CN103997459A - Communication initiation, information/data message forwarding and routing configuration method/system - Google Patents

Abstract

The invention provides a routing configuration method in subscriber identifier & locator separation networks. The routing configuration method solves the problem of routing delivery incapability during data message forwarding in the existing subscriber identifier & locator separation networks. According to the method, a mapping forwarding plane is divided into a plurality of domains, and in addition, an ILR/PTF (Identity Location Register/Packet Transfer Function) in the mapping forwarding plane is divided into intra-domain nodes and inter-domain interconnection nodes; the each inter-domain interconnection node builds, stores and maintains routing information of all of the domains for forming an inter-domain routing table, and contents stored in the inter-domain routing table are the routing information of the each domain; and the each intra-domain node builds, stores and maintains the routing information of all terminals in the domain for forming an intra-domain routing table, and the contents stored in the intra-domain routing table are identifier information of the each node in the domain.

Description

The forwarding of initiating communication, information/data message and method for configuring route/system

The cross reference of related application

The application is divisional application.The application number of original application is 200910174295.3, and the applying date is on September 17th, 2009, and denomination of invention is " forwarding of initiating communication, information/data message and method for configuring route/system ".

Technical field

The present invention relates to communication technical field, relate in particular to forwarding and the method for configuring route/system of a kind of initiating communication, information/data message under a kind of identify label and position split-frame.

Background technology

Existing internet widely used TCP/IP(Transmission Control Protocol/Internet Protocol, transmission control protocol/internet protocol) IP address has dual-use function in agreement, both the station location marker in network topology as the communication terminal host network interface of network layer, again as the identify label of transport layer host network interface.ICP/IP protocol is not considered the situation of host mobility at the beginning of design.But in the time that host mobility is more and more general, the semanteme overload defect of this IP address is day by day obvious.In the time that the IP address of main frame changes, not only route changes, and the identify label of communication terminal main frame also changes, and will cause like this routing overhead more and more heavier, and the variation of host IP address can cause application and the interruption being connected.

The object that identify label and position separation problem propose is the problems such as semanteme overload in order to solve IP address and routing overhead be serious, the dual-use function of IP address is separated, realize the support that mobility, many locals property, IP address is dynamically heavily distributed, alleviated the problems such as the exchanging visit between heterogeneous networks region in routing overhead and Next Generation Internet.

In prior art, the implementation method of router Network Based is one of solution separating with position about identify label.Mobile node (Mobile Node, be called for short MN) to Correspondent Node (Correspondent Node, be called for short CN) when initiating communication, by its access service node (Access Service Node, be called for short ASN) to this territory identity location register (Identity Location Register, be called for short ILR) launch position query script, by this territory identity location register, the home domain identity location register of object terminal, and the cooperation of territory, the current place of object terminal identity location register, obtain the current location information of object terminal, return to access service node, ensure its correctly initiating communication connection.

Mainly there are the following problems for the scheme of above-mentioned router Network Based:

1. the trigger condition of source ASN launch position query script is mobile node initiating communication, in the process of MN initiating communication, need source ASN to carry out CN position enquiring process, now, in source ASN, do not have station location marker (the Routing-Location Identifier of CN, be called for short RID) and identify label (Access Identifier, be called for short AID) between map information, cannot be according to the routing iinformation forwarding data packets taking opposite end RID as identifying.And Internet Transmission condition and network element position based on different, the CN position enquiring process that source ASN initiates may continue the time that hundreds of millisecond arrives several seconds, and how to process the problem that is mail to the data message of CN during inquiry by MN about source ASN, not clear and definite in prior art;

2. the router of existing the Internet or accessing gateway equipment, in the time of forwarding data packets, are to grow coupling most according to routing table entry, search to forward after route to forward.In network, generally exist a large amount of routes can not send to message, the such as non-existent situation of Correspondent Node etc.In addition, consider the requirement of saving network throughput, can exist border router not configure the situation of default route, corresponding this scene, under network identity position separation, also can not send to message by existence in a large number.How to process for these messages, not clear and definite in prior art yet.

