioned the present embodiment can enable the IP address that AR1 is terminal dynamic allocation in terminal
Discharging its IP address can normally be discharged by the AR later.
It should also be noted that, (AR1 is the source AR of terminal, and AR2 is terminal during terminal is switched to AR2 from AR1
Target AR), need to interact between AR1 and AR2 some signalings be used to transmit the range of information such as the context of terminal.?
During switching, the attaching information of the IP address of terminal can be passed to target AR (that is, the ownership AR of terminal is believed by source AR
Breath is transmitted to target AR from source AR).In the present embodiment, the IP address of terminal is AR1 distribution, according to side described here
Method, in handoff procedure, AR2 can know that the IP address belongs to AR1 (that is, the ownership AR of terminal is AR1).It then, can be with
The attaching information is sent to LMS by switching latter linked AR (such as AR2 or secondary switches latter linked AR3).For example, such as this reality
It applies described in example, it is preferable that in step 312, AR2, can will be above-mentioned in the message for sending above-mentioned delete position information to LMS
Attaching information is sent to LMS.By such method, LMS can also determine the ownership AR of IP address of terminal, and then trigger the AR
Discharge above-mentioned IP address.In this way, AR1 is there is no need to send above-mentioned instruction to LMS, and LMS is without note in step 304 step
Record the attaching information of IP address.
It should also be noted that, network includes also generally the network element for recording terminal contexts, such as the mobility pipe in LTE
It manages entity (Mobility Management Entity, abbreviation MME), for another example policy database (Policy defined in PMIP
Database), these network elements can be used to save the current IP address information of terminal.In the present embodiment, when AR1 is terminal point
After having matched IP address, AR1 needs the IP address being reported to said network element；When terminal is switched to AR2, AR2 can be from the net
The currently used IP address of terminal is obtained in member；When discharging IP address of terminal, AR2 needs to indicate that said network element deletes the terminal
IP address.Method as described in the above-mentioned 301-317 of the present embodiment, with the network element of the record terminal contexts replace LMS (in addition to
Outside the function of recording terminal " IP address-location information "), it also may be implemented to trigger the IP address when discharging IP address of terminal
Ownership AR discharges the function of the IP address, such as: AR1 notifies the network element certainly when the IP address of terminal is updated so far network element
Oneself is the ownership AR of the IP address；When AR2 indicates the IP address of terminal of the network element deletion record, which disappears to AR1 transmission
Breath discharges the IP address to trigger AR1；For another example, AR1 does not inform it certainly when the IP address of terminal is updated so far network element
Oneself is the ownership AR of the IP address, but the information is informed AR2 in above-mentioned hand off signaling.Indicate that the network element is deleted in AR2
Except record IP address of terminal when, while informing the ownership AR (i.e. AR1) of this IP address of the network element, then triggered by the network element
AR1 (ownership AR) discharges this IP address.In short, the present embodiment above method and deformation method are in the premise not conflicted
Under, it can be adapted for the network element of the record terminal context information.Principle is identical, repeats no more.
Embodiment two
Fig. 5 show the second embodiment of the present invention, in the present embodiment, also assumes that each couple in router (AR)
There is self-administered IP address pond (IP Address Pool), and the current network element that service is currently connected for terminal in Fig. 3
It corresponds to switch latter linked access routing network element, specially AR2 in the present embodiment, the address administration network element corresponds to have
Have address management function first, which is accessed, routes network element, specially AR1, comprising the following steps:
Step 401: with step 301-311.
Step 402: during discharging IP address of terminal, as described in step 312-314, AR2 is sent to LMS for deleting
Except the instruction message of location information, the IP address of carried terminal；LMS is returned after deleting information relevant to the IP address to AR2
Return response message.,
Step 403:AR2 obtains the ownership AR information of the IP address of terminal, and (in other words, AR2 obtains the ownership AR of the terminal
Information), it is specific comprising there are many methods.
Preferably, as described in step 303, AR2 can rely on local configuration information to obtain the ownership of the IP address
AR information.Specifically, operator can be by preconfigured method, by the IP of AR all in all provider domains management
Location pond information configuration is in all AR.At this point, AR2 can be according to above-mentioned IP address and preconfigured information with determining this IP
The ownership AR of location is AR1.
