CN102202286A - Method for terminal access in heterogeneous network, and method and equipment for heterogeneous network switching - Google Patents
Method for terminal access in heterogeneous network, and method and equipment for heterogeneous network switching Download PDFInfo
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Abstract
The invention discloses a method for terminal access in a heterogeneous network, and a method and equipment for heterogeneous network switching. The method for terminal access in the heterogeneous network comprises the steps of: receiving a proxy binding notification message, wherein the proxy binding notification message carries an updated proxy binding record and is sent by a local mobility anchor, the updated proxy binding record comprises proxy binding information registered for the terminal by terminal-associated mobile access gateways; and establishing a data forwarding correlation between the terminal-associated mobile access gateways according to the proxy binding information and a forwarding correlation record stored in the terminal. In the embodiment of the invention, the terminal is connected to a plurality of mobile access gateways through a plurality of interfaces, the intercommunication of the plurality of interfaces is implemented through the proxy binding notification, so that the terminal can send and receive IP messages by using any of the interfaces to realize flexible and efficient multi-interface/multi-homing management.
Description
Technical field
The embodiment of the invention relates to communication technical field, relates in particular to the method that terminal inserts in a kind of heterogeneous network, the method and apparatus that heterogeneous network switches.
Background technology
Mobile communication allows the user can set up session with other people in moving process or accepts session invitation from other people, and can keep the session of having set up in moving process.Mobile communication can be used multiple wireless technology, as global system for mobile communications (Global System for Mobile Communications; Be called for short: GSM), Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access; Be called for short: WCDMA), worldwide interoperability for microwave inserts (Worldwide Interoperability for Microwave Access; Be called for short: Wimax) and WLAN (Wireless Local Area Networks; Be called for short: WLAN) etc., with the corresponding various communication networks of various wireless technologys also development thereupon.These networks have also correspondingly used the different network architectures because used different wireless access, are commonly referred to heterogeneous network.
The Internet engineering duty group (the Internet Engineering Task Force; Be called for short: IETF) formulated Mobile Internet Protocol (Mobile Internet Protocol; Be called for short: MIP), MIP has switching, the stream mobility functions such as (flow mobility) between many interfaces, many forwarding address, the distinct interface.The condition that realizes MIP is that terminal is supported MIP, supports that the terminal of MIP can be to Care-of Address (Care-ofAddress; Be called for short: CoA) binding manages, and by being arranged on the Care-of Address binding on the home agent, binding logo, the traffic identifier of expansion, can realize each function of MIP.Because the MIP more complicated is supported difficulty of MIP in existing most terminal, therefore, IETF has formulated proxy-mobile IP (Proxy mobile IP again; Be called for short: PMIP).PMIP can be when terminal not be supported MIP, provides the function of MIP by the network equipment, realizes moving freely of terminal, keeps the continuity of session.
In the heterogeneous network that uses PMIP, mobile node (Mobile Node; Be called for short: MN) be connected to a plurality of Mobile Access Gateways (Mobile Access Gateway by a plurality of interfaces; Be called for short: MAG), and each MAG is home network prefix of interface assignment, and each interface all can only be received and dispatched same network prefix, does not realize complete many ownership function.
In addition, in the heterogeneous network of existing use PMIP, when terminal MN goes up switching between the distinct interface, need to revise terminal IP stack and IP operation flow process, revise terminal IP stack and IP operation requirements of process and carry out one by one on each terminal, implementation procedure is complicated and difficult.
Summary of the invention
The invention provides the method and apparatus that terminal inserts in a kind of heterogeneous network, when using the heterogeneous network of PMIP in order to a plurality of interfaces accesses of terminal in the solution prior art, do not realize the defective of complete many ownership function, realize communicating with each other between a plurality of interfaces, make terminal can use any one interface transmitting-receiving IP message, realize flexible and efficient many interfaces/many ownership management.
On the one hand, provide the method that terminal inserts in a kind of heterogeneous network, having comprised:
The agent binding notice message that carries the agent binding record after the renewal that receives that the local mobile anchor point sends, the agent binding record after the described renewal comprises that the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration;
According to the forwarding associated record of described agent binding information and self preservation, set up the data forwarding association between the relevant Mobile Access Gateway of described terminal.
On the other hand, provide the method that terminal inserts in a kind of heterogeneous network, having comprised:
Send the agent binding notice message that the agent binding after carrying renewal writes down to the relevant Mobile Access Gateway of described terminal, the agent binding record after the described renewal comprises that the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration.
On the other hand, provide a kind of Mobile Access Gateway, having comprised:
The announcement receiver module, be used to receive that the local mobile anchor point sends carries the agent binding notice message of the agent binding record after the renewal, the agent binding record after the described renewal comprises that the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration;
Relating module is used for agent binding information that receives according to described announcement receiver module and the forwarding associated record of self preserving, and sets up the data forwarding association between the relevant Mobile Access Gateway of described terminal.
On the other hand, provide a kind of local mobile anchor point, having comprised:
The announcement sending module, be used for sending to the relevant Mobile Access Gateway of described terminal the agent binding notice message of the agent binding record after carrying renewal, the agent binding record after the described renewal comprises that the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration.
The method and apparatus that terminal inserts in the heterogeneous network provided by the invention, when the agent binding record of the terminal of having preserved on the local mobile anchor point takes place to upgrade, Mobile Access Gateway receives that the local mobile anchor point sends carries the agent binding notice message of the agent binding record after the renewal, can set up data forwarding association between the relevant Mobile Access Gateway of terminal according to agent binding information wherein, when terminal is connected to a plurality of Mobile Access Gateway by a plurality of interfaces, realize communicating with each other between a plurality of interfaces by the agent binding notice message, make terminal can use any one interface transmitting-receiving IP message, realized flexible and efficient many interfaces/many ownership management.
In addition, the method and apparatus that the embodiment of the invention also provides a kind of heterogeneous network to switch, in order to solve the switching problem of terminal, under the situation of not revising terminal IP stack and IP operation flow process, realize the switching between the terminal distinct interface at the heterogeneous network that uses PMIP.
On the one hand, the method that provides a kind of heterogeneous network to switch comprises:
New Mobile Access Gateway after the switching sends agent binding update messages to the local mobile anchor point, described agent binding update messages comprises the IP address that the new interface sign after terminal iidentification, the switching, described new Mobile Access Gateway are the new home network prefix of described terminal distribution, described new Mobile Access Gateway and switches indication parameter that described switching indication parameter is set to switch;
After data forwarding passage after described local mobile anchor point switches was set to point to described new Mobile Access Gateway, described new Mobile Access Gateway was transmitted to described local mobile anchor point with the follow-up described terminal that receives by the IP message that new interface sends; Or the IP message that the described local mobile anchor point that receives sends to described terminal is transmitted to described terminal by new interface.
On the other hand, the method that provides a kind of heterogeneous network to switch comprises:
Receive the agent binding update messages that new Mobile Access Gateway sends, described agent binding update messages comprises the IP address that the new interface sign after terminal iidentification, the switching, described new Mobile Access Gateway are the new home network prefix of described terminal distribution, described new Mobile Access Gateway and switches indication parameter;
If described switching indication parameter is set to switch, then old Mobile Access Gateway is that the data forwarding passage of the old home network prefix correspondence of described terminal distribution is set to point to described new Mobile Access Gateway.
On the other hand, the method that provides a kind of heterogeneous network to switch comprises:
Detect terminal and send the IP message to network by new Mobile Access Gateway;
The data forwarding passage of described terminal is set to point to described new mobile mobile gateway from pointing to old Mobile Access Gateway.
On the other hand, provide a kind of Mobile Access Gateway, comprising:
Sending module, be used for sending agent binding update messages to the local mobile anchor point, described agent binding update messages comprises that new interface sign, the new Mobile Access Gateway after the switching after terminal iidentification, the switching is the IP address of the new home network prefix of described terminal distribution, described new Mobile Access Gateway and switches indication parameter that described switching indication parameter is set to switch; After perhaps being used for data forwarding passage after described local mobile anchor point switches and being set to point to described new Mobile Access Gateway, the follow-up described terminal that receives is transmitted to described local mobile anchor point by the IP message that new interface sends; The IP message that the described local mobile anchor point that maybe will receive sends to described terminal is transmitted to described terminal by new interface.
On the other hand, provide a kind of local mobile anchor point, comprising:
Receiver module, be used to receive the agent binding update messages that new Mobile Access Gateway sends, described agent binding update messages comprises the IP address that the new interface sign after terminal iidentification, the switching, described new Mobile Access Gateway are the new home network prefix of described terminal distribution, described new Mobile Access Gateway and switches indication parameter;
Module is set, is used for if described switching indication parameter is set to switch, then old Mobile Access Gateway is that the data forwarding passage of the old home network prefix correspondence of described terminal distribution is set to point to described new Mobile Access Gateway.
On the other hand, provide a kind of local mobile anchor point, comprising:
Detection module is used to detect terminal and sends the IP message by new Mobile Access Gateway to network;
Module is set, is used for the detection according to described detection module, the data forwarding passage of described terminal is set to point to described new mobile mobile gateway from pointing to old Mobile Access Gateway.
The method and apparatus that the heterogeneous network that the embodiment of the invention provides switches, new Mobile Access Gateway is after the local mobile anchor point sends agent binding update messages, if switching indication parameter wherein is set to switch, the local mobile anchor point can comprise that the data forwarding passage after the switching is set to point to new Mobile Access Gateway, thereby realize that new Mobile Access Gateway and new interface after switch carry out the transmitting-receiving of IP message, when terminal uses the interface of a plurality of different radio technology to be connected to network, can realize the switching between many interfaces, and this method is simple, does not need to revise the IP stack and the IP layer service flow process of terminal.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 a is the flow chart of a kind of embodiment of method of terminal access in the heterogeneous network of the present invention;
A kind of embodiment of method that Fig. 1 b inserts for terminal in the heterogeneous network of the present invention is applied to use the schematic diagram of the heterogeneous network of PMIP;
Fig. 1 c is the schematic diagram of a kind of embodiment medium priority of method of terminal access in the heterogeneous network of the present invention;
Fig. 2 is the flow chart of another embodiment of method of terminal access in the heterogeneous network of the present invention;
Fig. 3 is the flow chart of another embodiment of method of terminal access in the heterogeneous network of the present invention;
Fig. 4 is the flow chart of a kind of embodiment of method of heterogeneous network switching of the present invention;
Fig. 5 is the flow chart of another embodiment of method of heterogeneous network switching of the present invention;
Fig. 6 is the flow chart of another embodiment of method of heterogeneous network switching of the present invention;
Fig. 7 is the flow chart of another embodiment of method of heterogeneous network switching of the present invention;
Fig. 8 is the flow chart of the another kind of embodiment of method of heterogeneous network switching of the present invention;
Fig. 9 is the structural representation of a kind of embodiment of Mobile Access Gateway of the present invention;
Figure 10 is the structural representation of another embodiment of Mobile Access Gateway of the present invention;
Figure 11 is the structural representation of a kind of embodiment of local mobile anchor point of the present invention;
Figure 12 is the structural representation of another embodiment of local mobile anchor point of the present invention;
Figure 13 is the structural representation of another embodiment of Mobile Access Gateway of the present invention;
Figure 14 is the structural representation of another embodiment of Mobile Access Gateway of the present invention;
Figure 15 is the structural representation of another embodiment of local mobile anchor point of the present invention;
Figure 16 is the structural representation of another embodiment of local mobile anchor point of the present invention;
Figure 17 is the structural representation of another embodiment of local mobile anchor point of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 a is the flow chart of a kind of embodiment of method of terminal access in the heterogeneous network of the present invention, and as shown in Figure 1a, this method may further comprise the steps:
A kind of embodiment of method that Fig. 1 b inserts for terminal in the heterogeneous network of the present invention is applied to use the schematic diagram of the heterogeneous network of PMIP, shown in Fig. 1 b, terminal MN possesses many interface capabilities, two the interface IF_1 and the IF_2 that suppose MN can receive the heterogeneous network that uses PMIP by WLAN and WIMAX technical battery respectively, corresponding, Mobile Access Gateway MAG_1 and MAG_2 can be respectively two interfaces by MN be connected with MN, MAG_1 is MN distribution network prefix HNP_1, and MAG_2 is MN distribution network prefix HNP_2.And, the IP address CoA_1 that MAG_1 uses oneself as the Care-of Address of MN to local mobile anchor point (Local Mobility Anchor; Be called for short: the proxy binding register of LMA) carrying out MN; MAG_2 also uses the IP address CoA_2 of oneself to carry out the proxy binding register of MN to LMA as the Care-of Address of MN.In addition, LMA notes the relevant agent binding record of MN after finishing proxy binding register, if MN passes through the MAG_1 that interface IF_1 has inserted the heterogeneous network that uses PMIP, will comprise in the agent binding record that HNP_1 binds relevant agent binding information with CoA_1.If follow-up MN inserts MAG_2 by interface IF_2 again, the agent binding of having preserved on LMA record will upgrade, as: increase HNP_2 and the relevant agent binding information of CoA_2 binding.Mobile Access Gateway MAG_1, MAG_2 will receive that LMA sends carries the agent binding notice message of the agent binding record after the renewal.
