CN103037352B - Node communication method and communication system at roam between proxy mobile internet protocol (PMIP) regions - Google Patents
Node communication method and communication system at roam between proxy mobile internet protocol (PMIP) regions Download PDFInfo
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- CN103037352B CN103037352B CN201110301441.1A CN201110301441A CN103037352B CN 103037352 B CN103037352 B CN 103037352B CN 201110301441 A CN201110301441 A CN 201110301441A CN 103037352 B CN103037352 B CN 103037352B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
- H04W8/12—Mobility data transfer between location registers or mobility servers
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Abstract
The invention discloses a node communication method and a communication system at roam between proxy mobile internet protocol (PMIP) regions. A terminal node MN roams from an attribution PMIP region which supports route optimization to a visit PMIP region which supports route optimization, and the visit PMIP region allocates the MN a roam identity which represents the position information in the visit PMIP region, and binds the roam identity and a home network prefix of the MN, and informs the roam identity to the attribution PMIP region. The attribution PMIP region binds the home network prefix of the MN and the roam identity. In a primary data transmission process from a corresponding node to the MN, the attribution PMIP region inquires the roam identity according to the home network prefix of the MN, and the PMIP region which the corresponding node belongs to sends a primary data packet to the visit PMIP region, and the primary data packet takes an identifier server in the visit PMIP region as a target network element. The node communication method provides a solving way for communication at roam between the PMIP regions.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of node communication method and communication system in PMIP domains internetwork roaming
System.
Background technology
Transmission control protocol/Internet Protocol (Transmission Control Protocol/Internet
Protocol, abbreviation TCP/IP), do not consider that terminal can occur the situation of topology location change, i.e. TCP/IP in initial designs
Agreement does not support mobility in itself.In traditional TCP/IP network environments, IP is that internet (Internet) provides route
Function, it is all assigned with logical address, i.e. IP address to all nodes (including main frame and router), and every main frame each
An IP address is all distributed in port.IP address includes network prefix and host machine part, the IP of the All hosts on same link
Generally there are identical network prefix and different host machine parts in address.This allows IP according to the net of the IP address of destination node
Network prefix part is routed so that router order preserves simple prefix router, without for
Every main frame preserves an individually route.In this case, as a result of prefix router, therefore when node from
To another link without changing during its IP address, the node then can not possibly receive data to bar link switching on new link
Message, so as to also cannot just be communicated with other nodes.
As user steeply rises to the demand of mobility and information, increasing people wishes high during movement
Internet is accessed fastly, the information being badly in need of is obtained, and the thing done is wanted in completion.Therefore, mobile Internet turns into Future Internet
Developing direction, but conventional TCP/IP agreement does not support ambulant defect so that and the mobile management to terminal node turns into
The a great problem that mobile Internet is faced.
In order to solve the problems, such as mobile management, the popular mobile management technology of industry e.g., moves IP (Mobile
IP, MIP), proxy-mobile IP (Proxy MIP, PMIP) etc., support end by way of introducing fixed anchor point (Anchor)
The mobility at end.For example, MIP agreements use local shifting using home agent (Home agent, HA) as anchor point, PMIP agreements
Dynamic property anchor point (Local Mobility Anchor, LMA) is used as anchor point.
Shown in Fig. 1 be PMIP agreements logical architecture, including terminal node (Mobile Node, MN), peer node
(Correspondent Node, CN), Mobile Access Gateway (Mobile Access Gateway, MAG) and local mobility anchor
Point (Local MobilityAnchor, LMA).Wherein CN can be stationary nodes, or mobile node, i.e., with corresponding
MAG and LMA.MAG is first hop router of MN, and it is its distribution Care-of Address that its Main Function is included in when MN is accessed
(Care of Address, CoA) and MN is replaced to perform and PMIP bindings (PMIP Binding) between the anchor point LMA of MN.
LMA as MN anchor point, its Main Function include for MN distribute home address (Home of Address, HoA) and treatment on
State PMIP bindings.The main purpose of the PMIP bindings performed between MAG and LMA is to allow both sides to know the address of other side, go up
CoA and HoA is stated, and binding relationship is stored in locally.Additionally, in the binding procedure for performing PMIP, also for MN in MAG and
A bidirectional tunnel is established between LMA.What deserves to be explained is, the IP address that MN finally gets is that LMA is its distribution
HoA.In common network design, MAG is normally at the relatively low position of topology, such as positioned at the edge of Metropolitan Area Network (MAN)；And LMA is then
Topology position higher is normally at, such as saves the core of dry net.Actually often through multi-hop road between MAG and LMA
It is connected by device.
In order that the path for obtaining packet transmission is optimal, when terminal node and peer node are in same PMIP domains
Within when, terminal node or peer node can be got other end of current using the MAG of local terminal from other network elements
Service MAG, so as to set up a direct link between two MAG, without packet is routed into LMA again, subtracts significantly
The detour problem of route is lacked.In order to mutually be distinguished with traditional PMIP domains, above-mentioned domain is regarded as supporting the PMIP domains of routing optimality.
The system architecture of PMIP domains intermediate node roaming supports routing optimality as shown in Fig. 2 the PMIP domains can be divided into
PMIP domains and the i.e. traditional PMIP domains in PMIP domains of routing optimality are not supported.For the PMIP domains for supporting routing optimality, except tradition
Network element MAG outside, comprising a mapping server (Mapping Server, MAPS), be substantially carried out node location management and
The work such as address mapping relation maintenance.One or more are comprised in addition for the Interworking gateway with other PMIP domains intercommunications
(Interworking Gateway, IGW), its main function includes being carried out and the PMIP domains of other support routing optimalities between
Signalling exchange, while being also the data outlet between this PMIP domains and other PMIP domains, implements, can be on the border in domain
Multiple Interworking gateway are set, for destination node in the case of not same area, different intercommunications are selected according to route principle of optimality
Gateway.In addition, Interworking gateway can be closed with border router setting, or a single equipment.In order to ensure foreign lands
Packet can reach Interworking gateway, and Interworking gateway needs HoA/ home network prefix of the overseas broadcast belonging to it.
The current PMIP network architectures are all based on terminal node under identical local mobile anchor in same PMIP domains
Movement, and the method that terminal roams into another PMIP domain from a PMIP domain is not defined also, particularly terminal
The method of the routing optimality roamed between the PMIP domains for supporting routing optimality.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of node communication method in PMIP domains internetwork roaming and communication
System, solves communication issue of the node in PMIP domains internetwork roaming.
