CN101127652A - A method, device and system for identifying access anchor of user terminal to external network - Google Patents
A method, device and system for identifying access anchor of user terminal to external network Download PDFInfo
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Abstract
The utility model discloses a method, a unit and a system for ensuring a user terminal access an anchor point of an external network, wherein, a functional entity for information acquisition ensures the multi-access technical skill type of the user terminal according to the multi-access technical skill information of the user terminal, and sends the information with the multi-access technical skill type to 3GPP Anchor, 3GPP Anchor chooses a user terminal to access an anchor point of an external network according to the information with the multi-access technical skill type. The utility model has the advantages that enabling a proper anchor point to access an external network according to the multiple wireless access technical skill of a user terminal; for the user terminals which only support 3GPP access technology, business data is never processed by SAE Anchor and then routed to an external network, thus decreasing the number of processing nodes for users, reducing time delay, and synchronously mitigating the load of SAE Anchor.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method, Apparatus and system of definite user terminal access external network anchor point.
Background technology
In order to strengthen mobile network's competitiveness, third generation collaborative project (3rd GenerationPartnership Project, 3GPP) studying the network architecture in a kind of future, comprise System Architecture Evolution (System Architecture Evolution, SAE) and the Long Term Evolution of Access Network (Long-termevolution, LTE).Wherein the Access Network of evolution is called E-UTRAN (Evolved UMTS TerritorialRadio Access Network), and the packet core network of evolution is called EPC (Evolved packetcore); The structure of EPC as shown in Figure 1, comprise Mobility Management Entity (Mobility ManagementEntity, MME), user entity (User Plane Entity, UPE), 3GPP Anchor and four logical functional entities of SAE Anchor.MME is responsible for the mobile management of chain of command, comprises user terminal (User Equipment, UE) context and mobile status management, distributing user temporary identity sign, safety function etc.; UPE is responsible for initiating paging for downlink data under the idle condition, and IP bearing parameter and the interior routing iinformation of network etc. are preserved in management; 3GPP Anchor serves as the user's face anchor point that moves between 2G/3G connecting system and LTE connecting system, SAE Anchor serves as the user's face anchor point that moves between 3GPP connecting system and non 3GPP connecting system.Among the figure, GERAN (GSM EDGE Radio Access Network) is the GSMEDGE wireless access network, UTRAN (UMTS Territorial Radio Access Network) is a UMTS Terrestrial radio access network, SGSN (Serving GPRS Support Node) is a Serving GPRS Support Node, HSS (Home Subscriber Server) is a home subscriber server, and PCRF (Policy ControlCharging Rule Function) is policy control and charging rule functions.
In Fig. 1, for only supporting the 3GPP access technology or support 3GPP simultaneously and the user terminal of non-3GPP access technology that EPC makes it visit external network by SAE Anchor again through 3GPP Anchor earlier; For the user terminal of only supporting non-3GPP access technology is directly by SAE Anchor visit external network.Therefore, for the user terminal of only supporting the 3GPP access technology, the processing that business datum need experience two anchor points is routed to external network again, has increased the processing node quantity of user data, the load that has also caused SAEAnchor to handle simultaneously.
Summary of the invention
The invention provides method, Apparatus and system that a kind of definite user terminal connects the external network anchor point, in order to solving in the prior art for the user terminal of only supporting the 3GPP access technology, the processing that business datum need experience two anchor points is routed to the problem of external network again.
In order to solve the problems of the technologies described above, the invention provides a kind of method of definite user terminal access external network anchor point, comprise step:
A, information are obtained functional entity is determined described user terminal according to the multi-access technology ability information of user terminal multi-access technology capability class;
B, information are obtained functional entity described multi-access technology capability class information are sent to 3GPPAnchor;
C, 3GPP Anchor are according to the anchor point of described multi-access technology capability class Information Selection user terminal access external network.
Wherein, between steps A and B, further comprise step:
D, the described multi-access technology capability class information information of being recorded in is obtained in the user terminal context in the functional entity.
Further, described multi-access technology capability class message identification is for only supporting the 3GPP access technology, and the anchor point of described user terminal access external network is 3GPP Anchor, also comprises step:
E, 3GPP Anchor are the address information of described user terminal assigns access external network, and described address information is obtained functional entity by information are handed down to user terminal.
Further, described multi-access technology capability class message identification is for supporting 3GPP access technology and non-3GPP access technology simultaneously, the anchor point of described user terminal access external network is SAE Anchor, adopts the GTP agreement between 3GPPAnchor and the SAE Anchor, also comprises step:
F, 3GPP Anchor send a request message to SAE Anchor, and SAE Anchor is that described user terminal distributes address information, and described address information is obtained functional entity by information are handed down to user terminal.
Further, described multi-access technology capability class message identification is for supporting 3GPP access technology and non-3GPP access technology simultaneously, the anchor point of described user terminal access external network is SAE Anchor, adopts the MIP agreement between 3GPPAnchor and the SAE Anchor, also comprises step:
G, SAE Anchor send the agent advertisement message that comprises address information to 3GPP Anchor, and described address information is obtained functional entity by information and is handed down to user terminal.
