CN103813415B - Network insertion and tactful sending method and equipment - Google Patents
Network insertion and tactful sending method and equipment Download PDFInfo
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- CN103813415B CN103813415B CN201210460816.3A CN201210460816A CN103813415B CN 103813415 B CN103813415 B CN 103813415B CN 201210460816 A CN201210460816 A CN 201210460816A CN 103813415 B CN103813415 B CN 103813415B
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Abstract
The embodiment of the invention discloses a kind of network insertion and tactful sending method and equipment, are related to wireless communication field, for solving the problems, such as terminal how access network when access network discovery and selection function ANDSF strategy are with HS policy conflicts.In this programme, terminal is when the HS strategies of available wireless access network WLAN access networks are with ANDSF policy conflicts, the new ANDSF not conflicted with HS strategies is obtained from ANDSF servers tactful, enable the terminal to according to new ANDSF policy selection access network and accessed, so as to solve the problems, such as terminal how access network when ANDSF strategies are with HS policy conflicts.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of network insertion and tactful sending method and equipment.
Background technology
Third generation partner program（The Third Generation Partnership Project, 3GPP）Definition
Support that UE carries out access network discovery and the access network discovery for selecting and selection function（Access Network
Discovery and Selection Function, ANDSF）Function, Wireless Fidelity（Wireless fidelity, Wi-Fi）
Alliance（Wi-Fi Alliance, WFA）Define support user terminal（User Equipment, UE）Carry out access network selection
Focus（Hotspot）2.0 specification.UE can be simultaneously from ANDSF servers and broadcasting server（advertisement
server）Receive and WLAN（Wireless Local Area Network, WLAN）The related strategy of access network,
At this moment it is possible that conflicting situation between the strategies that receive from different servers of UE, is described as follows.
In order to support that UE performs access network discovery and selection in the network environment that various access networks coexist, 3GPP is fixed
Justice ANDSF functions.When UE is in non-roaming state, the framework of ANDSF is as shown in Figure 1.
ANDSF can provide cross-system shift strategy to UE（Inter-system mobility policy, ISMP）, access
Network finding information（Access Network Discovery Information, ANDI）And cross-system routing policy
（Inter-System Routing Policy, ISRP）, these information are introduced in detail below.
For cross-system shift strategy（Inter-system mobility policy, ISMP）：
When UE can only use a wave point routing ip traffic in synchronization, UE is determined using cross-system shift strategy
Set the goal access network.May have pre-configured cross-system shift strategy in UE, ANDSF can also under the triggering of network or
It is that the cross-system shift strategy in UE is updated according to the request of UE.
Cross-system shift strategy provides following information to UE：
UE accesses evolution block core net（Evolved Packet Core, EPC）When, the highest priority that can be used
Access technology type or specific access network；
Allow/limit UE to perform the condition that cross-system is moved, such as time and position；
When execution automatically accesses network to be selected, whether the access network or access technology type favorites list of operator compare
The priority of corresponding user preferences list is high.
The ISMP strategies that ANDSF is handed down to UE are regular including one or more, include the description below per rule：
a）Rule prioritization：The priority of certain rule is represented, when there is many rules effective in UE, UE the use priorities
Highest rule；
b）Preferred access network network：UE should prioritizing selection one or more access networks information, including access technology
With access network mark etc. information；
c）Effective coverage：Represent the rule effectively band of position, it is possible to use 3GPP, 3GPP2, WLAN, WiMAX network position
Put or geographical coordinate is determining a specific region, when only UE is located in the specific region of node description, UE can
Using corresponding rule；
d）Roaming state：The rule is defined suitable for roaming scence or non-roaming scene.
e）PLMN（Public Land Mobile Network, PLMN）, represent the fortune for creating the rule
The PLMN codes of battalion business；
f）Time restriction：Time restriction when representing rule effectively, residing for only UE, the current time in time zone is at the date
Between（TimeOfDay）When in the time period that node is represented, rule is just effectively.
g）More New Policy：Show whether UE needs active request to update ISMP tactful.
For access network discovery information（Access Network Discovery Information, ANDI）：
When UE is asked, ANDSF provides the information of available access network around which to UE.If UE is in request message
In define specific access technology, then the specific access technology that ANDSF is only returned around which to UE and asked using UE
Access network information.The access network discovery information that UE is preserved and provided using ANDSF, until the information is updated or UE
Receive new access network discovery information.
Access network discovery information includes the description below：
a）The information of the available access networks of UE, including radio access technology types（Such as WLAN, WiMAX）Wirelessly connect
Enter network identifier（The SSID of such as WLAN）.
b）Other information related to access technology, such as one or more carrier frequencies.
c）UE locations when the access network discovery information of condition for validity, i.e. ANDSF offer is effective, condition for validity can
To be 3GPP, 3GPP2, WLAN, WiMAX network position or specific geographical position, only UE is located at the scope of node description
When interior, the ANDI information that ANDSF is provided is just effectively.
d）The PLMN codes of the operator of access network discovery information are issued to UE.
For cross-system routing policy（ISRP, Inter-System Routing Policy）：
When UE can pass through multiple radio access interface routing ip traffics simultaneously, in order to meet operator's route/shunting
Hobby, UE is judged using cross-system routing policy can not when specific IP stream or the IP stream related to specific APN is route
Access technology type/the access network for using；When UE routes meet the IP flows of specified conditions（For example with particular access point name
（Access Point Name, APN）Related all flows, belong to all flows of specific IP streams）When, UE uses cross-system
Routing policy selects most suitable access technology/access network.No matter whether UE has passes through multiple radio access interfaces simultaneously
The ability of routing ip traffic, ANDSF all may send cross-system routing policy list to UE.May have pre-configured interdepartmental in UE
System routing policy, ANDSF may update the cross-system routing policy in UE under the triggering of network or under the request of UE.
ANDSF is handed down to the cross-system routing policy of UE includes the description below：
a）With IP flow mobilities（IP Flow Mobility, IFOM）One or more related filtering rules（filter
rules）.Each filter rule includes the description below：
IP stream description information：Including source IP address scope, purpose IP address scope, source port number scope, destination slogan
The information such as scope, IP address type；
The condition for validity of rule：The restricted information of UE present positions, temporal information and APN during including rule effectively.Position
Put restricted information and a specific area can be determined using 3GPP, 3GPP2, WLAN, WiMAX network position or geographical coordinate
When domain, only UE are located at the specific region, corresponding rule is just effectively.Temporal information includes regular effectively initial time and end
Only time, when the current time in time zone residing for only UE is within the time period that TimeOfDay nodes are represented, rule is just effective.Such as
Effectively restrictive condition includes APN to fruit rule, then illustrate that the rule is only applicable to the IP stream related to the APN；
Routing rule：UE should prioritizing selection one or more access networks information, including access technology and access
The information such as network identity.When UE performs certain rule, UE is selected according to corresponding routing rule and is connected to an access network
Network, is then routed to the IP streams of the IP stream description information match regular with this in access network；
The precedence information of rule：When ISRP strategies include many rules, UE the use priorities highest rule.
b）It is connected with multiple access PDN（Multi Access PDN Connectivity, MAPCON）Related one or many
Individual filter rules.Each filter rule includes the description below：
APN：The rule is suitable for all of IP stream related to the APN；
The condition for validity of rule：The restricted information and temporal information of UE present positions during including rule effectively.Position limitation
Information can determine a specific region using 3GPP, 3GPP2, WLAN, WiMAX network position or geographical coordinate, only
When UE is located at the specific region, corresponding rule is just effectively.Temporal information includes regular effectively initial time and termination time,
When the current time in time zone residing for only UE is within the time period that TimeOfDay nodes are represented, rule is just effective；
Routing rule：UE should prioritizing selection one or more access networks information, including access technology and access
The information such as network identity.When UE performs certain rule, UE is selected according to corresponding routing rule and is connected to an access network
Network, is then routed to the APN identical IP streams that APN is included with the rule in the access network；
The precedence information of rule：When ISRP strategies include many rules, UE the use priorities highest rule.
c）With non-seamless WLAN shunt（Non-Seamless WLAN Offload, NSWO）One or more related
filter rules.Each filter rule includes the description below：
IP stream description information：Including source IP address scope, purpose IP address scope, source port number scope, destination slogan
The information such as scope, IP address type；
The condition for validity of rule：The restricted information of UE present positions, temporal information and APN during including rule effectively.Position
Put restricted information and a specific area can be determined using 3GPP, 3GPP2, WLAN, WiMAX network position or geographical coordinate
When domain, only UE are located at the specific region, corresponding rule is just effectively.Temporal information includes regular effectively initial time and end
Only time, when the current time in time zone residing for only UE is within the time period that TimeOfDay nodes are represented, rule is just effective.Such as
Effectively restrictive condition includes APN to fruit rule, then illustrate that the rule is only applicable to the IP stream related to the APN；
Routing rule：UE should prioritizing selection one or more WLAN access networks mark；
The precedence information of rule：When ISRP strategies include many rules, UE the use priorities highest rule.
d）Roaming（Roaming）Information：The rule is defined suitable for roaming scence or non-roaming scene.
e）PLMN：Represent the PLMN codes for creating the regular operator；
f）More New Policy（UpdatePolicy）：Show whether UE needs active request to update ISMP tactful.
In order to support that UE selects suitable WLAN access networks, WFA is in Institute of Electrical and Electric Engineers（Institute
Of Electrical and Electronics Enfineers, IEEE）Define on the basis of the 802.11u specifications of definition
2.0 specifications of Hotspot.
Support that the information of the retrievable WLAN access networks of UE of 2.0 specifications of Hotspot is as follows：
Place name information：With Basic Service Set（Basic Service Set, BSS）0 related or multiple place names
Claim, while type of the element also including place, such as wlan network in library；
Network authentication type information：Comprising auth type list information, such as online registration, network requirement user receives bar
Money and treaty etc.；
The list of roaming alliance：Storage is deployed through the access point（Access Point, AP）The roaming of addressable network
Alliance and/or signing service operator（SSP, Subscription Service Provider, SSPs）, wherein roaming alliance
It is made up of one group of SSPs, between these SSPs, has signed roaming agreement；
IP address type available information：The information Store is that, after UE is associated with AP foundation, AP can be UE distribution
IP address version and type；
Network access identifier（Network Access Identifier, NAI）Domain list：The list is stored and is passed through
The NAI of the network that specific AP can access；
3GPP cellular network informations：The information of storage cellular network, such as network broadcast information（Such as network code and state
Family's code）, 3GPP UE can use the access network request agreement（Access Network Query Protocol, ANQP）Unit
Element selects an AP for being connectable to 3GPP networks.What the element was stored is the information of PLMN at present；
Domain name list：One or more domain names of the entity of 802.11 access networks of IEEE are runed in storage；
HS request lists：When UE sends HS ANQP Query, generic advertisement business（generic advertisement
Service, GAS）Inquiry request（Query Request）HS request lists are included in message, the HS of the list storage UE requests
The identifier of 2.0ANQP elements.GAS Query Request message can include ANQP request lists simultaneously（Query list）With
HS 2.0Query list；
HS capabilities lists：Comprising be the supported information/abilities of AP list.When AP replys GASQuery Request
During message, AP includes HS capabilities lists in replying message；
Operator's friendly name：0 or multiple titles of the operator of storage operation 802.11 access networks of IEEE；
WAN metrics（metrics）：Link between storage connection 802.11 access networks of IEEE and Internet
Transmission characteristic, the information such as the transfer rate of such as link and load.If AP cannot know the numerical value of correlation, AP is by correlation
The value of field is set to 0；
Concatenation ability：Show the connection status in hotspot in the form of communication protocol and port numbers.Wherein communication protocol
Refer to the IP protocol fields in IPv4 packets and the next frame head in IPv6 packets（next header）Field.End
Slogan refers to destination slogan.Network may the open or close transmission flow related to specific communication protocol and port numbers
Function, i.e. fire wall or nat feature allow or prevent this kind of communication；
NAI locals domain request：UE has the NAI locals domain name of safety certificate comprising which in the domain request element of NAI locals,
AP will return a NAI domain name list, and the domain matched with the domain name in the domain request element of NAI locals is only included in the list
Name；
Class of operation is pointed out：What the element was stored is the information of the channel that Wi-Fi access networks are used.
It is tactful that the information of the WLAN access networks that below 2.0 specifications of Hotspot are defined is referred to as HS.
Some IP streams are switched to WLAN accesses according to ANDSF strategy decisions by UE, and one according to ANDSF policy selection
Individual WLAN is accessed.UE obtains the relevant information that the WLAN is accessed according to 2.0 specifications of Hotspot, and UE is according to concatenation ability information
Draw WLAN access restrictions transmission ANDSF0 it is tactful described in the IP for needing to be switched to WLAN accesses flow.Therefore occur in that
The problem of policy conflict.
During the present invention is realized, there is following technical problem in finding prior art in inventor：
ANDSF and Hotspot 2.0 is used for WLAN to the strategy that UE is provided and accesses selection, but the process generated strategy is
Separate, so there is the situation of conflict between two sets for finally making are tactful.Therefore, when there is policy conflict, need
Want a kind of mechanism to solve the problem, more preferable service experience is provided to be embodied as UE.
The content of the invention
The embodiment of the present invention provides a kind of network insertion and tactful sending method and equipment, for solving terminal in ANDSF
Strategy and the how problem of access network during HS policy conflicts.
A kind of method for network access, the method include：
Terminal determines optional WLAN WLAN according to the access network discovery and selection function ANDSF strategy for obtaining
Access network, chooses available WLAN access networks from optional WLAN access networks；
The HS that terminal obtains each available WLAN access network is tactful, and determines each available WLAN access network
HS strategies whether with the ANDSF policy conflicts；
If it is tactful to there is no the HS not conflicted with ANDSF strategies, terminal obtains new from ANDSF servers
ANDSF is tactful；
Terminal is according to the new ANDSF policy selection access networks, and accesses the access network of selection.
A kind of access network discovery and selection function ANDSF strategy sending method, the method include：
The policy update request message that ANDSF servers receiving terminal sends；
It is tactful that ANDSF servers make new ANDSF according to the policy update request message；
ANDSF servers return policy update request to terminal and reply message, and the policy update request is taken in replying message
It is tactful with the new ANDSF.
A kind of terminal, the terminal include：
Unit is chosen, and for optional WLAN access networks being determined according to the ANDSF strategies for obtaining, is connect from optional WLAN
Available WLAN access networks are chosen in entering network；
Determining unit, the HS for obtaining each available WLAN access network are tactful, and determine each available WLAN
The HS strategies of access network whether with the ANDSF policy conflicts；
Acquiring unit, for when not having tactful with the ANDSF HS that do not conflict of strategy, obtaining from ANDSF servers
Take new ANDSF tactful；
Access unit, for according to the new ANDSF policy selection access networks, and accesses the access network of selection.
A kind of ANDSF servers, the ANDSF servers include：
Receiving unit, for the policy update request message that receiving terminal sends；
Unit is formulated, it is tactful for making new ANDSF according to the policy update request message；
Feedback unit, replies message for returning policy update request to terminal, during the policy update request is replied message
Carry the new ANDSF tactful.
In scheme provided in an embodiment of the present invention, terminal determines optional WLAN according to the ANDSF strategies for obtaining
WLAN access networks, choose available WLAN access networks from optional WLAN access networks；Obtain each available WLAN
The HS of access network is tactful, and determine the HS strategies of each available WLAN access network whether with the ANDSF policy conflicts；
Do not exist the HS not conflicted with ANDSF strategy it is tactful when, terminal obtains new tactful with HS do not conflict from ANDSF servers
ANDSF is tactful, then according to new ANDSF policy selection access networks, and accesses the access network of selection.It can be seen that, this programme
In to obtain the ANDSF that with HS strategy do not conflict of new from ANDSF servers by terminal tactful so that terminal can be according to new
ANDSF policy selection access network is simultaneously accessed, and in new ANDSF strategies ineffectives, terminal can select to connect according to other specification
Enter network, such as user preferences etc., how access network is asked when ANDSF strategies are with HS policy conflicts so as to solve terminal
Topic.
Description of the drawings
Fig. 1 be UE of the prior art be in non-roaming state when ANDSF configuration diagrams；
Fig. 2 is method flow schematic diagram provided in an embodiment of the present invention；
Fig. 3 is other method schematic flow sheet provided in an embodiment of the present invention；
Schematic flow sheets of Fig. 4 a for the embodiment of the present invention one；
Fig. 4 b are the process schematic of the new ANDSF strategies of UE and ANDSF interaction acquisitions in the embodiment of the present invention one；
Fig. 4 c are the network coverage situation schematic diagram of UE present positions in the embodiment of the present invention two；
Fig. 4 d are the interaction schematic diagram of UE and ANDSF in the embodiment of the present invention two；
Fig. 4 e are the wlan network coverage condition schematic diagram of UE present positions in the embodiment of the present invention three；
Fig. 4 f are the network coverage situation schematic diagram of UE present positions in the embodiment of the present invention four；
Fig. 4 g are UE internal processes schematic diagrams in the embodiment of the present invention four；
Fig. 5 is terminal structure schematic diagram provided in an embodiment of the present invention；
Fig. 6 is ANDSF server architectures schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order to solve the problems, such as terminal how access network when ANDSF strategies are with HS policy conflicts, the embodiment of the present invention
A kind of method for network access is provided.
Referring to Fig. 2, method for network access provided in an embodiment of the present invention is comprised the following steps：
Step 20：Terminal determines optional WLAN access networks according to the ANDSF strategies for obtaining, and accesses from optional WLAN
Available WLAN access networks are chosen in network；Here, available WLAN access networks for terminal can search its signal and
The WLAN access networks that terminal can access；
Step 21：The HS that terminal obtains each available WLAN access network is tactful, and determines that each available WLAN connects
Enter the HS strategies of network whether with the ANDSF policy conflicts；Here, the WLAN access networks for Hotspot2.0 specifications being defined
It is tactful that information is referred to as HS；
Step 22：When the HS not existed with the ANDSF strategies do not conflict is tactful, terminal obtains new from ANDSF servers
It is tactful with the HS ANDSF that do not conflict of strategy；
Step 23：Terminal is according to new ANDSF policy selection access networks, and accesses the access network of selection.
In step 20, terminal determines optional WLAN access networks according to the ANDSF strategies for obtaining, and implementing can be as
Under：
When ANDSF strategies do not provide the identification information of WLAN access networks, terminal determines optional WLAN access networks
For any one WLAN access network；
When ANDSF strategies provide the identification information of WLAN access networks, terminal determines optional WLAN access networks
For WLAN access networks corresponding to the identification information.
In step 21, determine the HS strategies of each available WLAN access network whether with ANDSF policy conflicts, it is concrete real
Now can be as follows：
For each available WLAN access network, terminal is tactful according to the HS of the available WLAN access networks, judges
The available WLAN access networks whether limit transmit the ANDSF it is tactful described in need be switched to WLAN access networks
IP flows, if, it is determined that HS strategies and ANDSF policy conflicts of the available WLAN access networks, otherwise, it determines this is available
WLAN access networks HS strategy not with the ANDSF policy conflicts.
Concatenation ability is an information of HS strategies, and it indicates the transmission which IP stream wlan network can prevent, for example
WLAN-1 prevents the transmission of IP flow1 and IP flow2, and ANDSF strategies may indicate that UE by IP flow1 and IP flow3
It is transferred to WLAN-1, therefore occurs in that the situation of policy conflict, concatenation ability and ANDSF plan of the policy conflict for wlan network
Slightly conflict, this is only possible to a kind of form of the policy conflict for occurring, other WLAN access networks of 2.0 specifications of Hotspot definition
The information of network is likely to and ANDSF policy conflicts, and the form of other policy conflicts is also within the scope of the present invention.
In step 22, it is determined whether the method that there is the HS strategies not conflicted with ANDSF strategies specifically can be as follows：
For each available WLAN access network, terminal if it is determined that the available WLAN access networks HS strategy with should
ANDSF policy conflicts, then by the identification information storage of the available WLAN access networks in first list, otherwise, can by this
The identification information storage of WLAN access networks is in second list；
If second list is sky, it is determined that it is tactful to there is no the HS not conflicted with ANDSF strategy, otherwise, it determines presence
It is tactful with the ANDSF HS that do not conflict of strategy, and WLAN access networks corresponding to the identification information that stores in second list
It is WLAN access networks corresponding with the HS strategies that the ANDSF strategies do not conflict.
Further, if existing, the HS not conflicted with ANDSF strategies is tactful, and terminal is tactful with the ANDSF not from each
A WLAN access network is selected in the corresponding WLAN access networks of HS strategies of conflict, and accesses the WLAN access networks of selection
Network.
Here, a WLAN is selected from each WLAN access network corresponding with the HS strategies that ANDSF strategies do not conflict
Access network, implementing can be as follows：Terminal is accessed according to each WLAN corresponding with the HS strategies that ANDSF strategies do not conflict
At least one of the precedence information of network, signal intensity, load state information, chooses according to access network set in advance
Rule, selects a WLAN access network from each WLAN access network corresponding with the HS strategies that ANDSF strategies do not conflict,
Most strong WLAN access networks of signal intensity etc. are chosen such as.
In step 22, terminal is tactful from the new ANDSF of ANDSF servers acquisition, and implementing can be as follows：
Terminal updates request message to ANDSF servers sending strategy, carries the terminal in the policy update request message
Identification information, the positional information of the terminal, the identification information of available WLAN access networks and corresponding HS strategies, and HS
Policy conflict information；
Terminal receives the policy update request of ANDSF server feedbacks and replies message, and the policy update request is replied message
It is middle to carry tactful according to the new ANDSF of the parameter information formulation in the policy update request message.
In order that ANDSF servers can to provide the terminal with the new ANDSF not conflicted with HS strategies tactful, so as to solve
Certainly terminal how problem of access network when ANDSF strategies are with HS policy conflicts, the embodiment of the present invention provide a kind of ANDSF plans
Omit sending method.
Referring to Fig. 3, ANDSF strategies sending method provided in an embodiment of the present invention is comprised the following steps：
Step 30：The policy update request message that ANDSF servers receiving terminal sends；
Step 31：It is tactful that ANDSF servers make new ANDSF according to policy update request message；
Step 32：ANDSF servers return policy update request to terminal and reply message, and the policy update request reply disappears
The new ANDSF is carried in breath tactful.
Specifically, following information is carried in policy update request message：The identification information of the terminal, the position letter of the terminal
Breath, the identification information of available WLAN access networks and corresponding HS strategy, and HS policy conflict informations；
Now, in step 31 ANDSF servers to make new ANDSF according to policy update request message tactful, specifically
Implementation method can be as follows：
ANDSF servers are other access networks that terminal selects access technology not to be WLAN, formulate new ANDSF plans
Slightly, it is used to route the stream description letter of the ANDSF strategies for conflicting comprising selected other access networks during the new ANDSF is tactful
The limited IP streams of breath；Or,
ANDSF servers are that to select access technology be WLAN to terminal, and formulate that new ANDSF is tactful, the new ANDSF plans
Do not include in the slightly IP streams limited by the stream description information of the mark comprising WLAN access networks and the new ANDSF strategies
The IP streams of the WLAN access networks route that the new ANDSF strategies are provided can not be passed through, i.e., all IP streams in stream description information
The WLAN access networks route that the new ANDSF strategies are provided can be passed through；Or, do not include during the new ANDSF is tactful
The mark of WLAN access networks only shows the stream description that the access technology for routeing IP streams is WLAN and the new ANDSF strategies
The IP streams limited by information can pass through any one optional WLAN access networks transmission of terminal surrounding.
Here, ANDSF servers determine the available access network of terminal surrounding according to the positional information of terminal, then true again
Determine other access networks whether terminal surrounding has access technology not to be WLAN.
With reference to specific embodiment, the present invention will be described：
Embodiment one：
When UE is according to ANDSF strategies and local policy（Such as user preferences, access history etc.）Determine some are specific
When IP streams are switched to WLAN access networks, UE draws the information of optional WLAN access networks according to ANDSF strategies.Due to
The granularity of ANDSF strategies is different, so UE is different according to the information that ANDSF strategies are obtained：
ANDSF strategies only limit destination access technologies and access for WLAN, then UE understands that optional WLAN access networks are
Any one WLAN access network；
ANDSF strategies not only limit destination access technologies and access for WLAN, and provide one or more to UE
The precedence information of the mark of WLAN access networks and these WLAN access networks, then UE can obtain a WLAN access network
Priority list, the list include the identification information and precedence information of the WLAN access networks that ANDSF strategies are provided, these marks
WLAN access networks representated by knowledge information are optional WLAN access networks.
Will be in optional WLAN access networks around the UE and the WLAN access networks that can access of UE are used as available
WLAN access networks, UE can determine available WLAN access networks using existing method.If do not existed around UE available
WLAN access networks, then the processing method of UE compared with processing method.
After UE obtains the information of available WLAN access networks, the processing procedure of UE is as shown in fig. 4 a：
Step 1：The HS that UE obtains each available WLAN access network is tactful；
Step 2：The HS strategies and ANDSF for contrasting each available WLAN access network is tactful, according to HS strategies and ANDSF
The content of strategy judges whether conflict therebetween；
Step 3：According to comparing result, the WLAN access networks that HS strategies and ANDSF strategies do not conflict are judged whether,
If so, step 6 is then arrived, otherwise, to step 4；
Step 4：UE is tactful to obtain new ANDSF with ANDSF server interactions；
Step 5：According to new ANDSF policy selection access networks, and the access network of selection is accessed, this flow process terminates；
Step 6：The access network of optimum is selected in the WLAN access networks that UE does not conflict from HS strategies and ANDSF strategies,
Specific selection mechanism is depending on the algorithm realization inside UE, such as signal intensity, load shape of the UE according to WLAN access networks
The precedence information that condition and ANDSF are provided（Only ANDSF provides the identification information and precedence information of WLAN access networks
When just consider the parameter）An optimum WLAN access network is selected etc. parameter；
Step 7：UE accesses the WLAN access networks of the optimum of its selection, and this flow process terminates.
In step 4 UE and ANDSF server interactions with obtain new ANDSF strategies detailed process as shown in Figure 4 b：
Step 1：UE updates request message, the ginseng carried in policy update request message to ANDSF servers sending strategy
Number includes：The mark of UE, the position of UE, the mark of available WLAN access networks and HS strategy, ANDSF strategies and HS strategy punchings
Prominent information；
Step 2：After ANDSF servers receive the policy update request message of UE, according to policy update request message
In parameters information, available Radio Access Network around the CAMEL-Subscription-Information of UE and UE, reformulate new ANDSF
Strategy, then to UE return policy update request reply message, policy update request reply message it is middle carrying parameter include it is new
ANDSF is tactful.
Embodiment two：
The embodiment is used for explanation when the HS strategies and ANDSF policy conflicts of all available WLAN access networks of UE
When, the process of resolution policy conflict.
Scene description：
As illustrated in fig. 4 c, according to Fig. 4 c, the wireless access technology that UE can be used has for the network coverage of UE present positions
E-UTRAN, WLAN and WiMAX.
UE supports above-mentioned 3 kinds of wireless access technologys, and can simultaneously using relative with above-mentioned 3 kinds of wireless access technologys respectively
The wave point answered, all of data traffic of current UE are all route from E-UTRAN.
There is an ANDSF strategy in UE effectively, the ANDSF strategies show that UE needs a part of flow switch is connect to WLAN
Enter network（ANDSF strategies only limit access technology, and without limiting specific WLAN access networks mark, this shows that UE can
Select any one WLAN access network）.
WLAN access networks around UE are designated WLAN_1 and WLAN_2, then the available WLAN access networks of UE
WLAN_1 and WLAN_2 is designated, the situation of this 2 networks is as follows：
Signal intensity of the signal intensity of WLAN_1 higher than WLAN_2；
Load state of the load state of WLAN_1 less than WLAN_2；
WLAN_1 and WLAN_2 HS strategy all with ANDSF policy conflicts.
The interaction of UE and ANDSF servers is as shown in figure 4d：
Step 1：UE knows available WLAN access networks, after WLAN_1 and WLAN_2, to obtain WLAN_1 and WLAN_2
HS it is tactful, the HS strategies of WLAN_1 are designated as into HS_1, the HS strategies of WLAN_2 are designated as HS_2；
Step 2：Safeguard there are 2 lists in UE, list 1 is used to store HS strategies and the WLAN of ANDSF policy conflicts is accessed
The mark of network, list 2 are used for the mark for storing the WLAN access networks that HS strategies and ANDSF strategies do not conflict.UE contrasts HS_
1 and ANDSF is tactful, finds the two conflict, WLAN_1 is stored in list 1；Then UE contrasts HS_2 and ANDSF is tactful, sends out
Existing the two conflict, WLAN_2 is stored in list 1；
Now, the content of list 1 is<WLAN_1,WLAN_2>；The content of list 2 is sky.
Step 3：List 2 is sky, illustrate all available WLAN access networks HS it is tactful all with ANDSF policy conflicts.
In order to the conflict free ANDSF for obtaining new is tactful, UE updates request message to ANDSF servers sending strategy, and policy update please
The parameter carried in seeking message includes：The mark of UE（Such as IMSI）, UE positions（That is cell_1）, WLAN_1, HS_1, WLAN_
2, HS_2, policy conflict prompting；
Step 4：After ANDSF servers receive the policy update request message of UE transmissions, asked according to policy update
Around the CAMEL-Subscription-Information and UE of parameter information, UE in message, the new ANDSF of available Radio Access Network formulation is tactful, new
The difference of ANDSF strategies and the strategies of ANDSF before is that preferred wireless access technology is changed to by new ANDSF strategies
WiMAX, remaining content are identical, and then ANDSF returns policy update request to UE and replies message, and policy update request is replied message
The parameter of middle carrying includes that new ANDSF is tactful；
Step 5：UE is received after policy update request replies message, according to the new ANDSF strategies for wherein carrying
The content of RoutingCriteria nodes, determines the new ANDSF strategies effectively；
Step 6：UE is accessed according to new ANDSF strategy execution access network selection courses, final choice WiMAX_1, UE
Then partial discharge is switched to WiMAX_1 by WiMAX_1.
Embodiment three：
The embodiment is used to illustrate optional WLAN access networks and available WLAN access networks.
The optional mark of WLAN access networks and its information of priority that UE is obtained according to ANDSF strategies be：<
WLAN_1,1>,<WLAN_2,2>,<WLAN_3,3>（<WLAN access networks are identified, priority>, the less table of numerical value of priority
Show that priority is higher）.
UE locations only have the covering of WLAN_1, WLAN_2 and WLAN_4, the covering for not having WLAN_3, wlan network
The schematic diagram of covering as shown in fig 4e, so UE can search the signal of WLAN_1, WLAN_2 and WLAN_4, due to WLAN_1 and
WLAN_2 is the mark of the optional WLAN access networks that ANDSF strategies are provided, so the available WLAN access networks of UE are
The HS that WLAN_1 and WLAN_2, UE only obtain WLAN_1 and WLAN_2 is tactful.
Example IV：
The embodiment is used for the HS strategies and ANDSF strategies of the available WLAN access networks in part for illustrating UE and does not conflict
When, UE selects the process of WLAN access networks using this method.
Scene description：
The network coverage figure of UE present positions is as shown in fig. 4f.
All flows of UE are all route from E-UTRAN；
There is an ANDSF strategy in UE effectively, the ANDSF strategies show that UE needs a part of flow switch is connect to WLAN
Enter network, and the strategy gives the mark and its precedence information of WLAN access networks, details are as follows：
WLAN_1, priority are 1；
WLAN_2, priority are 2；
WLAN_3, priority are 3.
UE searches the signal of WLAN_1, WLAN_2 and WLAN_3, then the available WLAN access networks of UE are respectively
WLAN_1, WLAN_2 and WLAN_3, the situation of this 3 networks are as follows：
Signal intensity：WLAN_1>WLAN_2>WLAN_3；
Load state：WLAN_1<WLAN_2<WLAN_3；
The HS strategies and ANDSF strategies of the HS strategies and ANDSF policy conflicts, WLAN_2 and WLAN_3 of WLAN_1 is not rushed
It is prominent.
UE internal processes are as shown in figure 4g：
Step 1：The HS that UE obtains WLAN_1, WLAN_2 and WLAN_3 is tactful, and the HS strategies of WLAN_1 are designated as HS_1,
The HS strategies of WLAN_2 are designated as HS_2, and the HS strategies of WLAN_3 are designated as HS_3；
Step 2：Safeguard there are 2 lists in UE, list 1 is used to store HS strategies and the WLAN of ANDSF policy conflicts is accessed
The mark of network, list 2 are used for the mark for storing the WLAN access networks that HS strategies and ANDSF strategies do not conflict.UE contrasts HS_
1 and ANDSF is tactful, finds the two conflict, and UE is stored in WLAN_1 in list 1；Then UE contrasts HS_2 and ANDSF is tactful,
It was found that the two does not conflict, UE is stored in WLAN_2 in list 2；Then UE contrasts HS_3 and ANDSF is tactful, it is found that the two does not rush
Prominent, UE is stored in WLAN_3 in list 2；
Now, the content of list 1 is<WLAN_1>；The content of list 2 is<WLAN_2,WLAN_3>.
Step 3：As list 2 is not sky, UE determines that there is the tactful available WLAN not conflicted with ANDSF strategies of HS connects
Enter network；
Step 4：As the signal intensity and load state of WLAN_2 are better than WLAN_3, UE is using WLAN_2 as optimum
WLAN access networks；
Step 5：UE accesses WLAN_2.
Referring to Fig. 5, the embodiment of the present invention provides a kind of terminal, and the terminal includes：
Unit 50 is chosen, for optional WLAN access networks being determined according to the ANDSF strategies for obtaining, from optional WLAN
Available WLAN access networks are chosen in access network；
Determining unit 51, the HS for obtaining each available WLAN access network are tactful, and determine that each is available
The HS strategies of WLAN access networks whether with the ANDSF policy conflicts；
Acquiring unit 52, for when not having tactful with the ANDSF HS that do not conflict of strategy, from ANDSF servers
Obtain new ANDSF tactful；
Access unit 53, for according to the new ANDSF policy selection access networks, and accesses the access network of selection
Network.
Further, the selection unit 50 is used for：Determined according to the ANDSF strategies for obtaining as follows optional
WLAN access networks：
When ANDSF strategies do not provide the identification information of WLAN access networks, terminal determines that optional WLAN is accessed
Network is any one WLAN access network；
When ANDSF strategies provide the identification information of WLAN access networks, terminal determines that optional WLAN is accessed
Network is WLAN access networks corresponding to the identification information.
Further, the determining unit 51 is used for：Each available WLAN access network is determined as follows
HS strategies whether with the ANDSF policy conflicts：
For each available WLAN access network, terminal is tactful according to the HS of the available WLAN access networks, judges
The available WLAN access networks whether limit the transmission ANDSF it is tactful described in need be switched to WLAN access networks
IP streams, if, it is determined that the HS of the available WLAN access networks is tactful with the ANDSF policy conflicts, otherwise, it determines should
Available WLAN access networks HS strategy not with the ANDSF policy conflicts.
Further, the acquiring unit 52 is additionally operable to：Determine whether there is as follows tactful with the ANDSF
The HS not conflicted is tactful：
For each available WLAN access network, if the determining unit determines the HS of the available WLAN access networks
It is tactful with the ANDSF policy conflicts, then it is by the identification information storage of the available WLAN access networks in first list, no
Then, by the identification information storage of the available WLAN access networks in second list；
If second list is sky, it is determined that do not exist it is tactful with the ANDSF HS that do not conflict of strategy, otherwise, it determines depositing
Tactful with the ANDSF HS that do not conflict of strategy, and WLAN access networks corresponding to the identification information that stores in second list
Network is the tactful corresponding WLAN access networks of the HS not conflicted with ANDSF strategies.
Further, the access unit 53 is additionally operable to：
When the HS that presence is not conflicted with ANDSF strategies is tactful, from the HS that each is not conflicted with ANDSF strategies
A WLAN access network is selected in the corresponding WLAN access networks of strategy, and accesses the WLAN access networks of selection.
Further, the acquiring unit 52 is used for：New ANDSF plans are obtained from ANDSF servers as follows
Slightly：
Request message is updated to ANDSF servers sending strategy, the mark of the terminal is carried in the policy update request message
Knowledge information, the positional information of the terminal, the identification information of available WLAN access networks and corresponding HS strategy, and HS it is tactful
Conflict information；
The policy update request for receiving ANDSF server feedbacks is replied message, and the policy update request is taken in replying message
Band is tactful according to the new ANDSF that the parameter information in the policy update request message is formulated.
Referring to Fig. 6, the embodiment of the present invention provides a kind of ANDSF servers, and the ANDSF servers include：
Receiving unit 60, for the policy update request message that receiving terminal sends；
Unit 61 is formulated, it is tactful for making new ANDSF according to the policy update request message；
Feedback unit 62, replies message for returning policy update request to terminal, and the policy update request is replied message
It is middle that to carry the new ANDSF tactful.
Further, the formulation unit 61 is used for：
Following information is carried in the policy update request message：The identification information of the terminal, the position letter of the terminal
Breath, the identification information of available WLAN access networks and corresponding HS strategy, and during HS policy conflict informations, according to such as
It is tactful that lower section method makes new ANDSF：
Other access networks that access technology is not WLAN are selected for terminal, new ANDSF is tactful for formulation, and this is new
The stream description information for being used to route the ANDSF strategies for conflicting comprising selected other access networks during ANDSF is tactful is limited
IP stream；Or,
It is WLAN that access technology is selected for terminal, and formulates that new ANDSF is tactful, is included during the new ANDSF is tactful
Do not include passing through in the IP streams limited by the stream description information of the mark of WLAN access networks and the new ANDSF strategies
The IP streams of the WLAN access networks route that the new ANDSF strategies are provided；Or, do not include WLAN during the new ANDSF is tactful
The IP streams limited by the stream description information of the mark of access network and the new ANDSF strategies can pass through appointing for terminal surrounding
What one optional WLAN access networks transmission.
To sum up, beneficial effects of the present invention include：
In scheme provided in an embodiment of the present invention, terminal determines optional WLAN according to the ANDSF strategies for obtaining
WLAN access networks, choose available WLAN access networks from optional WLAN access networks；Obtain each available WLAN
The HS of access network is tactful, and determine the HS strategies of each available WLAN access network whether with the ANDSF policy conflicts；
Do not exist the HS not conflicted with ANDSF strategy it is tactful when, terminal obtains new tactful with HS do not conflict from ANDSF servers
ANDSF is tactful, then according to new ANDSF policy selection access networks, and accesses the access network of selection.It can be seen that, this programme
In to obtain the ANDSF that with HS strategy do not conflict of new from ANDSF servers by terminal tactful so that terminal can be according to new
ANDSF policy selection access network is simultaneously accessed, and in new ANDSF strategies ineffectives, terminal can select to connect according to other specification
Enter network, such as user preferences etc., how access network is asked when ANDSF strategies are with HS policy conflicts so as to solve terminal
Topic.
The present invention is with reference to method according to embodiments of the present invention, equipment（System）, and computer program flow process
Figure and/or block diagram are describing.It should be understood that can be by computer program instructions flowchart and/or each stream in block diagram
The combination of journey and/or square frame and flow chart and/or flow process and/or square frame in block diagram.These computer programs can be provided
The processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of specifying in present one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory is produced to be included referring to
Make the manufacture of device, the command device realize in one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or
The function of specifying in multiple square frames.
These computer program instructions can be also loaded in computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented process, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow process of flow chart or multiple flow processs and/or block diagram one
The step of function of specifying in individual square frame or multiple square frames.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into the had altered of the scope of the invention and change.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (16)
1. a kind of method for network access, it is characterised in that the method includes：
According to the access network discovery and selection function ANDSF strategy for obtaining, terminal determines that optional WLAN WLAN is accessed
Network, chooses available WLAN access networks from optional WLAN access networks；
The focus HS that terminal obtains each available WLAN access network is tactful, and determines each available WLAN access network
HS strategies whether with the ANDSF policy conflicts；
If not existing, the HS not conflicted with ANDSF strategies is tactful, terminal obtains new ANDSF plans from ANDSF servers
Slightly；
Terminal is according to the new ANDSF policy selection access networks, and accesses the access network of selection.
2. the method for claim 1, it is characterised in that the terminal determines optional according to the ANDSF strategies for obtaining
WLAN access networks, specifically include：
When ANDSF strategies do not provide the identification information of WLAN access networks, terminal determines optional WLAN access networks
For any one WLAN access network；
When ANDSF strategies provide the identification information of WLAN access networks, terminal determines optional WLAN access networks
For WLAN access networks corresponding to the identification information.
3. the method for claim 1, it is characterised in that the HS of the determination each available WLAN access network is tactful
Whether with the ANDSF policy conflicts, specifically include：
It is tactful according to the HS of the available WLAN access networks for each available WLAN access network, terminal, judge that this can
WLAN access networks whether limit the transmission ANDSF it is tactful described in need be switched to the IP of WLAN access networks
Stream, if, it is determined that the HS of the available WLAN access networks is tactful with the ANDSF policy conflicts, otherwise, it determines this is available
WLAN access networks HS strategy not with the ANDSF policy conflicts.
4. the method for claim 1, it is characterised in that determine whether there is the HS not conflicted with ANDSF strategies
The method of strategy includes：
For each available WLAN access network, terminal if it is determined that the HS of the available WLAN access networks it is tactful with it is described
ANDSF policy conflicts, then by the identification information storage of the available WLAN access networks in first list, otherwise, can by this
The identification information storage of WLAN access networks is in second list；
If second list is sky, it is determined that do not exist it is tactful with the ANDSF HS that do not conflict of strategy, otherwise, it determines exist and
The HS that ANDSF strategy does not conflict is tactful, and WLAN access networks corresponding to the identification information that stores in second list is
WLAN access networks corresponding with the HS strategies that ANDSF strategies do not conflict.
5. the method for claim 1, it is characterised in that further include：
If existing, the HS not conflicted with ANDSF strategies is tactful, the HS not conflicted with ANDSF strategies from each is tactful
A WLAN access network is selected in corresponding WLAN access networks, and accesses the WLAN access networks of selection.
6. the method for claim 1, it is characterised in that described to obtain new ANDSF from ANDSF servers tactful, has
Body includes：
Terminal updates request message to ANDSF servers sending strategy, and the mark of the terminal is carried in the policy update request message
Knowledge information, the positional information of the terminal, the identification information of available WLAN access networks and corresponding HS strategy, and HS it is tactful
Conflict information；
Terminal receives the policy update request of ANDSF server feedbacks and replies message, and the policy update request is taken in replying message
Band is tactful according to the new ANDSF that the parameter information in the policy update request message is formulated.
7. a kind of access network discovery and selection function ANDSF strategy sending method, it is characterised in that the method includes：
The policy update request message that ANDSF servers receiving terminal sends；
It is tactful that ANDSF servers make new ANDSF according to the policy update request message, wherein, it is described make it is new
ANDSF it is tactful, specifically include：
ANDSF servers are other access networks that terminal selects access technology not to be WLAN, and new ANDSF is tactful for formulation, should
It is used to route the stream description information institute of the ANDSF strategies for conflicting comprising selected other access networks during new ANDSF is tactful
The IP streams of restriction；Or,
ANDSF servers are that to select access technology be WLAN to terminal, and formulate that new ANDSF is tactful, during the new ANDSF is tactful
Not including in the IP streams limited by the stream description information of the mark comprising WLAN access networks and the new ANDSF strategies can not
The IP streams of the WLAN access networks route provided by the new ANDSF strategies；Or, do not include during the new ANDSF is tactful
The IP streams limited by the stream description information of the mark of WLAN access networks and the new ANDSF strategies can pass through terminal surrounding
Any one optional WLAN access networks transmission；
ANDSF servers return policy update request to terminal and reply message, and the policy update request replies message middle carrying institute
State new ANDSF tactful.
8. method as claimed in claim 7, it is characterised in that carry following information in the policy update request message：Should
The identification information of terminal, the positional information of the terminal, the identification information of available WLAN access networks and corresponding HS strategy, with
And HS policy conflict informations.
9. a kind of terminal, it is characterised in that the terminal includes：
Unit is chosen, for optional WLAN access networks being determined according to the ANDSF strategies for obtaining, from optional WLAN access networks
Available WLAN access networks are chosen in network；
Determining unit, the HS for obtaining each available WLAN access network are tactful, and determine that each available WLAN is accessed
The HS strategies of network whether with the ANDSF policy conflicts；
Acquiring unit, for when not having tactful with the ANDSF HS that do not conflict of strategy, obtaining newly from ANDSF servers
ANDSF it is tactful；
Access unit, for according to the new ANDSF policy selection access networks, and accesses the access network of selection.
10. terminal as claimed in claim 9, it is characterised in that the selection unit is used for：As follows according to acquisition
ANDSF strategies determine optional WLAN access networks：
When ANDSF strategies do not provide the identification information of WLAN access networks, terminal determines optional WLAN access networks
For any one WLAN access network；
When ANDSF strategies provide the identification information of WLAN access networks, terminal determines optional WLAN access networks
For WLAN access networks corresponding to the identification information.
11. terminals as claimed in claim 9, it is characterised in that the determining unit is used for：Determine each as follows
The HS strategies of available WLAN access networks whether with the ANDSF policy conflicts：
It is tactful according to the HS of the available WLAN access networks for each available WLAN access network, terminal, judge that this can
WLAN access networks whether limit the transmission ANDSF it is tactful described in need be switched to the IP of WLAN access networks
Stream, if, it is determined that the HS of the available WLAN access networks is tactful with the ANDSF policy conflicts, otherwise, it determines this is available
WLAN access networks HS strategy not with the ANDSF policy conflicts.
12. terminals as claimed in claim 9, it is characterised in that the acquiring unit is additionally operable to：Determining as follows is
The HS that no presence is not conflicted with ANDSF strategies is tactful：
For each available WLAN access network, if the determining unit determines that the HS of the available WLAN access networks is tactful
With the ANDSF policy conflicts, then by the identification information storage of the available WLAN access networks in first list, otherwise,
By the identification information storage of the available WLAN access networks in second list；
If second list is sky, it is determined that do not exist it is tactful with the ANDSF HS that do not conflict of strategy, otherwise, it determines exist and
The HS that ANDSF strategy does not conflict is tactful, and WLAN access networks corresponding to the identification information that stores in second list is
WLAN access networks corresponding with the HS strategies that ANDSF strategies do not conflict.
13. terminals as claimed in claim 9, it is characterised in that the access unit is additionally operable to：
When the HS that presence is not conflicted with ANDSF strategies is tactful, the HS not conflicted with ANDSF strategies from each is tactful
A WLAN access network is selected in corresponding WLAN access networks, and accesses the WLAN access networks of selection.
14. terminals as claimed in claim 9, it is characterised in that the acquiring unit is used for：As follows from ANDSF
It is tactful that server obtains new ANDSF：
Request message is updated to ANDSF servers sending strategy, the mark letter of the terminal is carried in the policy update request message
Breath, the positional information of the terminal, the identification information of available WLAN access networks and corresponding HS strategy, and HS policy conflicts
Information；
The policy update request for receiving ANDSF server feedbacks is replied message, and the policy update request replies message middle carrying root
The new ANDSF formulated according to the parameter information in the policy update request message is tactful.
15. a kind of ANDSF servers, it is characterised in that the ANDSF servers include：
Receiving unit, for the policy update request message that receiving terminal sends；
Unit is formulated, it is tactful for making new ANDSF according to the policy update request message, wherein, according to such as lower section
It is tactful that method makes new ANDSF：
Other access networks that access technology is not WLAN are selected for terminal, new ANDSF is tactful for formulation, the new ANDSF plans
It is used to route the IP streams limited by the stream description information of the ANDSF strategies for conflicting comprising selected other access networks in slightly；
Or,
It is WLAN that access technology is selected for terminal, and formulates that new ANDSF is tactful, is connect comprising WLAN during the new ANDSF is tactful
Not including in entering the IP streams limited by the stream description information of the mark and the new ANDSF strategies of network can not be new by this
The IP streams of the WLAN access networks route that ANDSF strategies are provided；Or, do not include WLAN access networks during the new ANDSF is tactful
The IP streams limited by the stream description information of the mark of network and the new ANDSF strategies can pass through any one of terminal surrounding
Optional WLAN access networks transmission；
Feedback unit, replies message for returning policy update request to terminal, and the policy update request replies message middle carrying
The new ANDSF is tactful.
16. ANDSF servers as claimed in claim 15, it is characterised in that the formulation unit is used for：
Following information is carried in the policy update request message：The identification information of the terminal, the positional information of the terminal, can
The identification information of WLAN access networks and corresponding HS strategies, and HS policy conflict informations.
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| CN103857003B (en) * | 2012-11-30 | 2018-12-18 | 上海诺基亚贝尔股份有限公司 | A kind of method and apparatus for accessing Wireless LAN for user equipment |
| CN105592566A (en) * | 2014-10-21 | 2016-05-18 | 中兴通讯股份有限公司 | WIFI hotspot connection method and WIFI hotspot connection device |
| US10264515B2 (en) * | 2014-12-22 | 2019-04-16 | Qualcomm Incorporated | Enhanced access network query protocol (ANQP) signaling to scale to support large numbers of service providers at an access point (AP) |
| US10623502B2 (en) * | 2015-02-04 | 2020-04-14 | Blackberry Limited | Link indication referring to content for presenting at a mobile device |
| EP3388967A1 (en) * | 2017-04-13 | 2018-10-17 | Thomson Licensing | Network device and method for determining security problems in such a network device |
| WO2019090672A1 (en) * | 2017-11-10 | 2019-05-16 | Oppo广东移动通信有限公司 | Method for configuring terminal policy, terminal, and network device |
| CN109743766B (en) | 2018-02-13 | 2020-06-16 | 华为技术有限公司 | Data routing method and device |
| WO2020252630A1 (en) | 2019-06-17 | 2020-12-24 | Oppo广东移动通信有限公司 | Method and device for determining and sending policy |
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| CN101730202A (en) * | 2009-03-23 | 2010-06-09 | 中兴通讯股份有限公司 | Method and device for determining access network discovery and selection functional unit policy |
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Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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Effective date of registration: 20210601 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |