CN102612019B - Method and network system for realizing mobile internet protocol (IP) management - Google Patents
Method and network system for realizing mobile internet protocol (IP) management Download PDFInfo
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- CN102612019B CN102612019B CN201110275341.6A CN201110275341A CN102612019B CN 102612019 B CN102612019 B CN 102612019B CN 201110275341 A CN201110275341 A CN 201110275341A CN 102612019 B CN102612019 B CN 102612019B
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Abstract
The invention discloses a method for realizing mobile internet protocol (IP) management, which comprises the following steps that: a mobile node sends a mobile registration signaling to a mobile control (MC) entity in transmission layer control functional entities in a network; the MC entity of the mobile node registers a user, returns registration response to the mobile node and transmits a control signaling to a mobile forwarding (MF) entity in transmission layer bearing functional entities; and after receiving a request signaling of the registered user, the MC entity controls the MF entity to provide communication services for the user. The invention also discloses a network system for realizing mobile IP management.
Description
Technical field
Originally relate to mobile communication technology, relate in particular to a kind of method and network system that realizes mobile IP management.
Background technology
Because internet INTERNET has information storage and the acquisition capability of good communication capability, magnanimity, therefore, basic technology-IP technology of constructing INTERNET just becomes the current technology of network, variously relevant falls over each other to use IP technology with incoherent network, with IP technical compatibility.On this basis, industry has proposed a kind of technology that is called Mobile IP and has solved user's roaming and the problem of maintenance business continuance.Due to the sharply expansion of INTERNET, cause IP address to occur situation in short supply, and very fast IP address will exhaust.For addressing this problem, on the basis of current IP technology (IPv4), develop IPv6; Corresponding mobile IP technology has also developed into MIP6 (Mobile IPv6) from MIP4.The general principle of MIP6 is as shown in Figure 1:
(1) in the time that mobile node is connected on its home network, it will take the mode the same with other stationary nodes to work.
(2) whether mobile node is detected and oneself has been roamed on field network by the neighbor discovery mechanisms of IPv6.The transmission router advertisement message in the nonlocal gateway meeting cycle of IPv6, wherein comprise the prefix of this field network, mobile node is received after the router advertisement message of nonlocal gateway, checks that the prefix of field network is wherein different with the prefix of home network, thinks and roams to field network.
(3) if mobile node find while oneself having moved on field network, it by the basis of the router advertisement information receiving by there being the automatic layoutprocedure in state or stateless address to obtain the Care-of Address on field network.Now mobile node has home address and Care-of Address simultaneously.
(4) mobile node is registered to this Care-of Address of oneself on home agent by " Binding Update " message.
(5) mobile node also can be given this Care-of Address its communication parter by " Binding Update " message registration notification.Before registration, between mobile node and communication parter, need first to carry out Return Routability testing process, be that mobile node first sends Home Init Test message and Care-of Init Test message to communication parter, the latter returns to Home Test message and Care-of Test message to mobile node after processing.
(6) if the communication parter of mobile node is not known its Care-of Address, just by according to the home address of mobile node by Packet Generation to the home network of mobile node, then its home agent will be truncated to these packets, the Care-of Address current according to mobile node again, utilize tunneling mechanism by these package forwards to mobile node.
Mobile node is issued the message of communication parter also can first issue home agent by reverse tunnel, then hands to communication parter by home agent.Because under this mode, the packet between communication parter and mobile node all will carry out transfer by home agent, so also referred to as " triangle route " mode.
(7) if communication parter is known the Care-of Address of mobile node by " Binding Update ", it will utilize the route header of IPv6 directly to send packet to mobile node.The first destination address of packet is Care-of Address, and the second destination address is only home address, so packet can directly be issued the mobile node in field network, and does not need through home agent transfer.
On rightabout, the source data packet address that mobile node is issued communication parter is Care-of Address, and home address be kept at the destination of packet prolate-headed in.Like this, packet also can be issued home agent without reverse tunnel, but directly issues communication parter.This mode, " triangle route " mode of corresponding (6), is called " routing optimality " mode.
In the framework model of existing NGN, there is no to realize the support to mobile management; And current MIP6 technology is mainly aimed at a kind of technology that solves mobility problem of INTERNET network development, do not develop for the widespread demand of similar NGN hierarchical network, therefore have the following disadvantages:
1, control function and do not separate with forwarding capability, all messages are in one plane processed, and are not suitable for the framework of hierarchical network, also do not meet the development trend of future network to hierarchical management model.
