CN101990279A - Network selecting method and terminal - Google Patents
Network selecting method and terminal Download PDFInfo
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- CN101990279A CN101990279A CN2009101615464A CN200910161546A CN101990279A CN 101990279 A CN101990279 A CN 101990279A CN 2009101615464 A CN2009101615464 A CN 2009101615464A CN 200910161546 A CN200910161546 A CN 200910161546A CN 101990279 A CN101990279 A CN 101990279A
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Abstract
The invention discloses a network selecting method, comprising the steps of: obtaining a wireless fidelity WiFi roaming agreement party list RAPL configured in a home NSP network from a home network service provider NSP network by a terminal; scanning an available WiFi access network by the terminal when accessing the WiFi access network; obtaining an available WiFi access network list; and selecting the WiFi access network to be accessed from the available WiFi access network list. The terminal in the invention obtains the roaming agreement list signed by the home NSP network and the WiFi network, and the roaming agreement list signed by the home NSP network and the other NSP networks when the WiMAX network initially accesses the authentication; and the terminal selects the roamed network, thereby the suitable roaming network is preferably accessed.
Description
Technical field
The present invention relates to World Interoperability for Microwave Access, WiMax (World Interoperability for MicrowaveAccess, WiMAX) network and Wireless Fidelity (Wireless Fidelity, WiFi) interworking technology of network relates in particular to a kind of network selecting method and system.
Background technology
WiMAX (Worldwide Interoperability for Microwave Access, micro-wave access global inter communication) is based on the wireless access wide band technology of IEEE 802.16 standards, can effectively utilizes the limited wireless frequency spectrum resource bigger bandwidth of air-interface (the highest 70Mbps data transmission capabilities) and wider transmission coverage (the transmission of wireless signals distance can reach 60 kilometers farthest) are provided.
WiFi (Wireless Fidelity, Wireless Fidelity) also is the Radio Transmission Technology that higher bandwidth can be provided, and disposes in a large number in office, family and hotels and other places at present.But WiFi is as a kind of short range wireless transmission technology, and its network coverage less (about about 100 meters) generally can only replenishing as other wireless technology networking.But to have the networking expense low and dispose advantages such as simple for the WiFi network, and it is very high to adopt the WiMAX technology to set up the cost of investment of large-scale network, so WiFi and WiMAX network will coexist in quite long period.
Consider that WiMAX is as a kind of wireless metropolitan area network technology, the WiFi focus can be connected to the Internet, therefore, the intercommunication of WiMAX and two kinds of networks of WiFi will help two network advantages complementations, and expand the coverage area, allow the mobile subscriber in different Radio Access Network environment, can utilize two characteristics that network is different separately in the geographic range widely, can obtain consistent Operational Visit again.
Fig. 1 is that MS/STA (Mobile Station/STAtion, terminal equipment) is in the structured flowchart that passes through the WiMAX wireless access network under the non-roaming situation and pass through WiFi Access Network access WiMAX core net, comprises following network element:
Authentication and authorization charging server (Authentication, Authorisation and Accounting abbreviate aaa server as): be responsible for access authentication, mandate and the charging of terminal.
IWF node (Interworking Function abbreviates IWK as): be responsible for terminal initially insert the WiMAX network by the WiFi network and coordinate terminal from the WiMAX Access Network to the switching the WiFi Access Network.
WiFi signaling forwarding capability (WiFi Signal Forward Function, be called for short WiFi SFF): be responsible for terminal at the WiMAX Access Network when the WiFi Access Network switches, be established to its IP tunnel by the WiMAX network, and transmit the pre-registration signaling of terminal by the WiFi access of IP tunnel transmission.
WiMAX signaling forwarding capability (WiMAX Signal Forward Function is called for short WiMAXSFF): be responsible for terminal and carry out the pre-registration process that WiMAX inserts, and terminal is carried out the dummy source BS function that switches to the WiMAX network by the WiFi network.
Wireless access node (Access Point abbreviates AP as): being positioned at the WiFi Access Network, is a hub that possesses the wireless signal transmission function, and it can be many radio networking devices the dialogue tandem is provided.Be equivalent to the hub or switch in the cable network.