In order to solve the above-mentioned technical problem, the invention provides a kind of node communication method in PMIP domains internetwork roaming,
Wherein, it is described after terminal node roams into the visit PMIP domains for supporting routing optimality from the ownership PMIP domains of support routing optimality
Visit PMIP domains are the roaming that the terminal node distribution represents terminal node positional information in the visit PMIP domains
Identify and simultaneously bind the home network prefix of the roaming identity and the terminal node, also notify to described this roaming identity
Ownership PMIP domains, the ownership PMIP domains are bound by the home network prefix of the terminal node and the roaming identity；It is described
In peer node to the first transmission of data packets of the terminal node, family of the ownership PMIP domains according to the terminal node
Township's network prefix inquires the roaming identity, and the PMIP domains belonging to the peer node are visitd according to the roaming identity with described
Mapping server is visited in PMIP domains for purpose network element sends to the visit PMIP domains the first packet.
Further, the above method can also have the characteristics that：
After terminal node roams into the visit PMIP domains for supporting routing optimality from the ownership PMIP domains of support routing optimality, institute
State Mobile Access Gateway belonging to terminal node and send agent binding update to mapping server, the mapping server directly or
The roaming identity is sent into Interworking gateway belonging to the terminal node, the intercommunication net via the Mobile Access Gateway
Pass notifies to the ownership PMIP domains roaming identity.
Further, the above method can also have the characteristics that：
The mapping server in the visit PMIP domains is by the home network prefix of the terminal node and the roaming identity
Binding；
When the peer node is located at the visit PMIP domains, the peer node sends first packet mistake to terminal node
Cheng Zhong, the Mobile Access Gateway belonging to the peer node is using the home network prefix of the terminal node to mapping server
The information of the affiliated Mobile Access Gateway of the terminal node is inquired about, the mapping server in the visit PMIP domains is according to the local
Network prefix inquires the roaming identity, and the data is activation to peer node is realized in the visit PMIP domains.
Further, the above method can also have the characteristics that：
When the peer node is located at the visit PMIP domains, the terminal node sends first packet mistake to peer node
Cheng Zhong, the terminal node sends first packet to the Mobile Access Gateway in the visit PMIP domains, this Mobile Access Gateway to
The mapping server in the visit PMIP domains inquires peer node positional information, by the first packet via described to end segment
Mobile Access Gateway belonging to point is sent to the peer node.
Further, the above method can also have the characteristics that：
When the peer node is located at the PMIP domains outside the visit PMIP domains, the terminal node is sent out to peer node
Send in first process data packet, the terminal node sends first packet to the Mobile Access Gateway in the visit PMIP domains, this shifting
Dynamic access gateway is inquired about peer node positional information and receives the mapping services to the mapping server in the visit PMIP domains
After the inter-domain communication that device sends is indicated, the first packet is sent the PMIP domains belonging to the peer node.
Further, the above method can also have the characteristics that：
When the peer node is located at the ownership PMIP domains, described in the Mobile Access Gateway in the ownership PMIP domains is received
After peer node is sent to the first packet of the terminal node, using the home network prefix of the terminal node to the ownership
The mapping server in PMIP domains knows the roaming identity when inquiring about the positional information of the terminal node, according to the roaming mark
Knowledge is sent into the visit PMIP domains the first packet as purpose network element with mapping server in the visit PMIP domains
Mapping server, mapping server will be described via the Mobile Access Gateway belonging to the terminal node in the visit PMIP domains
First packet is sent to the terminal node.
Further, the above method can also have the characteristics that：
The peer node is located at other the support routing optimalities outside the ownership PMIP domains and the visit PMIP domains
PMIP domains when, the Interworking gateway in the ownership PMIP domains receives described from the Interworking gateway in the affiliated PMIP domains of the peer node
After peer node is sent to the first packet of the terminal node, using the home network prefix of the terminal node to the ownership
The mapping server in PMIP domains knows the roaming identity when inquiring about the positional information of the terminal node, according to the roaming mark
Knowledge is sent into the visit PMIP domains the first packet as purpose network element with mapping server in the visit PMIP domains
Mapping server, mapping server will be described via the Mobile Access Gateway belonging to the terminal node in the visit PMIP domains
First packet is sent to the terminal node.
Further, the above method can also have the characteristics that：
The peer node is located at the support routing optimality outside the ownership PMIP domains and the visit PMIP domains
During PMIP domains, the Interworking gateway in the PMIP domains belonging to the peer node receives the peer node and is sent to the terminal node
After first packet, the Interworking gateway via the ownership PMIP domains is returned using the home network prefix of the terminal node to described
The mapping server in category PMIP domains inquires about the positional information of the terminal node and knows the roaming identity, the peer node
The first packet is sent into the visit PMIP domains and reflected by the Interworking gateway in affiliated PMIP domains according to the roaming identity
Penetrate server, in the visit PMIP domains mapping server via the Mobile Access Gateway belonging to the terminal node by the head
Packet is sent to the terminal node.
Further, the above method can also have the characteristics that：
The Interworking gateway in the ownership PMIP domains inquires about the terminal node to the mapping server in the ownership PMIP domains
Positional information when know the roaming identity after, the roaming identity is notified into the institute into the affiliated PMIP domains of the peer node
State the Interworking gateway belonging to peer node；Interworking gateway belonging to the peer node receives the peer node and is sent to the end
After the follow-up data bag of end node, the visit PMIP domains are sent directly to.
Further, the above method can also have the characteristics that：
Be sent to for mobile access gateway address belonging to the terminal node by the mapping server in the visit PMIP domains
The Interworking gateway in opposite end PMIP domains.
Further, the above method can also have the characteristics that：
It is described when the peer node is located at the traditional PMIP domains outside the ownership PMIP domains and the visit PMIP domains
The Interworking gateway in ownership PMIP domains receives the peer node hair from the local mobile anchor in the affiliated PMIP domains of the peer node
Toward after the first packet of the terminal node, home network prefix the reflecting to the ownership PMIP domains of the terminal node is used
The roaming identity is known during the positional information for penetrating terminal node described in server lookup, is visitd with described according to the roaming identity
Mapping server is visited in PMIP domains for the first packet is sent the mapping server into the visit PMIP domains by purpose network element,
Mapping server sends out the first packet via the Mobile Access Gateway belonging to the terminal node in the visit PMIP domains
Deliver to the terminal node.
Further, the above method can also have the characteristics that：
The local mobile anchor in the affiliated PMIP domains of peer node receives the peer node and is sent to the terminal node
Follow-up data bag after, be forwarded to the visit PMIP domains via the ownership PMIP domains.
Further, the above method can also have the characteristics that：
The terminal node is switched to target Mobile Access Gateway, institute from the source Mobile Access Gateway in the visit PMIP domains
The mapping server or the target Mobile Access Gateway or the source Mobile Access Gateway for stating visit PMIP domains will be described
The address of target Mobile Access Gateway is notified belonging to Interworking gateway and the peer node to the ownership PMIP domains
The Mobile Access Gateway in PMIP domains.
