CN101198157A - Method for modifying local proxy of mobile node - Google Patents
Method for modifying local proxy of mobile node Download PDFInfo
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- CN101198157A CN101198157A CNA2006101634584A CN200610163458A CN101198157A CN 101198157 A CN101198157 A CN 101198157A CN A2006101634584 A CNA2006101634584 A CN A2006101634584A CN 200610163458 A CN200610163458 A CN 200610163458A CN 101198157 A CN101198157 A CN 101198157A
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Abstract
The invention provides a method of changing mobile node home agent and comprises that: a mobile node supporting dynamic allocation of home agent of a visited place obtains that the current network and the network of the current registered and bound home agent are not the same; the mobile node requests the network of the visited place to reallocate the home agent; the network of the visited place allocates the home agent for the mobile node. Through the invention, when the mobile node supporting the dynamic allocation of home agent of the visited place obtains that the current network and the network of the current registered and bound home agent are not the same; the mobile node requests to reallocate the home agent in order that the mobile node can always use the home agent allocated by the local network to perform data communication, thereby avoiding alternate routes and reducing service time delay.
Description
Technical field
The present invention relates to the mobile IP technology in the computer network, relate in particular to a kind of method of modifying local proxy of mobile node.
Background technology
Mobile IP (Mobile IP) technology makes mobile node (portable machine/mobile phone etc.) with fixing home network IP address, realizes crossing over the roaming function of heterogeneous networks, and guaranteed that any change does not take place the network legal power of IP Network Based in roam procedure.
The cardinal principle of mobile IP technology is: when mobile node roams into field network, obtain the Care-of Address CoA (Care-of Address) that a field network distributes, to home agent HA (Home Agent) registration, the home address HoA (Home Address) that home network is distributed binds with Care-of Address by mobile node;
Wherein, described home agent, be meant the router that operates on this moving nodes local network, home agent is responsible for preserving the mobile node current position information, and accurately is forwarded to the mobile node that is in roaming position according to the data that this information will be issued this mobile node.
Mobile IP technology is applied in 3G (Third Generation) Moblie at present.
Better when roaming, support the application of real time business in order to make mobile node, make data need not always send to terminal use's home network, 3GPP2 (Third Generation Partnership Project2) is developing new standard the mobile IP capability of stipulating among the X.S0011-D is being strengthened, the standard of developing comprises to the enhancing of mobile IPv 4 with to the enhancing of mobile IP v 6, this enhancing mainly provides the ability of distributing HA on visit ground, strengthen standard by mobile IP, mobile node is after the network authorization of local, mobile node can ask to distribute HA on visit ground, and is assigned with HA at access zone network.
But current mobile IP strengthens standard still exists some problems, specific as follows:
As shown in Figure 1, when mobile node roams into visit ground 1, insert by the PDSN (1) in the visit ground, and 1 a home agent HA (1) and a home address have dynamically been distributed on visit ground, in HA (1), home agent is bound described home address and Care-of Address, makes this mobile node data that send later on and the data that other node is issued this mobile node all will pass through HA (1) forwarding;
When mobile node again from visit ground 1 when having roamed into visit ground 2, this mobile node is by PDSN (2) access network in the visit ground 2, though in visit ground 2, home agent HA (2) is arranged also, but all data communication in visit ground 2 of this mobile node still will be carried out data forwarding by the home agent HA (1) of dynamic assignment in the visit ground 1.Even if this mobile node has been got back to home network, because HA (1) does not change, all data communication still will be carried out data forwarding by the home agent HA (1) of dynamic assignment in the visit ground 1;
Like this, just bring route circuitous, caused unnecessary time delay, caused the waste of handling resource.
Summary of the invention
For this reason, technical problem to be solved by this invention is: a kind of method of modifying local proxy of mobile node is provided, to overcome the deficiencies in the prior art, avoids unnecessary route to make a circulation, reduce time delay.
So, the invention provides a kind of method of modifying local proxy of mobile node, comprising:
Support the mobile node of visit ground dynamic assignment home agent to know that the network at its current place and the home agent place network of current registration binding are not consolidated networks;
This mobile node is redistributed home agent to the access zone network request;
Access zone network distributes home agent for this mobile node.