2, there is no the ability of the mutual collaborative work of multiple mobile control agent mechanism, be only suitable for localized network mobility IP management expectancy, be not suitable for the mobility IP management of large complicated network.
3, mode of operation that cannot compatible MIPv4.
4, do not make full use of the mobile management ability of communication parter place, opposite end network, and routing optimization manner cannot ensure the address privacy of mobile node.
Summary of the invention
The invention provides a kind of method and network system that realizes mobile IP management, do not separate in the network of controlling function and bearer control function and can not be applied to preferably hierarchy and be not suitable for the problem of carrying out large complicated network to solve in existing mobile IP management.
The invention provides following technical scheme:
Realize a network system for mobile IP management, be applied in the network of hierarchy, comprising: the control functional entity of transport layer and bearing function entity, this bearing function entity is finishing service carrying under the control of described control functional entity; Wherein, the control functional entity of described transport layer comprises mobile controlled entity, and described bearing function entity comprises mobile Delivery Function; Described mobile controlled entity is positioned at control plane, and described handover Delivery Function is positioned at Forwarding plane; Described mobile controlled entity is for the treatment of the signaling of user's transmission with to mobile Delivery Function transmission processing result; Described mobile Delivery Function for completing encapsulation and the forwarding of mobile service association message under the control of mobile controlled entity.
The control functional entity of described transport layer further comprises: mobility authentication vs. authorization entity, and for mobile subscriber being carried out to authentication, certification, charging according to the request of described mobile controlled entity.
Described mobile controlled entity and mobile Delivery Function are separate physical entity.
A mobile controlled entity is connected with multiple mobile Delivery Function, by this plurality of mobile Delivery Function of mobile controlled entity control.
Described mobile controlled entity is multiple and interconnects; Or described mobile controlled entity is multiple, and connect by cascade system.
Described mobile controlled entity and mobile Delivery Function are arranged in Same Physical entity.
Realize a method for mobile IP management, be applied in the network of hierarchy, comprise the steps:
Mobile node sends mobile register command to mobile (MC) entity of controlling in network transmission layer control functional entity, and described mobile controlled entity is positioned at control plane;
The mobile controlled entity of described moving nodes local is registered user, and return to registration response and to mobile (MF) entity transfer control signaling that forwards in transport layer bearing function entity, described handover Delivery Function is positioned at Forwarding plane to mobile node;
Described mobile controlled entity is receiving after registered user's demand signalling, controls described mobile Delivery Function and provides communication service for this user.
Wherein:
Described local is moved controlled entity and after register command, is further moved authentication vs. authorization entity to local and send checking request receiving, and user is verified and returned to the result to mobile controlled entity by mobile authentication vs. authorization entity.
Described mobile node is in the time of home network or field network, and the register command of transmission is directly sent to the mobile controlled entity in local; Or described mobile node is in the time of field network, the register command of transmission is sent to described local by the mobile controlled entity in other places at place and moves controlled entity.
When mobile node is registered at field network, automatically obtain the mobile Delivery Function in other places nearby, and according to by this address of moving Delivery Function and further obtain nonlocal mobile controlled entity.
Described mobile node, in the time switching registration, takes a step forward to Network Capture Care-of Address in the mobile register command of transmission, and is carried in mobile register command.
In handoff procedure, described mobile controlled entity further obtains this user's service quality relevant information and for Service control.
Mobile node completes after switching, further sends routing optimality request to Correspondent Node, and between mobile node correspondent node, sets up the communication channel of optimizing after receiving routing optimality and replying.
After mobile node switches, move controlled entity to local and send routing optimality request, and the routing optimality request sending to the mobile controlled entity at correspondent node place after request is passed through; After mobile node receives routing optimality and replys, set up the communication channel of optimizing, and E-Packeted by the mobile Delivery Function at correspondent node place.
The mobile Delivery Function at described correspondent node place is receiving after the message of mobile node transmission, processes the Care-of Address of mobile node in this message, to protect the privacy of positions of mobile nodes.