In order to solve the above-mentioned technical problem, present invention also offers a kind of node communication system in PMIP domains internetwork roaming
System, wherein, including the support routing optimality belonging to terminal node, peer node, terminal node ownership PMIP domains, terminal node
PMIP domains belonging to the visit PMIP domains of affiliated support routing optimality, the peer node；
The visit PMIP domains, for roaming into support route from the ownership PMIP domains of support routing optimality in terminal node
It is that the terminal node distribution represents the terminal node in visit PMIP domains middle position confidence behind the visit PMIP domains of optimization
The roaming identity of breath simultaneously binds the roaming identity with the home network prefix of the terminal node, also leads to this roaming identity
Know to the ownership PMIP domains；
The ownership PMIP domains, for the home network prefix of the terminal node and the roaming identity to be bound；Also
For in the first transmission of data packets of the peer node to the terminal node, the local net according to the terminal node
Network prefix lookups are to the roaming identity；
PMIP domains belonging to the peer node, are additionally operable to be mapped with the visit PMIP domains according to the roaming identity
Server is sent to the visit PMIP domains the first packet for purpose network element.
Further, said system can also have the characteristics that：
The visit PMIP domains include mapping server；The ownership PMIP domains include mapping server；
The mapping server in the visit PMIP domains, for representing the terminal node in institute for terminal node distribution
State the roaming identity of positional information in visit PMIP domains and by the home network prefix of the roaming identity and the terminal node
Binding；
The mapping server in the ownership PMIP domains, the roaming for knowing the terminal node from the visit PMIP domains
After mark, and the roaming identity is bound with the home network prefix of the terminal node.
Further, said system can also have the characteristics that：
The ownership PMIP domains include Mobile Access Gateway；
The Mobile Access Gateway in the ownership PMIP domains, the head of the terminal node is sent to for receiving the peer node
After packet, the end is inquired about to the mapping server in the ownership PMIP domains using the home network prefix of the terminal node
Know the roaming identity during positional information of end node, and by the first packet via the ownership PMIP domains intercommunication net
Close the mapping server sent to the visit PMIP domains.
Further, said system can also have the characteristics that：
The ownership PMIP domains include Interworking gateway；
The Interworking gateway in the ownership PMIP domains, the first data of the terminal node are sent to for receiving the peer node
Bao Hou, the terminal section is inquired about using the home network prefix of the terminal node to the mapping server in the ownership PMIP domains
Know the roaming identity during positional information of point, and the first packet is sent to the mapping services in the visit PMIP domains
Device.
Further, said system can also have the characteristics that：
The Interworking gateway in the ownership PMIP domains, is additionally operable to the mapping server from the ownership PMIP domains and knows described overflowing
After vernier is known, the roaming identity is notified to the visit PMIP domains.
Further, said system can also have the characteristics that：
The affiliated PMIP domains of peer node include Interworking gateway；
The Interworking gateway in the affiliated PMIP domains of peer node, sends out for receiving the peer node to the terminal node
After the first packet for sending, the terminal node is inquired about to the ownership PMIP domains using the home network prefix of the terminal node
Positional information when know the roaming identity after, the first packet is sent to the visit according to the roaming identity
Domain.
In order to solve the above-mentioned technical problem, present invention also offers a kind of mapping server, wherein, the mapping server
Including roaming identity processing module；The roaming identity processing module, for unrestrained as terminal node in the mapping server
It is that the terminal node distribution represents the terminal node described during mapping server in visit PMIP domains affiliated after trip
The roaming identity of positional information and the roaming identity is tied up with the home network prefix of the terminal node in visit PMIP domains
It is fixed, also this roaming identity is notified to the ownership PMIP domains.
In order to solve the above-mentioned technical problem, present invention also offers a kind of mapping server, wherein, the mapping server
Including roaming identity processing module；The roaming identity processing module, in the mapping server as terminal node
When belonging to the mapping server in PMIP domains, receive and inquired about to mapping server using the home network prefix of the terminal node
After the request of the end node locations, the roaming identity is provided to requesting party.
Communication issue of this programme for node in PMIP domains internetwork roaming provides solution.
Brief description of the drawings
Fig. 1 is the structure system schematic diagram of existing PMIP systems；
Fig. 2 is the system architecture diagram of PMIP domains intermediate node roaming；
Fig. 3 is the schematic diagram of the node communication method in PMIP domains internetwork roaming；
Fig. 4 is that terminal is supporting the registration of the PMIP domains internetwork roaming of routing optimality and the method implementation method one of location updating
Schematic diagram；
Fig. 5 is that terminal is supporting the registration of the PMIP domains internetwork roaming of routing optimality and the method implementation method two of location updating
Schematic diagram；
Fig. 6 is the routing optimization method schematic diagram of inter-node communication when opposite end is located at the visit PMIP domains of terminal；
Fig. 7 is the routing optimization method schematic diagram of inter-node communication when opposite end is located at the ownership PMIP domains of terminal；
Fig. 8 is that the routing optimization method of inter-node communication when opposite end is located at the PMIP domains of other support routing optimalities is illustrated
Figure；
Fig. 9 is that the routing optimization method of inter-node communication when opposite end is located at the PMIP domains of other support routing optimalities is illustrated
Figure；
Figure 10 is the routing optimization method schematic diagram of inter-node communication when opposite end is located at tradition PMIP domains；
Figure 11 is the terminal method schematic diagram that address information updates after visit domain occurs across MAG switching.
Specific embodiment
As shown in figure 3, the node communication method in PMIP domains internetwork roaming includes：
After terminal node roams into the visit PMIP domains for supporting routing optimality from the ownership PMIP domains of support routing optimality, institute
It is that the terminal node distribution represents that terminal node positional information in the visit PMIP domains is overflow to state visit PMIP domains
Vernier is known and the roaming identity is bound with the home network prefix of the terminal node, also notifies to institute this roaming identity
Ownership PMIP domains are stated, the home network prefix of the terminal node and the roaming identity are bound in the ownership PMIP domains；
In the peer node to the first transmission of data packets of the terminal node, the ownership PMIP domains are according to
The home network prefix of terminal node inquires the roaming identity, and the PMIP domains belonging to the peer node are according to the roaming
Mark is sent to the visit PMIP domains the first packet by purpose network element of mapping server in the visit PMIP domains.
After terminal node roams into the visit PMIP domains for supporting routing optimality from the ownership PMIP domains of support routing optimality, institute
State Mobile Access Gateway belonging to terminal node and send agent binding update to mapping server, the mapping server directly or
The roaming identity is sent into Interworking gateway belonging to the terminal node, the intercommunication net via the Mobile Access Gateway
Pass notifies to the ownership PMIP domains roaming identity.Described in detail below by Fig. 4 and Fig. 5.
The registration of the PMIP domains internetwork roaming of routing optimality and the embodiment of the method for location updating are being supported with reference to Fig. 4 terminals
One, implement step as follows：
Step 401, terminal node carries out access authentication in visit domain.
Terminal can initiate access authentication flow by MAG2 (can be responsible for authentication, or by AAA during this by MAPS
Be responsible for authentication, or be responsible for authentication by other network elements), and the MAPS2 for visiting domain may need by Interworking gateway IGW1 and
IGW2 is interacted with the ownership MAPS1 of terminal node and user is authenticated, therefore MAPS2 will get terminal node
HNP。
Step 402, MAG2 initiates agent binding update to MAPS2, and MAPS2 is that terminal node distributes roaming identity, may be used also
Bound with terminal HNP with by this terminal roaming mark.
This roaming identity be MAPS2 distribution one mark, form can be an IP address, outside this PMIP domain with
This IP address will be routed to the IGW network elements in this PMIP domain for the packet of purpose address, and IGW can be according to this roaming identity
Judge that this packet is destined for roaming into the terminal in this domain.
Roaming identity is a mark of MAPS2 distribution, and form can be an IP address, with this IP address as destination
The packet of location will be routed to the MAPS2 network elements in this PMIP domain；Further, MAPS2 can be different roaming service customer point
With the different roaming identities with uniqueness, it is advantageous in that using uniqueness roaming identity：For MAPS2, mesh is being received
Address for roaming identity packet when, you can only specific roaming service customer is just can recognize that according to roaming identity.
Agent binding response is returned to MAG2 by step 403, MAPS2, can carried terminal HNP, roaming identity in this message.
The IP address of carrying MAPS1 is now also needed, so that follow-up MAG is to MAPS1 initiating terminal location updatings.
Step 404~406, to MAPS1 initiating terminal location updatings, this message may be by Interworking gateway IGW1 for MAG2
And IGW2, while terminal roaming mark can also be carried to MAPS1, MAPS1 can be carried out this terminal roaming mark and terminal HNP
Binding.
Step 407~409, MAPS1 sends updating of terminal position and responds to MAG2, and this message may be by Interworking gateway
IGW1 and IGW2.
Step 410, MAG2 sends router advertisement message to terminal, carries the HNP of roaming terminal.This step may be complete
Sent after into step 403, it is not necessary to wait updating of terminal position to respond and return.
The registration of the PMIP domains internetwork roaming of routing optimality and the embodiment of the method for location updating are being supported with reference to Fig. 5 terminals
Two, implement step as follows：
Step 501, terminal node carries out access authentication in visit domain.
Terminal can initiate access authentication by MAG2 to MAPS2, and the MAPS2 for visiting domain may be needed by Interworking gateway
IGW1 and IGW2 is interacted with the ownership MAPS1 of terminal node and user is authenticated, therefore MAPS2 will get terminal
The HNP of node.
Step 502, MAG2 initiates agent binding update to MAPS2, and now MAPS2 can distribute a roaming for terminal node
Mark, while this terminal roaming mark can be bound with terminal HNP.
Step 503~505, to MAPS1 initiating terminal location updatings, this message may be by Interworking gateway for MAPS2
IGW1 and IGW2, while terminal roaming mark can also be carried to MAPS1, MAPS1 can be by this terminal roaming mark and terminal HNP
Bound.
Step 506~508, MAPS1 sends updating of terminal position and responds to MAPS2, and this message may be by intercommunication net
Close IGW1 and IGW2.
Agent binding response is returned to MAG2 by step 509, MAPS2.This message can be performed after step 402
Step 510, MAG2 sends router advertisement message to terminal, carries the HNP of roaming terminal.
After terminal completes registration and the location updating of PMIP domains internetwork roaming, the mapping relations constructed in each network element in system are such as
Under：
MAPS1：MN marks, HNP, roaming identity
IGW1：MN is identified, roaming identity, HNP, CoA
MAPS2：MN marks, HNP, roaming identity, CoA
MAG2：MN marks, HNP, CoA, roaming identity (only Fig. 4)
IGW2：MN is identified, roaming identity
MAG3：HNP, roaming identity, CoA
IGW3：Roaming identity, HNP, CoA
Hereafter in method description, first packet refers to that routed path determination process is carried out between terminal node and peer node
The packet of middle transmission, follow-up data bag refers to determine the packet after routed path.
CN is located at the situation in the visit PMIP domains of MN.
The peer node sends in first process data packet to terminal node, and the Mobile Access Gateway belonging to peer node makes
The letter of the affiliated Mobile Access Gateway of terminal node is inquired about to mapping server with the home network prefix of the terminal node
Breath, the mapping server in the visit PMIP domains inquires the roaming identity, is visitd described according to the home network prefix
Visit the data is activation realized in PMIP domains to peer node.
The terminal node sends in first process data packet to peer node, shifting from terminal node to the visit PMIP domains
Dynamic access gateway sends first packet, and this Mobile Access Gateway is inquired to end segment to the mapping server in the visit PMIP domains
Dot position information, the first packet is sent to described to end segment via the Mobile Access Gateway belonging to the peer node
Point.
It is described in detail below by Fig. 6.
The routing optimization method of inter-node communication when being located at the visit PMIP domains of terminal with reference to Fig. 6 opposite ends of the present invention, specifically
Realize that step is as follows：
Step 601, when terminal needs for first packet to be sent to peer node, terminal can send first packet first
To MAG2.
Step 602, MAG2 can inquire about the positional information of peer node to MAPS2.
Step 603, also in this PMIP domains, then MAPS2 can be by the positional information of peer node for MAPS2 discoveries peer node
(for example：CoA or current service MAG addresses) return to MAG2.
First packet is transmitted to step 604, MAG2 the MAG3 of peer node.
Step 605, MAG3 is by first data forwarding to peer node.
The transmission path of the follow-up data bag that MN sends to CN is sent to MAG2 for MN, and MAG2 is sent to MAG3, MAG3 hairs
Deliver to CN.
Step 606, when peer node needs to send first packet to terminal node, peer node can send out first packet
Give MAG3.
Step 607, the HNP of MAG3 meeting using terminals inquires about the address information of its current MAG to MAPS2, and MAPS2 can basis
The HNP of terminal is inquired about, and is the discovery that the terminal for roaming into this domain, and finally inquires the positional information of terminal.
The positional information of terminal is returned to MAG3 by step 608, MAPS2.
First packet is transmitted to MAG2 by step 609, MAG3.
First packet is transmitted to terminal node by step 610, MAG2.
The transmission path of the follow-up first packet that CN sends to MN is sent to MAG3 for CN, and MAG3 is sent to MAG2, MAG2
Send to CN.
In the case that CN is located at the ownership PMIP domains of MN.
MN is sent in first process data packet to CN directions, terminal node to peer node, and the terminal node is visitd to described
The Mobile Access Gateway for visiting PMIP domains sends first packet, mapping server from this Mobile Access Gateway to the visit PMIP domains
Inquiry peer node positional information is simultaneously received after the inter-domain communication that the mapping server sends indicates, and the first packet is sent out
Deliver to the PMIP domains belonging to the peer node.