Access controller (Access Controller is called for short AC): be positioned at the WiFi Access Network, between WiFi and Internet, play gateway function, will converge, insert Internet from the data of different AP.AC can come to finish for the user functions such as access authentication and authentication by operator logo as client.System also comprises:
Dynamic Host Configuration Protocol server (Dynamic Host Configuration Protocol Server, the abbreviation Dynamic Host Configuration Protocol server), home agent (Home Agent, be called for short HA) and regional mobile anchor point (Local Mobility Anchor is called for short LMA) etc.
Fig. 2 is that terminal initially inserts under the WiMAX network, and subsequent movement is to the place that has a plurality of WiFi Access Networks to cover, and wherein the NSP of part WiFi network and user attaching (Internet Service Provider) network has roaming agreement, and part does not have roaming agreement.In addition, the NSP network that links to each other with the WiFi network, some and user attaching NSP network have roaming agreement, and some does not have roaming agreement.In the prior art, terminal is behind the zone that moves to a plurality of WiFi Access Networks coverings, the WiFi Access Network that scans is attempted inserting one by one, this mode may cause being linked into the WiFi Access Network that does not have roaming agreement with the NSP network of user attaching, also might cause terminal inserts does not have roaming agreement with the NSP network of user attaching visit NSP network, to such an extent as to cause the partial service of terminal normally to carry out, or cause user's rate to increase.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of network selecting method and system, and in WiMAX network and WiFi network interworking framework, the realization terminal is chosen WiFi Access Network and the NSP network that has roaming agreement with the NSP network of its ownership.
For solving the problems of the technologies described above, a kind of network selecting method of the present invention comprises:
Terminal is obtained the Wireless Fidelity WiFi roaming agreement relation list RAPL that disposes in the ownership NSP network from its NSP of home network services provider network;
Terminal scans available WiFi Access Network when carrying out the access of WiFi Access Network, obtain available WiFi Access Network tabulation, selects WiFi Access Network to be accessed according to WiFi RAPL from available WiFi Access Network tabulation.
Further, in WiFi RAPL, record: the tabulation of the WiFi Access Network of roaming agreement, the selection strategy of the priority of WiFi Access Network and WiFi Access Network are arranged with ownership NSP network.
Further, the selection strategy of WiFi Access Network comprises: strict restriction;
From available WiFi Access Network tabulation, select the process of WiFi Access Network to be accessed to comprise according to WiFi RAPL:
Terminal is according to ownership NSP network the tabulation of WiFi Access Network of roaming agreement and the priority of WiFi Access Network being arranged, in available WiFi Access Network tabulation, mate, comprise available WiFi Access Network if having in the WiFi Access Network tabulation of roaming agreement with ownership NSP network, then according to priority order is carried out access attempts, and the WiFi Access Network that can insert is as WiFi Access Network to be accessed;
If have the available WiFi Access Network that comprises in the WiFi Access Network tabulation of roaming agreement to insert with ownership NSP network, perhaps have in the WiFi Access Network tabulation of roaming agreement not comprise available WiFi Access Network, then finish the selection of WiFi Access Network with ownership NSP network.
Further, the selection strategy of WiFi Access Network comprises: part flexibly;
From available WiFi Access Network tabulation, select the process of WiFi Access Network to be accessed to comprise according to WiFi RAPL:
Terminal is according to ownership NSP network the tabulation of WiFi Access Network of roaming agreement and the priority of WiFi Access Network being arranged, in available WiFi Access Network tabulation, mate, comprise available WiFi Access Network if having in the WiFi Access Network tabulation of roaming agreement with ownership NSP network, then according to priority order is carried out access attempts, and the WiFi Access Network that can insert is as WiFi Access Network to be accessed; The WiFi Access Network that if there is no can insert, or have when not comprising available WiFi Access Network in the WiFi Access Network tabulation of roaming agreement with ownership NSP network, then to be not included in the WiFi Access Network tabulation that belongs to the NSP network and have roaming agreement in available WiFi Access Network, carry out access attempts, the WiFi Access Network that can insert is as WiFi Access Network to be accessed.
