CN102045811A - Access network information acquisition method, access network finding and selecting functional unit and terminal - Google Patents
Access network information acquisition method, access network finding and selecting functional unit and terminal Download PDFInfo
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- CN102045811A CN102045811A CN200910179815XA CN200910179815A CN102045811A CN 102045811 A CN102045811 A CN 102045811A CN 200910179815X A CN200910179815X A CN 200910179815XA CN 200910179815 A CN200910179815 A CN 200910179815A CN 102045811 A CN102045811 A CN 102045811A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
Abstract
The invention discloses an access network information acquisition method, an access network fining and selecting functional unit and a terminal. The method comprises the following steps: the access network discovery and selection function (ANDSF) unit acquires attribute information of an access network supplied to the terminal from an authentication, authorization and accounting (AAA) server after receiving an access network request message from the terminal; and the ANDSF unit transmits information of access network to the terminal to be convenient for the terminal to select an access network to be accessed from access networks corresponding to the information of access network according to the information of access network, wherein the information of access network carries the attribute information of access network. The invention improves terminal switching efficiency and ensures service continuity.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of Access Network information getting method, access network discovery and selection function unit and terminal.
Background technology
Third generation partner program (3rd Generation Partnership Project, abbreviate 3GPP as) grouping system (the Evolved Packet System of evolution, abbreviate EPS as) by universal mobile telecommunications system land radio access web (the Evolved Universal Terrestrial Radio Access Network of evolution, abbreviate E-UTRAN as), mobile management unit (Mobility Management Entity, abbreviate MME as), gateway (Serving Gateway, abbreviate S-GW as), grouped data network gateway (Packet Data Network Gateway, abbreviate P-GW or PDN GW as), home subscriber server (Home Subscriber Server, abbreviate HSS as), "Policy and Charging Rules Function entity (Policy and Charging Rules Function abbreviates PCRF as) and other support nodes are formed.
Fig. 1 is according to the EPS system of correlation technique and the schematic diagram of Access Network framework, as shown in Figure 1, the EPS system supports the intercommunication with non-3 GPP system, wherein, realize that by the S2a/b/c interface anchor point between 3GPP and non-3 GPP system is P-GW with the intercommunication of non-3 GPP system.Non-3 GPP system is divided into the non-3GPP IP access of trusted and trustless non-3GPP IP inserts.The non-3GPP IP of trusted inserts and can directly be connected with P-GW by the S2a interface, and it supports proxy-mobile IP (Proxy Mobile IP abbreviates PMIP as) agreement and mobile IPv 4 (MIPv4) agreement.Trustless non-3GPP IP inserts the packet data gateway (Evolved Packet Data Gateway abbreviates ePDG as) that needs through evolution and links to each other with P-GW, and the interface between ePDG and P-GW is S2b, and it supports the PMIP agreement.S2c provides UE and user's face relevant control and mobility support between the P-GW, the mobility management protocol of its support is for supporting the mobile IP v 6 (Moblie IPv6Support for Dual Stack Hosts and Routers abbreviates DSMIPv6 as) of two stacks.
As shown in Figure 1, MME is responsible for the related work of chains of command such as the processing of mobile management, Non-Access Stratum signaling and the contextual management of user's mobile management; S-GW is the accessing gateway equipment that links to each other with E-UTRAN, transmits data between E-UTRAN and P-GW, and is responsible for pending datas such as paging are carried out buffer memory; P-GW then is the borde gateway of EPS and packet data network (Packet Data Network abbreviates PDN as), and the access of being responsible for PDN reaches functions such as transmitting data between EPS and PDN; PCRF is the "Policy and Charging Rules Function entity, it is by receiving interface Rx and carrier network agreement (Internet Protocol, abbreviating IP as) business network links to each other, obtain business information, in addition, it links to each other with gateway device in the network by the Gx/Gxa/Gxc interface, be responsible for initiating the foundation of IP carrying, guarantee the service quality (Quality of Service abbreviates QoS as) of business datum, and the control of chargeing.