CN receives the peer node and is sent to the terminal section to MN directions, the Mobile Access Gateway in the ownership PMIP domains
After the first packet of point, inquired about to the mapping server in the ownership PMIP domains using the home network prefix of the terminal node
The roaming identity is known during the positional information of the terminal node, according to the roaming identity being reflected in the visit PMIP domains
Server is penetrated for the first packet is sent mapping server, the visit PMIP into the visit PMIP domains by purpose network element
Mapping server is sent to the terminal the first packet via the Mobile Access Gateway belonging to the terminal node in domain
Node.
Communication method between nodes when being located at the ownership PMIP domains of terminal with reference to Fig. 7 opposite ends, implement step as follows：
Step 701, when terminal needs for first packet to be sent to peer node, terminal can be delivered a packet to first
MAG2。
Step 702, MAG2 can inquire about the positional information of peer node to MAPS2.
Step 703, MAPS2 has found it not in this PMIP domains according to the address information of peer node, then MAPS2 can be to
MAG2 returns to inter-domain communication and indicates.
Step 704, MAG2 forwards first packet to Interworking gateway IGW2.
First data are forwarded a packet to IGW1 by step 705, IGW2.
Step 706, IGW1 inquires about the positional information of peer node to MAPS1.
The positional information of peer node is returned to IGW1 by step 707, MAPS1.
First packet is transmitted to MAG3 by step 708~709, IGW1, and is ultimately forwarded to peer node.
The transmission path of the follow-up data bag in MN to CN directions is MN-MAG2-IGW2-IGW1-MAG3-CN.
Step 710, when peer node needs to send first packet to terminal node, peer node can send out first packet
Give MAG3.
Step 711, the HNP of MAG3 using terminals inquires about its positional information to MAPS1, and MAPS1 is inquired according to terminal HNP
The roaming identity of terminal.
Terminal roaming mark is returned to MAG3 by step 712, MAPS1.
First packet is transmitted to MAPS2 by step 713, MAG3 according to terminal roaming mark.
Step 714, in order to reach the optimization of route, MAPS2 may be by terminal positional information (for example：The ground of MAG2
Location) it is sent to MAG3.
First packet is transmitted to terminal by step 715, MAPS2 by MAG2.
Follow-up packet forward-path by MAG3 directly to MAG2, and will be no longer pass through MAPS and forwarded.CN to MN
The transmission path of the follow-up data bag in direction is CN-MAG3-MAG2-MN.
CN be located at except MN home domain and MN visit domain in addition to support routing optimality PMIP domains in the case of one
Plant implementation.
MN is sent in first process data packet to CN directions, terminal node to peer node, and the terminal node is visitd to described
The Mobile Access Gateway for visiting PMIP domains sends first packet, mapping server from this Mobile Access Gateway to the visit PMIP domains
Inquiry peer node positional information is simultaneously received after the inter-domain communication that the mapping server sends indicates, and the first packet is sent out
Deliver to the PMIP domains belonging to the peer node.
CN to MN directions, the Interworking gateway of the Interworking gateway in the ownership PMIP domains from the affiliated PMIP domains of the peer node
Receive after the peer node is sent to the first packet of the terminal node, using the terminal node home network prefix to
The mapping server in the ownership PMIP domains knows the roaming identity when inquiring about the positional information of the terminal node, according to institute
Roaming identity is stated to send to the visit the first packet as purpose network element with mapping server in the visit PMIP domains
Mapping server in PMIP domains, mapping server is via the Mobile Access Network belonging to the terminal node in the visit PMIP domains
Pass sends to the terminal node the first packet.
The routing optimization method of inter-node communication, tool when being located at the PMIP domains of other support routing optimalities with reference to Fig. 8 opposite ends
Body realizes that step is as follows：
Step 801, when terminal needs for first packet to be sent to peer node, terminal can send first packet first
To MAG2.
Step 802, MAG2 can inquire about the positional information of peer node to MAPS2.
Step 803, MAPS2 has found it not in this PMIP domains according to the address information of peer node, then MAPS2 can be to
MAG2 returns to inter-domain communication and indicates.
Step 804, MAG2 forwards first packet to Interworking gateway IGW2.
First packet is forwarded to MAG3 by step 805, IGW2 by IGW3, and is finally transmitted to peer node.
MN is MN-MAG2-IGW2-IGW3-MAG3-CN to the transmission path of the follow-up data bag in CN directions.
Step 806, when peer node needs to send first packet to terminal node, peer node can send the packet within
To MAG3, and first packet can be transmitted to MAG3 the ownership Interworking gateway IGW1 of terminal by IGW3.
Step 807, the HNP of IGW1 using terminals inquires about its current location information to MAPS1, and MAPS1 is looked into according to terminal HNP
Ask the roaming identity of terminal.
Terminal roaming mark is returned to IGW1 by step 808, MAPS1.
Terminal roaming mark is returned to IGW3 by step 809, IGW1.(this roaming identity may only return to MAG3 institutes
In the IGW in domain, optimization is performed by IGW)
First packet is transmitted to MAPS2 by step 810, IGW1.
First packet is transmitted to terminal by step 811, MAPS2 by MAG2.
Step 812, CN is CN-MAG3-IGW3-MAPS2-MAG2-MN to the transmission path of the follow-up data bag in MN directions.
Follow-up packet forward-path will be transmitted to terminal by MAG3 by IGW3, MAPS2 and MAG2.
Step 813, in order to routing optimality is maximized, MAPS2 may satisfy the need again after the packet for receiving MAG3
By optimizing, then it can be by terminal positional information (for example：The address of MAG2) MAG3 is sent to, the hereafter forwarding road of packet
Footpath will be no longer pass through MAPS2.
CN be located at except MN home domain and MN visit domain in addition to support routing optimality PMIP domains in the case of it is another
Plant implementation.
MN is sent in first process data packet to CN directions, terminal node to peer node, and the terminal node is visitd to described
The Mobile Access Gateway for visiting PMIP domains sends first packet, mapping server from this Mobile Access Gateway to the visit PMIP domains
Inquiry peer node positional information is simultaneously received after the inter-domain communication that the mapping server sends indicates, and the first packet is sent out
Deliver to the PMIP domains belonging to the peer node.
CN receives the peer node and is sent to the terminal to MN directions, the Interworking gateway in the PMIP domains belonging to peer node
After the first packet of node, via the ownership PMIP domains Interworking gateway using the terminal node home network prefix to
The mapping server in the ownership PMIP domains inquires about the positional information of the terminal node and knows the roaming identity, described right
The Interworking gateway in the PMIP domains belonging to end node is sent to the visit PMIP the first packet according to the roaming identity
Mapping server in domain, mapping server will via the Mobile Access Gateway belonging to the terminal node in the visit PMIP domains
The first packet is sent to the terminal node.
The routing optimization method of inter-node communication, tool when being located at the PMIP domains of other support routing optimalities with reference to Fig. 9 opposite ends
Body realizes that step is as follows：
Step 901, when terminal needs for first packet to be sent to peer node, terminal can send first packet first
To MAG2.