Wherein, the request mode of home agent is redistributed in described mobile node request, comprising:
Mobile node is asked immediately, mobile node is initiated request at initiation request behind the current active conversation end, mobile node at initiation request or mobile node behind the important application conversation end next time when re-registering.
Wherein, described mobile node knows that the home agent place network of the network at its current place and current registration binding is not that the method for consolidated network is:
Judge that by mobile node described network is not consolidated network or judges that by network side entity described network is not a consolidated network, and the notice mobile node, described network side entity is IAD or home agent.
Mobile node judges that described network is not that the method for consolidated network is:
Mobile node compares network identity and the current place network identity of preserving, if it is inequality, think that then the network that inserts changes, described network is not a consolidated network, and described network identity comprises system identification, NID, Mobile Country Code MCC or Mobile Network Code.
Perhaps, mobile node judges that described network is not that the method for consolidated network is:
Mobile node is used by aerial transmission configuration and is obtained the current place of this mobile node network information;
Mobile node compares the network information and the current place network information of preserving, if inequality, thinks that then the network that inserts changes, and described network is not a consolidated network.
Perhaps, mobile node judges that described network is not that the method for consolidated network is:
In Mobile Internet Protocol edition 4 network, when mobile node inserts new IAD, receive the agent advertisement that this new IAD sends;
Mobile node compares the foreign agent care-of address in the agent advertisement of the foreign agent care-of address preserved and current reception, if do not have identically, thinks that then the network of access changes, and described network is not a consolidated network.
Perhaps, mobile node judges that described network is not that the method for consolidated network is:
In Mobile Internet Protocol version 6 networks, when mobile node inserts new gateway, receive the router advertisement that this access new gateway sends;
If the Care-of Address that mobile node is preserved does not belong to the address prefix scope in the router advertisement of current reception, think that then the network that inserts changes, described network is not a consolidated network.
Wherein, the described network of network side entity notice mobile node is not that the mode of consolidated network is:
Notify immediately, wait until that mobile node does not have to notify or notice when mobile node re-registers next time after the active session.
The described network of network side entity notice mobile node is not that the method for consolidated network is:
Network side entity is notified, is notified, notifies mobile node or pass through the new the Internet Internet Control Message Protocol message informing mobile node of definition by agent advertisement by the expansion of ppp protocol manufacturer by the transmission of aerial transmission configuration mode.
Perhaps, the described network of network side entity notice mobile node is not that the method for consolidated network is:
In Mobile Internet Protocol edition 4 network, network side entity is recalled the message informing mobile node by registration reply message or registration.
Perhaps, the described network of network side entity notice mobile node is not that the method for consolidated network is:
In Mobile Internet Protocol version 6 networks, IAD notifies mobile node, home agent to pass through the new the Internet Internet Control Message Protocol message informing mobile node of definition by binding response message notice mobile node or home agent by router advertisement.
Wherein, home agent judges that described network is not that the method for consolidated network is:
In Mobile Internet Protocol edition 4 network or version 6 networks, when mobile node re-registers, home agent judges whether the Care-of Address in the mobile node registration message belongs to the address realm of home agent place network, if do not belong to, think that then the network that inserts changes, described network is not a consolidated network.
Wherein, gateway judges that described network is not that the method for consolidated network is:
In Mobile Internet Protocol edition 4 network or version 6, when mobile node re-registers, IAD authenticates to authentication, mandate, record keeping aaa server, and aaa server returns to IAD with the home agent place network information of this mobile node use last time;
IAD compares home agent place internet message and the IAD place network that aaa server returns, if inequality, thinks that then the network that inserts changes, and described network is not a consolidated network.
Wherein, in Mobile Internet Protocol edition 4 network, access zone network is the method that mobile node distributes home agent, comprising:
Mobile node sends register requirement, and the expression request is at access zone network dynamic assignment home agent;
IAD authenticates this mobile node to aaa server;
IAD is that mobile node distributes visit ground home agent, and transmits register requirement and give visit ground home agent, and visit ground home agent is that mobile node distributes home address.