In addition, the existing agreement LISP(Locator Indentify Separation Protocol separating with position based on identify label, location identity separated protocol) technology is that the identify label of a kind of mode Network Based (network-based) separates solution with position, but in this solution, how not clear and definite mobile node processes the process of initiating communication under roaming scence.And based on current existing solution, if consider the mobility of terminal, will produce BGP(Border Gateway Protocol, Border Gateway Protocol) the excessive problem of routing table.

Summary of the invention

The technical problem to be solved in the present invention is, the method for configuring route in a kind of identify label and locator separation network is provided, and the route while solving data message forwarding in existing identify label and locator separation network can not be sent to problem.

In order to address the above problem, the invention provides the method for configuring route in a kind of identify label and locator separation network, mapping forward plane is divided into multiple territories, and the ILR/PTF in described mapping forward plane is divided into interlink node between territory interior nodes and territory,

Between each described territory, interlink node is set up, is preserved, safeguards the routing iinformation in all territories, routing table between formative region, the routing iinformation that the content of storing in described inter-domain routing table is each territory;

The routing iinformation of all terminals in this territory is set up, preserved, safeguards to each described territory interior nodes, formative region internal routing table, and the content of storing in the internal routing table of described territory is the identification information of each node in this territory.

Further, receiving after the route requests that comprises object terminal AID of terminal transmission, by inquiring about described inter-domain routing table, be addressed to the home domain of described object terminal;

Then pass through the territory internal routing table of the home domain of the described object terminal of inquiry, in the home domain of described object terminal, be addressed to the home node of described object terminal.

Further, in described route destination address, comprise home domain information and node identification information.

Further, in the time increasing new territory in described network, between the territory in this newly-increased territory, interlink node will spread its routing iinformation to interlink node between other all territories, and between described other territory, interlink node preserves the routing iinformation in described newly-increased territory into described inter-domain routing table.

Further, in the time increasing new routing node in described network, this newly-increased routing node will spread its node identification information in its home domain, and described node identification information is preserved the territory internal routing table into this territory by other territory interior nodes in its home domain.

Further, the routing forwarding process of described route requests specifically comprises:

Receive after described route requests, according to inter-domain routing table described in the described home domain information inquiry comprising in route destination address wherein, if the corresponding home domain of described route destination address is not this territory, described route requests is forwarded to corresponding home domain, then inquires about the territory internal routing table of corresponding home domain; Otherwise, inquire about the territory internal routing table in this territory, described route requests is forwarded to corresponding home node.

Further, the division in described territory, by runing strategy decision, is divided into multiple territories according to carrier network, enterprise network or countries and regions by described network.

Compared with prior art, above-mentioned embodiment has following beneficial effect:

Adopt the routing conversion of above-mentioned data message, the route that solves the data message existing in existing route retransmission method can not be sent to problem.

Brief description of the drawings

Fig. 1 is the network topology schematic diagram that the present invention is based on identify label and position separation;

Fig. 2 is the relevant interface schematic diagram based on identify label and position separation of the embodiment of the present invention;

Fig. 3 is the schematic flow sheet of the terminal initiating communication of the embodiment of the present invention;

Fig. 4 is that the terminal of the embodiment of the present invention is to the schematic flow sheet of ILR registration and position renewal;

Fig. 5 is the topological schematic diagram of the mapping forward plane of the embodiment of the present invention;

Fig. 6 is the signalling route schematic diagram of the map information of the terminal inquiry Correspondent Node of the embodiment of the present invention.

Embodiment

Below in conjunction with drawings and Examples, the present invention will be described in more detail.

The core concept of identify label and position separation is: network is divided into Access Layer and core layer, is the unique User Identity of each user assignment in network, and it is constant that this User Identity remains in moving process; In network, there are two kinds of mark types: User Identity (Access Identifier is called for short AID) and station location marker (Routing-Location Identifier is called for short RID).Wherein AID is the unique identify label for each user assignment in network, can only use at Access Layer, and in the moving process of user terminal, remain constant, between user terminal, use AID mark opposite end, between user terminal, only need to use the AID of opposite end to communicate; RID is the station location marker distributing for user terminal, can only use in core layer.