Beneficial effect of the present invention is as follows:
The present invention is according to existing mobile IP technology, and the development trend in conjunction with future network to hierarchical management model, has creatively proposed how to realize mobile IP management model at hierarchical network, has provided total framework structure.This scheme is compatible existing mobile IP technology not only, simultaneously perfect on this basis overall implementation, and meet various mobile management demands, creatively integrate the functions such as multiple routing optimality scheme, address privacy, authorization identifying.
Brief description of the drawings
Fig. 1 is the schematic diagram of realizing MIP6 in prior art;
Fig. 2 is mobile IP management hierarchy schematic diagram in the present invention;
Fig. 3 is the structural representation of mobile controlled entity cascade in the present invention;
Fig. 4 is the mobile IP management hierarchy schematic diagram in the present invention with mobile aaa functionality;
Fig. 5, Fig. 6 are the flow chart of mobile node registration in the present invention;
Fig. 7 is the flow chart that in the present invention, mobile node carries out routing optimality.
Embodiment
In order to realize better the terminal mobility management in complicated layer control network, the present invention is on the basis of original mobile IP technology, mobile management functional entity is separated into mobile (MC) entity and mobile (MF) entity that forwards controlled, so as by mobile IP management can be applied in preferably with the similar layer control network of NGN in.
Consult shown in Fig. 2, in transmission network, be mainly divided into two planes, be respectively control plane and Forwarding plane, control plane mainly completes the control to Forwarding plane, realizes the functions such as terminal use's access authentication, user management, resource control, quality of service (QoS); Forwarding plane is mainly realized message and is processed and forwarding capability under the effect of control plane.And in mobile IP management, mobile controlled entity (Mobility Control) and mobile forwarding capability entity (Mobility Forwarding) lay respectively at control plane and Forwarding plane.
Mobile controlled entity (MC) is the hard core control entity in Mobile IP mechanism, mainly has following functions:
(1) controlling MF realizes the relevant treatment of mobile IP message and the forwarding that holds water.
(2), in the time that mobile node (MN) occurrence positions moves, MC is responsible for the registration request to MN.
(3) MC is responsible for the positional information of maintenance and management MN.
(4) MC is responsible for the Care-of Address (care-of IP address) of maintenance and management MN and the mapping relations with home address thereof.
(5) MC provides the safety assurance in mobile management.
MC can control one or more local MF simultaneously, is responsible for the mobile management of local network.MC selects corresponding MF to carry out mobile management control according to the registration request of MN.Between the MC of zones of different, can intercom mutually and interactive information, realize the cross-domain management of mobile node.In Fig. 2, mobile controlled entity MC1, MC2 and MC3 belong to respectively heterogeneous networks territory, and each mobile controlled entity is managed respectively and controlled three MF (being not limited to three MF).
MN at field network can directly register by local MC, also can indirectly then register to local MC by nonlocal MC.
Mobile forwarding capability entity (MF), under the control of MC, is realized relevant treatment and the forwarding capability of mobile IP message.MF can complete by tunneling technique and route-optimization technique processing and the forwarding of mobile IP message, and (Quality of Service, the QoS) guarantee to mobile IP message is provided.
Mobile node (MN) sends, receives message and all forwarded and processed by MF nearby; Or MN carries out message processing and forwarding by local MF; Or MN carries out message processing and forwarding by the MF of CN place network.Transmission, the reception message of correspondent node (CN) are all forwarded and are processed by MF nearby.
If CN place network exists MC and MF, MF can carry out route optimisation process to mobile IP message under the control of affiliated MC.Meanwhile, in order to ensure the privacy of MN address, MF can carry out conversion process to mobile IP message head.
Whether in actual applications, MC and MF can be arranged in same physical entity, and both have identical IP address, be also business datum of signaling, and send MC and MF to by the packet header identification of packet.MC and MF can be also separate physical entities, and both have different IP addresses.
For simple network, the MC of zones of different can merge, and carries out unified management.For complex network, multiple MC can implementation levelization management, realize the mobile control and management in some scopes by two-layer or multilayer MC plane.As shown in Figure 3, MC1, MC2, the MC3 in the territory of different management are cascaded to a MC0, by MC0, MC1, MC2, MC3 are carried out to centralized control.In this structure, the signaling that mobile node sends is first routed to mobile controlled entity MC0, and control point is moved in the local that is forwarded to mobile node by it.