Wherein, in Mobile Internet Protocol version 6 networks, access zone network is the method that this mobile node distributes home agent, comprising:
Mobile node sends DHCP, and request distributes visit ground home agent;
IAD is that mobile node distributes visit ground home agent.
The present invention, the home agent place network that the network of knowing its current place when the mobile node of supporting visit ground dynamic assignment home agent and current registration are bound is not in the consolidated network time, just home agent is redistributed in request, the home agent that makes mobile node can use local networks to distribute all the time carries out data communication, avoid route circuitous, reduced service delay.
Description of drawings
Fig. 1 is in the prior art, and mobile node and home agent carry out the information interaction schematic diagram;
Fig. 2 is the flow chart of modifying local proxy of mobile node method of the present invention;
Fig. 3 is in the mobile IPv 4 network, and the home agent flow chart is redistributed in the mobile node request;
Fig. 4 is in the mobile IP v 6 network, and the home agent flow chart is redistributed in the mobile node request.
Embodiment
Core concept of the present invention is, a kind of mechanism of modifying local proxy of mobile node is provided, and promptly follows moving of mobile node, distributes local home agent on different visit ground for this mobile node, and is circuitous to reduce route, the minimizing time delay.
Below, describe the present invention in conjunction with the accompanying drawings.
As shown in Figure 2, the invention provides a kind of method of modifying local proxy of mobile node, comprising:
A1: support the mobile node of visit ground dynamic assignment home agent to know that the network at its current place and the home agent place network of current registration binding are not consolidated networks;
A2: this mobile node is redistributed home agent to the access zone network request;
A3: access zone network distributes home agent for this mobile node.
Wherein, at step a1, mobile node knows that the home agent place network of mobile node self current place network and current registration binding is not that the method for consolidated network has two kinds:
First kind is, mobile node self judges that described network is not a consolidated network;
Second kind is, is not consolidated network by gateway or the described network of home agent notice mobile node, and judge that by gateway or home agent described network is not a consolidated network this moment.
Respectively to these two kinds of methods of knowing, be described in detail below:
First kind, judge that by mobile node the home agent place network of the network at its current place and current registration binding is not that the method for consolidated network has:
1, mobile node compares network identity and the current place network identity of preserving, if it is inequality, think that then change has taken place IAD, described network is not a consolidated network, and described network identity comprises system identification, NID, Mobile Country Code MCC or Mobile Network Code;
When mobile node is linked in the network by PDSN, obtain the network identity of current access network, in code division multiple access CDMA (Code Division Multiple Access) HRPD (high rate packet data) technology HRPD (HighRate Packet Data), if system identification SID or NID NID are different with access network sign last time that this mobile node is preserved, think that then this mobile node is linked in the different networks, described network may not be a consolidated network;
In Wideband Code Division Multiple Access (WCDMA) WCDMA (Wideband Code Division Multiple Access), if Mobile Country Code MCC MCC or Mobile Network Code MNC are different with access network sign last time that this mobile node is preserved, think that then this mobile node is linked in the different networks, described network may not be a consolidated network;
2, mobile node is used by aerial transmission configuration OTA (Over The Air) and is obtained the current place of this mobile node network information;
The network information and the current place network information that mobile node inserted the last time of preserving compare, if inequality, think that then change has taken place IAD, and described network is not a consolidated network;
Wherein, the described network information can be system identification SID, NID NID, network domains etc.;
3, in mobile IPv 4 (internet protocol version 4) network, when mobile node inserts new gateway, new gateway can send agent advertisement (Agent Advertisement) and give mobile node, comprises the foreign agent care-of address (FA CoA:Foreign AgentCare-of Address) of one or more new IAD in this agent advertisement;
Any one foreign agent care-of address in the original foreign agent care-of address that mobile node will be preserved and the agent advertisement of current reception compares, if it is inequality, then mobile node is known and has been changed IAD, and mobile node thinks that the network at its current place and the home agent place network of current registration binding are not consolidated networks;
4, in mobile IP v 6 (internet protocol version 6) network, when mobile node inserted new gateway, the new gateway that inserts can send router advertisement (Router Advertisement), comprises one or more prefix information option in this router advertisement;
If the foreign agent care-of address that mobile node is preserved does not belong to any one the address prefix scope in the router advertisement of current reception, mobile node thinks that the home agent place network that network and the current registration at its current place are bound may not be a consolidated network.
