CN101730188B - Method for transmitting access network policy and home access network discovery and selection functional unit - Google Patents
Method for transmitting access network policy and home access network discovery and selection functional unit Download PDFInfo
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Abstract
The invention discloses a method for transmitting an access network policy and a home access network discovery and selection functional unit. The method comprises the following steps that: the HANDSF unit receives a home access network request message transmitted by a terminal, wherein the home access network request message carries a visited network message flag bit which is used for identifying whether the terminal successfully and integrally receives a visited access network request response message or not; and the HANDSF unit transmits the access network policy to the terminal according to the visited network message flag bit. Through the technical scheme, the method for transmitting the access network policy solves the problem that the access network policies provided by the H-ANDSF and a V-ANDSF for the terminal under a roaming condition probably conflict with each other so that the terminal can smoothly make decisions on the selecting and switching of access networks according to the received access network policies.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of method for transmitting access network policy, home access network discovery and selection function unit.
Background technology
In correlation technique, Fig. 1 is grouping system (the Evolved Packet System of evolution, referred to as EPS) and the schematic diagram of Access Network framework, as shown in Figure 1, third generation partner program (3rd Generation Partnership Project, referred to as 3GPP) EPS by universal mobile telecommunications system land radio access web (the Evolved UniversalTerrestrial Radio Access Network of evolution, referred to as E-UTRAN), mobile management unit (Mobility Management Entity, referred to as MME), gateway (ServingGateway, referred to as S-GW), grouped data network gateway (Packet Data NetworkGateway, referred to as P-GW or PDN GW), home subscriber server (HomeSubscriber Server, referred to as HSS), "Policy and Charging Rules Function entity (Policyand Charging Rules Function is referred to as PCRF) and other support nodes form.
As shown in Figure 1, the intercommunication of the support of EPS system and non-3 GPP system wherein, can be passed through the S2a/b/c Interface realization with the intercommunication of non-3 GPP system, and the anchor point between 3GPP and non-3 GPP system is P-GW.Non-3 GPP system is divided into the non-3GPP IP access of trusted and trustless non-3GPP IP access.The non-3GPP IP access of trusted can directly be connected with P-GW by the S2a interface; Trustless non-3GPP IP access needs packet data gateway (the Evolved Packet Data Gateway through evolution, referred to as ePDG) link to each other with P-GW, interface between ePDG and P-GW is the S2b interface, the S2c interface provides UE control and the mobility support relevant with user's face between the P-GW, the mobility management protocol of its support is for supporting the mobile IP v 6 (Moblie IPv6 Support for Dual StackHosts and Routers is referred to as DSMIPv6) of two stacks.
In Fig. 1, MME is responsible for the related work of the chain of command such as contextual management in the processing of mobile management, Non-Access Stratum signaling and the user's mobile management; S-GW is the accessing gateway equipment that links to each other with E-UTRAN, forwarding data between E-UTRAN and P-GW, and be responsible for the 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 is referred to as PDN), is responsible for the access of PDN and the function such as forwarding data between EPS and PDN; PCRF is the "Policy and Charging Rules Function entity, it is by receiving interface Rx and carrier network agreement (InternetProtocol, referred to as IP) business network links to each other, obtain business information, in addition, it can also link 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 is referred to as QoS) of business datum, and carry out charging control.
Access network discovery and selection function unit (Access Network DiscoverySupport Functions is referred to as ANDSF) are to propose in the evolution block core (Evolved Packet Core is referred to as EPC) at Rel-8.When UE in home network or when waiting for the home network registration, if have simultaneously 3GPP Access Network and non-3 GPP access network, perhaps there are simultaneously a plurality of non-3 GPP access networks, EPS can offer the Access Network information that its current position of UE can be used by ANDSF, selects suitable Access Network according to s own situation.ANDSF comprises the function of two aspects: data management function and control function, ANDSF can provide Network finding and select auxiliary data according to carrier policy.ANDSF mainly provides two kinds of information, that is, and and shift strategy information and access network discovery information between system.Shift strategy is can be graduate between system, for example, and hard-core general strategy, the strategy (for example, the different strategy of regulation under UE state of activation and the idle condition) used according to the active state of UE etc.If access network discovery information spinner access network type (for example, WLAN, WiMAX), the Access Network sign (for example, service set identifiers among the WLAN (Service Set Identifier, referred to as SSID)), accessible public land Mobile Access Network (Public Land Mobile Network is referred to as PLMN) information, the priority of access network etc.Certainly, ANDSF also can offer based on limit information such as the current position of UE, capacity the quantity of UE information.According to the demand of operator, ANDSF can provide simultaneously two kinds of information or wherein a kind of information only is provided.ANDSF can pass through domain name system (Domain Name System, referred to as DNS) function or DHCP (Dynamic Host Configuration Protocol, referred to as DHCP) the service function discovery, also the address of ANDSF directly can be offered UE.