The present embodiment based on identify label and the concrete network topology of position separation as shown in Figure 1, network is divided into Access Network and backbone network by this framework, backbone network is divided into again two function planes independently in logic: mapping forward plane and broad sense Forwarding plane.Access Network is positioned at the edge of backbone network, is responsible for the access of all terminals.Backbone network is responsible for route and the forwarding of the inter-terminal data message accessing by Access Network.Access service node is positioned at the separation of backbone network and Access Network, has the interface with Access Network and backbone network.Access Network and backbone network do not have overlapping on topological relation.

In this framework, the user terminal of access can be one or more in mobile node, stationary nodes and nomadic node.

Access Network is used to user terminal that two layers of (physical layer and link layer) access service, the physics access link between maintenance customer's terminal and ASN are provided.Access Network can be base station system, as BSS(Base Station Subsystem, base station sub-system), RAN(Radio Access Network, wireless access network), eNodeB(evolved Node B, the Node B of evolution) etc., also can be xDSL(Digital Subscriber Line, Digital Subscriber Line), AP(Access Point, wireless access points) etc.

ASN, is mainly used in being connected of access service, maintenance terminal and backbone network being provided and forwarding user data for user terminal.

Broad sense Forwarding plane is mainly used in carrying out routing and forwarding data packets according to the RID in data message.

Mapping forward plane is mainly used in preserving the map information (being the map information between RID-AID) of user terminal identity and position, process the registration flow process of user terminal, process the position enquiring flow process of user terminal, route also forwards the data message taking AID as destination address.

The main network element and the functional entity that in Fig. 1, relate to comprise:

ASN, for the annexation of maintenance customer's terminal and backbone network, is terminal distribution RID, processes switching flow, processes and registers flow process, processes charging and authorizing procedure, the AID-RID map information of maintenance and inquiry communication opposite end.

Particularly, ASN also for encapsulating, route mail to terminal or data message that terminal is sent.

ASN is in the time receiving the data message that terminal is sent, AID-RID mapping table according in destination address in data message (being the AID of Correspondent Node) inquiry local cache (CACHE): if find corresponding AID-RID map entry, the RID of the communication terminal of finding is encapsulated in to header and is forwarded to broad sense Forwarding plane; If do not find corresponding AID-RID map entry, data message forwarding is arrived to mapping forward plane, and initiate the flow process of inquiry (Correspondent Node) AID-RID map information to mapping forward plane.

ASN, in the time receiving the data message that mails to terminal, carries out decapsulation processing to data message, peels off the heading that comprises RID newly-increased in data message, mails to terminal.

Universal Switching Router (General Switch Router, be called for short GSR), is arranged in the broad sense Forwarding plane of backbone network, is mainly used in route and forwards taking RID as source address and the data message of destination address.

Authentication center; be responsible for recording the user property in this architecture network; comprise the information such as class of subscriber, authentication information and user's grade of service, produce the user security information for authentication, integrity protection and encryption, in the time that user accesses, user is carried out to legitimacy authentication and authorization.Bi-directional authentification between authentication center's network enabled and user.

Identity location register/packet forwarding (ILR/PTF:Identity Location Register/Packet Transfer Function) can be two functional modules on same entity, is arranged in the mapping forward plane of backbone network.

ILR is identity location register, for preserving and safeguard this architecture network user's AID-RID map information, realizes and registers function, and process the position enquiring flow process of Correspondent Node.

PTF is packet forwarding.Mapping forward plane is being received after the data message that ASN sends to, also forwarded according to object AID route in mapping forward plane by PTF: in mapping forward plane, PTF node is being found after the map information of object AID-RID, encapsulate corresponding RID information and be forwarded to the GSR of broad sense Forwarding plane at data message head, by GSR route and be forwarded to the ASN at object terminal place.