Second kind is, judges and notify the described network of mobile node be not consolidated network by gateway or home agent, and the situation of notice mobile node is divided into two kinds:
1, gateway is judged, is notified:
1) determination methods comprises three kinds:
First kind, strengthen in the network at mobile IPv 4, when mobile node re-registered, IAD authenticated to authentication, mandate, record keeping aaa server, and aaa server returns to IAD with the home agent place network information of this mobile node use last time;
The IAD body compares home agent place internet message and the IAD place network that aaa server returns, if inequality, then mobile node thinks that the network at its current place and the home agent place network of current registration binding are not consolidated networks;
Second kind, IAD is known all HA information of present networks, if the HA of mobile node request not in present networks HA scope, then the HA that uses of mobile node and the network of current access are not consolidated networks.
The third, IAD judges whether to belong to the present networks address realm according to the address of the HA in the registration message, if do not belong to, then the HA of mobile node use and the network of current access are not consolidated networks.
More than second kind and the third determination methods be applicable to that simultaneously mobile IPv 4 strengthens network and mobile IP v 6 strengthens network.
2) advice method and method:
Advice method is:
Notify immediately, wait until that mobile node does not have to notify or notify after the active session in the response message of replying the mobile node register requirement.
Notification Method is:
Network side entity is notified, is notified, notifies mobile node or pass through the new the Internet Internet Control Message Protocol message informing mobile node of definition by agent advertisement by the expansion of ppp protocol manufacturer by the transmission of aerial transmission configuration mode;
Perhaps, in the mobile IPv 4 network, when mobile node inserted new gateway, gateway was recalled (RegistrationRevocation) message informing mobile node by mobile node registration reply RRP (Registration Reply) message or registration;
Perhaps, in the mobile IP v 6 network, IAD is notified mobile node by router advertisement.
2, home agent is judged, is notified:
1) determination methods is:
Strengthen in network or the mobile IP v 6 enhancing network at mobile IPv 4, when mobile node re-registers, home agent judges whether the Care-of Address in the mobile node registration message belongs to the address realm of home agent place network, if inequality, then home agent thinks that the network at the current place of mobile node and the home agent place network of current registration binding are not consolidated networks.
2) Tong Zhi mode and method are:
The mode of notice is identical with the advice method of IAD, no longer is repeated in this description at this.
The method of notice is:
Just strengthen in the network at mobile IP v 6, home agent notifies mobile node or home agent by the new the Internet Internet Control Message Protocol message informing of definition by the binding response message;
In mobile IPv 4 strengthens, home agent is recalled (Registration Revocation) message informing IAD by registration reply RRP (Registration Reply) message or registration, and IAD is again by top gateway advice method notice mobile node.
About above-mentioned Notification Method, some is to use message format expanded and realizes, and is specific as follows:
1, by ppp protocol manufacturer expansion notice:
Its concrete message format is:
Wherein, Code: code, to put 0 o'clock, expression is manufacturer's expansion;
Identifier: identifier is used for mating the bag that sends and receive;
Length: length, 12 bytes;
Magic Number: Magic number is used for detecting link;
OUI: organize unique identification, represent 3GPP2 with 0xCF0002 here;
Kind: kind, for example, can represent to ask again home agent notice with 4, represent to ask home agent to be replied again with 5;
For example, when the home agent place network of the present place of IAD judgment processing mobile node network registration binding current with it is not consolidated network, IAD sends to mobile node by ppp protocol manufacturer extended message and asks the home agent notice again, kind Kind expands to 4 in this message, asks the home agent notice again with 4 representatives;
After mobile node is received this message, this message is replied, kind Kind expands to 5 in this response message, represents to ask home agent to be replied again with 5;
Mobile node is redistributed home agent to network requests in due course.
