CN102056236A

CN102056236A - Communication network implemented based on Wimax network structure and terminal access method

Info

Publication number: CN102056236A
Application number: CN2009102084693A
Authority: CN
Inventors: 霍玉臻; 吴强; 符涛
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2009-11-01
Filing date: 2009-11-01
Publication date: 2011-05-11
Anticipated expiration: 2029-11-01
Also published as: WO2011050679A1; CN102056236B

Abstract

The invention discloses a communication network implemented based on a Wimax (Worldwide Interoperability for Microwave Access) network structure and a terminal access method. The system comprises an access business network and a connection business network in the Wimax network structure, the access business network comprises a base station and an access gateway, the connection business network comprises an ILCR, the communication network further comprises a packet data network, the access network is used for providing access service and control for a terminal, maintaining connection information between the terminal and a communication opposite end, and implementing the cross-access network switching and the cross-ILCR switching of the terminal in cooperation with other access networks; and the ILCR is used for maintaining session connection of the terminal, maintaining mapping information of the terminal and the communication opposite end, and implementing the routing and forwarding of data messages. The invention further provides a method for the access of the terminal to the communication network. In the structural deployment of the invention, the requirement for being compatible with the terminal and upper business are taken into consideration, only network-side equipment needs to be updated, and the application scene of the terminal can not be changed.

Description

Communication network and terminal access method based on the realization of the Wimax network architecture

Technical field

The present invention relates to communication technical field, relate in particular to a kind of communication network of realizing based on the Wimax network architecture.

Background technology

In traditional TCP/IP network environment, IP is that internet (Internet) provides routing function, and it has all distributed logical address for all nodes (comprising main frame and router), i.e. each port of IP address, and every main frame all distributes an IP address.The IP address of the All hosts on IP address packet includes network prefix and the host machine part, same link has identical network prefix and different host machine part usually.This makes IP partly to carry out Route Selection according to the network prefix of the IP address of destination node, thereby makes the router order preserve a simple network prefix route, and needn't be that every main frame is preserved an independent route.In this case, owing to adopted the network prefix route, therefore when node did not change its IP address from a link switchover to another link, this node then can not receive data message on new link, thereby also just can't communicate with other nodes.

There is following deficiency in the existing network technology of using ICP/IP protocol:

Adopt the mobility of the mode support terminal of fixed anchor point, as, adopting the GTP agreement in the LTE network, regulation gateway PGW is as the mobile anchor point of terminal; Adopt Mobile IP agreement in the Wimax network, home agent (HA:Home Agent) as anchor point.The introducing of fixed anchor point has brought the circuitous problem of packet path, has increased the weight of transmission delay and bandwidth waste.And the main frame that the route optimization process of MIPV6 need participate in communicating by letter is supported the MIPV6 agreement, disposes difficulty.

The IP address has dual-use function: both as the station location marker of communication terminal host network interface in network topology of network layer, again as the identify label of transport layer host network interface.When the IP address of main frame changed, not only route will change, and the identify label of communication terminal main frame also can change, and can cause routing overhead more and more heavier like this, and the variation of host identification can cause using and the interruption that is connected.Prior art identify label and position split-frame HIP, LISP etc. are a kind of brand-new network frames that makes up for this deficiency that overcomes the existing network technology.Host Based HIP agreement etc. need be done bigger change to terminal and upper-layer service, disposes difficulty; Move simultaneously at the communication two ends, the position update stage needs network to participate in the maintain communications link, otherwise the message dropping problem will take place.Based on network LISP agreement is that the subsidiary problem that solves in back is separated in the identity position for mobility and many caves property, does not also have concrete scheme and implementation method now.

Fig. 1 is the network architecture of existing Wimax system, as shown in the figure, the Wimax system of prior art generally is made up of three parts: terminal, Wimax access business network (Wimax Access Service Network, abbreviation W-ASN) is connected business network (Wimax Connect Service Network is called for short W-CSN) with Wimax.

W-ASN mainly carries out following function: two layers (L2) that finishes the Wimax terminal connect, transmit AAA message to the network selecting of H-CSN (ownership CSN), NSP and discovery, be that three layers (L3) of Wimax terminal are connected tunnel maintenance between relaying, RRM, W-ASN and the W-CSN is provided.Under the scene that moves, W-ASN also needs to support following function: the mobile management (W-CSN Anchored MM) of the mobile management of W-ASN grappling (W-ASN Anchored MM), W-CSN grappling, paging and idle pulley (Idle Mode) operation.

W-ASN also is used for managing I EEE 802.16 air interfaces, for the Wimax terminal use provides wireless access.W-ASN is made up of a base station (Base Station is called for short BS) and an IAD (W-ASN Gateway is called for short AGW) at least, can comprise single AGW or a plurality of AGW.W-ASN is in R1 reference point and MS (Mobile Station, mobile radio station) intercommunication, in R3 reference point and W-CSN intercommunication, in R4 reference point and another W-ASN intercommunication.The operator of management W-ASN is called NAP (Network Access Provider, network insertion operator).

W-CSN is the combination of a cover network function, and W-CSN can be made up of HA (home agent of mobile IP), AAA agency or server (AAA Proxy/Server), accounting server, interconnecting gateway equipment etc.As mentioned above, the operator of management W-CSN is called NSP (Network Service Provider, network service provider).

W-CSN mainly provides following function: the IP address assignment of end-user session connection, terminal, Internet access, AAA agency or server, terminal use's strategy and tunnel maintenance, terminal use's charging and clearing between permission control, W-ASN and the W-CSN, roaming, the mobile management between W-CSN and the Wimax business between W-CSN.

Use the existing mobile communications network of ICP/IP protocol, comprise the Wimax system, have the defective of the network technology of above-mentioned existing application ICP/IP protocol equally.

The solution of separating with the position about identify label in the prior art mainly contains two kinds, a kind of realization that is based on main frame, another kind is based on the realization of router, there are relevant multiple technologies to support again in every kind of realization, terminal use's identify label (AID) does not change in moving process in these schemes, realizes the route and the forwarding of data message according to the position otherwise allocated station location marker of terminal.But, realize having the communication network of identify label and position separation architecture for how based on the Wimax system, corresponding implementation is not all proposed.

Summary of the invention

At the defective of above prior art, the technical problem to be solved in the present invention provides a kind of communication network of realizing based on the Wimax network architecture, can realize that the identify label of based on network user terminal separates with the position.

The another technical problem that the present invention will solve provides a kind of communication network of realizing based on the Wimax network architecture, can support the application scenarios of portable terminal, efficiently solves the alternate route problem under this scene.

The another technical problem that the present invention will solve provides a kind of communication network of realizing based on the Wimax network architecture, in the deployment of this framework, consider the demand of compatible terminal, compatible upper-layer service, only need the upgrade of network side apparatus, the compatible application scenarios of not changing terminal.

The another technical problem that the present invention will solve provides a kind of communication network of realizing based on the Wimax network architecture, can realize that when terminal inserts this communication network identify label separates with the position.

The another technical problem that the present invention will solve provides a kind of communication network of realizing based on the Wimax network architecture, can realize that the identify label when terminal is communicated by letter in communication network separates with the position.

The another technical problem that the present invention will solve provides a kind of communication network of realizing based on the Wimax network architecture, can realize that terminal identify label during off-line in communication network separates with the position.

The another technical problem that the present invention will solve provides a kind of communication network of realizing based on the Wimax network architecture, can realize that the identify label when terminal is switched in communication network separates with the position.

In order to address the above problem, the invention provides the communication network that a kind of identify label (AID) that realizes based on the Wimax network architecture separates with the position, comprise in the Wimax network architecture access business network be connected business network, comprise base station and IAD in the described access business network, it is characterized in that, comprise identity position core router (ILCR) and identity location register (ILR) in the described connection business network, this communication network also comprises the broad sense Forwarding plane that is used for opsition dependent sign (RID) route and transmits data message between ILCR, wherein:

Described IAD is used to terminal that access service and control are provided, and the link information of maintenance terminal and Correspondent Node cooperates the realization terminal to span into gateway and the switching of striding ILCR with other IADs;

Described ILCR is used for the session connection of maintenance terminal, for terminal distribution is pointed to the RID of this ILCR, the AID-RID map information of maintenance terminal and Correspondent Node is to the RID of ILR inquiry terminal, realize the route and the forwarding of data message, and cooperate the realization terminal to stride the switching of ILCR with other ILCR;

Described ILR is used to receive described IAD or the ILCR registration and unregistration request to this ILR home subscriber terminal, safeguard the AID-RID map information of home subscriber terminal, and receive query requests to terminal RID, the RID of this terminal AID correspondence in the request is returned to query requests side.

Further, above-mentioned communication network also can have following characteristics: described IAD comprises: connect maintenance module and data forwarding module, wherein:

Described connection maintenance module is used to preserve the link information of terminal and Correspondent Node, comprises the corresponding relation of terminal AID and Correspondent Node AID; Know behind the terminal off-line or communicate by letter and stop the link information of back this terminal of deletion and Correspondent Node with Correspondent Node; Know the Correspondent Node off-line or cut out or delete when stopping the back link information of this Correspondent Node and terminal with terminal communication;

Described processed offline module is used for when determining the terminal off-line that inserts, and notice connects maintenance module; And when definite Correspondent Node off-line, notice connection maintenance module;

Described data forwarding module is used for carrying out data message forwarding between base station and ILCR.

Further, above-mentioned communication network also can have following characteristics:

Processed offline module in the described IAD also is used for when determining the terminal off-line that inserts, this terminal off-line of IAD of notifying described Correspondent Node to insert, and when receiving the terminal off-line notice that the opposite end IAD sends, determine this terminal off-line as Correspondent Node;

Processed offline module in the described IAD is according to connecting the AID that the described link information of preserving in the maintenance module finds these all Correspondent Nodes of terminal, according to the AID of described Correspondent Node local or inquire the IAD of Correspondent Node access to Correspondent Node ownership place aaa server.

Further, above-mentioned communication network also can have following characteristics: described ILCR comprises that the tunnel sets up module, mapping management module and packet forwarding module, wherein:

Described tunnel is set up module and is used to set up tunnel between IAD and the ILCR, is terminal distribution RID, and AID and this RID of terminal sent to the mapping management module;

Described mapping management module is used for the AID-RID map information of buffer memory terminal and Correspondent Node and safeguards;

Described packet forwarding module, after being used to receive that terminal and Correspondent Node do not belong to the uplink data messages of same ILCR (promptly not being linked into same ILCR), the RID of the Correspondent Node that will inquire from mapping management module or Correspondent Node ownership place ILR and the RID of terminal are encapsulated in the data message that comprises terminal AID and Correspondent Node AID together, through broad sense Forwarding plane route and be forwarded to opposite end ILCR; And, send to terminal after peelling off RID wherein with the downlink data message decapsulation that the broad sense Forwarding plane is sent.

Also comprise the Register Cancel module, be used for after receiving terminal AID and being the RID of this terminal distribution, asking this terminal attaching ground ILR this terminal RID to be registered the AID of carried terminal and RID; After knowing the terminal off-line, ask this terminal attaching ground ILR to nullify the RID of this terminal;

Described Register Cancel module is arranged in IAD, and module is set up also with the AID of terminal with send to this Register Cancel module of IAD for terminal distribution RID in the tunnel among the described ILCR; Perhaps, described Register Cancel module is arranged in ILCR, and module is set up also with the AID of terminal with send to this Register Cancel module of this ILCR for terminal distribution RID in the tunnel among the described ILCR.

Described ILCR also comprises the processed offline module, is used for when determining the terminal off-line that inserts notice mapping management module; When definite Correspondent Node off-line, notice mapping management module;

Mapping management module among the described ILCR also is used for when knowing the terminal off-line or cutting out, delete the AID-RID map information of this terminal, delete the AID-RID map information that does not have the Correspondent Node of correspondence in this terminal communication opposite end with the other-end that inserts this ILCR; Know terminal communicate by letter with Correspondent Node stop after, and this Correspondent Node do not have correspondence with the other-end that inserts this ILCR, then deletes the AID-RID map information of this Correspondent Node; The AID-RID information of knowing the Correspondent Node off-line or deleting this Correspondent Node when stopping with terminal communication.

Further, above-mentioned communication network also can have following characteristics: described packet forwarding module comprises first retransmission unit and second retransmission unit, wherein:

First retransmission unit be used for receive that the base station sends comprise terminal AID and Correspondent Node AID and terminal and Correspondent Node and do not belong to the uplink data messages of same ILCR after, as inquire the RID of Correspondent Node in the mapping management module, the RID of this terminal and Correspondent Node is encapsulated in the data message as source, destination address, through broad sense Forwarding plane route and be forwarded to opposite end ILCR; As the RID of inquiry less than Correspondent Node, to the RID of Correspondent Node ownership place ILR query communication opposite end, the AID-RID of the Correspondent Node that inquires is saved in the mapping management module;

Second retransmission unit is used for downlink data message decapsulation that the broad sense Forwarding plane of receiving is sent, peel off RID wherein after, mail to this terminal by ILCR with being connected of this terminal; And whether the AID-RID map information of judging Correspondent Node in the described data message exist in the mapping management module, then is saved in the mapping management module as not existing.

Described connection business network also comprises packet forward function (PTF); After described first retransmission unit was received the uplink data messages of sending the base station, as inquire about the RID less than Correspondent Node in the mapping management module, RID was encapsulated in the data message as source address with this terminal, is forwarded to PTF; Described PTF is used for after receiving the data message that ILCR or other PTF send to, and after finding corresponding RID and be encapsulated in heading as destination address according to Correspondent Node AID in the data message, this data message is sent to opposite end ILCR through the broad sense Forwarding plane; Perhaps

After described first retransmission unit is received the uplink data messages of sending the base station, as inquire about RID in the mapping management module less than Correspondent Node, the described data message of elder generation's buffer memory, after inquiring the RID of Correspondent Node, again the RID of this terminal and Correspondent Node is encapsulated in the data message as source, destination address, through broad sense Forwarding plane route and be forwarded to opposite end ILCR.

