CN106878973B

CN106878973B - A kind of network identity mapping method and device

Info

Publication number: CN106878973B
Application number: CN201710004018.2A
Authority: CN
Inventors: 陈山枝; 胡博; 杨洋; 王颖
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2017-01-03
Filing date: 2017-01-03
Publication date: 2019-08-30
Anticipated expiration: 2037-01-03
Also published as: CN106878973A

Abstract

This application discloses a kind of network identity mapping method and devices.This method comprises: receiving network insertion request；Network node identity is specified when networking, the network node according to network insertion request for request access distributes station location marker；MA is introduced, MA maintenance identity map table carrys out the map information of buffer network node identities mark and station location marker, and is responsible for the conversion of identity and station location marker in data transmission procedure；Introduce DMS, one side DMS maintains mapping table in domain, cached the title of network node, the identity of node, the address of the local anchor point of node, node be currently accessed anchor point address and node before access the list of anchor point address, another aspect DMS maintains mapping table between domain, the number of the DMS in local domain, reduces the time delay in data transmission procedure where node can be inquired by mapping table between domain.By MA and DMS, identity map resolving is realized, guarantee the continuity communicated in moving process.

Description

A kind of network identity mapping method and device

Technical field

This application involves field of communication technology more particularly to a kind of network identity mapping methods and device.

Background technique

With the development of mobile internet, in the communication process of existing mobile network there are still the characteristic of conventional internet, I.e. IP address had not only been used as the identity of node and high-rise binding session, but also the road of data packet is carried out as the station location marker of node By and forwarding, have dual semanteme.

For the ambiguity problem for solving IP address, industry proposes the thought of identity and position separation, to the identity of node Mark is separated with station location marker, to ensure that the independence of upper-layer protocol, can also support the spirit of network layer protocol Activity.

Identity and position separation after, the realization of communication process depend on identity map mechanism for resolving complete identity with Mapping and parsing between station location marker.

Summary of the invention

The embodiment of the present application also provides a kind of network identity mapping method and devices.

A kind of network identity mapping method provided by the embodiments of the present application, applied to the communication system comprising DMS and MA, packet It includes:

MA receives the first data packet from network node, and the purpose mark of first data packet is target network section The identity of point；The MA inquires position corresponding with the purpose mark according to the purpose mark of first data packet and marks Know；If inquiring corresponding station location marker, the purpose mark of first data packet is updated with the station location marker inquired, is sent out Send updated first data packet；If not inquiring, according to the purpose mark of first data packet by first data Packet is sent to the local MA of the target network node.

A kind of network identity mapping method of another kind provided by the embodiments of the present application, applied to the communication comprising DMS and MA System, comprising:

First DMS receives the notice request that the MA in local administrative domain is sent, wherein carrying the body of target network node The identity mark of part mark and station location marker and source network node of the target network node in the network being currently accessed Know；Wherein, the MA is obtaining institute after receiving the source network node and being sent to the data packet of the target network node State what target network node was sent after the station location marker in the visited network being switched to；

First DMS maps in the identity inquiry field according to the source network node carried in the notice request Table, if inquiring map entry in the domain of the source network mark, it is determined that the source network node is located at the first DMS Same local administrative domain；Wherein, map entry is used to store in the domain of a network node: the identity of the network node, It is accessed before the address for the MA that the address of the local MA of the network node, the network node are currently accessed and the network node The address list of MA；

The address for the MA that first DMS is currently accessed according to the source network node, the target network node is existed The station location marker in network being currently accessed is sent to the MA that the source network node is currently accessed, to trigger the source network section The MA that point is currently accessed retransmits data packet according to the station location marker.

A kind of mobile anchor point equipment provided by the embodiments of the present application, applied to the communication system comprising DMS and MA, the MA Include:

Enquiry module, for receiving the first data packet from network node, the purpose mark of first data packet For the identity of target network node；It is inquired according to the purpose mark of first data packet corresponding with the purpose mark Station location marker；

Processing module, for indicating forwarding module in the case where the enquiry module inquires corresponding station location marker The purpose mark of first data packet is updated with the station location marker inquired, sends updated first data packet；Described In the case that enquiry module does not inquire corresponding station location marker, indicate forwarding module according to the purpose mark of first data packet Know the local MA for sending first data packet to the target network node；

Forwarding module, for being handled according to the instruction of the processing module.

A kind of domain mapping server that embodiments herein provides, it is described applied to the communication system comprising DMS and MA Domain mapping server includes:

First interface module, for receiving the notice request of the transmission of the MA in local administrative domain, wherein carrying target network The station location marker and source network node of the identity of network node and the target network node in the network being currently accessed Identity；Wherein, the MA is after receiving the source network node and being sent to the data packet of the target network node, Obtaining what the target network node was sent after the station location marker in the visited network being switched to；

Enquiry module, for being mapped in the identity inquiry field according to the source network node carried in the notice request Table, if inquiring map entry in the domain of the source network mark, it is determined that the source network node is located at the first DMS Same local administrative domain；Wherein, map entry is used to store in the domain of a network node: the identity of the network node, It is accessed before the address for the MA that the address of the local MA of the network node, the network node are currently accessed and the network node The address list of MA；

The first interface module is also used to: according to the address for the MA that the source network node is currently accessed, by the mesh It marks station location marker of the network node in the network being currently accessed and is sent to the MA that the source network node is currently accessed, with triggering The MA that the source network node is currently accessed retransmits data packet according to the station location marker.

A kind of communication equipment provided by the embodiments of the present application, comprising: network interface, processor and memory；The storage Device, for storing computer program instructions；The processor is coupled to the memory, for reading the memory storage Computer program instructions, and the method for executing above-mentioned MA.

Another kind communication equipment provided by the embodiments of the present application, comprising: network interface, processor and memory；It is described to deposit Reservoir, for storing computer program instructions；The processor is coupled to the memory, deposits for reading the memory The computer program instructions of storage, and the method for executing above-mentioned DMS.

Detailed description of the invention

Fig. 1 is the network architecture schematic diagram that the embodiment of the present application is applicable in；

Fig. 2 is the data transmission stream journey schematic diagram that MN1 accesses after home network in the embodiment of the present application；

Fig. 3 is network insertion flow chart when MN1 is switched to MA2 from MA1 in the embodiment of the present application；

Data transmission stream journey schematic diagram when Fig. 4 A, Fig. 4 B are respectively MN1 access MA2 in the embodiment of the present application；

Fig. 5 is the flow diagram that MN1 switches back into home network MA1 from MA2 in the embodiment of the present application；

Fig. 6 is network insertion flow chart when MN1 is switched to MA3 from MA2 in the embodiment of the present application；

Data transmission stream journey figure when Fig. 7 A and Fig. 7 B are respectively MN1 access MA3 in the embodiment of the present application；

Fig. 8 is network insertion flow chart when MN1 is switched to MA4 from MA3 in the embodiment of the present application；

Data transmission stream journey schematic diagram when Fig. 9 A and Fig. 9 B are respectively MN1 access MA4 in the embodiment of the present application；

Data transmission stream journey schematic diagram when Figure 10 A, Figure 10 B are respectively MN1 access MA4 in the embodiment of the present application；

Figure 11 is the structural schematic diagram of mobile anchor point equipment provided by the embodiments of the present application；

Figure 12 is the structural schematic diagram of domain mapping server provided by the embodiments of the present application；

Figure 13 is the structural schematic diagram of communication equipment provided by the embodiments of the present application；

Figure 14 is the structural schematic diagram for the communication equipment that the application other embodiment provides.

Specific embodiment

The demand that the embodiment of the present invention is decoupled based on network layer identity and position proposes support identity and the position of network layer Set the network identity mapping scheme and data transmission scheme of decoupling.The network identity may include identity and station location marker, It can be IPv6 address format.Wherein, identity is specified by the home network that network node belongs to for network node, as net The identity of network node and high-rise binding session；Station location marker is distributed by the visited network of network node, the road for data By and forwarding.

In the embodiment of the present application, the distribution of the whole network map entry is stored in domain mapping server (Domain Mapping Server, abbreviation DMS) on, the network section where mobile anchor point (Mobility Anchor, abbreviation MA) is cached and updated in domain The identity map entry of point identity and station location marker, and be responsible for carrying out in data transmission procedure for the encapsulation of data packet The conversion of identity and station location marker.Identity map resolving may be implemented in the embodiment of the present application, efficiently completes identity mark Know and Mapping Resolution synchronous with the update of station location marker, effectively supports the business continuance in moving process.The embodiment of the present application The parsing mapping process of offer is transparent to network node, has good compatibility with IPv6 agreement and the address IPv6.

The embodiment of the present application is described in detail with reference to the accompanying drawing.

In the embodiment of the present application, DMS and MA are deployed in the network architecture.The quantity of DMS and the quantity of MA can be according to nets Network scale determines.For the ease of management, domain division can be carried out to network, that is, multiple domains, each domain middle part can be divided into Affix one's name at least one DMS and at least one MA.The division in domain can be carried out based on geographical location or network topology etc..MA in one domain It communicates, can not communicated between the DMS of same area with the DMS in the domain.Under normal circumstances, can be disposed in a domain DMS with And multiple MA.Further, in order to improve reliability, multiple DMS can also be disposed in a domain, are disposed in a domain multiple DMS can be used load balancing mode and cooperate, and main-standby mode cooperation can also be used.