Further, described multi-access technology ability information is included in user terminal in the request message that network side sends, and the information of network side is obtained functional entity extracts described user terminal from described request message multi-access technology ability information.
Wherein, described request message is the network attachment request message.
Wherein, described request message is for activating the PDP Context request message.
Further, described multi-access technology ability information be included in HSS to information obtain that functional entity sends contracted user's information in.
Further, described multi-access technology ability information is obtained to the informix that the request message and the HSS of network side transmission provide by user terminal.
Further, described step B is specially:
Information is obtained functional entity and by the PDP Context request message multi-access technology capability class information of described user terminal is sent to 3GPP Anchor.
Further, to obtain functional entity be Mobility Management Entity and/or user entity to described information.
The present invention provides a subscriber equipment that is used for determining user terminal access external network anchor point simultaneously, comprising:
Wireless transmit/receive units and
An output unit, described output unit are used for and will comprise user terminal multi-access technology ability information sends to network side by wireless transmit/receive units core net functional entity.
The present invention also provides a core net functional entity that is used for determining user terminal access external network anchor point, comprising:
Information acquisition unit is used to receive the multi-access technology ability information of user terminal transmission and/or the multi-access technology ability information of the described user terminal that HSS sends;
And the anchor point selected cell, be used for obtaining the anchor point that multi-access technology ability information that functional entity sends is determined described user terminal access external network according to information.
The invention provides a kind of system of definite user terminal access external network anchor point, comprising:
User terminal is provided with:
Wireless transmit/receive units;
Output unit is used for sending to network side core net functional entity with comprising user terminal multi-access technology ability information by wireless transmit/receive units;
The core network function entity is provided with:
Information acquisition unit, be used to receive the multi-access technology ability information of user terminal transmission and/or the multi-access technology ability information of the described user terminal that HSS sends, and determine the multi-access technology capability class of described user terminal according to described multi-access technology ability information;
And the anchor point selected cell, be used for obtaining the anchor point that multi-access technology capability class information that functional entity sends is determined described user terminal access external network according to information;
The information acquisition unit of core net functional entity receives the multi-access technology ability information of user terminal transmission and/or the multi-access technology ability information of the user terminal that HSS sends, and determine the multi-access technology capability class of described user terminal according to described multi-access technology ability information, the anchor point selected cell obtains the anchor point that multi-access technology capability class information that functional entity sends is determined described user terminal access external network according to information.
Further, in the system that determines user terminal access external network anchor point, described support multi-access technology ability information is included in user terminal in the request message that network side sends.
Further, in the system that determines user terminal access external network anchor point, described request message is the network attachment request message.
Further, in the system that determines user terminal access external network anchor point, described request message is for activating the PDP Context request message.
Further, in the system that determines user terminal access external network anchor point, described information acquisition unit is Mobility Management Entity and/or user entity.
Beneficial effect of the present invention is as follows:
For the user terminal of only supporting the 3GPP access technology, business datum no longer is routed to external network again through the processing of SAE Anchor, has reduced the processing node quantity of user data, has reduced time delay, has also alleviated the unnecessary load of SAE Anchor simultaneously.
Description of drawings
Fig. 1 is the packet core network configuration diagram of evolution in the prior art;
Fig. 2 is the packet core network configuration diagram of evolution among the present invention;
Fig. 3 is for selecting the flow chart of the anchor point of visit external network according to the access capability of user terminal among the present invention;
Fig. 4 is the flow chart of first embodiment of the invention;
Fig. 5 is the flow chart of second embodiment of the invention;
Fig. 6 is the flow chart of third embodiment of the invention;
Fig. 7 is the flow chart of fourth embodiment of the invention;
Fig. 8 is the flow chart of fifth embodiment of the invention;
Fig. 9 is the schematic diagram of user terminal among the present invention;
Figure 10 is core net functional entity schematic diagram among the present invention;
Figure 11 is system schematic among the present invention.
Embodiment
The present invention program's thought is: information is obtained functional entity is determined described user terminal according to the multi-access technology ability information of user terminal multi-access technology capability class, and described multi-access technology capability class information sent to 3GPP Ancor, 3GPP Ancor is according to the anchor point of described multi-access technology capability class Information Selection user terminal access external network.
Among the present invention, it is Mobility Management Entity and/or user entity (MME/UPE) that information is obtained functional entity, and Mobility Management Entity and user entity can be separate, and a functional entity also can permeate.Shown in the packet core network configuration diagram 2 of evolution, as can be seen from Figure 2, can directly visit external network or visit external network by SAE Anchor again by 3GPP Anchor for the user terminal of different multi-access technology abilities.
Realize the present invention, (User Equipment, multi-access technology ability UE) (Multi-RAT Capacity) specifically can be described with MRCT (Multi-RAT Capacity Type) at first to need to define user terminal.MRC has described all access technologies that this UE can support, has embodied the ability of UE.All access technologies are divided into two big classes: 3GPP access technology and non-3GPP access technology, UE will be divided into three classes so, be called the multiple access capability class (MRCT) of UE:
Category-A: the UE that only supports the 3GPP access technology;
Category-B: the UE that only supports non-3GPP access technology;
C class: the UE that supports 3GPP and non-3GPP access technology simultaneously.