Further, the selection strategy of WiFi Access Network comprises: fully flexibly;
From available WiFi Access Network tabulation, select the process of WiFi Access Network to be accessed to comprise according to WiFi RAPL:
Terminal is carried out access attempts to the WiFi Access Network in the available WiFi Access Network tabulation, and the WiFi Access Network that can insert is as WiFi Access Network to be accessed.
Further, terminal is also obtained NSP RAPL from this ownership NSP network when obtaining WiFi RAPL from its ownership NSP network;
After terminal is selected WiFi Access Network to be accessed, obtain available NSP network list, write down the NSP network that has annexation with WiFi Access Network to be accessed in the available NSP network list, from available NSP network list, select NSP network to be accessed according to NSP RAPL.
Further, in NSP RAPL, record: tabulation, the priority of NSP network and the NSP network selection strategy of the NSP network of roaming agreement are arranged with ownership NSP network.
Further, if comprise the ownership NSP network of terminal in the available NSP network list, then terminal selects its ownership NSP network as NSP network to be accessed.
Further, NSP network selection strategy comprises: strict restriction;
From available NSP network list, select the process of NSP network to be accessed to comprise according to NSP RAPL:
Terminal is according to ownership NSP network the NSP network list of roaming agreement and the priority of NSP network being arranged, in available NSP network list, mate, comprise available NSP network if having in the NSP network list of roaming agreement with ownership NSP network, then according to priority order is carried out access attempts, and the NSP network that can insert is as NSP network to be accessed;
If have the available NSP network that comprises in the NSP network list of roaming agreement to insert with ownership NSP network, perhaps have in the NSP network list of roaming agreement not comprise available NSP network with ownership NSP network, then finish the NSP network selection.
Further, NSP network selection strategy comprises: part flexibly;
From available NSP network list, select the process of NSP network to be accessed to comprise according to NSP RAPL:
Terminal is according to ownership NSP network the tabulation of NSP network of roaming agreement and the priority of NSP network being arranged, in available NSP network list, mate, comprise available NSP network if having in the NSP network list of roaming agreement with ownership NSP network, then according to priority order is carried out access attempts, and the NSP network that can insert is as NSP network to be accessed;
There is not the NSP network that can insert if having in the NSP network list of roaming agreement with ownership NSP network, or have when not comprising available NSP network in the NSP network list of roaming agreement with ownership NSP network, then to be not included in the NSP network list that belongs to the NSP network and have roaming agreement in available NSP network, carry out access attempts, the NSP network that can insert is as NSP network to be accessed.
Further, NSP network selection strategy comprises: fully flexibly;
From available NSP network list, select the process of NSP network to be accessed to comprise according to NSP RAPL:
Terminal is carried out access attempts to the NSP network in the available NSP network list, and the NSP network that can insert is as NSP network to be accessed.
Further, terminal is obtained WiFi RAPL and NSP RAPL from ownership NSP network in the EAP authentication process.
Further, the terminal detailed process of obtaining WiFi RAPL and NSP RAPL in the EAP authentication process from ownership NSP network comprises:
Ownership NSP network by inserting challenge message, sends to terminal with WiFiRAPL and NSP RAPL after receiving the access request message.
Further, a kind of network selecting terminal comprises WiFi access network selection module,
WiFi access network selection module is used for obtaining the WiFi RAPL that disposes the ownership NSP network from the ownership NSP network of this terminal; When carrying out the access of WiFi Access Network, scan available WiFi Access Network, obtain available WiFi Access Network tabulation, from available WiFi Access Network tabulation, select WiFi Access Network to be accessed according to WiFi RAPL.
Further, this terminal also comprises the NSP network selection module,
The NSP network selection module is used for obtaining NSP RAPL from the ownership NSP network of this terminal; From WiFi Access Network to be accessed, obtain available NSP network list, write down the NSP network that has annexation with WiFi Access Network to be accessed in the available NSP network list, from available NSP network list, select NSP network to be accessed according to NSP RAPL.
In sum, terminal among the present invention according to it when the initial access authentication of WiMAX network, its ownership NSP network that obtains and the roaming agreement tabulation of WiFi network contraction, with and the roaming agreement of ownership NSP network and other NSP network contractions tabulate, the network that selection roams into, thus realize that the preferred roaming network that is fit to more inserts.