Fig. 1 schematically illustrates the typical network architecture of one of the embodiment of the present application, which illustrates only 3 DMS and MA in domain.As shown, DMS1, DMS2 and DMS3 are respectively the domain mapping server in each domain, MA1, MA2 and MA3 are Mobile anchor point where DMS1 in domain, MA4 are the mobile anchor point where DMS2 in domain, and MA-CN is the movement where DMS3 in domain Anchor point.MA can be communicated with the DMS in the domain of place.In the domain where DMS1, MA1, MA2 and MA3 are located at difference Access network, as shown, for a network node, such as mobile node (Mobility Node, abbreviation MN) 1, The visited network that access network where the home network that access network where MA1 is the MN1, MA2 and MA3 is the MN1.

MA function distributing is in access routing layer, closer to MN.MA extends couple in router function, can be transmitted across in data Safeguard that the map entry between the identity and station location marker of relevant network node (is known as identifying in the embodiment of the present application in journey Map entry), and turned the outer envelope of data packet between identity and station location marker according to identity map entry It changes, keeps mark Uncoupled procedure transparent to network node.MA can also replace network node (such as MN) to execute the relevant signaling of mobility, Keep mobility management process transparent to network node.For example, the MA of the network is replaced should when MN is moved to an access network MN sends Address requests signaling, and the MA and local MA which accesses receive the map updating signaling of DMS, to make this The MA and local MA of MA and last access that MN is currently accessed safeguard the mark between the identity of the MN and station location marker Map entry is known, so that the identity that data packet head encapsulates is converted into station location marker etc. when data are transmitted.In deployment, Optionally, the station location marker for MN distribution is safeguarded that no need to send give MN by MA.

MA safeguards that the data structure of identity map table as shown in Table 1, mark can be used in safeguarded identity map entry Mapping table is configurable on MA.Identity and the net in the identity map entry of one network node including the network node The station location marker of network node, (ID of network node can be network node by the title that further may also include network node or ID Number etc. can be identified for that the information of network node).By taking network node is MN as an example, including in the identity map entry of a MN should The identity of MN and the station location marker of the MN.

The data structure of the identity map table of table 1:MA maintenance

Nodename	Node identities mark	Node location mark

When MN accesses home network, the MA of home network creates the identity map entry of the MN in identity map table； When MN carries out network switching (for example it is switched to visited network from home network, or be switched to home network from visited network, Or switch between different visited network), the identity map entry of the MN will be updated.

DMS is mainly used for providing mark query service for the MA in the domain of place.For this purpose, DMS maintenance has the domain of network node Interior map entry includes identity and the network node institute of the network node in map entry in the domain of one network node The information (such as address of MA) of the MA of access further may also include the title or ID of the network node.Specifically, one May include in map entry in the domain of a network node the identity of the network node, the network node local MA ground The address of the MA of the address for the MA that location, the network node are currently accessed and network node last time access.Network node Map entry can be stored as the data structure of mapping table in domain as shown in Table 2.Mapping table is configurable on DMS in domain.

The data structure of mapping table in the domain of table 2:DMS maintenance

When network node accesses home network, DMS is the specified identity of the network node, and in domain in mapping table Create map entry in the domain of the network node；When MN carries out network switching (for example it is switched to visited network from home network, Perhaps home network is switched to from visited network or switch between different visited network), DMS is by network identity pond (vLoc pool) initiate request be the network node distribute station location marker, and in more neofield in mapping table the network node domain Interior map entry, and indicate that the MA of network node last time access and the local MA of the network node update in identity map table The identity map entry of the network node.

Further, DMS can also safeguard mapping table between domain, and mapping table is configurable on DMS between domain.DMS maps between domain The content of table storage can mainly include [DMS-ID belongs to the section of the identity in the domain DMS], therefore according to network node Mapping table can determine the DMS for storing the identity between identity inquiry field, it can find the local of network node DMS。

Identity in the embodiment of the present invention can uniquely be specified when network node networks, not reused, network section Point has unique identity in the whole network；In home network, the station location marker of network node is identical as identity.Work as net When network node motion is to visited network, network identity pond is based on by visited network and distributes station location marker.The position of one network node It sets mark to change with the network node in the change of network access point, the station location marker of a network node global can route.

As described above, the identity of network node can preassign, that is, identity mark can be specified in advance for network node Know, for example, can in advance bind the identification information for being used for unique identification network node and an identity.It is hand with network node For machine, when the mobile phone carries out operator's network registration, client identification module (Subscriber is being provided Identification Module, abbreviation SIM) card when, can pre-allocate an identity (IPv6 address format), and by the body Part mark and SIM card card number (SIM card card number the is used for unique identification SIM card) binding.It is again that fixed-line telephone is with network node Example, when providing fixed telephone number, can pre-allocate an identity when the fixed-line telephone carries out operator's network registration (IPv6 address format), and the identity and the telephone number are bound.When network node accesses home network, DMS will The identity specified for the network node is sent to the network node.Identity is distributed with the mode based on network identity pond It compares, the embodiment of the present invention can guarantee the stability of the identity of the network node.

It, can be in the embodiment of the present invention in order to distinguish the type (as identity or station location marker) of network identity Network identity type information domain is set in network identity, and it is identity that the network identity is distinguished by the different values of the information field Mark or station location marker.

By taking network identity is IPv6 address format as an example, IPv6 address size is 128 bits, in which:

" access address prefix " occupies n-bit, by higher level's regional internet registry structure (Regional Internet Registry, abbreviation RIR) RIR or Internet provider (Internet Service Provider, abbreviation ISP) distribution；

" route prefix address block " occupies m bit, and operator can be according to itself deployment planning, load state, to m bit Route prefix address block carries out reasonable coding and work of putting on record；

" interface identifier " is used to identify the special interface in network, occupies 64 bits；

" user subnet " is the identifier of subnet in website, occupies the bit of volume residual.

In some embodiments of the present application, setting network type identifies letter in " the route prefix address block " of m bit Cease domain, which can occupy continuous or discontinuous T bit (T is the integer more than or equal to 0).Not according to the information field The address IPv6 is identified with value as identity or station location marker.Table 3 shows a kind of network identity format.

Table 3: network identity format

Further, the 2 of network identification information domain^TA value is at least divided into first part and second part, and first Partial value is for the instruction as identity, and the value of second part is for the instruction as network identity.Described The value quantity of a part and the value quantity of the second part, can be arranged according to setting ratio.Operator can be according to certainly Body loading condition (such as mobile node quantity and stationary nodes quantity), determine in the value of the information field, how many Value is used to indicate identity, how many value is used to indicate station location marker.

By taking T=2 as an example, " network identity type " information field of 2 bit lengths shares 4 kinds of values (binary form): 00, 01,10,11.In certain shopping centres, mobile node is opposite more with stationary nodes quantity, and the station location marker of consumption is relative to body Part mark is more, the address that the value of the information field is 00 can be used as identity in such cases, by the information field The address that value is 01,10,11 is used as station location marker；And in residential quarter, stationary nodes are relatively more, in such cases, can be with The address for being 00,01,10 using the value of the information field is as identity, and the address for being 11 using the value of the information field is as position Set mark.Specific distribution can be as shown in table 4.

Table 4: " network identity type " information field value distribution condition

As an example, as shown in table 5, the network identity of IPv6 address format includes following information field:

" access address prefix " information field of 24 bit lengths, for before carrying and distributing to the access address that operator uses Sew；

" addressing identifier " information field of 9 bit lengths, for carrying access province mark, access style mark etc., by Operator is customized；Wherein, access style can include: fixed network dynamic access, the access of fixed network static state, mobile access, public service Operation platform access etc.；

" district coding " information field of 8 bit lengths, for carrying district coding；

" network identity type " information field of 2 bit lengths, for being marked by different values to identity and position Knowledge distinguishes；Further, it can also retain some values and be not used in differentiation identity and station location marker, it in this way can be according to fortune The actual demand for seeking quotient's deployment scenario, the ratio of identity and station location marker is adjusted using the value of reservation, or expanded Exhibition distribution；

" user subnet " information field of 21 bit lengths, for carrying subnet space identifier；

" interface identifier " information field of 64 bit lengths is used for bearing interface identifier.

Wherein, " addressing identifier " information field, " district coding " information field and " network identity type " information field, is constituted " route prefix address block " in the address IPv6.

Table 5: the format of network identity

It should be noted that the structure of the above network identity is only a kind of example, wherein " network identity type " information field Length and position, be not limited to the exemplary description.

In data transmission procedure, MA carries out the conversion of packet rs destination mark and turning for data packet according to identity map table Hair, and triggering DMS notify station location marker of the target network node of data packet in present access network to give the data packet The MA that is currently accessed of source network node, so that the MA that source network node is currently accessed is connect using target network node currently Enter the station location marker in network to Reseal data packet and send.

In order to be more clearly understood that above-described embodiment of the application, below by taking framework shown in FIG. 1 as an example, to network node Access procedure and data transmission procedure be described.It should be understood that network node access procedure described below and number According to the realization principle of transmission process, it is equally applicable to the other similar network architecture.

In the embodiment of the present application, due to the identity of MN be it is specified, can be in advance in the identity map table of MA For MN configuration identifier map entry, extended meeting is updated according to the access situation of MN after the identity map entry；It can also be in advance Map entry in domain is configured for MN in mapping table in the domain of DMS, map entry is subsequent in the domain also can be according to the access feelings of MN Condition is updated.Wherein, in advance in the identity map table of MA in MN configuration identifier map entry, and in advance DMS's It is configured in domain in map entry in mapping table for MN in domain, the identity of MN is identical as station location marker.

Below by taking MN1 as an example, table 6 shows MN1 in the identity map table on the local MA (MA1) of the MN1 in advance Identity map entry, table 7 show in advance in the domain on the DMS1 that the local MA of MN1 is belonged in mapping table MN1 domain Interior map entry.