Access network discovery and selection function unit Access Network Discovery and Selection Function abbreviate ANDSF as) be to propose in the core net (Evoleved Package Core abbreviates EPC as) at the evolution system of Rel-8.As subscriber equipment (User Equipment, abbreviate UE as) or terminal in home network or in home network of equal value registration, if have 3GPP and non-3 GPP access network simultaneously or have a plurality of non-3 GPP access networks simultaneously, EPS can offer the Access Network information that its current position of UE can be used by ANDSF, so that UE can select suitable Access Network according to s own situation.Fig. 2 is the schematic diagram according to the use of ANDSF in the correlation technique, and as shown in Figure 2, ANDSF directly links to each other with UE by the S14 interface.This interface uses OMA DM agreement.
Fig. 4 is the flow chart according to the work of the ANDSF of correlation technique, and as shown in Figure 4, this flow process comprises the steps:
Step 401:UE is linked into the EPC system by 3GPP Access Network or non-3 GPP access network.
Step 402:UE finds ANDSF.
Step 403:UE sends access network request message to ANDSF, wherein, carries UE ability information (UE Capabilities), UE positional information (UE Location) in this request message.
The positional information that step 404:ANDSF reports according to UE, send the access network request response message to UE, carry access network information (Available Access Network Info) that this UE current location can use and up-to-date system's shift strategy (Updated Inter-system Mobility Policies) in this response message.
Step 405:UE carries out network selecting and switches decision.
Step 406:UE switches according between self needs initiation system.
According to prior art, the IP mobile management selects (IP Mobility management Selection is called for short IPMS) mainly to be based on UE ability and network capabilities decision IP protocol type.That mainly select is S2a in the EPC system, S2b, and the S2c interface protocol, irrelevant with the GTP/PMIP selection in the S5/S8 interface.Fig. 3 is the use schematic diagram according to the IPMS of correlation technique, and as shown in Figure 3, subscriber equipment is undertaken alternately by gateway and HSS/AAA, and wherein, gateway may be grouped data network gateway, also may be gateway, looks different scenes and decides.Subscriber equipment sends its network capabilities to HSS/AAA when the authentication, network also sends its ability to home subscriber server (Home Subscriber Server, abbreviate HSS as)/authentication authorized charging server (Authentication, Authorization and Accounting abbreviate AAA as).By HSS/AAA decision IP protocol type.Then its negotiation result is returned to gateway, initiate IP by respective gateway and connect.Therefore, IPMS is based on the ability of UE and the ability decision protocol type of network, and Fig. 5 is that as shown in Figure 5, this flow process comprises the steps: according to the flow chart of UE IPMS decision when non-3GPP connecting system switches of correlation technique
Step 501, terminal inserts EPS by the 3GPP connecting system.
Step 502, terminal is visited ANDSF, obtains the configuration information of Access Network, for example, the Access Network tabulation that can insert etc.
Step 503, terminal be because certain reason, for example, the wireless signal strength problem, needs etc. based on the user, initiates to switch to non-3GPP.
Step 504, terminal need to select the non-3 GPP access network of access based on the Access Network configuration information.
Step 505 is carried out access authentication.
Step 506, IPMS decision access protocol type.
Step 507 judges whether network protocol type and UE protocol type mate, if do not match then execution in step 508a, if mate then execution in step 508.
Step 508a, service disconnection is switched and is not finished.
Step 508 is carried out the switching flow subsequent step.
Step 509 is switched to finish and is interrupted inserting EPS by non-3GPP connecting system.
If but UE only supports the DSMIP agreement, and network is not supported the DSMIP agreement.What IPMS decision was at this moment selected is the PMIP agreement, but PMIP protocol requirement UE has IP address reserve capability, and this UE does not have IP address reserve capability, thereby causes professional connectivity to interrupt.And when authentication is carried out in switching, do not report any ability as UE, and what the IPMS decision was selected is the PMIP agreement, whether UE had IP address reserve capability and will determine UE whether can set up PDN with network to be connected this moment.In addition, if UE supports the DSMIP agreement, but Access Network is not supported the PMIP agreement, can cause business continuance interruption when switching yet.At present in the EPC system, there is not an independent network element in IPMS, is located at one but close with AAA.
According to prior art, terminal can insert the EPS system by non-3 GPP access network, but not the 3GPP Access Network is divided into the 3GPP Access Network and the fly-by-night non-3 GPP access network of trust.Whether this non-3 GPP access network trusts the ownership EPS network of terminal, and whether the operator that depends primarily on two networks reaches signatory agreement.Terminal is when inserting non-3 GPP access network trusty, can directly initiate to adhere to request, be access authentication of user then, setting up PDN subsequently connects, finish and adhere to figure, Fig. 6 switches to non-3GPP connecting system according to UE in the correlation technique to trust the flow chart of selecting, and as shown in Figure 6, this flow process comprises the steps:
Step 601, terminal inserts EPS by the 3GPP connecting system.
Step 602, terminal need be initiated to switch because of certain reason, for example, the strength problem of wireless signal.
Step 603, terminal visit ANDSF obtains the Access Network list that can insert, and selects an Access Network to initiate to switch and adhere to.
Step 604 is carried out access authentication.
Step 605 is judged whether trusted of Access Network, and is execution in step 606 under the situation that is in judged result, judged result for situation not under execution in step 606a to step 606c.
Step 606, normal authorizing procedure is finished.
Step 606a, terminal initiates to seek the operation of ePDG.
Step 606b, terminal and ePDG set up the Ipsec tunnel, and finish access authentication of user.
Step 606c, normal authorizing procedure is finished.
Step 607, the switching flow subsequent step.
Step 608, switching is finished, and terminal inserts EPS by non-3GPP connecting system.
But, if terminal has selected a fly-by-night non-3 GPP access network to insert, terminal does not know whether this Access Network is trusty in fact, it can arrive first and carry out access authentication in this Access Network so, in access authentication procedure, network side informs that the current Access Network of terminal is fly-by-night, and UE initiates to insert according to the access way of fly-by-night Access Network again from this access network selection ePDG then; So just because terminal can not be known the trust information of Access Network, the process that exists " test " to insert is disadvantageous to switching efficiency and business continuance.
Therefore, if UE before switching, is known whether believable information of the protocol type of non-3 GPP access network and Access Network in advance, the switching decision of terminal had very important directive significance.
Summary of the invention
Before switching, can't obtain the attribute information of Access Network at UE in the correlation technique and cause influencing the problem of terminal switching efficiency and business continuance and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of scheme of obtaining of Access Network information, to address the above problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of Access Network information getting method.
Access Network information getting method according to the present invention comprises: access network discovery and selection function unit ANDSF obtain the attribute information of the Access Network that provides to terminal from authentication authorized charging server AAA after receiving the access network request message of self terminal; ANDSF sends to terminal with the information of Access Network, so that terminal is selected the Access Network that inserts according to the information of Access Network from the Access Network of the information correspondence of Access Network, wherein, carries the attribute information of Access Network in the information of Access Network.
Preferably, ANDSF sends to terminal with the information of Access Network and comprises: the information of all Access Networks that ANDSF will provide to terminal sends to terminal; After ANDSF will send to terminal to the information of all Access Networks that terminal provides, method also comprises: terminal is selected the Access Network that inserts from the Access Network of the information correspondence of all Access Networks according to the information of the ability of terminal and Access Network, wherein, the ability of terminal comprises one of following at least: whether the protocol type of terminal support, terminal need to insert the Access Network of trust.
Preferably, ANDSF sends to terminal with the information of Access Network and comprises: ANDSF selects one or more Access Networks according to the first information from the Access Network of the information correspondence of Access Network, and the information of the one or more Access Networks that will select sends to terminal, wherein, the first information comprises one of following at least: the protocol type that terminal is supported, the attribute information of Access Network.
Preferably, ANSDF selected one or more Access Networks from the Access Network of the information correspondence of Access Network before, said method also comprised: terminal sends the message of the protocol type that carries the terminal support to ANDSF; ANDSF obtains the protocol type that terminal is supported from message.
Preferably, get access at ANDSF under the prerequisite of the protocol type that terminal supports, ANDSF selects one or more Access Networks according to the protocol type of terminal support or according to the protocol type of terminal support and the attribute information of Access Network from the Access Network of the information correspondence of Access Network.
Preferably, do not get access at ANDSF under the prerequisite of the protocol type that terminal supports, ANDSF selects one or more Access Networks according to the attribute information of Access Network from the Access Network of the information correspondence of Access Network.
Preferably, the attribute information of Access Network comprises one of following at least: the protocol type that Access Network is supported, the trusting relationship of Access Network.
To achieve these goals, according to a further aspect in the invention, a kind of access network discovery and selection function unit are provided.
Comprise according to access network discovery of the present invention and selection function unit: receiver module is used to receive the access network request message of self terminal; First acquisition module is used for obtaining from AAA the attribute information of the Access Network that provides to terminal; Sending module is used for the information of Access Network is sent to terminal, wherein, carries the attribute information of this Access Network in the information of Access Network.
Preferably, above-mentioned access network discovery and selection function unit also comprise: select module, be used for one of at least selecting one or more Access Networks from the Access Network of the information correspondence of Access Network according to following: the protocol type that terminal is supported, the attribute information of Access Network; Second acquisition module is used for obtaining the protocol type that terminal is supported from terminal.
To achieve these goals, according to a further aspect in the invention, also provide a kind of terminal.
Terminal according to the present invention comprises: first sending module is used for sending access network request message to access network discovery and selection function unit ANDSF; Receiver module is used to receive the information from the Access Network of ANDSF, and wherein, the information of Access Network comprises the attribute information of this Access Network; Second selects module, is used for receiving to such an extent that the information of Access Network is selected the Access Network that inserts from the Access Network of the information correspondence of Access Network according to receiver module.
Preferably, above-mentioned terminal also comprises: second sending module is used for sending the protocol type that this terminal is supported to ANDSF.
By the present invention, adopt ANDSF to obtain the attribute information of Access Network and offer terminal from AAA, solved that UE in the correlation technique can't obtain the attribute information of Access Network before switching and the problem that causes influencing terminal switching efficiency and business continuance, and then improved the switching efficiency of terminal and guaranteed professional continuity.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is according to the EPS system of correlation technique and the schematic diagram of Access Network framework;
Fig. 2 is the schematic diagram according to the use of the ANDSF of correlation technique;
Fig. 3 is the use schematic diagram according to the IPMS of correlation technique;
Fig. 4 is the flow chart according to the work of the ANDSF of correlation technique;
Fig. 5 is the flow chart according to UE IPMS decision when non-3GPP connecting system switches of correlation technique;
Fig. 6 switches to non-3GPP connecting system according to UE in the correlation technique to trust the flow chart of selecting;
Fig. 7 is the flow chart according to the acquisition methods of the Access Network information of the embodiment of the invention;
Fig. 8 is the flow chart according to the example one of the embodiment of the invention;
Fig. 9 is the flow chart according to the example two of the embodiment of the invention;
Figure 10 is the structured flowchart according to the ANDSF of the embodiment of the invention;
Figure 11 is the structured flowchart concrete according to the ANSDF of the embodiment of the invention;
Figure 12 is the structured flowchart according to the terminal of the embodiment of the invention;
Figure 13 is the structured flowchart concrete according to the terminal of the embodiment of the invention.
Embodiment
Functional overview
The embodiment of the invention provides a kind of scheme of obtaining of Access Network information, in this scheme, terminal is asked network discovery and selection information (promptly to ANDSF, access network request message), ANDSF is based on the attribute of the Access Network situation on the current location of terminal to aaa server inquiry Access Network, for example, the Access Network supported protocol reaches the information of whether trusting.Particularly, the treatment principle of this scheme is as follows: access network discovery and selection function unit ANDSF obtain the attribute information of the Access Network that provides to terminal from authentication authorized charging server after receiving the access network request message of self terminal; ANDSF sends to terminal with the information of one or more Access Networks in the Access Network, so that terminal is selected the Access Network that inserts according to information from one or more Access Networks, wherein, carries the attribute information of one or more Access Networks in the information.
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
In following examples, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
Method embodiment
According to embodiments of the invention, a kind of acquisition methods of Access Network information is provided, Fig. 7 is the flow chart according to the acquisition methods of the Access Network information of the embodiment of the invention, as shown in Figure 7, this method comprises that following step S702 is to step S706:
Step S702, ANDSF obtain the attribute information of the Access Network that provides to this terminal from AAA after receiving the access network request message of self terminal.
Step S704, ANDSF carry the attribute information of the Access Network that gets access to from AAA in the information of Access Network is preserved in this locality, and will comprise that the information of the Access Network of attribute information sends to terminal.
Step S706, the Information Selection Access Network of the Access Network that the terminal basis receives also inserts.Preferably, the attribute information of Access Network comprises one of following at least: the protocol type that Access Network is supported, the trusting relationship of Access Network.
Preferably, in step S704, ANDSF can select one of at least one or more Access Networks according to following from the Access Network of the information correspondence of Access Network: the protocol type that terminal is supported, the attribute information of Access Network, ANDSF can obtain the protocol type that terminal is supported from terminal, then, the information with one or more Access Networks of selecting sends to terminal.
Preferably, in step S704, ANDSF also can directly issue the information of whole Access Networks of this terminal, is determined by the ability (for example: whether the protocol type of terminal support, terminal need to insert the Access Network of trust) of terminal according to himself.
Get access at ANDSF under the prerequisite of the protocol type that terminal supports, ANDSF can select one or more Access Networks according to the protocol type of terminal support or according to the protocol type of terminal support and the attribute information of Access Network from the Access Network of the information correspondence of Access Network, that is, terminal is carried the protocol type of himself supporting in sending the Access Network request message.The protocol type that ANDSF supports according to terminal according to its Access Network ordering rule, filters out network list and trusting relationship thereof that terminal can insert, sends to terminal by the Access Network request response, switches decision for terminal and selects for use; Perhaps, the protocol type that terminal to report self is supported, ANDSF issues Access Network information according to the protocol type of terminal.
Do not get access at ANDSF under the prerequisite of the protocol type that terminal supports, ANDSF selects one or more Access Networks according to the attribute information of Access Network from the Access Network of the information correspondence of Access Network.Promptly, terminal is not carried the protocol type of himself supporting in sending the Access Network request message, ANDSF sends to terminal with the relation of non-3 GPP access network network and supported protocol and the trusting relationship of Access Network in the Access Network request response, terminal can be switched decision according to the relation of non-3 GPP access network network and supported protocol and the trusting relationship of Access Network voluntarily when switching.
Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.
Example one
This example obtains Access Network information to UE from ANDSF and is illustrated.UE adopts the PULL pattern to carry out the active application to network by S14 interface visit ANDSF in this example, triggers ANDSF and sends the network information to UE.Fig. 8 is the flow chart according to the example one of the embodiment of the invention, and as shown in Figure 8, this flow process comprises the steps:
Step 801:UE is linked into the EPC system by 3GPP Access Network or non-3 GPP access network.
Step 802:UE finds ANDSF.
Step 803:UE sends access network request message to ANDSF.Wherein, carry access network type information (Access Type), UE ability information (UE Capabilities), the UE positional information (UE Location) of UE in this message.Can carry the supported protocol type of UE in the UE ability information.If do not carry the supported protocol type of UE in the UE ability information, skips steps 806 in the then following step, ANDSF does not need to carry out the reorganization of Access Network information according to the UE ability, and the Access Network information of directly will being correlated with is handed down to UE.
Step 804:ANDSF wherein, carries Access Network sign etc. according to the information of the Access Network on the UE current location to the relevant Access Network of aaa server request in this message.
The Access Network information of step 805:AAA server on ANDSF response UE current location wherein, is carried the Access Network sign in this message, and the protocol type of supporting, the trusting relationship of Access Network etc.
Step 806:ANDSF is according to the positional information of UE, protocol type, the tabulation of information relationship reorganization Access Network, positional information, protocol type that ANDSF can also report according to UE, the tabulation of reorganization Access Network.
For example: ANDSF is according to the positional information that UE reports, and the Access Network priority that obtains UE is:
| Priority | Access Network | Protocol type | Trusting relationship |
| 1 | AN1 | PMIP | Credible |
| 2 | AN2 | DISMIP | Insincere |
| 3 | AN3 | PMIP | Insincere |
| 4 | AN4 | MIPv4 | Credible |
Carry in the UE ability information and only support the PMIP agreement, then the access network policy of ANDSF rearrangement is:
| Priority | Access Network | Protocol type | Trusting relationship |
| 1 | AN1 | PMIP | Credible |
| 2 | AN3 | PMIP | Insincere |
Access network policy after step 807:ANDSF will recombinate sends to UE, and for example, the intervention net strategy after ANDSF can will recombinate by the access network request response message sends to UE.
Step 808:UE carries out network selecting and switches decision.
Step 809:UE switches according between self needs initiation system.
Example two:
This example describes to non-3GPP connecting system switching UE.Fig. 9 is the flow chart according to the example two of the embodiment of the invention, and as shown in Figure 9, this flow process comprises the steps:
Step 901: the terminal use is linked into EPS by the 3GPP connecting system.Certainly occurrence scene also may be that UE is linked into EPS by non-3GPP connecting system, because subsequent operation is similar, does not do at this and to give unnecessary details.