As shown in Figure 2, main interface comprises the relevant interface of above-mentioned network identify label and position separation:

S1/D1 is the control signal/user data interface between terminal and ASN.S1 is the signaling interface between terminal and ASN, is mainly used in the message flow processing of access-in management, switching, authentication, charging and registration.D1 is the interface of data retransmission and reception between terminal and ASN.

For the terminal of compatible this architecture network, the data message form of D1 interface is:

two layers of header

source AID

object AID

data message payload.。。

S2/D2 is the interface between ASN, the handover management while being mainly used in switching and data retransmission.The transmission of handover management signaling when S2 is mainly used in switching, the transmission of RID updating message when change in location between Correspondent Node.Data retransmission when D2 is mainly used in switching between ASN.

D3 is the external interface of broad sense Forwarding plane (comprises the interface of ASN and GSR, and the interface of ILR/PTF and GSR), and the data message form of D3 interface is:

two layers of header

source RID

object RID

source AID

object AID

data message payload.。。

S4 is the signaling interface between ASN and mapping forward plane, is mainly used in inquiry and safeguards AID-RID map information.

D4m is the data retransmission interface between ASN and mapping forward plane, and the data message form of D4m interface is:

two layers of header

source RID

rIDi

source AID

object AID

data message payload.。。

Wherein, the corresponding source AID of source RID, RIDi is the routing address of ILR/PTF in the mapping forward plane being connected with ASN, this routing address is ASN configuration by system.

S5 is the interface between ILR/PTF in mapping forward plane, is mainly used in inquiry maintenance AID-RID map information, and routing iinformation is mutual.Wherein, at visited ILR(visited place ILR) with Home ILR(ownership place ILR) while being related to without direct connection, Broke ILR(relaying ILR) forward the signaling between visited ILR and Home ILR.

Wherein, what ILR processed is the signaling of chain of command, and what PTF processed is the data message of medium surface.The signaling of S4 interface is passed through visited ILR possibly, and Broke ILR just can be routed to Home ILR.And the forward-path of the data message of D4m interface passes through visited ILR too possibly, Broke ILR, is routed to Home ILR.In Fig. 2, D4m interface is directly linked Home ILR/PTF from ASN, is only example, is not intended to limit the present invention the routed path of the data message being forwarded by PTF.

To introduce the processing of terminal initiating communication below, in order to make statement more clear, describe terminal CN and terminal MN the other side's Correspondent Node each other taking communicating by letter as example of mobile node (MN) and terminal CN.

As shown in Figure 3, MN is to CN initiating communication, and sets up the process of communicating by letter with CN and comprise the following steps:

Step 301, MN is denoted as ASNm herein to the ASN(at place) to CN initiating communication, in the data message sending, source address is AIDm, the AID(that destination address is CN is denoted as AIDc herein);

Step 302, ASNm receives after the data message (message format is the form of D1 interface definition) that MN sends, according to the AID-RID map information in the AIDc inquiry local cache (cache) in data message, if find the map information of corresponding AIDc-RIDc, perform step 305, otherwise, execution step 303;

Step 303, if do not find AIDc-RIDc mapping in the map information of local cache, the form that ASNm changes data message into D4m interface definition by the form of D1 interface definition is (by RIDm corresponding to AIDm as source address, using the Route Distinguisher RIDi of ILR in the mapping plane being connected with this ASN as destination address, all be encapsulated in newly-increased header), be forwarded to mapping forward plane, and send the inquiry request of AIDc-RIDc map information to mapping forward plane;

Step 304a, mapping forward plane inquiry is received after the data message that ASNm sends, inquire AIDc-RIDc mapping, RIDc is encapsulated in to header (as increased RIDc routing iinformation in data message), and data message is become to D3 interface (replacing with RIDc by the RIDi in newly-increased header) from D4m interface format, be forwarded to broad sense Forwarding plane;

Step 304b, mapping forward plane returns to ASNm by the AIDc-RIDc mapping inquiring by map locating response message;