Preferably, another method is, in step 402, when LMS returns to response message to AR2, by above-mentioned terminal IP
The ownership AR information of location carries in the response message, and AR2 determines that ownership AR is AR1 according to the response message.At this time, it may be necessary to such as
The method of step 304-305, in step 401, the ownership AR that AR1 needs that LMS oneself is notified to be the IP address of terminal.
Preferably, another method is, as described in embodiment one, AR2 in the network element of record terminal contexts from obtaining
State the ownership AR of IP address of terminal.Specifically, AR2 is when notifying the IP address of the network element terminal to discharge, the network element to
The information of ownership AR is carried in the response message that AR2 is returned, AR2 determines that the ownership AR of the IP address of terminal is according to the message
AR1。
Preferably, another method is that as described embodiments, when terminal switches current AR, target AR can be from source
AR gets the ownership AR information of IP address of terminal, then the information interacted when AR2 can switch AR according to terminal with AR1 determines eventually
Holding the ownership AR of IP address is AR1.
Step 404-405: after the information (that is, the ownership AR for determining terminal) for the ownership AR for determining IP address of terminal, AR2
It is sent to ownership AR (being AR1 in the present embodiment) and triggers its message for discharging above-mentioned IP address, message carries the IP address.
After receiving above-mentioned message, AR1 discharges the IP address, such as the IP address is given back it to its management labeled as unallocated
IP address pond.
Step 406: preferably, AR1 returns to response message to AR2.
It is worth noting that being switched to (AR2) after current AR in terminal, AR2 can be at any time to above-mentioned LMS
Or the ownership AR of the network element request of the above-mentioned record terminal contexts IP address of terminal.For example, being updated in AR2 to LMS
When the location information of terminal, know that the ownership AR of the IP address of terminal (in other words, is obtained in the response message that LMS is returned to AR2
Know the ownership AR of the terminal)；It for another example, should when AR2 requests the IP address of the terminal to the network element of above-mentioned record terminal contexts
The ownership AR information carrying of the IP address is returned to AR by network element in response message.
Also it is worth noting that, such as above-mentioned target AR can get the ownership AR information of IP address of terminal from source AR.Then
When terminal is switched to AR2 (target AR) from AR1 (source AR), AR2 can from AR1 by message relevant to switching (e.g., up and down
Text interaction signaling) know the ownership AR of IP address of terminal, and it is stored in local (e.g., contextual information relevant to the terminal
In).So, when terminal is switched to third AR (target AR) from AR2 (source AR), the third AR can from AR2 by with
Switch relevant message, knows the ownership AR of IP address of terminal, be equally also stored in local.
Embodiment three
It is worth explanation, deformation appropriate can be done to mobile management technology shown in Fig. 2, a kind of deformation is by LMS
It is set with couple in router (AR) conjunction, AR at this time has the function of record terminal " position IP- " relationship simultaneously.In general, exist
In this deployment model, " IP address-location information " of terminal, which can be recorded in the ownership AR of the IP address, (namely to be recorded
In the ownership AR of terminal).In this deformation technology, the method that aforementioned present invention proposes equally is applicable in, as shown in fig. 6, tool
Body comprises the steps of:
Step 501-503: with step 301-303.
Step 504: terminal switches the AR currently connected, and from source, AR is switched to target AR.In the present embodiment, terminal from
AR1 is switched to AR2.
Step 505: since this embodiment assumes that AR and LMS conjunction is set, AR2 needs the IP address for finding terminal first to return
The AR of category, then the location information to AR (LMS) the more new terminal.Specifically include a variety of methods:
Preferably, as described in step 403, AR2 can rely on local configuration information to obtain the ownership of the IP address
The information of AR；
Preferably, AR2 obtains the ownership AR of above-mentioned IP address of terminal from the network element of record terminal contexts；It is specific next
It says, in handoff procedure, AR2 can request the contextual information in relation to terminal from said network element, at this time can be from the network element
Get the ownership AR information of the IP address of terminal；
Preferably, as described in step 403, when terminal switches current AR, target AR can get terminal from source AR
IP address ownership AR information, the ownership AR of the IP address of terminal can be got from source AR as the AR2 of target AR at this time
Information.
Step 506-507: the ownership AR of IP address of terminal, i.e. AR1 in the present embodiment, " IP address-position of more new terminal
Confidence breath " corresponding relationship, record present terminal is attached on AR2, and preferably returns to response message to AR2.
Step 508: with step 311.