Step 902: terminal is because certain reason need be initiated to switch, and for example, the wireless signal strength of current access network supports reasons such as current business inadequately.
Step 903: terminal visit ANDSF, obtain the Access Network that can insert, ANDSF obtains Access Network information according to UE current location Access Network situation visit AAA, the method of obtaining information is illustrated in example one, do not repeat them here, then, selecting an Access Network to initiate to switch adheres to.But owing to comprise the trusting relationship of Access Network and terminal attaching network in the list that ANDSF provides, but reach the protocol type that Access Network is supported, so which network UE can selectively insert.Generally speaking, in order to guarantee that UE can insert by first-selected 3GPP Access Network trusty for business provides rational QoS to guarantee and accurately reasonably charging.UE has known that this Access Network is that trust or mistrustful.
Step 904: what judge access is Access Network trusty or fly-by-night Access Network.
Step 905: if Access Network is trusty, terminal is finished authorizing procedure according to the access way of Access Network trusty so.Then, execution in step 906.
Step 905a: if Access Network is fly-by-night, terminal inserts according to the access way of fly-by-night Access Network so.At first, terminal need be sought an ePDG for this inserts.
Step 905b: set up the IPsec tunnel between terminal and the ePDG.
Step 905c: terminal use's access authentication is finished.Execution in step 906 then.
Step 906: the subsequent step of switching flow, for example, the switching in PMIP tunnel, the refreshing and rebuild etc. of PCC session.
Step 907: switch and finish: terminal inserts EPS by non-3GPP connecting system.
Device embodiment
Corresponding with the method for describing among the said method embodiment, according to embodiments of the invention, a kind of ANDSF also is provided, Figure 10 is the structured flowchart according to the ANDSF of the embodiment of the invention, as shown in figure 10, this ANDSF comprises: receiver module 12, first acquisition module 14, sending module 16 are described in detail this structure below.
Receiver module 12 is used to receive the access network request message of self terminal; First acquisition module 14 is connected to receiver module 12, is used for obtaining from AAA the attribute information of the Access Network that provides to terminal; Sending module 16 is connected to first acquisition module 14, and the information that the Access Network that will provide to terminal is provided sends to terminal, wherein, carries the attribute information of this Access Network in the information of access.
Figure 11 is the structured flowchart concrete according to the ANDSF of the embodiment of the invention, as shown in figure 11, this ANDSF also comprises: select module 22 to be connected to first acquisition module 14 and sending module 16, this module be used for according to following one of at least from provide to terminal the Access Network of information correspondence of Access Network select one or more Access Networks: the protocol type that terminal is supported, the attribute information of Access Network.
As shown in figure 11, this ANDSF also comprises: second acquisition module 26 is connected to selects module 22, this module to be used for obtaining the protocol type that terminal is supported from terminal.
Corresponding with the method for describing among the said method embodiment, according to embodiments of the invention, a kind of terminal also is provided, Figure 12 is the structured flowchart according to the terminal of the embodiment of the invention, as shown in figure 12, this terminal comprises: first sending module 32, receiver module 34, second are selected module 36, below this structure are described in detail.
First sending module 32 is used for sending access network request message to access network discovery and selection function unit ANDSF; Receiver module 34 is connected to first sending module 32, is used to receive the information from the Access Network of ANDSF, wherein, comprises the attribute information of this Access Network in the information of Access Network; Second selects module 36 to be connected to receiver module 34, is used for receiving to such an extent that the information of Access Network is selected the Access Network that inserts from the Access Network of the information correspondence of this Access Network according to receiver module.
Figure 13 is the structured flowchart concrete according to the terminal of the embodiment of the invention, and as shown in figure 13, this terminal also comprises: second sending module 38, this module are used for sending the protocol type that this terminal is supported to ANDSF.
Need to prove that the method for describing among above-mentioned terminal and ANDSF and the method embodiment is corresponding, has carried out detailed description in method embodiment, does not repeat them here.