Step 902, MAG2 can inquire about the current location information of peer node to MAPS2.
Step 903, MAPS2 has found it not in this PMIP domains according to the address information of peer node, then MAPS2 can be to
MAG2 returns to inter-domain communication and indicates.
Step 904, MAG2 forwards first packet to Interworking gateway IGW2.
First packet is forwarded to MAG3 by step 905, IGW2 by IGW3, and is ultimately forwarded to peer node.
MN is MN-MAG2-IGW2-IGW3-MAG3-CN to the transmission path of the follow-up data bag in CN directions.
Step 906, when peer node needs to send first packet to terminal node, peer node can send out first packet
MAG3 is given, and MAG3 can carry out terminal location inquiry by IGW3 to the home network of terminal node, this message can incoming terminal
Ownership Interworking gateway IGW1.
Step 907, the HNP of IGW1 using terminals inquires about its current location information to MAPS1, and MAPS1 is looked into according to terminal HNP
Ask the roaming identity of terminal.
Terminal roaming mark is returned to IGW1 by step 908, MAPS1.
Terminal roaming mark is returned to IGW3 by step 909, IGW1.
First packet is transmitted to MAPS2 by step 910, IGW3, and further can be transmitted to for first packet by MAPS2
MAG2。
First packet is transmitted to terminal by step 911, MAG2.
Step 912, in order to routing optimality is maximized, MAPS2 may be by terminal positional information (for example：The address of MAG2)
It is sent to MAG3.
Follow-up packet forward-path is directly forwarded to MAG2, and be finally transmitted to terminal by MAG3 by IGW3.
CN is located at the situation in the traditional PMIP domains in addition to home domain and visit domain of MN.
MN is sent in first process data packet to CN directions, terminal node to peer node, and the terminal node is visitd to described
The Mobile Access Gateway for visiting PMIP domains sends first packet, mapping server from this Mobile Access Gateway to the visit PMIP domains
Inquiry peer node positional information is simultaneously received after the inter-domain communication that the mapping server sends indicates, and the first packet is sent out
Deliver to the PMIP domains belonging to the peer node.
CN to MN directions, the local movement of the Interworking gateway in the ownership PMIP domains from the affiliated PMIP domains of the peer node
Anchor point is received after the peer node is sent to the first packet of the terminal node, before the home network using the terminal node
Sew and know the roaming identity, root when inquiring about the positional information of the terminal node to the mapping server in the ownership PMIP domains
The first packet is sent to described by purpose network element of mapping server in the visit PMIP domains according to the roaming identity
Mapping server in visit PMIP domains, mapping server connects via the movement belonging to the terminal node in the visit PMIP domains
Function Access Gateway sends to the terminal node the first packet.
The routing optimization method of inter-node communication, implements step such as when being located at tradition PMIP domains with reference to Figure 10 opposite ends
Under：
Step 1001, when terminal needs for first packet to be sent to peer node, terminal can send out first packet first
Give MAG2.
Step 1002, MAG2 can inquire about the current location information of peer node to MAPS2.
Step 1003, MAPS2 has found it not in this PMIP domains according to the address information of peer node, then MAPS2 can be to
MAG2 returns to inter-domain communication and indicates.
Step 1004, MAG2 forwards first packet to Interworking gateway IGW2.
First data are forwarded a packet to step 1005, IGW2 the LMA3 of peer node, and LMA3 is sent out first packet by tunnel
MAG3 is sent to, and is finally transmitted to peer node.
MN is MN-MAG2-IGW2-IGW3-MAG3-CN to the transmission path of the follow-up data bag in CN directions.
Step 1006, when peer node needs to send first packet to terminal node, peer node can be by first packet
MAG3 is sent to, and MAG3 is forwarded a packet on LMA3 first data using tunnel, the home domain for being then sent to terminal by LMA3 is simultaneously
Intercepted and captured by IGW1.
Step 1007, the HNP of IGW1 using terminals inquires about its current location information to MAPS1, and MAPS1 is according to terminal HNP
Inquire the roaming identity of terminal.
Terminal roaming mark is returned to IGW1 by step 1008, MAPS1.
Terminal roaming mark may be returned to LMA, but LMA because this message, institute cannot be parsed by step 1009, IGW1
Can carry out ignoring treatment.
First packet is transmitted to MAPS2 by step 1010, IGW1.
First packet is forwarded to terminal by step 1011, MAPS2 by MAG2.
Step 1012, MAPS2 may be by terminal positional information (for example：The address of MAG2) it is sent to IGW1.
Follow-up packet forward-path still needs and is forwarded by the Interworking gateway IGW1 of terminal attaching net, then
Reach MAG2.The local mobile anchor in the affiliated PMIP domains of peer node receives the peer node and is sent to the terminal node
Follow-up data bag after, be forwarded to the visit PMIP domains via the ownership PMIP domains.
The terminal node is switched to target Mobile Access Gateway, institute from the source Mobile Access Gateway in the visit PMIP domains
The mapping server or the target Mobile Access Gateway or the source Mobile Access Gateway for stating visit PMIP domains will be described
The address of target Mobile Access Gateway is notified belonging to Interworking gateway and the peer node to the ownership PMIP domains
The Mobile Access Gateway in PMIP domains.
With reference to Figure 11 terminals method that address information updates after visit domain occurs across MAG switching, step is implemented such as
Under：
Step 1101, terminal is switched to MAG4 in visit domain by MAG2.
Step 1102, in order to ensure smoothly to be communicated between peer node, MAPS2 may be by terminal positional information
(for example：The address hair of terminal new CoA and/or MAG4) give IGW1 and MAG3.
Step 1103, MAG4 may get the address of inter-domain communication mark and IGW1 and MAG3 when switching, with
After can be by terminal positional information (for example：The address hair of terminal new CoA and/or MAG4) it is sent to IGW1 and MAG3.
Step 1104, MAG2 may after the completion of the handover by terminal positional information (for example：The new CoA of terminal and/or
The address hair of MAG4) it is sent to IGW1 and MAG3.
According to actual networking deployment scenario, above step 1102,1103 and 1104 at least sends once.
The node communication system in PMIP domains internetwork roaming corresponding with the above method, including terminal node, peer node,
The visit PMIP of the support routing optimality belonging to the ownership PMIP domains of the support routing optimality belonging to terminal node, terminal node
PMIP domains belonging to domain, the peer node.The function and executive mode of each component units are identical with described in the above method,
Here is omitted.
The mapping server provided in this programme, including roaming identity processing module.
The roaming identity processing module, for affiliated visit after the mapping server is roamed as terminal node
It is that the terminal node distribution represents the terminal node in the visit PMIP domains middle position during mapping server in PMIP domains
The roaming identity of confidence breath simultaneously binds the roaming identity with the home network prefix of the terminal node, also by this roaming mark
Know and notify to the ownership PMIP domains.