Step 509:AR2 is sent to AR1 (i.e. the ownership AR of IP address of terminal) for notifying it to delete the position of above-mentioned terminal
The message of confidence breath, the wherein IP address of carried terminal.As described in step 505, AR2 with having learned that above-mentioned terminal IP at this time
The information of the ownership AR of location.
Step 510:AR1 deletes " IP address-location information " corresponding relationship of above-mentioned terminal.
Step 511: further, AR1 discharges the IP address.It is worth noting that in the present embodiment, AR and LMS are objects
The equipment set is closed in reason.The message of step 509 is interpreted as AR2 and is sent to close the LMS that sets with AR1 at this time, which deletes its guarantor
Above-mentioned " IP address-location information " corresponding relationship deposited；Later, which closes the AR (i.e. AR1) set therewith and discharges the IP in triggering
Address.
Step 512: preferably, AR1 returns to response message to AR2.
Example IV
It is worth explanation, deformation appropriate can be done to mobile management technology shown in Fig. 2, another kind deformation is contraposition
It sets management server (LMS) and has carried out distribution deformation, that is, allow that there are multiple LMS, each LMS can directly interconnect.Fig. 7
Shown in be to be connected between each LMS and the connection method between AR and LMS, one of AR are only connected with a LMS.It can
In conversion, each AR can be connect in an arbitrary manner with each LMS.
When AR updates " IP address-location information " corresponding relationship of some terminal to LMS, what AR can be connected to it appoints
The LMS that anticipates sends message, such as AR1 sends update message to LMS1.When LMS1 receives the update message, LMS1 is determined again
Which LMS node the corresponding relationship is especially stored on.Such as LMS1 carries out Hash operation to above-mentioned IP address, obtains one
Then the mark (such as LMS2, it is also possible to be LMS1 oneself) of a specific LMS node " is believed above-mentioned IP address-position again
Breath " corresponding relationship is sent on LMS2 and is handled by LMS2.
The method of the above embodiment of the present invention is equally applicable to this deformation technology, method with principle be it is similar, only
But increase the interaction between some LMS.Such as:
In step 304, AR1 sends the message for being used for more new location information to LMS (such as LMS1), wherein carried terminal
The mark of IP address and AR1.After LMS1 receives the message, finds and should handle further according to strategy (e.g., passing through Hash operation)
The LMS node (e.g., LMS3) of the message, then above-mentioned message is transmitted to LMS3 processing.LMS3 records the " IP address-of the terminal
The corresponding relationship of location information ".Meanwhile AR1 carries an instruction preferably in the message of above-mentioned more new location information, is used for table
Bright oneself is the ownership AR of the IP address of terminal.Then likewise, LMS1 can pass it to LMS3, and saved by LMS3,
Such as it is recorded as the form of " IP address-location information-ownership AR ".
In step 312, when AR2 sends the message of delete position information to LMS2 (IP address of carried terminal),
LMS2 finds the node (being still above-mentioned LMS3) that should handle the message according further to identical strategy, and by above-mentioned message
It is transmitted to LMS3 processing.LMS3 is after deleting corresponding location information, and method described in step 315 is to terminal IP for another example
The ownership AR (AR1 i.e. in embodiment one) of location sends message, discharges the IP address to trigger it.
In another example such as the method in step 403, AR2 obtain the information approach of IP address of terminal ownership AR first is that from LMS
It obtains, then specifically, in the present embodiment, AR2 can send the message of delete position information, for example above-mentioned side of LMS2 to LMS2
Method finds the node (LMS3) for handling the message, and forwards the messages to LMS3.LMS3 after deleting corresponding location information,
The ownership AR information (directly return to AR2, or return by LMS2 to AR2) of the IP address of terminal is returned to AR2.
In short, its principle be it is identical, repeat no more.
In addition, also it is worth noting that, this deformation combines with deformation described in embodiment three, i.e. AR and LMS are closed
If while connected between each LMS by certain mode, can interconnect, method above-mentioned at this time is similarly practical.
Embodiment five
Fig. 8 show the fifth embodiment of the present invention, in this embodiment it is assumed that AR is without self-administered IP address
Pond, and special deployment is used for the network element (referred to as address allocation server) of dynamic IP address allocation, the address point in a network
It can be independently arranged with server or be set with location management server conjunction；Address allocation server can also be with distribution simultaneously
Form deployment, can be with interconnection between each address allocation server of distributed deployment, connection type is similar to above-mentioned LMS
Between connection.As shown in figure 9, comprising the following steps:
Step 801: terminal networks to its couple in router (AR1) IP address requesting.
