CN1984021A - System and method for accessing 3GPP deductive network by non-3GPP technology - Google Patents
System and method for accessing 3GPP deductive network by non-3GPP technology Download PDFInfo
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- CN1984021A CN1984021A CN 200610083663 CN200610083663A CN1984021A CN 1984021 A CN1984021 A CN 1984021A CN 200610083663 CN200610083663 CN 200610083663 CN 200610083663 A CN200610083663 A CN 200610083663A CN 1984021 A CN1984021 A CN 1984021A
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Abstract
This invention discloses 3GPP access evolution system through non-third generation cooperation organization technique, this system includes the contiguous non 3GPP anchor and different access system anchor; non 3GPP anchor is used to create the supporting access transmission tunnel passing through non 3GPP technique access user end(UE); the different access system anchor is used to create the transmission tunnel for supporting UE and the external network communication between itself and non 3GPP. This invention also discloses the 3GPP access evolution network through non 3GPP technique, the non 3GPP anchor creates the supporting access transmission tunnel passing through non 3GPP, it also establishes the transmission tunnel for supporting UE and external network communication; and allocates IP address to access external network for UE. The system and method of this invention all guarantee UE have successful access 3GPP evolution network through non 3GPP technique.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of system and method that inserts the 3GPP evolvement network by non-3rd Generation Partnership Project (3GPP) technology.
Background technology
Along with development of Communication Technique, 3GPP is attempting studying a kind of evolvement network, to be applied to future communications.Usually, the described evolvement network of 3GPP research can be called the 3GPP evolvement network; This 3GPP evolvement network is mainly by evolution wireless access network (Evolved RAN) and evolution block core net (Evolved Packet Core, EPC) composition.
Referring to Fig. 1, Fig. 1 is the 3GPP evolution network framework figure of prior art.Among Fig. 1, comprise anchor point between continuous Mobility Management Entity (MME)/user entity (UPE) and different access systems (Inter Access System Anchor, Inter AS Anchor) among the EPC; MME/UPE links to each other with EvolvedRAN, Inter AS Anchor links to each other with external network, non-3GPP Internet protocol Access Network (non 3GPPIP Access Network), 3GPP Internet protocol Access Network (3GPP IP Access Network), and this 3GPP IP Access Network can be a WLAN (wireless local area network) 3GPP Internet protocol Access Network (WLAN 3GPP IP Access Network) etc.; MME/UPE also links to each other with general packet radio service core net (GPRS Core) with Inter AS Anchor.The communication entity that includes 2.5G among the described GPRS Core also includes Serving GPRS Support Node (SGSN), the GGSN communication entities such as (GGSN) of 3G.
Have, GPRS Core also can (GSM/EDGE RAN GERAN) links to each other, and also can link to each other with Universal Terrestrial Radio Access Network Access Networks such as (UTRAN) with global system for mobile communications/enhancement mode global system for mobile communications message transmission rate wireless access network again; In addition, home subscriber server (HSS) links to each other with EPC, and strategy and charging rule functions (PCRF) entity links to each other with external network with EPC respectively.
Because the communication protocol at above-mentioned 3GPP evolution network framework also is in the formulation stage, describe so just carried out following principle in the present communication protocol: user terminal (UE) can insert the EPC of 3GPP evolvement network by non-3GPP technology; But clearly do not stipulate how to make UE insert the 3GPP evolvement network in the communication protocol as yet by non-3GPP technology.As seen, present still lacking, make the implementation method of UE by non-3GPP technology access 3GPP evolvement network, so UE can't waltz through non-3GPP technology access 3GPP evolvement network at present.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of system by non-3GPP technology access 3GPP evolvement network, makes UE insert the 3GPP evolvement network by non-3GPP technology.
Another object of the present invention is to provide a kind of method, make UE insert the 3GPP evolvement network by non-3GPP technology by non-3GPP technology access 3GPP evolvement network.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention discloses a kind of system, it is characterized in that this system comprises continuous non-3GPP anchor point (non 3GPP Anchor) and Inter AS Anchor by non-3GPP technology access 3GPP evolvement network;
Wherein, non 3GPP Anchor is used to the UE that inserts by non-3GPP technology to set up the transmission tunnel of supporting access;
Inter AS Anchor links to each other with external network, is used for setting up between self and non 3GPP Anchor the transmission tunnel of supporting UE and external network communication.
Described non 3GPP Anchor is further used for before setting up described transmission tunnel UE being carried out identification authentication, service authorization operation.
Non 3GPP Anchor is further used for writing down the access network information at the current place of inserting by non-3GPP technology of UE;
Inter AS Anchor is further used for following the tracks of and writing down the access way of the current employing of UE and/or UE is carried out the operation relevant with charging with strategy.
The described non-3GPP technology of using when UE inserts is supported by the non3GPP IP Access Network that links to each other with non 3GPP Anchor.
Non 3GPP Anchor further links to each other with MME/UPE, and/or links to each other with GPRS Core;
Inter AS Anchor further links to each other with GPRS Core and/or HSS.
The described transmission tunnel that non 3GPP Anchor sets up is IP safety (Ipsec) tunnel between self and the UE;
The described transmission tunnel that Inter AS Anchor sets up is GPRS Tunnel Protocol (GTP) tunnel.
The invention also discloses and a kind ofly insert the method for 3GPP evolvement network, be applied to by in the non 3GPP Anchor that links to each other, the evolution block core net that Inter AS Anchor is formed by non-3GPP technology; This method may further comprise the steps:
A.non 3GPP Anchor sets up the transmission tunnel of supporting access for the UE that inserts by non-3GPP technology; Between Inter AS Anchor and non 3GPP Anchor, set up the transmission tunnel of the external network communication of supporting that UE is connected with Inter AS Anchor;
B.Inter AS Anchor is that UE divides the IP address that is used in the visit external network.
Steps A is triggered by the service request that described UE sends by non-3GPP technology.
In the steps A, the process that non 3GPP Anchor sets up described transmission tunnel is:
Non 3GPP Anchor by with the communication interaction of non 3GPP IP Access Network, set up the IPsec tunnel between non3GPP Anchor and the UE; And the transmission tunnel of this IPsec tunnel that will set up when carrying out subsequent data transmission as UE and non3GPP Anchor.
In the steps A, described foundation supports the process in the transmission tunnel of the external network communication that UE is connected with Inter AS Anchor to be:
Non 3GPP Anchor by with the communication interaction of Inter AS Anchor, set up the GTP tunnel between non 3GPP Anchor and the Inter AS Anchor; And the transmission tunnel of this GTP tunnel that will set up when carrying out subsequent data transmission as UE and external network.
In the steps A, the process that non 3GPP Anchor sets up described transmission tunnel is:
Non 3GPP Anchor by with the communication interaction of non 3GPP IP Access Network, set up the IPsec tunnel between non3GPP Anchor and the UE; And the transmission tunnel of this IPsec tunnel that will set up when carrying out subsequent data transmission as UE and non3GPP Anchor;
Described foundation supports the process in the transmission tunnel of the external network communication that UE is connected with Inter AS Anchor to be:
Non 3GPP Anchor by with the communication interaction of Inter AS Anchor, set up the GTP tunnel between non 3GPP Anchor and the Inter AS Anchor; And the transmission tunnel of this GTP tunnel that will set up when carrying out subsequent data transmission as UE and external network.
Among the step B, distribute the process of described IP address to be:
Non 3GPP Anchor is to the access request of Inter AS Anchor transmission at UE; When Inter ASAnchor receives from the access request of non 3GPP Anchor,, and IP address allocated is sent to UE for UE divides the IP address that is used in the visit external network.
Before the steps A, further UE is carried out identification authentication, service authorization operation by non 3GPP Anchor.
Compared with prior art, the system and method that inserts the 3GPP evolvement network by non-3GPP technology provided by the present invention, all can, the UE that inserts by non-3GPP technology support the transmission tunnel that inserts for setting up by non-3GPP anchor point, and the transmission tunnel of the external network communication that foundation support UE is connected with Inter AS Anchor between Inter AS Anchor and non-3GPP anchor point; Be that UE divides the IP address that is used in the visit external network also by Inter ASAnchor.