Description of drawings
Fig. 1 is in the structured flowchart that inserts the WiMAX core net under the non-roaming situation by WiMAX Access Network and WiFi Access Network for terminal in the prior art;
Fig. 2 is a terminal after initial access the under the WiMAX network, roams into the schematic diagram in the zone that a plurality of WiFi Access Networks cover;
Fig. 3 obtains the flow chart of WiFi RAPL and NSP RAPL for terminal of the present invention;
Fig. 4 selects the flow chart of WiFi Access Network and NSP network for terminal of the present invention;
The flow chart that Fig. 5 selects network to insert according to WiFi RAPL and NSP RAPL for terminal when WiFi Access Network initial network entry;
The flow chart that Fig. 6 selects network to switch according to WiFi RAPL and NSP RAPL for terminal when the WiMAX network switches to the WiFi Access Network;
Fig. 7 is the Organization Chart of network selecting terminal of the present invention.
Embodiment
The present invention disposes the roaming agreement relation list (WiFi Roaming Agreement Party List is called for short WiFiRAPL) of ownership NSP network and other WiFi network and the roaming agreement relation list (NSP RAPL) of ownership NSP network and other NSP network on the AAA of the home network that the user contracts.
Record in WiFi RAPL: with ownership NSP network the tabulation of the WiFi Access Network of roaming agreement is arranged, the priority of WiFi Access Network, the information such as tabulation of the selection strategy of WiFi Access Network and limited WiFi Access Network.
Record in NSP RAPL: with ownership NSP network the tabulation of the NSP network of roaming agreement is arranged, the priority of NSP network, the tabulation of NSP network selection strategy and limited NSP network.
Selection strategy comprises: strict restriction, partly flexible and flexibly complete.
Strict restriction is meant that the network that does not have roaming agreement forbids selecting.
Part is meant that flexibly preferential selection has the network of roaming agreement, and next selects the network of available no roaming agreement, but limited network is forbidden selecting.
Be meant that fully flexibly the available network with roaming agreement has identical priority with the available network that does not have roaming agreement, but limited network is forbidden selecting.
Terminal is by carrying out the EAP authentication process among the present invention, AAA by the NSP network of user attaching returns WiFi RAPL and NSP RAPL to the user, when terminal is carried out initial network entry by the WiFi Access Network or when the WiMAX network switches to the WiFi Access Network, select WiFi Access Network and coupled NSP network according to the WiFi RAPL and the NSP RAPL of buffer memory.The terminal of mentioning herein is the dual-mode terminal of supporting WiMAX and two kinds of patterns of WiFi.
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.
Fig. 3 is that MS obtains the method that auxiliary data (comprising WiFi RAPL and NSP RAPL) was found and selected to network from the NSP network of user attaching by the WiMAX access authentication process among the present invention, comprising:
Step 301:MS obtains downlink channel, and MAC synchronously and obtain the up channel parameter;
Step 302:MS carries out initial ranging;
(Base Station begins basic capability negotiating between BS) for step 303:MS and base station;
After step 304:BS receives MS basic capability negotiating request message, initiate terminal pre-registration process to Access Network service network gateway (Access Service Network GateWay is called for short ASN-GW);
Step 305:ASN-GW initiates the EAP authentication process to MS, that is: ASN-GW sends AR_EAP_Transfer message to BS, wherein comprises EAP request/identification message in the EAP information;
Step 306:BS sends to MS with EAP request/identification message by PKMv2 response/EAP-Transfer message;
Step 307:MS sends EAP response/identity information by PKMv2 request/EAP-Transfer message to BS, wherein comprises network access Identifier (Network AccessIdentity is called for short NAI) information in the EAP response/identity information;
The EAP response/identity information that step 308:BS will comprise NAI sends to ASN-GW by AR_EAP_Transfer message;
The AAA agency of step 309:ASN-GW in MS visit NSP network sends and inserts request message, wherein carries the EAP response/identity information that comprises NAI;
Step 310: the aaa server of the AAA agency in the visit NSP network in ownership NSP network transmitted and inserted request message;
Step 311: the AAA agency of the aaa server in the ownership NSP network in visit NSP network sends and inserts challenge message, wherein carry EAP request/expansion type (Expanded Types) information, comprise operator's predetermined data in the EAP expansion type information, aaa server is found the network of user place visit net and is selected auxiliary data to comprise that WiFi RAPL and NSP RAPL cover in operator's predetermined data;
Step 312: the AAA agency in the visit NSP network transmits to ASN-GW and inserts challenge message;
Step 313:ASN-GW sends AR_EAP_Transfer message to BS, wherein comprises the EAP request/expansion type information that inserts in the challenge message in EAP information;
Step 314:BS sends to MS with EAP request/expansion type information by PKMv2 response/EAP-Transfer message;
Network in the step 315:MS buffer memory EAP request/expansion type information is found and is selected auxiliary data, comprises information such as WiFi RAPL and NSP RAPL;
Step 316:MS sends to BS with EAP response/expansion load by PKMv2 request/EAP-Transfer message, wherein comprises NAI information in the EAP response/expansion;
Step 317:BS sends to ASN-GW by the EAP response/extend information that AR_EAP_Transfer message will comprise NAI;
The AAA agency of step 318:ASN-GW in visit NSP network sends and inserts request message;
Step 319: the aaa server of the AAA agency in the visit NSP network in ownership NSP network transmitted and inserted request message;
The aaa server of step 320:MS and its ownership NSP network is consulted the EAP authentication arithmetic;
Step 321: the AAA agency of the aaa server in the ownership NSP network in visit NSP network sends and accepts message, wherein comprises the EAP success in the EAP load;
Step 322: the AAA agency in the visit NSP network transmits to ASN-GW and accepts message;
Step 323:ASN-GW sends AR_EAP_Transfer message to BS, and wherein EAP load comprises the EAP success;
Step 324:BS sends to MS with EAP success load by PKMv2 response/EAP-Transfer message;
Step 325:MS carries out 802.16 registration processes;
Step 326: data channel registration;
Step 327: initial service amount or preset traffic carrying capacity and create.
Figure 4 shows that network discovery and selection auxiliary data execution WiFi Access Network and the method for visiting the NSP network selection that terminal use of the present invention gets access to from belonging to the NSP network, comprising:
401: when terminal is carried out access by the WiFi Access Network (initial network entry or switch to the WiFi Access Network) authentication, scan available WiFi Access Network, obtain available WiFi Access Network tabulation, and find and select the WiFi RAPL in the auxiliary data to carry out the selection of WiFi Access Network according to network, optimize WiFi Access Network to be accessed;
The selection course of WiFi Access Network specifically comprises:
If the WiFi network selecting strategy among the WiFi RAPL is fully flexibly, then from the access attempts of available WiFi Access Network tabulation carrying out in order WiFi Access Network, the WiFi Access Network that selection can insert is as described WiFi Access Network to be accessed.
If the WiFi network selecting strategy among the WiFi RAPL is that strict restriction or part are flexible, then according to the WiFi Access Network tabulation that roaming agreement is arranged among the WiFi RAPL and the priority of WiFi Access Network, order coupling from available WiFi Access Network tabulation;
Comprise available WiFi Access Network if having in the WiFi Access Network tabulation of roaming agreement with ownership NSP network, then according to priority carry out the access attempts of WiFi Access Network in proper order, if can insert, the WiFi Access Network that then can insert is as WiFi Access Network to be accessed;
If have the available WiFi Access Network that comprises in the WiFi Access Network tabulation of roaming agreement can't successfully carry out access authentication with ownership NSP network, perhaps have in the WiFi Access Network tabulation of roaming agreement and do not comprise available WiFi Access Network with ownership NSP network, when WiFi network selecting strategy is strict restriction, finish network and find and selection course, failure networks.When WiFi network selecting strategy is that part is flexible, and exist be not included in the WiFi Access Network tabulation that belongs to the NSP network and have roaming agreement in available WiFi Access Network, then in order this available WiFi Access Network is carried out access attempts, select the WiFi Access Network that can insert; If by be not included in the WiFi Access Network tabulation that belongs to the NSP network and have roaming agreement in all available WiFi Access Networks, all can't successfully carry out access authentication, then finish network and find and selection course, failure networks.
402: after selecting WiFi Access Network to be accessed, terminal is obtained the tabulation (available NSP network list) that the NSP network of direct connection relational is arranged with this WiFi Access Network to be accessed by this WiFi Access Network to be accessed, and carries out NSP network selection to be accessed according to NSP RAPL;
Visit NSP network selection process specifically comprises:
If comprise terminal attaching NSP network in the available NSP network list, then terminal directly selects to belong to the NSP network as NSP network to be accessed, the access authentication that networks.
If the NSP network selecting strategy among the NSP RAPL is fully flexibly, then carry out the access attempts of NSP network in order from available NSP network list, select the NSP network that can insert.
If the NSP network selecting strategy among the NSP RAPL is that strict restriction or part are flexible, then according to ownership NSP network the NSP network list of roaming agreement and the priority of NSP network being arranged among the NSP RAPL, order coupling from available NSP network list, include available NSP network if having in the NSP network list of roaming agreement with ownership NSP network, then according to priority order is carried out the access authentication trial of NSP network, selects the NSP network that can insert;
If available NSP (V-NSP) network that comprises in the NSP network list of roaming agreement is arranged with ownership NSP network, but all can't successfully carry out access authentication, perhaps have in the V-NSP network list of roaming agreement and do not comprise available V-NSP network with ownership NSP network, when WiFi network selecting strategy is that strictness limits execution in step 403;
When WiFi network selecting strategy be part flexibly, and exist be not included in the NSP network list that belongs to the NSP network and have roaming agreement in available NSP network, then carry out the access attempts of NSP network in order; If by all the available NSP networks in the NSP network list that is not included in roaming agreement, all can't successfully carry out access authentication, execution in step 403;
403: terminal is selected the next WiFi Access Network that can insert according to the method for step 401, and selects the NSP network that can insert according to the method for step 402;
When all available WiFi Access Networks all can't successfully carry out access authentication, then finish network and find and selection course, failure networks.If as long as once access authentication success then exits network and finds and selection course, network successfully in the said process.
Figure 5 shows that terminal method according to network discovery and selection auxiliary data selection network when WiFi Access Network initial network entry, comprising:
Step 501:STA scanning is also obtained in abutting connection with available WiFi Access Network tabulation;
Step 502:STA selects the WiFi Access Network according to the WiFi RAPL of buffer memory and in abutting connection with available WiFi Access Network tabulation;
Step 503:STA obtains the NSP network list that directly links to each other with this WiFi Access Network by the WiFi Access Network;
Step 504:STA selects the NSP network according to the NSP RAPL of buffer memory and the NSP network list of returning;
Step 505:STA carries out 802.11 associations to the WiFi Access Network;
Step 506:STA is according to the NSP network of selecting, and structure Decorated NAI carries out the EAP authentication by the NSP network of selecting to ownership NSP network;
Straight line is shaken hands for 4 times between step 507:STA and the WiFi Access Network;
Step 508:WiFi Access Network is separated inaccessible 802.1x port;
Step 509:STA initiates dhcp process request HoA address.
At this moment, terminal connects to connect between the service network by WiFi Access Network and WiMAX to be set up successfully, can transmit up/downlink data.
Figure 6 shows that STA finds according to network when the WiMAX network switches to the WiFi Access Network and selects auxiliary data to select the method for network, comprising:
Step 601:STA is attached to the WiMAX Access Network, and terminal and WiMAX connect between the service network by WiMAX Access Network transmission data;
The pre-registration of WiFi network is carried out in step 602:STA decision;
Step 603:STA scanning is also obtained in abutting connection with available WiFi Access Network tabulation;
Step 604:STA selects the WiFi Access Network according to the WiFi RAPL of buffer memory and in abutting connection with available WiFi Access Network tabulation;
Step 605:STA obtains the NSP network list that directly links to each other with this WiFi Access Network by the WiFi Access Network;
Step 606:STA selects the NSP network according to the NSP RAPL of buffer memory and the NSP network list of returning;
Step 607:STA carries out the switching of the WiFi Access Network of selecting;
Step 608:STA successful switch also is connected to the WiFi Access Network, can be by the up/downlink data of WiFi Access Network transmission;
Step 609: the connection and the resource that discharge the WiMAX network behind the handover success.
As shown in Figure 7, the present invention also provides a kind of network selecting terminal, comprising: WiFi access network selection module and NSP network selection module, wherein:
WiFi access network selection module is used for obtaining the WiFi RAPL that disposes the ownership NSP network from the ownership NSP network of this terminal; When carrying out the access of WiFi Access Network, scan available WiFi Access Network, obtain available WiFi Access Network tabulation, from available WiFi Access Network tabulation, select WiFi Access Network to be accessed according to WiFi RAPL.
The NSP network selection module is used for obtaining NSP RAPL from the ownership NSP network of this terminal; From WiFi Access Network to be accessed, obtain available NSP network list, write down the NSP network that has annexation with WiFi Access Network to be accessed in the available NSP network list, from available NSP network list, select NSP network to be accessed according to NSP RAPL.
Other function of WiFi access network selection module and NSP network selection module please refer to the method content description.
The above-mentioned just embodiment of the invention.The present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the present invention, and these change and be out of shape the protection range that all should belong to the appended claim of the present invention accordingly.
Claims (15)
1. network selecting method comprises:
Terminal is obtained the Wireless Fidelity WiFi roaming agreement relation list RAPL that disposes in the described ownership NSP network from its NSP of home network services provider network;
Described terminal scans available WiFi Access Network when carrying out the access of WiFi Access Network, obtain available WiFi Access Network tabulation, selects WiFi Access Network to be accessed according to described WiFi RAPL from described available WiFi Access Network tabulation.
2. the method for claim 1 is characterized in that,
In described WiFi RAPL, record: the tabulation of the WiFi Access Network of roaming agreement, the selection strategy of the priority of WiFi Access Network and WiFi Access Network are arranged with ownership NSP network.
3. method as claimed in claim 2 is characterized in that,
The selection strategy of described WiFi Access Network comprises: strict restriction;
Described process according to described WiFi RAPL selection from described available WiFi Access Network is tabulated WiFi Access Network to be accessed comprises:
Described terminal has the tabulation of WiFi Access Network of roaming agreement and the priority of WiFi Access Network according to described and ownership NSP network, in described available WiFi Access Network tabulation, mate, if having in the WiFi Access Network tabulation of roaming agreement, described and ownership NSP network comprise available WiFi Access Network, then according to priority order is carried out access attempts, and the WiFi Access Network that can insert is as described WiFi Access Network to be accessed;
If described have the available WiFi Access Network that comprises in the WiFi Access Network tabulation of roaming agreement to insert with ownership NSP network, perhaps described and ownership NSP network have in the WiFi Access Network tabulation of roaming agreement and do not comprise available WiFi Access Network, then finish the selection of WiFi Access Network.
4. method as claimed in claim 2 is characterized in that,
The selection strategy of described WiFi Access Network comprises: part flexibly;
Described process according to described WiFi RAPL selection from described available WiFi Access Network is tabulated WiFi Access Network to be accessed comprises:
Described terminal has the tabulation of WiFi Access Network of roaming agreement and the priority of WiFi Access Network according to described and ownership NSP network, in described available WiFi Access Network tabulation, mate, if having in the WiFi Access Network tabulation of roaming agreement, described and ownership NSP network comprise available WiFi Access Network, then according to priority order is carried out access attempts, and the WiFi Access Network that can insert is as described WiFi Access Network to be accessed; The WiFi Access Network that if there is no can insert, or described and ownership NSP network has when not comprising available WiFi Access Network in the WiFi Access Network tabulation of roaming agreement, then to be not included in the WiFi Access Network tabulation that belongs to the NSP network and have roaming agreement in available WiFi Access Network, carry out access attempts, the WiFi Access Network that can insert is as described WiFi Access Network to be accessed.
5. method as claimed in claim 2 is characterized in that,
The selection strategy of described WiFi Access Network comprises: fully flexibly;
Described process according to described WiFi RAPL selection from described available WiFi Access Network is tabulated WiFi Access Network to be accessed comprises:
WiFi Access Network during described terminal is tabulated to described available WiFi Access Network carries out access attempts, and the WiFi Access Network that can insert is as described WiFi Access Network to be accessed.
6. the method for claim 1 is characterized in that,
Described terminal is also obtained NSP RAPL from this ownership NSP network when obtaining described WiFi RAPL from its ownership NSP network;
After described terminal is selected WiFi Access Network to be accessed, obtain available NSP network list, write down the NSP network that has annexation with WiFi Access Network to be accessed in the described available NSP network list, from described available NSP network list, select NSP network to be accessed according to described NSP RAPL.
7. method as claimed in claim 6 is characterized in that,
In described NSP RAPL, record: tabulation, the priority of NSP network and the NSP network selection strategy of the NSP network of roaming agreement are arranged with described ownership NSP network.
8. method as claimed in claim 7 is characterized in that,
If comprise the ownership NSP network of described terminal in the described available NSP network list, then described terminal selects its ownership NSP network as described NSP network to be accessed.
9. method as claimed in claim 7 is characterized in that,
Described NSP network selection strategy comprises: strict restriction;
Describedly from described available NSP network list, select the process of NSP network to be accessed to comprise according to described NSP RAPL:
Described terminal has the NSP network list of roaming agreement and the priority of NSP network according to described with ownership NSP network, in described available NSP network list, mate, if having in the NSP network list of roaming agreement, described and ownership NSP network comprise available NSP network, then according to priority order is carried out access attempts, and the NSP network that can insert is as described NSP network to be accessed;
If described have the available NSP network that comprises in the NSP network list of roaming agreement to insert with ownership NSP network, perhaps described and ownership NSP network have in the NSP network list of roaming agreement and do not comprise available NSP network, then finish the NSP network selection.
10. method as claimed in claim 7 is characterized in that,
Described NSP network selection strategy comprises: part flexibly;
Describedly from described available NSP network list, select the process of NSP network to be accessed to comprise according to described NSP RAPL:
Described terminal has the tabulation of NSP network of roaming agreement and the priority of NSP network according to described and ownership NSP network, in described available NSP network list, mate, if having in the NSP network list of roaming agreement, described and ownership NSP network comprise available NSP network, then according to priority order is carried out access attempts, and the NSP network that can insert is as described NSP network to be accessed;
If having in the NSP network list of roaming agreement, described and ownership NSP network do not have the NSP network that can insert, or described and ownership NSP network has when not comprising available NSP network in the NSP network list of roaming agreement, then to be not included in the NSP network list that belongs to the NSP network and have roaming agreement in available NSP network, carry out access attempts, the NSP network that can insert is as described NSP network to be accessed.
11. method as claimed in claim 7 is characterized in that,
Described NSP network selection strategy comprises: fully flexibly;
Describedly from described available NSP network list, select the process of NSP network to be accessed to comprise according to described NSP RAPL:
Described terminal is carried out access attempts to the NSP network in the described available NSP network list, and the NSP network that can insert is as described NSP network to be accessed.
12. method as claimed in claim 6 is characterized in that, described terminal is obtained described WiFi RAPL and NSP RAPL from described ownership NSP network in the EAP authentication process.
13. method as claimed in claim 12 is characterized in that,
Described terminal is obtained described WiFiRAPL and NSP RAPL from described ownership NSP network in the EAP authentication process detailed process comprises:
Described ownership NSP network by inserting challenge message, sends to described terminal with described WiFi RAPL and NSP RAPL after receiving the access request message.
14. a network selecting terminal comprises WiFi access network selection module,
Described WiFi access network selection module is used for obtaining the WiFi RAPL that disposes the described ownership NSP network from the ownership NSP network of this terminal; When carrying out the access of WiFi Access Network, scan available WiFi Access Network, obtain available WiFi Access Network tabulation, from described available WiFi Access Network tabulation, select WiFi Access Network to be accessed according to described WiFi RAPL.
15. terminal as claimed in claim 14 is characterized in that, this terminal also comprises the NSP network selection module,
Described NSP network selection module is used for obtaining NSPRAPL from the ownership NSP network of this terminal; From described WiFi Access Network to be accessed, obtain available NSP network list, write down the NSP network that has annexation with WiFi Access Network to be accessed in the described available NSP network list, from described available NSP network list, select NSP network to be accessed according to described NSP RAPL.
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