2, by the new the Internet Internet Control Message Protocol message informing mobile node of definition:
For example define new icmp message type value 155, expression need be asked home agent again.
Message format is as follows:
0 1 2 3
0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Identifier |A| Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Options... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Type I CMP, type of message uses new types value 155 here;
Code: code, put 0;
Checksum ICMP verification and Identifier are used for distinguishing the identifier of different home agent assignment messages;
The A position, response bits.If service HA puts 1, the mobile IP v 6 client must send response message;
Reserved keeps the position, puts 0 now, is used for expansion in the future; Can have option, whether expression asks to distribute HA immediately again.
3, by agent advertisement notice mobile node:
Use in the marker bit that keeps in Agent Advertisement AA (Agent Advertisement), for example the home agent notice is represented to ask again in the N position.
4, in the mobile IPv 4 network, when mobile node inserted new gateway, gateway was registered by mobile node
Reply RRP (Registration Reply) message or registration and recall (RegistrationRevocation) message informing mobile node:
In concrete the enforcement, recall in the message in described registration reply message or registration, can adopt the FA Error Extension (expansion of Foreign Agent mistake) in the RFC4636 agreement to carry described notice, this Foreign Agent mistake extended format is:
0 1 2 3
0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Length | Sub-Type | Status |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Wherein, Type: type, 45, represent that this is the expansion of Foreign Agent mistake;
Length: length, 2 bytes;
Sub-Type: subtype;
Status: error code;
Define the notice that new status represents to ask again home agent, perhaps define the notice that new Sub-type represents to ask again home agent, perhaps define the notice that new Type represents to ask again home agent.
5, in the mobile IP v 6 network, IAD is notified mobile node by router advertisement:
Concrete message format is:
0 1 2 3
0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|?Cur?Hop?Limit?|M|O|H|?Reserved| Router?Lifetime |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Reachable?Time |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Retrans?Timer |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Options...
+-+-+-+-+-+-+-+-+-+-+-+-
Wherein, in message, define new marker bit or define new option, again ask the home agent notice with expression, for example represent to ask again the home agent notice, perhaps define the new HA of request again option and represent to ask again the home agent notice at a reservation position defined label position N.
6, in the mobile IP v 6 network, home agent passes through the new the Internet Internet Control Message Protocol message informing of definition by binding response message notice mobile node or home agent:
The mobile IP v 6 network, home agent is replied in BA (Binding Acknowledgement) message by binding and is carried notice, in keeping the position, use one to use new option to represent to ask again the home agent notice, for example ask the HA option again as notification indicia or in the mobility option.Binding response message form is as follows:
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Status |K| Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Sequence?# | Lifetime |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
. Mobility?options .
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Perhaps, home agent is by defining new the Internet Internet Control Message Protocol message informing:
For example, define new ICMPv6 (the Internet Internet Control Message Protocol version 6, Internet ControlMessage Protocol for the Internet Protocol Version 6) message informing mobile node, newly-increased ICMP message are asked the home agent notice again.Its message format is as follows:
0 1 2 3
0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Code | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Identifier |A| Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Options... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Type ICMPv6 type of message uses new types value 155 here;
Code, code puts 0;
Checksum ICMP verification and Identifier, identifier is used for distinguishing the identifier of different home agent assignment messages;
The A position is a response bits; If home agent puts 1, the mobile IP v 6 client must send response message;
Reserved keeps the position, puts 0 now.Be used for expansion in the future, also can have option, whether expression asks to distribute home agent immediately again;
7, strengthen in the network at mobile IPv 4, when replying the registration reply RRP message of mobile IP login information, the present invention can use the expansion of mobile IPv 4 manufacturer, the notice of carrying network side entity, can not discern the mobile node of this expansion can ignore, and does not handle.Network side entity HA or PDSN carry the expansion of described manufacturer in RRP message.