The roaming identity processing module, in ownership PMIP domain of the mapping server as terminal node
During mapping server, receive and inquire about the terminal node position to mapping server using the home network prefix of the terminal node
After the request put, the roaming identity is provided to requesting party.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually it is combined.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Knowing those skilled in the art can make various corresponding changes and deformation, but these corresponding changes and deformation according to the present invention
The protection domain of appended claims of the invention should all be belonged to.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware is completed, and described program can be stored in computer-readable recording medium, such as read-only storage, disk or CD
Deng.Alternatively, all or part of step of above-described embodiment can also be realized using one or more integrated circuits.Accordingly
Ground, each module/unit in above-described embodiment can be realized in the form of hardware, it would however also be possible to employ the shape of software function module
Formula is realized.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (20)
1. a kind of node communication method in PMIP domains internetwork roaming, wherein,
It is described to visit after terminal node roams into the visit PMIP domains for supporting routing optimality from the ownership PMIP domains of support routing optimality
It is the roaming mark that the terminal node distribution represents terminal node positional information in the visit PMIP domains to visit PMIP domains
Know and the roaming identity is bound with the home network prefix of the terminal node, also notify to described this roaming identity to return
Category PMIP domains, the ownership PMIP domains are bound by the home network prefix of the terminal node and the roaming identity；
In peer node to the first transmission of data packets of the terminal node, the ownership PMIP domains are according to the terminal node
Home network prefix inquire the roaming identity, the PMIP domains belonging to the peer node are according to the roaming identity with institute
Mapping server is for purpose network element sends to the visit PMIP domains the first packet in stating visit PMIP domains；
After terminal node roams into the visit PMIP domains for supporting routing optimality from the ownership PMIP domains of support routing optimality, the end
Mobile Access Gateway belonging to end node sends agent binding update to mapping server, the mapping server directly or via
The roaming identity is sent the Mobile Access Gateway Interworking gateway belonging to the terminal node, and the Interworking gateway will
The roaming identity is notified to the ownership PMIP domains.
2. the method for claim 1, it is characterised in that
The mapping server in the visit PMIP domains binds the home network prefix of the terminal node and the roaming identity；
When the peer node is located at the visit PMIP domains, the peer node sends first process data packet to terminal node
In, the Mobile Access Gateway belonging to the peer node is looked into using the home network prefix of the terminal node to mapping server
The information of the affiliated Mobile Access Gateway of the terminal node is ask, the mapping server in the visit PMIP domains is according to the local net
Network prefix lookups realize the data is activation to peer node to the roaming identity in the visit PMIP domains.
3. the method for claim 1, it is characterised in that
When the peer node is located at the visit PMIP domains, the terminal node sends first process data packet to peer node
In, the terminal node sends first packet to the Mobile Access Gateway in the visit PMIP domains, and this Mobile Access Gateway is to institute
The mapping server for stating visit PMIP domains inquires peer node positional information, by the first packet via the peer node
Affiliated Mobile Access Gateway is sent to the peer node.
4. the method for claim 1, it is characterised in that
When the peer node is located at the PMIP domains outside the visit PMIP domains, the terminal node sends first to peer node
In process data packet, the terminal node sends first packet to the Mobile Access Gateway in the visit PMIP domains, and this movement connects
Function Access Gateway inquires about peer node positional information and receives the mapping server and sends out to the mapping server in the visit PMIP domains
After the inter-domain communication for sending is indicated, the first packet is sent the PMIP domains belonging to the peer node.
5. the method for claim 1, it is characterised in that
When the peer node is located at the ownership PMIP domains, the Mobile Access Gateway in the ownership PMIP domains receives the opposite end
After node is sent to the first packet of the terminal node, using the home network prefix of the terminal node to the ownership PMIP
The mapping server in domain knows the roaming identity when inquiring about the positional information of the terminal node, according to the roaming identity with
The first packet is sent into the visit PMIP domains mapping for purpose network element by mapping server in the visit PMIP domains
Server, in the visit PMIP domains mapping server via the Mobile Access Gateway belonging to the terminal node by the first number
Sent to the terminal node according to bag.
6. the method for claim 1, it is characterised in that
The peer node is located at other the support routing optimalities outside the ownership PMIP domains and the visit PMIP domains
During PMIP domains, it is described right that the Interworking gateway in the ownership PMIP domains is received from the Interworking gateway in the affiliated PMIP domains of the peer node
After end node is sent to the first packet of the terminal node, using the home network prefix of the terminal node to the ownership
The mapping server in PMIP domains knows the roaming identity when inquiring about the positional information of the terminal node, according to the roaming mark
Knowledge is sent into the visit PMIP domains the first packet as purpose network element with mapping server in the visit PMIP domains
Mapping server, mapping server will be described via the Mobile Access Gateway belonging to the terminal node in the visit PMIP domains
First packet is sent to the terminal node.
7. the method for claim 1, it is characterised in that
The peer node is located at the PMIP domains of the support routing optimality outside the ownership PMIP domains and the visit PMIP domains
When, the Interworking gateway in the PMIP domains belonging to the peer node receives the first data that the peer node is sent to the terminal node
Bao Hou, via the Interworking gateway in the ownership PMIP domains using the home network prefix of the terminal node to the ownership PMIP
The mapping server in domain inquires about the positional information of the terminal node and knows the roaming identity, belonging to the peer node
The first packet is sent the mapping services into the visit PMIP domains by the Interworking gateway in PMIP domains according to the roaming identity
Device, in the visit PMIP domains mapping server via the Mobile Access Gateway belonging to the terminal node by the first packet
Send to the terminal node.
8. method as claimed in claims 6 or 7, it is characterised in that
The Interworking gateway in the ownership PMIP domains inquires about the position of the terminal node to the mapping server in the ownership PMIP domains
After confidence knows the roaming identity when ceasing, the roaming identity is notified to right described in the affiliated PMIP domains of the peer node
Interworking gateway belonging to end node；Interworking gateway belonging to the peer node receives the peer node and is sent to the terminal section
After the follow-up data bag of point, the visit PMIP domains are sent directly to.
9. method as claimed in claims 6 or 7, it is characterised in that
Mobile access gateway address belonging to the terminal node is sent to opposite end by the mapping server in the visit PMIP domains
The Interworking gateway in PMIP domains.
10. the method for claim 1, it is characterised in that
When the peer node is located at the traditional PMIP domains outside the ownership PMIP domains and the visit PMIP domains, the ownership
The Interworking gateway in PMIP domains receives the peer node and is sent to institute from the local mobile anchor in the affiliated PMIP domains of the peer node
After stating the first packet of terminal node, taken to the mapping in the ownership PMIP domains using the home network prefix of the terminal node
Business device knows the roaming identity when inquiring about the positional information of the terminal node, according to the roaming identity with the visit
The first packet is sent mapping server, institute into the visit PMIP domains for purpose network element by mapping server in PMIP domains
Mapping server sends the first packet via the Mobile Access Gateway belonging to the terminal node in stating visit PMIP domains
To the terminal node.