Step 802: unlike preceding several embodiments, in the present embodiment, AR is without self-administered IP address
Pond.Then AR1 requests to be terminal distribution IP address to above-mentioned address allocation server.It is preferred that mark (e.g., the MAC of carried terminal
Location etc.).
Step 803: address allocation server selects suitable IP address to distribute to the end from the IP address pond that it is managed
End.For example, selection is not yet assigned to the IP address of other terminals.The IP address is sent to AR1 by address allocation server.
The address of the IP of above-mentioned distribution is sent to terminal by step 804:AR1, the IP address as terminal.
Step 805:AR1 will also be to the location information of location management server more new terminal, by above-mentioned IP address and certainly
The mark of body is sent to location management server, and location management server records pair of " IP address-location information " of the terminal
It should be related to.
Step 806-807: terminal is switched to target AR (e.g., AR2) from its source AR (e.g., AR1).AR2 needs to obtain terminal
Currently used IP address, using the method as described in step 307.AR2 will also update the terminal recorded in location server
" IP address-location information " corresponding relationship.
Step 808: with step 311.
Step 809:AR2 sends message to location management server, to delete the terminal " IP address-position of its record
The corresponding relationship of information ".
Step 810:AR2 also sends message to address allocation server simultaneously, the IP address of above-mentioned terminal is carried, to touch
Hair address allocation server discharges the IP address.It is worth noting that this step can be executed concurrently with step 809.
Step 811: preferred address distribution server returns to response message to access AR2.
It is worth noting that when location management server receives the message of delete position information described in step 809, it can
It is requested with being sent from location management server to address allocation server, carries the IP address of the terminal, triggering address distribution clothes
Business device discharges the IP address.Above-mentioned steps 810-811 can be without carrying out at this time.
Finally it is worth noting that, in an embodiment of the present invention, the IP address is with not distinguishing IPv4 or IPv6
Location and above-mentioned IP address can be replaced with IP prefix.For example terminal request AR1 is that its distribution IP address can replace
For terminal request, the AR1 is that it distributes IP prefix；For another example, LMS is sent to AR1 for triggering its request for discharging IP address, can
It is sent with replacing with LMS to AR1 for triggering its request for discharging IP prefix.Unlike unique, in the various embodiments described above
In expression, after terminal gets IP address, the IP address can be used and to communicate with opposite end as the source address of oneself；And it uses
After IP prefix replaces, terminal is after receiving IP prefix, it is also necessary to be generated with the method that the relevant technologies provide one or more
After IP address, the source address for reusing these IP address as oneself is communicated with opposite end.The method for generating IP address is not this
The emphasis of invention, but limitation of the present invention should not be become.
In order to realize above method, the present invention also provides a kind of IP address or prefix management systems, as shown in Figure 10, should
System includes:
The address assignment module of address administration network element or functional unit, in accessing terminal to network, being the terminal
Distribute IP address or prefix；
Address discharges trigger module, is currently the network element of the terminal service after terminal mobile handoff, for needing
When discharging the IP address or prefix of the terminal, Xiang Suoshu address administration network element or functional unit send triggering message, with touching
It sends out address administration network element described or functional unit discharges the IP address or prefix；
The address release module of the address administration network element or functional unit discharges institute for receiving the triggering message
State IP address or prefix.
Corresponding to previous embodiment one to five, it is preferable that have multiple address administration network elements or function in communication network
Unit, as shown in figure 11, the network element after terminal mobile handoff currently for the terminal service further includes address attribution information management
Module is used for preset or obtains IP address or prefix attaching information, and the IP address or prefix attaching information are used to indicate described
The address administration network element or functional unit for IP address or the prefix ownership for needing to discharge；
Address release trigger module according to the IP address or prefix attaching information to the address administration network element or
Functional unit sends triggering message.
Corresponding previous embodiment one, optionally, it is described currently be the network element of terminal service be location management service network element or
Context record network element, the address administration network element are that the access with address management function routes network element；As shown in figure 12, institute
The system of stating further includes the instruction trigger module that terminal switches latter linked access routing network element, for needing to discharge the terminal
IP address or prefix when, send carry triggering instruction message or triggering instruction message, to indicate the location management service
Network element or context record network element triggering the first access routing network element discharge the IP address or prefix；The location management
The address of network element or context record network element discharges trigger module, to institute after receiving the triggering instruction or triggering instruction message
It states the first access routing network element and sends the triggering message.
Further, as shown in figure 12, the system also includes the address attribution information transmissions of the access routing network element
Module；
The address assignment module is the ground of the access routing network element after IP address described in the terminal distribution or prefix
Location attaching information sending module, for servicing network element or context record network element transmission IP address or prefix to the location management
Attaching information；Or,
When switching the preceding access routing network element connected positioned at the terminal, the address attribution information of the access routing network element
Sending module is used to send the IP address or prefix attaching information to the latter linked access routing network element of the switching；Positioned at institute
When stating switching latter linked access routing network element, the address attribution information sending module of the access routing network element is for described
Location management services network element or context record network element sends the IP address or prefix attaching information.
Preferably, the address attribution information sending module of the access routing network element notifies the location management service network element
Or context record network element sends the IP address when deleting the IP address or the relevant record information of prefix or prefix belongs to
Information.
Corresponding to embodiment two and three, described be currently the network element of terminal service is to switch latter linked access routing network
Member, the address administration network element are that the access with address management function routes network element；
As shown in figure 13, the system also includes the attaching information sending modules and institute's rheme of the access routing network element
Set the attaching information sending module of management service network element or context record network element, wherein the ownership of the access routing network element
Information sending module is used for after the address assignment module is IP address described in the terminal distribution or prefix to Position Pipe
Reason service network element or context record network element send IP address or prefix attaching information；The location management service network element or upper and lower
The attaching information sending module of text record network element, for sending the IP address to the latter linked access routing network element of the switching
Or prefix attaching information；Or,
As shown in figure 14, the system also includes the attaching information sending modules of access routing network element, at the end
When end is cut out, the IP address or prefix attaching information are sent to the latter linked access routing network element of the switching.
Preferably, the attaching information sending module of the location management service network element or context record network element receives institute
After the notice for stating the deletion IP address or the relevant record information of prefix that the latter linked access routing network element of switching is sent, to
The latter linked access routing network element of switching sends the IP address or prefix attaching information.
Optionally, the address administration network element is couple in router and location management server with address management function
Close the network element set.
Corresponding embodiment four, the location management service network element in Figure 12 or 13 include the location management service of several interconnection
Node, the access routing network element or the network element set that closes are connect with some location management service node, the location management
Service node includes node mapping management module, for receiving that network element connected to it sends and the IP address or preceding
After sewing related message or information, is determined according to the algorithm between preset location management service node and be responsible for the IP address or preceding
Sew the location management service node of management and forwards message related with the IP address or prefix or information to it.
Corresponding to embodiment five, it is to switch latter linked access to route network element that in Fig. 3, which currently be the network element of terminal service,
Or location management services network element.
Preferably, the address administration network element in previous embodiment includes the address distribution node of several interconnection, describedly
Location distribution node includes node mapping management module, for receive that network element connected to it sends with the IP address or
After the related message of prefix or information, the IP address or prefix are responsible for according to the algorithm determination between preset address distribution node
The address distribution node of management simultaneously forwards message related with the IP address or prefix or information to it.
The management method and system of IP address or prefix of the present invention, under IP address or the limited situation of prefix resource, i.e.,
Make terminal that mobile handoff occur, the network element release IP address or prefix of responsible IP address or prefix management can also be triggered in time,
It solves the problems, such as that the IP address resource of dynamic allocation is easily consumed totally, improves resource utilization.
Those of ordinary skill in the art will appreciate that all or part of the steps in the above method can be instructed by program
Related hardware is completed, and described program can store in computer readable storage medium, such as read-only memory, disk or CD
Deng.Optionally, one or more integrated circuits can be used also to realize in all or part of the steps of above-described embodiment.Accordingly
Ground, each module in above-described embodiment can take the form of hardware realization, can also be real using the form of software function module
It is existing.The present invention is not limited to the combinations of the hardware and software of any particular form.
Claims (20)
1. the management method of a kind of IP address or prefix, which is characterized in that this method comprises:
When accessing terminal to network, address administration network element is the terminal dynamic IP address allocation or prefix；
After mobile handoff occurs for the terminal, the IP address or prefix are continued to use, and with needing to discharge the IP of the terminal
When location or prefix, currently disappear for the network element of the terminal service to the address administration network element or to functional unit transmission triggering
Breath discharges the IP address or prefix to trigger the address administration network element；
The address administration network element receives the triggering message, discharges the IP address or prefix；
The address administration network element is the first access routing network element with address management function.
2. the method as described in claim 1, which is characterized in that have multiple address administration network elements or function in communication network
Unit, before the current network element for terminal service sends the message to the address administration network element or functional unit, the party
Method further include: the step of current network element for terminal service is preset or obtains IP address or prefix attaching information, the IP
Address or prefix attaching information are used to indicate the address administration network element or function of the IP address for needing to discharge or prefix ownership
Unit；
The current network element for terminal service according to the IP address or prefix attaching information to the address administration network element or
Functional unit sends triggering message.
3. method according to claim 2, it is characterised in that: described be currently the network element of terminal service is location management service
Network element or context record network element；
The method that the location management service network element LMS or context record network element obtain the IP address or prefix attaching information
It is following any:
The first access routing network element is Xiang Suoshu location management service network after IP address described in the terminal distribution or prefix
Member or context record network element send IP address or prefix attaching information；Or,
When the terminal accesses routing network element from source and switches to purpose access routing network element, access routing network element in the source is to described
Purpose access routing network element sends the IP address or prefix attaching information；The purpose access routes network element to the Position Pipe
Reason service network element or context record network element send the IP address or prefix attaching information, and the source access routing network element includes
The first access routing network element；
When needing to discharge the IP address or prefix of the terminal, the access routing network element that terminal currently connects, which sends to carry to trigger, to be referred to
The message or triggering instruction message shown, to indicate the location management service network element or context record network element triggering described first
Access routing network element discharges the IP address or prefix；
To institute after the location management service network element or the context record network element reception triggering instruction or triggering instruction message
It states the first access routing network element and sends the triggering message.
4. method as claimed in claim 3, it is characterised in that: the purpose access routing network element notifies the location management to take
Business network element or context record network element send the IP address or preceding when deleting the IP address or the relevant record information of prefix
Sew attaching information.
5. method according to claim 2, it is characterised in that: it is described currently be terminal service network element be switch it is latter linked
Access routing network element；
It is following any that the latter linked access routing network element of switching, which obtains the IP address or the method for prefix attaching information,
Kind:
After the first access routing network element is IP address or prefix described in the terminal distribution, to location management service network element or
Context record network element sends IP address or prefix attaching information, the location management service network element or context record network element note
Record the IP address or prefix attaching information；Location management service network element or context record network element are to connecting after the switching
The access routing network element connect sends the IP address or prefix attaching information；Or,
When the terminal switches to switching latter linked access routing network element, the access connected before switching routes network element and cuts to described
It changes latter linked access routing network element and sends the IP address or prefix attaching information.
6. method as claimed in claim 5, it is characterised in that: the location management service network element or context record network element connect
It receives latter linked access of the switching and routes the deletion IP address of network element transmission or leading to for the relevant record information of prefix
After knowing, the IP address or prefix attaching information are sent to the latter linked access routing network element of the switching.
7. the method as described in any one of claim 3 to 6, it is characterised in that: if location management service network element includes
The location management service node of dry interconnection, source, purpose or the first access routing network element and some location management service section
Point connection, some described location management service node receive that network element connected to it sends with the IP address or before be embroidered with
After the message or information of pass, the IP address or prefix pipe are responsible for according to the algorithm determination between preset location management service node
The location management service node of reason simultaneously forwards message related with the IP address or prefix or information to it.
8. method according to claim 2, it is characterised in that: it is described currently be terminal service network element be switch it is latter linked
Access routing network element or location management service network element.
9. the method as described in claim 1, it is characterised in that: the address administration network element includes the address point of several interconnection
With node, some address distribution node receives the message related with the IP address or prefix that network element connected to it is sent
Or after information, determine that the address for being responsible for the IP address or prefix management is distributed according to the algorithm between preset address distribution node
Node simultaneously forwards message related with the IP address or prefix or information to it.
10. a kind of IP address or prefix management system, which is characterized in that the system includes:
The address assignment module of address administration network element or functional unit, in accessing terminal to network, being the terminal dynamic
Distribute IP address or prefix；
Address discharges trigger module, is currently the network element of the terminal service after the terminal mobile handoff, for needing
When discharging the IP address or prefix of the terminal, Xiang Suoshu address administration network element or functional unit send triggering message, with touching
It sends out address administration network element described or functional unit discharges the IP address or prefix；
The address release module of the address administration network element or functional unit discharges the IP for receiving the triggering message
Address or prefix；
Wherein, the IP address or prefix continue to use after the terminal mobile handoff.