MRCT has described the multiple access capability class of UE.The MRCT value can be derived by the MRC value and be drawn.MRC value that writes down in UE or MRCT value are designated as MRC (r) or MRCT (r) respectively; (MRC value or the MRCT value of record UE are designated as MRC (s) or MRCT (s) respectively in (or HLR) at HSS.
In the prior art standard, UE can report its classmark parameter when network attachment.The classmark parameter of UE has comprised the existing 3GPP radio access technology capability information that UE can support, and reserves and extension mechanism for following wireless access technology provides.If the classmark parameter is used in expansion, make it support to describe non-3GPP access technology, then can therefrom extract the MRC information of UE, perhaps substitute the MRC parameter with it.
MME above writes down the MRCT (being designated as MRCT (m)) of UE during the UE network attachment the user of UE.The mode of determining of MRCT (m) comprises and is not limited to following several method:
1. UE reports its classmark parameter during network attachment, and MME determines the MRCT (m) of UE in view of the above
2. UE reports its MRC (r) or MRCT (r) or comprises the information of the multiple access ability that can derive UE during network attachment, and MME determines the MRCT (m) of UE in view of the above;
3. obtain MRC (s) or the MRCT (s) of UE from HSS, MME determines the MRCT (m) of UE in view of the above;
4. during network attachment, UE reports its classmark or MRC (r) or comprises the information of the multiple access ability that can derive UE, and the MRC (s) of UE is provided among the HSS simultaneously, and MME comprehensively draws the MRCT (m) of UE;
5. at UE when MME initiates PDP context activation, can carry MRC (r) or MRCT (r) in the request message or comprise the information of the multiple access ability that can derive UE, to upgrade the MRCT (m) among the MME.
On 3GPP Anchor, two kinds of different routed paths of the corresponding visit of pre-configured different address pool sections external network:
The route visit external network of the Gi interface of address pool section 1 corresponding selection 3GPP anchor;
3GPP Anchor is according to MRCT (m) value, for UE selects different routes.System of selection is as follows:
1) as if MRCT (m)=A, 3GPP Anchor visits external network for UE distributes an address in address pool section 1;
2) if MRCT (m)=C looks the interface protocol difference between 3GPP Anchor and the SAE Anchor, processing method is different:
If adopt GTP agreement (GPRS Tunneling Protocol, GPRS Tunnel Protocol), then 3GPPAnchor initiates to set up tunneled requests to SAE Anchor, SAE Anchor is that UE distributes an address to visit external network, and tells 3GPP Anchor with addresses distributed in the message of setting up the tunnel response.
If adopt MIP agreement (Mobile IP, mobile IP), 3GPP Anchor can receive SAEAnchor (XA simultaneously, at home network is HA, at visited network is FA) agent advertisement, thereby obtain the XA address, 3GPP Anchor visits external network for UE distributes an address XoA (at home network is home address HoA, is Care-of Address CoA at visited network) in address pool section 2.If do not write down HoA (Home Address) and HA (Home Agent) address among the UE, perhaps UE support roaming place routing optimality (local breakout) is then with 3GPP Anchor addresses distributed XoA and XA address HoA and the HA as UE.If existing record HoA or HA address and UE do not support local breakout among the UE, then with 3GPP Anchor addresses distributed XoA as CoA (Care-of Address, Care-of Address), initiate registration process to HA then.
Below in conjunction with accompanying drawing 3, flow process of the present invention is done an explanation.
1, UE sends message to the MME/UPE of network side;
Wherein, UE is Attach Request message or activates the PDF context request message to the MME/UPE of network side entity transmission message.
2, MME/UPE carries out subscription authentication to UE, and HSS sends contracted user's information of described UE to MME/UPE;
3, the CAMEL-Subscription-Information that sends of the information that reports by UE of MME/UPE or HSS or boths' is comprehensive, draws MRCT (m), is recorded in the context of UE;
Wherein, the approach that MME/UPE obtains the multi-access technology ability information of user terminal is various, can be by in the approach as described below any:
UE reports, be UE to Attach Request message that the MME/UPE of network side entity sends or activate multi-access technology ability value MRC (r) or the MRCT (r) that comprises user terminal in the PDF context request message, also can be the information that comprises the multiple access ability that can derive user terminal in the described message, the information that can derive the multiple access ability of UE can be device identification of UE etc.;
HSS provides, and promptly HSS comprises the multi-access technology ability value MRC (r) or the MRCT (r) of user terminal in MME/UPE sends contracted user's information of described UE;
UE reports simultaneously that HSS provides, the Attach Request message that sends to the MME/UPE of network side entity in conjunction with UE or activate the PDF context request message and contracted user's informix that to be HSS send from described UE to MME/UPE draws the information of the multiple access ability of UE.
4, MME/UPE sets up the customer service bearing request message to what 3GPP Anchor sent, carries MRCT (m) in the described message;
5,3GPP Anchor selects according to MRCT (m) value: if MRCT (m)=C, choosing is selected visit external network in address through the route of the SGi of SAE Anchor interface to UE; If MRCT (m)=A, the route of selection Gi interface is selected address visit external network to UE;
Wherein, after the anchor point of UE visit external network is decided, also need address information, and described address information is issued to UE for UE assigns access external network.
6, the 3GPP Anchor address notification that will distribute to UE utilizes the anchor point visit external network of described address information by distributing for UE, UE.
For making the present invention more clear complete, the present invention is further set forth below in conjunction with specific embodiment and accompanying drawing.
First embodiment
Determine the flow process of the anchor point of user terminal access external network when present embodiment is the UE network attachment, as shown in Figure 4, adopt the GTP agreement between SAE Anchor and the 3GPP Anchor.In the present embodiment, if UPE and 3GPP Anchor unification, then step 11 and 13 is the inside stories between UPE and the 3GPP Anchor; If MME and UPE unification, step 9 then, 10,14,16th, the inside story between MME and the UPE.Idiographic flow is as follows:
1, UE finds to connect network, sends attach request message to the MME/UPE of network side, may carry the information that the classmark of UE or MRC (r) or MRCT (r) maybe can derive user terminal multi-radio access technology ability in the message;
2, MME/UPE asks for subscriber identity information to UE;
3, safety certification process;
4, device authentication;
5, MME initiates position updating request to HSS;
6, HSS inserts user signing contract information to the MME notice, if HSS has stipulated multi-radio access technology ability (MRC (the s)) authority of UE or multi-radio access technology tenability type (MRCT (the s)) authority of UE, then carries it in message;
7, MME sends to HSS and inserts the user signing contract information acknowledge message, may comprise the multi-access technology ability value MRC (s) or the MRCT (s) that identify UE in described contracted user's information;
8, HSS notice MME position is upgraded and is confirmed;
9, MME determines the MRCT (m) of UE according to adhering to of sending of user terminal multi-access technology ability information that multi-access technology ability information in the message or HSS provide or both combinations, is kept in the UE context of MME.MME confirms to set up the default service carrying, selects a UPE;
10, MME initiates PDP context request to selected UPE, carries MRCT (m) in the message, information such as APN;
11, UPE resolves and obtains 3GPP Anchor address according to information such as APN, sets up user's context, initiates PDP context request to 3GPP Anchor then, carries MRCT (m) in the message, information such as APN;
Wherein, 3GPP anchor is according to MRCT (m), select suitable outer net outlet pathway: if MRCT (MME)=A, the outer net outlet pathway is selected the direct Gi interface of 3GPP anchor, by 3GPP anchor in corresponding address pool section 1 for UE distributes the address, forward 13 to, as if MRCT (MME)=C, the outer net outlet pathway is selected the SGi interface of SAE anchor, turns to 12;
Wherein, after the anchor point of UE visit external network is decided, also need address information, and described address information is issued to UE for UE assigns access external network.
12,3GPP anchor sends to SAE anchor and sets up tunneled requests, and SAE Anchor brings 3GPP anchor to the address that UE selects the visit outer net in PDP context response message;
13,3GPP anchor brings the information such as address that UPE distributes to UE in PDP context response message;
14, UPE carries the information such as address of distributing to UE in giving the PDP context response message of MME;
15, MME initiates RAB (Radio Access Bearer, RAB) and sets up process;
16, MME initiates to upgrade the user's context request to UPE, and UPE upgrades user's context, sends out to MME then and upgrades the user's context response;
17, MME sends to adhere to UE and accepts message, and message is carried the information such as address of distributing to UE;
18, UE responds MME and adheres to and finish, and UE can utilize information such as addresses distributed to visit external network by the anchor point of described distribution.
Second embodiment
Determine the flow process of the anchor point of user terminal access external network when present embodiment is the UE network attachment, as shown in Figure 5, adopt the MIP agreement between SAE Anchor and the 3GPP Anchor.In the present embodiment, if UPE and 3GPP Anchor unification, then step 11 and 13 is the inside stories between UPE and the 3GPP Anchor; If MME and UPE unification, step 9 then, 10,14,16th, the inside story between MME and the UPE.Idiographic flow is:
1, UE finds to connect network, sends attach request message to the MME/UPE of network side, may carry the information that the classmark of UE or MRC (r) or MRCT (r) maybe can derive user terminal multi-radio access technology ability in the message;
2, MME/UPE asks for subscriber identity information to UE;
3, safety certification process;
4, device authentication;
5, MME initiates position updating request to HSS;
6, HSS inserts user signing contract information to the MME notice, if HSS has stipulated many RAT tenability (MRC (s)) authority of UE or many RAT tenability type (MRCT (s)) authority of UE, then carries it in message;
7, MME sends to HSS and inserts the user signing contract information acknowledge message, may comprise the multi-access technology ability value MRC (s) or the MRCT (s) that identify UE in described contracted user's information;
8, HSS notice MME position is upgraded and is confirmed;
9, MME determines the MRCT (m) of UE according to adhering to of sending of user terminal multi-access technology ability information that multi-access technology ability information in the message or HSS provide or both combinations, exists in the UE context of MME.MME confirms to set up the default service carrying, selects a UPE;
10, MME initiates PDP context request to selected UPE, carries MRCT (m) in the message, information such as APN;
11, UPE resolves and obtains 3GPP Anchor address according to information such as APN, sets up user's context, initiates PDP context request to 3GPP Anchor then, carries MRCT (m) in the message, information such as APN;
Wherein, 3GPP anchor selects suitable outer net outlet pathway according to MRCT (m): if MRCT (MME)=A, the outer net outlet pathway is selected the direct Gi interface of 3GPP anchor, by 3GPP anchor in corresponding address pool section 1 for UE distribution address, forward 13 to.If MRCT (MME)=C, 3GPP anchor distributes XoA address (at home network is HoA, is CoA at visited network) in corresponding address pool section 2 for UE.
12,3GPP anchor can receive the agent advertisement message of SAE anchor (XA is HA at home network, is FA at visited network), learns SAE anchor (XA) address, as the XA of UE;
13,3GPP anchor carries information such as the XoA that distributes to UE and XA in giving the PDP context response message of UPE;
14, UPE carries information such as the XoA that distributes to UE and XA in giving the PDP context response message of MME;
15, MME initiates RAB and sets up process;
16, MME initiates to upgrade the user's context request to UPE, and UPE upgrades user's context, and UPE sends out to MME and upgrades the user's context response;
17, MME sends to adhere to UE and accepts message, and message is carried information such as the XoA that distributes to UE and XA;
18, UE compares HA, HoA and XoA, the XA that self stores:
If HA, HoA be invalid, then with XoA, XA as HoA, the HA of UE use;
If XA is different with HA or the identical XoA with HA of XA is different with HoA, then XoA is initiated the MIP registration process as CoA to HA;
19, UE responds MME and adheres to and finish, and UE can utilize information such as addresses distributed to visit external network by the anchor point of described distribution.
The 3rd embodiment
Determine the flow process of the anchor point of user terminal access external network when present embodiment is the UE network attachment, wherein, UE supports roaming place routing optimality (Local breakout), as shown in Figure 6, adopts the MIP agreement between SAE Anchor and the 3GPP Anchor.In the present embodiment, if UPE and 3GPP Anchor unification, then 11 and 13 is inside stories between UPE and the 3GPP Anchor; If MME and UPE unification, then 9,10,14,16th, the inside story between MME and the UPE.
1, UE finds network, connect, send attach request message to the MME of network side, may carry the classmark of UE or MRC (r) or MRCT (r) in the message and maybe can derive the information of user terminal multi-radio access technology ability, if UE storage HA or HoA information are then carried it adhering to message;
2, MME/UPE asks for subscriber identity information to UE;
3, safety certification process;
4, device authentication;
5, MME initiates position updating request to HSS;
6, HSS inserts user signing contract information to the MME notice, if HSS has stipulated many RAT tenability (MRC (s)) authority of UE or many RAT tenability type (MRCT (s)) authority of UE, the HA of UE or HoA information, whether UE supports roaming place routing optimality (local breakout) sign, then carries them in message;
7, MME sends to HSS and inserts the user signing contract information acknowledge message;
8, HSS notice MME position is upgraded and is confirmed;
9, MME determines the MRCT (m) of UE according to adhering to of sending of user terminal multi-access technology ability information that multi-access technology ability information in the message or HSS provide or both combinations, exists in the UE context of MME.MME confirms to set up the default service carrying, selects a UPE;
10, MME initiates PDP context request to selected UPE, carries MRCT (m) in the message, information such as APN;
11, UPE resolves and obtains 3GPP Anchor address according to information such as APN, sets up user's context, initiates PDP context request to 3GPP Anchor then, carries MRCT (m) in the message, information such as APN;
Wherein, 3GPP anchor selects suitable outer net outlet pathway according to MRCT (m): if MRCT (MME)=A, the outer net outlet pathway is selected the direct Gi interface of 3GPP anchor, by 3GPP anchor in corresponding address pool section 1 for UE distribution address, forward 13 to.If MRCT (MME)=C, 3GPP anchor distributes XoA address (at home network is HoA, is CoA at visited network) in corresponding address pool section 2 for UE.
12,3GPP anchor can receive the agent advertisement message of SAE anchor (XA is HA at home network, is FA at visited network), learns SAE anchor (XA) address, as the XA of UE;
13,3GPP anchor carries information such as the XoA that distributes to UE and XA in giving the PDP context response message of UPE;
14, UPE carries information such as the XoA that distributes to UE and XA in giving the PDP context response message of MME;
15, MME initiates RAB and sets up process;
16, MME initiates to upgrade the user's context request to UPE, and UPE upgrades user's context, and UPE sends out to MME and upgrades the user's context response;
17, if UE roaming place routing optimality (local breakout) sign shows that UE supports the roaming place routing optimality, then with the XoA of 3GPP Anchor selection and HoA and the HA of XA as UE.Otherwise compare XoA and HoA, if different, then with the CoA of XoA as UE.MME sends to adhere to UE and accepts message, and message is carried the HoA that distributes to UE, HA, information such as CoA;
18, UE upgrades the HoA of self, HA, and information such as CoA if CoA is a rational Care-of Address, are then initiated the MIP registration process to HA;
19, UE responds MME and adheres to and finish, and UE can utilize information such as addresses distributed to visit external network by the anchor point of described distribution.
The 4th embodiment
Present embodiment be UE initiate PDP context activation the time determine the flow process of the anchor point of user terminal access external network, as shown in Figure 7.In the present embodiment, be separated into example explanation entirely with MME, UPE, 3GPP Anchor, wherein MME and UPE can unify, step 2 then, and 6,7,8 are inside story, step 3 and 5 is inside story after UPE and the 3GPP Anchor unification.3GPP Anchor and SAE Anchor adopt the MIP agreement.Idiographic flow is as follows:
1, UE initiate to activate the PDP Context request to MME, if the multiple access ability MRC value of UE changes, and MRC (r) or MRCT (r) value after can in this request message, carrying variation.MME then upgrades MRCT (m) if receive MRC (r) or MRCT (r);
2, MME initiates PDP context request to UPE, carries MRCT (m) in the message, information such as APN;
3, UPE resolves and obtains 3GPP Anchor address according to information such as APN, sets up user's context, initiates PDP context request to 3GPP Anchor then, carries MRCT (m) in the message, information such as APN;
Wherein, 3GPP anchor selects suitable outer net outlet pathway according to MRCT (m): if MRCT (MME)=A, the outer net outlet pathway is selected the direct Gi interface of 3GPP anchor, by 3GPP anchor in corresponding address pool section 1 for UE distribution address, forward 5 to.If MRCT (MME)=C, 3GPP anchor distributes XoA address (at home network is HoA, is CoA at visited network) in corresponding address pool section 2 for UE.
4,3GPP anchor can receive the agent advertisement message of SAE anchor (HA) simultaneously, learns SAEanchor (XA is HA at home network, is FA at visited network) address, as the XA of UE.
5,3GPP anchor carries information such as the XoA that distributes to UE and XA in giving the PDP context response message of UPE;
6, UPE carries information such as the XoA that distributes to UE and XA in giving the PDP context response message of MME;
7, MME initiates RAB and sets up process;
8, MME initiates to upgrade the user's context request to UPE, and UPE upgrades user's context, and UPE sends out to MME and upgrades the user's context response;
9, MME sends to UE and activates PDP Context and accept message, and message is carried information such as the XoA that distributes to UE and XA;
10, UE compares HA, HoA and XoA, the XA that self stores:
If HA, HoA be invalid, then with XoA, XA as HA, the HoA of UE use;
If XA is different with HA or XA is identical with HA, XoA is different with HoA, then with XoA as CoA, initiate the MIP registration process to HA; UE can utilize the anchor point visit external network of information such as addresses distributed by described distribution.
The 5th embodiment
Present embodiment be UE initiate PDP context activation the time determine the flow process of the anchor point of user terminal access external network, as shown in Figure 8.In the present embodiment, be separated into example explanation entirely with MME, UPE, 3GPP Anchor, wherein MME and UPE can unify, step 2 then, and 6,7,8 are inside story, step 3 and 5 is inside story after UPE and the 3GPP Anchor unification.3GPP Anchor and SAE Anchor adopt the GTP agreement.Idiographic flow is as follows:
1, UE initiate to activate the PDP Context request to MME, if the multiple access ability MRC value of UE changes, and MRC (r) or MRCT (r) value after can in this request message, carrying variation.MME then upgrades MRCT (m) if receive MRC (r) or MRCT (r);
2, MME initiates PDP context request to UPE, carries MRCT (m) in the message, information such as APN;
3, UPE resolves and obtains 3GPP Anchor address according to information such as APN, sets up user's context, initiates PDP context request to 3GPP Anchor then, carries MRCT (m) in the message, information such as APN;
Wherein, 3GPP anchor selects suitable outer net outlet pathway according to MRCT (m): if MRCT (MME)=A, the outer net outlet pathway is selected the direct Gi interface of 3GPP anchor, by 3GPP anchor in corresponding address pool section 1 for UE distribution address, forward 6 to.If MRCT (MME)=C, the outer net outlet pathway is selected the SGi interface of SAE anchor, turns to 5.
4,3GPP anchor sends to SAE anchor and sets up tunneled requests, and SAE Anchor selects the outer net address of visit to UE, brings 3GPP anchor in PDP context response message;
5,3GPP anchor brings the information such as address that UPE distributes to UE in PDP context response message;
6, UPE carries the information such as address of distributing to UE in giving the PDP context response message of MME;
7, MME initiates RAB and sets up process;
8, MME initiates to upgrade the user's context request to UPE, and UPE upgrades user's context, and UPE sends out to MME and upgrades the user's context response;
9, MME sends to UE and activates PDP Context and accept message, and message is carried the information such as address of distributing to UE, and UE can utilize information such as addresses distributed to visit external network by the anchor point of described distribution.
The present invention also provides a kind of definite user terminal to connect subscriber equipment, core net functional entity and the system of external network anchor point.
A subscriber equipment that is used for determining user terminal access external network anchor point as shown in Figure 9, comprising:
Wireless transmit/receive units 91 and
An output unit 92, described output unit 92 are used for and will comprise user terminal multi-access technology ability information sends to network side by wireless transmit/receive units 91 core net functional entity.Wherein, described multi-access technology ability information is included in user terminal in network attachment request message or activation PDP Context request message that network side sends.