Wherein, agent binding on LMA record can have a plurality of, and each MN can corresponding agent binding record, comprises the agent binding information of this MN and a plurality of MAG in this agent binding record, and the agent binding of MN writes down the form as shown in table 1 below that is specifically as follows.
The agent binding record of table 1, MN
| Terminal iidentification | Mobile Access Gateway | Home network prefix | Care-of Address | Binding priority | Binding logo | |
| MN_ID | | HNP_1 | CoA_1 | 1 | BID_A | |
| MN_ID | | HNP_2 | CoA_2 | 2 | BID_B | |
| MN_ID | | HNP_3 | CoA_3 | 3 | BID_C |
MN_ID can be used as the index of the agent binding record of MN in the table 1, in embodiments of the present invention, the MAG (as MAG_1, MAG_2, MAG_3) of promising MN trade mark agency binding as shown in table 1 is called the MAG relevant with MN, and the agent binding of table 1 writes down also can be following form:
" MN-MAG_1-HNP_1-CoA_1, priority 1, BID_A ";
" MN-MAG_2-HNP_2-CoA_2, priority 2, BID_B ";
" MN-MAG_3-HNP_3-CoA_3, priority 3, BID_C ".
The agent binding record also can adopt the form that other can be available to realize, only for for example, does not limit the concrete form of realizing the agent binding record in the embodiment of the invention.
Wherein, step 102 specifically can comprise:
If the agent binding notice message only comprises the relevant agent binding information of Mobile Access Gateway oneself that receives, the Mobile Access Gateway that receives the agent binding notice message need not to carry out extra processing and operation.And if comprise the agent binding information of other Mobile Access Gateways that described terminal is relevant in the described agent binding notice message that receives, wherein, other Mobile Access Gateways be in the relevant Mobile Access Gateway of described terminal, the gateway except that the current Mobile Access Gateway that receives described agent binding notice message.And do not comprise the data forwarding association of described other Mobile Access Gateways in the forwarding associated record that the current Mobile Access Gateway self that receives described agent binding notice message is preserved, the home network prefix that then to preserve the terminal iidentification in the agent binding information of described other Mobile Access Gateways that receive, the interface identifier that described terminal provides for described other Mobile Access Gateways, described other Mobile Access Gateways be described terminal distribution and the IP address of described other Mobile Access Gateways;
The home address that the terminal of setting up described terminal iidentification correspondence respectively and described other Mobile Access Gateways are corresponding is related to the data forwarding between the IP address of described other Mobile Access Gateways, and the described terminal home address corresponding with described other Mobile Access Gateways is that described other Mobile Access Gateways are the home network prefix of described terminal distribution and the combination of described interface identifier;
If source IP address or purpose IP address in the IP message that receives are described terminal and the corresponding home address of described other Mobile Access Gateways, then described IP message is forwarded to the IP address of described other Mobile Access Gateways.
For example: shown in Fig. 1 b, if MAG_1 receives other relevant Mobile Access Gateways of MN such as the agent binding information of MAG_2, but do not comprise the data forwarding association of MAG_2 in the forwarding associated record that MAG_1 self preserves, then can to preserve MN sign in the agent binding information of the MAG_2 that receives, interface identifier, MAG_2 that MN provides for MAG_2 be the home network prefix HNP_2 that distributes of MN and the IP address CoA_1 of MAG_2 to MAG_1.It is related to the data forwarding between the CoA_2 that MAG_1 sets up the MN home address corresponding with MAG_2 (combination of the interface identifier that HNP_2 and MN provide for MAG_2) then.After this, if the combination of the interface identifier that source IP address in the IP message that MAG_1 receives or purpose IP address are HNP_2 and MN to be provided for MAG_2 can be forwarded to CoA_2 with this IP message.
Further, if comprising described local mobile anchor point in the described agent binding notice message is the binding priority of the proxy binding register distribution of the relevant Mobile Access Gateway of described terminal, then determine the priority of described data forwarding association according to described binding priority; And/or
If comprising described local mobile anchor point in the described agent binding notice message is the proxy binding register distribution binding logo of the relevant Mobile Access Gateway of described terminal, then determine the sign of described data forwarding association according to described binding logo.
Fig. 1 c is the schematic diagram of a kind of embodiment medium priority of method of terminal access in the heterogeneous network of the present invention, shown in Fig. 1 c, terminal MN is respectively by three Mobile Access Gateway MAG_1, MAG_2, MAG_3 access network, and the agent binding of having preserved on LMA record can be form or the form shown in the last table 1.Wherein " 1 ", " 2 ", " 3 " are binding priority, and BID_A, BID_B, BID_C are binding logo.If comprise above-mentioned all binding priority and binding logos in the agent binding notice message that MAG_1 receives, then MAG_1 can be set to " 2 " according to the priority " 1 " of the BID_B priority related with the data forwarding between the MAG_2, the sign related with the data forwarding between the MAG_2 is set to " BID_B ", the priority related with the data forwarding between the MAG_3 according to the priority " 3 " of BID_C is set to " 3 ", the sign related with the data forwarding between the MAG_3 is set to " BID_C ", and concrete MAG_1 goes up the forwarding associated record of preserving can be form as shown in table 2 below.
Table 2, forwarding associated record
| Terminal iidentification | Mobile Access Gateway | Home network prefix | Care-of Address | Priority | Sign | |
| MN_ID | | HNP_2 | CoA_2 | 2 | BID_B | |
| MN_ID | | HNP_3 | CoA_3 | 3 | BID_C |
Table 2 also can be recorded as following form:
" MN-MAG_2-HNP_2-CoA_2, priority 2, BID_B ";
" MN-MAG_3-HNP_3-CoA_3, priority 3, BID_C ".
In the motion management method of PMIP, if MN uses a plurality of interfaces of different access technologies to insert heterogeneous network, there are a plurality of MAG in the network, and terminal uses a plurality of interfaces to be connected respectively to different MAG, when these a plurality of MAG send agent binding update (Proxy BindingUpdate to LMA respectively; Be called for short: PBU) during message, LMA will for terminal create the agent binding of a plurality of separation or use after the agent binding that generates of the previous PBU message of PBU information updating received.And these MAG are because be in the different heterogeneous networks, and MN is connected to heterogeneous network by different access technologies, and the access device of these network sides is in the different network domains, and for example third generation partner program (3
RdGeneration Partnership Project; Be called for short: the various gateways in core net 3GPP), Wimax territory, the WLAN territory.The gateway device of prior art can not be connected and intercourse information simultaneously with terminal, because any one gateway does not know all whether terminal keeps being connected with other gateways of other networks, therefore, LMA is last can only (to make a plurality of interfaces be respectively applied for different sessions for the Care-of Address that terminal is preserved a plurality of separation, cannot use with, be that any one session can only be used an interface), perhaps keep last Care-of Address.Under these circumstances, isolate each other between a plurality of interfaces of different radio technology, an IP message that has the particular network prefix can't use whole wave points of terminal to receive and dispatch, and can only use the some specific interface transmitting-receiving of terminal.Terminal can't realize functions such as the switching, flow mobility between a plurality of interfaces of different radio technology, many forwarding address, many ownership, the distinct interface.For example the user has selected the VoIP business, specific interface and specific home network prefix have also been selected thereupon, but the home address of this home network prefix correspondence can only use initial that a kind of interface of determining, can't use the IP message of other interface transmitting-receiving home address.In addition, according to (the MultipleInterface of many interfaces working group among the IETF; Be called for short: research MIF) in the actual use of terminal, is with service application and interface conjunctionn at present mostly, and the mode according to IP address division interface route of the prior art can not have flexible Application on the terminal now.
And the agent binding of the terminal that present embodiment has been preserved on the local mobile anchor point writes down when taking place to upgrade, Mobile Access Gateway receives that the local mobile anchor point sends carries the agent binding notice message of the agent binding record after the renewal, can set up data forwarding association between the relevant Mobile Access Gateway of terminal according to agent binding information wherein, therefore, when being connected to a plurality of Mobile Access Gateway by a plurality of interfaces, communicate with each other between a plurality of interfaces, make terminal in the IP of service application message, use any one to distribute to the IP address of terminal, and can use any one interface to transmit these IP messages of transmitting-receiving, realize flexible and efficient many interfaces/many ownership management.
Fig. 2 is the flow chart of another embodiment of method of terminal access in the heterogeneous network of the present invention, and as shown in Figure 2, this method may further comprise the steps:
The agent binding notice message of step 204, the agent binding record after renewal is carried in the relevant Mobile Access Gateway transmission of described terminal, the agent binding record after the described renewal comprises that the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration.
When the agent binding record of having preserved on the local mobile anchor point LMA takes place to upgrade, LMA can send an agent binding notice message to the relevant Mobile Access Gateway MAG of terminal, renewal is taken place in the agent binding record after upgrading send to the relevant MAG of terminal, set up the data forwarding association thereby make the relevant MAG of terminal renewal take place according to the agent binding record.Specifically can be referring to Fig. 1 b among the last embodiment and relevant narration.
Further, before step 201, can also the local mobile anchor point be the process that terminal and Mobile Access Gateway are set up agent binding, specifically can comprise:
When the agent binding record of the terminal that present embodiment has been preserved on the local mobile anchor point takes place to upgrade, the agent binding notice message that carries the agent binding record after the renewal that the local mobile anchor point sends to Mobile Access Gateway, Mobile Access Gateway basis agent binding information wherein can be set up the data forwarding association between the relevant Mobile Access Gateway of terminal, therefore, when being connected to a plurality of Mobile Access Gateway by a plurality of interfaces, communicate with each other between a plurality of interfaces, make terminal in the IP of service application message, use any one to distribute to the IP address of terminal, and can use any one interface to transmit these IP messages of transmitting-receiving, realize flexible and efficient many interfaces/many ownership management.