Described IAD also comprises handover module and grappling datapath function (DPF) module, and described handover module is used for the control of the switching that terminal moves to another grappling DPF module or ILCR when having Correspondent Node coverage triggers, comprising:

The described unit that cuts out is used to realize control that terminal is cut out, this terminal of notice ILCR is switched, send to the incision IAD with connecting this terminal of maintenance module preservation and the link information of Correspondent Node, the data message forwarding of receiving between transfer period that sends to this terminal is to the incision IAD, and terminal cuts out the back notice and connects maintenance module;

Described incision unit is used to realize the control to the terminal incision, is saved in the link information of Correspondent Node and is connected maintenance module cutting out this terminal that IAD sends;

Described connection maintenance module also is used for knowing that terminal cuts out the link information of back this terminal of deletion and Correspondent Node.

Described ILCR also comprises the switching controls module, is used for terminal moves to the switching that triggers another ILCR coverage when having Correspondent Node control, comprising:

Cut out control unit, be used to realize control that terminal is cut out, the incision ILCR that moves to terminal sends handoff request, and the data message forwarding of receiving between transfer period that sends to this terminal is given incision ILCR, cuts out back notice mapping management module in this terminal;

The incision control unit is used to realize the control to the terminal incision, for terminal distribution is pointed to the RID of this ILCR and AID and this RID of this terminal sent to the mapping management module, or sends to mapping management module and IAD; And, carry the AID-RID map information of this terminal to opposite end ILCR transmission terminal RID update notification;

Described mapping management module is managed together to the Correspondent Node of all terminals of inserting this ILCR, receive the terminal RID update notification of sending the opposite end after, upgrade the AID-RID map information of local this terminal of preserving.

When described incision control unit sends terminal RID update notification to opposite end ILCR, find the AID of these all Correspondent Nodes of terminal earlier to the connection maintenance module of IAD according to the AID of this terminal, arrive the RID of mapping management module searches then, send terminal RID update notification to opposite end ILCR according to the RID that finds to described Correspondent Node; Perhaps

The incision control unit of described ILCR also is used for sending terminal RID update notification to the IAD of the same side, the incision unit of described IAD also is used for terminal RID update notification is sent to the opposite end IAD, and is forwarded to ILCR after receiving the terminal RID update notification that the opposite end IAD transmits.

After data forwarding module in the described IAD was received data message, whether terminal AID had been kept at the corresponding relation of Correspondent Node AID and has been connected maintenance module in the judgment data message, connected in the maintenance module as not preserving then to add to; Perhaps

After packet forwarding module among the described ILCR was received data message, whether terminal AID had been kept at the corresponding relation of Correspondent Node AID and has been connected maintenance module in the judgment data message, preserved as not preserving the connection maintenance module that then is sent to IAD.

Described ILR preserves or upgrades the AID-RID map information of this terminal after receiving the register requirement of home subscriber terminal, it is invalid to receive after the de-registration request of home subscriber terminal the AID-RID map information of this terminal being deleted or is changed to; If receive registration, de-registration request, then be transmitted to this terminal attaching ground ILR and handle the non-attribution user terminal.

Described ILCR is a function of having gathered home agent in the Wimax network architecture and/or core router, and has expanded and realized that identify label separates with the position that required new function obtains; Described connection business network also comprises the original network element that is used for authentication in the Wimax network architecture;

Described IAD is on the basis of the functional entity that IAD has in the Wimax network architecture, expanded and realized that identify label separates with the position that required new functional module obtains, the functional entity that IAD had in the described Wimax network architecture comprises grappling datapath function (DPF) module and authentication device.

Tunnel among the described ILCR is set up module and is adopted the mode of dynamically setting up the tunnel, and the tunnel based on terminal is set up in the tunnel in the terminal access procedure between IAD and ILCR.

In order to solve the problems of the technologies described above, the present invention provides second kind of communication network that the identify label (AID) that realizes based on the Wimax network architecture separates with the position again, comprise in the Wimax network architecture access business network be connected business network, comprise base station and IAD in the described access business network, it is characterized in that, comprise identity position core router (ILCR) and identity location register (ILR) in the described connection business network, this communication network also comprises the broad sense Forwarding plane that is used for opsition dependent sign (RID) route and transmits data message between ILCR, wherein:

Described ILCR is used to terminal distribution to point to the RID of this ILCR, RID to the ILR registration of terminal attaching ground, cancellation and inquiry terminal, the link information of maintenance terminal and Correspondent Node, the session connection of maintenance terminal, the AID-RID map information of maintenance terminal and Correspondent Node, realize the route and the forwarding of data message, and cooperate the realization terminal to stride the switching of ILCR with other ILCR;

Described ILR is used to receive the registration and unregistration request to this ILR home subscriber terminal, safeguards the AID-RID map information of home subscriber terminal, and receives the query requests to terminal RID, and the RID of this terminal AID correspondence in the request is returned to query requests side.

Further, above-mentioned communication network also can have following characteristics: described ILCR comprises that the tunnel sets up module, Register Cancel module, mapping management module and packet forwarding module:

Described tunnel is set up module and is used to set up tunnel between IAD and the ILCR, is terminal distribution RID, and AID and this RID of terminal sent to mapping management module and Register Cancel module;

Described Register Cancel module is used for asking this terminal attaching ground ILR this terminal RID to be registered the AID of carried terminal and RID after receiving terminal AID and being the RID of this terminal distribution; After knowing the terminal off-line, ask this terminal attaching ground ILR to nullify the RID of this terminal;

Described packet forwarding module, after being used to receive that terminal and Correspondent Node do not belong to the uplink data messages of same ILCR, the RID of the Correspondent Node that will inquire from mapping management module or Correspondent Node ownership place ILR and the RID of terminal are encapsulated in the data message that comprises terminal AID and Correspondent Node AID together, through broad sense Forwarding plane route and be forwarded to opposite end ILCR; And, send to terminal after peelling off RID wherein with the downlink data message decapsulation.

Further, above-mentioned communication network also can have following characteristics: described ILCR also comprises connection maintenance module, processed offline module and mapping management module, wherein:

Described connection maintenance module, the link information that is used to preserve terminal and Correspondent Node; Know the terminal off-line or shift out the back or communicate by letter and stop the link information of back this terminal of deletion and Correspondent Node with Correspondent Node; After knowing the Correspondent Node off-line or stopping, delete the link information of this Correspondent Node and terminal with terminal communication;

Described processed offline module is used for when determining the terminal off-line that inserts, and notifies Register Cancel module, mapping management module and is connected maintenance module; When definite Correspondent Node off-line, notice mapping management module and be connected maintenance module;

Described mapping management module also is used for deleting the AID-RID map information that does not have the Correspondent Node of correspondence in this terminal communication opposite end with the other-end that inserts this ILCR knowing that terminal cuts out or during off-line, deleting the AID-RID map information of this terminal; Know terminal communicate by letter with Correspondent Node stop after, and this Correspondent Node do not have correspondence with the other-end that inserts this ILCR, then deletes the AID-RID map information of this Correspondent Node; Know the Correspondent Node off-line or when stopping, the AID-RID information of deleting this Correspondent Node with terminal communication.

Described processed offline module is when definite Correspondent Node off-line, also according to terminal AID to connecting the AID that finds these all Correspondent Nodes of terminal in the maintenance module, inquire the RID of all Correspondent Nodes to the mapping management module again, send terminal off-line notice to opposite end ILCR then;

Described processed offline module is determined this terminal off-line as Correspondent Node after receiving the terminal off-line notice that opposite end ILCR sends.

First retransmission unit be used for receive that IAD sends comprise terminal AID and Correspondent Node AID and this terminal and Correspondent Node and do not belong to the uplink data messages of same ILCR after, as inquire the RID of Correspondent Node in the mapping management module, the RID of this terminal and Correspondent Node is encapsulated in the data message as source, destination address, through broad sense Forwarding plane route and be forwarded to opposite end ILCR; As the RID of inquiry, to the RID of Correspondent Node ownership place ILR query communication opposite end less than Correspondent Node;

Second retransmission unit is used for downlink data message decapsulation that the broad sense Forwarding plane of receiving is sent, peels off RID wherein, mails to this terminal by ILCR with being connected of this terminal.

Described connection business network also comprises packet forward function (PTF); After described first retransmission unit receives that the terminal that sends the base station and Correspondent Node do not belong to the uplink data messages of same ILCR, as inquire about RID in the mapping management module less than Correspondent Node, RID is encapsulated in the data message as source address with this terminal, is forwarded to this Correspondent Node ownership place PTF; Described PTF is used for after receiving the data message that ILCR or other PTF send to, and after finding corresponding RID and be encapsulated in heading as destination address according to Correspondent Node AID in the data message, this data message is sent to opposite end ILCR through the broad sense Forwarding plane; Perhaps

After described first retransmission unit receives that the terminal that sends the base station and Correspondent Node do not belong to the uplink data messages of same ILCR, as inquire about RID in the mapping management module less than Correspondent Node, the described data message of elder generation's buffer memory, after inquiring the RID of Correspondent Node, again the RID of this terminal and Correspondent Node is encapsulated in the data message as source, destination address, through broad sense Forwarding plane route and be forwarded to opposite end ILCR.

The AID-RID map information that described first retransmission unit also is used for the Correspondent Node that will inquire is saved in the mapping management module;

Described second retransmission unit judges also whether the AID-RID map information of Correspondent Node in the described data message exists after receiving the downlink data message that the broad sense Forwarding plane sends in the mapping management module, then be saved in the mapping management module as not existing;

Described first retransmission unit and second retransmission unit judge also whether terminal AID has been kept at the corresponding relation of Correspondent Node AID in the data message of receiving and be connected in the maintenance module, as do not have, and is saved in to connect in the maintenance module.

Further, above-mentioned communication network also can have following characteristics: also comprise the switching controls module, this switching controls module comprise again cut out control unit and the incision control unit, wherein:

The described control unit that cuts out is used to realize control that terminal is cut out, when terminal moves, determine the incision ILCR that terminal will move to according to the destination of moving, move to finish back notice mapping management module and to be connected this terminal of maintenance module and cut out, the data message forwarding of receiving between transfer period that mails to this terminal arrives cuts ILCR;

Described incision control unit, be used to realize control to the terminal incision,,, AID and this RID of this terminal sent to the Register Cancel module and be saved in the mapping management module when another ILCR moves to the coverage of this ILCR in terminal for terminal distribution is pointed to the RID of this ILCR;

Described incision control unit also is used to inquire about the positional information of opposite end ILCR, sends terminal RID update notification to opposite end ILCR, carries the AID-RID map information of this terminal; During inquiry, find earlier the AID of all Correspondent Nodes in the link information that connects terminal that maintenance module preserves and Correspondent Node according to terminal AID, find corresponding RID with the AID that finds in the Correspondent Node AID-RID map information of mapping management module preservation again, the RID that finds is the positional information of opposite end ILCR;

In order to solve the problems of the technologies described above, the communication network that the present invention provides the third identify label (AID) that realizes based on the Wimax network architecture to separate with the position again, comprise in the Wimax network architecture access business network be connected business network, comprise base station and IAD in the described access business network, it is characterized in that, comprise identity location register (ILR) in the described connection business network, this communication network also comprises the broad sense Forwarding plane that is used for opsition dependent sign (RID) route and transmits data message, wherein:

Described IAD is used to terminal that access service and control are provided, be terminal distribution RID, RID to the ILR registration of terminal attaching ground, cancellation and inquiry terminal, the link information of maintenance terminal and Correspondent Node, the AID-RID map information of maintenance terminal and Correspondent Node, realize the route and the forwarding of data message, and cooperate the realization terminal to span into the switching of gateway with other IADs;

Further, above-mentioned communication network also can have following characteristics: described IAD comprises RID distribution module, Register Cancel module, mapping management module and data forwarding module, wherein:

Described RID distribution module is used for inserting or the terminal cut process is terminal distribution RID in terminal request, and the AID of this RID and this terminal is sent to mapping management module and Register Cancel module;

Described Register Cancel module is used for receiving terminal AID and this terminal RID being registered the AID of carried terminal and RID to this terminal attaching ground ILR for behind the RID of this terminal distribution; After knowing the terminal off-line, ask this terminal attaching ground ILR to nullify the RID of this terminal;

Described data forwarding module, be used for after receiving uplink data messages, when terminal therein and Correspondent Node do not belong to same ILCR, to be encapsulated in the data message that comprises terminal AID and Correspondent Node AID from the Correspondent Node RID that mapping management module or Correspondent Node ownership place ILR inquire, be forwarded to the ILCR that sets up the tunnel with it; And be used for the downlink data message decapsulation is sent to terminal.

Further, above-mentioned communication network also can have following characteristics: described IAD also comprises connection maintenance module and processed offline module, wherein:

Described processed offline module is used for after determining to insert the terminal off-line of this IAD, notice Register Cancel module, connection maintenance module and mapping management module; When definite Correspondent Node off-line, notice connects maintenance module and mapping management module;

Described mapping management module is deleted the AID-RID map information that does not have the Correspondent Node of correspondence in this terminal communication opposite end with the other-end that inserts this IAD knowing that terminal cuts out or during off-line, deleting the AID-RID map information of this terminal; Know terminal communicate by letter with Correspondent Node stop after, and this Correspondent Node do not have correspondence with the other-end that inserts this ILCR, then deletes the AID-RID map information of this Correspondent Node; Know the Correspondent Node off-line or when stopping, the AID-RID information of deleting this Correspondent Node with terminal communication.

Described RID distribution module is pointed to this IAD for terminal distribution RID; When described processed offline module is determined the Correspondent Node off-line, also according to terminal AID to connecting the AID that finds these all Correspondent Nodes of terminal in the maintenance module, inquire the RID of all Correspondent Nodes to the mapping management module again, send terminal off-line notice to the opposite end IAD then, carry the AID of this terminal; And after receiving the terminal off-line notice that the opposite end IAD is sent, determine this terminal off-line as Correspondent Node; Perhaps

Described RID distribution module is pointed to ILCR for terminal distribution RID; When described processed offline module is determined the Correspondent Node off-line, also according to terminal AID to connecting the AID that finds these all Correspondent Nodes of terminal in the maintenance module, again from this locality or the server lookup of Correspondent Node AAA ownership place to the positional information of opposite end IAD, send terminal off-line notice to the opposite end IAD then, carry the AID of this terminal; And after receiving the terminal off-line notice that the opposite end IAD is sent, determine this terminal off-line as Correspondent Node.

Described IAD also comprises handover module, is used for moving to when terminal the control of the switching that triggers another IAD coverage, comprising:

Cut out the unit and be used to realize cutting out of terminal, the data message forwarding of receiving between transfer period that mails to this terminal is to the incision IAD, notice connected maintenance module after switching was finished, and caused the IAD or the ILCR of terminal RID sensing to change if switch, and also notified the mapping management module.Alternatively, the link information of this terminal and Correspondent Node and/or the AID-RID map information of this terminal communication opposite end are sent to the preservation of incision IAD;

The incision unit is used to realize the incision of terminal, if switching the IAD or the ILCR that cause terminal RID to point to changes, be the new RID of terminal distribution, the AID-RID map information that this terminal is new is saved in the mapping management module, and this terminal AID and newly assigned RID are sent to the Register Cancel module.

Described access business network has the data surface interface with the broad sense Forwarding plane; Described data forwarding module comprises:

First retransmission unit, be used to receive that the base station sends comprises terminal AID and Correspondent Node AID, and after this terminal and Correspondent Node do not belong to the uplink data messages of same ILCR, as inquiring the RID of Correspondent Node in the mapping management module, the RID of this terminal and Correspondent Node is encapsulated in as source, destination address sends to the broad sense Forwarding plane in the data message; As the RID of inquiry, to the RID of Correspondent Node ownership place ILR query communication opposite end less than Correspondent Node;

Second retransmission unit is used for downlink data message decapsulation that the broad sense Forwarding plane is sent, peel off RID wherein after, by this IAD and being connected of this terminal mailing to this terminal.

Comprise identity position core router (ILCR) in the described connection business network, be used for the session connection of maintenance terminal, set up the tunnel between IAD and the ILCR, and forwarding is the data message of source address and destination address with the RID form between broad sense Forwarding plane and IAD;

The RID distribution module of described IAD is that the RID of terminal distribution points to this IAD; Described data forwarding module comprises:

First retransmission unit, be used for comprising terminal AID and Correspondent Node AID what receive that the base station sends, and after this terminal and Correspondent Node do not belong to the uplink data messages of same ILCR, as inquire the RID of Correspondent Node in the mapping management module, the RID of this terminal and Correspondent Node is encapsulated in the data message as source, destination address, is forwarded to ILCR after doing tunnel encapsulation; As the RID of inquiry, to the RID of Correspondent Node ownership place ILR query communication opposite end less than Correspondent Node;

Second retransmission unit is used for downlink data message decapsulation that ILCR is sent, peel off RID and tunnel encapsulation wherein after, by this IAD and being connected of this terminal mailing to this terminal.

The dynamic tunnel of setting up between described IAD (AGW) and ILCR that is based on terminal; Perhaps

What set up between described IAD (AGW) and ILCR is static tunnel, described ILCR also is used for the AGW-AID-RID map information of foundation back, the tunnel buffer memory terminal between IAD and ILCR and safeguards, and move to the coverage of another ILCR in terminal after, delete the AGW-AID-RID map information of this terminal.

The RID distribution module of described IAD is that the RID of terminal distribution points to the ILCR that sets up the tunnel with this IAD; Described data forwarding module comprises:

First retransmission unit, be used to receive that the base station sends comprises terminal AID and Correspondent Node AID, and after this terminal and Correspondent Node do not belong to the uplink data messages of same ILCR, as inquire the RID of Correspondent Node in the mapping management module, with this terminal RID or this access gateway address as source address, Correspondent Node RID is encapsulated in the data message as destination address, is forwarded to ILCR after doing tunnel encapsulation; As the RID of inquiry, to the RID of Correspondent Node ownership place ILR query communication opposite end less than Correspondent Node;

Second retransmission unit, be used for downlink data message decapsulation that ILCR is sent, peel off wherein RID and tunnel encapsulation, perhaps peel off wherein RID, access gateway address and tunnel encapsulation, after perhaps peelling off tunnel encapsulation wherein, by this IAD and being connected of this terminal mailing to this terminal.

What set up between described IAD (AGW) and ILCR is static tunnel, and described ILCR comprises packet forwarding module, and this packet forwarding module comprises again:

First retransmission unit, be used for after receiving that terminal that IAD is sent and Correspondent Node do not belong to the uplink data messages of same ILCR, according to the AGW-AID-RID map information in the source AID inquiry local cache, after terminal RID will being replaced with as the access gateway address of source address and peelling off tunnel encapsulation, be transmitted to mapping Forwarding plane or broad sense Forwarding plane;

Second retransmission unit, be used for after receiving the downlink data message that the broad sense Forwarding plane is sent, according to the AGW-AID-RID map information in the purpose AID inquiry local cache, after purpose RID in the data message replaced with access gateway address and do tunnel encapsulation, be forwarded to the IAD that this terminal inserts; Perhaps after receiving the downlink data message that the broad sense Forwarding plane is sent, peel off the RID that encapsulates in the data message and do tunnel encapsulation, according to the AGW-AID-RID map information in the purpose AID inquiry local cache, with the IAD of data message forwarding to this terminal access.

Described connection business network also comprises packet forward function (PTF); After first retransmission unit in the described IAD receives that the terminal that sends the base station and Correspondent Node do not belong to the uplink data messages of same ILCR, as inquire about RID in the mapping management module less than Correspondent Node, RID is encapsulated in the data message with this terminal, is forwarded to this Correspondent Node ownership place PTF; Perhaps be encapsulated in data message as source address this terminal RID and after doing tunnel encapsulation, be forwarded to this Correspondent Node ownership place PTF;

Described PTF is used for after receiving the data message that ILCR or other PTF send to, after finding corresponding RID and be encapsulated in heading according to Correspondent Node AID in the data message, this data message is sent to opposite end ILCR or opposite end IAD through the broad sense Forwarding plane as destination address.

After first retransmission unit in the described IAD receives that the terminal that sends the base station and Correspondent Node do not belong to the uplink data messages of same ILCR, as inquire about RID in the mapping management module less than Correspondent Node, the described data message of elder generation's buffer memory, after inquiring the RID of Correspondent Node, again the RID of this terminal and Correspondent Node is encapsulated in the data message as source, destination address, is forwarded to ILCR or directly sends to the broad sense Forwarding plane after doing tunnel encapsulation.

The AID-RID map information that first retransmission unit in the described IAD also is used for the Correspondent Node that will inquire is saved in the mapping management module;

After second retransmission unit in the described IAD is received downlink data message, judge also whether the AID-RID map information of Correspondent Node in the described data message exists in the mapping management module, then be saved in the mapping management module as not existing;

First retransmission unit in the described IAD and second retransmission unit judge also whether terminal AID has been kept at the corresponding relation of Correspondent Node AID in the data message of receiving and be connected in the maintenance module, as do not have, and is saved in to connect in the maintenance module.

The incision unit of described IAD also is used to inquire about the positional information of opposite end IAD, sends terminal RID update notification to all opposite end IADs, carries the new AID-RID map information of this terminal;

Mapping management module in the described IAD also is used to receive the AID-RID map information that upgrades local this terminal of preserving after the terminal RID update notification of sending the opposite end.

The above-mentioned communication network of realizing based on the Wimax network architecture, the application scenarios of support portable terminal efficiently solves the alternate route problem under this scene.

The demand of compatible terminal, compatible upper-layer service has been considered in the deployment of the above-mentioned communication network of realizing based on the Wimax network architecture, only needs the upgrade of network side apparatus, the compatible application scenarios of not changing terminal.

Make terminal to initiate communication, and according to the addressing of RID realization to the opposite end, the method that the present invention also provides a kind of starting up of terminal to insert above-mentioned first kind and second kind communication network comprises by identify label:

Behind the starting up of terminal, carry out access authentication and initial service flow and create, obtain identify label (AID) from IAD then;

Initiate in the process of tunnel foundation to identity position core router (ILCR) at described IAD, described ILCR points to the station location marker (RID) of this ILCR for this terminal distribution, preserve the map information of this terminal AID and RID, and will be notified to described IAD for the RID of terminal distribution;

Described IAD or ILCR initiate register requirement to this terminal attaching ground ILR behind the AID and RID that obtain this terminal, carry the AID and the RID of this terminal; After this ILR receives this register requirement, and preserve the current AID-RID mapping relations of this terminal.

Further, said method also can have following characteristics:

The AID that described terminal is obtained from described IAD is the access authentication flow process of this terminal, is handed down to described IAD by this terminal attaching ground aaa server.

Further, said method also can have following characteristics:

Described terminal is by DHCP (DHCP) flow process or obtains the AID of described terminal by mobile IP mode from IAD, the static ip address that this AID distributes during for this terminal unit contractual.

Further, said method also can have following characteristics:

In the process that described tunnel is set up, described ILCR also authenticates to this terminal attaching ground aaa server, obtains key information.

In order to make terminal to initiate communication by identify label, and realize addressing to the opposite end according to RID, the present invention also provides a kind of starting up of terminal to insert the method for above-mentioned the third communication network, comprising:

Behind the starting up of terminal, carry out access authentication and initial service flow and create the identify label (AID) of obtaining described terminal then from IAD;

Described IAD is this terminal distribution station location marker (RID), preserves the map information of this terminal AID and RID, and sends register requirement to the ILR on described terminal attaching ground, carries the AID and the RID of this terminal;

After this ILR receives this register requirement, and preserve the current AID-RID mapping relations of described terminal.

Further, said method also can have following characteristics:

The AID that described terminal is obtained from described IAD is the access authentication flow process of terminal, is handed down to described IAD by this terminal attaching ground aaa server.

Further, said method also can have following characteristics:

Described terminal is to obtain the AID of this terminal by DHCP (DHCP) flow process or by mobile IP mode from IAD, the static ip address that this AID distributes during for this terminal unit contractual.

Further, said method also can have following characteristics:

Be to obtain in the process of AID to this IAD in described terminal, triggering described IAD is described terminal distribution RID's.

Further, said method also can have following characteristics:

What set up between described IAD and the ILCR is static tunnel, and described IAD is that the AID of described terminal distribution points to this IAD or points to the ILCR that establishes static tunnel with it; Perhaps

The dynamic tunnel of setting up between described IAD and the ILCR that is based on terminal, described IAD are that the AID of described terminal distribution points to this IAD.

Above-mentioned terminal inserts the method for this communication network, has inserted to terminal distribution identify label and station location marker in terminal, and to ILC the RID of terminal is registered, and makes terminal to initiate communication by identify label, and according to the addressing of RID realization to the opposite end.

Description of drawings

Fig. 1 is existing Wimax network architecture schematic diagram.

Fig. 2 separates the network topology schematic diagram of (SILSN) framework with the position for a kind of identify label of the present invention.

Fig. 3 is the schematic diagram of the topological relation of SILSN network and traditional IP among Fig. 2.

Fig. 4 a is the schematic diagram of the SILSN network of realizing based on the Wimax framework of the embodiment of the invention one to six.

Fig. 4 b is the schematic diagram of the embodiment of the invention seven based on the SILSN network of Wimax framework realization.

Fig. 5 is first kind of flow chart that embodiment of the invention user starts shooting and networks.

Fig. 6 is second flow chart that embodiment of the invention user starts shooting and networks.

Fig. 7 is the third flow chart that embodiment of the invention user starts shooting and networks.

Fig. 8 is the 4th kind of flow chart that embodiment of the invention user starts shooting and networks.

Fig. 9 is the module map of the embodiment of the invention one IAD and ILCR.

Figure 10 is the module map of the embodiment of the invention two IADs and ILCR.

Figure 11 is the module map of the embodiment of the invention six IADs and ILCR.

Embodiment

Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is described in further detail, can be implemented so that those skilled in the art can better understand the present invention also, but illustrated embodiment is not as a limitation of the invention.

Shown in Figure 2 is that a kind of identify label separates (SILSN:Subscriber Identifier﹠amp with the position; Locator Separation Network) framework, the network topology of this SILSN framework is divided into does not have overlapping Access Network and backbone network on the topological relation, Access Network is positioned at the edge of backbone network, be responsible for the access of all terminals, the route and the forwarding of the inter-terminal data message that backbone network is responsible for inserting.

Two kinds of sign types are arranged: insert sign (AID:Access Identifier) and Route Distinguisher (RID:Routing Identifier) in the network of SILSN framework.Wherein, AID is the User Identity of terminal, and network remains constant in the terminal moving process for each terminal use distributes an AID; RID is that network is the station location marker of terminal distribution, uses at backbone network.It should be noted that identify label can have different titles with station location marker at different SILSN frameworks, but essence is the same.After the user contracts and becomes this architecture network user, the operation of distributing telephone numbers of can in this user attaching authentication center and ownership ILR, opening an account, authentication center and ILR write down this attribute of user data, are included as the AID that this user distributes.After the processing that finishing opens an account distributes telephone numbers, AID is given this user by static allocation, and in effective legal duration of this user, this user's AID is constant.

In the SILSN framework, terminal can be one or more in portable terminal, fixed terminal and the roam terminals, as mobile phone, landline telephone, computer and server or the like.

In the SILSN framework, Access Network is used to terminal that two layers of (physical layer and link layer) access means, the physics access link between maintenance terminal and the ASN are provided.Two layers of possible access means comprise: cellular mobile network technology (GSM/CDMA/TD-SCDMA/WCDMA/Wimax/LTE), DSL, band optical fiber insert or WiFi inserts or the like.

In the SILSN framework, the access service node is used to terminal to provide access service, maintenance terminal to be connected with network, is terminal distribution RID, safeguards the AID-RID map information, to the RID of registration of mapping Forwarding plane and inquiry terminal, and functions such as the route of realization data message and forwarding.

