CN101651977B - Network selection method and device based on multi-connection - Google Patents

Network selection method and device based on multi-connection Download PDF

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Publication number
CN101651977B
CN101651977B CN2009101714281A CN200910171428A CN101651977B CN 101651977 B CN101651977 B CN 101651977B CN 2009101714281 A CN2009101714281 A CN 2009101714281A CN 200910171428 A CN200910171428 A CN 200910171428A CN 101651977 B CN101651977 B CN 101651977B
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access network
network
iad
link
ability
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CN101651977A (en
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时晓岩
李岩
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2010/076237 priority patent/WO2011023086A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service

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  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention relates to network selection method and device based on multi-connection. The method comprises the following steps: a network entity obtains position information or access network identification of a user terminal UE; the network entity obtains a multi-connection capacity of an access gateway according to the position information or access network identification of the UE; and the network entity sends the multi-connection capacity of the access gateway to the UE so that the UE carries out network selection according to the multi-connection capacity of the access gateway. By adopting ANDSF to send the information on the multi-connection capacity of the access gateway to the UE, the invention solves the problem that the UE in the prior art cannot carry out network selection according to the information on the multi-connection capacity of the access gateway, thereby realizing that the UE can select networks according to the multi-connection capacity of the access gateway and avoiding the problem that the PDN connection interrupt is caused after the UE is switched or a plurality of PDN connections cannot be established.

Description

A kind of based on multi-link network selecting method and device
Technical field
The present invention relates to communication technical field, is based on multi-link network selecting method and device specifically about a kind of.
Background technology
At third generation collaborative project (3GPP, 3rd Generation Partnership Project) evolution block core net (EPC of lining definition, Evolved Packet Core) in the framework, terminal (UE) is by attachment flow or packet data network (PDN, Packet Data Network) setting up PDN connects, UE obtains the IP address by the PDN connection, and connects the visit that realizes PDN by this PDN.At IAD and packet data network gateway (PGW, when PDN Gateway) supporting multi-link ability, UE can set up a plurality of PDN at same APN and connect, and PGW distributes different IP addresses for each PDN connects, and UE is by the visit of different IP address realizations to packet data network.
Access network discovery and selection functional entity (ANDSF, Access Network Discovery andSelection Function) be used to assist UE to carry out the discovery and the selection of Access Network, ANDSF can send to UE with shift strategy between system and access network discovery information by PULL or PUSH pattern.UE obtains available Access Network tabulation by PULL or PUSH mode, and between system behind the shift strategy, carries out handover decisions, the objective network whether decision is switched and switched.
The inventor finds in implementing process of the present invention: when the UE with a plurality of PDN connections carries out the IAD switching, may cause existing PDN to connect and interrupt, thereby cause the customer service failure.
Summary of the invention
The invention provides a kind ofly, carry out IAD when switching, may cause existing PDN to connect the problem of interruption so that solve when having UE that a plurality of PDN connect based on multi-link network selecting method and device.
It is a kind of based on multi-link network selecting method that the embodiment of the invention provides, and described method comprises: network entity obtains positional information or the Access Network sign of user terminal UE; The multi-link ability that network entity obtains IAD according to positional information or the Access Network sign of described UE; Network entity sends to described UE with the multi-link ability of described IAD, makes described UE carry out network selecting according to the multi-link ability of described IAD.
It is a kind of based on multi-link network selecting method that the embodiment of the invention provides, and described method comprises: network entity obtains positional information and the multi-connection state of user terminal UE; Network entity obtains the multi-link ability of IAD according to the positional information of described UE; Network entity is according to shift strategy between the multi-link ability formulation system of the multi-connection state of UE and IAD; Network entity sends to described UE with shift strategy between described system, makes described UE carry out network selecting according to shift strategy between described system.