11. methods as claimed in claim 10, it is characterised in that
The local mobile anchor in the affiliated PMIP domains of peer node is received after the peer node is sent to the terminal node
After continuous packet, the visit PMIP domains are forwarded to via the ownership PMIP domains.
12. the method for claim 1, it is characterised in that
The terminal node is switched to target Mobile Access Gateway from the source Mobile Access Gateway in the visit PMIP domains, described to visit
The mapping server or the target Mobile Access Gateway or the source Mobile Access Gateway in PMIP domains are visited by the target
The address of Mobile Access Gateway notifies the PMIP domains belonging to Interworking gateway and the peer node to the ownership PMIP domains
Mobile Access Gateway.
A kind of 13. node communication systems in PMIP domains internetwork roaming, wherein, including terminal node, peer node, terminal node
It is the visit PMIP domains of the support routing optimality belonging to the ownership PMIP domains of affiliated support routing optimality, terminal node, described right
PMIP domains belonging to end node；
The visit PMIP domains, for roaming into support routing optimality from the ownership PMIP domains of support routing optimality in terminal node
Visit PMIP domains after, be that terminal node distribution represents terminal node positional information in the visit PMIP domains
Roaming identity simultaneously binds the home network prefix of the roaming identity and the terminal node, also by this roaming identity notify to
The ownership PMIP domains；
The ownership PMIP domains, for the home network prefix of the terminal node and the roaming identity to be bound；It is additionally operable to
In the first transmission of data packets of the peer node to the terminal node, before the home network according to the terminal node
Sew and inquire the roaming identity；
PMIP domains belonging to the peer node, are additionally operable to according to the roaming identity with mapping services in the visit PMIP domains
Device is sent to the visit PMIP domains the first packet for purpose network element；
The visit PMIP domains, are additionally operable to as follows notify to the ownership PMIP domains roaming identity：
After the terminal node roams into the visit PMIP domains from the ownership PMIP domains, the movement belonging to the terminal node
Access gateway sends agent binding update to mapping server, and the mapping server is directly or via the Mobile Access Gateway
The roaming identity is sent into the Interworking gateway belonging to the terminal node, the Interworking gateway notifies the roaming identity
To the ownership PMIP domains.
14. systems as claimed in claim 13, it is characterised in that
The visit PMIP domains include mapping server；The ownership PMIP domains include mapping server；
The mapping server in the visit PMIP domains, for representing that the terminal node is visitd described for terminal node distribution
Visit in PMIP domains the roaming identity of positional information and the roaming identity is bound with the home network prefix of the terminal node；
The mapping server in the ownership PMIP domains, the roaming identity for knowing the terminal node from the visit PMIP domains
Afterwards, and by the roaming identity bound with the home network prefix of the terminal node.
15. systems as claimed in claim 14, it is characterised in that
The ownership PMIP domains include Mobile Access Gateway；
The Mobile Access Gateway in the ownership PMIP domains, the first data of the terminal node are sent to for receiving the peer node
Bao Hou, the terminal section is inquired about using the home network prefix of the terminal node to the mapping server in the ownership PMIP domains
The roaming identity is known during the positional information of point, and the first packet is sent out via the Interworking gateway in the ownership PMIP domains
Deliver to the mapping server in the visit PMIP domains.
16. systems as claimed in claim 14, it is characterised in that
The ownership PMIP domains include Interworking gateway；
The Interworking gateway in the ownership PMIP domains, the first packet of the terminal node is sent to for receiving the peer node
Afterwards, the terminal node is inquired about to the mapping server in the ownership PMIP domains using the home network prefix of the terminal node
Positional information when know the roaming identity, and the first packet is sent to the mapping services in the visit PMIP domains
Device.
17. systems as claimed in claim 16, it is characterised in that
The Interworking gateway in the ownership PMIP domains, is additionally operable to the mapping server from the ownership PMIP domains and knows the roaming mark
After knowledge, the roaming identity is notified to the visit PMIP domains.
18. systems as claimed in claim 14, it is characterised in that
The affiliated PMIP domains of peer node include Interworking gateway；
The Interworking gateway in the affiliated PMIP domains of peer node, for receiving what the peer node sent to the terminal node
After first packet, the position of the terminal node is inquired about to the ownership PMIP domains using the home network prefix of the terminal node
After confidence knows the roaming identity when ceasing, the first packet is sent to the visit PMIP according to the roaming identity
Domain.
A kind of 19. mapping servers, wherein,
The mapping server includes roaming identity processing module；
The roaming identity processing module, for the mapping server as terminal node from support routing optimality ownership
It is described when PMIP domains roam into the mapping server in the visit PMIP domains behind the visit PMIP domains for supporting routing optimality
Terminal node distribution represents the terminal node roaming identity of positional information and by the roaming in the visit PMIP domains
Identify and bound with the home network prefix of the terminal node, also notify to the ownership PMIP domains this roaming identity；
The mapping server also includes：For receiving the agent binding that the Mobile Access Gateway belonging to the terminal node sends
The module of renewal；
The roaming identity processing module, be additionally operable to directly or via the Mobile Access Gateway by the roaming identity send to
Interworking gateway belonging to the terminal node is notified to the ownership PMIP domains roaming identity with by the Interworking gateway.
A kind of 20. mapping servers, wherein,
The mapping server includes roaming identity processing module；
The roaming identity processing module, for the mapping server as the support routing optimality of terminal node ownership
During mapping server in PMIP domains, receive it is supporting the visit PMIP domains of routing optimality to send, be terminal node distribution
The roaming identity of terminal node positional information in the visit PMIP domains is represented, and is being received using the terminal node
Home network prefix inquire about the request of the end node locations to mapping server after, provide the roaming mark to requesting party
Know；
Wherein, the roaming identity is received in the following way：Ownership of the terminal node from support routing optimality
After PMIP domains roam into the visit PMIP domains for supporting routing optimality, the Mobile Access Gateway in the visit PMIP domains is to the visit
The mapping server in PMIP domains sends agent binding update, and the mapping server in the visit PMIP domains is directly or via the shifting
Dynamic access gateway sends the roaming identity to the Interworking gateway in the visit PMIP domains, and the Interworking gateway is by the roaming
Identification notification is to the ownership PMIP domains.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110301441.1A CN103037352B (en) | 2011-09-29 | 2011-09-29 | Node communication method and communication system at roam between proxy mobile internet protocol (PMIP) regions |
| PCT/CN2012/079924 WO2013044693A1 (en) | 2011-09-29 | 2012-08-10 | Communication method and communication system for node roaming between pmip domains |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110301441.1A CN103037352B (en) | 2011-09-29 | 2011-09-29 | Node communication method and communication system at roam between proxy mobile internet protocol (PMIP) regions |
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| CN103037352A (en) | 2013-04-10 |
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