Concrete message format is:
0 1 2 3
0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Length | Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Vendor/Org-ID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Vendor-NVSE-Type |?Vendor-NVSE-Value...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Wherein, Type, type.General manufacturer expansion number is made as 134;
Length, length, the length of this expansion, unit is a byte;
Reserved keeps the position, puts 0;
Vendor/Org-ID, manufacturer or organization id for 3GPP2, should be 5535;
Vendor-NVSE-Type manufacturer expansion type can define a new type and represent to ask again the HA notice, as be 111;
Vendor-NVSE-Value, manufacturer's expanding value need be asked HA again as 0 expression.
At the step a2 in the method for a kind of modifying local proxy of mobile node provided by the invention: this mobile node is redistributed home agent to the access zone network request;
Wherein, described request is redistributed the request mode of home agent and is:
Initiate to ask when mobile node is asked immediately, mobile node is asked, initiated to ask behind the important application conversation end in initiation behind the current active conversation end or mobile node re-registers next time.
At the step a3 in the method for a kind of modifying local proxy of mobile node provided by the invention: access zone network is that this mobile node distributes home agent;
Wherein, the described method of redistributing home agent comprises:
In the mobile IPv 4 network, as shown in Figure 3, use remote customer dialing authentication service RADIUS (Remote Authentication Dial-in User Service) agreement, dynamically distribute the flow process of home agent specific as follows on visit ground for mobile node:
Set up the PPP session between portable terminal and the PDSN;
PDSN sends agent advertisement to portable terminal;
Mobile node sends the register requirement rrq message to PDSN, wherein, home address in the login request message (HoA) field is made as 0, the expression request dynamic is distributed home address, the home agent field is made as 0.0.0.0, expression can distribute HA on visit ground, if the home agent field is made as 255.255.255.255, then the expression request is at local network allocation home agent;
PDSN sends RADIUS and inserts request (Access-Request) message to hometown AAA server, with the authentication mobile node;
Wherein, in the radius access request message, also comprise local home agent distribution capability manufacturer particular community, Local-HA-Assignment-Capability VSA, expression visited network have the ability at visit ground dynamic assignment HA;
Behind the hometown AAA server success identity mobile node, reply RADIUS and insert approval (Access-Accept) message;
Wherein, RADIUS inserts in the approval message, comprises local home agent assigns authorized manufacturer particular community, Local-HA-Assignment-Authorized VSA, and expression authorizes access zone network to distribute home agent to mobile node;
PDSN distributes a home agent from access zone network to mobile node based on the access zone network strategy;
So far, access zone network is that mobile node distributes home agent;
Afterwards, PDSN transmits the home agent of the login request message of mobile node to newly assigned access zone network;
The home agent of access zone network is that mobile node distributes a home address HoA;
The home agent of access zone network sends RADIUS and inserts request message to hometown AAA server, with the authentication mobile node, asks the key between aaa server distribution mobile node and home agent simultaneously;
Hometown AAA server inserts request message to described RADIUS and authenticates, and generates the local proxy of mobile node key;
Hometown AAA server sends RADIUS and inserts the home agent of approval message to access zone network, and carries local proxy of mobile node and share the particular community MN-HA-Shared-Key VSA of key manufacturer;
The home agent of access zone network sends registration reply message to PDSN, comprises local proxy of mobile node authentication extension (the MN-HA Authentication Extension) information of using MN-HA-Shared key to calculate in this register requirement;
PDSN transmits this registration reply message and gives mobile node;
Mobile node local proxy of mobile node (MN-HA) key of deriving, and the local proxy of mobile node authentication extension information in the registration reply message transmitted of verification PDSN.
In the mobile IP v 6 network, as shown in Figure 4, use radius protocol, dynamically distribute the flow process of home agent specific as follows on visit ground for mobile node:
Begin access authentication process between mobile node and the PDSN;
PDSN sends RADIUS and inserts request message to the local radius server;
Wherein, PDSN supports the local home agent that distributes, PDSN inserts at RADIUS and comprises the local distribution capability particular community MIP6-HA-Local-Assignment-Capability VSA of manufacturer of mobile IP v 6 home agent in the request message, with the expression local network ability of distributing home agent is arranged;
Behind the radius server authentication success of local, distribute the home agent of a home network to give mobile node, authorize access zone network can distribute home agent to give mobile node simultaneously;
The local radius server sends RADIUS and inserts approval message to PDSN, comprise the home address that home network distributes in this access approval message, in message, also comprise simultaneously home agent mandate manufacturer particular community, HA-Authorized VSA, expression authorizes access zone network when mobile node has request, can distribute the home agent on visit ground to give mobile node;
The hometown-agent-address that PDSN storage home network distributes is used for distributing to mobile node when the home agent of mobile node request home network; If the home agent on mobile node request visit ground, the home agent that PDSN will can not distribute the home network of this storage to distribute.