ASN receives after this response, the map information of AIDc-RIDc is wherein kept in local cache;

Step 305, if ASNm finds AIDc-RIDc mapping in the map information of local cache, the form that changes data message into D3 interface definition by the form of D1 interface definition is (by RIDm corresponding to AIDm as source address, using RIDc as destination address, all be encapsulated in newly-increased header), be forwarded to broad sense Forwarding plane;

Step 306, the ASN(that this data message is sent to CN place by broad sense Forwarding plane is denoted as ASNc herein);

Step 307, when ASNc receives the data message that mails to terminal CN, data message is carried out to decapsulation processing, peel off the newly-increased header of this data message, data message is become to the form of D1 interface definition from the form of D3 interface definition, then this data message is mail to terminal CN;

Simultaneously, source RID-AID mapping in learning data message,, if ASNc is in the time receiving the data message that mails to CN, map information in inquiry local cache, if also do not preserve the map information of the RID-AID of MN in local cache, according to the RID of MN in this data message and AID, the map information of MN is kept to this locality.Thereby ASNc, in the time receiving the data message of CN response, inquires about this map information, data message repeating to the broad sense Forwarding plane that the RIDm inquiring is encapsulated in to response forwards.

Step 308, CN is to MN response data message, and source address is AIDc, and destination address is AIDm;

For terminal CN, terminal MN is Correspondent Node, and the processing mode that sends to the data message of terminal MN from terminal CN is the same.

Step 309, ASNc receives after the data message of CN response, according to the AIDm-RIDm map information in the AIDm inquiry local cache (cache) in data message;

Step 310, ASNc inquires after AIDm-RIDm mapping, encapsulates RIDm and send to broad sense Forwarding plane in data message;

Step 311, this data message is sent to ASNm by broad sense Forwarding plane;

Step 312, ASNm carries out decapsulation processing to data message, peels off the newly-increased header of this data message, then this data message is mail to MN.

In above-mentioned flow process, broad sense Forwarding plane is specifically completed the forwarding of data message by GSR.And in the case of not finding corresponding AIDc-RIDc map entry, ASN is the ILR that the inquiry request of AIDc-RIDc map information is sent to user ascription area on mapping forward plane, is returned to the map information of AIDc-RIDc by this ILR; Data message is the PTF that sends to user ascription area on mapping forward plane, is completed conversion and the forwarding of data message form by this PTF.Particularly, ASN first sends to inquiry request connected Vistited ILR, in the time that Vistited ILR and Home ILR are not same ILR, by Vistited ILR forwarding messages between ASN and Home ILR, in the time directly not connecting between Vistited ILR and Home ILR, also need the relaying by Broke ILR.Similarly, ASN first sends to data message connected Vistited PTF, when Vistited PTF and Home PTF are not same PTF, by Vistited PTF forwarding messages between ASN and Home PTF, while directly connection between Vistited PTF and Home PTF, also need to be by Broke PTF relaying.

In another embodiment of the present invention, ASN also can only inquire about the map information of AIDc-RIDc to mapping forward plane, and the data message of receiving is carried out to buffer memory, inquiring after the map information of AIDc-RIDc, the form that again data message of buffer memory is changed into D3 interface definition by the form of D1 interface definition, is forwarded to broad sense Forwarding plane.

Concerning another embodiment of the present invention, ASN also can adopt in another way the data message that will send to Correspondent Node of receiving is carried out to Reseal: the source address AIDm in heading is replaced with to RIDm, destination address AIDc replaces with RIDc, and AIDm and AIDc are encapsulated in the payload of data message.Correspondingly, when ASN receives the data message that will send to terminal MN, need to from the payload of data message, take out AIDm and AIDc, and the source address RIDm in heading is replaced with to AIDm, destination address RIDc replaces with AIDc, reverts to the form of D1 interface definition, then issues Correspondent Node.