In order further to improve fail safe, further increase authentication, certification, charging (Mobility Authentication, Authorization, and Accounting, MAAA) entity at control plane.Consult shown in Fig. 4, MAAA entity is connected with MC, for supporting the function such as checking and charging of mobile IP management.MC, after the request registration request that receives mobile node, asks MAAA entity to be verified mobile subscriber, and the backward MC of MAAA object authentication returns results.
After controlling function separate with forwarding capability in mobile IP management, when mobile node (MN) occurrence positions moves, can Automatic-searching MF and MC nearby, and by the mobile registration of this MC application, now; MN also can directly find local MC and move registration.
Same with existing mode, can be automatically in the time that MN occurrence positions moves obtain Care-of Address at field network, and MN can and correspondent node (CN) between mobile signaling protocol mutual, to complete routing optimality function.For CN, if there is MC and MF in place network, Automatic-searching MF and MC nearby.
In network, the mobile management of mobile node is mainly comprised and moves registration, mobile switching and the rear routing optimality of switching.
Mobile subscriber, need to be to the mobile controlled entity registration in local in the time of the NGN network of local.When mobile subscriber moves to after field network, if need to use Information Mobile Service, also need to the identity of the mobile controlled entity registration oneself in its local.
When mobile node is registered at field network, in register command, comprise the new Care-of Address that mobile subscriber's oneself identity ID, the password that uses Information Mobile Service and mobile subscriber obtain at visited network.In addition, register command can be sent to register command by nonlocal MC the MC in local.In this case, first mobile node searches the mobile Delivery Function in other places at place, then moves Delivery Function and obtain the address of the nonlocal controlled entity at place according to this.
Having in the network of mobility authentication vs. authorization entity, the local of mobile node is moved controlled entity and further the user ID in register command and password is sent to local mobility authentication vs. authorization entity; Mobility checking authorized entity returns to local by result and moves controlled entity.
Consult shown in Fig. 5, mobile node is in the time of field network, and the registration process that user is not verified is as follows:
Step 400, mobile node send mobile register command (register command).
Step 410, local are moved controlled entity mobile subscriber are registered, and return to registration response to mobile subscriber.
Step 420, mobile controlled entity, to mobile Delivery Function transfer control signaling, are realized processing and the forwarding of mobile message to control mobile Delivery Function.
Consult shown in Fig. 6, mobile node is in the time of field network, and the registration process that user is verified is as follows:
The mobile Delivery Function in step 600, mobile node automatic acquisition other places, and send mobile register command to it know the address of the mobile controlled entity in other places, place by the mobile Delivery Function in this other places after.
Step 610, nonlocal mobile controlled entity move controlled entity to the local of node and forward described register command, the home address that has comprised mobile node in this message and the Care-of Address obtaining from visited network.
Move after the register command that controlled entity receives user in step 620, local, sends inquiry signaling to mobility authentication vs. authorization entity.
Step 630, mobility authentication vs. authorization entity are verified user according to user data, and are moved controlled entity to local and return to the inquiry response signaling that comprises the result.
Step 640, local move controlled entity outwards mobile controlled entity return to registration response signaling.
Step 650, nonlocal mobile controlled entity return to registration response signaling to mobile node.
Step 660, nonlocal mobile controlled entity outwards mobile Delivery Function send control signaling, and realize processing and the forwarding of mobile message to control corresponding nonlocal Delivery Function.
After the registration of step 670, described mobile node, local is moved controlled entity and is moved Delivery Function to local and send control signaling, and realizes processing and the forwarding of mobile message to control corresponding nonlocal Delivery Function.
If do not need mobile node to verify, in above-mentioned flow process, do not comprise the checking processing of step 620 and step 630, directly to move controlled entity by local mobile node is registered, all the other processing are identical.
After MN registration, between this MN and CN, set up the communication port of a Forwarding plane.This passage has two kinds of communication paths, a kind ofly carries out message transfer for the message between MN and CN moves Delivery Function by local, and this route is similar to the communication mechanism of MIP6; A kind of is that message moves Delivery Function by local and message transfer is carried out in nonlocal mobile Delivery Function local, and this route is similar to the communication mechanism of MIP4.Concrete which kind of communication path of selecting is looked network condition and determines,
When the network boundary of mobile node in home network and field network, or when network boundary between field network, mobile node by outwards network application to obtain the passage of target couple in router, i.e. Care-of Address.Afterwards, mobile subscriber carries out mobile register flow path, and sets up communication port with correspondent node after successfully registering, and communicates by this communication port.