The identity map table of table 6:MA1

In table 6, Name-MN1 be MN1 nodename, HID-MN1 be MN1 identity, the identity of MN1 and Station location marker is identical, and the identity of MN1 has both the function of station location marker.

Mapping table in the domain of table 7:DMS1

In table 7, Name-MN1 is the nodename of MN1, and HID-MN1 is the identity of MN1, the local MA of MN1 and is worked as The address of the MA of preceding access is IP-MA1, and the address list of the MA accessed before MN1 is sky.

When MN1 accesses local MA1 for the first time, MN1 sends access request message to MA1.MA1 receives the access request and disappears After breath, judge whether oneself is the local MA of the MN1, if it is, can further judge to inquire the MN1 in identity map table Whether identity and station location marker are identical.In this example, since MN1 is to access local MA for the first time, the mark on MA1 is reflected The identity of MN1 is identical with station location marker in firing table, and MA1 can not make other processing in such cases.In the step, MA1 can According to the identity of MN judge MA1 whether be the MN local MA.Specifically, if the identity of the MN is in the address of MA1 In range (such as in the network segment where MA1), then it can determine whether that MA1 is the local MA of the MN.

It referring to fig. 2, is the flow diagram provided by the embodiments of the present application that data are sent to the MN being located in home network. The process be although by MN1 access home network for describe, but the access process be applicable to other network structures or The data transmission procedure of other kinds of network node.As shown, the process may include following steps:

Step 201:CN1 delivers a packet to the MA-CN that the CN1 is currently accessed, the format of the data packet such as 8 institute of table Show.

The format for the data packet that table 8:CN1 is sent

HID-CN1

HID-MN1

Data

Wherein, the source of the data packet is identified as the identity HID-CN1 of CN (CN indicates Correspondent Node), the data packet The identity HID-MN1, Data that purpose mark is MN1 are the load of the data packet.

After step 202:MA-CN receives data packet, routed a data packet to according to the destination address HID-MN1 of data packet The local MA1 of MN1.

After step 203:MA1 receives data packet, identity map table is inquired according to the purpose mark HID-MN1 of the data packet, Obtain identity map entry<Name-MN1 of MN1, HID-MN1, HID-MN1>, due to the identity mark in the identity map entry Knowledge is identical with station location marker, therefore MA1 judges that MN1 is currently located at home network, therefore sends the packet to MN1.

Referring to Fig. 3, the flow diagram of visited network is switched to from home network for MN provided by the embodiments of the present application.Figure Although 3 are described so that MN1 accesses visited network as an example, which is applicable to other network architectures or other classes The process of the network node access visited network of type.

After MN1 accesses home network by MA1, visited network is switched to by home network, and access and visit by MA2 Network.MA1, MA2 and DMS1 belong to same domain.As shown, the process may include following steps:

Step 301:MN1 sends access request message to MA2, to request access visited network.In the access request message Carry the identity HID-MN1 of MN1.

After step 302:MA2 receives the access request message, judging MA2 not is the home network of MN1, therefore to local The DMS1 of management domain sends Location Request message (location request message), is that MN1 is distributed in visited network with request In station location marker.It include the identity HID-MN1 of MN1 in the Location Request message.

After step 303:DMS1 receives Location Request message, the position in visited network is distributed for MN1 Mark, DMS1 return to Location Response message (position response message) to MA2, wherein carry promising MN1 distribution Station location marker vLoc-MA2-MN1 in visited network.Further, DMS1 updates map entry in the domain of MN1.

In the step, after DMS1 receives Location Request message, sent to network identity pond (vLoc pool) Location Request message is that MN1 distributes network identity with request wherein carrying the identity of MN1；vLoc pool It is that MN1 distributes station location marker vLoc-MA2-MN1, and passes through Location that the not used address IPv6 is chosen from mark pond Response message will distribute station location marker vLoc-MA2-MN1 for MN1 and be sent to MA2.VLoc pool is for carrying out position Mark distribution and management service module, two entities can be belonged to DMS, can also be deployed in it is same physically.

The relevant map entry of MN1 in mapping table in DMS1 more neofield are as follows: < Name-MN1, HID-MN1, IP-MA1, IP- MA2,IP-MA1>.Wherein, the address of the local MA of MN1 is IP-MA1, and the address for the MA that MN1 is currently accessed is IP-MA2, MN1 The address of the MA of last time access is IP-MA1.Mapping table can be as shown in table 9 in updated domain.

Mapping table in the domain of table 9:DMS1

After step 304:MA2 receives Location Response message, according to the station location marker of the MN1 wherein carried The identity map entry of MN1 is updated, and further can return to (the position Location Update Acknowledgement to DMS1 It sets and updates confirmation message).The identity map entry of updated MN1 are as follows:<Name-MN1, HID-MN1, vLoc-MA2-MN1>. Updated identity map table can be as shown in table 10.

The identity map table of table 10:MA2

Step 305:DMS1 sends Location Update to the local MA of MN1 and the MA of last access Notification message, wherein carrying the station location marker vLoc- of the identity HID-MN1 and MN1 of MN1 in MA2 MA2-MN1, so that the local MA of MN1 and the MA of last access update the identity map entry of MN1.

In this scene, since the local MA of MN1 and the MA of last access are MA1, DMS1 need to only be sent to MA1 Location Update Notification message.If the local MA of MN and the MA of last access be not identical, need point Location Update Notification message is not sent to the MA of the local MA of MN and last access, to notify respectively The local MA of MN and the MA of last access update identity map table.

After step 306:MA1 receives Location Update Notification message, according to the MN1's wherein carried Station location marker updates the identity map entry of MN1, and further can return to Location Update to DMS1 Acknowledgement (location updating confirmation message).The identity map entry of updated MN1 are as follows: < Name-MN1, HID- MN1,vLoc-MA2-MN1>.Updated identity map table can be as shown in table 12.

The identity map table of table 11:MA1

In above-mentioned process, the not stringent timing requirements of part steps, for example, the sequence of step 304 and step 305 can be with Exchange.

A and Fig. 4 B referring to fig. 4, for the process provided by the embodiments of the present application for sending data to the MN being located in visited network Schematic diagram.Although the process is to describe by taking MN1 as an example, but the access process is applicable to other network structures or other classes The data transmission procedure of the network node of type.As shown, the process may include following steps:

Step 401:CN1 delivers a packet to the MA-CN that CN1 is currently accessed, and the format of the data packet is as shown in table 12.

The format for the data packet that table 12:CN1 is sent

HID-CN1

HID-MN1

Data

Wherein, the source of the data packet is identified as the identity HID-CN1 of CN, and the purpose mark of the data packet is MN1's Identity HID-MN1, Data are the load of the data packet.

After step 402:MA-CN receives data packet, routed a data packet to according to the destination address HID-MN1 of data packet The local MA1 of MN1.

After step 403a:MA1 receives data packet, identity map table is inquired according to the purpose mark HID-MN1 of the data packet, Obtain identity map entry<Name-MN1 of MN1, HID-MN1, vLoc-MA2-MN1>, due to the body in the identity map entry Part mark is different with station location marker, therefore MA1 judges that MN1 has been moved out home network, therefore sends Notification to DMS1 Request message, wherein carrying the identity HID-MN1 of MN1 and the identity of station location marker vLoc-MA2-MN1 and CN1 HID-CN1 is identified, notifies station location marker of the MN1 in the network being currently accessed to the access mobile anchor of CN1 to trigger DMS Point MA-CN.

After step 404a:DMS1 receives the Notification Request message of MA1 transmission, taken according in the message Mapping table in the identity HID-CN1 inquiry field of the CN1 of band.Since there is no in the domain of CN1 in mapping table in the domain of DMS1 Map entry, therefore DMS1 obtains the home network DMS3 of CN1 according to mapping table between HID-CN1 inquiry field；DMS1 is sent out to DMS3 Notification Request message is sent, the identity mark of the identity HID-CN1 and MN1 of CN1 can be carried in the message Know the HID-MN1 and station location marker vLoc-MA2-MN1 in the network being currently accessed.

Further, it after DMS3 receives the Notification Request message that DMS1 is sent, can be returned to DMS1 Notification Response message (step 404b).Further, DMS1 receives the Notification of MA1 transmission After Request message Notification Response message (step 403b) can be returned to MA1.

After step 405a:DMS3 receives the Notification Request message of DMS1 transmission, according in the message Mapping table in the identity HID-CN1 inquiry field of the CN1 of carrying, obtains map entry < Name-CN1, HID- in the domain of CN1 CN1, IP-MA-CN1, IP-MA-CN1, --- >, wherein the address of the local MA of CN1 and the address for the MA being currently accessed are IP-MA-CN1；DMS3 currently connects according to the address for the MA-CN that CN1 is currently accessed in the map entry of the CN1 inquired to CN1 The MA-CN entered sends Location Update Notification message, wherein the identity HID-MN1 of MN1 can be carried With the station location marker vLoc-MA2-MN1 of MN1.

Further, MA-CN can be to after receiving the Location Update Notification message of DMS3 transmission DMS3 returns to Location Update Acknowledgement message (step 405b).

After step 406:MA-CN receives the Location Update Notification message of DMS3 transmission, according to this The station location marker vLoc-MA2-MN1 of the MN1 carried in message replaces the destination address for the data packet that destination address is HID-MN1 It is changed to station location marker vLoc-MA2-MN1 of the MN1 in the network being currently accessed, and sends the updated data packet of purpose mark.

Further, it after MA-CN receives the Location Update Notification message that DMS3 is sent, can cache Mapping relations between the identity HID-MN1 and station location marker vLoc-MA2-MN1 of MN1.

Step 407: data packet is routed to MA2, after MA2 receives data packet, according to the purpose mark vLoc-MA2- of data packet MN1 inquires identity map table, obtains corresponding identity HID-MN1, and update the data packet using the HID-MN1 inquired Purpose mark, then updated data packet is transmitted to MN1.

It should be noted that since MA-CN receives the Location Update Notification message of DMS3 transmission Afterwards, the mapping relations between the identity HID-MN1 and station location marker vLoc-MA2-MN1 of MN1 have been cached, therefore subsequent MA-CN is received again be sent to the data packet of MN1 after (structure of data packet is as shown in table 12), then can be according to the mesh of the data packet Mapping relations between the identity HID-MN1 and station location marker vLoc-MA2-MN1 of mark mark inquiry MN1, and use is looked into The station location marker vLoc-MA2-MN1 ask replaces the target identification of the data packet, and sends updated data packet, the data Packet can be routed directly to MA2, and be sent to MN1 (i.e. step shown in dotted line in Fig. 4 B can be omitted) as MA2.

It should also be noted that, the MA that is currently accessed of source network node and target network node in data packet is belonged to together In the case where one domain, the DMS in the domain is receiving what recipient's node (i.e. the target network node of data packet) was accessed After the Notification Request message that MA is sent, which can be according to sender's node (the i.e. data carried in the message The source network node of packet) identity inquire map entry in the domain of sender's node, thus according to institute in the entry The MA that the sending node indicated is currently accessed, by the position of the recipient's node carried in Notification Request message It sets mark and the MA that sender's node is currently accessed is sent to by Location Update Notification message, so that Data packet is transmitted to recipient's node according to the station location marker by the MA.

Referring to Fig. 5, when MN1 switches back into home network MA1 from visited network MA2, which may include following steps:

Step 501:MN1 sends access request message to MA1.The identity of MN1 is carried in the access request message HID-MN1。

After step 502:MA1 receives the access request message, judge that MA1 is the home network of MN1, further inquiry mark Know the identity of MN1 and station location marker in mapping table, due to the identity and station location marker difference of the MN1 inquired, then Show that the MN1 is to switch back into home network from visited network.MA1 updates the identity map entry of MN1, updated MN1's In identity map entry, the identity of MN1 is identical with station location marker.

(location updating is logical to the DMS1 of local administrative domain transmission Location Update Notification message by MA1 Know message), to indicate map entry in DMS1 more neofield.Include in the Location Update Notification message The identity HID-MN1 of MN1.

After step 503:DMS1 receives Location Update Notification message, updates in the domain of MN1 and reflect Entry is penetrated, mapping table can be as shown in table 13 in updated domain:

Mapping table in the domain of table 13:DMS1

DMS1 sends Location Update Notification message to the MN2 of access before MN1, to indicate to update The identity map entry of MN1.

After MA2 receives Location Update Notification message, the identity map entry of MN1 is updated, and can Further Location Update Acknowledgement (location updating confirmation message) is returned to DMS1.Updated MN1 Identity map entry in, the identity of MN1 is identical with station location marker.

Referring to Fig. 6, the flow diagram of MA3 is moved to from the MA2 being currently accessed for MN1.As shown, the process can wrap Include following steps:

Step 601:MN1 sends access request message to MA3, to request access visited network.In the access request message Carry the identity HID-MN1 of MN1.

After step 602:MA3 receives the access request message, judging MA3 not is the home network of MN1, therefore to local The DMS1 of management domain sends Location Request message, is that MN1 distributes the station location marker in visited network to request.It should It include the identity HID-MN1 of MN1 in Location Request message.

After step 603:DMS1 receives Location Request message, the position in visited network is distributed for MN1 Mark, DMS1 return to Location Response message to MA3, wherein carrying the position in visited network of promising MN1 distribution Set mark vLoc-MA3-MN1.Further, DMS1 updates map entry in the domain of MN1.

In the step, after DMS1 receives Location Request message, sent to network identity pond (vLoc pool) Location Request message is that MN1 distributes network identity with request wherein carrying the identity of MN1；vLoc pool It is that MN1 distributes station location marker vLoc-MA3-MN1, and passes through Location that the not used address IPv6 is chosen from mark pond Response message will distribute station location marker vLoc-MA3-MN1 for MN1 and be sent to MA3.

The relevant map entry of MN1 in mapping table in DMS1 more neofield are as follows: < Name-MN1, HID-MN1, IP-MA1, IP- MA3,IP-MA2>.Wherein, the address of the local MA of MN1 is IP-MA1, and the address for the MA that MN1 is currently accessed is IP-MA3, MN1 The address of the MA accessed before may include the address ip-MA2 of the MA2 of last access, can also further comprise connecing before this Address ip-the MA1 of the MA1 entered.Mapping table can be as shown in table 14 in updated domain.

Mapping table in the domain of table 14:DMS1

After step 604:MA3 receives Location Response message, according to the station location marker of the MN1 wherein carried The identity map entry of MN1 is updated, and further can return to Location Update Acknowledgement message to DMS1 (location updating confirmation message).The identity map entry of updated MN1 are as follows: < Name-MN1, HID-MN1, vLoc-MA3-MN1 >.Updated identity map table can be as shown in Table 15.

The identity map table of table 15:MA3

Step 605:DMS1 sends Location Update to the local MA1 of MN1 and the MA2 of last access respectively Notification message, wherein carrying the station location marker vLoc- of the identity HID-MN1 and MN1 of MN1 in MA3 MA3-MN1, so that the local MA1 of MN1 and the MA2 of last access update the identity map entry of MN1.

After step 606:MA1 and MA2 receive Location Update Notification message, according to what is wherein carried The station location marker of MN1 updates the identity map entry of MN1, and further can return to Location Update to DMS1 Acknowledgement message (location updating confirmation message).The identity map entry of updated MN1 are as follows: < Name-MN1, HID-MN1,vLoc-MA3-MN1>.Updated identity map table can be as shown in table 16.

The identity map table of table 16:MA1 and MA2

In above-mentioned process, the not stringent timing requirements of part steps, for example, the sequence of step 604 and step 605 can be with Exchange.

Referring to Fig. 7 A and Fig. 7 B, for the process provided by the embodiments of the present application for sending data to the MN being located in visited network Schematic diagram.Although the process is to describe by taking MN1 as an example, but the access process is applicable to other network structures or other classes The data transmission procedure of the network node of type.As shown, after MN1 is switched to MA3 from MA2, data transmission stream journey may include as Lower step:

Step 701:CN1 delivers a packet to the MA-CN that CN1 is currently accessed, and the format of the data packet is as shown in table 17.

The format for the data packet that table 17:CN1 is sent

HID-CN1

HID-MN1

Data

After step 702:MA-CN receives data packet, according to what is cached before the destination address HID-MN1 of data packet inquiry The purpose mark of data packet is replaced with vLoc-MA2- with the station location marker vLoc-MA2-MN1 inquired by the station location marker of MN1 MN1 routes a data packet to the MA2 that the MN1 last time accesses.

Step 703a:MA2 is cached after receiving data packet, and waits for a period of time (time span is settable).When The Location Update Nodification message that DMS1 is sent to MA2 is received within this time (wherein to carry The identity HID-MN1 and station location marker vLoc-MA3-MN1 of MN1), then MA2 is reflected according to the mark of information updating MN1 Entry is penetrated, sends Nodification Request message (notification request message) to DMS1, wherein carrying the identity of MN1 The identity HID-CN1 of HID-MN1 and station location marker vLoc-MA3-MN1 and CN1, to trigger DMS for MN1 current Station location marker in the network of access is notified to the access mobile anchor point MA-CN of CN1.

After step 704a:DMS1 receives the Notification Request message of MA2 transmission, taken according in the message Mapping table in the identity HID-CN1 inquiry field of the CN1 of band.Since there is no in the domain of CN1 in mapping table in the domain of DMS1 Map entry, therefore DMS1 obtains the local administrative domain DMS3 of CN1 according to mapping table between HID-CN1 inquiry field；DMS1 is to DMS3 Notification Request message is sent, the identity of the identity HID-CN1 and MN1 of CN1 can be carried in the message Identify the HID-MN1 and station location marker vLoc-MA3-MN1 in the network being currently accessed.

Further, it after DMS3 receives the Notification Request message that DMS1 is sent, can be returned to DMS1 Notification Response message (step 704b).Further, DMS1 receives the Notification of MA1 transmission After Request message Notification Response message (step 703b) can be returned to MA1.

After step 705a:DMS3 receives the Notification Request message of DMS1 transmission, according in the message Mapping table in the identity HID-CN1 inquiry field of the CN1 of carrying, obtains map entry < Name-CN1, HID- in the domain of CN1 CN1, IP-MA-CN1, IP-MA-CN1, --- >, wherein the address of the local MA of CN1 and the address for the MA being currently accessed are IP-MA-CN1；DMS3 currently connects according to the address for the MA-CN that CN1 is currently accessed in the map entry of the CN1 inquired to CN1 The MA-CN entered sends Location Update Notification message, wherein the identity HID-MN1 of MN1 can be carried With the station location marker vLoc-MA3-MN1 of MN1.

Further, MA-CN can be to after receiving the Location Update Notification message of DMS3 transmission DMS3 returns to Location Update Acknowledgement message (step 705b).

After step 706:MA-CN receives the Location Update Notification message of DMS3 transmission, according to this The station location marker vLoc-MA3-MN1 of the MN1 carried in message replaces the destination address for the data packet that destination address is HID-MN1 It is changed to station location marker vLoc-MA3-MN1 of the MN1 in the network being currently accessed, and sends the updated data packet of purpose mark.

Further, it after MA-CN receives the Location Update Notification message that DMS3 is sent, can cache Mapping relations between the identity HID-MN1 and station location marker vLoc-MA3-MN1 of MN1.

Step 707: data packet is routed to MA3, after MA3 receives data packet, according to the purpose mark vLoc-MA3- of data packet MN1 inquires identity map table, obtains corresponding identity HID-MN1, and update the data packet using the HID-MN1 inquired Purpose mark, then updated data packet is transmitted to MN1.

It should be noted that since MA-CN has cached the identity HID-MN1 and station location marker vLoc-MA3- of MN1 Mapping relations between MN1, therefore subsequent MA-CN receives after being sent to the data packet of MN1 (the structure of data packet such as 17 institute of table again Show), then the identity HID-MN1 and station location marker vLoc-MA3- of MN1 can be inquired according to the target identification of the data packet Mapping relations between MN1, and the target identification of the data packet is replaced using the station location marker vLoc-MA3-MN1 that inquires, and Updated data packet is sent, which can be routed directly to MA3, and be sent to MN1 (i.e. shown in dotted line in Fig. 7 B as MA3 The step of can be omitted).

It should also be noted that, the MA that is currently accessed of source network node and target network node in data packet is belonged to together In the case where one domain, DMS after receiving the Notification Request message that the MA that sending node accessed is sent, The DMS, which can be inquired according to the identity of the sender's node carried in the message in the domain of sender's node, maps item Mesh, thus according to the MA that the sending node indicated in the entry is currently accessed, by Notification Request message The station location marker of recipient's node of middle carrying is sent to the MA that sender's node is currently accessed.

Network insertion flow diagram referring to Fig. 8, when being MN provided by the embodiments of the present application cross-domain mobile.Although Fig. 8 It is to be described by taking MN1 as an example, but the access process is applicable to other network architectures or the access of other kinds of network node The process of visited network.

When the access network where the access Network Mobility to MA4 where MN1 from MA3, visit net is accessed by MA4 Network.MA3 belongs to different domains from MA4.As shown, the process may include following steps:

Step 801:MN1 sends access request message to MA4, to request access visited network.In the access request message Carry the identity HID-MN1 of MN1.

After step 802:MA4 receives the access request message, judging MA4 not is the home network of MN1, therefore to local The DMS2 of management domain sends Location Request message, is that MN1 distributes the station location marker in visited network to request.It should It include the identity HID-MN1 of MN1 in Location Request message.

After step 803:DMS2 receives Location Request message, the position in visited network is distributed for MN1 Mark, DMS2 return to Location Response message to MA4, wherein carrying the position in visited network of promising MN1 distribution Set mark vLoc-MA4-MN1.Further, DMS2 creates map entry in the domain of MN1.

In the step, after DMS2 receives Location Request message, sent to network identity pond (vLoc pool) Location Request message is that MN1 distributes network identity with request wherein carrying the identity of MN1；vLoc pool It is that MN1 distributes station location marker vLoc-MA4-MN1, and passes through Location that the not used address IPv6 is chosen from mark pond Response message will distribute station location marker vLoc-MA4-MN1 for MN1 and be sent to MA4.

DMS2 creates the relevant mapping item of MN1, and mapping table can be as shown in table 18 in domain at this time.Wherein, the local of MN1 The address of MA1 is sky.

Mapping table in the domain of table 18:DMS2

After step 804:MA4 receives Location Response message, according to the station location marker of the MN1 wherein carried The identity map entry of MN1 is created, and further can return to Location Update Acknowledgement to DMS2 and disappear Breath.Identity map table at this time can be as shown in table 19.

The identity map table of table 19:MA4

Step 805: due in the domain of DMS2 in mapping table about in the map entry of MN1 not comprising MN1 local MA with And the MA (because MN1 does not belong to the domain where DMS2) of last access, DMS2 are according to the identity inquiry field of MN1 Between mapping table, obtain the address of the local DMS1 of MN1, to DMS1 send Location Update Notification message, Wherein carry the ground of the station location marker vLoc-MA4-MN1 and MA4 of the identity HID-MN1 and MN1 of MN1 in MA4 Location IP-MA4.

After step 806:DMS1 receives the Location Update Notification message of DMS2 transmission, disappeared according to this Cease in more neofield in mapping table map entry (as shown in table 20) in the domain of MN1；DMS1 passes through Location Update Notification message, the MA3 for notifying local MA1 and the MN1 last time of MN1 to access update the identity map table of MN1, should It may include the identity HID-MN1 and station location marker vLoc- of MN1 in Location Update Notification message MA4-MN1.Further, DMS1 returns to Location Update Acknowledgement message to DMS2.

Mapping table in the domain of table 20:DMS1

After step 807:MA1 and MA3 receive Location Update Notification message, according to what is wherein carried The station location marker of MN1 updates the identity map entry of MN1, and further can return to Location Update to DMS1 Acknowledgement message (location updating confirmation message).The identity map entry of updated MN1 are as follows: < Name-MN1, HID-MN1,vLoc-MA4-MN1>.Updated identity map table can be as shown in table 21.The identity map entry of MN1 on MA2 It can remain unchanged.

The identity map table of table 21:MA1 and MA3

In above-mentioned process, the not stringent timing requirements of part steps.

Referring to Fig. 9 A and Fig. 9 B, for the process provided by the embodiments of the present application for sending data to the MN being located in visited network Schematic diagram.Although the process is to describe by taking MN1 as an example, but the access process is applicable to other network structures or other classes The data transmission procedure of the network node of type.As shown, after MN1 is switched to MA4 from MA3, data transmission stream journey may include as Lower step:

Step 901:CN1 delivers a packet to the MA-CN that CN1 is currently accessed, and the format of the data packet is as shown in table 22.

The format for the data packet that table 22:CN1 is sent

HID-CN1

HID-MN1

Data

After step 902:MA-CN receives data packet, according to what is cached before the destination address HID-MN1 of data packet inquiry The station location marker of MN1 is (referring to the step 706) in Fig. 7 A and Fig. 7 B, with the station location marker vLoc-MA3-MN1 inquired by data The purpose mark of packet replaces with vLoc-MA3-MN1, routes a data packet to the MA3 that the MN1 last time accesses.

Step 903a:MA3 is cached after receiving data packet, and waits for a period of time (time span is settable).When The Location Update Nodification message that DMS1 is sent to MA3 is received within this time (wherein to carry The identity HID-MN1 and station location marker vLoc-MA4-MN1 of MN1), then MA3 is reflected according to the mark of information updating MN1 Entry is penetrated, sends Nodification Request message (notification request message) to DMS1, wherein carrying the identity of MN1 The identity HID-CN1 of HID-MN1 and station location marker vLoc-MA4-MN1 and CN1, to trigger DMS for MN1 current Station location marker in the network of access is notified to the access mobile anchor point MA-CN of CN1.

After step 904a:DMS1 receives the Notification Request message of MA3 transmission, taken according in the message Mapping table in the identity HID-CN1 inquiry field of the CN1 of band.Since there is no in the domain of CN1 in mapping table in the domain of DMS1 Map entry, therefore DMS1 obtains the local administrative domain DMS3 of CN1 according to mapping table between HID-CN1 inquiry field；DMS1 is to DMS3 Notification Request message is sent, the identity of the identity HID-CN1 and MN1 of CN1 can be carried in the message Identify the HID-MN1 and station location marker vLoc-MA4-MN1 in the network being currently accessed.

Further, DMS1 can be returned after receiving the Notification Request message that MA3 is sent to MA3 Notification Response message (step 903b).Further, DMS3 receives the Notification of DMS1 transmission After Request message, Notification Response message (step 904b) can be returned to DMS1.

After step 905a:DMS3 receives the Notification Request message of DMS1 transmission, according in the message Mapping table in the identity HID-CN1 inquiry field of the CN1 of carrying, obtains map entry < Name-CN1, HID- in the domain of CN1 CN1, IP-MA-CN1, IP-MA-CN1, --- >, wherein the address of the local MA of CN1 and the address for the MA being currently accessed are IP-MA-CN1；DMS3 currently connects according to the address for the MA-CN that CN1 is currently accessed in the map entry of the CN1 inquired to CN1 The MA-CN entered sends Location Update Notification message, wherein the identity HID-MN1 of MN1 can be carried With the station location marker vLoc-MA4-MN1 of MN1.

Further, MA-CN can be to after receiving the Location Update Notification message of DMS3 transmission DMS3 returns to Location Update Acknowledgement message (step 905b).

After step 906:MA-CN receives the Location Update Notification message of DMS3 transmission, according to this The station location marker vLoc-MA4-MN1 of the MN1 carried in message replaces the destination address for the data packet that destination address is HID-MN1 It is changed to station location marker vLoc-MA4-MN1 of the MN1 in the network being currently accessed, and sends the updated data packet of purpose mark.

Further, it after MA-CN receives the Location Update Notification message that DMS3 is sent, can cache Mapping relations between the identity HID-MN1 and station location marker vLoc-MA4-MN1 of MN1.

Step 907: data packet is routed to MA4, after MA4 receives data packet, according to the purpose mark vLoc-MA4- of data packet MN1 inquires identity map table, obtains corresponding identity HID-MN1, and update the data packet using the HID-MN1 inquired Purpose mark, then updated data packet is transmitted to MN1.

It should be noted that since MA-CN has cached the identity HID-MN1 and station location marker vLoc-MA4- of MN1 Mapping relations between MN1, therefore subsequent MA-CN receives after being sent to the data packet of MN1 (the structure of data packet such as 22 institute of table again Show), then the identity HID-MN1 and station location marker vLoc-MA4- of MN1 can be inquired according to the target identification of the data packet Mapping relations between MN1, and the target identification of the data packet is replaced using the station location marker vLoc-MA4-MN1 that inquires, and Updated data packet is sent, which can be routed directly to MA4, and be sent to MN1 (i.e. shown in dotted line in Fig. 9 B as MA4 The step of can be omitted).

Referring to Figure 10 A and Figure 10 B, it is currently accessed MA4 in MN1, and uncached in MA-CN has target network node MN1's In the case where station location marker, CN sends the process of data to MN1, and the process is similar with process shown in Fig. 7 A and Fig. 7 B.Such as figure Shown in 10A and Figure 10 B, which may include following steps:

Step 1001:CN1 delivers a packet to the MA-CN that CN1 is currently accessed, and the source of the data packet is identified as the body of CN Part mark HID-CN1, the purpose mark of the data packet are the identity HID-MN1 of MN1.

After step 1002:MA-CN receives data packet, there are since MA-CN is uncached identity and the station location marker of MN1 Mapping relation information, therefore MA-CN routes a data packet to the local MA1 of MN1 according to the destination address HID-MN1 of data packet.

After step 1003a:MA1 receives data packet, identity map is inquired according to the purpose mark HID-MN1 of the data packet Table, obtains identity map entry<Name-MN1 of MN1, and HID-MN1, vLoc-MA4-MN1>, due in the identity map entry Identity and station location marker it is different, therefore MA1 judge that MN1 has been moved out home network, therefore to DMS1 transmission Notification Request message, wherein the identity HID-MN1 and station location marker vLoc-MA4-MN1 of MN1 is carried, And the identity HID-CN1 of CN1, thus trigger DMS by station location marker of the MN1 in the network being currently accessed notify to The access mobile anchor point MA-CN of CN1.

After step 1004a:DMS1 receives the Notification Request message of MA1 transmission, according in the message Mapping table in the identity HID-CN1 inquiry field of the CN1 of carrying.Since the domain of CN1 is not present in the domain of DMS1 in mapping table Interior map entry, therefore DMS1 obtains the home network DMS3 of CN1 according to mapping table between HID-CN1 inquiry field；DMS1 is to DMS3 Notification Request message is sent, the identity of the identity HID-CN1 and MN1 of CN1 can be carried in the message Identify the HID-MN1 and station location marker vLoc-MA4-MN1 in the network being currently accessed.

Further, it after DMS3 receives the Notification Request message that DMS1 is sent, can be returned to DMS1 Notification Response message (step 1004b).Further, DMS1 receives the Notification of MA1 transmission After Request message Notification Response message (step 1003b) can be returned to MA1.

After step 1005a:DMS3 receives the Notification Request message of DMS1 transmission, according in the message Mapping table in the identity HID-CN1 inquiry field of the CN1 of carrying, obtains map entry < Name-CN1, HID- in the domain of CN1 CN1, IP-MA-CN1, IP-MA-CN1, --- >, wherein the address of the local MA of CN1 and the address for the MA being currently accessed are IP-MA-CN1；DMS3 currently connects according to the address for the MA-CN that CN1 is currently accessed in the map entry of the CN1 inquired to CN1 The MA-CN entered sends Location Update Notification message, wherein the identity HID-MN1 of MN1 can be carried With the station location marker vLoc-MA4-MN1 of MN1.

Further, MA-CN can be to after receiving the Location Update Notification message of DMS3 transmission DMS3 returns to Location Update Acknowledgement message (step 1005b).

After step 1006:MA-CN receives the Location Update Notification message of DMS3 transmission, according to this The station location marker vLoc-MA4-MN1 of the MN1 carried in message replaces the destination address for the data packet that destination address is HID-MN1 It is changed to station location marker vLoc-MA4-MN1 of the MN1 in the network being currently accessed, and sends the updated data packet of purpose mark.

Step 1007: data packet is routed to MA4, after MA4 receives data packet, according to the purpose mark vLoc- of data packet MA4-MN1 inquires identity map table, obtains corresponding identity HID-MN1, and update the number using the HID-MN1 inquired MN1 is transmitted to according to the purpose mark of packet, then by updated data packet.

It should be noted that since MA-CN receives the Location Update Notification message of DMS3 transmission Afterwards, the mapping relations between the identity HID-MN1 and station location marker vLoc-MA4-MN1 of MN1 have been cached, therefore subsequent MA-CN is received again be sent to the data packet of MN1 after, then can according to the target identification of the data packet inquire MN1 identity Mapping relations between HID-MN1 and station location marker vLoc-MA4-MN1, and use the station location marker vLoc-MA4- inquired MN1 replaces the target identification of the data packet, and sends updated data packet, which can be routed directly to MA4, and by MA4 is sent to MN1 (i.e. step shown in dotted line can be omitted in Figure 10 B).

Although can be seen that MN passes through multiple network switching, in handoff procedure, DMS is based on mapping table in domain, only asks The MA and local MA that ask the MN last time to access update the identity map entry of the MN, therefore data packet can be according to handoff procedure Involved in MA identity map table carry out data packet routing forwarding.

Above-mentioned process describes for MN is communicated with CN, based on the above principles, in network between different network node Communication process can refer to above-mentioned process and realize.

By above description as can be seen that DMS can be created in the domain of the network node according to the identity specified for MN Map entry, in the domain created map entry for saving the identity of the network node, the network node is currently accessed Mobile anchor point between mapping relations；It is the network section for accessing visited network that mobile anchor point, which can also request domain mapping server, Point distribution station location marker, and map entry in the domain of the network node is created, map entry is for saving this in the domain created The mobile anchor accessed before the mobile anchor point and the network node that the identity of network node, the network node are currently accessed Mapping relations between point.In this way, based in the embodiment of the present application domain mapping server and mobile anchor point can safeguard network mark Know mapping relations, provides guarantee for the routing of data packet in data transmission procedure.

Based on the same technical idea, the embodiment of the present application also provides a kind of mobile anchor point equipment, which is set The process provided by the above embodiment of standby achievable the application.

It is the structural schematic diagram of MA equipment provided by the embodiments of the present application referring to Figure 11.The MA equipment application is in including DMS With the communication system of MA, the MA can include: enquiry module 1101, processing module 1102, forwarding module 1103 further may be used also Including notification module 1104, in which:

Enquiry module 1101, for receiving the first data packet from network node, the purpose of first data packet It is identified as the identity of target network node；According to the inquiry of the purpose mark of first data packet and the purpose mark pair The station location marker answered.Processing module 1102, for indicating in the case where enquiry module 1101 inquires corresponding station location marker The station location marker inquired of forwarding module 1103 updates the purpose mark of first data packet, sends updated first number According to packet；In the case where enquiry module 1101 does not inquire corresponding station location marker, instruction forwarding module 1103 is according to described the The purpose mark of one data packet sends first data packet to the local MA of the target network node.Forwarding module 1103, for being handled according to the instruction of the processing module.

Optionally, enquiry module 1101 is also used to: receiving the second data packet from other MA, second data packet Purpose mark be target network node station location marker；Identity map is inquired according to the purpose mark of second data packet Table obtains and the matched identity map entry of the purpose mark, wherein includes the body of network node in the identity map table The map entry of part mark and station location marker.Processing module 1102 is also used to: according to the body in the identity map entry inquired Whether part mark and station location marker are identical, judge whether the target network node is currently located at home network, if they are the same, then institute It states target network node and is currently located at home network, then indicate that second data packet is sent to the mesh by forwarding module 1103 Network node is marked, if not identical, the target network node is currently not located at home network, then indicates that notification module 1104 is logical The DMS for crossing local administrative domain notifies station location marker of the target network node in the network being currently accessed to give source network section The MA that point is currently accessed, the MA for being currently accessed the source network node is according to the target network node in the MA being currently accessed In station location marker encapsulated data packet.

Optionally, notification module 1104 is specifically used for: the DMS into local administrative domain sends notice request, wherein carrying Station location marker in the network being currently accessed of the identity of the target network node and the target network node and The identity of source network node, the notice request are used to indicate DMS for the target network node in the MA being currently accessed In station location marker notify the MA being currently accessed to source network node.

Optionally, processing module 1102 is also used to: after receiving the third data packet from other MA, if in setting duration The location updating notification message that the DMS in local administrative domain is sent inside is received, then is carried according in location updating notice The third data packet station location marker of the target network node in the network being currently accessed, update the target network section The identity map entry of point, and indicate that notification module 1104 sends notice request to the DMS；Wherein, the third data packet Destination address be target network node station location marker.Notification module 1104 is also used to: according to the instruction of processing module 1102 Notice request is sent to the DMS, wherein carrying the identity of the target network node, the target network node is being worked as The identity of station location marker and source network node in the network of preceding access, the notice request is for triggering DMS for institute It states station location marker of the target network node in the network being currently accessed and notifies the MA being currently accessed to source network node.

Optionally, processing module 1102 is also used to: being the MA that source network node is currently accessed in this MA, and is received local pipe After managing the location updating notice that the DMS in domain is sent, by the identity of the target network node wherein carried and station location marker into Row caching.

Based on the same technical idea, the embodiment of the present application also provides a kind of domain mapping server, the domain mapping services Device can realize the process provided by the above embodiment of the application.

It is the structural schematic diagram of DMS provided by the embodiments of the present application referring to Figure 12.The DMS is applied to include DMS's and MA Communication system, the DMS can include: first interface module 1201, enquiry module 1202 further may also include second interface mould Block 1203, in which:

First interface module 1201, for receiving the notice request of the transmission of the MA in local administrative domain, wherein carrying mesh Mark the station location marker and source network of the identity and the target network node of network node in the network being currently accessed The identity of node；Wherein, the MA is in the data for receiving the source network node and being sent to the target network node Bao Hou is obtaining what the target network node was sent after the station location marker in the visited network being switched to.Enquiry module 1202, for mapping table in the identity inquiry field according to the source network node carried in the notice request, if inquiring Map entry in the domain of the source network mark, it is determined that the source network node and the first DMS are located at same local pipe Manage domain；Wherein, map entry is used to store in the domain of a network node: the identity of the network node, the network node The address of local MA, the MA accessed before the address of MA that is currently accessed of the network node and the network node address column Table.First interface module 1201 is also used to: according to the address for the MA that the source network node is currently accessed, by the target network Station location marker of the node in the network being currently accessed is sent to the MA that the source network node is currently accessed, to trigger the source The MA that network node is currently accessed retransmits data packet according to the station location marker.

Optionally, enquiry module 1202 is also used to: if according to the identity of the source network node carried in the notice request Identify mapping table in inquiry field, do not obtain map entry in the domain of source network mark, it is determined that the source network node with First DMS, then according to mapping table between the identity inquiry field of the source network node, is obtained not in same local administrative domain To the DMS of the source network node local administrative domain；Wherein, between the domain in mapping table including each DMS mark and belong to The range of the network node identity of each DMS.Second interface module 1203 is used for: the DMS of Xiang Suoshu source network node ownership Notice request is sent, carries the identity of source network node, the identity of target network node in the notice request And station location marker of the target network node in the network being currently accessed, the notice request is for triggering the source network section Station location marker of the target network node in the network being currently accessed is sent to the source network node by the DMS of point ownership The MA being currently accessed.

Optionally, the source network node and the first DMS are located at same local administrative domain, the target network node It is located at same local administrative domain with the 2nd DMS.Second interface module 1203 is also used to: the notice request that the 2nd DMS is sent is received, The identity of source network node, the identity of target network node and target network section are carried in the notice request Station location marker of the point in the network being currently accessed；Wherein, the notice request is that the 2nd DMS is receiving local management The identity for carrying target network node of the MA transmission in domain and the target network node are in the network being currently accessed Station location marker and source network node identity notice request after, according to the identity of the source network node from Mapping table, which inquires, between domain sends after the first DMS.Enquiry module 1202 is also used to: according to the source carried in the notice request Mapping table in the identity inquiry field of network node, obtains map entry in the domain of the source network node.First interface mould Block 1201 is also used to: the MA being currently accessed according to the source network node, by the target network node in the net being currently accessed Station location marker in network notifies the MA being currently accessed to the source network node.

Based on the same technical idea, the embodiment of the present application also provides a kind of communication equipment, which can be realized The process of MA in above-described embodiment of the application.It is the structural representation of communication equipment provided by the embodiments of the present application referring to Figure 13 Figure.The communication equipment can include: processor 1301, memory 1302, network interface 1303 and bus interface.

Processor 1301, which is responsible for management bus architecture and common processing, memory 1302, can store processor 1301 and exists Used data when operation are executed, network interface 1303 is for carrying out information transmit-receive.

Bus architecture may include the bus and bridge of any number of interconnection, specifically represented by processor 1301 one or The various circuits for the memory that multiple processors and memory 1302 represent link together.Bus architecture can also will be such as outer Various other circuits of peripheral equipment, voltage-stablizer and management circuit or the like link together, these are all that this field institute is public Know, therefore, it will not be further described herein.Bus interface provides interface.Processor 1301 is responsible for management bus Framework and common processing, memory 1302 can store the used data when executing operation of processor 1301.

Network interface 1303 may include a receiver to provide wireless interface and one or more for the communication equipment Network and/or any suitable equipment are communicated.Network interface 1303 may include any suitable hardware and/or firmware.Net Network interface 1303 may include mutiple antennas to provide MIMO wireless interface.In one embodiment, network interface 1303 may include a network adapter, a wireless network adapter, a telephone modem and/or wireless-modulated Demodulator.

The process that the embodiment of the present invention discloses, can be applied in processor 1301, or realized by processor 1301.? During realization, each step of signal processing flow can be by the integrated logic circuit of the hardware in processor 1301 or soft The instruction of part form is completed.Processor 1301 can be general processor, digital signal processor, specific integrated circuit, scene Programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, can be with Realize or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.General processor can be micro- place Manage device or any conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly in firmly Part processor executes completion, or in processor hardware and software module combination execute completion.Software module can be located at Random access memory, flash memory, read-only memory, programmable read only memory or electrically erasable programmable memory, register etc. In the storage medium of this field maturation.The storage medium is located at memory 1302, and processor 1301 is read in memory 1302 Information, in conjunction with the step of its hardware completion signal sampling rate flow path switch.

Based on the same technical idea, the embodiment of the present application also provides a kind of communication equipment, which can be realized The process of DMS in above-described embodiment of the application.It is the structural representation of communication equipment provided by the embodiments of the present application referring to Figure 14 Figure.The communication device can include: processor 1401, memory 1402, network interface 1403 and bus interface.

Processor 1401, which is responsible for management bus architecture and common processing, memory 1402, can store processor 1401 and exists Used data when operation are executed, network interface 1403 is for carrying out information transmit-receive.

Bus architecture may include the bus and bridge of any number of interconnection, specifically represented by processor 1401 one or The various circuits for the memory that multiple processors and memory 1402 represent link together.Bus architecture can also will be such as outer Various other circuits of peripheral equipment, voltage-stablizer and management circuit or the like link together, these are all that this field institute is public Know, therefore, it will not be further described herein.Bus interface provides interface.Processor 1401 is responsible for management bus Framework and common processing, memory 1402 can store the used data when executing operation of processor 1401.

Network interface 1403 may include a receiver to provide wireless interface and one or more for the communication equipment Network and/or any suitable equipment are communicated.Network interface 1403 may include any suitable hardware and/or firmware.Net Network interface 1403 may include mutiple antennas to provide MIMO wireless interface.In one embodiment, network interface 1403 may include a network adapter, a wireless network adapter, a telephone modem and/or wireless-modulated Demodulator.

The process that the embodiment of the present invention discloses, can be applied in processor 1401, or realized by processor 1401.? During realization, each step of signal processing flow can be by the integrated logic circuit of the hardware in processor 1401 or soft The instruction of part form is completed.Processor 1401 can be general processor, digital signal processor, specific integrated circuit, scene Programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, can be with Realize or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.General processor can be micro- place Manage device or any conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly in firmly Part processor executes completion, or in processor hardware and software module combination execute completion.Software module can be located at Random access memory, flash memory, read-only memory, programmable read only memory or electrically erasable programmable memory, register etc. In the storage medium of this field maturation.The storage medium is located at memory 1402, and processor 1401 is read in memory 1402 Information, in conjunction with the step of its hardware completion signal sampling rate flow path switch.

In conclusion the embodiment of the present application provides the identity map scheme based on domain mapping server and mobile anchor point, The program can satisfy mapping mechanism to expansible, low delay requirement, and can satisfy fast mapping and upgrade demand, with suitable Should before internet architecture growth requirement.

The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the application range.

Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies Within, then the application is also intended to include these modifications and variations.

Claims

1. a kind of network identity mapping method, which is characterized in that applied to including domain mapping server DMS's and mobile anchor point MA Communication system, comprising:

MA receives the first data packet from network node, and the purpose mark of first data packet is target network node Identity；

The MA inquires station location marker corresponding with the purpose mark according to the purpose mark of first data packet；

If inquiring corresponding station location marker, the purpose mark of first data packet is updated with the station location marker inquired, Send updated first data packet；If not inquiring, described first is counted according to the purpose mark of first data packet The local MA of the target network node is sent to according to packet；

The MA receives the second data packet from other MA, and the purpose mark of second data packet is target network node Station location marker；

The MA inquires identity map table according to the purpose mark of second data packet, obtains matched with the purpose mark Identity map entry, wherein the map entry of identity and station location marker in the identity map table including network node；

The MA according in the identity map entry inquired identity and station location marker it is whether identical, judge the target Whether network node is currently located at home network, and if they are the same, then the target network node is currently located at home network, then by institute It states the second data packet and is sent to the target network node, if not identical, the target network node is currently not located at local Network is then notified station location marker of the target network node in the network being currently accessed by the DMS of local administrative domain Worked as to the MA that source network node is currently accessed, the MA for being currently accessed the source network node according to the target network node Station location marker encapsulated data packet in the MA of preceding access.

2. the method as described in claim 1, which is characterized in that by the DMS of local administrative domain by the target network node Station location marker in the MA being currently accessed notifies the MA being currently accessed to source network node, comprising:

DMS of the MA into local administrative domain sends notice request, wherein carrying the identity of the target network node It is described logical with the identity of station location marker and source network node of the target network node in the network being currently accessed Know that request is used to indicate DMS and notifies station location marker of the target network node in the MA being currently accessed to source network node The MA being currently accessed.

3. the method as described in claim 1, which is characterized in that further include:

The MA receives the third data packet from other MA, and the destination address of the third data packet is target network node Station location marker；

After the MA receives the location updating notification message of the transmission of the DMS in local administrative domain within the set duration, then basis Position of the target network node of the third data packet carried in the location updating notice in the network being currently accessed Mark updates the identity map entry of the target network node, and sends notice request to the DMS, wherein described in carrying The station location marker and source network of the identity of target network node, the target network node in the network being currently accessed The identity of node, notice request is for triggering DMS for the target network node in the network being currently accessed Station location marker notifies the MA being currently accessed to source network node.

4. method according to any one of claims 1 to 3, which is characterized in that further include:

After the location updating notice that the DMS that the MA that source network node is currently accessed receives local administrative domain is sent, will wherein it carry Target network node identity and station location marker cached.

5. a kind of data transmission method, which is characterized in that applied to the communication comprising domain mapping server DMS and mobile anchor point MA System, comprising:

First DMS receives the notice request that the MA in local administrative domain is sent, wherein carrying the identity mark of target network node Know the identity with station location marker and source network node of the target network node in the network being currently accessed；Its In, the notice request is the MA in the data packet for receiving the source network node and being sent to the target network node Afterwards, obtaining what the target network node was sent after the station location marker in the visited network being switched to；

First DMS according to mapping table in the identity inquiry field of source network node carried in the notice request, if Inquire map entry in the domain of the source network mark, it is determined that the source network node is located at same with the first DMS Local administrative domain；Wherein, map entry is used to store in the domain of a network node: the identity of the network node, the net The MA's accessed before the address for the MA that the address of the local MA of network node, the network node are currently accessed and the network node Address list；

The address for the MA that first DMS is currently accessed according to the source network node, by the target network node current Station location marker in the network of access is sent to the MA that the source network node is currently accessed, and is worked as with triggering the source network node The MA of preceding access retransmits data packet according to the station location marker.

6. method as claimed in claim 5, which is characterized in that if the first DMS is carried according in the notice request Mapping table in the identity inquiry field of source network node does not obtain map entry in the domain of the source network mark, it is determined that The source network node and the first DMS be not in same local administrative domain, then further include:

First DMS obtains the source network node according to mapping table between the identity inquiry field of the source network node The DMS of local administrative domain；It wherein, include the mark of each DMS and the network node body for belonging to each DMS in mapping table between the domain The range of part mark；

The DMS that first DMS belongs to the source network node sends notice request, carries active net in the notice request The position of the identity of network node, the identity of target network node and target network node in the network being currently accessed Mark is set, the notice request connects the target network node currently for triggering the DMS of the source network node ownership The station location marker in network entered is sent to the MA that the source network node is currently accessed.

7. method as claimed in claim 5, which is characterized in that the source network node and the first DMS are located at same Ground management domain, the target network node and the 2nd DMS are located at same local administrative domain, the method also includes:

First DMS receives the notice request that the 2nd DMS is sent, and the identity of source network node is carried in the notice request Mark, the station location marker of the identity of target network node and target network node in the network being currently accessed；Wherein, The notice request is the identity for carrying target network node that the 2nd DMS is sent in the MA for receiving local administrative domain The identity of mark and station location marker and source network node of the target network node in the network being currently accessed After notice request, sent after inquiring the first DMS from mapping table between domain according to the identity of the source network node；

First DMS is obtained according to mapping table in the identity inquiry field of the source network node carried in the notice request Map entry in the domain of the source network node；

The target network node is being currently accessed by MA that the first DMS is currently accessed according to the source network node Station location marker in network notifies the MA being currently accessed to the source network node.

8. a kind of mobile anchor point equipment, which is characterized in that applied to the communication comprising domain mapping server DMS and mobile anchor point MA System, the MA include:

Enquiry module, for receiving the first data packet from network node, the purpose mark of first data packet is mesh Mark the identity of network node；Position corresponding with the purpose mark is inquired according to the purpose mark of first data packet Mark；

Processing module, in the case where the enquiry module inquires corresponding station location marker, instruction forwarding module is with looking into The station location marker ask updates the purpose mark of first data packet, sends updated first data packet；In the inquiry In the case that module does not inquire corresponding station location marker, instruction forwarding module will according to the purpose mark of first data packet First data packet is sent to the local MA of the target network node；

Forwarding module, for being handled according to the instruction of the processing module；

The enquiry module is also used to: receiving the second data packet from other MA, the purpose mark of second data packet For the station location marker of target network node；Identity map table is inquired according to the purpose mark of second data packet, is obtained and institute State the matched identity map entry of purpose mark, wherein identity and position in the identity map table including network node Set the map entry of mark；

The processing module is also used to: according in the identity map entry inquired identity and station location marker whether phase Together, judge whether the target network node is currently located at home network, if they are the same, then the target network node is currently located at Home network then indicates that second data packet is sent to the target network node by the forwarding module, if not identical, The target network node is currently not located at home network, then indicates notification module by the DMS of local administrative domain by the mesh It marks station location marker of the network node in the network being currently accessed and notifies the MA being currently accessed to source network node, make the source net Station location marker encapsulated data packet of the MA that network node is currently accessed according to the target network node in the MA being currently accessed.

9. mobile anchor point equipment as claimed in claim 8, which is characterized in that the notification module is specifically used for:

DMS into local administrative domain sends notice request, wherein carrying the identity of the target network node and described The identity of station location marker and source network node of the target network node in the network being currently accessed, the notice request DMS is used to indicate to notify currently to connect to source network node by station location marker of the target network node in the MA being currently accessed The MA entered.

10. mobile anchor point equipment as claimed in claim 8, which is characterized in that

The processing module is also used to: after receiving the third data packet from other MA, if receiving this within the set duration The location updating notification message that DMS in ground management domain is sent, then according to the third carried in location updating notice Station location marker of the target network node of data packet in the network being currently accessed, the mark for updating the target network node are reflected Entry is penetrated, and indicates that the notification module sends notice request to the DMS；Wherein, the destination address of the third data packet For the station location marker of target network node；

The notification module is also used to: notice request is sent to the DMS according to the instruction of the processing module, wherein carrying institute State the station location marker and source net of the identity, the target network node of target network node in the network being currently accessed The identity of network node, notice request is for triggering DMS for the target network node in the network being currently accessed Station location marker notify the MA being currently accessed to source network node.

11. the mobile anchor point equipment as described in any one of claim 8 to 10, which is characterized in that the processing module is also used In: it is the MA that source network node is currently accessed in this MA, and after the location updating notice of the DMS transmission of reception local administrative domain, The identity of the target network node wherein carried and station location marker are cached.

12. a kind of domain mapping server, which is characterized in that applied to logical comprising domain mapping server DMS and mobile anchor point MA Letter system, the domain mapping server include:

First interface module, for receiving the notice request of the transmission of the MA in local administrative domain, wherein carrying target network section The body of station location marker and source network node of the identity and the target network node of point in the network being currently accessed Part mark；Wherein, to be the MA be sent to the target network node receiving the source network node for notice request Data packet after, obtaining what the target network node was sent after the station location marker in the visited network being switched to；

Enquiry module, for according to mapping table in the identity inquiry field of source network node carried in the notice request, If inquiring map entry in the domain of the source network mark, it is determined that the source network node and the first DMS are located at same Ground management domain；Wherein, map entry is used to store in the domain of a network node: the identity of the network node, the network The ground of the MA accessed before the address for the MA that the address of the local MA of node, the network node are currently accessed and the network node Location list；

The first interface module is also used to: according to the address for the MA that the source network node is currently accessed, by the target network Station location marker of the network node in the network being currently accessed is sent to the MA that the source network node is currently accessed, described in triggering The MA that source network node is currently accessed retransmits data packet according to the station location marker.

13. domain mapping server as claimed in claim 12, which is characterized in that further include: second interface module；

The enquiry module is also used to: if according in the identity inquiry field of the source network node carried in the notice request Mapping table does not obtain map entry in the domain of the source network mark, it is determined that the source network node and the first DMS are not In same local administrative domain, then according to mapping table between the identity inquiry field of the source network node, the source network is obtained The DMS of node local administrative domain；It wherein, include the mark of each DMS and the network section for belonging to each DMS in mapping table between the domain The range of point identity；

The second interface module is used for: the DMS of Xiang Suoshu source network node ownership sends notice and requests, in the notice request The identity of source network node, the identity of target network node and target network node is carried to be currently accessed Station location marker in network, the notice request the DMS for triggering the source network node ownership by the target network section Station location marker of the point in the network being currently accessed is sent to the MA that the source network node is currently accessed.

14. domain mapping server as claimed in claim 13, which is characterized in that the source network node and the first DMS Positioned at same local administrative domain, the target network node and the 2nd DMS are located at same local administrative domain；

The second interface module is also used to: being received the notice request that the 2nd DMS is sent, is carried active net in the notice request The position of the identity of network node, the identity of target network node and target network node in the network being currently accessed Set mark；Wherein, to be the 2nd DMS carry target network what the MA for receiving local administrative domain was sent for the notice request The station location marker and source network node of the identity of network node and the target network node in the network being currently accessed Identity notice request after, the first DMS is inquired from mapping table between domain according to the identity of the source network node It sends afterwards；

The enquiry module is also used to: according to reflecting in the identity inquiry field of source network node carried in the notice request Firing table obtains map entry in the domain of the source network node；

The first interface module is also used to: the MA being currently accessed according to the source network node, by the target network node Station location marker in the network being currently accessed notifies the MA being currently accessed to the source network node.

15. a kind of communication equipment characterized by comprising network interface, processor and memory；

The memory, for storing computer program instructions；

The processor is coupled to the memory, for reading the computer program instructions of the memory storage, and executes Step according to any one of claims 1 to 4.

16. a kind of communication equipment characterized by comprising network interface, processor and memory；

The memory, for storing computer program instructions；

The processor is coupled to the memory, for reading the computer program instructions of the memory storage, and executes Step as described in any one of claim 5 to 7.