The above-mentioned forwarding process of data message while being initiating communication, below still taking MN as example, registration and position update flow to terminal are introduced.As shown in Figure 4, comprising:

Step 401, MN, in the time of start, initiates register flow path by ASNm;

Step 402, ASNm initiates registration request to the ILR in mapping forward plane, in this registration request, comprises AIDm;

Step 403, ILR processes the registration request of MN, and preserves the map information of AIDm-RIDm in log-on message;

Step 404, after this, due to the mobility of MN, its identity position map information also will change along with the variation of position; In the time that the position of MN changes, initiate the flow process of registration renewal map information to mapping forward plane by ASNm;

Step 404, ASNm is that MN distributes after new RID, initiates updating message to ILR, carries the AID of MN and new RID thereof in updating message;

Step 405, ILR receives after updating message, upgrades AIDm-RIDm entry corresponding to MN, for the ASN inquiry at the Correspondent Node place in subsequent communications process.

Thus, in ILR, preserve the map information of the real-time AID-RID of all terminals in network.

In addition, a kind of retransmission method of information is also provided in the embodiment of the present invention and has applied the access node of this retransmission method, this retransmission method is applied to identify label and locator separation network, described identify label and locator separation network at least include Access Network and backbone network, wherein backbone network at least includes mapping forward plane and broad sense Forwarding plane, and this retransmission method comprises:

The information that is received from first node and is sent to Section Point via Access Network, wherein this information at least includes the identify label (AID) of Section Point;

According to the station location marker (RID) of the identify label of described Section Point (AID) inquiry Section Point, in the time that primary importance cannot be inquired about, initiate station location marker (RID) inquiry request of Section Point and forwarding information to mapping forward plane to mapping forward plane, the station location marker (RID) of identify label (AID) for described mapping forward plane based on Section Point inquiry Section Point, and station location marker (RID) based on Section Point is sent to Section Point via broad sense Forwarding plane by described information.

A kind of retransmission method of information is also provided in the embodiment of the present invention and has applied the access node of this retransmission method, this retransmission method is applied to identify label and locator separation network, described identify label and locator separation network at least include Access Network and backbone network, wherein backbone network at least includes mapping forward plane and broad sense Forwarding plane, and this retransmission method comprises:

The first information that is sent to Section Point from ASN receiving position mark (RID) inquiry request and first node, wherein belonging positions mark (RID) inquiry request at least includes the identify label (AID) of Section Point;

According to the station location marker (RID) of the identify label of described Section Point (AID) inquiry Section Point, and the station location marker of the described Section Point inquiring (RID) is packaged in described information, send described information to broad sense Forwarding plane, described information is sent to Section Point by the station location marker (RID) for broad sense Forwarding plane based on Section Point.

The present invention also provides a kind of retransmission method of information, is applied in the network architecture that comprises Access Network and backbone network, and wherein said method comprises:

The first access node accepts to be sent to from first node the first information of Section Point via Access Network, wherein this first information at least includes the identify label (AID) of Section Point;

The first access node is according to the station location marker (RID) of the identify label of described Section Point (AID) inquiry Section Point, in the time that the first access node primary importance cannot be inquired about, initiate station location marker (RID) inquiry request of Section Point to the second place, and obtain the station location marker (RID) of Section Point from the second place;

Accept in the time that first node is sent to the second information of Section Point via Access Network at the first access node, this second information at least includes the identify label (AID) of Section Point, in primary importance, the identify label based on Section Point (AID) inquires the station location marker (RID) of the Section Point obtaining from the second place to the first access node, and according to the station location marker of described Section Point (RID), described the second information is sent to Section Point.

Wherein, the second place is positioned at outside the first access node or the second place is positioned at described backbone network.

In addition, the present invention also provides a kind of method of routing configuration, and network is divided into multiple territories, and the routing node in network is divided into interlink node between territory interior nodes and territory, wherein:

Between each described territory, interlink node is set up, is preserved, safeguards the routing iinformation in all territories, routing table between formative region, the routing iinformation that the content of storing in described inter-domain routing table is each territory;

The routing iinformation of all users in this territory is set up, preserved, safeguards to each territory interior nodes, formative region internal routing table, and the content of storing in the internal routing table of described territory is the identification information of each node in this territory.