At handoff procedure, other controlled entities in mobile controlled entity or network can further be inquired about this mobile subscriber's user data, corresponding bandwidth information, quality of service information etc. are handed down to mobile Delivery Function, to carry out Service control.
In Fig. 6, when after switching, mobile node carries out the routing optimality place of point-to-point, in step 690, send optimization request by mobile node to the correspondent node of opposite end, this request message comprises the mapping relations between address, moving nodes local and up-to-date Care-of Address, and the source address of this request message is up-to-date Care-of Address; In step 695, correspondent node is returned to optimize to mobile node and is replied, and then uses up-to-date Care-of Address and the MN of MN to communicate.
Consult shown in Fig. 7, mobile node and correspondent node also can be carried out routing optimality by following flow process:
Step 700, mobile node move the routing optimality demand signalling that controlled entity sends to local.
Mobile node can directly move controlled entity and send routing optimality demand signalling to local, also can indirectly move controlled entity request to local by the mobile controlled entity in other places.
Routing optimality demand signalling is sent to the mobile controlled entity in correspondent node territory after moving controlled entity the routing optimality request of mobile node being passed through in step 710, local.
Step 720, CN territory are moved controlled entity and are received after routing optimality demand signalling, move controlled entity return to routing optimality response signaling to local.
Step 730, local are moved controlled entity final routing optimality response results are passed to mobile node.
In the route of returning and step 700, send the route contrary of routing optimality demand signalling.
Controlled entity is moved by after routing optimality response signaling in step 740, CN territory, sends the mobile control signal that forwards to the mobile Delivery Function adjacent with CN, controls mobile Delivery Function and realize processing and the forwarding of mobile message.
So far, between MN and CN, set up a routing optimality communication port.Mobile message all moves Delivery Function by CN territory and carries out message repeating, and the message from CN to MN is walked shortest path and directly issued MN after this moves Delivery Function intercepting and capturing, thereby has avoided " triangle route " problem of Mobile IP mechanism.
In order to protect the address privacy of MN; message from MN to CN, after the mobile Delivery Function in CN territory is intercepted and captured, is replaced the home address of mobile node the source IP address (being the Care-of Address of MN) in message and carries out being transmitted to corresponding mobile node after message encapsulation process.
From the above, the present invention has following characteristics:
(1) the present invention separates mobile management control plane and mobile management forwarding plane, and therefore this mobility management mode is applicable to layer control network structural model.
(2) can provide the universal mobility in layer control network for mobile object.
(3) can compatible existing mobile IP v 6 and mobile IPv 4 mechanism.
(4) support mobile subscriber's characteristic management, traffic performance that can calling party from (home network and the visited network) Anywhere of network; To facilitate checking, mandate, business to provide and the function such as charging.
(5) business continuance when support user network mobility, and support user moves.
(7) handover security be can ensure, unauthorized access and protection privacy of user prevented.
(8) support VPN terminal use's mobility.
(9) can be for user provides address management function, support user's the function such as mobile registration, position renewal, address transition.
(10) support the characteristic management of mobile device, can obtain address, equipment from current location, the equipment of equipment Anywhere under the Radio Resource condition etc. of user, equipment.
(11) position that can prevent mobile subscriber is obtained by third party.
(12) merge kinds of schemes and solve " triangle route " problem in Mobile IP, multiple routing optimization manner is provided.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if to these amendments of the present invention with within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (12)
1. realize a network system for mobile IP management, be applied in the network of hierarchy, comprising: the control functional entity of transport layer and bearing function entity, this bearing function entity is finishing service carrying under the control of described control functional entity; It is characterized in that, the control functional entity of described transport layer comprises mobile controlled entity, and described bearing function entity comprises mobile Delivery Function; Described mobile controlled entity is positioned at control plane, and described mobile Delivery Function is positioned at Forwarding plane;
Described mobile controlled entity is for the treatment of the signaling of user's transmission with to mobile Delivery Function transmission processing result;
Described mobile Delivery Function for completing encapsulation and the forwarding of mobile service association message under the control of mobile controlled entity;
Mobile node is in the time of home network or field network, and the register command that controlled entity sends for receiving described mobile node is moved in local; Or described mobile node is in the time of field network, described local is moved controlled entity and is received for the mobile controlled entity in other places by described mobile node place the register command that described mobile node sends;
After mobile node switches, the routing optimality request that controlled entity sends for receiving described mobile node is moved in described local;
The mobile controlled entity at correspondent node place is for moving by the described local of rear reception the routing optimality request that controlled entity sends in request, and move controlled entity to described local and return to routing optimality response signaling, between described correspondent node and described mobile node, set up the communication channel of optimizing, final routing optimality response results is moved controlled entity by described local and passes to described mobile node;
The mobile Delivery Function at correspondent node place is used for E-Packeting.