Access authentication process is finished between mobile node and the PDSN;
Mobile node sends DHCPv6 information request (Information-request) message and gives PDSN, request mobile IP v 6 bootstrapping information;
Wherein, in this DHCPv6 information request message, the network access Identifier that comprises mobile node, here mobile node request distributes home agent at access zone network, so mobile node comprises home network sign option in the DHCPv6 information request message, Home Network Identifier Option, and the sign type field in the option is made as 0, the information such as home agent on expression request visit ground.
PDSN is that mobile node distributes a home agent from access zone network;
PDSN replys response message and gives mobile node, and comprises home agents list in this message, and mobile node can use the home agent in the home agents list to carry out mobile IP v 6 registration binding.
So far, the invention describes a kind of mechanism of modifying local proxy of mobile node, a kind of method of modifying local proxy of mobile node has been described, this method is applicable to the network that all support visit ground dynamic assignment home agent, for example WCDMA HRPD, Wimax (the little access interoperability in the Worldwide Interoperability forMicrowave Access whole world), CDMA evolvement network etc.
The method of modifying local proxy of mobile node provided by the present invention, the home agent that makes mobile node can use local networks to distribute all the time carries out data communication, has avoided route circuitous, has reduced service delay.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. the method for a modifying local proxy of mobile node is characterized in that, comprising:
Support the mobile node of visit ground dynamic assignment home agent to know that the network at its current place and the home agent place network of current registration binding are not consolidated networks;
This mobile node is redistributed home agent to the access zone network request;
Access zone network distributes home agent for this mobile node.
2. method according to claim 1 is characterized in that, the request mode of home agent is redistributed in described mobile node request, comprising:
Mobile node is asked immediately, mobile node is initiated request at initiation request behind the current active conversation end, mobile node at initiation request or mobile node behind the important application conversation end next time when re-registering.
3. method according to claim 1 is characterized in that, described mobile node knows that the home agent place network of the network at its current place and current registration binding is not that the method for consolidated network is:
Judge that by mobile node described network is not consolidated network or judges that by network side entity described network is not a consolidated network, and the notice mobile node, described network side entity is IAD or home agent.
4. method according to claim 3 is characterized in that, mobile node judges that described network is not that the method for consolidated network is:
Mobile node compares network identity and the current place network identity of preserving, if it is inequality, think that then the network that inserts changes, described network is not a consolidated network, and described network identity comprises system identification, NID, Mobile Country Code MCC or Mobile Network Code.
5. method according to claim 3 is characterized in that, mobile node judges that described network is not that the method for consolidated network is:
Mobile node is used by aerial transmission configuration and is obtained the current place of this mobile node network information;
Mobile node compares the network information and the current place network information of preserving, if inequality, thinks that then the network that inserts changes, and described network is not a consolidated network.
6. method according to claim 3 is characterized in that, mobile node judges that described network is not that the method for consolidated network is:
In Mobile Internet Protocol edition 4 network, when mobile node inserts new IAD, receive the agent advertisement that this new IAD sends;
Mobile node compares the foreign agent care-of address in the agent advertisement of the foreign agent care-of address preserved and current reception, if do not have identically, thinks that then the network of access changes, and described network is not a consolidated network.
7. method according to claim 3 is characterized in that, mobile node judges that described network is not that the method for consolidated network is:
In Mobile Internet Protocol version 6 networks, when mobile node inserts new gateway, receive the router advertisement that this access new gateway sends;
If the Care-of Address that mobile node is preserved does not belong to the address prefix scope in the router advertisement of current reception, think that then the network that inserts changes, described network is not a consolidated network.