In sum, pass through the above embodiment of the present invention, solved that UE in the correlation technique can't obtain the attribute information of Access Network before switching and the problem that causes influencing terminal switching efficiency and business continuance, and then improved the switching efficiency of terminal and guaranteed professional continuity.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. an Access Network information getting method is characterized in that, comprising:
Access network discovery and selection function unit ANDSF obtain the attribute information of the Access Network that provides to described terminal from authentication authorized charging server AAA after receiving the access network request message of self terminal;
Described ANDSF sends to described terminal with the information of described Access Network, so that described terminal is selected the Access Network that inserts from the Access Network of the information correspondence of described Access Network according to the information of described Access Network, wherein, carry the attribute information of described Access Network in the information of described Access Network.
2. method according to claim 1 is characterized in that, described ANDSF sends to described terminal with the information of described Access Network and comprises: the information of all described Access Networks that described ANDSF will provide to described terminal sends to described terminal;
Described ANDSF will send to described terminal to the information of all described Access Networks that described terminal provides after, described method also comprises: described terminal is selected the Access Network that inserts from the Access Network of the information correspondence of all described Access Networks according to the information of the ability of described terminal and Access Network, wherein, the ability of described terminal comprises one of following at least: whether the protocol type of described terminal support, described terminal need to insert the Access Network of trust.
3. method according to claim 1 is characterized in that, described ANDSF sends to described terminal with the information of described Access Network and comprises:
Described ANDSF selects one or more Access Networks according to the first information from the Access Network of the information correspondence of described Access Network, and the information of described one or more Access Networks of selecting sent to described terminal, wherein, the described first information comprises one of following at least: the protocol type that described terminal is supported, the attribute information of described Access Network.
4. method according to claim 3 is characterized in that, described ANSDF selected described one or more Access Networks from the Access Network of the information correspondence of described Access Network before, described method also comprised:
Described terminal sends the message of the protocol type that carries described terminal support to described ANDSF;
Described ANDSF obtains the protocol type that described terminal is supported from described message.
5. method according to claim 3, it is characterized in that, get access at described ANDSF under the prerequisite of the protocol type that described terminal supports, described ANDSF selects described one or more Access Network according to the protocol type of described terminal support or according to the protocol type of described terminal support and the attribute information of described Access Network from the Access Network of the information correspondence of described Access Network.
6. method according to claim 3, it is characterized in that, do not get access at described ANDSF under the prerequisite of the protocol type that described terminal supports, described ANDSF selects described one or more Access Network according to the attribute information of described Access Network from the Access Network of the information correspondence of described Access Network.
7. according to each described method in the claim 1 to 6, it is characterized in that it is one of following that the attribute information of described Access Network comprises at least:
The protocol type that described Access Network is supported, the trusting relationship of described Access Network.
8. access network discovery and selection function unit is characterized in that, comprising:
Receiver module is used to receive the access network request message of self terminal;
First acquisition module is used for obtaining from AAA the attribute information of the Access Network that provides to described terminal;
Sending module is used for the information of described Access Network is sent to described terminal, wherein, carries the attribute information of this Access Network in the information of described Access Network.
9. access network discovery according to claim 8 and selection function unit is characterized in that, also comprise:
Select module, be used for one of at least selecting one or more Access Networks: the protocol type that described terminal is supported, the attribute information of described Access Network from the Access Network of the information correspondence of described Access Network according to following;
Second acquisition module is used for obtaining the protocol type that described terminal is supported from described terminal.
10. a terminal is characterized in that, comprising:
First sending module is used for sending access network request message to access network discovery and selection function unit ANDSF;
Receiver module is used to receive the information from the Access Network of described ANDSF,
Wherein, the information of described Access Network comprises the attribute information of this Access Network;
Second selects module, is used for receiving to such an extent that the information of described Access Network is selected the Access Network that inserts from the Access Network of the information correspondence of described Access Network according to described receiver module.
11. the terminal according to described in the claim 10 is characterized in that, also comprises:
Second sending module is used for sending the protocol type that this terminal is supported to described ANDSF.
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| CN200910179815XA CN102045811A (en) | 2009-10-12 | 2009-10-12 | Access network information acquisition method, access network finding and selecting functional unit and terminal |
| PCT/CN2009/075562 WO2010145134A1 (en) | 2009-10-12 | 2009-12-14 | Access network information obtainment method, access network discovery and selection function unit and terminal |
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| CN200910179815XA CN102045811A (en) | 2009-10-12 | 2009-10-12 | Access network information acquisition method, access network finding and selecting functional unit and terminal |
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| WO (1) | WO2010145134A1 (en) |
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