Fig. 2 is the schematic diagram of ANDSF application scenarios in the correlation technique, and as shown in Figure 2, ANDSF (V-ANDSF, visit ANDSF) directly links to each other with UE by the S14 interface.This interface uses open mobile alliance device management (Open Mobile Alliance DeviceManagement is referred to as OMA DM) agreement.The S14 interface is supported PULL and PUSH pattern.The PULL pattern mainly is that UE carries out the active application to network, triggers ANDSF and sends the network information to UE.And the PUSH pattern mainly is initiatively to be triggered to UE by network to send data.
Fig. 3 is the signaling process figure of ANDSF work in the correlation technique, as shown in Figure 3, comprises following processing:
Step 1, UE is linked into the EPC system by 3GPP Access Network or non-3 GPP access network;
Step 2, UE finds ANDSF;
Step 3, UE sends access network request message to ANDSF, carries UE ability information (UE Capabilities), UE positional information (UE Location) in the request.
Step 4, the positional information that ANDSF reports according to UE, send the access network request response message to UE, carry access network information (Available Access Network Info) that the UE current location can use and up-to-date system's shift strategy (UpdatedInter-system Mobility Policies) in the message.
Step 5, UE carries out network and selects and switch to determine;
Step 6, UE is according to self needs initiation intersystem handover.
Fig. 4 is the schematic diagram of ANDSF application scenarios under the roaming scence in the correlation technique, and as shown in Figure 4, UE links to each other with V-ANDSF (visiting ANDSF) with H-ANDSF (ownership ANDSF) respectively by two S14 interfaces.Local policy H-ANDSF among H-ANDSF and the V-ANDSF sends the relevant access network policy of ownership place roaming UE to UE, V-ANDSF sends the relevant access network policy of visited place roaming UE to UE.Because the access network policy of UE is provided by H-ANDSF and V-ANDSF respectively, so H-ANDSF and the V-ANDSF access network policy that provides is likely conflict.For example, the access network policy that H-ANDSF provides is: WLAN/SSID=v, Priority=1; WLAN/SSID=z, Priority=2.And the access network policy that V-ANDSF provides is: WLAN/SSID=z, Priority=1; WLAN/SSID=v, Priority=2.Therefore, be badly in need of at present the technical scheme of a kind of H-ANDSF of solution and V-ANDSF policy conflict.
Summary of the invention
Consider in the correlation technique that the access network policy that H-ANDSF and V-ANDSF provide to terminal under roaming scence is likely the problem of conflict and proposes the present invention, for this reason, main purpose of the present invention is to provide a kind of method for transmitting access network policy, to solve the problems referred to above that exist in the correlation technique.
To achieve these goals, according to an aspect of the present invention, provide a kind of method for transmitting access network policy.
Method for transmitting access network policy according to the present invention comprises: the ownership Access Network request message that home access network discovery and selection function unit HANDSF receiving terminal send, wherein, carry visited network message flag position in the ownership Access Network request message, visited network message flag position be used for marking terminal whether success and complete reception visit access network request response message; HANDSF sends access network policy according to visited network message flag position to terminal.
Preferably, above-mentioned access network policy comprises: Access Network information, system's shift strategy.
Preferably, before the ownership Access Network request message that the HANDSF receiving terminal sends, said method also comprises: terminal sends visit access network request message to visit access network discovery and selection function unit VANDSF, wherein, carry the ability information of terminal, positional information and the public land Mobile Access Network sign of terminal in the visit access network request message; VANDSF sends visit access network request response message according to ability information and positional information to terminal, wherein, carries access network information and system's shift strategy of the visited place at VANDSF place in the visit access network request response message; Terminal receives visit access network request response message, and visited network message flag position is set.