2. network system as claimed in claim 1, is characterized in that, the control functional entity of described transport layer further comprises:
Mobility authentication vs. authorization entity, for carrying out authentication, certification, charging according to the request of described mobile controlled entity to mobile subscriber.
3. network system as claimed in claim 1, is characterized in that, described mobile controlled entity and mobile Delivery Function are separate physical entity.
4. network system as claimed in claim 3, is characterized in that, a mobile controlled entity is connected with multiple mobile Delivery Function, by this plurality of mobile Delivery Function of mobile controlled entity control.
5. the network system as described in as arbitrary in claim 1 to 4, is characterized in that, described mobile controlled entity is multiple, and interconnects; Or described mobile controlled entity is multiple, and connect by cascade system.
6. network system as claimed in claim 1, is characterized in that, described mobile controlled entity and mobile Delivery Function are arranged in Same Physical entity.
7. realize a method for mobile IP management, be applied in the network of hierarchy, it is characterized in that, comprise the steps:
Mobile controlled entity in network transmission layer control functional entity receives the mobile register command that mobile node sends, and described mobile controlled entity is positioned at control plane;
Local is moved controlled entity user is registered, and returns to registration response and to the mobile Delivery Function transfer control signaling in transport layer bearing function entity, described mobile Delivery Function is positioned at Forwarding plane to mobile node;
Described mobile controlled entity is receiving after registered user's demand signalling, controls described mobile Delivery Function and provides communication service for this user;
Described mobile node is in the time of home network or field network, and described register command is directly sent to local and moves controlled entity; Or described mobile node is in the time of field network, described register command is sent to described local by the mobile controlled entity in other places at described mobile node place and moves controlled entity;
After mobile node switches, local is moved controlled entity and is received the routing optimality request that mobile node sends, and the mobile controlled entity to correspondent node place sends routing optimality request after request is passed through; The mobile controlled entity at correspondent node place moves controlled entity to described local and returns to routing optimality response signaling, between described correspondent node and described mobile node, set up the communication channel of optimizing, and the mobile Delivery Function by correspondent node place E-Packets, final routing optimality response results is moved controlled entity by described local and passes to described mobile node.
8. method as claimed in claim 7, it is characterized in that, described local is moved controlled entity and after register command, is further moved authentication vs. authorization entity to local and send checking request receiving, and user is verified and returned to the result to mobile controlled entity by mobile authentication vs. authorization entity.
9. method as claimed in claim 7, is characterized in that, when mobile node is registered at field network, automatically obtains the mobile Delivery Function in other places nearby, and by this address of moving Delivery Function and further obtain nonlocal mobile controlled entity.
10. method as claimed in claim 9, is characterized in that, described mobile node, in the time switching registration, takes a step forward to Network Capture Care-of Address in the mobile register command of transmission, and is carried in mobile register command.
11. methods as claimed in claim 10, is characterized in that, in handoff procedure, described mobile controlled entity further obtains this user's service quality relevant information and for Service control.
12. methods as claimed in claim 7, is characterized in that, the mobile Delivery Function at described correspondent node place is receiving after the message of mobile node transmission, processes the Care-of Address of mobile node in this message, to protect the privacy of positions of mobile nodes.
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| CN201110275341.6A CN102612019B (en) | 2005-12-31 | 2006-02-23 | Method and network system for realizing mobile internet protocol (IP) management |
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| CN200510003427 | 2005-12-31 | ||
| CN200510003427.8 | 2005-12-31 | ||
| CN201110275341.6A CN102612019B (en) | 2005-12-31 | 2006-02-23 | Method and network system for realizing mobile internet protocol (IP) management |
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| CN2006100577014A Division CN1992727B (en) | 2005-12-28 | 2006-02-23 | Method for implementing mobile IP management and network system |
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