Further, receiving after route requests, by inquiring about described inter-domain routing table, be addressed to the corresponding home domain of route destination address in described route requests;

Then by the territory internal routing table of the described home domain of inquiry, in described home domain, be addressed to the corresponding home node of described route destination address.

Wherein, in described route destination address, comprise home domain information and node identification information.

In the time increasing new territory in described network, between the territory in this newly-increased territory, interlink node will spread its routing iinformation to interlink node between other all territories, and between described other territory, interlink node preserves the routing iinformation in described newly-increased territory into described inter-domain routing table.

In the time increasing new routing node in described network, this newly-increased routing node will spread its node identification information in its home domain, and described node identification information is preserved the territory internal routing table into this territory by other territory interior nodes in its home domain.

Further, the routing forwarding process of described route requests specifically comprises:

Receive after described route requests, according to inter-domain routing table described in the described home domain information inquiry comprising in route destination address wherein, if the corresponding home domain of described route destination address is not this territory, described route requests is forwarded to corresponding home domain, then inquires about the territory internal routing table of corresponding home domain; Otherwise, inquire about the territory internal routing table in this territory, described route requests is forwarded to corresponding home node.

Wherein, the division in described territory, by runing strategy decision, is divided into multiple territories according to carrier network, enterprise network or countries and regions by described network.

In addition, the present invention also provides the method for configuring route in a kind of identify label and locator separation network, and as shown in Figure 5, mapping forward plane is to be made up of multiple territories, between territory and territory, has annexation.The setting in mapping territory, by runing strategy decision, can be that a carrier network forms a mapping territory, can be also that an enterprise network forms a mapping territory, can also be to form a mapping territory by countries and regions.Forming each node of mapping forward plane is ILR/PTF, is divided in territory interconnected ILR/PTF node between ILR/PTF node and territory.Wherein, between each territory, the routing iinformation in all mappings territory is set up, preserved, safeguards to interconnected ILR/PTF node, routing table between formative region, by routing table between inquiry field, terminal use sends to the signaling of mapping forward plane or data message and can be addressed to this terminal use's home domain; In each territory, all users' in this territory routing table information is set up, preserved, safeguards to ILR/PTF node, formative region internal routing table, by inquiry field internal routing table, the signaling of terminal use's Delivered mapping forward plane home domain or data message can be addressed to the ownership ILR/PTF in this terminal use's home domain.

Mapping forward plane is by data configuration or synchronous mode routing table and the territory internal routing table between formative region respectively of route, and concrete processing is as follows:

The routing iinformation exchanging between territory, the message that need to ensure AID mark can be routed to home domain, in AID, should comprise home domain information (as operator's code etc.), the content of inter-domain routing table entry stores is exactly the home domain information comprising in AID, mapping forward plane is made up of multiple territories, and the scale of inter-domain routing table is suitable with the quantity of the interior dividing domain of mapping plane;

In territory, the routing iinformation of exchange need to ensure can uniquely hit map entry by AID, the content of territory internal routing table entry storage is exactly all AID identification informations (as user code) in this territory, and the number of users of the scale of territory internal routing table and the management of this territory is suitable.

Mapping forward plane is by the division in above multiple territories, and the configuration of routing iinformation or synchronous, make to send to the signalings such as map locating request in mapping forward plane, and data message can be routed to ILR/PTF(ownership ILR/PTF corresponding to object terminal) node processes.

With terminal MN, terminal CN is the function mode of example explanation mapping forward plane below.The AID of terminal CN is GID(home domain information) identification information in+LID(territory), wherein GID distinguishes different home domain, different terminal use in LID difference home domain.In conjunction with Fig. 6, terminal use CN is that home domain is territory A, and ownership ILR/PTF is ILR/PTF2.As shown in Figure 5, mapping territory A, mapping territory B, has annexation between mapping territory C.When mapping, territory A adds after network, and between its territory, interconnected ILR/PTF6 is by other the interconnected ILR/PTF diffusion GID to mapping forward plane, and other interconnected ILR/PTF will preserve this inter-domain routing information, routing table between formative region.

The ownership ILR/PTF of terminal CN is ILR/PTF2, and CN is after ILR/PTF2 opens an account, and ILR/PTF2 will spread the routing iinformation LID of CN in mapping territory A, and other ILR/PTF node in mapping territory A is preserved these routing iinformations, formative region internal routing table.

Below in conjunction with Fig. 6, be mapped as example with the AIDc-RIDc of terminal MN inquiry terminal CN the routing procedure of mapping forward plane is described further.

ASNm initiates the map locating message of MN inquiry CN, the AID that the destination address of map locating message is CN to mapping forward plane.ILR/PTF1 receives signaling or data message, inquire about the territory internal routing table of this territory (mapping territory C), find that CN is not this territory user terminal, signaling is forwarded to interconnected ILR/PTF3 between territory, between territory, interconnected ILR/PTF3 is according to routing table between the GID inquiry field of CN, find route and point to ILR/PTF4, signaling is forwarded to ILR/PTF4; ILR/PTF4 carries out after the querying flow identical with ILR/PTF1, by ILR/PTF5, signaling is sent to interconnected ILR/PTF6 between the territory of territory A; It is this territory user terminal that ILR/PTF6 inquires CN, and by inquiry field internal routing table, message is sent to ILR/PTF2 the most at last.

More than described the routing forwarding process of map locating demand signalling in mapping forward plane, other signaling in mapping forward plane and the routing mode of data message and the process of above signaling are carried out identical flow process.

Claims (7)

1. the method for configuring route in identify label and locator separation network, is characterized in that, mapping forward plane is divided into multiple territories, and the ILR/PTF in described mapping forward plane is divided into interlink node between territory interior nodes and territory,

Between each described territory, interlink node is set up, is preserved, safeguards the routing iinformation in all territories, routing table between formative region, the routing iinformation that the content of storing in described inter-domain routing table is each territory;

The routing iinformation of all terminals in this territory is set up, preserved, safeguards to each described territory interior nodes, formative region internal routing table, and the content of storing in the internal routing table of described territory is the identification information of each node in this territory.

2. the method for claim 1, is characterized in that,

Receiving after the route requests that comprises object terminal AID of terminal transmission, by inquiring about described inter-domain routing table, be addressed to the home domain of described object terminal;

Then pass through the territory internal routing table of the home domain of the described object terminal of inquiry, in the home domain of described object terminal, be addressed to the home node of described object terminal.

3. method as claimed in claim 2, is characterized in that,

In described route destination address, comprise home domain information and node identification information.

4. the method as described in any one of claims 1 to 3, is characterized in that,

In the time increasing new territory in described network, between the territory in this newly-increased territory, interlink node will spread its routing iinformation to interlink node between other all territories, and between described other territory, interlink node preserves the routing iinformation in described newly-increased territory into described inter-domain routing table.

5. the method as described in any one of claims 1 to 3, is characterized in that,

In the time increasing new routing node in described network, this newly-increased routing node will spread its node identification information in its home domain, and described node identification information is preserved the territory internal routing table into this territory by other territory interior nodes in its home domain.

6. method as claimed in claim 2, is characterized in that,

The routing forwarding process of described route requests specifically comprises:

Receive after described route requests, according to inter-domain routing table described in the described home domain information inquiry comprising in route destination address wherein, if the corresponding home domain of described route destination address is not this territory, described route requests is forwarded to corresponding home domain, then inquires about the territory internal routing table of corresponding home domain; Otherwise, inquire about the territory internal routing table in this territory, described route requests is forwarded to corresponding home node.

7. the method as described in claim 1,2,3 or 6, is characterized in that,

The division in described territory, by runing strategy decision, is divided into multiple territories according to carrier network, enterprise network or countries and regions by described network.