8. method according to claim 3 is characterized in that, the described network of network side entity notice mobile node is not that the mode of consolidated network is:
Notify immediately, wait until that mobile node does not have to notify or notice when mobile node re-registers next time after the active session.
9. method according to claim 8 is characterized in that, the described network of network side entity notice mobile node is not that the method for consolidated network is:
Network side entity is notified, is notified, notifies mobile node or pass through the new the Internet Internet Control Message Protocol message informing mobile node of definition by agent advertisement by the expansion of ppp protocol manufacturer by the transmission of aerial transmission configuration mode.
10. method according to claim 8 is characterized in that, the described network of network side entity notice mobile node is not that the method for consolidated network is:
In Mobile Internet Protocol edition 4 network, network side entity is recalled the message informing mobile node by registration reply message or registration.
11. method according to claim 8 is characterized in that, the described network of network side entity notice mobile node is not that the method for consolidated network is:
In Mobile Internet Protocol version 6 networks, IAD notifies mobile node, home agent to pass through the new the Internet Internet Control Message Protocol message informing mobile node of definition by binding response message notice mobile node or home agent by router advertisement.
12., it is characterized in that home agent judges that described network is not that the method for consolidated network is according to claim 3 or 8 described methods:
In Mobile Internet Protocol edition 4 network or version 6 networks, when mobile node re-registers, home agent judges whether the Care-of Address in the mobile node registration message belongs to the address realm of home agent place network, if do not belong to, think that then the network that inserts changes, described network is not a consolidated network.
13., it is characterized in that gateway judges that described network is not that the method for consolidated network is according to claim 3 or 8 described methods:
In Mobile Internet Protocol edition 4 network or version 6, when mobile node re-registers, IAD authenticates to authentication, mandate, record keeping aaa server, and aaa server returns to IAD with the home agent place network information of this mobile node use last time;
IAD compares home agent place internet message and the IAD place network that aaa server returns, if inequality, thinks that then the network that inserts changes, and described network is not a consolidated network.
14. method according to claim 1 is characterized in that, in Mobile Internet Protocol edition 4 network, access zone network is the method that mobile node distributes home agent, comprising:
Mobile node sends register requirement, and the expression request is at access zone network dynamic assignment home agent;
IAD authenticates this mobile node to aaa server;
IAD is that mobile node distributes visit ground home agent, and transmits register requirement and give visit ground home agent, and visit ground home agent is that mobile node distributes home address.
15. method according to claim 1 is characterized in that, in Mobile Internet Protocol version 6 networks, access zone network is the method that this mobile node distributes home agent, comprising:
Mobile node sends DHCP, and request distributes visit ground home agent;
IAD is that mobile node distributes visit ground home agent.
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| CNA2006101634584A CN101198157A (en) | 2006-12-05 | 2006-12-05 | Method for modifying local proxy of mobile node |
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| CNA2006101634584A CN101198157A (en) | 2006-12-05 | 2006-12-05 | Method for modifying local proxy of mobile node |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125310A (en) * | 2013-04-23 | 2014-10-29 | 王正伟 | Semi-permanent address based message sending method |
| CN104811965A (en) * | 2014-01-26 | 2015-07-29 | 中兴通讯股份有限公司 | Method and apparatus for optimizing network resources of terminal |
-
2006
- 2006-12-05 CN CNA2006101634584A patent/CN101198157A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125310A (en) * | 2013-04-23 | 2014-10-29 | 王正伟 | Semi-permanent address based message sending method |
| CN104125310B (en) * | 2013-04-23 | 2019-08-13 | 王正伟 | Message method based on semi-permanent address |
| CN104811965A (en) * | 2014-01-26 | 2015-07-29 | 中兴通讯股份有限公司 | Method and apparatus for optimizing network resources of terminal |
| CN104811965B (en) * | 2014-01-26 | 2019-06-11 | 中兴通讯股份有限公司 | A kind of method and device of terminal optimized Internet resources |
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