11. system as claimed in claim 10, which is characterized in that have multiple address administration network elements or function in communication network
Can unit, the network element after terminal mobile handoff currently for the terminal service further includes address attribution information management module, is used for
Preset or acquisition IP address or prefix attaching information, the IP address or prefix attaching information are used to indicate what the needs discharged
The address administration network element or functional unit of IP address or prefix ownership；
Address release trigger module is according to the IP address or prefix attaching information to the address administration network element or function
Unit sends triggering message.
12. system as claimed in claim 11, it is characterised in that: it is described currently be terminal service network element be location management take
Business network element or context record network element, the address administration network element are that the access with address management function routes network element；It is described
System further includes the instruction trigger module that terminal switches latter linked access routing network element, for needing to discharge the terminal
When IP address or prefix, the message for carrying triggering instruction or triggering instruction message are sent, to indicate the location management service network
Member or context record network element triggering the first access routing network element discharge the IP address or prefix；The location management service network
The address of member or context record network element discharges trigger module, the Xiang Suoshu after receiving the triggering instruction or triggering instruction message
First access routing network element sends the triggering message.
13. system as claimed in claim 12, it is characterised in that: the system also includes the addresses of the access routing network element
Attaching information sending module；
After the address assignment module is IP address or prefix described in the terminal distribution, the address of the access routing network element is returned
Belong to information sending module, for servicing network element or context record network element transmission IP address or prefix ownership to the location management
Information；Or,
When switching the preceding access routing network element connected positioned at the terminal, the address attribution information transmission of the access routing network element
Module is used to send the IP address or prefix attaching information to the latter linked access routing network element of the switching；It is cut positioned at described
When changing latter linked access routing network element, the address attribution information sending module of the access routing network element is used for the position
Management service network element or context record network element send the IP address or prefix attaching information.
14. system as claimed in claim 13, it is characterised in that: the address attribution information of the access routing network element sends mould
Block notifies the location management service network element or context record network element to delete the IP address or the relevant record information of prefix
When send the IP address or prefix attaching information.
15. system as claimed in claim 11, it is characterised in that: it is described currently be terminal service network element be switch after connect
Access route network element, the address administration network element is that access with address management function routes network element；
The system also includes it is described access routing network element attaching information sending module and location management service network element or on
Hereafter record the attaching information sending module of network element, wherein the attaching information sending module of the access routing network element, described
After address assignment module is IP address or prefix described in the terminal distribution, for servicing network element or context note to location management
It records network element and sends IP address or prefix attaching information；The attaching information of the location management service network element or context record network element
Sending module, for sending the IP address or prefix attaching information to the latter linked access routing network element of the switching；Or,
The system also includes the attaching information sending modules of access routing network element, for when the terminal is cut out, Xiang Suoshu
Switch latter linked access routing network element and sends the IP address or prefix attaching information.
16. system as claimed in claim 15, it is characterised in that: the location management service network element or context record network element
Attaching information sending module receive it is described switching it is latter linked access routing network element send the deletion IP address or preceding
After the notice for sewing relevant record information, the IP address is sent to the latter linked access routing network element of the switching or prefix is returned
Belong to information.
17. system as claimed in claim 11, it is characterised in that: the address administration network element is with address management function
Couple in router and location management server close the network element set.
18. the system as described in any one of claim 12 to 17, it is characterised in that: it includes several that location management, which services network element,
The location management service node of a interconnection, closes the network element set or access routing network element and some location management service node connects
It connects, the location management service node includes node mapping management module, for receiving what network element connected to it was sent
After message related with the IP address or prefix or information, determined according to the algorithm between preset location management service node
It is responsible for the location management service node of the IP address or prefix management and forwards disappear related with the IP address or prefix to it
Breath or information.
19. system as claimed in claim 11, it is characterised in that: it is described currently be terminal service network element be switch after connect
Access routing network element or location management service network element.
20. system as claimed in claim 10, it is characterised in that: the address administration network element includes the address of several interconnection
Distribution node, the address distribution node include node mapping management module, for receiving network element transmission connected to it
Message related with the IP address or prefix or information after, determined according to the algorithm between preset address distribution node negative
It blames the address distribution node of the IP address or prefix management and forwards message related with the IP address or prefix or letter to it
Breath.
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