In the SILSN framework, the main network element of backbone network comprises:

Access service node (ASN:Access Service Node) is used to terminal distribution RID, the AID-RID map information of maintenance terminal, to the RID of ILR registration and inquiry terminal, and the route and the forwarding that realize data message, terminal must insert backbone network through ASN.The RID that ASN distributes comprises the address information of this ASN, and during as the destination address of data message, this data message will be routed to this ASN with this RID.

Generic router (CR:Common Router) is used for carrying out routing according to the RID of data message, and transmitting with RID is the data message of destination address.

Identity location register (ILR:Identity Location Register), ILR is used to preserve the identify label and the station location marker map information of terminal, also is written as the AID-RID map information in the literary composition, handles registration, cancellation and inquiry to terminal location;

Alternatively, backbone network can also comprise:

Packet forward function (PTF:Packet Transfer Function) is also referred to as the packet forward functional node, and being used for route and transmitting with AID is the data message of destination address.

Interconnect services node (ISN), has interface with generic router, ASN and ILR, be used to inquire about, safeguard the AID-RID map information of present networks terminal, the data message that comes and goes between encapsulation, route and forwarding present networks and the traditional IP is realized interconnecting of two networks.

Above-mentioned ILR, or ILR and PTF constituted the mapping Forwarding plane of backbone network, CR, or CR and ISN have constituted the broad sense Forwarding plane of backbone network.Can also comprise other network elements such as authentication center in the backbone network.

The SILSN framework initial stage can traditional IP one or more isolated island forms exist and development, or as the expansion of traditional IP.The topological relation of SILSN framework and traditional IP as shown in Figure 3, the backbone network of SILSN framework part is in same plane with Traditional IP, by ISN and traditional IP intercommunication.The SILSN framework possesses the ability of independent networking, can form to break away from the network that traditional IP develops alone, and in this stage, functional entity ISN will no longer exist.

The SILSN framework mainly is the technology of separating with the position at a kind of identify label that existing mobile Internet proposes, below based on the Wimax network architecture, proposition realizes the embodiment of SILSN framework on the Wimax network architecture, be primarily aimed to realizing that terminal identity identifies the improved related content of carrying out of separating needs with the position and is described on original system.

Fig. 4 a is based on the schematic diagram that the Wimax network architecture realizes the SILSN framework, and solid line is represented the connection of loading end among the figure, and dotted line is represented the connection of chain of command.In the system with SILSN framework, the Wimax conventional terminal can realize not having the mobility of fixed anchor point, has solved the circuitous problem of packet path, but also can reach the purpose that solves IP address dual identity.

In the literary composition, the network element that the Correspondent Node of terminal is inserted abbreviates the opposite end network element as; When terminal was switched, the network element that terminal is cut out abbreviated as and cuts out network element, and the network element that terminal is cut into is called the incision network element; Describing when transmitting information between two network elements, be the opposite end network element as not particularly pointing out certain network element, the information that is interpreted as between the network element of the same side that terminal inserts transmits; In addition, in order to express easily, when the function of certain network element of statement, the user terminal that is linked into this network element is called terminal, with the Correspondent Node that is called of the user terminal communication that inserts this network element.

In addition, when a network element is received the information of another network element transmission, can be with this distribution of information to the module of preserving or handle this information, this function is explanation no longer separately hereinafter.

Embodiment one

In the communication network with SILSN framework of present embodiment based on the realization of the Wimax network architecture, also comprise access business network (W-ASN), connect business network (W-CSN) and broad sense Forwarding plane, shown in Fig. 4 a.In W-CSN, has the original network element in the Wimax frameworks such as AAA agency or server (AAA Proxy/Server), accounting server, interconnecting gateway equipment, also be provided with identity position core router (Identity Location Core Route, abbreviation ILCR), identity location register (ILR) and packet forward function (PTF), ILR and PTF can close and establish, be expressed as ILR/PTF this moment, and the ILR/PTF among each W-CSN has constituted the mapping Forwarding plane.Wherein, ILCR has gathered the function of HA, W-CR, and the required new function of expansion realization SILSN framework, and the functional module of expansion can be closed with former functional module and be established, and also can be provided with separately.Comprise base station and IAD among the W-ASN, on the basis of the functional entity that the IAD of IAD wherein in the Wimax framework had (as grappling datapath function (Anchor DPF), authentication device etc.), expanded and realized the required new function of SILSN.In addition, the broad sense Forwarding plane in this communication network comprises the packet data network (other embodiments herewith) of support by RID route and forwarding data message.Have the data surface interface between W-CSN and the broad sense Forwarding plane, be expressed as D interface.

In the present embodiment, setting up the dynamic tunnel based on terminal between ILCR and the IAD, when network registry is registered or switch, is terminal distribution RID by ILCR by set strategy in terminal, is registered to ILR by IAD.The RID that ILCR distributes should point to this ILCR, and according to service needed, ILCR can be one or more RID of a terminal distribution special use, also can be the identical RID of a plurality of terminal distribution.When carrying out data message forwarding, inquire about the AID-RID map information to ILR, when the terminal off-line, nullify the AID-RID map information to ILR by IAD by ILCR.

Please refer to Fig. 9, the WiMAX system of present embodiment comprises following a few part:

IAD (AGW) is arranged in WiMAX access business network (W-ASN), is used to user terminal that access service and control are provided, and ILR carries out registration and unregistration to terminal to terminal attaching ground, the link information of maintenance terminal and Correspondent Node.IAD also can be used for cooperating with other IADs realizes that terminal strides AGW, strides the switching of ILCR.IAD also has other functions in the Wimax system, as cooperate authentication of finishing terminal etc. with aaa server, in the literary composition this part function is no longer described in detail.

In the present embodiment, IAD comprises the following functional entity relevant with expanded function:

The Register Cancel module is used for asking this terminal attaching ground ILR this terminal RID to be registered the AID of carried terminal and RID after receiving terminal AID and being the RID of this terminal distribution; After knowing the terminal off-line, ask this terminal attaching ground ILR to nullify the RID of this terminal.

The processed offline module is used for when determining the terminal off-line that inserts, and notifies the Register Cancel module and is connected maintenance module; Alternatively, notify all opposite end IADs this terminal off-line, and when definite Correspondent Node off-line, notice connection maintenance module and ILCR.The processed offline module can be from this locality or the server lookup of Correspondent Node AAA ownership place to the positional information of opposite end IAD.The processed offline module can be according to the real-time testing mechanism of stream, or waits to determine whether off-line of terminal according to the relevant signaling of receiving the terminal off-line.Need to prove that notice opposite end this terminal off-line is alternatively during the terminal off-line, whether off-line of Correspondent Node also can be determined by flowing real-time testing mechanism in the opposite end.

Connect maintenance module, the link information that is used to preserve terminal and Correspondent Node; At the terminal off-line or shift out back (comprising the scene that has or do not exist Correspondent Node) or communicate by letter and stop the link information of back this terminal of deletion and Correspondent Node with Correspondent Node; After knowing the Correspondent Node off-line or stopping, delete the link information of this Correspondent Node and terminal with terminal communication.Terminal shifts out or communicates by letter termination with Correspondent Node can be by functional module notice connection maintenance module relevant in the IAD, and ILCR is similar.

Data forwarding module, be used between base station and ILCR, carrying out data message forwarding, can be behind receiving data packets, whether terminal AID has been kept at the corresponding relation of Correspondent Node AID and has been connected maintenance module in the judgment data message, as not preserving, notice connects the link information that maintenance module is preserved this terminal and Correspondent Node.

Handover module is used for the control of the switching that terminal moves to another grappling DPF module or ILCR when having Correspondent Node coverage triggers, comprises cutting out unit and incision unit:

Cut out the unit and be used to realize control that terminal is cut out, this terminal of notice ILCR is switched, and to the incision IAD, terminal cuts out the back notice and connects maintenance module with the data message forwarding that sends to this terminal received between transfer period; Alternatively, send to the incision IAD with connecting this terminal of maintenance module preservation and the link information of Correspondent Node.

The incision unit is used to realize the control to the terminal incision, is saved in the link information of Correspondent Node and is connected maintenance module cutting out this terminal that IAD sends.

In the WiMAX system, the Register Cancel module can be closed with the functional entity authentication device of IAD or grappling DPF module and be established.The connection maintenance module can close with authentication device or grappling DPF module to be established, when not closing when establishing with grappling DPF, need grappling DPF module from data message, to obtain the AID of terminal and Correspondent Node, corresponding relation new or vicissitudinous terminal AID and Correspondent Node AID is notified to is connected that maintenance module is preserved or upgrades.Data forwarding module can close with grappling DPF module and establish.The switching controls module can be closed with grappling DPF module and be established.

Identity position core router (ILCR), be arranged in WiMAX core business network (W-CSN), be used for the session connection of maintenance terminal, point to the RID of this ILCR for terminal distribution, to the ILR inquiry terminal RID of (terminal herein comprises Correspondent Node), the AID-RID map information of maintenance terminal and Correspondent Node, and the route and the forwarding that realize data message.ILCR also is used for cooperating the realization terminal to stride the switching of ILCR with other ILCR.

In the present embodiment, ILCR comprises the following functional entity relevant with expanded function:

Module is set up in the tunnel, is used to set up the tunnel between IAD and the ILCR, is terminal distribution RID, and the AID of terminal is sent to the Register Cancel module of IAD and the mapping management module of this locality with this RID; Present embodiment adopts the mode of dynamically setting up the tunnel, promptly sets up the tunnel based on terminal in the terminal access procedure.

The mapping management module is used for the AID-RID map information of buffer memory terminal and Correspondent Node; Know that terminal cuts out or during off-line, delete the AID-RID map information of this terminal, delete the AID-RID map information that does not have the Correspondent Node of correspondence in this terminal communication opposite end with the other-end that inserts this ILCR; Know terminal communicate by letter with Correspondent Node stop after, and this Correspondent Node do not have correspondence with the other-end that inserts this ILCR, then deletes the AID-RID map information of this Correspondent Node; Know the Correspondent Node off-line or when stopping, the AID-RID information of deleting this Correspondent Node with terminal communication; After receiving the terminal RID update notification of sending the opposite end, upgrade the AID-RID map information of local this terminal of preserving; The mapping management module can be to inserting the map information unified management of all Correspondent Nodes of this ILCR.

The processed offline module is used for when determining the terminal off-line that inserts, notice mapping management module; When definite Correspondent Node off-line, notice mapping management module; The processed offline module can be according to the real-time testing mechanism of stream, or wait to determine whether off-line of terminal according to the relevant signaling of receiving the terminal off-line, can notify or flow mode such as real-time testing mechanism and determine corresponding communication opposite end off-line according to the terminal off-line that the IAD of receiving is sent.

Packet forwarding module, after being used to receive uplink data messages, the RID of the Correspondent Node that will inquire from mapping management module or Correspondent Node ownership place ILR and the RID of terminal are encapsulated in the data message that comprises terminal AID and Correspondent Node AID together, when terminal and Correspondent Node do not belong to same ILCR, through broad sense Forwarding plane route and be forwarded to opposite end ILCR, and, send to terminal after peelling off RID wherein with the downlink data message decapsulation.

Packet forwarding module comprises first retransmission unit and second retransmission unit, wherein:

First retransmission unit is used for after receiving the uplink data messages that comprises terminal AID and Correspondent Node AID that send the base station, when terminal and Correspondent Node do not belong to same ILCR, as inquire the RID of Correspondent Node in the mapping management module, the RID of this terminal and Correspondent Node is encapsulated in the data message as source, destination address, through broad sense Forwarding plane route and be forwarded to opposite end ILCR;

As the RID of inquiry less than Correspondent Node, to the RID of Correspondent Node ownership place ILR query communication opposite end, the AID-RID of the Correspondent Node that inquires is saved in the mapping management module.This moment is to the data message, this terminal RID can be encapsulated in the data message as source address, (destination address can be the RID of Correspondent Node ownership place PTF to be forwarded to PTF, also can be the RID of visit ground PTF, PTF re-sends to Correspondent Node ownership place PTF by visit ground, or the like), be forwarded to opposite end ILCR by this PTF; Also can first buffer memory, after inquiring the RID of Correspondent Node, again the RID of this terminal and Correspondent Node is encapsulated in the data message as source, destination address, through broad sense Forwarding plane route and be forwarded to opposite end ILCR.

First retransmission unit searches terminal (or Correspondent Node) ownership place ILR and/or PTF can realize by terminal (or Correspondent Node) AID of the local configuration of inquiry and the correspondence relationship information of its ownership place ILR and/or PTF.

Second retransmission unit is used for downlink data message decapsulation that the broad sense Forwarding plane of receiving is sent, peel off RID wherein after, mail to this terminal by ILCR with being connected of this terminal; Alternatively, also whether the AID-RID map information of Correspondent Node exists in the mapping management module in the judgment data message, then is saved in the mapping management module as not existing.

When if first retransmission unit judges that according to AID terminal in the uplink data messages and Correspondent Node belong to same ILCR, first retransmission unit can not carry out encapsulation and/or the inquiry RID of RID, directly issue this ILCR second retransmission unit and handle, second retransmission unit does not need to peel off the encapsulation of RID yet.Can certainly not judge, adopt all that above-mentioned mode when not belonging to ILCR encapsulates, route and forwarding.Other embodiment herewith.

For the terminal that belongs to same ILCR, whether can be with deal with data message in ILCR as a kind of optional mode, rather than essential, promptly do not get rid of ILCR and do not judge whether belong to same ILCR between terminal and the Correspondent Node, use existing IP routing mechanism and come route.Quan Yaozhong also should embody this point.Also similar among other embodiment

The switching controls module is used for terminal moves to the switching that triggers another ILCR coverage when having Correspondent Node control, comprises cutting out control unit and incision control unit, wherein:

Cut out control unit and be used to realize control that terminal is cut out, the incision ILCR that moves to terminal sends handoff request; Give incision ILCR with the data message forwarding of receiving between transfer period that sends to this terminal; Cut out back notice mapping management module in this terminal; Alternatively, the AID-RID map information of this terminal communication opposite end being issued incision ILCR preserves.Between transfer period, cut out control unit and also can the AID-RID map information of Correspondent Node not issued incision ILCR, can rebuild this map information by inquiry ILR this moment by incision ILCR in follow-up data message repeating process.