A core net functional entity that is used for determining user terminal access external network anchor point as shown in figure 10, comprising:
And anchor point selected cell 102, be used for determining the anchor point of described user terminal access external network according to the multi-access technology ability information that information acquisition unit 101 sends.
A kind of system of definite user terminal access external network anchor point as shown in figure 11, comprising:
Wireless transmit/receive units 1101;
Core net functional entity 1110 is provided with:
Wherein, the approach that information is obtained the multi-access technology ability information of functional entity 1111 acquisition user terminals 1100 is various, can be as described below any: user terminal 1100 reports, the Attach Request message that to be user terminal 1100 send to the information acquisition unit 11111 of network side or activate multi-access technology ability value MRC (r) or the MRCT (r) that comprises user terminal 1100 in the PDF context request message also can be the information that comprises the multiple access ability that can derive user terminal 1100 in the described message; HSS provides, and promptly HSS comprises the multi-access technology ability value MRC (r) or the MRCT (r) of user terminal 1100 in contracted user's information of the described user terminal 1100 of information acquisition unit 1111 transmissions; User terminal 1100 reports simultaneously that HSS provides, the Attach Request message that sends to the information acquisition unit 1111 of network side in conjunction with user terminal 1100 or activate the PDF context request message and contracted user's informix that to be HSS send from described user terminal 1100 to MME/UPE draws the information of the multiple access ability of user terminal 1100.
And anchor point selected cell 1112, be used for obtaining the anchor point that multi-access technology capability class information that functional entity 1111 sends is determined described user terminal 1100 visit external networks according to information;
The information acquisition unit 1111 of core net functional entity 1110 receives the multi-access technology ability information of user terminal 1100 transmissions and/or the multi-access technology ability information of the user terminal 1100 that HSS sends, and determine the multi-access technology capability class of described user terminal 1100 according to described multi-access technology ability information, anchor point selected cell 1112 obtains the anchor point that multi-access technology capability class information that functional entity 1111 sends is determined described user terminal 1100 visit external networks according to information.
Wherein, described support multi-access technology ability information is included in user terminal 1100 in network attachment request message or activation PDF context request message that network side sends; Described information acquisition unit 1111 is Mobility Management Entity and/or user entity; Described anchor point selected cell 1112 is 3GPP Anchor.Described core net functional entity is included in the packet-based core networks of evolution, as shown in Figure 2.
When the multi-access technology capability class of user terminal 1100 for only supporting the 3GPP connecting system, anchor point selected cell 1112 is 3GPP Anchor for the anchor point of described user terminal 1100 assigns access external networks, promptly the anchor point selected cell 1112; 3GPP Anchor is that described user terminal 1100 distributes addresses, and described address information is obtained functional entity 1111 by information is handed down to described user terminal 1100, and user terminal 1100 utilizes the anchor point visit external network of described address information by distributing.
When the multi-access technology capability class of user terminal 1100 for supporting 3GPP connecting system and non-3GPP connecting system simultaneously, anchor point selected cell 1112 is SAE Anchor for the anchor point of described user terminal 1100 assigns access external networks.According to the interface protocol difference between 3GPP Anchor and the SAE Anchor, different for the method for user terminal 1100 assigns access outside network address, be specially:
If adopt GTP agreement (GPRS Tunneling Protocol, GPRS Tunnel Protocol), then 3GPPAnchor initiates to set up tunneled requests to SAE Anchor, SAE Anchor is that user terminal 1100 distributes an address to visit external network, and in the message of setting up the tunnel response, tell 3GPP Anchor with addresses distributed, by 3GPP Anchor described address information is handed down to described user terminal 1100 by information acquisition unit.
If adopt MIP agreement (Mobile IP, mobile IP), 3GPP Anchor can receive SAEAnchor (XA simultaneously, at home network is HA, at visited network is FA) agent advertisement, thereby obtain the XA address, 3GPP Anchor visits external network for user terminal 1100 distributes an address XoA (at home network is home address HoA, is Care-of Address CoA at visited network) in address pool section 2.If do not write down HoA (Home Address) and HA (Home Agent) address in the user terminal 1100, perhaps user terminal 1100 is supported roaming place routing optimalities (local breakout), then with 3GPP Anchor addresses distributed XoA and XA address HoA and the HA as user terminal 1100.If existing record HoA or HA address and user terminal 1100 are not supported local breakout in the user terminal 1100, then with 3GPPAnchor addresses distributed XoA as CoA (Care-of Address, Care-of Address).User terminal 1100 utilizes the anchor point visit external network of information such as addresses distributed by described distribution.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (19)
1. the method for a definite user terminal access external network anchor point is characterized in that, comprises step:
A, information are obtained functional entity is determined described user terminal according to the multi-access technology ability information of user terminal multi-access technology capability class;
B, information are obtained functional entity described multi-access technology capability class information are sent to 3GPP Anchor;
C, 3GPP Anchor are according to the anchor point of described multi-access technology capability class Information Selection user terminal access external network.
2. the method for definite user terminal access external network anchor point as claimed in claim 1 is characterized in that, further comprises step between steps A and B:
D, the described multi-access technology capability class information information of being recorded in is obtained in the user terminal context in the functional entity.
3. the method for definite user terminal access external network anchor point as claimed in claim 2, it is characterized in that, described multi-access technology capability class message identification is for only supporting the 3GPP access technology, and the anchor point of described user terminal access external network is 3GPP Anchor, also comprises step:
E, 3GPP Anchor are the address information of described user terminal assigns access external network, and described address information is obtained functional entity by information are handed down to user terminal.
4. the method for definite user terminal access external network anchor point as claimed in claim 2, it is characterized in that, described multi-access technology capability class message identification is for supporting 3GPP access technology and non-3GPP access technology simultaneously, the anchor point of described user terminal access external network is SAE Anchor, adopt the GTP agreement between 3GPP Anchor and the SAE Anchor, also comprise step:
F, 3GPP Anchor send a request message to SAE Anchor, and SAE Anchor is that described user terminal distributes address information, and described address information is obtained functional entity by information are handed down to user terminal.
5. the method for definite user terminal access external network anchor point as claimed in claim 2, it is characterized in that, described multi-access technology capability class message identification is for supporting 3GPP access technology and non-3GPP access technology simultaneously, the anchor point of described user terminal access external network is SAE Anchor, adopt the MIP agreement between 3GPP Anchor and the SAE Anchor, also comprise step:
G, SAE Anchor send the agent advertisement message that comprises address information to 3GPP Anchor, and described address information is obtained functional entity by information and is handed down to user terminal.
6. as the method for the arbitrary described definite user terminal access external network anchor point of claim 1 to 5, it is characterized in that, described multi-access technology ability information is included in user terminal in the request message that network side sends, and the information of network side is obtained functional entity extracts described user terminal from described request message multi-access technology ability information.
7. the method for definite user terminal access external network anchor point as claimed in claim 6 is characterized in that, described request message is the network attachment request message.
8. the method for definite user terminal access external network anchor point as claimed in claim 6 is characterized in that, described request message is for activating the PDP Context request message.
9. as the method for the arbitrary described definite user terminal access external network anchor point of claim 1 to 5, it is characterized in that, described multi-access technology ability information be included in HSS to information obtain that functional entity sends contracted user's information in.
10. as the method for the arbitrary described definite user terminal access external network anchor point of claim 1 to 5, it is characterized in that described multi-access technology ability information is obtained to the informix that the request message and the HSS of network side transmission provide by user terminal.
11. the method as the arbitrary described definite user terminal access external network anchor point of claim 1 to 5 is characterized in that, described step B is specially:
Information is obtained functional entity and by the PDP Context request message multi-access technology capability class information of described user terminal is sent to 3GPP Anchor.
12. the method as the arbitrary described definite user terminal access external network anchor point of claim 1 to 5 is characterized in that, it is Mobility Management Entity and/or user entity that described information is obtained functional entity.
13. a subscriber equipment that is used for determining user terminal access external network anchor point is characterized in that, comprising:
Wireless transmit/receive units and
An output unit, described output unit are used for and will comprise user terminal multi-access technology ability information sends to network side by wireless transmit/receive units core net functional entity.
14. a core net functional entity that is used for determining user terminal access external network anchor point is characterized in that, comprising:
Information acquisition unit is used to receive the multi-access technology ability information of user terminal transmission and/or the multi-access technology ability information of the described user terminal that HSS sends;
And the anchor point selected cell, be used for obtaining the anchor point that multi-access technology ability information that functional entity sends is determined described user terminal access external network according to information.
15. the system of a definite user terminal access external network anchor point is characterized in that, comprising:
User terminal is provided with:
Wireless transmit/receive units;
Output unit is used for sending to network side core net functional entity with comprising user terminal multi-access technology ability information by wireless transmit/receive units;
The core network function entity is provided with:
Information acquisition unit, be used to receive the multi-access technology ability information of user terminal transmission and/or the multi-access technology ability information of the described user terminal that HSS sends, and determine the multi-access technology capability class of described user terminal according to described multi-access technology ability information;
And the anchor point selected cell, be used for obtaining the anchor point that multi-access technology capability class information that functional entity sends is determined described user terminal access external network according to information;
The information acquisition unit of core net functional entity receives the multi-access technology ability information of user terminal transmission and/or the multi-access technology ability information of the user terminal that HSS sends, and determine the multi-access technology capability class of described user terminal according to described multi-access technology ability information, the anchor point selected cell obtains the anchor point that multi-access technology capability class information that functional entity sends is determined described user terminal access external network according to information.
16. definite user terminal as claimed in claim 15 connects the system of external network anchor point, it is characterized in that, described support multi-access technology ability information is included in user terminal in the request message that network side sends.
17. definite user terminal as claimed in claim 16 connects the system of external network anchor point, it is characterized in that described request message is the network attachment request message.
18. definite user terminal as claimed in claim 16 connects the system of external network anchor point, it is characterized in that, described request message is for activating the PDP Context request message.
19. the system as the arbitrary described definite user terminal connection external network anchor point of claim 15 to 18 is characterized in that described information acquisition unit is Mobility Management Entity and/or user entity.
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