As seen, system and method provided by the present invention guarantees that all UE can insert the 3GPP evolvement network smoothly by non-3GPP technology.
Description of drawings
Fig. 1 is the 3GPP evolution network framework figure of prior art;
Fig. 2 is the 3GPP evolution network framework figure of a preferred embodiment of the present invention;
Fig. 3 is the flow chart that inserts the 3GPP evolvement network based on framework shown in Figure 2 by non-3GPP technology;
When being the roaming of a preferred embodiment of the present invention, Fig. 4 inserts the view of 3GPP evolvement network by non-3GPP technology;
Fig. 5 is the view by non-3GPP technology access 3GPP evolvement network during for the roaming of another preferred embodiment of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments to the detailed description of the invention.
The system and method that inserts the 3GPP evolvement network by non-3GPP technology provided by the present invention, all can, the UE that inserts by non-3GPP technology support the transmission tunnel that inserts for setting up by non-3GPP anchor point, and the transmission tunnel of the external network communication that foundation support UE is connected with Inter AS Anchor between Inter AS Anchor and non-3GPP anchor point; Be that UE divides the IP address that is used in the visit external network also by Inter AS Anchor.
Referring to Fig. 2, Fig. 2 is the 3GPP evolution network framework figure of a preferred embodiment of the present invention.Among Fig. 2, comprise MME/UPE, the Inter AS Anchor and the non 3GPP Anchor that link to each other in twos among the EPC; MME/UPE links to each other with Evolved RAN, Inter AS Anchor links to each other with external network, non 3GPPAnchor links to each other with non 3GPP IP Access Network, 3GPP IP Access Network, and this 3GPP IP Access Network can be WLAN 3GPP IP Access Network etc.Applied non-3GPP technology and 3GPP technology were by the support respectively of non 3GPP IP AccessNetwork, 3GPP IP Access Network institute when obviously, UE inserted EPC.
And MME/UPE, Inter AS Anchor also link to each other with GPRS Core in the image pattern 1 like that with non 3GPP Anchor, as: MME/UPE, Inter AS Anchor all link to each other with SGSN with non 3GPP Anchor.Have, SGSN and continuous GGSN thereof also link to each other with GERAN again, also can link to each other with Access Networks such as UTRAN; In addition, HSS links to each other with EPC, and the PCRF entity links to each other with external network with EPC respectively.
Particularly, the interface that Inter AS Anchor links to each other with SGSN, MME/UPE, non 3GPP Anchor can be the S5 interface, and the interface that Inter AS Anchor links to each other with external network can be the Gi interface; The interface that MME/UPE links to each other with SGSN, non 3GPP Anchor can be the GTP interface, and the interface that non 3GPP Anchor links to each other with SGSN also can be the GTP interface; The interface that MME/UPE links to each other with Evolved RAN can be the S1 interface; The interface that the such 3GPP IP AccessNetwork of non 3GPP Anchor and non 3GPP IPAccess Network, WLAN 3GPP IP Access Network links to each other can be the S2 interface; The interface that SGSN links to each other with GGSN can be a gn interface, and the interface that SGSN, GGSN link to each other with GERAN, UTRAN can be a Gb Interface; The interface that HSS links to each other with EPC can be the S6 interface, and the interface that the PCRF entity links to each other with EPC can be the S7 interface, and the interface that the PCRF entity links to each other with external network can be the Rx+ interface.
On function, non 3GPP Anchor is responsible for writing down the access network information at the current place of being inserted by 3GPP and non-3GPP technology of UE, as: when UE inserts non 3GPP Anchor by WLAN 3GPP IP AccessNetwork, non 3GPP Anchor by and UE between the Access Network information etc. at the current place of communication interaction record UE.Non 3GPP Anchor also has the function of authentication, mandate and statistical server/agency (AAA Server/Proxy), can carry out access authentication and service authorization etc. to the UE that inserts by non-3GPP technology, as: UE is carried out common IP Multimedia System (IMS) service authorization at present.Usually, the communication between UE and the non 3GPP Anchor is based on IKEv2 mobility and many ownership (MOBIKE) agreements.
Inter AS Anchor is responsible for following the tracks of and writing down the access way of the current employing of UE, as: GPRS access or non-3GPP access etc.; Inter AS Anchor can also be used in the IP address of visit based on the 3GPP packet switch domain service for UE divides.Have, Inter AS Anchor also has strategy and charge to implement function (PCEF) again, can carry out with 3G in similar strategy and billing operation.In concrete the application, InterAS Anchor can adopt the GTP agreement to communicate by letter with each connecting system that links to each other.
In actual applications, when UE will insert EPC by non-3GPP technology, UE can send service request to non 3GPP Anchor by non3GPP IP Access Network, and this service request can successfully be sent to non 3GPPAnchor based on addressing systems such as present applied dns resolution processes.
Confirm when non 3GPP Anchor receives from the service request of UE that UE will insert EPC, and then UE is carried out identification authentication, service authorization operation.Particularly, non 3GPP Anchor can realize the AAA Server/Proxy function that self has, uses prior art by finishing identification authentication, service authorization operation to UE with the communication interaction of UE.
Have again, non 3GPP Anchor also can carry out identification authentication, service authorization to UE to send mode request HSS such as authentication request or AAAServer/Proxy, just uses prior art by finishing identification authentication, service authorization operation to UE with the communication interaction of UE when HSS or AAA Server/Proxy receive the authentication request of non 3GPP Anchor.Certainly, when finishing identification authentication to UE, service authorization operation, HSS or AAA Server/Proxy can be notified to non 3GPP Anchor to send modes such as message with the authenticating result of authentication success or failure.
After successfully finishing identification authentication to UE, service authorization operation, non 3GPP Anchor sets up the transmission tunnel of supporting that UE inserts; Also between Inter AS Anchor and non 3GPP Anchor, set up the transmission tunnel of supporting UE and external network communication.
Particularly, non 3GPP Anchor set up to support the process in the described transmission tunnel that UE inserts to be generally: non 3GPP Anchor use prior art by with the communication interaction of non 3GPP IP Access Network, set up IPsec tunnel relatively more commonly used at present; And the transmission tunnel of this IPsec tunnel that will set up when carrying out subsequent data transmission as UE and non 3GPP Anchor.In the practical application, non 3GPP Anchor can send the tunnel to UE and set up success message after the foundation of described IPsec tunnel is finished, and the described IPsec of notice UE successfully sets up in the tunnel.
Between Inter AS Anchor and non 3GPP Anchor, set up to support the UE and the method in the transmission tunnel of external network communication to be generally: non 3GPP Anchor use prior art by with the communication interaction of Inter ASAnchor, set up the GTP tunnel of relatively using always at present; And the transmission tunnel of this GTP tunnel that will set up when carrying out subsequent data transmission as UE and external network.
Except will setting up above-mentioned transmission tunnel, to be that UE divides the IP address that is used in the visit external network also by Inter AS Anchor.
Distribute the detailed process of described IP address to be generally: non 3GPP Anchor sends at the accesses such as packet data protocol (PDP) context activation request of UE to Inter ASAnchor and asks; When Inter AS Anchor receives from the described access request of non 3GPP Anchor,, and IP address allocated is sent to UE for UE divides the IP address that is used in the visit external network.
Inter AS Anchor is generally the process that the IP address sends to UE: Inter AS Anchor will send to non 3GPPAnchor for the UE IP address allocated is carried in the PDP context activation response message, by non 3GPP Anchor the described IP address that is comprised in this PDP context activation response message is sent to UE again.Particularly, non 3GPP Anchor can be carried on described IP address described tunnel and sets up and send to UE in the success message.
So far, UE just can normally carry out follow-up data communication by non 3GPP anchor, Inter AS anchor and external network.
By the above as seen, when successfully set up the transmission tunnel between UE and non 3GPP anchor, Inter ASanchor, the external network and distributed for UE be used to visit the IP address of external network after, UE has just successfully inserted EPC; As for the data communication process that carries out between UE and the external network after this, then be the operation that UE can further carry out.Have again, be to improve communications security and distinguish the receptible business of different user terminals owing to UE is carried out the main purpose of described identification authentication, service authorization operation, so be not to influence the key issue that UE normally inserts EPC the operation that UE carries out described identification authentication, service authorization; Obviously, in actual applications, also can be UE be carried out described identification authentication, service authorization operation, but directly set up the transmission tunnel between UE and non3GPP anchor, Inter AS anchor, the external network and be used in the IP address of visiting external network for the UE branch.
In sum, 3GPP evolution network framework shown in Figure 2 makes UE insert the 3GPP evolvement network smoothly by non-3GPP technology; And the important traffic entity in the 3GPP evolvement network is non3GPP anchor and Inter AS anchor.Have, be not difficult to find out, the function of non 3GPP anchor and InterAS anchor is similar to SGSN, GGSN respectively; Therefore, in actual applications, determine concrete operations that non 3GPP anchor and Inter AS anchor are performed and this operation based on communication protocol the time, just can with reference to the performed corresponding operating of SGSN, GGSN and should operation based on communication protocol.
If the flow process of UE by non-3GPP technology access 3GPP evolvement network described based on framework shown in Figure 2, then as shown in Figure 3.Fig. 3 is that the included step of this flow process is described in detail in Fig. 2, therefore only the step that comprises in the flow process shown in Figure 3 is briefly described below based on framework shown in Figure 2 flow chart by non-3GPP technology access 3GPP evolvement network:
Step 310:non 3GPP Anchor receives the service request that UE sends by non-3GPP technology.Certainly, this service request normally sends to non 3GPPAnchor's by non 3GPP IP Access Network.
Step 320:non 3GPP Anchor carries out identification authentication, service authorization operation by self or request HSS and/or AAA Server etc. to UE.In actual applications, also can not carry out the operation of this step.
Step 330:non 3GPP Anchor sets up the transmission tunnel of supporting that UE inserts, as: the IPsec tunnel; Between Inter AS Anchor and non 3GPP Anchor, set up the transmission tunnel of supporting UE and external network communication, as: GTP tunnel.
Step 340:Inter AS Anchor is that UE divides the IP address that is used in the visit external network.
Usually there is not strict time order and function order between step 330 and the step 340, simultaneously execution in step 330 and step 340.
As seen, flow process shown in Figure 3 makes UE insert the 3GPP evolvement network smoothly by non-3GPP technology.
In actual applications, might roam into visit public land mobile network (VPLMN) from the Home Public Land Mobile Network network (HPLMN) that is positioned at before by the UE behind the EPC of non-3GPP technology access 3GPP evolvement network, this will cause the annexation between UE and the external network to change.Particularly, UE after the variation and the annexation between the external network can be represented by Fig. 4, Fig. 5.
Among Fig. 4, UE inserts non 3GPP anchor among the VPLMN by the non 3GPP IP Access Network among the VPLMN, and carries out data communication by Inter ASAnchor and the external network among this non 3GPP anchor, HPLMN.
Among Fig. 5, UE can insert non 3GPP anchor among the VPLMN by the non 3GPP IP Access Network among the VPLMN, and carries out data communication by InterAS Anchor and the external network among this non 3GPP anchor, VPLMN; Have, UE also can insert non 3GPP anchor among the HPLMN by the non 3GPP IP Access Network among the VPLMN, and carries out data communication by Inter AS Anchor and the external network among this non 3GPP anchor, HPLMN again.
Need to prove at last: as logic entity, MME, UPE, Inter AS Anchor can be arranged in the different physical entities respectively, also can be arranged at jointly in the identical physical entity, two that perhaps incite somebody to action wherein are arranged in the identical physical entity.
By the above as can be seen, the system and method by non-3GPP technology access 3GPP evolvement network provided by the present invention guarantees that all UE can insert the 3GPP evolvement network smoothly by non-3GPP technology.
Claims (13)
1, a kind of system by non-3rd Generation Partnership Project 3GPP technology access 3GPP evolvement network is characterized in that this system comprises anchor point Inter AS Anchor between continuous non-3GPP anchor point non 3GPP Anchor and different access systems;
Wherein, non 3GPP Anchor is used to the user terminal UE that inserts by non-3GPP technology to set up the transmission tunnel of supporting access;
Inter AS Anchor links to each other with external network, is used for setting up between self and non 3GPP Anchor the transmission tunnel of supporting UE and external network communication.
2, the system as claimed in claim 1 is characterized in that, described non 3GPP Anchor is further used for before setting up described transmission tunnel UE being carried out identification authentication, service authorization operation.
3, system as claimed in claim 1 or 2 is characterized in that:
Non 3GPP Anchor is further used for writing down the access network information at the current place of inserting by non-3GPP technology of UE;
Inter AS Anchor is further used for following the tracks of and writing down the access way of the current employing of UE and/or UE is carried out the operation relevant with charging with strategy.
4, system as claimed in claim 1 or 2 is characterized in that, the described non-3GPP technology of using when UE inserts is supported by the non-3GPP Internet protocol Access Network non 3GPP IPAccess Network that links to each other with non 3GPP Anchor.
5, system as claimed in claim 1 or 2 is characterized in that:
Non 3GPP Anchor further links to each other with Mobility Management Entity MME/ user entity UPE, and/or links to each other with general packet radio service core net GPRS Core;
Inter AS Anchor further links to each other with GPRS Core and/or home subscriber server HSS.
6, system as claimed in claim 1 or 2 is characterized in that, the described transmission tunnel that non 3GPP Anchor sets up is the IP safety IPsec tunnel between self and the UE;
The described transmission tunnel that Inter AS Anchor sets up is the GPRS Tunnel Protocol GTP tunnel.
7, a kind ofly insert the method for 3GPP evolvement network, be applied to by among the non3GPP Anchor that links to each other, the evolution block core net EPC that Inter AS Anchor is formed by non-3GPP technology; It is characterized in that this method may further comprise the steps:
A.non 3GPP Anchor sets up the transmission tunnel of supporting access for the UE that inserts by non-3GPP technology; Between Inter AS Anchor and non 3GPP Anchor, set up the transmission tunnel of the external network communication of supporting that UE is connected with Inter AS Anchor;
B.Inter AS Anchor is that UE divides the IP address that is used in the visit external network.
8, method as claimed in claim 7 is characterized in that, steps A is triggered by the service request that described UE sends by non-3GPP technology.
9, method as claimed in claim 7 is characterized in that, in the steps A, the process that non 3GPP Anchor sets up described transmission tunnel is:
Non 3GPP Anchor by with the communication interaction of non 3GPP IP Access Network, set up the IPsec tunnel between non3GPP Anchor and the UE; And the transmission tunnel of this IPsec tunnel that will set up when carrying out subsequent data transmission as UE and non3GPP Anchor.
10, method as claimed in claim 7 is characterized in that, in the steps A, described foundation supports the process in the transmission tunnel of the external network communication that UE is connected with Inter AS Anchor to be:
Non 3GPP Anchor by with the communication interaction of Inter AS Anchor, set up the GTP tunnel between non 3GPP Anchor and the Inter AS Anchor; And the transmission tunnel of this GTP tunnel that will set up when carrying out subsequent data transmission as UE and external network.
11, method as claimed in claim 7 is characterized in that, in the steps A, the process that non 3GPP Anchor sets up described transmission tunnel is:
Non 3GPP Anchor by with the communication interaction of non 3GPP IP Access Network, set up the IPsec tunnel between non3GPP Anchor and the UE; And the transmission tunnel of this IPsec tunnel that will set up when carrying out subsequent data transmission as UE and non3GPP Anchor;
Described foundation supports the process in the transmission tunnel of the external network communication that UE is connected with Inter AS Anchor to be:
Non 3GPP Anchor by with the communication interaction of Inter AS Anchor, set up the GTP tunnel between non 3GPP Anchor and the Inter AS Anchor; And the transmission tunnel of this GTP tunnel that will set up when carrying out subsequent data transmission as UE and external network.
12, as each described method of claim 7 to 11, it is characterized in that, among the step B, distribute the process of described IP address to be:
Non 3GPP Anchor is to the access request of Inter AS Anchor transmission at UE; When Inter ASAnchor receives from the access request of non 3GPP Anchor,, and IP address allocated is sent to UE for UE divides the IP address that is used in the visit external network.
13, as each described method of claim 7 to 11, it is characterized in that, before the steps A, further UE is carried out identification authentication, service authorization operation by non 3GPP Anchor.
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