The incision control unit is used to realize the control to the terminal incision, for terminal distribution is pointed to the RID of this ILCR and AID and this RID of this terminal sent to mapping management module and IAD; And the positional information of inquiry opposite end ILCR, send terminal RID update notification to opposite end ILCR, carry the AID-RID map information of this terminal.The incision control unit can find the AID of these all Correspondent Nodes of terminal to the connection maintenance module of IAD according to the AID of terminal, arrives the RID that the mapping management module searches arrives described Correspondent Node then, and this RID is the positional information of opposite end ILCR.Other embodiment also can be like this.

Need to prove that cut out a side direction and cut the AID-RID map information that a side is transmitted the Correspondent Node of terminal, the correspondence information of transmitting terminal and Correspondent Node is optionally, cut a side and also can in the process that terminal is initiated to communicate by letter, obtain these information.Other embodiment herewith.

Identity location register and packet forward function (ILR/PTF) are arranged in the mapping Forwarding plane of backbone network, can be two functional modules on the same entity.

ILR is used to receive the registration and unregistration request to the home subscriber terminal, safeguards the AID-RID map information of this terminal, and after the query requests of receiving terminal, the pairing RID of this terminal AID that comprises in the request is returned to query requests side.ILR can preserve or upgrade the AID-RID map information of this terminal after receiving the register requirement of home subscriber terminal, it is invalid to receive after the de-registration request of home subscriber terminal the AID-RID map information of this terminal being deleted or is changed to.If receive registration, de-registration request, then be transmitted to this terminal attaching ground ILR and handle the non-attribution user terminal.ILR can close with aaa server and establish, i.e. the existing aaa server of expansion also can be an independent network element in the network to support the ILR function.

Packet forward function (PTF) is optional, PTF can close with ILR on entity if be provided with separately, be used for after receiving that ILCR or other PTF send to the data message of (destination address is this PTF address), after finding corresponding RID (ILR searches or search this locality as arriving) and be encapsulated in heading according to Correspondent Node AID, this data message is sent to opposite end ILCR through the broad sense Forwarding plane as destination address.

Shown in Fig. 4 a, the main interface in this framework is continued to use the interface in the existing WiMAX network, and its function is expanded.Comprise:

● Interface R3 is the interface between IAD and the W-CSN, and when roaming, Interface R3 is the interface between IAD and the visit W-CSN.The difference of the Interface R3 function in interface function and the existing WiMAX network is mainly reflected in following aspect:

Chain of command is used for the RID to terminal attaching ground ILR registration terminal; When roaming, the chain of command signaling between above-mentioned IAD and terminal attaching ground ILR all can be transmitted to ownership ILR by the R5 interface by visit ground ILR.

The chain of command of Interface R3 also is used for setting up the tunnel with ILCR, transmits terminal RID information, can also be used to transmit Correspondent Node AID information.

The data surface of Interface R3 also is used for the data forwarding between IAD and ILCR, and its message format is:

Wherein, source AID is the AID of the terminal that sends datagram, and purpose AID is the AID of the terminal that sends to of data message; IAD is before transmitting data message, on data message, increased tunnel encapsulation, the tunnel encapsulation mode has a lot, as L2TPv3, IP-in-IP, MPLS (LDP-based and RSVP-TE based), GRE, MIP and IPsec etc., the present invention is not limited to any specific tunnel encapsulation mode.

● Interface R4 is the interface between the IAD, and the difference of the Interface R4 function in interface function and the existing WiMAX network is mainly reflected in following aspect:

Chain of command transmits terminal and Correspondent Node link information when being used for the user and moving.

● the interface when the R5 interface is roaming between visit W-CSN and the ownership W-CSN, the difference of the R5 interface function in interface function and the existing WiMAX network is mainly reflected in following aspect:

Chain of command is used for to the ILR registration and unregistration of terminal attaching ground.

When striding the ILCR switching, the R5 interface still is the interface between the ILCR, is used for the transmission of handover management signaling, transmits the RID updating message between Correspondent Node during change in location, data forwarding between ILCR, may there be following form in its data message at the different times that switches:

When cutting out ILCR when carrying out RID encapsulation and decapsulation, message format is:

When incision ILCR carried out RID encapsulation and decapsulation, message format was:

ILCR is before transmitting data message, on data message, increased tunnel encapsulation, the tunnel encapsulation mode has a lot, and as L2TPv3, IP-in-IP, MPLS (LDP-based and RSVP-TE based), GRE and IPsec etc., the present invention is not limited to any specific tunnel encapsulation mode.

● D interface is the interface between ILCR and the broad sense Forwarding plane, is used for the forwarding of terminal data message between ILCR and broad sense Forwarding plane.The form of the data message of its interface is:

The data message of D interface is to have encapsulated on the basis of the data message of R1 interface as the source RID of source address with as the purpose RID of destination address, wherein source RID is the RID for the terminal distribution that sends packet, and purpose RID is the RID that distributes for Correspondent Node that packet sends to.

● E interface is the interface between ILCR and the mapping Forwarding plane (ILR/PTF).

Chain of command is used for inquiry and safeguards the AID-RID map information.User's face is used for the forwarding of terminal data message between ILCR and PTF, and the form of the data message of its interface is:

The data message of E interface also is the source RID that has encapsulated on the basis of the data message of R1 interface as source address, RIDi as destination address, wherein source RID is the RID that sends the terminal of packet, RIDi is the routing address of visiting ground PTF or Correspondent Node ownership place PTF in the mapping Forwarding plane, can be obtained by the configuration data on the ILCR.

For the communication network of present embodiment, also there is following distortion:

First becomes example, in this change example, does not have the Register Cancel functions of modules in the IAD, and this functional module realizes in ILCR.Terminal still safeguards that by the maintenance module that is connected in the IAD map information of AID-RID is also still safeguarded by ILCR with the link information of Correspondent Node.At this moment, module and switching controls module are set up in the tunnel of ILCR does not need to send to IAD with the AID of terminal with for the RID of terminal distribution.

Second becomes example, in this change example, obtain the link information of terminal and Correspondent Node and notify IAD by the control unit that cuts out among the ILCR, the processed offline module of ILCR can be determined whether off-line and notify IAD of terminal and/or Correspondent Node according to the real-time testing mechanism of stream, after packet forwarding module among the ILCR is received data message, whether terminal AID has been kept at the corresponding relation of Correspondent Node AID and has been connected maintenance module in the judgment data message, as not preserving the connection maintenance module that then is sent to IAD.ILCR also can be provided with the connection maintenance module in this locality.

The 3rd becomes example, in this change example, when not having the function of transmitting terminal RID update notification as the R5 interface, when terminal moved the ILCR that causes inserting and changes, incision ILCR need be delivered to opposite end ILCR through incision IAD, opposite end IAD with terminal RID update notification.Correspondingly, on functional module, the incision control unit of ILCR also is used for sending terminal RID update notification to IAD, the incision unit of IAD also is used for terminal RID update notification is sent to the opposite end IAD, and is forwarded to ILCR after receiving the terminal RID update notification that the opposite end IAD transmits.Interface R3 also needs to increase this function.

Embodiment two

The structure of present embodiment communication network is still with reference to Fig. 4 a, comprise access business network (W-ASN), connect business network (W-CSN) and broad sense Forwarding plane, the network element that comprises among W-ASN and the W-CSN is also identical with embodiment one, is to realize that with the difference of embodiment one the required residing network element of new functional module of SILSN is different.

In the present embodiment, setting up static tunnel between ILCR and the IAD, in terminal to network registration or when switching, is that terminal distribution is pointed to the RID of this IAD and registered to ILR by IAD.When carrying out data message forwarding, to ILR inquiry AID-RID map information, when the terminal off-line, nullify the RID of this terminal to ILR by IAD by IAD.

The module map of IAD and ILCR as shown in figure 10.

IAD is arranged in WiMAX access business network (W-ASN), for user terminal provides access service and control, the session connection of maintenance terminal, point to the RID of this IAD for terminal distribution, RID to the ILR registration of terminal attaching ground, cancellation and inquiry terminal, the link information of maintenance terminal and Correspondent Node, the AID-RID map information of maintenance terminal and Correspondent Node.IAD also is used for cooperating with aaa server the authentication of finishing terminal, and cooperates with other AGW and to realize that terminal strides AGW, strides the switching of ILCR.

The RID distribution module is used for inserting or the terminal cut process is pointed to the RID of this IAD for terminal distribution in terminal request, and the AID of this RID and this terminal is sent to Register Cancel module and mapping management module.

The Register Cancel module is used for carrying the AID and the RID of this terminal receiving terminal AID and this terminal RID being registered to this terminal attaching ground ILR for behind the RID of this terminal distribution; After knowing the terminal off-line, ask this terminal attaching ground ILR to nullify the RID of this terminal.

Connect maintenance module, the link information that is used to preserve terminal and Correspondent Node; Know the terminal off-line or shift out the back or communicate by letter and stop the link information of back this terminal of deletion and Correspondent Node with Correspondent Node; After knowing the Correspondent Node off-line or stopping, delete the link information of this Correspondent Node and terminal with terminal communication.

The mapping management module is used for the AID-RID map information of buffer memory terminal and Correspondent Node and safeguards; Know that terminal cuts out or during off-line, delete the AID-RID map information of this terminal, delete the AID-RID map information that does not have the Correspondent Node of correspondence in this terminal communication opposite end with the other-end that inserts this IAD; Know terminal communicate by letter with Correspondent Node stop after, and this Correspondent Node do not have correspondence with the other-end that inserts this ILCR, then deletes the AID-RID map information of this Correspondent Node; Know the Correspondent Node off-line or when stopping, the AID-RID information of deleting this Correspondent Node with terminal communication; Receive the AID-RID map information that upgrades local this terminal of preserving after the terminal RID update notification of sending the opposite end.The mapping management module can be managed together to the Correspondent Node that inserts all terminals of this IAD.

The processed offline module, be used for after determining to insert the terminal off-line of this IAD, notice Register Cancel module, connection maintenance module and mapping management module, alternatively, when having the terminal off-line of Correspondent Node, to connecting the AID that maintenance module finds these all Correspondent Nodes of terminal, find the RID of described Correspondent Node to mapping management module or ILR again according to the AID of this terminal, send terminal off-line notice according to the RID that finds to all opposite end IADs, carry the AID of this terminal; When definite Correspondent Node off-line, notice connects maintenance module and mapping management module.The processed offline module can wait to determine the terminal off-line according to relevant signaling, the real-time testing mechanism of stream of terminal off-line flow process, and terminal off-line notice, the real-time testing mechanism of stream sent according to the opposite end wait to determine the Correspondent Node off-line.

Data forwarding module, be used between base station and ILCR, carrying out data message forwarding, receive when uplink data messages and terminal and Correspondent Node do not belong to same ILCR that Correspondent Node RID that will inquire from mapping management module or Correspondent Node ownership place ILR and terminal RID are encapsulated in the data message that comprises terminal AID and Correspondent Node AID and are transmitted to ILCR; And, send to terminal after peelling off RID wherein with the downlink data message decapsulation.

Comprise first retransmission unit and second retransmission unit, wherein:

First retransmission unit is used for after receiving the uplink data messages that comprises terminal AID and Correspondent Node AID that send the base station, as inquire the RID of Correspondent Node in the mapping management module, the RID of this terminal and Correspondent Node is encapsulated in the data message as source, destination address, is forwarded to ILCR after doing tunnel encapsulation; As the RID of inquiry less than Correspondent Node, RID to Correspondent Node ownership place ILR query communication opposite end, the AID-RID of the Correspondent Node that inquires is saved in the mapping management module, this moment is to the data message, can behind the terminal RID that has encapsulated as source address, be forwarded to PTF, or be forwarded to ILCR (being forwarded to PTF) having encapsulated by ILCR as the terminal RID of source address and after doing tunnel encapsulation, also can first data cached message, after inquiring the RID of Correspondent Node again with the RID of this terminal and Correspondent Node as the source, destination address is encapsulated in the data message, is forwarded to ILCR after doing tunnel encapsulation.

Second retransmission unit is used for downlink data message decapsulation that ILCR is sent, peel off RID and tunnel encapsulation wherein after, by this IAD and being connected of this terminal mailing to this terminal; Alternatively, whether the AID-RID map information of Correspondent Node exists in the mapping management module in the judgment data message, then is saved in the mapping management module as not existing.

In addition, but first retransmission unit and second retransmission unit also in the judgment data message terminal AID whether be kept at the corresponding relation of Correspondent Node AID and be connected in the maintenance module, as do not have, be saved in and connect in the maintenance module.

Handover module is used for moving to when there is Correspondent Node in terminal the control of the switching that triggers another IAD coverage, comprises cutting out control unit and incision control unit, wherein:

Cut out the unit and be used to realize cutting out of terminal, the data message forwarding of receiving between transfer period that mails to this terminal is to the incision IAD.Notice connected maintenance module after switching was finished, and also notified the mapping management module.Alternatively, cut out the unit link information of this terminal and Correspondent Node and/or the AID-RID map information of this terminal communication opposite end are sent to the preservation of incision IAD.

The incision unit is used to realize the incision of terminal; Be terminal distribution RID, preserve the AID-RID map information of this terminal, and send to the Register Cancel module with this terminal AID with for the RID of this terminal distribution; Alternatively, send terminal RID update notification, carry the new AID-RID map information of this terminal to all opposite end IADs.The incision gateway can find the AID of these all Correspondent Nodes of terminal to the connection maintenance module according to the AID of this terminal, finds the RID of described Correspondent Node to mapping management module or ILR again, sends terminal RID update notification according to the RID that finds.

In the WiMAX system, the RID distribution module can be closed with grappling DPF and be established.The Register Cancel module can be closed with the functional entity authentication device of IAD or grappling DPF module and be established.The connection maintenance module can close with authentication device or grappling DPF module to be established, when not closing when establishing with grappling DPF, need grappling DPF module from data message, to obtain the AID of terminal and Correspondent Node, corresponding relation new or vicissitudinous terminal AID and Correspondent Node AID is notified to is connected that maintenance module is preserved or upgrades.Mapping management module, data forwarding module and handover module can close with grappling DPF and establish.