Preferably, terminal receives visit access network request response message, and visited network message flag position is set comprises: in the situation of terminal success and complete reception visit access network request response message, terminal belong to visited network message flag position in the Access Network request message and is set to successfully receive and visits the access network request response message; In the situation that terminal does not successfully receive visit access network request response message, the visited network message flag position that terminal belongs in the Access Network request message is set to successfully not receive visit access network request response message.
Preferably, VANDSF sent visit access network request response message according to positional information to terminal before, said method also comprised: VANDSF judges whether public land Mobile Access Network sign is identical with the public land Mobile Access Network sign of VANDSF this locality; Judge that at VANDSF the access network policy that then sends to terminal is local policy in the public land Mobile Access Network sign situation identical with the public land Mobile Access Network sign of VANDSF this locality; Judge that at VANDSF in the public land Mobile Access Network sign situation not identical with the public land Mobile Access Network sign of VANDSF this locality, the access network policy that then sends to terminal is the roaming strategy.
Preferably, also carry ability information, positional information, public land Mobile Access Network sign in the ownership Access Network request message.
Preferably, HANDSF sends the home access network request response according to visited network message flag position to terminal and comprises: HANDSF determines that visited network message flag position is for successfully receiving visit access network request response message, and send the home access network request response according to positional information to terminal, wherein, carry access network information and system's shift strategy of other visited places that the terminal current location except the access zone network at VANDSF place can use in the home access network request response; HANDSF determines that visited network message flag position is not for successfully receiving visit access network request response message, and send the home access network request response according to positional information to terminal, wherein, carry access network information and system's shift strategy of the visited place that the terminal current location can use in the home access network request response.
Preferably, before HANDSF sent the home access network request response according to positional information to terminal, said method also comprised: HANDSF judges whether public land Mobile Access Network sign is identical with the public land Mobile Access Network sign of HANDSF this locality; Judge that at HANDSF the access network policy that then sends to terminal is local policy in the public land Mobile Access Network sign situation identical with the public land Mobile Access Network sign of HANDSF this locality; Judge that at HANDSF in the public land Mobile Access Network sign situation not identical with the public land Mobile Access Network sign of HANDSF this locality, the access network policy that then sends to terminal is the roaming strategy.
Preferably, after HANDSF sent the home access network request response according to visited network message flag position to terminal, said method also comprised: terminal is carried out network according to access network policy and is selected and switch to determine.
Preferably, terminal carries out the network selection according to access network policy and switching determines to comprise: in the situation that terminal successfully receives visit access network request response message, terminal carries out the network selection and switches determining according to the access network policy of HANDSF transmission; Visit in the situation of access network request response message in terminal success and complete reception, terminal is merged into elementary tactics with the access network policy of HANDSF transmission and the access network policy of VANDSF transmission, and carries out network according to elementary tactics and select and switch to determine.
To achieve these goals, according to an aspect of the present invention, a kind of home access network discovery and selection function unit are provided.
Comprise according to home access network discovery of the present invention and selection function unit: receiver module, be used for the ownership Access Network request message that receiving terminal sends, wherein, carry visited network message flag position in the ownership Access Network request message, visited network message flag position be used for marking terminal whether success and complete reception visit access network request response message; Sending module is used for sending access network policy according to visited network message flag position to terminal.
By means of technical scheme of the present invention, by in ownership Access Network request message, carrying visited network message flag position, solved in the correlation technique problem that H-ANDSF and V-ANDSF provide to terminal under roaming scence access network policy is likely conflict, made terminal carry out access network selection and to switch determining according to the access network policy that receives smoothly.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of specification, is used for together with embodiments of the present invention explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of EPS system and Access Network framework in the correlation technique;
Fig. 2 is the schematic diagram of ANDSF application scenarios in the correlation technique;
Fig. 3 is the signaling process figure of ANDSF work in the correlation technique;
Fig. 4 is the schematic diagram of ANDSF application scenarios under the roaming scence in the correlation technique;
Fig. 5 is the signaling process figure according to the method for transmitting access network policy of the embodiment of the invention;
Fig. 6 is the signaling process figure according to the example 1 of the embodiment of the invention;
Fig. 7 is the signaling process figure according to the example 2 of the embodiment of the invention;
Fig. 8 is the block diagram according to the home access network discovery of the embodiment of the invention and selection function unit.
Embodiment
Functional overview
In correlation technique, the access network policy that H-ANDSF and V-ANDSF provide to terminal under roaming scence is likely conflict, for this reason, the invention provides a kind of method for transmitting access network policy, in technical scheme of the present invention, the ownership Access Network request message that the HANDSF receiving terminal sends, wherein, carry visited network message flag position in the ownership Access Network request message, visited network message flag position be used for marking terminal whether success and complete reception visit access network request response message; HANDSF sends access network policy according to visited network message flag position to terminal.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
In the following description, for the purpose of explaining, a plurality of specific details have been described, to provide thorough understanding of the present invention.Yet, obviously, in the situation that there are not these specific detail, also can realize the present invention, in addition, in the situation that does not deviate from the spirit and scope that claims illustrate, among following embodiment and the embodiment each details can be carried out various combinations.
Embodiment of the method
According to embodiments of the invention, a kind of method for transmitting access network policy is provided, Fig. 5 is the signaling process figure according to the method for transmitting access network policy of the embodiment of the invention, as shown in Figure 5, comprises following processing (step S502-step S518):
Step S502, UE is linked into the EPC system by 3GPP Access Network or non-3 GPP access network.
Step S504, UE sends visit access network request message to VANDSF, carries the public land Mobile Access Network sign (VPLMNID) of UE ability information (UE Capabilities), UE positional information (UE Location) and visited place in the visit access network request message.
Step S506, VANDSF judges whether the VPLMNID that UE reports equates with the PLMNID of VANDSF this locality, if unequal, then the VANDSF access network policy determining to issue to UE (comprising Access Network information, up-to-date system's shift strategy) is the roaming strategy; If equate, then VANDSF determines that the access network policy that will issue to UE is local policy.
Step S508, positional information and ability information that VANDSF reports according to UE, send visit access network request response message to UE, carry the access network information of the residing visited place of VANDSF and up-to-date system's shift strategy (UpdatedInter-system Mobility Policies) in the message.
Step S510, UE judges according to the visit Access Network request response that receives, if the information completely that UE receives successfully and obtains, then in ownership Access Network request message visited network message flag position being set is 1, otherwise it is 0 that visited network message flag position is set, wherein, visited network message flag position be used for marking terminal whether success and complete reception visit access network request response message, in the present embodiment, preferably, 1 represent successfully and complete reception visit access network request response message, 0 expression successfully receives visit access network request response message.
Step S512, UE sends the home access network request message to HANDSF, carries visited network message flag position, UE ability information (UE Capabilities), UE positional information (UE Location), VPLMNID in the request.
Step S514, HANDSF judge whether the VPLMNID that UE reports equates with the PLMNID of HANDSF this locality.If unequal, then the HANDSF access network policy determining to issue to UE (comprising Access Network information, up-to-date system's shift strategy) is the roaming strategy; If equate, then HANDSF determines that the access network policy that will issue to UE is local policy.
Step S516, HANDSF judges visited network message flag position, if visited network message flag position is 1 (namely, success and complete reception visit access network request response message), the positional information and the ability information that report according to UE of HANDSF then, send to UE home access network request response, wherein, carry the access network information of the access zone network that the other-end current location except access zone network can use in the message; If visited network message flag position is 0 (namely, successfully do not receive visit access network request response message), the positional information and the ability information that report according to UE of HANDSF then, send the response of home access network request message, wherein, carry the access network information (Available Access Network Info) that the UE current location can use and the system's shift strategy (Updated Inter-system Mobility Policies) that upgrades in the message.System's shift strategy of this access network message and renewal comprises access zone network information.
Step S518, UE carry out network and select and switch to determine.Particularly, in the situation that UE does not successfully receive visit access network request response message, the access network policy that UE sends according to HANDSF carries out network and selects and switch to determine; Visit in the situation of access network request response message in UE success and complete reception, UE is merged into elementary tactics with other Access Network information of HANDSF transmission and Access Network information and system's shift strategy of system's shift strategy and VANDSF transmission, and carries out network according to elementary tactics and select and switch to determine.
Below in conjunction with example, technique scheme is elaborated.
Example 1, UE is to the situation of VANDSF acquisition strategy failure.
Fig. 6 is the signaling process figure of the example 1 of the embodiment of the invention, as shown in Figure 6, comprises following processing:
Step S602, UE and VANDSF carry out obtaining visited place access network strategy alternately;
Step S604, owing to visit access network policy response message causes visited place access network strategy to obtain failure without returning or visit the reasons such as the access network policy response message is imperfect, then visited network message identifier position is set is 0 to UE;
Step S606, UE sends the home access network request message to HANDSF, carries in request and is set to 0 visited network message flag position, the ability information (UECapabilities) of UE, positional information (UE Location, the PLMNID of UE;
Step S608, HANDSF judge that visited network message flag position is 0, and then direct strategy with HANDSF adds in the home access network message response; In this example, the strategy of HANDSF is: WLAN/SSID=v, Priority=1; WLAN/SSID=z, Priority=2;
Step S610, HANDSF sends the home access network request response to UE, carries access network policy in the home access network request response;
Step S612, UE directly switch the elementary tactics that determines with the strategy of HANDSF as this locality.
By above-mentioned processing, in the situation that UE is to VANDSF acquisition strategy failure, UE can carry out according to the strategy that HANDSF sends network and select and switch to determine.
Example 2, UE is to the situation of HANDSF acquisition strategy success.
Fig. 7 is the signaling process figure according to the example 2 of the embodiment of the invention, as shown in Figure 7, comprises following processing:
Step S702, UE and VANDSF carry out obtaining visited place access network strategy alternately;
Step S704, visit access network strategy obtains successfully, and then to put visited network message identifier position be 1 to UE; In this example, the visited place access network strategy that UE obtains is: WLAN/SSID=v, Priority=1; WLAN/SSID=z, Priority=2;
Step S706, UE sends the home access network request message to HANDSF, carries in the request and is set to 1 visited network message flag position, the ability information (UECapabilities) of UE, the positional information (UE Location) of UE, PLMNID;
Step S708, HANDSF judges that visited network message flag position is 1, and then the strategy with other visited places except the visited place adds in the home access network message response, in this example, the local policy of HANDSF is: WLAN/SSID=z, Priority=1; WLAN/SSID=v, Priority=2; WLAN/SSID=y, Priority=3, then HANDSF need to be with WLAN/SSID=y, and Priority=3 adds in the home access network message response;
Step S710, HANDSF sends the home access network request response to UE;
Third party's strategy that the strategy of the visited place that step S712, UE directly send VANDSF and HANDSF send is synthetic as the local elementary tactics that determines that switches; In this example, the synthetic result of strategy is among step S704 and the step S708: WLAN/SSID=v, Priority=1; WLAN/SSID=z, Priority=2; WLAN/SSID=y, Priority=3.
By above-mentioned processing, the strategy of the visited place that terminal can send VANDSF and third party's strategy that HANDSF sends are synthetic as the local elementary tactics that determines that switches.
Device embodiment
According to embodiments of the invention, a kind of home access network discovery and selection function unit are provided, Fig. 8 is the block diagram according to the home access network discovery of the embodiment of the invention and selection function unit, as shown in Figure 8, home access network discovery and the selection function unit according to the embodiment of the invention comprises: receiver module 80, sending module 82.Below, the above-mentioned modules in the embodiment of the invention is described in detail.
Particularly, receiver module 80 is used for the ownership Access Network request message that receiving terminal sends, and wherein, carries visited network message flag position in the described ownership Access Network request message.
Particularly, before receiver module 80 is used for the ownership Access Network request message of receiving terminal transmission, UE at first needs to judge according to the visit Access Network request response that the VANDSF that receives sends, if UE receives the information completely of successfully visiting Access Network request response and acquisition, then in ownership Access Network request message visited network message flag position being set is 1, otherwise it is 0 that visited network message flag position is set, wherein, visited network message flag position be used for marking terminal whether success and complete reception visit access network request response message, in the present embodiment, preferably, 1 represent successfully and complete reception visit access network request response message, 0 expression successfully receives visit access network request response message.
After receiver module 80 had received ownership Access Network request message, the sending module 82 among the HANDSF just can send access network policy to terminal according to visited network message flag position.
Particularly, at first, HANDSF need to judge whether the VPLMNID that UE reports equates with the PLMNID of HANDSF this locality.If unequal, then the HANDSF access network policy determining to issue to UE (comprising Access Network information, up-to-date system's shift strategy) is the roaming strategy; If equate, then HANDSF determines that the access network policy that will issue to UE is local policy.
Subsequently, HANDSF judges visited network message flag position, if visited network message flag position is 1 (namely, success and complete reception visit access network request response message), the positional information and the ability information that report according to UE of the sending module among the HANDSF 82 then, send to UE home access network request response, wherein, carry the access network information of the access zone network that the other-end current location except access zone network can use in the message; If visited network message flag position is 0 (namely, successfully do not receive visit access network request response message), the positional information and the ability information that report according to UE of the sending module among the HANDSF 82 then, send the response of home access network request message, wherein, carry the access network information (Available Access NetworkInfo) that the UE current location can use and the system's shift strategy (Updated Inter-system MobilityPolicies) that upgrades in the message.System's shift strategy of this access network message and renewal comprises access zone network information.
In sum, by means of technical scheme of the present invention, by in ownership Access Network request message, carrying visited network message flag position, solved in the correlation technique problem that H-ANDSF and V-ANDSF provide to terminal under roaming scence access network policy is likely conflict, made terminal carry out access network selection and to switch determining according to the access network policy that receives smoothly.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, perhaps they are made into respectively each integrated circuit modules, 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 modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method for transmitting access network policy is characterized in that, described method comprises:
The ownership Access Network request message that home access network discovery and selection function unit HANDSF receiving terminal send, wherein, carry visited network message flag position in the described ownership Access Network request message, described visited network message flag position be used for identifying described terminal whether success and complete reception visit access network request response message;
Described HANDSF sends access network policy according to described visited network message flag position to described terminal;
In the situation that described terminal does not successfully receive described visit access network request response message, the described access network policy that described terminal sends according to described HANDSF carries out network and selects and switch to determine;
In the situation of the successful and complete described visit access network request of the reception response message of described terminal, described terminal is merged into elementary tactics with described the HANDSF described access network policy that sends and the access network policy of visiting access network discovery and selection function unit VANDSF transmission, and carries out the network selection and switch decision according to described elementary tactics.
2. method according to claim 1 is characterized in that, described access network policy comprises: Access Network information, system's shift strategy.
3. method according to claim 2 is characterized in that, described HANDSF receives before the ownership Access Network request message of described terminal transmission, and described method also comprises:
Described terminal sends visit access network request message to visit access network discovery and selection function unit VANDSF, wherein, carry positional information and the public land Mobile Access Network sign of the ability information of described terminal, described terminal in the described visit access network request message;
Described VANDSF sends visit access network request response message according to described ability information and described positional information to described terminal, wherein, carry access network information and system's shift strategy of the visited place at described VANDSF place in the described visit access network request response message;
Described terminal receives described visit access network request response message, and described visited network message flag position is set.
4. method according to claim 3 is characterized in that, described terminal receives described visit access network request response message, and described visited network message flag position is set comprises:
In the situation of the successful and complete described visit access network request of the reception response message of described terminal, the described visited network message flag position in the described ownership Access Network of the described terminal request message is set to successfully receive described visit access network request response message;
In the situation that described terminal does not successfully receive described visit access network request response message, the described visited network message flag position in the described ownership Access Network of the described terminal request message is set to successfully not receive described visit access network request response message.
5. method according to claim 4 is characterized in that, described VANDSF sent visit access network request response message to described terminal before, described method also comprised:
Described VANDSF judges whether described public land Mobile Access Network sign is identical with the public land Mobile Access Network sign of described VANDSF this locality;
Judge that at described VANDSF the described access network policy that then sends to described terminal is local policy in the described public land Mobile Access Network sign situation identical with the public land Mobile Access Network sign of described VANDSF this locality;
Judge that at described VANDSF in the described public land Mobile Access Network sign situation not identical with the public land Mobile Access Network sign of described VANDSF this locality, the described access network policy that then sends to described terminal is the roaming strategy.
6. method according to claim 5 is characterized in that, also carries described ability information, described positional information, described public land Mobile Access Network sign in the described ownership Access Network request message.
7. method according to claim 6 is characterized in that, described HANDSF sends access network policy according to described visited network message flag position to described terminal and comprises:
Described HANDSF determines that described visited network message flag position is for successfully receiving described visit access network request response message, and send the home access network request response according to described positional information to described terminal, wherein, carry access network information and system's shift strategy of other visited places that the described terminal current location except the access zone network at described VANDSF place can use in the described home access network request response;
Described HANDSF determines that described visited network message flag position is not for successfully receiving described visit access network request response message, and send the home access network request response according to described positional information to described terminal, wherein, carry access network information and system's shift strategy of the visited place that described terminal current location can use in the described home access network request response.
8. method according to claim 7 is characterized in that, before described HANDSF sent the home access network request response to described terminal, described method also comprised:
Described HANDSF judges whether described public land Mobile Access Network sign is identical with the public land Mobile Access Network sign of described HANDSF this locality;
Judge that at described HANDSF the described access network policy that then sends to described terminal is local policy in the described public land Mobile Access Network sign situation identical with the public land Mobile Access Network sign of described HANDSF this locality;
Judge that at described HANDSF in the described public land Mobile Access Network sign situation not identical with the public land Mobile Access Network sign of described HANDSF this locality, the described access network policy that then sends to described terminal is the roaming strategy.
9. method according to claim 8 is characterized in that, described HANDSF according to described visited network message flag position after described terminal sends the home access network request response, described method also comprises:
Described terminal is carried out network according to described access network policy and is selected and switch to determine.
10. a home access network discovery and selection function unit HANDSF is characterized in that, comprising:
Receiver module, be used for the ownership Access Network request message that receiving terminal sends, wherein, carry visited network message flag position in the described ownership Access Network request message, described visited network message flag position be used for identifying described terminal whether success and complete reception visit access network request response message;
Sending module is used for sending access network policy according to described visited network message flag position to described terminal;
Wherein, in the situation that described terminal does not successfully receive described visit access network request response message, the described access network policy that described terminal sends according to described HANDSF carries out network and selects and switch to determine; In the situation of the successful and complete described visit access network request of the reception response message of described terminal, described terminal is merged into elementary tactics with described the HANDSF described access network policy that sends and the access network policy of visiting access network discovery and selection function unit VANDSF transmission, and carries out the network selection and switch decision according to described elementary tactics.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910127790 CN101730188B (en) | 2009-03-24 | 2009-03-24 | Method for transmitting access network policy and home access network discovery and selection functional unit |
| PCT/CN2009/073706 WO2010108352A1 (en) | 2009-03-24 | 2009-09-02 | Method for sending access network policies and home access network discovery and support functions unit |
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| CN 200910127790 CN101730188B (en) | 2009-03-24 | 2009-03-24 | Method for transmitting access network policy and home access network discovery and selection functional unit |
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| FR2949634B1 (en) * | 2009-09-02 | 2012-12-28 | Alcatel Lucent | METHOD OF NOTIFYING IN A WIRELESS COMMUNICATION NETWORK |
| WO2011109983A1 (en) * | 2010-07-21 | 2011-09-15 | 华为技术有限公司 | Method for processing policy, access network discovery and selection function (andsf) and user equipment (ue) |
| WO2012065293A1 (en) * | 2010-11-15 | 2012-05-24 | 华为技术有限公司 | Service access control method, device and user equipment |
| CN102752833A (en) * | 2011-04-22 | 2012-10-24 | 中兴通讯股份有限公司 | Method and system for selecting gateway |
| CN104798414B (en) * | 2012-09-13 | 2018-10-19 | 华为技术有限公司 | System and method for dual-mode network selection |
| US20140187252A1 (en) * | 2012-12-27 | 2014-07-03 | Vivek G. Gupta | Distributed policy architecture |
| CN103945493B (en) * | 2013-01-17 | 2018-09-21 | 中兴通讯股份有限公司 | Select V-ANDSF method and devices, access network access method and device |
| GB2509936A (en) * | 2013-01-17 | 2014-07-23 | Broadcom Corp | Network selection |
| WO2014153766A1 (en) | 2013-03-29 | 2014-10-02 | 华为技术有限公司 | Policy converging method, ue, and server |
| EP2979497B1 (en) * | 2013-03-29 | 2018-09-05 | Intel Corporation | Techniques for wireless network discovery and selection support |
| CN103781087A (en) * | 2014-01-06 | 2014-05-07 | 联想(北京)有限公司 | Information processing method and mobile terminal |
| CN105554753B (en) * | 2015-11-27 | 2019-01-04 | 北京博思汇众科技股份有限公司 | Mobile communications network access system and method |
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| WO2010108352A1 (en) | 2010-09-30 |
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