Fig. 3 is the flow chart of another embodiment of method of terminal access in the heterogeneous network of the present invention, and as shown in Figure 3, this method specifically can may further comprise the steps:
After step 301, terminal MN were connected to Mobile Access Gateway MAG_1 by interface IF_1, MAG_1 can distribute home network prefix (Home Network Prefix for MN; Be called for short: HNP) as HNP_1.Wherein, the access way that IF_1 adopts can be used certain specific wireless technology, for example WCDMA or Wimax etc., and the embodiment of the invention does not limit concrete access way.
It is PBU message that step 302, MAG_1 send agent binding update (ProxyBinding Update) message to local mobile anchor point LMA, can comprise in the PBU message that the interface identifier that this MN sign, MN provide for MAG_1 (can be the physical interface sign of IF_1, also can be the virtual interface sign that MN provides), MAG_1 is the HNP_1 that distributes of MN, as the IP address CoA_1 of the MAG_1 of the Care-of Address of MN, and other relevant informations.
Step 303, LMA set up agent binding between the IP address CoA_1 of MN, HNP_1 and MAG_1, can distribute binding priority and binding logo for this agent binding according to attribute of user under the MN, LMA returns agent binding to MAG_1 and confirms that (Proxy BindingAcknowledgement) message is PBA message then, interface identifier, HNP_1, CoA_1 etc. that MN sign, MN provide for MAG_1 can be comprised in the PBA message, other information such as the binding priority of this agent binding and binding logo can also be comprised in the PBA message.
Step 304, LMA send agent binding announcement (Proxy Binding Notify) message to MAG_1, can comprise MN and the MAG_1 agent binding information on LMA in the agent binding notice message, specifically can comprise other information such as the binding priority of MN sign, HNP_1, CoA_1 and this agent binding and binding logo.If indication need be returned response message in the agent binding notice message, then MAG_1 can also return agent binding announcement affirmation (Proxy Binding NotifyAcknowledgement) message to LMA.
Step 305, MN are connected to Mobile Access Gateway MAG_2 by interface IF_2, and MAG_2 is that MN distributes home network prefix HNP_2.The access way of IF_2 can be used certain specific wireless technology identical or different with IF_1, and the embodiment of the invention does not limit concrete access way.
Step 306, MAG_2 send agent binding update messages to LMA, comprise in the agent binding update messages interface identifier (can be the physical interface sign of IF_2, also can be the virtual interface sign that MN provides), MAG_2 that MN sign, MN provide for MAG_2 be the HNP_2 that distributes of MN, as IP address CoA_2 and other information of the MAG_2 of the Care-of Address of MN.
Step 307, LMA set up agent binding between MN, HNP_2 and the CoA_2, and be that according to attribute of user under the MN this agent binding distributes binding priority and binding logo, LMA returns proxy binding acknowledgment messages to MAG_2 then, comprises in the proxy binding acknowledgment messages that interface IP address, MAG_2 that MN sign, MN provide for MAG_2 are other information such as the binding priority of the IP address CoA_2 of the MN HNP_2, the MAG_2 that distribute and this agent binding and binding logo.
Preserve the agent binding information that MN inserts by MAG_1 and MAG_2 on step 308, the LMA simultaneously, LMA sends the agent binding notice message to MAG_1, comprise MN and MAG_1, the MAG_2 agent binding information on LMA in this agent binding notice message, specifically comprise interface identifier, HNP_2, CoA_2 and other information such as binding priority and binding logo that interface identifier, HNP_1, CoA_1, MN that MN sign, MN provide for MAG_1 provide for MAG_2.If indication need be returned response message in the agent binding notice message, then MAG_1 can also return agent binding announcement acknowledge message to LMA.
Step 309, MAG_1 be according to all agent binding information in forwarding associated record of self preserving and the agent binding notice message that receives, and it is related to the data forwarding of MAG_2 to set up the corresponding home address of MN and MAG_2 in MAG_1.The wherein combination of the interface identifier that provides for MAG_2 for HNP_2 and MN of the home address that MN is corresponding with MAG_2.
MAG_2 is the Mobile Access Gateway that increases newly for MN in the agent binding notice message in step 309, the local forwarding associated record that does not have about MAG_2 of MAG_1, after MAG_1 can preserve MN sign in the agent binding notice message, information such as interface identifier, HNP_2, CoA_2, binding priority and binding logo that MN provides for MAG_2, it is related to the data forwarding of MAG_2 to set up the corresponding home address of MN and MAG_2 in MAG_1, and is saved in and transmits in the related record.After this, receive any source IP address or purpose IP address when being " interface identifier that HNP_2+MN provides for MAG_2 " combined I P message, the IP address CoA_2 that this IP message is forwarded at MAG_1.In addition, MAG_1 can also be defined as the priority of this data forwarding association MN in the agent binding notice message and the binding priority of MAG_2.
Wherein, when LMA changes at the agent binding record of MN each time, can send the agent binding notice message to all MAG that participate in the MN agent binding, to the agent binding information of all relevant MAG announcement MN, can make between a plurality of MAG intercommunication MN by the agent binding information of gateway access network separately.And receive the MAG of agent binding notice message for all, if the agent binding notice message that receives only comprises the agent binding information that this MAG oneself is relevant, this MAG need not extra processing and operation; If comprise the agent binding information of this MAG and other MAG in the agent binding notice message that receives, each MAG that receives this agent binding notice message can set up the data forwarding binding between IP address each other, realize home address/interface data route more flexibly.
Step 310, LMA send the agent binding notice message to MAG_2, this agent binding notice message comprises MN and MAG_1, the MAG_2 agent binding information on LMA, specifically comprises interface identifier, HNP_2, CoA_2 and other information such as binding priority and binding logo that interface identifier, HNP_1, CoA_1, MN that MN sign, MN provide for MAG_1 provide for MAG_2.If indication need be returned response message in this agent binding notice message, then MAG_2 can also return agent binding announcement acknowledge message to LMA.
Step 311, MAG_2 be according to all agent binding information in forwarding associated record of self preserving and the agent binding notice message that receives, and it is related to the data forwarding of MAG_1 to set up the corresponding home address of MN and MAG_1 in MAG_2.The wherein combination of the interface identifier that provides for MAG_1 for HNP_1 and MN of the home address that MN is corresponding with MAG_1.
In step 311, suppose that MAG_1 is the Mobile Access Gateway that increases newly for MN in the agent binding notice message, the local forwarding associated record that does not have about MAG_1 of MAG_2, MAG_2 can preserve the MN sign in the agent binding notice message, interface identifier, HNP_1, the CoA_1 that MN provides for MAG_1, it is related to the data forwarding of MAG_1 to set up the corresponding home address of MN and MAG_1 in MAG_2, and is saved in and transmits in the related record.After this, if MAG_2 receives any source IP address or purpose IP address is " interface identifier that HNP_1+MN provides for MAG_2 " combined I P message, this IP message is forwarded to the IP address CoA_1 of MAG_1.The priority of this data forwarding association can also be defined as the binding priority of MN and MAG_2.
Step 312, MN are connected to Mobile Access Gateway MAG_3 by interface IF_3, and MAG_3 is that MN distributes home network prefix HNP_3.The access way that IF_3 adopts can use certain specific wireless technology identical or different with IF_1, IF_2, and the embodiment of the invention does not limit concrete access way.
Step 313, MAG_3 send agent binding update messages to LMA, and interface identifier, the MAG_3 that provides for MAG_3 comprising MN sign, MN be the HNP_3 that distributes of MN, as IP address CoA_3 and other information of the MAG_3 of the Care-of Address of MN.
Step 314, LMA set up agent binding between MN, HNP_3 and the CoA_3, and be that according to attribute of user under the MN this agent binding distributes binding priority and binding logo, LMA returns proxy binding acknowledgment messages to MAG_3 then, comprises interface IP address that MN sign, MN provide for MAG_3, HNP_3, CoA_3, and other information such as binding priority and binding logo in the proxy binding acknowledgment messages.
Preserve the agent binding information that MN inserts by MAG_1, MAG_2 and MAG_3 on step 315, the LMA simultaneously, LMA sends the agent binding notice message to MAG_1, comprise in this agent binding notice message that MN passes through MAG_1, MAG_2 and the agent binding information of MAG_3 on LMA, specifically comprise interface identifier, HNP_1, CoA_1, HNP_2, CoA_2, HNP_3, CoA_3 and other information such as binding priority and binding logo that MN sign, MN provide for MAG_1, MAG_2, MAG_3.If response message is returned in indication in this agent binding notice message, then MAG_1 can also return agent binding announcement acknowledge message to LMA.
Step 316, MAG_1 be according to forwarding associated record of self preserving and the agent binding notice message that receives, and it is related to the data forwarding of MAG_3 to set up the corresponding home address of MN and MAG_3 in MAG_1.Wherein, owing in step 309, have the data forwarding association of MAG_2 in MAG_1 this locality, and MAG_3 is the Mobile Access Gateway that increases newly, the local forwarding associated record that does not have about MAG_3 of MAG_1, MAG_1 can preserve the MN sign in the agent binding notice message, interface identifier, HNP_3, the CoA_3 that MN provides for MAG_3, it is related to the data forwarding of MAG_3 to set up the corresponding home address of MN and MAG_3 in MAG_1, and is saved in and transmits in the related record.After this, receive any source IP address or purpose IP address when being " interface identifier that HNP_3+MN provides for MAG_3 " combined I P message, this IP message is forwarded to the IP address CoA_3 of MAG_3 at MAG_1.The priority of this data forwarding association can also be defined as the binding priority of MN and MAG_3.
Step 317, LMA send the agent binding notice message to MAG_2, comprise in this agent binding notice message that MN passes through MAG_1, MAG_2 and the agent binding information of MAG_3 on LMA, specifically can be with reference to the content in the step 315.If response message is returned in indication in this agent binding notice message, then MAG_2 can also return agent binding announcement acknowledge message to LMA.
Step 318, MAG_2 is according to forwarding associated record of self preserving and the agent binding notice message that receives, it is related to the data forwarding of MAG_3 to set up the corresponding home address of MN and MAG_3 in MAG_2, wherein, owing in step 311, have the forwarding associated record of MAG_1 in MAG_2 this locality, and MAG_3 is the Mobile Access Gateway that increases newly for MN in the agent binding notice message, MAG_2 this locality does not have the relevant binding record of MAG_3, MAG_2 identifies according to the MN in the agent binding notice message, the interface identifier that MN provides for MAG_3, MAG_3 is the HNP_3 that MN distributes, the IP address CoA_3 of MAG_3, it is related to the data forwarding of MAG_3 to set up the corresponding home address of MN and MAG_3 in MAG_2, and is saved in and transmits in the related record.After this, if MAG_2 receives any source IP address or purpose IP address is the message of " interface identifier that HNP_3+MN provides for MAG_3 " combination, this message can be forwarded to the IP address CoA_3 of MAG_3.The priority of this data forwarding association can also be defined as the binding priority of MN and MAG_3.
Step 319, LMA send the agent binding notice message to MAG_3, comprise in this agent binding notice message that MN passes through MAG_1, MAG_2 and the agent binding information of MAG_3 on LMA, specifically can be with reference to the content in the step 315.If indication need be returned response message in this agent binding notice message, then MAG_3 can also return agent binding announcement acknowledge message to LMA.
Step 320, MAG_3 is according to forwarding associated record of self preserving and the agent binding notice message that receives, it is related to the data forwarding of MAG_1 to set up the corresponding home address of MN and MAG_1 in MAG_3, wherein, MAG_1 is the Mobile Access Gateway that increases newly for MN in the agent binding notice message, the forwarding associated record that does not have MAG_1 in MAG_3 this locality, MAG_3 identifies according to the MN in the agent binding notice message, the interface identifier that MN provides for MAG_1, HNP_1, CoA_1, it is related to the data forwarding of MAG_1 to set up the corresponding home address of MN and MAG_1 in MAG_3, and is saved in and transmits in the related record.After this, if receive any source IP address or purpose IP address is " interface identifier that HNP_1+MN provides for MAG_1 " combined I P message, this IP message can be forwarded to the IP address CoA_1 of MAG_1 at MAG_3.
Step 321, MAG_3 is according to forwarding associated record of self preserving and the agent binding notice message that receives, it is related to the data forwarding of MAG_2 to set up the corresponding home address of MN and MAG_2 in MAG_3, wherein, MAG_2 is the Mobile Access Gateway that increases newly for MN in the agent binding notice message, the forwarding associated record that does not have MAG_2 in MAG_3 this locality, MAG_3 can preserve the MN sign in the agent binding notice message, the interface identifier that MN provides for MAG_2, HNP_2, CoA_2, it is related to the data forwarding of MAG_2 to set up the corresponding home address of MN and MAG_2, and is saved in and transmits in the related record.After this, if MAG_3 receives any source IP address or purpose IP address is " interface identifier that HNP_2+MN provides for MAG_2 " combined I P message, all this IP message is forwarded to the IP address CoA_2 of MAG_2.
When the agent binding record of the terminal that present embodiment has been preserved on LMA takes place to upgrade, the agent binding notice message that carries the agent binding record after the renewal that LMA sends to relevant with MN all MAG, the MAG that receives the agent binding notice message can set up data forwarding association between the relevant MAG of MN according to agent binding information wherein, therefore, when MN is connected to a plurality of MAG by a plurality of interfaces, communicate with each other between a plurality of interfaces, make MN in the IP of service application message, use any one to distribute to the IP address of terminal, and can use any one interface to transmit these IP messages of transmitting-receiving, realize flexible and efficient many interfaces/many ownership management.
Fig. 4 is the flow chart of a kind of embodiment of method of heterogeneous network switching of the present invention, and as shown in Figure 4, this method can may further comprise the steps:
New Mobile Access Gateway after step 401, the switching sends agent binding update messages to the local mobile anchor point, described agent binding update messages comprises the IP address that the new interface sign after terminal iidentification, the switching, described new Mobile Access Gateway are the new home network prefix of described terminal distribution, described new Mobile Access Gateway and switches indication parameter that described switching indication parameter is set to switch;
Using PMIP to carry out in the heterogeneous network of mobile management, terminal can insert different networks respectively by different interfaces, terminal can adopt corresponding interface and Mobile Access Gateway transmitting-receiving IP message, because end moves or link-quality problem such as eventually, the interface and the Mobile Access Gateway of terminal transmitting-receiving IP message may change, need switch to another interface and Mobile Access Gateway, at this moment, Mobile Access Gateway before switching is old Mobile Access Gateway, and the Mobile Access Gateway after the switching is new Mobile Access Gateway.Wherein, the condition that switches comprises following example:
Example one, described new Mobile Access Gateway detect described terminal and send the IP message by new interface to described new Mobile Access Gateway;
Terminal can initiatively be initiated for terminal to the switching of new interface from old interface, when detecting radio link quality, terminal changes, when satisfying switching condition, terminal can select to switch to new interface automatically, and the user also can directly manually select to switch to new interface on terminal.After selection switched to new interface, terminal sent the IP message by the new Mobile Access Gateway that new interface inserts to network.If when network sent data, new Mobile Access Gateway sent to have to the local mobile anchor point and switches the agent binding update messages that indication parameter is set to switch new Mobile Access Gateway sense terminals by own.
Example two, described new Mobile Access Gateway or old Mobile Access Gateway detect radio link quality satisfy switching condition after.
Terminal can initiatively be initiated for network side to the switching of new interface from old interface, when detecting radio link quality, the new Mobile Access Gateway of network side or old Mobile Access Gateway satisfy switching condition such as terminal to good than to old Mobile Access Gateway of the radio link quality of new Mobile Access Gateway, then initiate to switch from new Mobile Access Gateway or old Mobile Access Gateway, new then Mobile Access Gateway sends to have to the local mobile anchor point and switches the agent binding update messages that indication parameter is set to switch.
In addition, for reduce switched in the packet loss of transfer of data, after step 401, can also may further comprise the steps:
Described new Mobile Access Gateway sends switch indicating information to described old Mobile Access Gateway;
Described new Mobile Access Gateway receives the switching response message that described old Mobile Access Gateway returns;
Described new Mobile Access Gateway receives the IP message of the described terminal of described old Mobile Access Gateway forwarding from the data forwarding passage between described old Mobile Access Gateway and the described new Mobile Access Gateway.
Wherein, can send switch indicating information mutually between new Mobile Access Gateway and the old Mobile Access Gateway, because it is related to set up data forwarding between old Mobile Access Gateway and the described new Mobile Access Gateway, have the data forwarding passage, therefore new Mobile Access Gateway can lead to the IP message of the terminal that receives old Mobile Access Gateway forwarding by this data forwarding.Wherein, can set up relevant narration among the method embodiment that the related concrete grammar of data forwarding can insert with reference to terminal in the above-mentioned heterogeneous network between old Mobile Access Gateway and the described new Mobile Access Gateway.
After step 402, the data forwarding passage of described new Mobile Access Gateway after described local mobile anchor point switches are set to point to described new Mobile Access Gateway, the follow-up described terminal that receives is transmitted to described local mobile anchor point by the IP message that new interface sends; The IP message that the described local mobile anchor point that maybe will receive sends to described terminal is transmitted to described terminal by new interface.
The new Mobile Access Gateway of present embodiment is after the local mobile anchor point sends agent binding update messages, if switching indication parameter wherein is set to switch, the local mobile anchor point can comprise that the data forwarding passage after the switching is set to point to new Mobile Access Gateway, new Mobile Access Gateway and the new interface of realization after switch carried out the transmitting-receiving of IP message, when terminal uses the interface of a plurality of different radio technology to be connected to network, can realize the switching between many interfaces, and this method is simple, does not need to revise the IP stack and the IP layer service flow process of terminal.
Fig. 5 is the flow chart of another embodiment of method of heterogeneous network switching of the present invention, and as shown in Figure 5, this method can may further comprise the steps:
The agent binding update messages that step 501, the new Mobile Access Gateway of reception send, described agent binding update messages comprise the IP address that the new interface sign after terminal iidentification, the switching, described new Mobile Access Gateway are the new home network prefix of described terminal distribution, described new Mobile Access Gateway and switch indication parameter;
Further, if agent binding update messages also comprises flow descriptors, then this method can also comprise: according to described flow descriptors, the data forwarding passage of the business data flow that switches is set to point to described new Mobile Access Gateway.
In addition, the local mobile anchor point can also be made amendment to the binding priority of terminal and each Mobile Access Gateway, specifically comprises:
Is high priority with described terminal by the binding priority update in the agent binding information of described new Mobile Access Gateway registration; And/or
Is low priority with described terminal by the binding priority update in the agent binding information of described old Mobile Access Gateway registration.
Wherein, the local mobile anchor point can be according to the agent binding update messages that receives, the data forwarding passage of terminal is set to point to new Mobile Access Gateway, the binding priority of this new Mobile Access Gateway correspondence is set to high priority then, if the binding priority of old before new Mobile Access Gateway correspondence is high priority then the binding priority of these old new Mobile Access Gateways is reduced.The follow-up IP message of terminal can use the route and the new interface of new Mobile Access Gateway correspondence to receive and dispatch then.Revise after the priority, terminal sends the IP message with preferential new interface and new Mobile Access Gateway from the high priority correspondence to network side.
After present embodiment local mobile anchor point receives agent binding update messages, if switching indication parameter wherein is set to switch, can comprise that the data forwarding passage after the switching is set to point to new Mobile Access Gateway, new Mobile Access Gateway and the new interface of realization after switch carried out the transmitting-receiving of IP message, when terminal uses the interface of a plurality of different radio technology to be connected to network, can realize the switching between many interfaces, and this method is simple, does not need to revise the IP stack and the IP layer service flow process of terminal.
Fig. 6 is the flow chart of another embodiment of method of heterogeneous network switching of the present invention, as shown in Figure 6, supposes to initiate to switch in terminal MN side, and this method can may further comprise the steps:
Step 601, terminal MN are connected to Mobile Access Gateway MAG_1 by interface IF_1 access network, and MAG_1 is that MN distributes home network prefix HNP_1.
Step 602, MAG_1 send agent binding update (Proxy Binding Update) message to LMA, be PBU message, the interface identifier that provides for MAG_1 comprising MN sign, MN, HNP_1, as the IP address CoA_1 of the MAG_1 of the forwarding address of MN, switch indication parameter (Handoff Indicator Option), wherein switch indication parameter and be set to new access, as Attachmentover a new interface, can indicate this proxy binding register is that MN passes through the new access network of this interface IF_1.
LMA receives and creates the agent binding of MAG_1 for MN after the PBU message and record in the agent binding record, for example: with " interface identifier that HNP_1+MN provides for MAG_1 " as the MN home address corresponding with MAG_1, with the Care-of Address of CoA_1 as MN, and the Care-of Address CoA of home address that MN and MAG_1 is corresponding and MN related after, be saved in the agent binding record, can return proxy binding acknowledgment messages to MAG_1 then.
In addition, LMA can also send the agent binding notice message to announce the relevant agent binding record of having preserved on the LMA of MN to MAG_1, at this moment, only comprises that MN is connected to the agent binding information of MAG_1 by interface IF_1 in the agent binding of the last preservation of the LMA record.MAG_1 can return agent binding announcement acknowledge message to LMA after receiving the agent binding notice message.
Step 603, MN are connected to MAG_2 by interface IF_2 access network, and MAG_2 is that MN distributes home network prefix HNP_2.
Step 604, MAG_2 send PBU message to LMA, comprising interface identifier, HNP_2, CoA_2, the switching indication parameter that MN identifies, MN provides for MAG_2, wherein switch indication parameter and be set to new access, indicating this proxy binding register is that MN passes through the new access network of this interface IF_2.
LMA receives the agent binding record of creating MAG_2 after the PBU message for MN, for example: with " interface identifier that HNP_2+MN provides for MAG_2 " as the corresponding home address of MN with MAG_2, will be as the Care-of Address of MN, and with the Care-of Address CoA_2 of corresponding home address of MN and MN with MAG_2, be saved in the agent binding record, can return acknowledge message to MAG_2 then.
In addition, LMA can also be respectively sends the relevant agent binding record of MN that the agent binding notice message has been preserved on announcement LMA to MAG_1 and MAG_2, comprises during the agent binding of having preserved on the LMA this moment writes down that MN is connected to MAG_1 by IF_1 and is connected to the agent binding information of MAG_2 by IF_2.MAG_1 and MAG_2 can return agent binding announcement acknowledge message to LMA respectively after receiving the agent binding notice message.
Step 605, MN are connected to MAG_3 by interface IF_3 access network, and MAG_3 is that MN distributes home network prefix HNP_3.
Step 606, MAG_3 send PBU message to LMA, comprising interface identifier, HNP_3, CoA_3, the switching indication parameter value that MN identifies, MN provides for MAG_3, wherein, switch the indication parameter value and be set to new access, indicating this proxy binding register is that MN passes through the new access network of this interface IF_3.LMA receives the agent binding record of creating MAG_3 after the PBU message for MN, for example: " interface identifier that HNP_3+MN provides for MAG_3 " sent to CoA_1 as the MN home address corresponding with MAG_2 and record in the agent binding record, can return acknowledge message to MAG_3 then.
In addition, LMA also announces the relevant agent binding record of having preserved on the LMA of MN to MAG_1, MAG_2 with MAG_3, at this moment, comprise in the agent binding preserved on the LMA record that MN is connected to MAG_1, is connected to MAG_2 and is connected to the agent binding information of MAG_3 by IF_3 by IF_2 by IF_1.MAG_1, MAG_2 and MAG_3 can return agent binding announcement acknowledge message to LMA after receiving the agent binding notice message.
If having set interface IF_1 in user's the user property under step 607 MN is priority interface, terminal (MN) and network side (LMA and MAG) all will preferentially use MAG_1 and IF_1 as MN data forwarding passage, by the IF_1 transceive data so.Wherein, step 607 is optional steps, and for example MN may be in the stage of just having finished initial access registration, does not have data transmit-receive, does not therefore need specified data to transmit passage.
Step 608, MN are moved or reconfigure reasons such as interface, the radio link quality that may cause MN to detect MAG_1 drops to that threshold value is following, MN brings up to more than the threshold value and is higher than MAG_3 to the radio link quality of MAG_2, can change to use MAG_2 and the IF_2 data forwarding passage as MN.Wherein, MAG_2 and IF_2 can be selected and initiate to switch as the initiating method of the data forwarding passage of MN for change interface automatically by MN when radio link quality changes, also can initiate to switch when interface is selected for manually changing the user.At this moment, MAG_1 is new MAG, and MAG2 is old MAG, and IF_1 is a new interface, and IF_2 is old interface.
The interface of step 609, MN is selected to change, and MN initiates interface and switches, switch to IF_2 from interface IF_1 after, MN will send data to MAG_2 by new interface IF_2, or receive the data of MAG.
Step 610, MAG_2 can monitor the IP message that MN sends to network side in real time, when MAG_2 detects MN when MAG_2 sends the IP message, can trigger the switching of MN to new interface IF_2.
Further, MAG_2 can be by detecting the feature of IP message, the for example source IP address of IP message, purpose IP address, source port number, destination slogan, type of service etc., parse MN and switched which business data flow to new interface IF_2, and, trigger stream mobility (flow mobility) characteristic according to the feature of these business data flows.
Step 611, MAG_2 send switch indicating information to MAG_1, and indication MAG_1 terminal MN has switched to business interface IF_2.Wherein, step 611 is optional steps, only send data by MAG_2 to network side when MAG_2 detects MN as new MAG, and MN has when using higher priority to carry out agent binding by MAG_1 on LMA as old MAG, MAG_2 just sends switch indicating information to these old MAG.New MAG can seek out corresponding old MAG according to the agent binding notice message of LMA transmission, and finishes the data forwarding indication between new MAG and the old MAG.
Step 612, MAG_1 return switching response message to MAG_2, accept the switching indication of MAG_2.
Step 613, MAG_1 set up the data forwarding passage between MAG_1 and MAG_2, MAG_1 all is transmitted to MAG_2 with the IP message of follow-up MN and handles.It has been IP messages of MN in those destinations that network transmits that this process can be used for transmitting, and can reduce the loss of data in the handoff procedure, promotes performance of handoffs.
After step 614, MAG_2 detect the interface switching of MN, again send PBU message to LMA, comprising interface identifier, HNP_2, CoA_2, the switching indication parameter that MN identifies, MN provides for MAG_2, switch indication parameter and be set to switch this moment, and indicating this proxy binding register is that MN switches to the access network by MAG_2.
Further, MAG_2 can increase the flow descriptors of service switchover data flow in PBU message, with which business data flow of indication LMA switching has taken place, thereby realizes flow mobility function.After LMA receives this PBU message, can be set to high priority by the priority that IF_2 is connected to the agent binding record of MAG_2 by MN, and return acknowledge message to MAG_2.In addition, if preserved MN is connected to other MAG such as MAG_1 by other interfaces high priority agent binding on the LMA, then LMA can reduce the priority of the agent binding of these MAG, to guarantee that MN is connected to the agent binding of MAG_2 as limit priority by IF_2.
Further, LMA can send the agent binding notice message to announce the relevant agent binding record of MN after LMA goes up renewal to MAG_1, MAG_2 and MAG_3.The agent binding record of having preserved on the LMA this moment comprises that MN passes through the agent binding information of MAG_1, MAG_2 and MAG_3.MAG_1, MAG_2 and MAG_3 can return agent binding announcement acknowledge message to LMA after receiving the agent binding notice message.
The interface of step 615, MN switches to be finished, and MN is by new interface IF_2 transceive data, as sending the IP message by IF_2 to MAG_2, thereby the data forwarding passage of upstream data is switched to new interface IF_2; After the new switching indication parameter that LMA receives MAG_2 is the agent binding update messages that switches, the data forwarding passage after switching is pointed to MAG_2, send to terminal by IF_2 thereby downlink data switched to from MAG_2.
After the present embodiment terminal is initiated the interface switching, new MAG sends PBU message to LMA, if switching indication parameter wherein is set to switch, LMA can comprise that the data forwarding passage after the switching is set to point to new LMA, new LMA and the new interface of realization after switch carried out the transmitting-receiving of IP message, when terminal uses the interface of a plurality of different radio technology to be connected to network, can realize the switching between many interfaces, and this method is simple, does not need to revise the IP stack and the IP layer service flow process of terminal.
Fig. 7 is the flow chart of another embodiment of method of heterogeneous network switching of the present invention, and as shown in Figure 7, the main distinction of a present embodiment and a last embodiment is that by network side initiation switching, this method can may further comprise the steps:
Wherein, step 701 be the process of MAG_1, MAG_2, the new access network of MAG_3 to step 707, and to arrive step 607 identical with step 601 among the last embodiment, can be with reference to the associated description among the last embodiment.
Step 708, MAG_1 monitor the radio link quality of MN to MAG_1, MAG_2 monitoring MN is to the radio link quality of MAG_2, when dropping to radio link quality between the MAG_1, MN is lower than threshold value, MN when the quality of radio connection of MAG_2 is higher than threshold value and can loads threshold requirement, MAG_1 and MAG_2 can trigger based on network interface and switch, and change to selection use MAG_2 and the IF_2 data forwarding passage as MN automatically.At this moment, MAG_1 is old MAG, and IF_1 is old interface; MAG_2 is new MAG, and IF_2 is a new interface.
Among step 709, the MAG_1 and process as the MAG_2 triggering MN interface switching of MAG newly as old MAG, can be that old MAG sends switch indicating information to new MAG, also can be that new MAG sends switch indicating information to old MAG, receiving one of switch indicating information can be to return switching response message.
In addition, LMA can send the agent binding notice message to new MAG, old MAG respectively in the embodiment of the invention, note the IP address of all the other MAG and the binding information of all the other MAG correspondences (comprising home network prefix and binding priority etc.), new MAG and old MAG can know that the other side sets up the information of agent binding for MN, and can finish the indication of switching.
Step 710, MAG_1 are after setting up the data forwarding passage between MAG_1 and the MAG_2, and MAG_1 can all be transmitted to the IP message of the follow-up MN that receives MAG_2 and handle.It has been the IP message of MN in those destinations that network transmits that this process can be used for transmitting, and can reduce the loss of data in the handoff procedure, promotes performance of handoffs.
After step 711, MAG_2 detect the interface switching of MN, again send PBU message to LMA, comprising interface identifier, the IP address CoA_2 of HNP_2, MAG_2, the switching indication parameter that MN identifies, MN provides for MAG_2, wherein switch indication parameter and be set to switch, indicating this proxy binding register is that MN switches to the access network from MAG_2.
Further, MAG_2 can increase the flow descriptors of service switchover data flow in PBU message, with indication LMA which business data flow switching having taken place, thereby the data forwarding passage of the business data flow that switches has been pointed to MAG_2, has realized flow mobility function.After LMA receives this PBU message, can be set to high priority by the priority that new interface IF_2 is connected to the agent binding of MAG_2 by MN, and return acknowledge message to MAG_2.In addition, if preserved MN is connected to other MAG such as MAG_1 by other interfaces high priority agent binding on the LMA, then LMA can reduce the priority of the agent binding of MAG_1, to guarantee that MN is connected to the agent binding of MAG_2 as limit priority by new interface IF_2.
Further, LMA can send the agent binding notice message to announce the relevant agent binding record of MN after LMA goes up renewal to MAG_1, MAG_2 and MAG_3.The agent binding record of having preserved on the LMA this moment comprises that MN passes through the agent binding information of MAG_1, MAG_2 and MAG_3.MAG_1, MAG_2 and MAG_3 can return agent binding announcement acknowledge message to LMA after receiving the agent binding notice message.
The interface of step 712, MN switches to be finished, and MN passes through new interface IF_2 transceive data, as: through port IF_2 sends the IP message to MAG_2, thereby the data forwarding passage of upstream data is switched to new interface IF_2; After the new switching indication parameter that LMA receives MAG_2 is the agent binding update messages that switches, the data forwarding passage after switching is pointed to MAG_2, send to terminal by IF_2 thereby downlink data switched to from MAG_2.
After the present embodiment network side is initiated the interface switching, new MAG sends PBU message to LMA, if switching indication parameter wherein is set to switch, LMA can comprise that the data forwarding passage after the switching is set to point to new LMA, new LMA and the new interface of realization after switch carried out the transmitting-receiving of IP message, when terminal uses the interface of a plurality of different radio technology to be connected to network, can realize the switching between many interfaces, and this method is simple, does not need to revise the IP stack and the IP layer service flow process of terminal.
Of particular note, the terminal in the embodiment of the invention can have a plurality of interfaces, and IF_1, IF_2, IF_3 are not the qualification to terminal interface; Can have a plurality of MAG Mobile Access Gateways in the network, MAG_1, MAG_2 and MAG_3 neither be to the qualifications of network configuration.It is the example explanation that mobile device is connected to three different Mobile Access Gateways with three interfaces, and the method can be used for a plurality of interfaces and be connected to a plurality of different Mobile Access Gateways.
Fig. 8 is the flow chart of the another kind of embodiment of method of heterogeneous network switching of the present invention, and as shown in Figure 8, the method that this heterogeneous network switches comprises:
The data forwarding passage of step 802, described terminal is set to point to described new mobile mobile gateway from pointing to old Mobile Access Gateway.
Using PMIP to carry out in the heterogeneous network of mobile management, terminal can insert different networks respectively by different interfaces, and terminal can adopt corresponding interface and Mobile Access Gateway transmitting-receiving IP message.Terminal can initiatively be initiated for terminal to the switching of new interface from old interface, when detecting radio link quality, terminal changes, when satisfying switching condition, terminal can select to switch to new interface automatically, and the user also can directly manually select to switch to new interface on terminal.After selection switched to new interface, terminal sent the IP message by the new Mobile Access Gateway that new interface inserts to network, and new Mobile Access Gateway is transmitted the IP message that receives from terminal to the local mobile anchor point.
If the local mobile anchor point detects terminal and sends the IP message by new Mobile Access Gateway to network, the local mobile anchor point can described terminal the data forwarding passage be set to point to new Mobile Access Gateway, specifically can comprise following at least one example:
Example one, be high priority with the binding priority update in the agent binding information of described new Mobile Access Gateway registration; For example: suppose that MAG_1 is old Mobile Access Gateway, MAG_2 is new Mobile Access Gateway, is " 1 " with the binding priority update of MAG_2 in the table 1 of the foregoing description.
Example two, be low priority with the binding priority update in the agent binding information of described old Mobile Access Gateway registration; For example: suppose that MAG_1 is old Mobile Access Gateway, MAG_2 is new Mobile Access Gateway, is " 2 " with the binding priority update of MAG_1 in the table 1 of the foregoing description.
Example three, old Mobile Access Gateway are that the data forwarding passage of the old home network prefix correspondence of described terminal distribution is set to point to described new Mobile Access Gateway;
For example: what comprise in the agent binding record before switching of MN thes contents are as follows shown in the table 3, suppose that MAG_1 is old Mobile Access Gateway, MAG_2 is new Mobile Access Gateway, if the data forwarding passage of the old home network prefix HNP_1 correspondence of the MAG_2 in the table 3 is set to point to MAG_2, the Care-of Address of the HNP_1 correspondence in the agent binding information of MAG_1 registration will be updated to CoA_2 from CoA_1, and will be as shown in table 4.
Agent binding record before table 3, the switching
| Terminal iidentification | Mobile Access Gateway | Home network prefix | Care-of Address | Binding priority | Binding logo | |
| MN_ID | | HNP_1 | CoA_1 | 1 | BID_A | |
| MN_ID | | HNP_2 | CoA_2 | 2 | BID_B |
Agent binding record after table 4, the switching
| Terminal iidentification | Mobile Access Gateway | Home network prefix | Care-of Address | Binding priority | Binding logo | |
| MN_ID | | HNP_1 | CoA_2 | 1 | BID_A | |
| MN_ID | | HNP_2 | CoA_2 | 2 | BID_B |
The agent binding Indication message of example four, agent binding information after described new Mobile Access Gateway transmission comprises renewal, described new Mobile Access Gateway registration, agent binding Indication message after described old Mobile Access Gateway sends renewal, that comprise the agent binding information of described old Mobile Access Gateway registration.Wherein, the agent binding information in the agent binding Indication message can for as in the example one, two according to the agent binding information of amended each MAG correspondence of table 1, also can be agent binding information as each MAG correspondence in table 3, the table 4.
In the present embodiment, the local mobile anchor point detects terminal when new Mobile Access Gateway sends the IP message, the new Mobile Access Gateway that can switch to from old Mobile Access Gateway, when terminal uses the interface of a plurality of different radio technology to be connected to network, can realize the switching between many interfaces, and this method is simple, does not need to revise the IP stack and the IP layer service flow process of terminal.
Fig. 9 is the structural representation of a kind of embodiment of Mobile Access Gateway of the present invention, and as shown in Figure 9, this Mobile Access Gateway can comprise: announcement receiver module 11 and relating module 13.
Wherein, announcement receiver module 11, be used to receive that the local mobile anchor point sends carries the agent binding notice message of the agent binding record after the renewal, the agent binding record after the described renewal comprises that the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration;
Relating module 13 is used for the forwarding associated record according to described agent binding information and self preservation, sets up the data forwarding association between the relevant Mobile Access Gateway of described terminal.
Particularly, when terminal uses the interface of a plurality of different radio technology to be connected to network, if the agent binding of the terminal of having preserved on local mobile anchor point record upgrades, the announcement receiver module 11 of Mobile Access Gateway can receive that the local mobile anchor point sends carries the agent binding notice message of the agent binding record after the renewal, relating module 13 is the agent binding information of described endpoint registration according to the relevant Mobile Access Gateway of terminal that the agent binding record after upgrading comprises then, and the forwarding associated record of this Mobile Access Gateway self preservation, judge the forwarding associated record of whether having preserved on this Mobile Access Gateway with other Mobile Access Gateways, if do not have, it is related with the data forwarding of other Mobile Access Gateways then can to set up this Mobile Access Gateway, and is saved in the forwarding associated record.Follow-up, if this Mobile Access Gateway receives the IP message that terminal need send to other Mobile Access Gateways, then this IP message can be transmitted to corresponding Mobile Access Gateway.
When the agent binding record of the terminal that present embodiment has been preserved on the local mobile anchor point takes place to upgrade, the announcement receiver module receives that described local mobile anchor point sends carries the agent binding notice message of the agent binding record after the renewal, relating module basis agent binding information wherein can be set up the data forwarding association between the relevant Mobile Access Gateway of terminal, therefore, when being connected to a plurality of Mobile Access Gateway by a plurality of interfaces, communicate with each other between a plurality of interfaces, make terminal in the IP of service application message, use any one to distribute to the IP address of terminal, and can use any one interface to transmit these IP messages of transmitting-receiving, realize flexible and efficient many interfaces/many ownership management.
Figure 10 is the structural representation of another embodiment of Mobile Access Gateway of the present invention, as shown in figure 10, on the basis of an embodiment on the Mobile Access Gateway of the present invention, the relating module 13 of this Mobile Access Gateway can comprise: information is preserved submodule 21, association is set up submodule 23 and transmitted submodule 25.
Wherein, information is preserved submodule 21, be used for if the described agent binding information that announcement receiver module 11 receives comprises the agent binding information of other Mobile Access Gateways that described terminal is relevant, described other Mobile Access Gateways are in the relevant Mobile Access Gateway of described terminal, gateway except that the current Mobile Access Gateway that receives described agent binding notice message, do not comprise the data forwarding association of described other Mobile Access Gateways in the described forwarding associated record of self preserving, then preserve the terminal iidentification in the agent binding information of described other Mobile Access Gateways that receive, the interface identifier that described terminal provides for described other Mobile Access Gateways, the home network prefix that described other Mobile Access Gateways are described terminal distribution and the IP address of described other Mobile Access Gateways;
Transmit submodule 25, be used for after association is set up submodule 23 and set up described data forwarding association, if source IP address or purpose IP address in the IP message that receives are described terminal and the corresponding home address of described other Mobile Access Gateways, then described IP message is forwarded to the IP address of described other Mobile Access Gateways.Information is preserved submodule 21, submodule 23 is set up in association and forwarding submodule 25 is set up the method for the data association between the Mobile Access Gateway, specifically can be with reference to associated description and Fig. 1 b among the method embodiment of terminal access in the heterogeneous network of the present invention.
Further, Mobile Access Gateway can also comprise:
When the agent binding record of the terminal that present embodiment has been preserved on the local mobile anchor point takes place to upgrade, the announcement receiver module receives that described local mobile anchor point sends carries the agent binding notice message of the agent binding record after the renewal, each submodule basis agent binding information wherein of relating module can be set up the data forwarding association between the relevant Mobile Access Gateway of terminal, therefore, when being connected to a plurality of Mobile Access Gateway by a plurality of interfaces, communicate with each other between a plurality of interfaces, make terminal in the IP of service application message, use any one to distribute to the IP address of terminal, and can use any one interface to transmit these IP messages of transmitting-receiving, realize flexible and efficient many interfaces/many ownership management.
Figure 11 is the structural representation of a kind of embodiment of local mobile anchor point of the present invention, as shown in figure 11, this local mobile anchor point can comprise: announcement sending module 31, be used for sending to the relevant Mobile Access Gateway of described terminal the agent binding notice message of the agent binding record after carrying renewal, the agent binding record after the described renewal comprises that the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration.
Particularly, when terminal uses the interface of a plurality of different radio technology to be connected to network, if the agent binding of the terminal of having preserved on local mobile anchor point record upgrades, the announcement sending module 31 of local mobile anchor point can send the agent binding notice message of the agent binding record after carrying renewal to the relevant all Mobile Access Gateways of terminal respectively; Each Mobile Access Gateway is after receiving the agent binding notice message, comprise that according to the record of the agent binding after upgrading the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration, the data forwarding that can set up between self other Mobile Access Gateways relevant with terminal is related.Follow-up, if this Mobile Access Gateway receives the IP message that terminal sends to other Mobile Access Gateways, then this IP message can be transmitted to corresponding Mobile Access Gateway.
When the agent binding record of the terminal that present embodiment has been preserved on the local mobile anchor point takes place to upgrade, the agent binding notice message that carries the agent binding record after the renewal that the announcement sending module sends to each relevant Mobile Access Gateway, thereby set up the data forwarding association between the relevant Mobile Access Gateway of terminal, therefore, when being connected to a plurality of Mobile Access Gateway by a plurality of interfaces, communicate with each other between a plurality of interfaces, make terminal in the IP of service application message, use any one to distribute to the IP address of terminal, and can use any one interface to transmit these IP messages of transmitting-receiving, realize flexible and efficient many interfaces/many ownership management.
Figure 12 is the structural representation of another embodiment of local mobile anchor point of the present invention, as shown in figure 12, on the basis of an embodiment, this local mobile anchor point can also comprise on the local mobile anchor point of the present invention: receiver module 41, module 43 is set up in binding and module 45 is returned in affirmation.
Wherein, receiver module 41, be used to receive the agent binding update messages that described Mobile Access Gateway sends, described agent binding is used for the home network prefix that the terminal iidentification that updating message comprises described terminal, the interface identifier that described terminal provides for described other Mobile Access Gateways, described Mobile Access Gateway be described terminal distribution and the IP address of described Mobile Access Gateway;
Confirm to return module 45, being used for setting up module 43 in binding sets up between the Care-of Address of described home network prefix and described terminal after the agent binding, return proxy binding acknowledgment messages to described Mobile Access Gateway, described proxy binding acknowledgment messages comprises described terminal iidentification, interface identifier, home network prefix, Care-of Address and described binding priority and binding logo, and indicates described announcement sending module 31 to send described agent binding notice message.
Particularly, when terminal uses the interface of a plurality of different radio technology to be connected to network, receiver module 41 receives the agent binding update messages that described Mobile Access Gateway sends, binding is set up module 43 with the IP address of the described Mobile Access Gateway Care-of Address as described terminal, set up the agent binding between the Care-of Address of home network prefix that this Mobile Access Gateway is a terminal distribution and described terminal, and be that this agent binding distributes binding priority and binding logo according to UAD; If indication need be returned response in the agent binding update messages, confirm that then returning module 45 can return proxy binding acknowledgment messages to Mobile Access Gateway.Then, if the agent binding of the terminal of having preserved on local mobile anchor point record upgrades, the announcement sending module 31 of local mobile anchor point can send the agent binding notice message of the agent binding record after carrying renewal to the relevant all Mobile Access Gateways of terminal respectively; Each Mobile Access Gateway is after receiving the agent binding notice message, comprise that according to the record of the agent binding after upgrading the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration, the data forwarding that can set up between self other Mobile Access Gateways relevant with terminal is related.Follow-up, if this Mobile Access Gateway receives the IP message that terminal need send to other Mobile Access Gateways, then this IP message can be transmitted to corresponding Mobile Access Gateway.
When the agent binding record of the terminal that present embodiment has been preserved on the local mobile anchor point takes place to upgrade, the agent binding notice message that carries the agent binding record after the renewal that the announcement sending module sends to each relevant Mobile Access Gateway, thereby set up the data forwarding association between the relevant Mobile Access Gateway of terminal, therefore, when being connected to a plurality of Mobile Access Gateway by a plurality of interfaces, communicate with each other between a plurality of interfaces, make terminal in the IP of service application message, use any one to distribute to the IP address of terminal, and can use any one interface to transmit these IP messages of transmitting-receiving, realize flexible and efficient many interfaces/many ownership management.
Figure 13 is the structural representation of another embodiment of Mobile Access Gateway of the present invention, as shown in figure 13, this Mobile Access Gateway can comprise: sending module 51, be used for sending agent binding update messages to the local mobile anchor point, described agent binding update messages comprises that new interface sign, the new Mobile Access Gateway after the switching after terminal iidentification, the switching is the IP address of the new home network prefix of described terminal distribution, described new Mobile Access Gateway and switches indication parameter that described switching indication parameter is set to switch; After perhaps being used for data forwarding passage after described local mobile anchor point switches and being set to point to described new Mobile Access Gateway, the follow-up described terminal that receives is transmitted to described local mobile anchor point by the IP message that new interface sends; The IP message that the described local mobile anchor point that maybe will receive sends to described terminal is transmitted to described terminal by new interface.
Particularly, when terminal uses the interface of a plurality of different radio technology to be connected to network, can preferentially use an interface to carry out data transmit-receive, when detecting the switching of terminal generation interface, the sending module 51 of Mobile Access Gateway sends agent binding update messages to the local mobile anchor point, described agent binding update messages comprises terminal iidentification, new interface sign after the switching, new Mobile Access Gateway after the switching is the new home network prefix of described terminal distribution, the IP address of described new Mobile Access Gateway and switching indication parameter, wherein, switching indication parameter is set to switch; After data forwarding passage after described local mobile anchor point switches is set to point to described new Mobile Access Gateway, sending module 51 can be transmitted to described local mobile anchor point by the IP message that described new interface sends with the follow-up described terminal that receives, and the IP message that the described local mobile anchor point that perhaps will receive sends to described terminal is transmitted to described terminal by described new interface.
The present embodiment sending module is after the local mobile anchor point sends the relevant information comprise new Mobile Access Gateway and switches the agent binding update messages that indication parameter is set to switch, the local mobile anchor point can comprise that the data forwarding passage after the switching is set to point to new Mobile Access Gateway, new Mobile Access Gateway and the new interface of realization after switch carried out the transmitting-receiving of IP message, when terminal uses the interface of a plurality of different radio technology to be connected to network, can realize the switching between many interfaces, method is simple, does not need to revise the IP stack and the IP layer service flow process of terminal.
Figure 14 is the structural representation of another embodiment of Mobile Access Gateway of the present invention, and as shown in figure 14, on the basis of an embodiment on the Mobile Access Gateway of the present invention, further, this Mobile Access Gateway can also comprise:
Particularly, when terminal uses the interface of a plurality of different radio technology to be connected to network, can preferentially use an interface to carry out data transmit-receive, terminal can be initiated or network side is initiatively initiated for terminal to the switching of new interface from old interface, wherein, detection module 61 detects described terminal and sends the IP message to described new Mobile Access Gateway, can judge that interface takes place to be switched; The detection module 61 of described new Mobile Access Gateway or old Mobile Access Gateway detects radio link quality and satisfies switching condition, can judge that interface takes place to be switched.When the detection module 61 of Mobile Access Gateway detects the switching of terminal generation interface, can indicate sending module 51 to send and have the agent binding update messages that switches indication parameter to the local mobile anchor point.
In addition, for reduce switched in the packet loss of transfer of data, further, the sending module 51 of this Mobile Access Gateway can also be used for, the described old Mobile Access Gateway transmission switch indicating information before switching;
Mobile Access Gateway can also comprise: receiver module 66, the switching response message of be used for after sending module 51 sends switch indicating information, the described old Mobile Access Gateway of reception returning; Perhaps receive the IP message of the described terminal of described old Mobile Access Gateway forwarding from the data forwarding passage between described old Mobile Access Gateway and the described new Mobile Access Gateway.
Wherein, can send switch indicating information mutually between new Mobile Access Gateway and the old Mobile Access Gateway, because it is related to set up data forwarding between old Mobile Access Gateway and the described new Mobile Access Gateway, have the data forwarding passage, therefore new Mobile Access Gateway can lead to the IP message of the terminal that receives old Mobile Access Gateway forwarding by this data forwarding.
After present embodiment receiver module local mobile anchor point sends the relevant information comprise new Mobile Access Gateway and switches the agent binding update messages that indication parameter is set to switch, the local mobile anchor point can comprise that the data forwarding passage after the switching is set to point to new Mobile Access Gateway, new Mobile Access Gateway and the new interface of realization after switch carried out the transmitting-receiving of IP message, when terminal uses the interface of a plurality of different radio technology to be connected to network, can realize switching and flow mobility function between many interfaces, method is simple, does not need to revise the IP stack and the IP layer service flow process of terminal.
Figure 15 is the structural representation of another embodiment of local mobile anchor point of the present invention, and as shown in figure 15, this local mobile anchor point can comprise: receiver module 71 and module 73 is set.
Wherein, receiver module 71, be used to receive the agent binding update messages that new Mobile Access Gateway sends, described agent binding update messages comprises the IP address that the new interface sign after terminal iidentification, the switching, described new Mobile Access Gateway are the new home network prefix of described terminal distribution, described new Mobile Access Gateway and switches indication parameter;
Particularly, when terminal uses the interface of a plurality of different radio technology to be connected to network, can preferentially use an interface to carry out data transmit-receive, when new Mobile Access Gateway detects the switching of terminal generation interface, the receiver module 71 of local mobile anchor point receives the agent binding update messages that new Mobile Access Gateway sends, if the switching indication parameter in the agent binding update messages is set to switch, the data forwarding passage that module 73 old Mobile Access Gateways then are set are the old home network prefix correspondence of described terminal distribution is set to point to described new Mobile Access Gateway.
After present embodiment local mobile anchor point receives the relevant information that comprises new Mobile Access Gateway and switches the agent binding update messages that indication parameter is set to switch, can comprise that the data forwarding passage after the switching is set to point to new Mobile Access Gateway, new Mobile Access Gateway and the new interface of realization after switch carried out the transmitting-receiving of IP message, when terminal uses the interface of a plurality of different radio technology to be connected to network, can realize the switching between many interfaces, and this method is simple, does not need to revise the IP stack and the IP layer service flow process of terminal.
Figure 16 is the structural representation of another embodiment of local mobile anchor point of the present invention, and as shown in figure 16, on the basis of an embodiment on the local mobile anchor point of the present invention, this local mobile anchor point can also comprise: flow module 81 and/or priority block 83.
Wherein, flow module 81 is used for if described agent binding update messages comprises flow descriptors, and then according to described flow descriptors, the data forwarding passage of the business data flow that switches is set to point to described new Mobile Access Gateway; In agent binding update messages, increase the stream description of service switchover data flow, can indicate which business data flow of local mobile anchor point that switching has taken place, thereby the data forwarding passage of the business data flow that switches is set to point to described new Mobile Access Gateway, realizes stream mobility (flowmobility) function.
After present embodiment local mobile anchor point receives the relevant information that comprises new Mobile Access Gateway and switches the agent binding update messages that indication parameter is set to switch, can comprise that the data forwarding passage after the switching is set to point to new Mobile Access Gateway, new Mobile Access Gateway and the new interface of realization after switch carried out the transmitting-receiving of IP message, when terminal uses the interface of a plurality of different radio technology to be connected to network, can realize the switching between many interfaces, and this method is simple, does not need to revise the IP stack and the IP layer service flow process of terminal; Flow module is provided with the data forwarding passage of business data flow by flow descriptors, can be that unit switches with the business, and switching mode is flexible; The binding priority of the new Mobile Access Gateway after priority block can be switched is set to high priority, further guarantees handover success.
Figure 17 is the structural representation of another embodiment of local mobile anchor point of the present invention, and as shown in figure 17, this local mobile anchor point can comprise:
Particularly, using PMIP to carry out in the heterogeneous network of mobile management, terminal can insert different networks respectively by different interfaces, and terminal can adopt corresponding interface and Mobile Access Gateway transmitting-receiving IP message.Terminal can initiatively be initiated for terminal to the switching of new interface from old interface, when detecting radio link quality, terminal changes, when satisfying switching condition, terminal can select to switch to new interface automatically, and the user also can directly manually select to switch to new interface on terminal.After selection switched to new interface, terminal sent the IP message by the new Mobile Access Gateway that new interface inserts to network, and new Mobile Access Gateway is transmitted the IP message that receives from terminal to the local mobile anchor point.If the detection module 91 of local mobile anchor point detects terminal and sends the IP message by new Mobile Access Gateway to network, the data forwarding passage that module 93 can described terminal is set is set to point to new Mobile Access Gateway.
Further, module 93 being set can comprise at least with next sub-module:
Wherein, the data forwarding passage of priority submodule 931, network prefix submodule 932, Indication message submodule 933 terminals be set to point to the concrete grammar of new Mobile Access Gateway can be with reference to Fig. 8 and associated description thereof.
In the present embodiment, the detection module of local mobile anchor point detects terminal when new Mobile Access Gateway sends the IP message, module is set is set to point to new Mobile Access Gateway from pointing to old Mobile Access Gateway by the data forwarding passage, when terminal uses the interface of a plurality of different radio technology to be connected to network, can realize the switching between many interfaces, and this method is simple, does not need to revise the IP stack and the IP layer service flow process of terminal.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (25)
1. the method that terminal inserts in the heterogeneous network is characterized in that, comprising:
The agent binding notice message that carries the agent binding record after the renewal that receives that the local mobile anchor point sends, the agent binding record after the described renewal comprises that the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration;
According to the forwarding associated record of described agent binding information and self preservation, set up the data forwarding association between the relevant Mobile Access Gateway of described terminal.
2. the method that terminal inserts in the heterogeneous network according to claim 1, it is characterized in that, described forwarding associated record according to described agent binding information and self preservation is set up the data forwarding association between the relevant Mobile Access Gateway of described terminal, comprising:
If comprise the agent binding information of other Mobile Access Gateways that described terminal is relevant in the described agent binding information that receives, described other Mobile Access Gateways are in the relevant Mobile Access Gateway of described terminal, gateway except that the current Mobile Access Gateway that receives described agent binding notice message, do not comprise the data forwarding association of described other Mobile Access Gateways in the described forwarding associated record of self preserving, then preserve the terminal iidentification in the agent binding information of described other Mobile Access Gateways that receive, the interface identifier that described terminal provides for described other Mobile Access Gateways, the home network prefix that described other Mobile Access Gateways are described terminal distribution and the IP address of described other Mobile Access Gateways;
The home address that the terminal of setting up described terminal iidentification correspondence respectively and described other Mobile Access Gateways are corresponding is related to the data forwarding between the IP address of described other Mobile Access Gateways, and the described terminal home address corresponding with described other Mobile Access Gateways is that described other Mobile Access Gateways are the home network prefix of described terminal distribution and the combination of described interface identifier;
If source IP address or purpose IP address in the IP message that receives are described terminal and the corresponding home address of described other Mobile Access Gateways, then described IP message is forwarded to the IP address of described other Mobile Access Gateways.
3. the method that terminal inserts in the heterogeneous network according to claim 1 and 2 is characterized in that, also comprises:
If comprising described local mobile anchor point in the described agent binding notice message is the binding priority of the proxy binding register distribution of the relevant Mobile Access Gateway of described terminal, then according to described binding priority and definite related priority of described data forwarding; And/or
If comprising described local mobile anchor point in the described agent binding notice message is the proxy binding register distribution binding logo of the relevant Mobile Access Gateway of described terminal, then determine the sign of described data forwarding association according to described binding logo.
4. the method that terminal inserts in the heterogeneous network is characterized in that, comprising:
Send the agent binding notice message that the agent binding after carrying renewal writes down to the relevant Mobile Access Gateway of described terminal, the agent binding record after the described renewal comprises that the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration.
5. the method that terminal inserts in the heterogeneous network according to claim 4 is characterized in that, also comprises:
Receive the agent binding update messages that described Mobile Access Gateway sends, described agent binding update messages comprises interface identifier that the terminal iidentification of described terminal, described terminal provide for described Mobile Access Gateway, home network prefix that described Mobile Access Gateway is described terminal distribution and the IP address of described Mobile Access Gateway;
With the IP address of described Mobile Access Gateway Care-of Address as described terminal, set up the agent binding between the Care-of Address of described home network prefix and described terminal, and be that this agent binding distributes binding priority and binding logo according to UAD;
Return proxy binding acknowledgment messages to described Mobile Access Gateway, described proxy binding acknowledgment messages comprises Care-of Address and the described binding priority and the binding logo of described terminal iidentification, interface identifier, home network prefix, terminal.
6. a Mobile Access Gateway is characterized in that, comprising:
The announcement receiver module, be used to receive that the local mobile anchor point sends carries the agent binding notice message of the agent binding record after the renewal, the agent binding record after the described renewal comprises that the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration;
Relating module is used for agent binding information that receives according to described announcement receiver module and the forwarding associated record of self preserving, and sets up the data forwarding association between the relevant Mobile Access Gateway of described terminal.
7. Mobile Access Gateway according to claim 6 is characterized in that, described relating module comprises:
Information is preserved submodule, be used for if the described agent binding information that described announcement receiver module receives comprises the agent binding information of other Mobile Access Gateways that described terminal is relevant, described other Mobile Access Gateways are in the relevant Mobile Access Gateway of described terminal, gateway except that the current Mobile Access Gateway that receives described agent binding notice message, do not comprise the data forwarding association of described other Mobile Access Gateways in the described forwarding associated record of self preserving, then preserve the terminal iidentification in the agent binding information of described other Mobile Access Gateways that receive, the interface identifier that described terminal provides for described other Mobile Access Gateways, the home network prefix that described other Mobile Access Gateways are described terminal distribution and the IP address of described other Mobile Access Gateways;
Submodule is set up in association, be used for preserving described terminal iidentification, described interface identifier, described home network prefix and the described IP address that submodule is preserved according to described information, the home address that the terminal of setting up described terminal iidentification correspondence respectively and described other Mobile Access Gateways are corresponding is related to the data forwarding between the IP address of described other Mobile Access Gateways, and the described terminal home address corresponding with described other Mobile Access Gateways is that described other Mobile Access Gateways are the home network prefix of described terminal distribution and the combination of described interface identifier;
Transmit submodule, be used for after described association is set up submodule and set up described data forwarding association, if source IP address or purpose IP address in the IP message that receives are described terminal and the corresponding home address of described other Mobile Access Gateways, then described IP message is forwarded to the IP address of described other Mobile Access Gateways.
8. according to claim 6 or 7 described Mobile Access Gateways, it is characterized in that, also comprise:
Priority block, be used for then determining the priority of described data forwarding association according to described binding priority if it is the binding priority and the binding logo of the proxy binding register distribution of the relevant Mobile Access Gateway of described terminal that described agent binding notice message comprises described local mobile anchor point; And/or, be the proxy binding register distribution binding logo of the relevant Mobile Access Gateway of described terminal if comprise described local mobile anchor point in the described agent binding notice message, then determine the sign of described data forwarding association according to described binding logo.
9. a local mobile anchor point is characterized in that, comprising:
The announcement sending module, be used for sending to the relevant Mobile Access Gateway of described terminal the agent binding notice message of the agent binding record after carrying renewal, the agent binding record after the described renewal comprises that the relevant Mobile Access Gateway of described terminal is the agent binding information of described endpoint registration.
10. local mobile anchor point according to claim 9 is characterized in that, also comprises:
Receiver module, be used to receive the agent binding update messages that described Mobile Access Gateway sends, it is the home network prefix of described terminal distribution and the IP address of described Mobile Access Gateway that described agent binding is used for the terminal iidentification that updating message comprises described terminal, the interface identifier that described terminal provides for described Mobile Access Gateway, described Mobile Access Gateway;
Module is set up in binding, be used for the Care-of Address of the IP address of described Mobile Access Gateway that described receiver module is received as described terminal, set up the agent binding between the Care-of Address of described home network prefix and described terminal, and be that this agent binding distributes binding priority and binding logo according to UAD;
Confirm to return module, being used for setting up module in described binding sets up between the Care-of Address of described home network prefix and described terminal after the agent binding, return proxy binding acknowledgment messages to described Mobile Access Gateway, described proxy binding acknowledgment messages comprises Care-of Address and the described binding priority and the binding logo of described terminal iidentification, interface identifier, home network prefix, terminal, and indicates described announcement sending module to send described agent binding notice message.
11. the method that heterogeneous network switches is characterized in that, comprising:
New Mobile Access Gateway after the switching sends agent binding update messages to the local mobile anchor point, described agent binding update messages comprises the IP address that the new interface sign after terminal iidentification, the switching, described new Mobile Access Gateway are the new home network prefix of described terminal distribution, described new Mobile Access Gateway and switches indication parameter that described switching indication parameter is set to switch;
After the data forwarding passage of described new Mobile Access Gateway after described local mobile anchor point switches is set to point to described new Mobile Access Gateway, the follow-up described terminal that receives is transmitted to described local mobile anchor point by the IP message that new interface sends; The IP message that the described local mobile anchor point that maybe will receive sends to described terminal is transmitted to described terminal by new interface.
12. the method that heterogeneous network according to claim 11 switches is characterized in that, the new Mobile Access Gateway after the described switching comprised before the local mobile anchor point sends agent binding update messages:
Described new Mobile Access Gateway detects described terminal and sends the IP message by new interface to described new Mobile Access Gateway; Or
Described new Mobile Access Gateway or old Mobile Access Gateway detect radio link quality and satisfy switching condition.
13. the method according to claim 11 or 12 described heterogeneous networks switchings is characterized in that the new Mobile Access Gateway after the described switching also comprises after the local mobile anchor point sends agent binding update messages:
Described new Mobile Access Gateway sends switch indicating information to described old Mobile Access Gateway;
Described new Mobile Access Gateway receives the switching response message that described old Mobile Access Gateway returns;
Described new Mobile Access Gateway receives the IP message of the described terminal of described old Mobile Access Gateway forwarding from the data forwarding passage between described old Mobile Access Gateway and the described new Mobile Access Gateway.
14. the method that heterogeneous network switches is characterized in that, comprising:
Receive the agent binding update messages that new Mobile Access Gateway sends, described agent binding update messages comprises the IP address that the new interface sign after terminal iidentification, the switching, described new Mobile Access Gateway are the new home network prefix of described terminal distribution, described new Mobile Access Gateway and switches indication parameter;
If described switching indication parameter is set to switch, then old Mobile Access Gateway is that the data forwarding passage of the old home network prefix correspondence of described terminal distribution is set to point to described new Mobile Access Gateway.
15. the method that heterogeneous network according to claim 14 switches is characterized in that described agent binding update messages also comprises flow descriptors, described method also comprises:
According to described flow descriptors, the data forwarding passage of the business data flow that switches is set to point to described new Mobile Access Gateway.
16. the method according to claim 14 or 15 described heterogeneous networks switchings is characterized in that, also comprises:
Is high priority with described terminal by the binding priority update in the agent binding information of described new Mobile Access Gateway registration; And/or
Is low priority with described terminal by the binding priority update in the agent binding information of described old Mobile Access Gateway registration.
17. a Mobile Access Gateway is characterized in that, comprising:
Sending module, be used for sending agent binding update messages to the local mobile anchor point, described agent binding update messages comprises that new interface sign, the new Mobile Access Gateway after the switching after terminal iidentification, the switching is the IP address of the new home network prefix of described terminal distribution, described new Mobile Access Gateway and switches indication parameter that described switching indication parameter is set to switch; After perhaps being used for data forwarding passage after described local mobile anchor point switches and being set to point to described new Mobile Access Gateway, the follow-up described terminal that receives is transmitted to described local mobile anchor point by the IP message that new interface sends; The IP message that the described local mobile anchor point that maybe will receive sends to described terminal is transmitted to described terminal by new interface.
18. Mobile Access Gateway according to claim 17 is characterized in that, also comprises:
Detection module, be used to detect described terminal by new interface to described new Mobile Access Gateway send the IP message and/or detect radio link quality satisfy switching condition after, indicate described sending module to send described agent binding update messages.
19. according to claim 17 or 18 described Mobile Access Gateways, it is characterized in that,
The described old Mobile Access Gateway that described sending module also is used for before switching sends switch indicating information;
Described Mobile Access Gateway also comprises:
Receiver module, the switching response message of be used for after described sending module sends switch indicating information, the described old Mobile Access Gateway of reception returning; Perhaps receive the IP message of the described terminal of described old Mobile Access Gateway forwarding from the data forwarding passage between described old Mobile Access Gateway and the described new Mobile Access Gateway.
20. a local mobile anchor point is characterized in that, comprising:
Receiver module, be used to receive the agent binding update messages that new Mobile Access Gateway sends, described agent binding update messages comprises the IP address that the new interface sign after terminal iidentification, the switching, described new Mobile Access Gateway are the new home network prefix of described terminal distribution, described new Mobile Access Gateway and switches indication parameter;
Module is set, is used for if described switching indication parameter is set to switch, then old Mobile Access Gateway is that the data forwarding passage of the old home network prefix correspondence of described terminal distribution is set to point to described new Mobile Access Gateway.
21. local mobile anchor point according to claim 20 is characterized in that, also comprises:
Flow module is used for if described agent binding update messages comprises flow descriptors, and then according to described flow descriptors, the data forwarding passage of the business data flow that switches is set to point to described new Mobile Access Gateway; And/or
Priority block, the binding priority update that is used for the agent binding information of described terminal and described new Mobile Access Gateway is a high priority; And/or be low priority with the binding priority update in the agent binding information of described terminal and described old Mobile Access Gateway.
22. the method that heterogeneous network switches is characterized in that, comprising:
Detect terminal and send the IP message to network by new Mobile Access Gateway;
The data forwarding passage of described terminal is set to point to described new mobile mobile gateway from pointing to old Mobile Access Gateway.
23. the method that heterogeneous network according to claim 22 switches is characterized in that the data forwarding passage of described terminal is set to point to described new mobile mobile gateway from pointing to old Mobile Access Gateway, comprises at least one following steps:
With the binding priority update in the agent binding information of described new Mobile Access Gateway registration is high priority;
With the binding priority update in the agent binding information of described old Mobile Access Gateway registration is low priority;
Old Mobile Access Gateway is that the data forwarding passage of the old home network prefix correspondence of described terminal distribution is set to point to described new Mobile Access Gateway;
The agent binding Indication message of agent binding information after described new Mobile Access Gateway transmission comprises renewal, described new Mobile Access Gateway registration, agent binding Indication message after described old Mobile Access Gateway sends renewal, that comprise the agent binding information of described old Mobile Access Gateway registration.
24. a local mobile anchor point is characterized in that, comprising:
Detection module is used to detect terminal and sends the IP message by new Mobile Access Gateway to network;
Module is set, is used for the detection according to described detection module, the data forwarding passage of described terminal is set to point to described new mobile mobile gateway from pointing to old Mobile Access Gateway.
25. the method that heterogeneous network according to claim 24 switches is characterized in that, the described module that is provided with comprises at least with next sub-module:
The priority submodule is used for the detection according to described detection module, is high priority with the binding priority update in the agent binding information of described new Mobile Access Gateway registration; And/or, be low priority with the binding priority update in the agent binding information of described old Mobile Access Gateway registration;
The network prefix submodule is used for the detection according to described detection module, and old Mobile Access Gateway is that the data forwarding passage of the old home network prefix correspondence of described terminal distribution is set to point to described new Mobile Access Gateway;
The Indication message submodule, be used for detection according to described detection module, send the agent binding Indication message of the agent binding information that comprises described new Mobile Access Gateway registration to described new Mobile Access Gateway, send the update agent binding information of the agent binding information that comprises described old Mobile Access Gateway registration to described old Mobile Access Gateway.
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