It is a kind of based on multi-link network selection apparatus that the embodiment of the invention also provides, and described device comprises: the end message acquiring unit is used to obtain positional information or the Access Network sign of user terminal UE; Gateway ability acquiring unit is used for the multi-link ability of obtaining IAD according to positional information or the Access Network sign of described UE; Gateway ability transmitting element is used for the multi-link ability of described IAD is sent to described UE, makes described UE carry out network selecting according to the multi-link ability of described IAD.
It is a kind of based on multi-link network selection apparatus that the embodiment of the invention also provides, and described device comprises: the SOT state of termination acquiring unit is used to obtain positional information and the multi-connection state of user terminal UE; Gateway ability acquiring unit is used for obtaining according to the positional information of described UE the multi-link ability of IAD; Shift strategy is formulated the unit, is used for according to shift strategy between the multi-link ability formulation system of the multi-connection state of UE and IAD; The shift strategy transmitting element is used for shift strategy between described system is sent to described UE, makes described UE carry out network selecting according to shift strategy between described system.
The present invention adopts ANDSF to issue the multi-link ability information of IAD to UE, overcome the problem that prior art UE can't carry out network selecting according to the multi-link ability information of IAD, realized that UE can carry out network selecting according to the multi-link ability of IAD, avoided the PDN that causes after the UE switching to connect the problem of interrupting or can't set up a plurality of PDN connections.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute limitation of the invention.In the accompanying drawings:
Shown in Figure 1 be the embodiment of the invention provide a kind of based on multi-link network selecting method flow chart;
The ANDSF that is the embodiment of the invention provides shown in Figure 2 sends the method signaling diagram of the multi-link ability information of IAD to UE according to the positional information of UE;
The ANDSF that is the embodiment of the invention provides shown in Figure 3 sends the method signaling diagram of the multi-link ability information of IAD to UE;
Shown in Figure 4 be the embodiment of the invention provide a kind of based on multi-link network selecting method flow chart;
The ANDSF that is the embodiment of the invention provides shown in Figure 5 sends the method signaling diagram of network selecting policy information to UE;
Shown in Figure 6 is a kind of block diagram based on multi-link network selection apparatus 600 that the embodiment of the invention provides;
Fig. 7 is the block diagram of the end message acquiring unit 601 that provides of the embodiment of the invention;
Fig. 8 is the block diagram of the gateway ability acquiring unit 602 that provides of the embodiment of the invention;
Shown in Figure 9 is a kind of block diagram based on multi-link network selection apparatus 900 that the embodiment of the invention provides;
Figure 10 is the block diagram of the SOT state of termination acquiring unit 901 that provides of the embodiment of the invention.
Embodiment
Concrete, when real network is disposed, the IAD of some access network correspondence is not support multi-link ability, when UE switches to the following time of IAD of not supporting multi-link ability, can't set up a plurality of PDN connects, connect if set up a plurality of PDN before switching, can only keep one after then switching, other PDN connection all can be interrupted.
And UE is when carrying out the network handover decisions, UE only can obtain access technology information from ANDSF in the prior art, can't obtain corresponding IAD to multi-link tenability information, this can cause UE to carry out handover decisions according to the multi-link ability of IAD, may be owing to the IAD after switching not be supported multi-link ability, cause that can't set up a plurality of PDN after interruption that existing PDN connects or UE switch connects.
For example: UE inserts by 3GPP and is attached to EPC, and has set up a plurality of PDN connections under same APN (APN is used as the PDN sign among the 3GPP); If the UE position exists WiMAX network and 3GPP2 network, IAD HSGW (the HRPDServing Gateway of 3GPP2 correspondence wherein, the high-speed grouped data network gateway) supports multi-link ability, the IAD ASN-GW of WiMAX correspondence (Access Services Network Gateway access service network gateway) does not support multi-link ability, if UE has set up a plurality of PDN connections in this case, switch to WIMAX and then can cause existing PDN to connect interruption, therefore should preferentially switch to 3GPP2.And in fact UE can't obtain the multi-link ability information of IAD from ANDSF, so the handover decisions that may do to make mistake.
Therefore, the embodiment of the invention provides a kind of based on multi-link network selecting method and device.For making the purpose, technical solutions and advantages of the present invention clearer,, the present invention is described in further details below in conjunction with execution mode and accompanying drawing.At this, exemplary embodiment of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
Embodiment one
Shown in Figure 1 be the embodiment of the invention provide a kind of based on multi-link network selecting method flow chart, as shown in Figure 1, network selecting method comprises:
S101, network entity obtain positional information or the Access Network sign of user terminal UE.
In embodiments of the present invention, network entity can be access network discovery and selection functional entity ANDSF, and ANDSF can receive the Access Network information request message that comprises the UE positional information that UE sends; Or when the position of UE changed, ANDSF can receive the reporting message that HSS (user-subscribed database, Home Subscriber Server) sends, and comprised the positional information of UE in the reporting message.In another embodiment of the present invention, ANDSF receives the Access Network information request message that UE sends, and can comprise the Access Network sign of UE Access Network to be selected in the Access Network information request message.
S102, the multi-link ability that network entity obtains IAD according to positional information or the Access Network sign of described UE.
In embodiments of the present invention, multi-link being meant set up a plurality of PDN connections under the same APN (APN, Access PointName); Multi-link ability is meant multi-link tenability promptly whether support to set up under the same APN a plurality of PDN and connect.The multi-link ability information of IAD can only contain the multi-link ability of IAD, also can contain the multi-link ability of the accompanying packet data network gateway (PGW) of IAD and current UE simultaneously.
In embodiments of the present invention, ANDSF can identify the multi-link ability of obtaining IAD according to positional information or the Access Network of UE.Specifically can comprise search the corresponding Access Network of the Access Network of UE position correspondence or Access Network sign as: ANDSF after, IAD in the Access Network that finds sends multi-link capabilities request message, the multi-link ability of the IAD that the IAD in the Access Network that ANDSF reception afterwards finds returns.
S103, network entity sends to described UE with the multi-link ability of described IAD, makes described UE carry out network selecting according to the multi-link ability of described IAD.
In embodiments of the present invention, ANDSF obtains the multi-link ability information of IAD, and the multi-link ability information of the IAD that obtains is issued to UE.ANDSF can obtain the multi-link ability of network side IAD by modes such as static configuration, also can by with other entities of network side (PGW, SGW (Serving Gateway for example, gateway)) dynamic interaction obtains the multi-link ability of network side IAD.
In embodiments of the present invention, when UE carries out network selecting according to the multi-link ability information of the IAD that receives from ANDSF, can consider the current multi-connection state of self and whether prepare under same APN, to set up a plurality of PDN to connect and carry out network selecting.UE can be according to the handover network as a result of network selecting.
Embodiment two
Shown in Figure 2 to be the ANDSF that provides of the embodiment of the invention send the method signaling diagram of the multi-link ability information of IAD according to the positional information of UE to UE, and as shown in Figure 2, described method comprises:
Step S201, UE have set up with EPC by 3GPP or non-3GPP access and have been connected;
Step S202, UE set up safety with ANDSF and are connected;
Step S203, UE sends the Access Network information request message to ANDSF, this information contains the positional information of UE, in another embodiment of the present invention, can contain one or more Access Network sign in the Access Network information request message, be used to ask the multi-link ability of the IAD of corresponding Access Network correspondence;
In one embodiment of this invention, after step S203, ANDSF can send multi-link capability requests information to the IAD of the Access Network correspondence of UE position, and obtain the multi-link ability (scene that two access gateway AG W1, AGW2 are arranged as the UE position of IAD of the Access Network correspondence of UE position by response message, when one or more IAD, ANDSF sends request to each IAD respectively).
Step S204, ANDSF send the Access Network info response message to UE, and the IAD that includes near the Access Network correspondence in UE position is to multi-link tenability (one or more IAD is to multi-link tenability); When Access Network is shared, when being the corresponding a plurality of IAD of same Access Network, ANDSF need indicate the pairing operator of IAD sign when sending the IAD ability to UE, in another embodiment of the present invention, ANDSF sends the multi-link ability (one or more) that the Access Network info response message can comprise the IAD of Access Network sign correspondence in the solicited message;
Step S205, UE to multi-link tenability, select suitable Access Network according to IAD, and for example UE exists multi-link or UE prepares to set up multi-link, and then UE selects to support the Access Network of multi-link IAD correspondence;
Step S206 need carry out switching between system if UE judges, then switching flow between UE initiation system.
The present invention adopts ANDSF to issue the multi-link ability information of IAD to UE, overcome the problem that prior art UE can't carry out network selecting according to the multi-link ability information of IAD, realized that UE can carry out network selecting according to the multi-link ability of IAD, avoided the PDN that causes after the UE switching to connect the problem of interrupting or can't set up a plurality of PDN connections.
Embodiment three
Shown in Figure 3 to be the ANDSF that provides of the embodiment of the invention send the method signaling diagram of the multi-link ability information of IAD to UE, and as shown in Figure 3, described method comprises:
Step S301, UE have set up with ANDSF and have been connected, and with reference to step 201 shown in Figure 2 and step 202, are not giving unnecessary details;
Step S302, ANDSF receives that the Access Network of the change in location of UE or UE position changes or incident such as IAD capacity variation, in embodiments of the present invention, when the position of UE changes, ANDSF can receive the reporting message that HSS sends, the positional information that comprises UE in the reporting message, ANDSF also can be to PCRF (Policy and Charging Rule Function, strategy and charging controlled function entity) multi-connection state of inquiry UE, receive the multi-connection state of the UE that PCRF returns;
Step S303, ANDSF send Access Network information updating message to UE, and the IAD that includes near the Access Network correspondence in UE position is to multi-link tenability (one or more Access Network is to multi-link tenability);
Step S304, UE send Access Network information answer message to ANDSF;
Step S305, UE to multi-link tenability, select suitable Access Network according to IAD;
Step S306 need carry out switching between system if UE judges, then switching flow between UE initiation system.
The present invention adopts ANDSF to issue the multi-link ability information of IAD to UE, overcome the problem that prior art UE can't carry out network selecting according to the multi-link ability information of IAD, realized that UE can carry out network selecting according to the multi-link ability of IAD, avoided the PDN that causes after the UE switching to connect the problem of interrupting or can't set up a plurality of PDN connections.
Embodiment four
Shown in Figure 4 be the embodiment of the invention provide a kind of based on multi-link network selecting method flow chart, as shown in Figure 4, network selecting method comprises:
S401, network entity obtain positional information and the multi-connection state of user terminal UE.
In embodiments of the present invention, ANDSF receives the Access Network information request message that UE sends, the positional information and the multi-link information that can comprise UE in the Access Network information request message, multi-link information can comprise the multi-connection state information of obtaining UE and obtain the multi-link ability information of UE.The positional information that also can only comprise UE in the Access Network information request message, ANDSF is to the multi-connection state of strategy with charging controlled function entity PCRF inquiry UE, the multi-connection state of the UE that reception PCRF returns.
S402, network entity obtain the multi-link ability of IAD according to the positional information of described UE.
In embodiments of the present invention, ANDSF obtains the multi-link ability of IAD according to the positional information of UE, after ANDSF searches the corresponding Access Network of the Access Network of UE position correspondence or Access Network sign, IAD in the Access Network that finds sends multi-link capabilities request message, the multi-link ability of the IAD that the IAD in the Access Network that ANDSF reception afterwards finds returns.ANDSF can obtain the multi-link ability of network side by modes such as static configuration, also can by with the dynamic interaction of other entities of network side (for example PGW, SGW), obtain the multi-link ability of network side.
S403, network entity is according to shift strategy between the multi-link ability formulation system of the multi-connection state of UE and IAD.
In embodiments of the present invention, ANDSF it is also conceivable that the multi-connection state of UE, perhaps the multi-link ability of UE according between the multi-link ability formulation of network side system during switchover policy.For example set up when multi-link as UE, can improve the switching priority of the Access Network of supporting multi-link IAD correspondence
S404, network entity sends to described UE with shift strategy between described system, makes described UE carry out network selecting according to shift strategy between described system.
Shown in Figure 5 to be the ANDSF that provides of the embodiment of the invention send the method signaling diagram of network selecting policy information to UE, and as shown in Figure 5, described method comprises:
Step S501, UE have set up with ANDSF and have been connected, and with reference to step 201 shown in Figure 2 and step 202, are not giving unnecessary details;
Step S502, UE send the Access Network information request message to ANDSF, and this information contains the positional information of UE;
Step S503, ANDSF is to the multi-connection state of PCRF inquiry UE;
Step S504, ANDSF is according to the multi-connection state of UE, and the multi-link ability of the IAD of the Access Network correspondence of UE position is carried out the formulation of shift strategy between system, for example UE has set up when multi-link, improve the switching priority of supporting multi-link Access Network, maybe can indicate and forbid that switching to WLAN from the E-UTRAN access inserts, perhaps indicate WiMAX and insert preferential and the WLAN access;
Step S505, ANDSF send the Access Network info response message to UE, include shift strategy between the system that formulates according to the UE multi-connection state;
Step S506, UE select suitable Access Network according to shift strategy between system;
Step S507 need carry out switching between system if UE judges, then switching flow between UE initiation system.
The present invention adopts ANDSF to issue according to the multi-link information of UE and the multi-link ability information of IAD to UE and generates the network selecting policy information, overcome the problem that prior art UE can't carry out network selecting according to the multi-link ability information of IAD, realized that UE can carry out network selecting according to the multi-link ability of IAD, avoided the PDN that causes after the UE switching to connect the problem of interrupting or can't set up a plurality of PDN connections.
Embodiment five
Shown in Figure 6 is a kind of block diagram based on multi-link network selection apparatus 600 that the embodiment of the invention provides, and as shown in Figure 6, network selection apparatus 600 comprises: end message acquiring unit 601, gateway ability acquiring unit 602 and gateway ability transmitting element 603.
End message acquiring unit 601 is used to obtain positional information or the Access Network sign of user terminal UE.
In embodiments of the present invention, network selection apparatus 600 can be access network discovery and selection functional entity ANDSF, and end message acquiring unit 601 receives the Access Network information request message that comprises the UE positional information that UE sends.
Fig. 7 is the block diagram of the end message acquiring unit 601 that provides of the embodiment of the invention, and as shown in Figure 7, end message acquiring unit 601 can also comprise:
Positional information receiver module 701 is used to receive the Access Network information request message of the positional information that comprises UE that described UE sends;
Reporting message receiver module 702 is used for when the position of described UE changes, and receives the reporting message that user-subscribed database HSS sends, and described reporting message comprises the positional information of UE.
Access Network sign receiver module 703 is used to receive the Access Network information request message of the Access Network sign that comprises UE Access Network to be selected that UE sends.
Gateway ability acquiring unit 602 is used for the multi-link ability of obtaining IAD according to positional information or the Access Network sign of described UE;
In embodiments of the present invention, gateway ability acquiring unit 602 can identify the multi-link ability of obtaining IAD according to positional information or the Access Network of UE.
Fig. 8 is the block diagram of the gateway ability acquiring unit 602 that provides of the embodiment of the invention, and as shown in Figure 8, gateway ability acquiring unit 602 can also comprise:
Access network finding module 801 is used to search the Access Network or the corresponding Access Network of Access Network sign of UE position correspondence;
Concatenation ability request module 802 is used for sending multi-link capabilities request message to the IAD of the Access Network that finds;
Concatenation ability receiver module 803 is used for receiving the multi-link ability of the IAD that the IAD of the Access Network that finds returns.
Gateway ability transmitting element 603 is used for the multi-link ability of described IAD is sent to described UE, makes described UE carry out network selecting according to the multi-link ability of described IAD.
In embodiments of the present invention, in embodiments of the present invention, after gateway ability acquiring unit 602 obtained the multi-link ability information of IAD, gateway ability transmitting element 603 was issued to UE with the multi-link ability information of the IAD that obtains.
The present invention adopts ANDSF to issue according to the multi-link information of UE and the multi-link ability information of IAD to UE and generates the network selecting policy information, overcome the problem that prior art UE can't carry out network selecting according to the multi-link ability information of IAD, realized that UE can carry out network selecting according to the multi-link ability of IAD, avoided the PDN that causes after the UE switching to connect the problem of interrupting or can't set up a plurality of PDN connections.
Embodiment six
Shown in Figure 9 is a kind of block diagram based on multi-link network selection apparatus 900 that the embodiment of the invention provides, and as shown in Figure 9, network selection apparatus 900 comprises:
SOT state of termination acquiring unit 901 is used to obtain positional information and the multi-connection state of user terminal UE;
In embodiments of the present invention, SOT state of termination acquiring unit 901 obtains positional information and the multi-connection state information of user terminal UE.
Gateway ability acquiring unit 902 is used for obtaining according to the positional information of described UE the multi-link ability of IAD;
In embodiments of the present invention, the positional information of the UE that obtains according to SOT state of termination acquiring unit 901 of gateway ability acquiring unit 902 is obtained the multi-link ability of IAD.
Shift strategy is formulated unit 903, is used for according to shift strategy between the multi-link ability formulation system of the multi-connection state of UE and IAD;
In embodiments of the present invention, shift strategy is formulated unit 903 according to shift strategy between the multi-link ability formulation system of the multi-connection state of UE and IAD.
Shift strategy transmitting element 904 is used for shift strategy between described system is sent to described UE, makes described UE carry out network selecting according to shift strategy between described system.
In embodiments of the present invention, shift strategy transmitting element 904 is formulated shift strategy that shift strategy sends to described UE between the system that formulates unit 903, makes UE carry out network selecting according to shift strategy between system.
Figure 10 is the block diagram of the SOT state of termination acquiring unit 901 that provides of the embodiment of the invention, and as shown in figure 10, SOT state of termination acquiring unit 901 can also comprise:
SOT state of termination receiver module 1001 is used to receive the Access Network information request message that described UE sends, and comprises positional information and the multi-connection state of described UE in the described Access Network information request message;
SOT state of termination enquiry module 1002 is used for inquiring about the multi-connection state of described UE to strategy with charging controlled function entity PCRF, receives the multi-connection state of the described UE that PCRF returns.
The present invention adopts ANDSF shift strategy between UE issues according to the multi-link ability information generation system of the multi-link information of UE and IAD, make UE to carry out network selecting according to shift strategy between system, overcome the problem that prior art UE can't carry out network selecting according to the multi-link ability information of IAD, the PDN that causes after having avoided UE to switch connects and interrupts or can't set up the problem that a plurality of PDN connect.
Those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can software product form embody, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (12)

1. one kind based on multi-link network selecting method, it is characterized in that described method comprises:
Network entity obtains the Access Network sign of the positional information of user terminal UE or UE Access Network to be selected;
The multi-link ability that network entity obtains IAD according to positional information or the Access Network sign of described UE;
Network entity sends to described UE with the multi-link ability of described IAD, makes described UE carry out network selecting according to the multi-link ability of described IAD.
2. network selecting method as claimed in claim 1 is characterized in that, described network entity is specially access network discovery and selection functional entity ANDSF.
3. network selecting method as claimed in claim 1 or 2 is characterized in that, the positional information that described network entity obtains user terminal UE is specially:
Network entity receives the Access Network information request message that described UE sends, and comprises the positional information of described UE in the described Access Network information request message; Or,
When the position of described UE changed, described network entity received the reporting message that user-subscribed database HSS sends, and described reporting message comprises the positional information of described UE.
4. network selecting method as claimed in claim 1 or 2 is characterized in that, the Access Network sign that network entity obtains user terminal UE is specially:
Network entity receives the Access Network information request message that described UE sends, and comprises the Access Network sign of described UE Access Network to be selected in the described Access Network information request message.
5. network selecting method as claimed in claim 1 or 2 is characterized in that, the multi-link ability that described network entity obtains IAD according to positional information or the Access Network sign of described UE is specially:
Network entity is searched the Access Network or the corresponding Access Network of described Access Network sign of described UE position correspondence;
The IAD of network entity in the Access Network that finds sends multi-link capabilities request message;
The multi-link ability of the described IAD that the IAD in the described Access Network that finds of network entity reception returns.
6. one kind based on multi-link network selecting method, it is characterized in that described method comprises:
Network entity obtains positional information and the multi-connection state of user terminal UE;
Network entity obtains the multi-link ability of the IAD in the UE Access Network to be selected according to the positional information of described UE;
Network entity is according to shift strategy between the multi-link ability formulation system of the multi-connection state of UE and IAD;
Network entity sends to described UE with shift strategy between described system, makes described UE carry out network selecting according to shift strategy between described system.
7. network selecting method as claimed in claim 6 is characterized in that, positional information and multi-connection state that described network entity obtains user terminal UE are specially:
Network entity receives the Access Network information request message that described UE sends, and comprises positional information and the multi-connection state of described UE in the described Access Network information request message; Or,
Network entity receives the Access Network information request message that described UE sends, and comprises the positional information of described UE in the described Access Network information request message; Network entity is inquired about the multi-connection state of described UE to strategy with charging controlled function entity PCRF, receives the multi-connection state of the described UE that PCRF returns.
8. one kind based on multi-link network selection apparatus, it is characterized in that described device comprises:
The end message acquiring unit is used to obtain the Access Network sign of the positional information of user terminal UE or UE Access Network to be selected;
Gateway ability acquiring unit is used for the multi-link ability of obtaining IAD according to positional information or the Access Network sign of described UE;
Gateway ability transmitting element is used for the multi-link ability of described IAD is sent to described UE, makes described UE carry out network selecting according to the multi-link ability of described IAD.
9. network selection apparatus as claimed in claim 8 is characterized in that, described end message acquiring unit comprises:
The positional information receiver module is used to receive the Access Network information request message that described UE sends, and comprises the positional information of described UE in the described Access Network information request message; Or,
The reporting message receiver module is used for when the position of described UE changes, and receives the reporting message that user-subscribed database HSS sends, and described reporting message comprises the positional information of described UE; Or,
Access Network sign receiver module is used to receive the Access Network information request message that described UE sends, and comprises the Access Network sign of described UE Access Network to be selected in the described Access Network information request message.
10. network selection apparatus as claimed in claim 8 is characterized in that, described gateway ability acquiring unit comprises:
The access network finding module is used to search the Access Network or the corresponding Access Network of described Access Network sign of described UE position correspondence;
The concatenation ability request module is used for sending multi-link capabilities request message to the IAD of the Access Network that finds;
The concatenation ability receiver module is used for receiving the multi-link ability of the described IAD that the IAD of the described Access Network that finds returns.
11. one kind based on multi-link network selection apparatus, it is characterized in that described method comprises:
The SOT state of termination acquiring unit is used to obtain positional information and the multi-connection state of user terminal UE;
Gateway ability acquiring unit is used for obtaining according to the positional information of described UE the multi-link ability of the IAD of UE Access Network to be selected;
Shift strategy is formulated the unit, is used for according to shift strategy between the multi-link ability formulation system of the multi-connection state of UE and IAD;
The shift strategy transmitting element is used for shift strategy between described system is sent to described UE, makes described UE carry out network selecting according to shift strategy between described system.
12. network selection apparatus as claimed in claim 11 is characterized in that, described SOT state of termination acquiring unit comprises:
The SOT state of termination receiver module is used to receive the Access Network information request message that described UE sends, and comprises positional information and the multi-connection state of described UE in the described Access Network information request message; Or,
The SOT state of termination enquiry module is used for inquiring about the multi-connection state of described UE to strategy with charging controlled function entity PCRF, receives the multi-connection state of the described UE that PCRF returns.
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