Identity position core router (ILCR), be arranged in WiMAX core business network (W-CSN), be used for the session connection of maintenance terminal, set up the tunnel between IAD and the ILCR, and between broad sense Forwarding plane and IAD route and to transmit with the RID form be the data message of source address and destination address, this function and router of the prior art are as broad as long.Terminal can be linked into ownership ILCR, also can be linked into visit ILCR.

Module is set up in the tunnel, is used to set up the static tunnel between IAD and the ILCR, promptly sets up the tunnel based on NE-level when AGW or ILCR power on.

The mapping management module, being used for tunnel between IAD (AGW) and ILCR sets up the AGW-AID-RID map information of back buffer memory terminal and safeguards, AID wherein and RID information can be extracted from data message, and AGW information obtains according to the corresponding relation in AGW and tunnel.

Packet forwarding module is used for the data message that forwarding inserts the terminal of this ILCR between broad sense Forwarding plane and IAD, need carry out the encapsulation and the decapsulation in tunnel.As broad as long with router of the prior art.Be forwarded to this PTF after also can be used for the data message that IAD sends to PTF peelled off tunnel encapsulation.

The switching controls module is used for working as the scene that terminal moves to another ILCR coverage, comprises cutting out control unit and incision control unit, and this module is alternatively.Wherein:

Cut out control unit, be used for control terminal and shift out this ILCR, determine incision ILCR according to mobile destination, ILCR sends out handoff request to this incision, the data message forwarding of receiving between transfer period that mails to this terminal is notified the mapping management module to incision ILCR after switching is finished.The mapping management module is deleted the AGW-AID-RID map information of this terminal.

The incision control unit is used for control terminal and inserts incision ILCR.

Identity location register/packet forward function (ILR/PTF) is with the ILR/PTF of embodiment one, and PTF is optional.Authentication center is with the authentication center among the embodiment one.

Chain of command is used for Access Network to terminal attaching ground ILR registration, cancellation and inquiry; Data surface can be used for the data forwarding between IAD and mapping Forwarding plane PTF, and the form of its data message is:

This data message of Interface R3 is the source RID that has encapsulated on the basis of the data message of R1 interface as source address, RIDi as destination address, wherein source RID is the RID for the terminal distribution that sends packet, RIDi is the routing address of visiting ground PTF or Correspondent Node ownership place PTF in the mapping Forwarding plane, can be obtained by the configuration data on the IAD.

Chain of command signaling between above-mentioned IAD and the ILR/PTF and data surface message when roaming, all can be transmitted to ownership ILR/PTF by the R5 interface by visit ILR/PTF.

Perhaps, do not carry out message between above-mentioned IAD and the PTF and transmit, and send to ILCR after by IAD message being done tunnel encapsulation, be transmitted to PTF after peelling off tunnel encapsulation by ILCR.This data message form that transmits between IAD and the ILCR is as follows:

The data message of IAD and ILCR interface has encapsulated on the basis of the data message of R1 interface as the source RID of source address with as the purpose RID of destination address, wherein source RID is the RID that sends the terminal distribution of packet, and purpose RID is the RID of the Correspondent Node that sends to of packet.

IAD is before transmitting data message, also on data message, increased tunnel encapsulation, the tunnel encapsulation mode has a lot, and as L2TPv3, IP-in-IP, MPLS (LDP-based and RSVP-TE based), GRE, MIP and IPsec etc., the present invention is not limited to any mode.

Chain of command is used for transmitting terminal RID update notification when terminal RID changes, also can transmit the link information of terminal and Correspondent Node when switching, and Correspondent Node AID-RID map information transmits terminal terminal off-line notice when the terminal off-line.

Data surface is used for when terminal is switched data message being forwarded to the incision IAD from cutting out IAD, and may there be following form in its message format at the different times that switches:

When cutting out IAD when carrying out RID encapsulation and decapsulation, message format is same as the prior art.

When the incision IAD carried out RID encapsulation and decapsulation, message format was:

Chain of command is used to visit between ILR and the ownership ILR, or transmits the signaling of registration, cancellation and inquiry terminal RID between IAD and the terminal attaching ground ILR between visit ILR, relaying ILR and the ownership ILR; Data surface is used for the data forwarding between IAD and mapping Forwarding plane, the same Interface R3 of the form of its data message.

Data surface is used for the data forwarding between IAD and mapping Forwarding plane PTF, and the form of its data message is with the form of data message between IAD in the Interface R3 and mapping Forwarding plane PTF.

When striding the ILCR switching, the R5 interface still is the interface between the ILCR, is used for the transmission of handover management signaling, the data forwarding between ILCR, and the form of its data message is:

Two layers of header	Tunnel encapsulation	Source RID	Purpose	The IP heading (..., the source	Datagram
							(R5)		?RID	AID, purpose AID ...)	The literary composition payload

● D interface, with the D interface among the embodiment one.

● E interface, optional, there is not the chain of command interface in data surface with the E interface data surface among the embodiment one.

Embodiment three

The structure of present embodiment communication network is still with reference to Fig. 4 a, comprise access business network (W-NSP), connect business network (W-CSN) and broad sense Forwarding plane, the network element that comprises among W-NSP and the W-CSN is also identical, and difference is to realize the residing network element difference of the required new functional module of SILSN.

In the present embodiment, setting up static tunnel between ILCR and the IAD, to network registry or when switching, is that terminal distribution point to RID, to terminal attaching ground ILR register the RID of this terminal by IAD in terminal.The RID that IAD distributes should point to the ILCR that sets up static tunnel with this IAD.When carrying out data message forwarding by IAD local or to Correspondent Node ownership place PTF query communication opposite end RID, when the terminal off-line, IAD is nullified the RID of this terminal to terminal attaching ground ILR.Compare with embodiment two, because the RID that distributes points to the ILCR that sets up static tunnel with IAD, so the form of data message is different, and then IAD and ILCR are different to the processing of data heading.

Wherein:

The general function of present embodiment IAD is identical with embodiment two, and the Register Cancel module that wherein comprises, the function that connects maintenance module, mapping management module and handover module are also identical with corresponding module in embodiment two IADs.RID distribution module that comprises and data forwarding module are distinguished to some extent with embodiment two on concrete the processing, and be as follows:

Processed offline module and embodiment two are basic identical, difference is: because the RID that distributes points to ILCR, the processed offline module is when the IAD terminal off-line of notice opposite end, need be according to terminal AID to connecting the AID that finds these all Correspondent Nodes of terminal in the maintenance module, again from this locality or the server lookup of Correspondent Node AAA ownership place to the positional information of opposite end IAD.Also can be dealt into opposite end ILCR earlier, forward the opposite end IAD to by opposite end ILCR by Correspondent Node RID.

RID distribution module and embodiment two are basic identical, and difference is to point to the ILCR that sets up static tunnel with this IAD for the RID of terminal distribution, and destination address is that the data message of this RID will be by final route to this ILCR.

Data forwarding module, be used between base station and ILCR, carrying out data message forwarding, comprise first retransmission unit and second retransmission unit, the first retransmission unit function of IAD is basic identical among first retransmission unit wherein and the embodiment two, only needs the terminal RID that embodiment two be encapsulated in the data message that IAD sends to the broad sense Forwarding plane is replaced with this access gateway address.Second retransmission unit is used for behind the data message of receiving from ILCR, peel off Correspondent Node RID, access gateway address and the tunnel encapsulation that encapsulates in this data message after, by this IAD and being connected of this terminal mailing to this terminal.Alternatively, whether the AID-RID map information of Correspondent Node exists in the mapping management module in the judgment data message, then is saved in the mapping management module as not existing.In a kind of distortion of present embodiment, be forwarded to IAD after peelling off RID in the downlink data message by ILCR, just can mail to this terminal after IAD only need be peelled off tunnel encapsulation this moment, and the message that IAD sends by terminal comes the AID-RID map information of obtaining communication opposite end.

The general function of the ILCR of present embodiment is identical with ILCR among the embodiment two, it is identical with corresponding module among embodiment two ILCR that the function of module, mapping management module and switching controls module is set up in the tunnel that wherein comprises, distinguish to some extent with embodiment two in the concrete processing of packet forwarding module, as follows:

Packet forwarding module is used at the broad sense Forwarding plane, shines upon the data message of transmitting the terminal that inserts this ILCR between Forwarding plane and the IAD, comprising:

First retransmission unit, be used for after receiving the uplink data messages that IAD is sent, according to the AGW-AID-RID map information in the source AID inquiry local cache, after terminal RID will being replaced with as the access gateway address of source address and peelling off tunnel encapsulation, give mapping Forwarding plane or broad sense Forwarding plane with data message forwarding according to destination address.

Second retransmission unit, be used for after receiving the downlink data message that the broad sense Forwarding plane is sent, according to the AGW-AID-RID map information in the purpose AID inquiry local cache, after purpose RID in the data message replaced with access gateway address and do tunnel encapsulation, the IAD that data message forwarding is inserted to this terminal.In a kind of distortion of present embodiment, after receiving the downlink data message that the broad sense Forwarding plane is sent, peel off the RID that encapsulates in the data message and do tunnel encapsulation, the AGW-AID-RID map information in the inquiry local cache is with the IAD of data message forwarding to this terminal access.

Identity location register/packet forward function (ILR/PTF), authentication center are with ILR/PTF among the embodiment two and authentication center.

Shown in Fig. 4 a, the main interface in this framework is continued to use the interface in the existing WiMAX network,, its function is expanded.Comprise:

● the difference of the Interface R3 function in Interface R3 function and the existing WiMAX network is mainly reflected in following aspect:

Chain of command is used for the RID to the ground ILR registration of ownership terminal, cancellation and inquiry terminal; Data surface is used for the data forwarding between IAD and mapping Forwarding plane PTF, or sends to ILCR after by IAD message being done tunnel encapsulation, is transmitted to PTF after peelling off tunnel encapsulation by ILCR.Its function is identical with embodiment two with message format.

The data surface of Interface R3 also is used for the data forwarding between IAD and ILCR.Its message format can be:

This data message encapsulates on the basis of the data message of R1 interface as the AGW address of source address with as the purpose RID of destination address, and purpose RID is the RID of the Correspondent Node that sends to of packet.

Become in the example at one of present embodiment, the message format of data forwarding also can be identical with embodiment two between IAD and ILCR, and the RID that sends the terminal of packet is encapsulated as source address, and is as follows:

At this moment, ILCR is still pointed in the RID address that IAD distributes, but first retransmission unit in the IAD no longer is encapsulated in this access gateway address in the uplink data messages as source address, and its function is identical with first retransmission unit of embodiment two IADs.And the function of the packet forwarding module on the ILCR can be identical with the packet forwarding module among embodiment two ILCR, need not to carry out the replacement between AGW address and the source RID, certainly still can peel off RID in the message by ILCR, IAD does not just need to peel off has not received the RID in the message.

● Interface R4, with the Interface R4 among the embodiment two.

● the R5 interface, with the R5 interface among the embodiment two.

● D interface, with the D interface among the embodiment two.

● E interface, with the E interface among the embodiment two.

Embodiment four

In the present embodiment, set up dynamic tunnel between identity position core router (ILCR) and the IAD based on terminal, in terminal to network registry or when switching, by IAD is terminal distribution RID, RID to the ILR registration terminal, inquire about the AID-RID map information by IAD to ILR when carrying out data message forwarding, when the terminal off-line, nullify the RID of terminal to ILR by IAD.

The communication network of the communication network of present embodiment and embodiment two is basic identical, be to set up dynamic tunnel between IAD and the ILCR just, be that the functional entity " module is set up in the tunnel " of ILCR is set up the tunnel based on terminal in the terminal access procedure, this moment, ILCR no longer needed the mapping management module, and the switching controls module does not need to carry out the maintenance of AGW-AID-RID map information yet.In addition corresponding functional entity is identical among other functional entitys of this framework and effect thereof and the embodiment two.

Embodiment five

In the present embodiment, setting up the dynamic tunnel based on terminal between identity position core router (ILCR) and the IAD, to network registry or when switching, is terminal distribution RID and to the RID of ILR registration terminal by IAD in terminal.The RID that IAD distributes should point to the ILCR that this IAD is connected to.When carrying out data message forwarding, inquire about the AID-RID map information to ILR, when the terminal off-line, nullify the RID of terminal to ILR by IAD by IAD.

Communication network with identify label and position separation architecture that present embodiment five is realized based on the WiMAX system and the communication network of embodiment three are basic identical, be to set up dynamic tunnel between IAD and the ILCR just, be that the functional entity " module is set up in the tunnel " of ILCR is set up the tunnel based on terminal in the terminal access procedure, no longer need mapping management module and switching controls module to carry out the maintenance of AGW-AID-RID map information among the ILCR this moment.In addition corresponding functional entity is identical among other functional entitys of this framework and effect thereof and the embodiment three.

Embodiment six

In the present embodiment, set up dynamic tunnel between identity position core router (ILCR) and the IAD based on terminal, to network registry or when switching, is terminal distribution RID and to the RID of ILR registration terminal (also can be described as the AID-RID map information of registration terminal) by ILCR in terminal.The RID that ILCR distributes should point to this ILCR.When carrying out data message forwarding, inquire about the AID-RID map information to ILR, when the terminal off-line, nullify the RID of terminal to ILR by ILCR by ILCR.

Present embodiment comprises following a few part based on the communication network with identify label and position separation architecture that the WiMAX system realizes:

IAD, its function is same as the prior art.

Identity position core router (ILCR), be arranged in WiMAX core business network (W-CSN), be used to terminal distribution RID, RID to terminal attaching ILR registration, cancellation and inquiry terminal, the link information of maintenance terminal and Correspondent Node, the session connection of maintenance terminal, the AID-RID map information of maintenance terminal and Correspondent Node, and the route and the forwarding that realize data message.ILCR also is used for cooperating the realization terminal to stride the switching of ILCR with other ILCR.

As shown in figure 11, in the present embodiment, ILCR comprises the following functional entity relevant with expanded function:

Module is set up in the tunnel, is used to set up the tunnel between IAD and the ILCR, is terminal distribution RID, and AID and this RID of terminal sent to mapping management module and Register Cancel module; Present embodiment adopts the mode of dynamically setting up the tunnel, promptly sets up the tunnel based on terminal in the terminal access procedure.

Connect maintenance module, the link information that is used to preserve terminal and Correspondent Node; Know the terminal off-line or shift out the back or communicate by letter and stop the link information of back this terminal of deletion and Correspondent Node with Correspondent Node; After knowing the Correspondent Node off-line or stopping, delete the link information of this Correspondent Node and terminal with terminal communication.This module is optionally, if preserve the correspondence relationship information of terminal and Correspondent Node AID-RID in the mapping management module, connecting maintenance module can ignore.

The mapping management module is with the mapping management module of ILCR among the embodiment one.

The processed offline module is used for when determining the terminal off-line that inserts, and notifies Register Cancel module, mapping management module and is connected maintenance module, alternatively, also inquires about the positional information of opposite end ILCR, this terminal off-line of notice opposite end ILCR.When definite Correspondent Node off-line, notice mapping management module and be connected maintenance module.The processed offline module can be according to the real-time testing mechanism of stream, or waits to determine whether off-line of terminal according to the relevant signaling of receiving the terminal off-line, can notify or flows mode such as real-time testing mechanism and determine corresponding communication opposite end off-line according to the terminal off-line of receiving.The method of processed offline module inquiry opposite end ILCR positional information can be to find the AID of all Correspondent Nodes earlier in the link information that connects terminal that maintenance module preserves and Correspondent Node according to terminal AID, find corresponding RID with the AID that finds in the Correspondent Node AID-RID map information of mapping management module preservation again, the RID that finds is the positional information of opposite end ILCR.

Packet forwarding module has the function of the packet forwarding module of ILCR among the embodiment one, comprises first retransmission unit and second retransmission unit.Just in the present embodiment, the uplink data messages that first retransmission unit is received is that IAD is sent, other first retransmission unit and second retransmission unit are judged also whether terminal AID has been kept at the corresponding relation of Correspondent Node AID in the data message of receiving and are connected in the maintenance module, as do not have, be saved in the connection maintenance module.

The switching controls module comprises cutting out control unit and incision control unit, wherein:

Cut out control unit and be used to realize control that terminal is cut out, when terminal moves, determine the incision ILCR that terminal will move to according to the destination of moving, move to finish back notice mapping management module and to be connected this terminal of maintenance module and cut out, the data message forwarding of receiving between transfer period that mails to this terminal arrives cuts ILCR.Alternatively, the link information of this terminal and Correspondent Node and/or the AID-RID map information of Correspondent Node are sent to incision ILCR.

The incision control unit, be used to realize control to the terminal incision,,, AID and this RID of this terminal sent to the Register Cancel module and be saved in the mapping management module when another ILCR moves to the coverage of this ILCR in terminal for terminal distribution is pointed to the RID of this ILCR; Alternatively, the positional information (querying method is with the processed offline module) of inquiry opposite end ILCR sends terminal RID update notification to opposite end ILCR, carries the AID-RID map information of this terminal.

Identity location register/packet forward function (ILR/PTF) is with the ILR/PTF among the embodiment one.Authentication center is with the authentication center among the embodiment one.

● Interface R3 is the interface between IAD and the W-CSN, and when roaming, Interface R3 is the interface between IAD and the visit W-CSN.Interface function is identical with Interface R3 function in the existing WiMAX network.

● Interface R4 is the interface between the IAD, and interface function is identical with Interface R4 function in the existing WiMAX network.

Chain of command is used for the RID of ILCR to terminal attaching ground ILR registration, cancellation terminal; Data surface can be used for the data forwarding between ILCR and mapping Forwarding plane PTF, the same E interface of the form of its data message.

When striding the ILCR switching, the R5 interface still is the interface between the ILCR, be used for the transmission of handover management signaling, when changing, terminal RID also is used for transmitting terminal RID update notification to opposite end ILCR, also can be used for cutting out the link information of ILCR, the AID-RID map information of Correspondent Node to incision ILCR transmission terminal and Correspondent Node.Data surface is used for the data forwarding between ILCR, and the form of its data message is:

● D interface is with the D interface among the embodiment one.

● E interface is the interface between ILCR and the mapping Forwarding plane.

Chain of command is used for the RID of ILCR to ILR registration, cancellation and inquiry terminal.User's face is used for the forwarding of terminal data message between ILCR and mapping Forwarding plane PTF, and the form of the data message of its interface is:

The data message of E interface has encapsulated on the basis of the data message of R1 interface as the source RID of source address with as the RIDi of destination address, wherein source RID is the RID that sends the terminal of packet, RIDi is the routing address of visiting ground PTF or Correspondent Node ownership place PTF in the mapping Forwarding plane, can be obtained by the configuration data on the ILCR.

Embodiment seven

The schematic diagram of Fig. 4 b communication network that to be present embodiment realize based on the Wimax network architecture (also can be called realized identify label put the WiMAX grid that separates) with mark with identify label and position separation architecture, this communication network comprises access business network (W-ASN), connect business network (W-CSN) and broad sense Forwarding plane, have AAA agency or server (AAA Proxy/Server) among the W-CSN, accounting server, original network element in the Wimax frameworks such as interconnecting gateway equipment, also be provided with identity location register (ILR)/packet forward function (PTF), the ILR/PTF among each W-CSN has constituted the mapping Forwarding plane.HA and/or W-core router can keep among the W-CSN, also its function also can be transferred to IAD and realize.Comprise base station and IAD among the W-ASN, on the basis of the functional entity that IAD had of IAD wherein in the Wimax framework, expanded and realized the required new function of SILSN.In addition, the broad sense Forwarding plane in this communication network comprises a plurality of routers of supporting RID route and forwarding, has the data surface interface between W-ASN and the broad sense Forwarding plane, is expressed as the D1 interface.Can have the data surface interface between W-CSN and the broad sense Forwarding plane, be expressed as D2, PTF sends to the broad sense Forwarding plane by this interface with data message, re-sends to the IAD that Correspondent Node inserts by the broad sense Forwarding plane.

In the present embodiment, do not have ILCR in the WiMAX network, IAD is as external data channel end points.To network registry registration or when switching, is that terminal distribution point to the RID of this IAD and to the RID of ILR registration terminal by IAD in terminal.According to service needed, IAD can be one or more RID of a terminal distribution special use, also can be the identical RID of a plurality of terminal distribution.When carrying out data message forwarding, to ILR inquiry AID-RID map information, when the terminal off-line, nullify the RID (also can be described as AID-RID map information from terminal to ILR that nullify) of terminal to ILR by IAD by IAD.

In the communication network of present embodiment:

IAD is arranged in WiMAX access business network (W-ASN), be used to user terminal that access service and control are provided, point to the RID of this IAD for terminal distribution, RID to the ILR registration of terminal attaching ground, cancellation and inquiry terminal, the link information of maintenance terminal and Correspondent Node, the AID-RID map information of maintenance terminal and Correspondent Node is realized the route and the forwarding of data message, and cooperates the realization terminal to stride the switching of AGW with other IADs.

In the present embodiment, IAD comprises the following function entity:

The RID distribution module is with the RID distribution module of IAD among the embodiment two.

The Register Cancel module is with the Register Cancel module of embodiment two IADs.

Connect maintenance module, with the connection maintenance module of IAD among the embodiment two.

The mapping management module is with the mapping management module of IAD among the embodiment two.

Data forwarding module comprises first retransmission unit and second retransmission unit:

First retransmission unit, after being used to receive the uplink data messages of sending the base station that comprises terminal AID and Correspondent Node AID, as inquiring the RID of Correspondent Node in the mapping management module, the RID of this terminal and Correspondent Node is encapsulated in as source, destination address sends to the broad sense Forwarding plane in the data message; As the RID of inquiry, to the RID of Correspondent Node ownership place ILR query communication opposite end less than Correspondent Node; , the AID-RID of the Correspondent Node that inquires is saved in the mapping management module; This moment is to the data message, can behind the terminal RID that has encapsulated as source address, be forwarded to PTF, also can first data cached message, after inquiring the RID of Correspondent Node, again the RID of this terminal and Correspondent Node is encapsulated in as source, destination address and is forwarded to the broad sense Forwarding plane in the data message.

Second retransmission unit is used for downlink data message decapsulation that the broad sense Forwarding plane is sent, peel off RID wherein after, by this IAD and being connected of this terminal mailing to this terminal; Alternatively, whether the AID-RID map information of Correspondent Node exists in the mapping management module in the judgment data message, then is saved in the mapping management module as not existing.

Handover module is with the handover module of IAD among the embodiment two.

Shown in Fig. 4 b, the main interface in this framework is continued to use the interface in the existing WiMAX network, and its function is expanded.Comprise:

Chain of command is used for the RID of IAD to the ILR registration of terminal attaching ground, cancellation and inquiry terminal; Data surface is used for the data forwarding between IAD and mapping Forwarding plane, and the form of its data message is:

The data message of Interface R3 is newly to have encapsulated three layers of header on the basis of the data message of R1 interface, source address in three layers of new header is source RID, destination address is RIDi, wherein source RID is the RID that sends the terminal of packet, RIDi is the routing address of visiting ground PTF or Correspondent Node ownership place PTF in the mapping Forwarding plane, can be obtained by the configuration data on the IAD.

Chain of command signaling between above-mentioned IAD and the ILR and data surface message when roaming, all can be transmitted to ownership ILR by the R5 interface by visit ILR.

Chain of command is used for transmitting terminal RID update notification when terminal RID changes, also can transmit the link information of terminal and Correspondent Node when switching, and Correspondent Node AID-RID map information transmits terminal off-line notice when the terminal off-line.

Two layers of newspaper	The tunnel envelope	Source RID	Purpose	The IP heading (..., the source	Data message is clean
						Head	Dress (R4)		?RID	AID, purpose AID ...)	Lotus

● the D1 interface is the interface between IAD and the broad sense Forwarding plane, is used for the forwarding of terminal data message between IAD and broad sense Forwarding plane.The form of the data message of its interface is:

The data message of D1 interface is newly to have encapsulated three layers of header on the basis of the data message of R1 interface, comprise source RID and purpose RID in these three layers of new headers, wherein source RID is the RID for the terminal distribution that sends packet, and purpose RID is the RID that distributes for Correspondent Node that packet sends to.

● the D2 interface is the interface between ownership PTF and the broad sense Forwarding plane, is used for the forwarding of terminal data message between ownership PTF and broad sense Forwarding plane.The form of the data message of its interface is with the D1 interface.

In above-mentioned all system architecture networks of the present invention (being called for short this architecture network), AID identifies a terminal user ID, the inner employing of this architecture network AID identification terminal user.For supporting conventional terminal, the AID of this architecture network can adopt the address of IPV4/IPv6 in the legacy network.

In this architecture network, in the data message process of transmitting, IAD or ILCR can set up according to the real-time testing mechanism of stream, the link information of new terminal and Correspondent Node more.

In this architecture network, RID can adopt the IPV4/IPv6 address format that router is generally supported in the existing tradition net, indicates the ILCR position at current terminal place.The action scope of RID is at the broad sense Forwarding plane of this architecture network backbone network.

Fig. 5, Fig. 6 are on the basis of embodiment one communication network, the flow chart of accessing terminal to network, and this terminal can be a conventional terminal.

Fig. 5 is suitable for the scene with the direct obtaining communication of IAD opposite end AID, and present embodiment is that example illustrates the flow process that start networks with simple IP terminal (promptly not supporting the terminal of mobile IP), and its concrete steps are described below:

Step 501, starting up of terminal carries out the access authentication flow process of terminal alternately by base station, AGW, visit aaa server and ownership aaa server.In this flow process, the ownership aaa server sends to AGW with the static signing IP address of terminal;

Step 502, terminal initial Business Stream visioning procedure.In this flow process, can create the pre-provisioned service flow of terminal simultaneously;

Step 503, terminal is obtained the IP address by DHCP (DHCP) flow process.This IP address is the AID of this terminal;

In another embodiment, AID also can be different from the IP address, and this signatory AID can be kept in the terminal attaching aaa server equally, sends to AGW by the access authentication flow process.

Step 504 is triggered by step 503, obtains in the DHCP flow process of IP address in terminal, and AGW need set up flow process to the tunnel that ILCR initiates AGW and ILCR;

Wherein the tunnel between AGW and the ILCR can be in many ways, and as L2TPv3, IP-in-IP, MPLS (LDP-based and RSVP-TE based), GRE, MIP and IPsec etc., the present invention is not limited to any specific tunnel style.When adopting MIP, the establishment in tunnel, maintenance are identical with existing WiMAX network.

When step 504a, ILCR set up in the tunnel, be this terminal distribution RID, its RID points to this ILCR.ILCR preserves the mapping relations of this terminal AID and RID;

In the change example one of embodiment one, the Register Cancel module is at ILCR, at this moment, initiates register flow path by ILCR to this terminal attaching ground ILR in this step.

Step 504b, ILCR will set up in the tunnel for the RID of terminal distribution and be notified to AGW in the flow process;

Step 505 is triggered by step 504, and when the tunnel of setting up between AGW and the ILCR, ILCR need obtain key information to the authentication of ownership aaa server;

In the change example one of embodiment one, if the Register Cancel module is realized that by ILCR then in this step, can trigger the AID register flow path of initiating to terminal attaching ground ILR to ILCR simultaneously, registration ILCR is the RID of terminal distribution;

Step 506 does not take place in step 503 if pre-provisioned service flow is created, then can carry out in this step.Also may carry out the modification of initial service flow or pre-provisioned service flow this moment;

Step 507 is realized by AGW as if the Register Cancel module, then needs to carry out this step.AGW initiates register flow path to terminal attaching ground ILR, and registration ILCR is the RID of terminal distribution;

Step 508, after ownership ILR receives the AID register requirement of AGW, and the mapping relations of preserving the current AID-RID of terminal;

When the AID register flow path is when carrying out in step 505, this step can be in the directly execution of step 505 back.

At this moment, the successful access network of terminal, and can begin to carry out the data message transmission.

Step 509, terminal and Correspondent Node are carried out the data message transmission;

After step 509a, AGW receive the data message of terminal and Correspondent Node, obtain the AID information in the message, set up the link information (being the mapping of terminal AID and Correspondent Node AID) of terminal and Correspondent Node, and be buffered in this locality.

In this step, AGW also can check the terminal and the Correspondent Node link information of local cache earlier, if there is not the link information of terminal and this Correspondent Node, creates the two link information of buffer memory also again;

Step 509b, ILCR receive that terminal sends behind the data message of Correspondent Node, according in this data message as the AID-RID map information in the AID inquiry local cache of the Correspondent Node of destination address, as find the RID of this Correspondent Node, with the RID of this Correspondent Node as destination address, the RID of this terminal is as source address, be encapsulated in this data message (as being encapsulated in the three-tier message head that this data message newly adds), the data message forwarding after will encapsulating then is to the broad sense Forwarding plane; As not finding the RID of Correspondent Node, data message is the PTF that is forwarded to the mapping Forwarding plane after the tunnel encapsulation, and to the RID of Correspondent Node ownership place ILR query communication opposite end;

ILCR peels off the RID that encapsulates in this data message after receiving that Correspondent Node sends to the data message of the terminal that inserts this ILCR, mails to this terminal by this ILCR with being connected of this terminal.

Fig. 6 be suitable for the direct obtaining communication of ILCR opposite end AID after reinform the scene of IAD, become the communication network of example based on second of embodiment one.Present embodiment is that example illustrates the flow process that start networks with simple IP terminal (promptly not supporting the terminal of mobile IP), and its concrete steps are described below:

Step 601 is to step 608, with step 501 to step 508.

Step 609, terminal and Correspondent Node are carried out the data message transmission.

Step 609a is with step 509b.

After step 609b, ILCR receive the data message of terminal and Correspondent Node, obtain the AID information in the message, set up terminal and Correspondent Node link information (mapping of AID1-AID2), and be buffered in this locality.In this step, ILCR also can check the terminal and the Correspondent Node link information of local cache earlier, if there is not the link information of terminal and this Correspondent Node, creates the two link information of buffer memory also again.

Step 610, when there is not the link information of terminal and this Correspondent Node in ILCR this locality, the terminal that ILCR obtains to AGW notice and the link information (mapping of AID1-AID2) of Correspondent Node.This link information of AGW local cache.

Fig. 7 is on the basis of present embodiment two, three, the flow chart of accessing terminal to network, and this terminal can be a conventional terminal.

Fig. 7 be suitable for AGW and ILCR between before user-network access the static scene of setting up the tunnel, present embodiment be the flow process that example illustrates the networking of starting shooting with simple IP terminal (promptly not supporting the terminal of mobile IP), its concrete steps are described below:

Step 701 is after AGW/ILCR powers on, according to strategy or be configured in and set up static tunnel between AGW and the ILCR;

Step 702, starting up of terminal carries out the access authentication flow process of terminal alternately by base station, AGW, visit aaa server and ownership aaa server.In this flow process, the ownership aaa server sends to AGW with the static signing IP address of terminal;

Step 703, terminal initial Business Stream visioning procedure.In this flow process, can create the pre-provisioned service flow of terminal simultaneously;

Step 704, terminal is obtained the IP address by the DHCP flow process.This IP address is the AID of this terminal;

Step 704a, in obtaining IP address process, AGW is this terminal distribution RID, and RID points to this AGW in embodiment two, and RID points to the ILCR that has static tunnel with this AGW in embodiment three, and AGW preserves the mapping relations of this terminal AID and RID;

Step 705 does not take place in step 703 if pre-provisioned service flow is created, then can carry out in this step.Also may carry out the modification of initial service flow or pre-provisioned service flow this moment.

Step 706, the AID register flow path that AGW initiates to terminal attaching ground ILR, registration AGW is the RID of terminal distribution;

Step 707, after ownership ILR receives the register requirement of AGW, and the mapping relations of preserving the current AID-RID of terminal.

Step 708, terminal and Correspondent Node are carried out the data message transmission.

After step 708a, AGW receive the data message of terminal and Correspondent Node, obtain the AID information in the message, set up terminal and Correspondent Node link information (mapping of AID1-AID2), and be buffered in this locality.In this step, AGW also can check the terminal and the Correspondent Node link information of local cache earlier, if there is not the link information of terminal and this Correspondent Node, creates the two link information of buffer memory also again.

During based on the communication network of embodiment two, after AGW receives that terminal sends to the data message of Correspondent Node, according in this data message as the AID-RID map information in the AID inquiry local cache of the Correspondent Node of destination address, as find the RID of this Correspondent Node, with the RID of this Correspondent Node as destination address, the RID of this terminal is as source address, be encapsulated in this data message (as being encapsulated in the three-tier message head that this data message newly adds), the data message forwarding after will encapsulating then is to ILCR; As not finding the RID of Correspondent Node, be forwarded to the mapping Forwarding plane after data message done tunnel encapsulation, and the RID of notice mapping management module query communication opposite end.

AGW peels off the RID that encapsulates in this data message after receiving data message from Correspondent Node, revert to the form of the data message that Correspondent Node sends after, mail to this terminal by this AGW with being connected of this terminal.

It is the data message of source address and destination address that ILCR transmits with the RID form in AGW and broad sense Forwarding plane.

During based on the communication network of embodiment three, after AGW receives the data message of sending base station (promptly inserting the terminal of this ILCR), according in this data message as the AID-RID map information in the AID inquiry local cache of the Correspondent Node of destination address, as find the RID of this Correspondent Node, with the RID of this Correspondent Node as destination address, the address of this AGW is as source address, be encapsulated in this data message (as being encapsulated in the three-tier message head that this data message newly adds), the data message forwarding after will encapsulating then is to ILCR; As not finding the RID of Correspondent Node, be forwarded to the mapping Forwarding plane after data message done tunnel encapsulation, and the RID of notice mapping management module query communication opposite end.

After AGW receives data message from ILCR, if ILCR does not peel off the RID that encapsulates in this data message, then remove the RID that encapsulates in this data message, revert to the form of the data message that Correspondent Node sends after, mail to this terminal by this AGW with being connected of this terminal.

ILCR peels off the RID that encapsulates in the data message after receiving the data message that external network sends, according to the AGW-AID-RID map information in the purpose AID inquiry local cache, the AGW that data message forwarding is inserted to this terminal then; Perhaps,, then data message forwarding is arrived the AGW that this terminal inserts with the address that the purpose RID in the data message replaces with AGW according to the AGW-AID-RID map information in the purpose AID inquiry local cache.

After ILCR receives data message from AGW,, the AGW address in the source address is replaced with the RID of terminal, then data message forwarding is gone out according to the AGW-AID-RID map information in the source AID inquiry local cache.

On the foregoing description four, five bases, the flow chart of starting up of terminal access network, this terminal can be the flow process that conventional terminal can use Fig. 7 equally, just step 701 requirements of process of setting up static tunnel changes the foundation at step 704 back dynamic tunnel into, can be triggered to the identifying procedure of aaa server simultaneously, as step 505.Other steps are identical with the step of Fig. 7.No longer describe in detail herein.

Fig. 8 is on the communication network basis of embodiment six, the flow chart of accessing terminal to network, and this terminal can be a conventional terminal.

Fig. 8 be suitable for AGW and ILCR between setting up the scene of dynamic tunnel, present embodiment be the flow process that example illustrates the networking of starting shooting with simple IP terminal (promptly not supporting the terminal of mobile IP), its concrete steps are described below:

Step 801 is to step 804, with step 501 to step 504.

Step 805 is triggered by step 804, and when the tunnel of setting up between AGW and the ILCR, ILCR need obtain key information to the authentication of ownership aaa server.

Step 806 is with step 506.

Step 807, the AID register flow path that ILCR initiates to ownership ILR, registration ILCR is the RID of terminal distribution.

There is not inevitable ordinal relation between step 807 and the step 806.

Step 808 is with step 508.

Step 809, terminal and Correspondent Node are carried out the data message transmission.

Step 809a is with step 509b.

After step 809b, ILCR receive the data message of terminal and Correspondent Node, obtain the AID information in the message, set up terminal and Correspondent Node link information (mapping of AID1-AID2), and be buffered in this locality.In this step, ILCR also can check the terminal and the Correspondent Node link information of local cache earlier, if there is not the link information of terminal and this Correspondent Node, creates the two link information of buffer memory also again.

Fig. 5, Fig. 6, Fig. 7 and Fig. 8 are example with traditional simple IP terminal of not supporting mobile IP all, terminal for the mobile IP of tradition, start networking flow process is similar with it, just obtains terminal and obtains the mode of IP address and change mobile IP mode into by the DHCP mode, is not described in detail in this.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

Describe for simplifying, the above not only is suitable for and the WiMAX network, also goes for other mobile communications networks.The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. communication network that the identify label (AID) that realizes based on the Wimax network architecture separates with the position, comprise in the Wimax network architecture access business network be connected business network, comprise base station and IAD in the described access business network, it is characterized in that, comprise identity position core router (ILCR) and identity location register (ILR) in the described connection business network, this communication network also comprises the broad sense Forwarding plane that is used for opsition dependent sign (RID) route and transmits data message between ILCR, wherein:

2. communication network as claimed in claim 1 is characterized in that, described IAD comprises: connect maintenance module and data forwarding module, wherein:

3. communication network as claimed in claim 2 is characterized in that:

4. communication network as claimed in claim 1 or 2 is characterized in that, described ILCR comprises that the tunnel sets up module, mapping management module and packet forwarding module, wherein:

Described packet forwarding module, after being used to receive that terminal and Correspondent Node do not belong to the uplink data messages of same ILCR, the RID of the Correspondent Node that will inquire from mapping management module or Correspondent Node ownership place ILR and the RID of terminal are encapsulated in the data message that comprises terminal AID and Correspondent Node AID together, through broad sense Forwarding plane route and be forwarded to opposite end ILCR; And, send to terminal after peelling off RID wherein with the downlink data message decapsulation that the broad sense Forwarding plane is sent.

5. communication network as claimed in claim 4 is characterized in that:

6. communication network as claimed in claim 4 is characterized in that:

7. communication network as claimed in claim 4 is characterized in that, described packet forwarding module comprises first retransmission unit and second retransmission unit, wherein:

8. communication network as claimed in claim 7 is characterized in that:

9. communication network as claimed in claim 2 is characterized in that:

10. communication network as claimed in claim 4 is characterized in that:

11. communication network as claimed in claim 10 is characterized in that:

12. communication network as claimed in claim 4 is characterized in that:

13. communication network as claimed in claim 1 is characterized in that:

14. communication network as claimed in claim 1 is characterized in that:

15. communication network as claimed in claim 1 is characterized in that:

16. communication network that the identify label (AID) that realizes based on the Wimax network architecture separates with the position, comprise in the Wimax network architecture access business network be connected business network, comprise base station and IAD in the described access business network, it is characterized in that, comprise identity position core router (ILCR) and identity location register (ILR) in the described connection business network, this communication network also comprises the broad sense Forwarding plane that is used for opsition dependent sign (RID) route and transmits data message between ILCR, wherein:

17. communication network as claimed in claim 16 is characterized in that, described ILCR comprises that the tunnel sets up module, Register Cancel module, mapping management module and packet forwarding module:

18. communication network as claimed in claim 17 is characterized in that, described ILCR also comprises connection maintenance module, processed offline module and mapping management module, wherein:

19. communication network as claimed in claim 18 is characterized in that:

20., it is characterized in that described packet forwarding module comprises first retransmission unit and second retransmission unit as claim 17 or 18 or 19 described communication networks, wherein:

21. communication network as claimed in claim 20 is characterized in that:

22. communication network as claimed in claim 20 is characterized in that:

23., it is characterized in that as claim 17 or 18 or 19 described communication networks, also comprise the switching controls module, this switching controls module comprise again cut out control unit and the incision control unit, wherein:

24. communication network as claimed in claim 23 is characterized in that:

25. communication network as claimed in claim 16 is characterized in that:

26. communication network as claimed in claim 16 is characterized in that:

27. communication network that the identify label (AID) that realizes based on the Wimax network architecture separates with the position, comprise in the Wimax network architecture access business network be connected business network, comprise base station and IAD in the described access business network, it is characterized in that, comprise identity location register (ILR) in the described connection business network, this communication network also comprises the broad sense Forwarding plane that is used for opsition dependent sign (RID) route and transmits data message, wherein:

28. communication network as claimed in claim 27 is characterized in that, described IAD comprises RID distribution module, Register Cancel module, mapping management module and data forwarding module, wherein:

29. communication network as claimed in claim 28 is characterized in that, described IAD also comprises connection maintenance module and processed offline module, wherein:

30. communication network as claimed in claim 29 is characterized in that:

31. communication network as claimed in claim 28 is characterized in that:

32. communication network as claimed in claim 27 is characterized in that:

33. communication network as claimed in claim 27 is characterized in that,

34. communication network as claimed in claim 33 is characterized in that:

35. communication network as claimed in claim 27 is characterized in that,

36. communication network as claimed in claim 35 is characterized in that,

37., it is characterized in that as the described communication network of arbitrary claim in the claim 32 to 36:

38., it is characterized in that as the described communication network of arbitrary claim in the claim 32 to 36:

39., it is characterized in that as the described communication network of arbitrary claim in the claim 32 to 36:

40. communication network as claimed in claim 31 is characterized in that:

41. communication network as claimed in claim 27 is characterized in that:

42. a starting up of terminal inserts the method as communication network as described in claim 1 or 16, comprising:

43. method as claimed in claim 42 is characterized in that:

44., it is characterized in that as claim 42 or 43 described methods:

45., it is characterized in that as claim 42 or 43 described methods:

46. a starting up of terminal inserts the method as communication network as described in the claim 27, comprising:

47. method as claimed in claim 46 is characterized in that:

48. method as claimed in claim 46 is characterized in that:

49., it is characterized in that as claim 46 or 47 or 48 described methods:

50., it is characterized in that as claim 46 or 47 or 48 described methods: