WO2015172338A1

WO2015172338A1 - Access point selection method and related device

Info

Publication number: WO2015172338A1
Application number: PCT/CN2014/077494
Authority: WO
Inventors: 于游洋; 于益俊
Original assignee: 华为技术有限公司
Priority date: 2014-05-14
Filing date: 2014-05-14
Publication date: 2015-11-19
Also published as: CN105359580B; CN105359580A

Abstract

Disclosed in an embodiment of the present invention are an access point selection method and related device, the method comprising: acquiring a first feature description of a target application of a terminal; according to the first feature description, determining that the current access point name (APN) of the terminal cannot be used to transmit the data packet of a target application; determining for the terminal a target APN capable of being used to transmit the data packet of the target application; and instructing the terminal to transmit the data packet of the target application via the target APN. The present invention detects whether the current APN is correct, and timely pushes a correct APN to a terminal after detecting that the current APN is incorrect, thus avoiding the inaccessibility of the application data or the application establishment failure caused by an APN selection error.

Description

Method for selecting access point and related device

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and a related device for selecting an access point.

Background technique

LTE (Long Term Evolution) defines a flatter than 2G and 3G networks. Flattened mobile communication network architecture, which only retains the packet domain, which can be called evolved 3GPP packet switching Domain, or EPS (Evolved Packet System). In the EPS architecture The network element type can be divided into control plane network elements, including MME (Mobility Management Entity, Mobile management entity), PCRF (Policy and Charging Rules Function) Server), etc., or divided into user plane network elements, including SGW (Serving Gateway, service gateway), PGW (PDN Gateway, Data Gateway), etc. PCRF and ANDSF may also exist in the EPS architecture. (Access Network Discovery and Selection Function, access network discovery and selection function service Server). The PCRF is mainly responsible for generating policy and charging control information of the flow granularity, ANDSF service. The server is responsible for providing access network discovery information and APN (Access) to the UE (User Equipment). Point Name, access point name) switching policy, system switching policy, and so on.

APN refers to a network access technology, which must be configured when users access the Internet through mobile phones. Parameters, APN determines which access method the user's mobile phone will use for network access. User equipment The access network can be selected based on the above policy and decide whether to switch to the target access network.

Currently, the user equipment (UE) is mainly based on the implementation of the newly created application. APN, if the current UE and the network side do not have a PDN corresponding to the APN (Packet Data Network, data network) connection, the UE initiates a connection establishment procedure for the PDN of the APN; If there is currently a PDN connection for the APN, the application data is directly sent through the PDN connection. package. However, if the current APN selection is incorrect, the selected APN is not suitable for transmitting the newly created application. Packets may cause the target server to be unreachable and the data transmission path to be unsatisfactory.

Summary of the invention

Embodiments of the present invention provide a method for selecting an access point and related devices, which can determine the correctness for the terminal. Access point APN.

In a first aspect, an embodiment of the present invention provides a method for selecting an access point, including:

Obtaining first feature description information of the target application of the terminal;

Determining, according to the first feature description information, that the current access point APN of the terminal cannot be used for Transmitting a data packet of the target application;

Determining, for the terminal, a target access point that can be used to transmit a data packet of the target application APN;

Instructing the terminal to transmit a data packet of the target application by using the target access point APN;

The first feature description information includes a source IP address and a destination IP address of the target application. At least one of an address, a source port number, a destination port number, a protocol type, and an application identifier.

With reference to the first aspect, in a first possible implementation manner, the acquiring a target application of the terminal The first feature description information includes:

Receiving a bearer resource modification request sent by the terminal, where the bearer resource modification request includes Descriptive information describing the first feature of the target application;

Extracting the first feature description information from the bearer resource modification request.

In combination with the first possible implementation of the first aspect, in a second possible implementation manner, Determining, according to the first feature description information, that the current access point APN of the terminal cannot be used for transmitting The data packet for the target application, including:

Sending the first feature description information to the policy and charging function server PCRF to request the location The PCRF detects whether the current access point APN of the terminal can be used to transmit the number of the target applications. According to the package;

Receiving a detection result returned by the PCRF, if the detection result includes The target access point APN of the data packet of the target application determines that the current access point APN of the terminal is not A data packet that can be used to transmit the target application;

Determining, for the terminal, a target access point that can be used to transmit a data packet of the target application APN, including:

Determining, by the detection result, the target access point APN as a target access of the terminal Point APN.

In conjunction with the first aspect, in a third possible implementation, the describing according to the first feature Determining that the current access point APN of the terminal cannot be used to transmit the data packet of the target application, include:

Determining whether the first feature description information matches a preset data description parameter;

If it matches, determining that the current access point APN of the terminal cannot be used to transmit the target application Packet.

In conjunction with the third possible implementation of the first aspect, in a fourth possible implementation,

The preset data description parameter includes: an event subscription parameter, where the event subscription parameter includes The second feature description information and the behavior description parameter, where the behavior description parameter includes an indication report server or a loss Discard the parameters of the packet;

The determining whether the first feature description information matches the preset data description parameter includes:

Determining whether one or more pieces of description information and the first part exist in the first feature description information One or more of the description information in the second feature description information is the same;

If the judgment result is that one or more description information and the presence information are present in the first feature description information One or more of the description information in the second feature description information is the same, and the behavior description parameter is The parameter indicating the report to the server sends the first feature description information to the policy and charging function Server PCRF;

Receiving, by the PCRF, the information acquired according to the first feature description information, for transmitting the target a target access point APN of the applied data packet, and determining the target access point APN as the terminal Target access point APN.

In conjunction with the third possible implementation of the first aspect, in a fifth possible implementation,

The preset data description parameter includes: preset access configuration parameters, and the access configuration parameter Included in the third feature description information and at least one access point APN;

Determining whether one or more pieces of description information and the first part exist in the first feature description information One or more of the description information in the three feature description information is the same;

If the judgment result is that one or more description information and the presence information are present in the first feature description information If the one or more description information in the third feature description information is the same, the access configuration parameter is obtained. The at least one access point APN included in the number;

Selecting, corresponding to the first feature description information, from the at least one access point APN The ingress APN acts as a target access point APN that can be used to transmit data packets for the target application.

Combining the first aspect, or the first possible implementation of the first aspect, or the first aspect a second possible implementation, or a third possible implementation of the first aspect, or a first party The fourth possible implementation of the face, or the fifth possible implementation of the first aspect, in the sixth In a possible implementation manner, the indicating that the terminal transmits the identifier by using the target access point APN The target application's data package, including:

And transmitting the first feature description information and the update bearer request of the target access point APN And sent to the mobility management entity MME, so that the mobility management entity MME is controlled by radio resources The RRC connection configuration pushes the first feature description information and the target access point APN to the end end.

In combination with the sixth possible implementation of the first aspect, in a seventh possible implementation, include:

If the current access point APN cannot be used to transmit the data packet of the target application, the receiving policy and The charging function server PCRF is based on a prohibition indication sent by the PCC rule, and the prohibition indication includes Current access point APN;

Generating a forbidden class flow template including the first feature description information and the prohibition indication, and passing The default bearer pushes the forbidden class flow template to the terminal.

In a second aspect, the embodiment of the present invention further provides another method for selecting an access point, including:

Obtaining feature description information of the target application, where the feature description information includes a source IP of the target application Address, destination IP address, source port number, destination port number, protocol type, and application ID One;

Determining, according to the feature description information, whether the current access point APN of the terminal can be used for transmitting Transmitting a data packet of the target application;

If the determination result is no, determining target access of the data packet that can be used to transmit the target application Point APN;

Sending the target access point APN to the data gateway PGW.

In conjunction with the second aspect, in a first possible implementation, the determining is operative to transmit the The target access point APN of the target application's data packet, including:

Sending the obtained feature description information to the access network for discovery and selection by the access point request Select function server ANDSF;

Receiving, by the ANDSF, the number of target applications that can be used to transmit the target application in response to the access point request According to the target access point APN of the package.

Combining the second aspect, or the first possible implementation of the second aspect, in the second possible In an implementation manner, the sending, by the target access point APN, the data gateway PGW includes:

Generating feature description information including the target application and the first finger of the target access point APN Display information

Feature description information including the target application and the target access point will be included based on PCC rules The first indication information of the APN is sent to the data gateway PGW.

In combination with the second possible implementation of the second aspect, in a third possible implementation manner, The sending the applicable access point APN to the data gateway PGW further includes:

When detecting that the current access point APN of the terminal cannot be used to transmit the number of the target application According to the packet, generating second description information including the feature description information of the target application and the prohibition indication, The prohibition indication includes a current access point APN;

The second description of the feature description information and the prohibition indication including the target application based on the PCC rule The information is sent to the data gateway PGW.

In a third aspect, the embodiment of the present invention further provides a method for selecting an access point, including:

Sending feature description information of the target application data packet to the target application when it is detected a network side, so that the network side detects, according to the feature description information, whether the current access point APN of the terminal is A data packet that can be used to transmit the target application;

Receiving, by the network side, a target access that can be used to transmit the target application data packet Pointing the indication information of the APN, and transmitting, by the target access point APN, the data packet of the target application;

The indication information returned by the network side includes: a data gateway PGW, policy and charging. The function server PCRF or the access network discovers and indicates the indication information returned by the function server ANDSF.

With reference to the third aspect, in a first possible implementation, the receiving the network side returns The indication information including the target access point APN that can be used to transmit the target application data packet is passed Transmitting, by the target access point APN, the data packet of the target application, including:

If the indication information including multiple access point APNs returned by the network side is received, according to the The priority parameter of the access point APN included in the indication information is determined to be used for transmitting the target application Target access point APN of the data packet;

Transmitting data of the target application through the target access point APN.

In a fourth aspect, the embodiment of the present invention further provides an apparatus for selecting an access point, including:

An acquiring module, configured to acquire first feature description information of a target application of the terminal;

a detecting module, configured to determine the end according to the first feature description information acquired by the acquiring module Whether the current access point APN of the terminal can be used to transmit the data packet of the target application;

a determining module, configured to: when the detecting module determines that the current access point APN is unavailable for transmitting the Determining, for the target application, a target access point for the terminal that can be used to transmit the data packet APN;

An indication module, configured to indicate the target access point determined by the terminal by using the determining module APN transmits a data packet of the target application;

With reference to the fourth aspect, in a first possible implementation manner, the acquiring module includes:

a request receiving unit, configured to receive a bearer resource modification request sent by the terminal, where the bearer resource The first modification description information of the target application is included in the source modification request;

An information extracting unit, configured to provide a bearer resource modification request received from the request receiving unit Taking the first feature description information.

In conjunction with the first possible implementation of the fourth aspect, in a second possible implementation manner,

The detection module includes:

a transmitting unit, configured to send the first feature description information to a policy and charging function server PCRF, requesting the PCRF to detect whether the current access point APN of the terminal can be used for the transmission station The data packet of the target application is further configured to receive a detection result returned by the PCRF in response to the request;

a result determining unit, configured to include, in the detection result, data that can be used to transmit the target application Determining, by the target access point APN of the packet, that the current access point APN of the terminal cannot be used to transmit the The data packet of the target application;

The determining module includes:

An access point extracting unit, configured to extract the target access from the detection result returned by the PCRF Point APN;

a first access point determining unit, configured to use the target access point extracted by the access point extracting unit The APN is determined to be the target access point APN of the terminal.

With reference to the fourth aspect, in a third possible implementation, the detecting module includes:

a detecting unit, configured to determine whether the first feature description information and the preset data description parameter are Match

a matching determining unit, configured to determine, when the detecting unit determines that the result is a match, The current access point APN cannot be used to transmit data packets of the target application.

In conjunction with the third possible implementation of the fourth aspect, in a fourth possible implementation manner,

The detecting unit is specifically configured to: determine whether an item exists in the first feature description information or The plurality of description information is the same as one or more of the description information in the second feature description information;

The determining module includes:

a parsing unit, configured to: when the detecting unit determines that the result is the first feature description information One or more pieces of description information and second feature description information included in the event subscription parameter One or more pieces of description information are the same, and the behavior description parameter is a parameter of the indication reporting server The first feature description information is sent to the policy and charging function server PCRF;

a second access point determining unit, configured to receive the first sent by the PCRF according to the parsing unit Target access point that can be used to transmit the data packet of the target application obtained by the feature description information The APN determines the target access point APN as the target access point APN of the terminal.

In conjunction with the third possible implementation of the fourth aspect, in a fifth possible implementation manner,

The detecting unit is specifically configured to: determine whether an item exists in the first feature description information or The plurality of description information is the same as one or more of the description information in the third feature description information;

The determining module includes:

An obtaining unit, configured to: when the detecting unit determines that the result is the first feature description information One or more description information and one or more description information in the third feature description information When the same, the at least one access point APN included in the access configuration parameter is obtained;

a third access point determining unit, configured to acquire at least one access point APN from the acquiring unit Selecting an access point APN corresponding to the first feature description information as being capable of transmitting the destination The target access point APN of the packet of the application.

In combination with the fourth aspect, or the first possible implementation of the fourth aspect, or the fourth aspect a second possible implementation, or a third possible implementation of the fourth aspect, or a fourth party The fourth possible implementation of the face, or the fifth possible implementation of the fourth aspect, in the sixth In a possible implementation manner, the indication module is specifically configured to:

In conjunction with the sixth possible implementation of the fourth aspect, in a seventh possible implementation, include:

a receiving module, configured to: if the current access point APN is not used to transmit the data packet of the target application, Receiving a prohibition indication sent by the policy and charging function server PCRF based on the PCC rule, the prohibition The stop indication includes the current access point APN;

a generating module, configured to generate a forbidden class including the first feature description information and the prohibition indication The flow template is pushed to the terminal by the default bearer.

In a fifth aspect, the embodiment of the present invention further provides another apparatus for selecting an access point, including:

An information acquiring module, configured to acquire feature description information of the target application, where the feature description information packet Source IP address, destination IP address, source port number, destination port number, protocol type, At least one of the application identifiers;

a determining module, configured to determine, according to the feature description information obtained by the information acquiring module, Whether the current access point APN of the terminal can be used to transmit the data packet of the target application;

An access point determining module, configured to: when the determining result of the determining module is negative, determine that the information can be used for transmitting Transmitting a target access point APN of the data packet of the target application;

And a sending module, configured to send the target access point APN to the data gateway PGW.

With reference to the fifth aspect, in a first possible implementation, the access point determining module includes:

a request sending unit, configured to send, by using an access point, the acquired feature description information To the access network discovery and selection function server ANDSF;

An information receiving unit, configured to receive, by the ANDSF, an access sent by the request sending unit The target access point APN that can be used to transmit the data packet of the target application returned by the point request.

In combination with the fifth aspect, or the first possible implementation of the fifth aspect, in the second possible In an implementation manner, the sending module includes:

a first generating unit, configured to generate feature description information including the target application, and the target connection First indication information of the inbound APN;

a first information sending unit, configured to generate the first generated by the first generating unit based on a PCC rule The indication information is sent to the data gateway PGW.

In combination with the second possible implementation of the fifth aspect, in a third possible implementation manner, The sending module further includes:

a second generating unit, configured to detect that the current access point APN of the terminal cannot be used for transmitting Generating the feature description information and the prohibition finger including the target application when the data packet of the target application is input The second indication information, where the prohibition indication includes a current access point APN;

a second information sending unit, configured to generate the second generated by the second generating unit based on a PCC rule The indication information is sent to the data gateway PGW.

In a sixth aspect, the embodiment of the present invention further provides another apparatus for selecting an access point, including:

a sending module, configured to: feature the target application data packet when detecting that the target application is running The description information is sent to the network side, so that the network side detects the current connection of the terminal according to the feature description information. Whether the ingress APN can be used to transmit the data packet of the target application;

An access module, configured to receive, when received by the network side, the data that can be used to transmit the target application When the indication information of the target access point APN of the packet is transmitted, the target is transmitted through the target access point APN Application data packet;

With reference to the sixth aspect, in a first possible implementation manner, the access module includes:

An access point determining unit, configured to receive, when receiving, a finger of the multiple access point APN returned by the network side When the information is displayed, it is determined according to the priority parameter of the access point APN included in the indication information. a target access point APN for transmitting a data packet of the target application;

a transmission control unit, configured to determine, by the access point determining unit, a target access point APN Transmitting the data packet of the target application.

In a seventh aspect, an embodiment of the present invention further provides a computer storage medium, where the computer stores The medium stores a program, and when the program is executed, the method for selecting the access point of the first aspect is performed Part or all of the steps.

In an eighth aspect, an embodiment of the present invention further provides a computer storage medium, where the computer stores The medium stores a program, and when the program is executed, the method for selecting the access point of the second aspect is performed Part or all of the steps.

In a ninth aspect, an embodiment of the present invention further provides a computer storage medium, where the computer stores The medium stores a program, and when the program is executed, the method for selecting the access point of the third aspect is performed Part or all of the steps.

In a tenth aspect, the embodiment of the present invention further provides a network device, including: a receiver, a transmitter, Memory and processor,

Wherein, the processor performs the following steps:

In conjunction with the tenth aspect, in a first possible implementation, the processor is performing the obtaining The first feature description information of the target application of the terminal is specifically performed as follows:

In conjunction with the first possible implementation of the tenth aspect, in a second possible implementation manner, Determining, by the processor, the current access point of the terminal according to the first feature description information The APN cannot be used to transmit the data packet of the target application, and the following steps are performed:

Determining, by the processor, the number of the terminal that can be used to transmit the target application According to the target access point APN of the package, the following steps are performed:

In conjunction with the tenth aspect, in a third possible implementation, the processor is performing the Determining, by the first feature description information, that the current access point APN of the terminal is not used to transmit the The data packet of the target application is as follows:

In conjunction with the third possible implementation of the tenth aspect, in a fourth possible implementation manner,

The processor performs the determining the first feature description information and the preset data description parameter If the numbers match, perform the following steps:

In conjunction with the third possible implementation of the tenth aspect, in a fifth possible implementation manner,

Determining, by the processor, that the applicable access point APN is determined for the terminal, specifically executing the following step:

If the judgment result is that one or more description information and the presence information are present in the first feature description information If the one or more description information in the third feature description information is the same, the access configuration parameter is obtained. At least one access point APN included in the number;

In combination with the tenth aspect, or the first possible implementation of the tenth aspect, or the tenth aspect a second possible implementation, or a third possible implementation of the tenth aspect, or a tenth party The fourth possible implementation of the face, or the fifth possible implementation of the tenth aspect, in the sixth In a possible implementation manner, the processor is performing the indication that the terminal accesses by using the target The point APN transmits the data packet of the target application, and the specific steps are as follows:

In conjunction with the sixth possible implementation of the tenth aspect, in a seventh possible implementation, The processor also performs the following steps:

In an eleventh aspect, an embodiment of the present invention further provides a server, including: a receiver, a transmitter, and Memory and processor,

Wherein, the processor performs the following steps:

Sending the target access point APN to the data gateway PGW.

In conjunction with the eleventh aspect, in a first possible implementation, the processor is performing the Determining a target access point APN that can be used to transmit the data packet of the target application, and performing the following steps Step:

In combination with the eleventh aspect, or the first possible implementation of the eleventh aspect, In an implementation manner, the processor is configured to send the target access point APN to the data. The gateway PGW performs the following steps:

In conjunction with the second possible implementation of the eleventh aspect, in a third possible implementation manner, The processor also performs the following steps:

In a twelfth aspect, the embodiment of the present invention further provides a terminal, including: a receiver, a transmitter, Memory and processor,

Wherein, the processor performs the following steps:

In conjunction with the twelfth aspect, in a first possible implementation, the processor is performing the Receiving, by the network side, a target access point APN that can be used to transmit the target application data packet And indicating, by the target access point APN, the data packet of the target application, specifically Perform the following steps:

Transmitting the data packet of the target application through the target access point APN.

Embodiments of the present invention have the following beneficial effects:

The embodiment of the present invention can detect the end by acquiring the feature description information corresponding to the target application on the terminal. Whether the currently selected APN can be used to transmit the data packet of the target application, and the detection result is If no, the correct APN is determined for the terminal in time, thereby avoiding the wrong selection of the APN. The resulting application data is unreachable and application creation fails.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will be implemented The drawings used in the examples or in the description of the prior art are briefly introduced, and obviously, the following description The drawings in the drawings are only some embodiments of the present invention, and will not be paid by one of ordinary skill in the art. Other drawings can also be obtained from these drawings on the premise of creative labor.

FIG. 1 is a schematic diagram of interaction of a method for selecting an access point according to an embodiment of the present invention;

2 is a schematic diagram of interaction of another method for selecting an access point according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of interaction of another method for selecting an access point according to an embodiment of the present invention; FIG.

4 is a schematic structural diagram of an apparatus for selecting an access point according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another apparatus for selecting an access point according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of still another apparatus for selecting an access point according to an embodiment of the present disclosure;

7 is a schematic diagram of one specific structure of the access point determining module of FIG. 6;

FIG. 8 is a schematic structural diagram of still another apparatus for selecting an access point according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a server according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

detailed description

The technical solution in the embodiment of the present invention will be clarified in the following with reference to the accompanying drawings in the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is apparent that the described embodiments are merely a part of the embodiments of the present invention, and are not All embodiments. Based on the embodiments of the present invention, one of ordinary skill in the art does not create All other embodiments obtained under the premise of sexual labor are within the scope of protection of the present invention.

FIG. 1 is an interactive diagram of a method for selecting an access point according to an embodiment of the present invention. Figure, specifically, the method includes:

S1001: The UE sends a bearer resource modification request.

In a specific embodiment, in a user equipment (User Equipment, UE) such as a mobile phone or a tablet computer The target application, such as a new application running, can pass the currently existing APN (Access Point Name, The PDN (Packet Data Network) corresponding to the access point name is transmitted. Used packet, but when the current PDN connected bearer is not suitable for transmitting the packet of the newly created application, The bearer resource modification process may be initiated, and the bearer resource modification request is sent to the MME (Mobility) Management Entity, Mobile Management Entity).

Specifically, the bearer resource modification request may carry the default inheritance of the PDN connection corresponding to the current APN. The EPS (Evolved Packet System) bearer identifier of the EPS to be modified, QoS (Quality of Service), characterization information, and so on.

The feature description information may be specifically flow description information, and may include a source IP address of the target application. Address, destination IP address, source port number, destination port number, protocol type, application ID, and so on. Enter one Step, the feature description information may also be TAD (Traffic Aggregate Description) The information is that the TAD is a set of the flow description information, that is, includes multiple pieces of flow description information.

S1002: The MME sends a bearer resource command to the SGW.

S1003: The SGW sends a bearer resource command to the PGW.

After receiving the bearer resource modification request sent by the UE, the MME may send a bearer resource command. (Bearer Resource Command) To the SGW, the SGW sends a bearer resource command to the PGW. Place The bearer resource command includes a user permanent identifier, a default bearer identifier, an EPS bearer identifier, and QoS. Feature description information, etc.

S1004: The PGW initiates an IP-CAN session modification process.

As an optional implementation manner, it is detected whether the current APN is correct, that is, whether the current APN can be For transmitting the target application data packet, the PGW (PDN) may be triggered by the bearer resource modification process. Gateway, the data gateway sends the feature description information of the newly created application to the PCRF (Policy and Charging Rules Function, requesting PCRF to detect the UE Whether the current APN can be used to transmit the packet of the newly created application. The PGW is the current PDN pair The PGW should be. Specifically, the PGW sends the feature description information to the PCRF through IP-CAN. The session modification process sends the feature description information to the PCRF.

S1005: The PCRF determines whether the current APN is correct. If not, determine the correct APN.

S1006: The PCRF replies with the correct APN.

The PCRF detects whether the current APN selection is correct based on the feature description information of the newly created application, that is, Whether it can be used to transmit the data packet of the newly created application, for example, based on the IP address of the newly created application server. The feature information such as the address or the application identifier determines whether the current APN is correct, and when the PCRF determines the current APN. If it is incorrect, it determines for the UE the APN that can be used to transmit the newly created application packet.

Further, the PCRF may be in the IP-CAN session modification process of replying to the PGW. The binding information of the description information and its correct APN is pushed to the PGW. Specifically, the binding relationship can be Is delivered by the PCC rule, such as including the feature description information of the application in the PCC rule, and The same PCC rules carry the correct APN information.

Further, if it is detected that the current APN cannot be used to transmit the application data packet, the PCRF The feature description information and the prohibition indication of the application data packet may be sent to the PGW based on the PCC rule. The current APN is included in the prohibition indication.

The PGW may extract, from the detection result returned by the PCRF, a data packet that can be used to transmit the newly created application. The APN determines the APN as the target APN of the terminal, that is, the correct APN.

S1007: The PGW sends an update bearer request and pushes the correct APN.

Optionally, the PGW may send the feature description information and its correct APN by updating the bearer request. It is sent to the SGW (Serving Gateway) and the MME.

Further, if the PGW receives the prohibition indication sent by the PCRF, the PGW may generate the new The feature description information of the application and the prohibited flow template of the prohibition indication (Traffic Flow Template, TFT), the prohibition indication includes an APN that cannot be used to transmit the newly created application packet (if detected If the current APN cannot be used to transmit the newly created application packet, the prohibition indication may include the current APN). Binding the forbidden TFT to the default bearer of the PDN connection corresponding to the current APN, and updating the The bearer request sends the forbidden TFT to the SGW and the MME.

S1008: The MME returns the correct APN to the UE by using an RRC connection configuration.

The MME can be configured through RRC (Radio Resource Control) connection configuration. The feature description information corresponding to the newly created application and its corresponding correct APN and prohibited class Information such as TFT is sent to the current UE.

The embodiment of the present invention can obtain the feature in the bearer resource modification request sent by the current UE. Descriptive information to detect whether the currently selected APN can be used to transmit the data packet of the target application, and When the detection result is no, the correct APN is determined for the current UE in time, and the selection by the APN is avoided. The application data is unreachable due to errors and the application establishment fails.

Referring to FIG. 2, it is an interactive diagram of another method for selecting an access point according to an embodiment of the present invention. Figure, specifically, the method includes:

S2001: The UE sends a target application data packet.

S2002: The PGW determines whether the current APN can be used to transmit the data packet of the target application.

When the UE runs the target application, such as a newly created application, and selects the PDN connection corresponding to the current APN. When transmitting a data packet, the PGW can obtain the feature description information corresponding to the data packet of the newly created application, and base the Determining, by the preset data description parameter, whether the current APN can be used to transmit the data packet of the target application, The preset data description parameters may include event subscription parameters or pre-configured access configuration parameters. its The event subscription parameter can be delivered by the PCRF according to a preset time interval.

Specifically, the PGW can detect the feature description information of the newly created application and the preset data description. Whether the parameters match, and when a mismatch is detected, it indicates that the current APN cannot be used to transmit the Create a new application package. The event subscription parameter includes preset feature description information, and includes Knowing the corresponding behavior description parameter of the PGW when detecting a data packet, the behavior description parameter includes Report the server, discard the data packet and other parameters. The access configuration parameter is pre-defined by the operator or other related personnel. Configured static configuration parameters, including preset feature description information and at least one APN.

S2003: If no, the PGW replies to the correct APN or reports to the server.

Optionally, determining whether the current APN can be used to transmit the data packet of the target application may be determined by Whether one or more description information exists in the feature description information corresponding to the current target application and the connection One or more of the description information included in the configuration parameter included in the configuration parameter is the same. further If the judgment result is the same, it may indicate that the current APN cannot be used to transmit the application data packet. The APN information included in the access configuration parameter may be further obtained, and selected from the APN information. The APN corresponding to the feature description information of the target application, and determining the APN as the target of the current UE APN.

Specifically, it may be pre-defined for certain specific data packets, such as including a certain type of application identifier in advance. Or the packet containing the specific protocol type is configured with the correct correct APN, and the PGW detects this. For some specific data packets, the application identifier of the data packet can be obtained directly from the access configuration parameter. Or the APN corresponding to the protocol type, and the acquired APN is determined to be used to transmit the current new application. The target APN.

Optionally, determining whether the current APN can be used to transmit the data packet of the target application, and determining Whether one or more description information and the presence information exist in the feature description information corresponding to the current target application One or more of the description information included in the event subscription parameter is the same. Enter one If the result of the determination is the same, and the behavior description parameter is the parameter of the indication reporting server If the number is used, the corresponding feature description information of the target application may be sent to the PCRF to obtain the correct APN.

Further optionally, if the feature description information of the acquired data packet is related to the current flow template of the PGW There is no match in the flow description information contained in the (Traffic Flow Template, TFT), and the above If there is no match in the feature description information in the event subscription parameter, the current data packet can be directly discarded.

S2004: The PGW indicates to the reporting server to obtain the correct APN.

When the PCRF is reported based on the behavior description, the current PGW can be repaired by initiating an IP-CAN session. The process is changed, and the feature description information and the application identifier of the received target application data packet are sent to the PCRF. The application identifier may be included in the packet feature description information, or may be based on a deep packet solution. Analysis and knowledge.

S2005: The PCRF replies to the correct APN.

S2006: The PGW returns the correct APN to the UE.

The PCRF is based on the feature description information of the application data packet, for example, based on the newly created application server. The feature information such as the destination IP address or the application identifier determines the correct APN and is based on the PCC rules. The feature description information corresponding to the data packet and the determined correct APN are returned to the PGW.

If the PGW receives the APN returned by the PCRF according to the feature description information, it may further indicate The current APN cannot be used to transmit the application data packet, that is, the current APN is incorrect, and the PCRF can be returned. The returned APN is determined to be the target APN of the UE.

The PGW will obtain the correct parameters based on the preset data description parameters or the PCC rules issued by the PCRF. APN is the target APN, the characterization information corresponding to the application data packet, and the prohibited classes that may be included. The TFT or the like is transmitted to the current UE. The GW describes the characterization information corresponding to the application data packet and the correct The process of pushing information to the UE, such as the APN and possibly the prohibited TFT, is the same as the embodiment corresponding to FIG. The corresponding description will not be repeated here.

Embodiments of the present invention may be implemented by using the feature description information of the acquired target application data packet. Feature description information included in the event subscription parameters delivered by the PCRF or preset access configuration parameters For comparison, if there is a match between the two, it may indicate that the currently selected APN cannot be used for transmission. Lose the packet for the target application. Further, when it is judged that the current APN is not applicable, the preset can also be Select the correct APN or report the PCRF to obtain the correct APN in the APN information. The correct APN is determined for the current UE.

Referring to FIG. 3, it is an interaction diagram of another method for selecting an access point according to an embodiment of the present invention. Figure, specifically, the method includes:

S3001: The PGW obtains feature description information corresponding to the target application data packet.

When the target application is running, such as a new application, the UE connects through the PDN corresponding to the current APN. Transmitting the application data packet, or initiating bearer resource modification when the current PDN connection bearer is not suitable When requested, the PGW may obtain the feature description letter included in the application data packet or the bearer resource modification request. interest.

S3002: The PGW initiates a session modification process, and sends the feature description information to the PCRF.

S3003: The PCRF detects that the packet is not suitable for transmission in the current session.

The PGW may map the target application data packet corresponding to the feature by initiating an IP-CAN session modification process. The information is pushed to the PCRF. Specifically, sending the feature description information to the PCRF may be at the PGW. Triggered when receiving a bearer resource modification request initiated by the UE, that is, triggered by the control plane; or The feature description information and the feature description information included in the event subscription parameter are detected by the PGW. Matching, and the behavior description parameter is triggered when the parameter is reported to the server, that is, by the user. Face trigger. The above event subscription parameters can be delivered to the PGW by the PCRF. PCRF can be based on this feature Determining the current UE by using feature information such as the destination IP address or application identifier corresponding to the target application in the information Whether the APN can be used to transmit packets of the target application.

S3004: The PCRF sends an APN request to the ANDSF.

S3005: ANDSF returns the correct APN.

Optionally, if the PCRF determines that the application data packet should not be transmitted in the current session, that is, the current When the APN cannot be used to transmit the application data packet, it can also initiate an APN request to the ANDSF server. Through PCRF and ANDSF (Access Network Discovery and Selection Function, access The interface between the network discovery and selection function sends the feature description information corresponding to the target application to ANDSF, so that the ANDSF obtains the correct APN based on the feature description information.

The ANDSF server selects the correct APN based on the received feature description information, that is, can be used Transmitting the APN of the application data packet, for example, according to the destination IP address in the feature description information or Apply the feature information such as the identifier to determine the correct APN and reply the correct APN to the PCRF.

S3006: PCRF returns the correct APN to PGW.

S3007: The PGW returns the correct APN to the UE.

Optionally, after the PCRF receives the APN replied by the ANDSF server, the APN may be The target application binds the corresponding feature description information, and pushes the binding relationship to the PGW. by The PGW will describe the feature description information and its correct APN, and possibly the prohibited TFTs. The process of pushing to the UE is the same as that of the embodiment corresponding to FIG. 1 and will not be described here.

Further optionally, the ANDSF server may also communicate with the current UE, such as The S14 interface directly pushes the APN policy to the UE. The target application packet is included in the APN policy. Feature description information, APN information, and APN priority indication parameters, the priority indication parameter may be To indicate whether the APN can be used by the data packet, for example, can be set when the priority indication parameter When it is a special value (such as 254, 255), it indicates that the application data packet is forbidden to use the APN. The APN policy includes at least one APN.

Further, after receiving the APN policy, the UE may describe the feature in the APN policy. The information is matched with the application data packet, and if the matching is successful, the corresponding information corresponding to the feature description information is used. The APN transmits the application packet. If the PDN connection to the APN is not currently established, the UE initiates The connection establishment process to the PDN of the APN.

The embodiment of the present invention can send the feature description information of the application data packet acquired by the PGW. Up to the PCRF, and detecting, by the PCRF according to the feature description information, that the current APN cannot be used for transmitting the When the data packet is applied, the feature description information is pushed to the ANDSF server, and the ANDSF service Obtaining the correct APN corresponding to the feature description information, so as to determine positively for the current UE in time The exact APN.

FIG. 4 is a schematic structural diagram of an apparatus for selecting an access point according to an embodiment of the present invention. The device may be specifically configured in a network node such as a PGW (PDN Gateway, data gateway). Specifically, the device includes an obtaining module 11, a detecting module 12, a determining module 13, and an indicating module. 14. among them,

The obtaining module 11 is configured to acquire first feature description information of a target application of the terminal.

In a specific embodiment, the PGW may refer to the correlation of the PGW in the corresponding embodiment of FIG. 1 to FIG. 3. Description, can launch a target application such as a new application on a user terminal such as a mobile phone or a tablet computer, and pass When the existing APN transmits the data packet of the newly created application, or the PDN corresponding to the current APN. The connected bearer is not suitable for transmitting the data packet of the newly created application, and receives the bearer resource modification sent by the terminal. When requested, the obtaining module 11 triggers acquiring the information carried in the application data packet or carried in the bearer resource modification request. Feature description information. The PGW is a PGW corresponding to the current PDN.

Specifically, the feature description information may be specific to the flow description information, and may include a new application source/purpose. IP address, source/destination port number information, protocol type and application identifier, etc. Further, the feature The description information may also be TAD (Traffic Aggregate Description) information, which The TAD is a set of the foregoing flow description information, that is, includes multiple pieces of flow description information.

The detecting module 12 is configured to use the first feature description information acquired by the acquiring module 11 Determining whether the current access point APN of the terminal can be used to transmit a data packet of the target application.

In a specific embodiment, the detecting module 12 can determine the feature description acquired by the acquiring module 11 Whether the information matches the preset data description parameter to determine whether the current APN is correct, that is, the current APN. Can be used to transfer packets of this newly created application. Further, the detection module 12 can also obtain The feature description information of the newly created application obtained by the module 11 is sent to the PCRF (Policy and Charging Rules Function, the policy and accounting function server), so that the PCRF detects the current APN Whether the corresponding PDN can be used to transmit the data packet of the newly created application.

The determining module 13 is configured to: when the detecting module 12 determines that the current access point APN is unavailable Determining, for the terminal, a data packet that can be used to transmit the data packet when transmitting the data packet of the target application. Target access point APN.

The indication module 14 is configured to indicate the target that is determined by the terminal by using the determining module The standard access point APN transmits the data packet of the target application.

If the detection module 12 detects that the current APN is incorrect, the APN cannot be used to transmit the new The data packet of the application may be compared according to the feature description information of the newly created application acquired by the obtaining module 11 For example, according to the feature information such as the destination IP address or the application identifier corresponding to the newly created application, The correct APN can be used to transmit the APN corresponding to the newly created application packet. The correct APN Can be by PGW, PCRF or ANDSF (Access Network Discovery and Selection Function, access network discovery and selection function) based on the application of the new application feature description information acquisition APN.

Further, the indicating module 14 may describe the determined correct APN and the feature of the newly created application. Binding the information and indicating the feature description information of the newly created application after binding The APN is pushed to the current terminal.

The embodiment of the present invention can be detected by acquiring feature description information corresponding to the target application on the terminal. Detecting whether the currently selected APN of the terminal can be used to transmit the data packet of the target application, and can detect the node If the value is no, the correct APN is determined for the terminal in time, thereby avoiding the wrong selection due to the APN. Mistakes caused by application data unreachability and application establishment failure.

FIG. 5 is a schematic structural diagram of another apparatus for selecting an access point according to an embodiment of the present invention. The device includes an acquisition module 11 of the selection device of the access point, a detection module 12, and a determination. The module 13 and the indication module 14 , specifically, in the embodiment of the present invention, the acquisition module 11 can Specifically include:

The request receiving unit 111 is configured to receive a bearer resource modification request sent by the terminal, where the The first feature description information of the target application is included in the resource modification request.

The information extracting unit 112 is configured to modify the bearer resource received from the request receiving unit 111. The first feature description information is extracted from the request.

In a specific embodiment, when a target application in a user terminal such as a mobile phone is running, for example, when a new application is run, The existing APN transmission data packet, if the PDN corresponding to the APN is not suitable for transmission To create a new application data packet, you can initiate a bearer resource modification process and send a bearer resource modification request to The PGW corresponding to the PDN, the bearer resource modification request carries the feature of the newly created application data packet Description. If the request receiving unit 111 receives the bearer resource modification request, the information extracting unit 112 may extract feature description information of the application data packet from the request.

Further, in the selecting device of the access point according to the embodiment of the present invention, the detecting module 12 can specifically include:

The transmitting unit 121 is configured to send the first feature description information to a policy and charging function service. The PCRF is configured to request the PCRF to detect whether the current access point APN of the terminal can be used for transmitting Transmitting a data packet of the target application, and further configured to receive a detection node returned by the PCRF in response to the request fruit.

a result determining unit 122, configured to: when the detection result includes, can be used to transmit the target application When the target access point APN of the data packet is determined, it is determined that the current access point APN of the terminal cannot be used for transmission. The data packet of the target application.

Further, in the embodiment of the present invention, the determining module 13 may specifically include:

An access point extracting unit 131, configured to extract the target from the detection result returned by the PCRF Access point APN.

a first access point determining unit 132, configured to use the target extracted by the access point extracting unit 131 The access point APN is determined to be the target access point APN of the terminal.

If the PGW receives the APN information returned by the PCRF, it may pass through the access point extracting unit 131. Extracting the APN, the first access point determining unit 132 determines the extracted APN as the new one. Apply the correct APN corresponding to it.

Further optionally, the detecting module 12 may further include:

The detecting unit 123 is configured to determine that the first feature description information and the preset data description parameter are No match

The matching determining unit 124 is configured to determine, when the detecting unit 123 determines that the result is a match, The current access point APN of the terminal cannot be used to transmit the data packet of the target application.

In a specific embodiment, the feature description letter of the currently acquired data packet may be compared by the detecting unit 123. Whether the information matches the preset data description parameters to determine whether the current APN is correct. Among them, the pre The set data description parameter may be an event subscription parameter or may be a pre-configured access configuration parameter. The event subscription parameter may be sent by the PCRF according to a preset time interval, and the event subscription parameter The number includes second feature description information and a behavior description parameter, and the behavior description parameter includes an indication report service Server or discard the parameters of the packet.

Optionally, if the preset data description parameter is an event subscription parameter delivered by the PCRF, The detecting unit 123 is specifically configured to: determine whether an item exists in the first feature description information or The plurality of description information is the same as one or more of the description information of the second feature description information. Enter one The determining module 13 may specifically include:

The parsing unit 133 is configured to: when the detecting unit 123 determines that the first feature description information is stored In the one or more description information and the second feature description information included in the event subscription parameter One or more pieces of description information are the same, and the behavior description parameter is the indication reporting server When the parameter is used, the first feature description information is sent to the policy and charging function server PCRF.

a second access point determining unit 134, configured to receive the PCRF according to the parsing unit 133 An access point APN obtained by sending the first feature description information, and determining the access point APN as The target access point APN of the terminal.

If the detecting unit 123 determines the feature description information and event subscription corresponding to the newly created application data packet There is a match in the feature description information included in the parameter, for example, the application identifiers of the two are detected to be the same. Or the destination IP address is the same, and the behavior description parameter is an indication reporting server, The analyzing unit 133 sends the obtained feature description information corresponding to the newly created application to the PCRF to request positive The correct APN, the second access point determining unit 134 may determine the returned APN as the APN of the terminal.

Further optionally, if the preset data description parameter is a pre-configured access configuration parameter, The access configuration parameter includes third feature description information and at least one APN, and the checklist The element 123 is specifically configured to: determine whether one or more description letters exist in the first feature description information The information is the same as one or more of the description information in the third feature description information. Further, the The determining module 13 may further include:

The obtaining unit 135 is configured to: when the detecting unit 123 determines that the first feature description information is stored One or more description letters in one or more description information and the third feature description information When the information is the same, the at least one APN included in the access configuration parameter is obtained.

a third access point determining unit 136, configured to acquire at least one APN from the acquiring unit 135 Selecting an APN corresponding to the first feature description information as being capable of transmitting the target application The target APN of the packet.

Specifically, the data package may be pre-defined for certain applications, such as pre-existing for a certain type of application Knowledge, or application data packets containing specific protocol types, configure the correct correct APN, checklist The element 123 obtains a single when it detects that the newly created application data packet matches the preset specific application data packet. Element 135 can obtain pre-configured APNs directly from the access configuration parameter, and pass the third The access point determining unit 136 selects, from the preset types of APNs, the response to the newly created application packet. Using an APN corresponding to the identity or protocol type as a target that can be used to transmit the target application data packet APN.

The determining module 13 of the device in the embodiment of the present invention may include an access point extracting unit 131 and a first access point determining unit 132, a parsing unit 133, and a second access point determining unit 134, acquiring a single The element 135 and the third access point determining unit 136 are any one or more of the three unit combinations, and are implemented by the present invention. The example is not limited.

Further, the indication module 14 of the device in the embodiment of the present invention may be specifically configured to:

Further, in the embodiment of the present invention, the device may further include:

The receiving module 15 is configured to detect that the current APN cannot be used to transmit the target application data packet Receiving, by the receiving policy and charging function server PCRF, a prohibition indication sent based on the PCC rule, The prohibition indication includes the current APN;

The generating module 16 is configured to generate a ban including the first feature description information and the prohibition indication The flow template is terminated, and the forbidden flow template is pushed to the terminal by using a default bearer.

If the receiving module 15 receives the prohibition indication sent by the PCRF, it may generate by using the generating module 16. A traffic flow template (Traffic Flow Template) containing the application description information and the prohibition indication The TFT is bound to the default bearer of the PDN connection corresponding to the current APN. ban The stop indication includes an APN that cannot be used to transmit the packet of the newly created application. Further, the prohibition The class TFT may include a set of feature description information of the application and its corresponding prohibition indication.

The MME can establish the new connection through RRC connection reconfiguration. Apply the corresponding feature description information and its correct APN, forbidden TFT, etc. to the current end. end.

The embodiment of the present invention can be detected by acquiring feature description information corresponding to the target application of the terminal. Whether the APN currently selected by the terminal can be used to transmit the data packet of the target application, and the detection result is If no, directly select the correct APN from the preset APN information or report the PCRF to Obtain the correct APN, determine the correct APN for the terminal in time, and avoid the choice of APN. The application data is unreachable due to errors and the application establishment fails.

FIG. 6 is a schematic structural diagram of another apparatus for selecting an access point according to an embodiment of the present invention. The device may be specifically configured in a server such as a PCRF. Specifically, the device may include information. The acquisition module 17, the determination module 18, the access point determination module 19, and the transmission module 20. among them,

The information obtaining module 17 is configured to acquire feature description information of the target application.

The PCRF of the embodiment of the present invention may refer to the phase of the PCRF in the corresponding embodiment of FIG. 1 to FIG. 3. Off description.

The feature description information may include a destination application destination source IP address, a destination IP address, and a source. The port number and destination port number may also include the protocol type and application identifier.

The determining module 18 is configured to obtain the feature description obtained by the information acquiring module 17 Determining whether the current access point APN of the terminal can be used to transmit the number of the target applications According to the package.

After the information acquiring module 17 receives the feature description information sent by the PGW, the determining module 18 The feature description information such as the destination IP address or the application identifier in the feature description information may be determined. Whether the PDN corresponding to the APN of the front terminal can be used to transmit the data packet of the target application.

The access point determining module 19 is configured to determine, when the determining module 18 determines that the result is negative, A target access point APN that can be used to transmit a data packet of the target application.

The sending module 20 is configured to send the applicable access point APN to the data gateway PGW.

If the judging module 18 judges that the current APN cannot be used to transmit the data packet of the target application, the The access point determining module 19 further obtains the feature description information based on the destination IP address or the application identifier. The correct APN, that is, can be used to transmit the APN corresponding to the target application data packet, and is sent by the sending module 20 The obtained correct APN is returned to the PGW as the target APN.

Further, in the embodiment of the present invention, the sending module 20 may include:

a first generating unit 201, configured to generate feature description information and the target that includes the target application The first indication information of the access point APN.

a first information sending unit 202, configured to generate the first generating unit 201 based on a PCC rule The first indication information is sent to the data gateway PGW.

The second generating unit 203 is configured to: when detecting that the current access point APN of the terminal is unavailable, Generating feature description information including the target application and transmitting the data packet of the target application The second indication information of the indication is included, and the current indication point APN is included in the prohibition indication.

a second information sending unit 204, configured to generate the second generating unit 203 based on a PCC rule The second indication information is sent to the data gateway PGW.

As an optional implementation manner, sending the target APN to the PGW may be through the first The generating unit 201 generates feature description information including the target application and a first indication of the target APN Information, and the first information transmitting unit 202 will include features of the target application based on PCC rules. The description information and the first indication information of the applicable APN are delivered to the PGW.

Further, when the second generating unit 203 detects that the current APN of the terminal is unavailable, When transmitting the data packet of the target application, generating feature description information including the target application and The second indication information of the indication is prohibited, and the second information sending unit 204 may include the The feature description information of the newly created application and the second indication information of the prohibition indication are sent to the data gateway PGW.

Further optionally, please refer to FIG. 7, which is one of the access point determining modules 19 of FIG. The specific structure diagram, the access point determining module 19 may specifically include:

a request sending unit 191, configured to request, by using an access point, the obtained feature description information Send to the access network discovery and selection function server ANDSF.

Further, if the determining module 18 applies the corresponding destination IP address or application identifier based on the target application The feature description information is used to determine that the PDN corresponding to the APN of the current terminal cannot be used to transmit the target application. The request sending unit 191 can also pass the PCRF and the ANDSF (Access Network) Interface between Discovery and Selection Function, access network discovery and selection function) The feature description information corresponding to the target application is sent to the ANDSF, so that the ANDSF describes the letter according to the feature Get the correct APN.

The information receiving unit 192 is configured to receive the ANDSF response to the request sending unit 191 The target access point returned by the sent access point request that can be used to transmit the data packet of the target application APN.

The ANDSF selects an appropriate APN according to the feature description information, for example, according to the feature description. The characteristic information such as the destination IP address or the application identifier in the information determines the correct APN for the terminal, that is, Can be used to transmit the APN of the newly created application packet, and reply to the PCRF, and the information receiving unit 192 is connected. The correct APN of the reply is received, and the APN can be determined as the APN of the current terminal.

The embodiment of the present invention can determine the current by using the feature description information corresponding to the acquired target application. Whether the selected APN can be used to transmit the data packet of the target application, and when the detection result is no, Determining, for the terminal, feature information such as an application identifier or a protocol type in the feature description information The correct APN, or send the feature description information to the ANDSF to make the ANDSF determine positive The correct APN can determine the correct APN for the terminal in time.

FIG. 8 is a schematic structural diagram of another apparatus for selecting an access point according to an embodiment of the present invention. The device may be specifically disposed in a terminal such as a mobile phone, a tablet computer, or a personal computer, and the terminal For the specific description of the UE in the corresponding embodiment of FIG. 1 to FIG. 3, in the embodiment of the present invention, The device can include a transmitting module 21 and an access module 22. among them,

The sending module 21 is configured to: when the target application is detected to be running, the target application data The feature description information of the packet is sent to the network side, so that the network side detects the terminal according to the feature description information. Whether the current access point APN can be used to transmit the data packets of the target application.

The access module 22, configured to receive, when received by the network side, can be used to transmit the target When the indication information of the target access point APN of the data packet is applied, the target access point APN is transmitted. The data packet of the target application.

After receiving the target APN returned by the network side, the access module 22 may describe the feature of the application. The information is matched and matched with the feature description information corresponding to the target APN. When the matching is successful, the table is The PDN transmission application data packet corresponding to the applicable APN can be used.

Further, in the embodiment of the present invention, the access module 22 may specifically include:

The access point determining unit 221 is configured to: when receiving the network side, returning multiple access point APNs And determining, according to the priority parameter of the access point APN included in the indication information, A target access point APN that can be used to transmit a data packet of the target application.

a transmission control unit 222, configured to determine, by the access point determining unit, a target access point The APN transmits the data packet of the target application.

Further, if the indication information returned by the network side includes multiple APNs, the access point The determining unit 221 may determine, according to the priority indication parameter of the APN included in the indication information, a target APN for transmitting a data packet of the target application, and the transmission control unit 222 passes the connection The target APN determined by the in-point determining unit 221 transmits the data packet of the target application.

Embodiments of the present invention may apply the target application data when detecting the target application running The feature description information of the packet is sent to the network side to enable the network side to detect whether the current APN can be used for transmission. The target applies the data packet, and when the network side judges that the result is no and returns the correct APN, the The APN is determined as the APN of the current terminal.

Further, please refer to FIG. 9, which is a structural composition of a network device according to an embodiment of the present invention. The network device of the embodiment of the present invention includes: a receiver 300, a transmitter 400, and a memory 200. And the processor 100, the memory 200 may be a high speed RAM memory, or may be non-unstable Non-volatile memory, such as at least one disk storage. As a computer A corresponding application or the like is stored in the memory 200 of the storage medium. The receiver 300, the transmitter 400, The data connection between the memory 200 and the processor 100 can be performed through the bus, and other Mode data connection. In the present embodiment, a bus connection will be described. Specifically, the embodiment of the present invention The network device may correspond to the PGW, and may further refer to the PGW in the corresponding embodiment of FIG. 1 to FIG. Related description.

The processor 100 performs the following steps:

Optionally, the processor 100 is configured to perform a first feature description of the target application of the acquiring terminal. Information, the specific steps are as follows:

Optionally, the processor 100 is configured to determine, according to the first feature description information, The current access point APN of the terminal cannot be used to transmit the data packet of the target application, and the specific execution is as follows: Next steps:

Determining, by the processor 100, that the terminal is configured to transmit the target application The target access point APN of the data packet is as follows:

Optionally, the preset data description parameter includes: an event subscription parameter, and the event subscription parameter The number includes second feature description information and a behavior description parameter, and the behavior description parameter includes an indication report service Server or discard the parameters of the packet;

The processor 100 performs the determining the first feature description information and the preset data description Whether the parameters match, the following steps are performed:

Determining whether one or more pieces of description information and the first part exist in the first feature description information One or more of the description information in the two feature description information is the same.

Optionally, the processor 100 determines, in the performing, that the terminal is configured to transmit the target The target access point APN of the data packet of the application is as follows:

Optionally, the preset data description parameter includes: preset access configuration parameters, and the access The configuration parameter includes third feature description information and at least one access point APN;

Determining whether one or more pieces of description information and the first part exist in the first feature description information One or more of the description information in the three feature description information is the same.

Optionally, the processor 100 determines, according to the performing, that the applicable access point APN is determined for the terminal, Specifically, perform the following steps:

Optionally, the processor 100 is performing the indication that the terminal passes the target access point The APN transmits the data packet of the target application, and performs the following steps:

Optionally, the processor 100 further performs the following steps:

Embodiments of the present invention may be implemented by using the feature description information of the acquired data packet from the PCRF. The feature description information contained in the sent event subscription parameter or the preset access configuration parameter is performed. Ratio, and when there is a match between the two, it is determined that the currently selected APN cannot be used for transmission purposes. The data package of the application. Further, when judging that the current APN is not suitable, it is also possible to Select the correct APN in the APN information or report the PCRF to obtain the correct APN, so as to facilitate Timely determine the correct APN for the terminal.

Further, please refer to FIG. 10, which is a structural composition of a server according to an embodiment of the present invention. The server of the embodiment of the present invention includes: a receiver 700, a transmitter 800, and a memory 600. And the processor 500, the memory 600 may be a high speed RAM memory, or may be non-unstable Non-volatile memory, such as at least one disk storage. As a computer A corresponding application or the like is stored in the memory 600 of the storage medium. The receiver 700, the transmitter 800, The data connection between the memory 600 and the processor 500 can be performed through the bus, or through other Mode data connection. In the present embodiment, a bus connection will be described. Specifically, the embodiment of the present invention The server may specifically correspond to the PCRF, and may further refer to the corresponding embodiments in FIG. 1 to FIG. A description of the PCRF.

The processor 500 performs the following steps:

Sending the target access point APN to the data gateway PGW.

Optionally, the processor 500 performs the determining to determine the number of applications that can be used to transmit the target application. According to the target access point APN of the package, the following steps are performed:

Optionally, the processor 500 is configured to send the target access point APN to the data. The gateway PGW performs the following steps:

Optionally, the processor 500 further performs the following steps:

The embodiment of the present invention can determine the currently selected APN pair by using the received feature description information. Whether the applicable PDN can be used to transmit the data packets of the target application, and based on the detection result is no, based on The feature information such as the application identifier or the protocol type in the feature description information is determined to be correct for the terminal. APN, or send the feature description information to the ANDSF to make the ANDSF determine the correct APN avoids the occurrence of application data unreachable due to APN selection errors.

Further, please refer to FIG. 11 , which is a structural composition diagram of a terminal according to an embodiment of the present invention. It is intended that the terminal of the embodiment of the present invention includes: a receiver 1100, a transmitter 1200, a memory 1000, and The processor 900, the memory 1000 may be a high speed RAM memory, or may be non-unstable Non-volatile memory, such as at least one disk storage. As a computer A corresponding application or the like is stored in the storage medium 1000 of the storage medium. The receiver 1100, the transmitter 1200, the memory 1000 and the processor 900 can be connected via a bus, or Data connection by other means. In the present embodiment, a bus connection will be described. Specifically, the present invention The terminal of the embodiment may be a user equipment such as a mobile phone or a tablet computer, and may further refer to FIG. 1 to FIG. 8 corresponds to a description of the UE in the embodiment.

The processor 900 performs the following steps:

Optionally, the performing, by the processor 900, when the receiving the network side returns, can be used for transmitting Transmitting the indication information of the target access point APN of the target application data packet by using the target access The point APN transmits the data packet of the target application, and the specific steps are as follows:

Embodiments of the present invention may apply data by using the target when detecting a running target application The feature description information of the packet is sent to the network side to enable the network side to detect whether the current APN can be used for the transmission destination. The application data packet is marked, and when the network side detection result is no, the APN returned by the network side is determined as The APN of the current terminal.

In several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method can be In other ways. For example, the device embodiments described above are merely illustrative, examples. For example, the division of the unit is only a logical function division, and there may be another stroke in actual implementation. Sub-mode, for example, multiple units or components can be combined or integrated into another system, or some special The sign can be ignored or not executed. Another point, the mutual coupling or direct coupling shown or discussed Or the communication connection may be an indirect coupling or communication connection through some interface, device or unit, which may be Electrical, mechanical or other form.

The unit described as a separate component may or may not be physically separated. The components displayed for the unit may or may not be physical units, ie may be located in one place, or It can also be distributed to multiple network elements. You can choose some or all of them according to actual needs. The unit is used to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in various embodiments of the present invention may be integrated in one processing unit. It is also possible that each unit physically exists alone, or two or more units may be integrated into one unit. in. The above integrated unit can be implemented in the form of hardware or hardware plus software. The form of the unit is implemented.

The above integrated unit implemented in the form of a software functional unit can be stored in a computer Read in the storage medium. The above software functional unit is stored in a storage medium, including several instructions To make a computer device (which can be a personal computer, server, or network device, etc.) or A processor performs some of the steps of the method described in various embodiments of the present invention. The aforementioned storage Media includes: U disk, mobile hard disk, read-only memory (ROM), random Various types of memory such as access memory (RAM), disk or optical disk can be stored. The medium of the program code.

It will be apparent to those skilled in the art that for the convenience and brevity of the description, only the above-mentioned functions are The division of the energy module is exemplified. In practical applications, the above functions can be allocated according to needs. Different functional modules are completed, that is, the internal structure of the device is divided into different functional modules to complete All or part of the functions described above. For the specific working process of the device described above, reference may be made to the foregoing Corresponding processes in the method embodiments are not described herein again.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than Limitations; although the invention has been described in detail with reference to the foregoing embodiments, Personnel should understand that they can still modify the technical solutions described in the foregoing embodiments, or Equivalent replacement of some or all of the technical features; and these modifications or replacements do not The essence of the technical solution is out of the scope of the technical solutions of the embodiments of the present invention.

Claims

A method for selecting an access point, comprising:

Obtaining first feature description information of the target application of the terminal;

Determining, according to the first feature description information, that the current access point APN of the terminal cannot be used for              Transmitting a data packet of the target application;

Determining, for the terminal, a target access point that can be used to transmit a data packet of the target application              APN;

Instructing the terminal to transmit a data packet of the target application by using the target access point APN;

The first feature description information includes a source IP address and a destination IP address of the target application.              At least one of an address, a source port number, a destination port number, a protocol type, and an application identifier.
The method of claim 1 wherein said acquiring a target application of the terminal              The first feature description information includes:

Receiving a bearer resource modification request sent by the terminal, where the bearer resource modification request includes              Describe the first feature description information;

Extracting the first feature description information from the bearer resource modification request.
The method of claim 2, wherein said describing according to said first feature              Determining that the current access point APN of the terminal cannot be used to transmit the data packet of the target application,              include:

Sending the first feature description information to the policy and charging function server PCRF to request the location              The PCRF detects whether the current access point APN of the terminal can be used to transmit the number of the target applications.              According to the package;

Receiving a detection result returned by the PCRF, if the detection result includes              The target access point APN of the data packet of the target application determines that the current access point APN of the terminal is not              A data packet that can be used to transmit the target application;

Determining, for the terminal, a target access point that can be used to transmit a data packet of the target application              APN, including:

Determining, by the detection result, the target access point APN as a target access of the terminal              Point APN.
The method of claim 1 wherein said describing according to said first feature              Determining that the current access point APN of the terminal cannot be used to transmit the data packet of the target application,              include:

Determining whether the first feature description information matches a preset data description parameter;

If it matches, determining that the current access point APN of the terminal cannot be used to transmit the target application              Packet.
The method of claim 4 wherein:

The preset data description parameter includes: an event subscription parameter, where the event subscription parameter includes              The second feature description information and the behavior description parameter, where the behavior description parameter includes an indication report server or a loss              Discard the parameters of the packet;

The determining whether the first feature description information matches the preset data description parameter includes:

Determining whether one or more pieces of description information and the first part exist in the first feature description information              One or more of the description information in the second feature description information is the same;

Determining, for the terminal, a target access point that can be used to transmit a data packet of the target application              APN, including:

If the judgment result is that one or more description information and the presence information are present in the first feature description information              One or more of the description information in the second feature description information is the same, and the behavior description parameter is              The parameter indicating the report to the server sends the first feature description information to the policy and charging function              Server PCRF;

Receiving, by the PCRF, the information acquired according to the first feature description information, for transmitting the target              a target access point APN of the applied data packet, and determining the target access point APN as the terminal              Target access point APN.
The method of claim 4 wherein:

The preset data description parameter includes: preset access configuration parameters, and the access configuration parameter                                        Included in the third feature description information and at least one access point APN;

The determining whether the first feature description information matches the preset data description parameter includes:

Determining whether one or more pieces of description information and the first part exist in the first feature description information              One or more of the description information in the three feature description information is the same;

Determining, for the terminal, a target access point that can be used to transmit a data packet of the target application              APN, including:

If the judgment result is that one or more description information and the presence information are present in the first feature description information              If the one or more description information in the third feature description information is the same, the access configuration parameter is obtained.              The at least one access point APN included in the number;

Selecting, corresponding to the first feature description information, from the at least one access point APN              The ingress APN acts as a target access point APN that can be used to transmit data packets for the target application.
The method according to any one of claims 1 to 6, wherein said indicating said terminal Transmitting, by the target access point APN, the data packet of the target application, including:

And transmitting the first feature description information and the update bearer request of the target access point APN And sent to the mobility management entity MME, so that the mobility management entity MME is controlled by radio resources The RRC connection configuration pushes the first feature description information and the target access point APN to the end end.
The method of claim 7 further comprising:

If the current access point APN cannot be used to transmit the data packet of the target application, the receiving policy and              The charging function server PCRF is based on a prohibition indication sent by the PCC rule, and the prohibition indication includes              Current access point APN;

Generating a forbidden class flow template including the first feature description information and the prohibition indication, and passing              The default bearer pushes the forbidden class flow template to the terminal.
A method for selecting an access point, comprising:

Obtaining feature description information of the target application, where the feature description information includes a source IP of the target application              Address, destination IP address, source port number, destination port number, protocol type, and application ID                                        One;

Determining, according to the feature description information, whether the current access point APN of the terminal can be used for transmitting              Transmitting a data packet of the target application;

If the determination result is no, determining target access of the data packet that can be used to transmit the target application              Point APN;

Sending the target access point APN to the data gateway PGW.
The method of claim 9 wherein said determining is operable to transmit said              The target access point APN of the target application's data packet, including:

Sending the obtained feature description information to the access network for discovery and selection by the access point request              Select function server ANDSF;

Receiving, by the ANDSF, the number of target applications that can be used to transmit the target application in response to the access point request              According to the target access point APN of the package.
The method of claim 9 or 10, wherein said accessing said target              The point APN is sent to the data gateway PGW, including:

Generating feature description information including the target application and the first finger of the target access point APN              Display information

Feature description information including the target application and the target access point will be included based on PCC rules              The first indication information of the APN is sent to the data gateway PGW.
The method of claim 11 further comprising:

When detecting that the current access point APN of the terminal cannot be used to transmit the number of the target application              According to the packet, generating second description information including the feature description information of the target application and the prohibition indication,              The prohibition indication includes a current access point APN;

The second description of the feature description information and the prohibition indication including the target application based on the PCC rule              The information is sent to the data gateway PGW.
A method for selecting an access point, comprising:

Sending feature description information of the target application data packet to the target application when it is detected              a network side, so that the network side detects, according to the feature description information, whether the current access point APN of the terminal is              A data packet that can be used to transmit the target application;

Receiving, by the network side, a target access that can be used to transmit the target application data packet              Pointing the indication information of the APN, and transmitting, by the target access point APN, the data packet of the target application;

The indication information returned by the network side includes: a data gateway PGW, policy and charging.              The function server PCRF or the access network discovers and indicates the indication information returned by the function server ANDSF.
The method of claim 13 wherein said receiving a network side return              Including the indication information of the target access point APN that can be used to transmit the target application data packet,              Transmitting, by the target access point APN, the data packet of the target application, including:

If the indication information including multiple access point APNs returned by the network side is received, according to the              The priority parameter of the access point APN included in the indication information is determined to be used for transmitting the target application              Target access point APN of the data packet;

Transmitting the data packet of the target application through the target access point APN.
An apparatus for selecting an access point, comprising:

An acquiring module, configured to acquire first feature description information of a target application of the terminal;

a detecting module, configured to determine the end according to the first feature description information acquired by the acquiring module              Whether the current access point APN of the terminal can be used to transmit the data packet of the target application;

a determining module, configured to: when the detecting module determines that the current access point APN is unavailable for transmitting the              Determining, for the target application, a target access point for the terminal that can be used to transmit the data packet              APN;

An indication module, configured to indicate the target access point determined by the terminal by using the determining module              APN transmits a data packet of the target application;

The first feature description information includes a source IP address and a destination IP address of the target application.              At least one of an address, a source port number, a destination port number, a protocol type, and an application identifier.
The device of claim 15, wherein the obtaining module comprises:

a request receiving unit, configured to receive a bearer resource modification request sent by the terminal, where the bearer resource              The first modification description information of the target application is included in the source modification request;

An information extracting unit, configured to provide a bearer resource modification request received from the request receiving unit              Taking the first feature description information.
The device of claim 16 wherein:

The detection module includes:

a transmitting unit, configured to send the first feature description information to a policy and charging function server              PCRF, requesting the PCRF to detect whether the current access point APN of the terminal can be used for the transmission station              The data packet of the target application is further configured to receive a detection result returned by the PCRF in response to the request;

a result determining unit, configured to include, in the detection result, data that can be used to transmit the target application              Determining, by the target access point APN of the packet, that the current access point APN of the terminal cannot be used to transmit the              The data packet of the target application;

The determining module includes:

An access point extracting unit, configured to extract the target access from the detection result returned by the PCRF              Point APN;

a first access point determining unit, configured to use the target access point extracted by the access point extracting unit              The APN is determined to be the target access point APN of the terminal.
The device of claim 15 wherein said detecting module comprises:

a detecting unit, configured to determine whether the first feature description information and the preset data description parameter are              Match

a matching determining unit, configured to determine, when the detecting unit determines that the result is a match,              The current access point APN cannot be used to transmit data packets of the target application.
The device of claim 18, wherein

The preset data description parameter includes: an event subscription parameter, where the event subscription parameter includes              The second feature description information and the behavior description parameter, where the behavior description parameter includes an indication report server or a loss              Discard the parameters of the packet;

The detecting unit is specifically configured to: determine whether an item exists in the first feature description information or              The plurality of description information is the same as one or more of the description information in the second feature description information;

The determining module includes:

a parsing unit, configured to: when the detecting unit determines that the result is the first feature description information              One or more pieces of description information and second feature description information included in the event subscription parameter              One or more pieces of description information are the same, and the behavior description parameter is a parameter of the indication reporting server              The first feature description information is sent to the policy and charging function server PCRF;

a second access point determining unit, configured to receive the first sent by the PCRF according to the parsing unit              Target access point that can be used to transmit the data packet of the target application obtained by the feature description information              The APN determines the target access point APN as the target access point APN of the terminal.
The device of claim 18, wherein

The preset data description parameter includes: preset access configuration parameters, and the access configuration parameter              Included in the third feature description information and at least one access point APN;

The detecting unit is specifically configured to: determine whether an item exists in the first feature description information or              The plurality of description information is the same as one or more of the description information in the third feature description information;

The determining module includes:

An obtaining unit, configured to: when the detecting unit determines that the result is the first feature description information              One or more description information and one or more description information in the third feature description information              When the same, the at least one access point APN included in the access configuration parameter is obtained;

a third access point determining unit, configured to acquire at least one access point APN from the acquiring unit              Selecting an access point APN corresponding to the first feature description information as being capable of transmitting the destination              The target access point APN of the packet of the application.
The device according to any one of claims 15 to 20, wherein the indicator module has Body for:

And transmitting the first feature description information and the update bearer request of the target access point APN And sent to the mobility management entity MME, so that the mobility management entity MME is controlled by radio resources The RRC connection configuration pushes the first feature description information and the target access point APN to the end end.
The device of claim 21, further comprising:

a receiving module, configured to: if the current access point APN is not used to transmit the data packet of the target application,              Receiving a prohibition indication sent by the policy and charging function server PCRF based on the PCC rule, the prohibition              The stop indication includes the current access point APN;

a generating module, configured to generate a forbidden class including the first feature description information and the prohibition indication              The flow template is pushed to the terminal by the default bearer.
An apparatus for selecting an access point, comprising:

An information acquiring module, configured to acquire feature description information of the target application, where the feature description information packet              Source IP address, destination IP address, source port number, destination port number, protocol type,              At least one of the application identifiers;

a determining module, configured to determine, according to the feature description information obtained by the information acquiring module,              Whether the current access point APN of the terminal can be used to transmit the data packet of the target application;

An access point determining module, configured to: when the determining result of the determining module is negative, determine that the information can be used for transmitting              Transmitting a target access point APN of the data packet of the target application;

And a sending module, configured to send the target access point APN to the data gateway PGW.
The device of claim 23, wherein the access point determining module comprises:

a request sending unit, configured to send, by using an access point, the acquired feature description information              To the access network discovery and selection function server ANDSF;

An information receiving unit, configured to receive, by the ANDSF, an access sent by the request sending unit              The target access point APN that can be used to transmit the data packet of the target application returned by the point request.
The device according to claim 23 or 24, wherein the sending module comprises:

a first generating unit, configured to generate feature description information including the target application, and the target connection              First indication information of the inbound APN;

a first information sending unit, configured to generate the first generated by the first generating unit based on a PCC rule                                        The indication information is sent to the data gateway PGW.
The device of claim 25, wherein the sending module further comprises:

a second generating unit, configured to detect that the current access point APN of the terminal cannot be used for transmitting              Generating the feature description information and the prohibition finger including the target application when the data packet of the target application is input              The second indication information, where the prohibition indication includes a current access point APN;

a second information sending unit, configured to generate the second generated by the second generating unit based on a PCC rule              The indication information is sent to the data gateway PGW.
An apparatus for selecting an access point, comprising:

a sending module, configured to: feature the target application data packet when detecting that the target application is running              The description information is sent to the network side, so that the network side detects the current connection of the terminal according to the feature description information.              Whether the ingress APN can be used to transmit the data packet of the target application;

An access module, configured to receive, when received by the network side, the data that can be used to transmit the target application              When the indication information of the target access point APN of the packet is transmitted, the target is transmitted through the target access point APN              Application data packet;

The indication information returned by the network side includes: a data gateway PGW, policy and charging.              The function server PCRF or the access network discovers and indicates the indication information returned by the function server ANDSF.
The device of claim 27, wherein the access module comprises:

An access point determining unit, configured to receive, when receiving, a finger of the multiple access point APN returned by the network side              When the information is displayed, it is determined according to the priority parameter of the access point APN included in the indication information.              a target access point APN for transmitting a data packet of the target application;

a transmission control unit, configured to determine, by the access point determining unit, a target access point APN              Transmitting the data packet of the target application.
A computer storage medium, characterized in that

The computer storage medium stores a program, the program including any one of claims 1-8 when executed The method steps described in the item.
A computer storage medium, characterized in that

The computer storage medium stores a program, the program including when executed according to claims 9-12 A method step as described.
A computer storage medium, characterized in that

The computer storage medium stores a program, the program including when executed according to claims 13-14 A method step as described.
A network device, comprising: a receiver, a transmitter, a memory, and a processing              ,

Wherein, the processor performs the following steps:

Obtaining first feature description information of the target application of the terminal;

Determining, according to the first feature description information, that the current access point APN of the terminal cannot be used for              Transmitting a data packet of the target application;

Determining, for the terminal, a target access point that can be used to transmit a data packet of the target application              APN;

Instructing the terminal to transmit a data packet of the target application by using the target access point APN;

The first feature description information includes a source IP address and a destination IP address of the target application.              At least one of an address, a source port number, a destination port number, a protocol type, and an application identifier.
A network device according to claim 32, wherein said processor is executing              The first feature description information of the target application of the terminal is obtained, and the following steps are specifically performed:

Receiving a bearer resource modification request sent by the terminal, where the bearer resource modification request includes              Descriptive information describing the first feature of the target application;

Extracting the first feature description information from the bearer resource modification request.
A network device according to claim 33, wherein said processor is executing              Determining, according to the first feature description information, that the current access point APN of the terminal cannot be used for transmitting                                        To download the data packet of the target application, perform the following steps:

Sending the first feature description information to the policy and charging function server PCRF to request the location              The PCRF detects whether the current access point APN of the terminal can be used to transmit the number of the target applications.              According to the package;

Receiving a detection result returned by the PCRF, if the detection result includes              The target access point APN of the data packet of the target application determines that the current access point APN of the terminal is not              A data packet that can be used to transmit the target application;

Determining, by the processor, the number of the terminal that can be used to transmit the target application              According to the target access point APN of the package, the following steps are performed:

Determining, by the detection result, the target access point APN as a target access of the terminal              Point APN.
A network device according to claim 32, wherein said processor is executing              Determining, according to the first feature description information, that the current access point APN of the terminal cannot be used for transmitting              To download the data packet of the target application, perform the following steps:

Determining whether the first feature description information matches a preset data description parameter;

If it matches, determining that the current access point APN of the terminal cannot be used to transmit the target application              Packet.
A network device according to claim 35, wherein

The preset data description parameter includes: an event subscription parameter, where the event subscription parameter includes              The second feature description information and the behavior description parameter, where the behavior description parameter includes an indication report server or a loss              Discard the parameters of the packet;

The processor performs the determining the first feature description information and the preset data description parameter              If the numbers match, perform the following steps:

Determining whether one or more pieces of description information and the first part exist in the first feature description information              One or more of the description information in the second feature description information is the same;

Determining, by the processor, the number of the terminal that can be used to transmit the target application              According to the target access point APN of the package, the following steps are performed:

If the judgment result is that one or more description information and the presence information are present in the first feature description information              One or more of the description information in the second feature description information is the same, and the behavior description parameter is              The parameter indicating the report to the server sends the first feature description information to the policy and charging function              Server PCRF;

Receiving, by the PCRF, the information acquired according to the first feature description information, for transmitting the target              a target access point APN of the applied data packet, and determining the target access point APN as the terminal              Target access point APN.
A network device according to claim 35, wherein

The preset data description parameter includes: preset access configuration parameters, and the access configuration parameter              Included in the third feature description information and at least one access point APN;

The processor performs the determining the first feature description information and the preset data description parameter              If the numbers match, perform the following steps:

Determining whether one or more pieces of description information and the first part exist in the first feature description information              One or more of the description information in the three feature description information is the same;

Determining, by the processor, that the applicable access point APN is determined for the terminal, specifically executing the following              step:

If the judgment result is that one or more description information and the presence information are present in the first feature description information              If the one or more description information in the third feature description information is the same, the access configuration parameter is obtained.              At least one access point APN included in the number;

Selecting, corresponding to the first feature description information, from the at least one access point APN              The ingress APN acts as a target access point APN that can be used to transmit data packets for the target application.
A network device according to any of claims 32-37, wherein said processor Performing the indication that the terminal transmits data of the target application through the target access point APN Package, the specific steps are as follows:

And transmitting the first feature description information and the update bearer request of the target access point APN And sent to the mobility management entity MME, so that the mobility management entity MME is controlled by radio resources The RRC connection configuration pushes the first feature description information and the target access point APN to the end end.
A network device according to claim 38, wherein said processor is further              Next steps:

If the current access point APN cannot be used to transmit the data packet of the target application, the receiving policy and              The charging function server PCRF is based on a prohibition indication sent by the PCC rule, and the prohibition indication includes              Current access point APN;

Generating a forbidden class flow template including the first feature description information and the prohibition indication, and passing              The default bearer pushes the forbidden class flow template to the terminal.
A server, comprising: a receiver, a transmitter, a memory, and a processor,

Wherein, the processor performs the following steps:

Obtaining feature description information of the target application, where the feature description information includes a source IP of the target application              Address, destination IP address, source port number, destination port number, protocol type, and application ID              One;

Determining, according to the feature description information, whether the current access point APN of the terminal can be used for transmitting              Transmitting a data packet of the target application;

If the determination result is no, determining target access of the data packet that can be used to transmit the target application              Point APN;

Sending the target access point APN to the data gateway PGW.
The server according to claim 40, wherein said processor is executing said              Determining a target access point APN that can be used to transmit the data packet of the target application, as follows:              step:

Sending the obtained feature description information to the access network for discovery and selection by the access point request              Select function server ANDSF;

Receiving, by the ANDSF, the number of target applications that can be used to transmit the target application in response to the access point request              According to the target access point APN of the package.
A server according to claim 40 or 41, wherein said processor is executing              The sending the target access point APN to the data gateway PGW, and performing the following steps:

Generating feature description information including the target application and the first finger of the target access point APN              Display information

Feature description information including the target application and the target access point will be included based on PCC rules              The first indication information of the APN is sent to the data gateway PGW.
A server according to claim 42, wherein said processor further executes the following              step:

When detecting that the current access point APN of the terminal cannot be used to transmit the number of the target application              According to the packet, generating second description information including the feature description information of the target application and the prohibition indication,              The prohibition indication includes a current access point APN;

The second description of the feature description information and the prohibition indication including the target application based on the PCC rule              The information is sent to the data gateway PGW.
A terminal, comprising: a receiver, a transmitter, a memory, and a processor,

Wherein, the processor performs the following steps:

Sending feature description information of the target application data packet to the target application when it is detected              a network side, so that the network side detects, according to the feature description information, whether the current access point APN of the terminal is              A data packet that can be used to transmit the target application;

Receiving, by the network side, a target access that can be used to transmit the target application data packet              Pointing the indication information of the APN, and transmitting, by the target access point APN, the data packet of the target application;

The indication information returned by the network side includes: a data gateway PGW, policy and charging.              The function server PCRF or the access network discovers and indicates the indication information returned by the function server ANDSF.
The terminal according to claim 44, wherein said processor is executing said              Receiving, by the network side, a target access point APN that can be used to transmit the target application data packet              And indicating, by the target access point APN, the data packet of the target application, specifically              Perform the following steps:

If the indication information including multiple access point APNs returned by the network side is received, according to the              The priority parameter of the access point APN included in the indication information is determined to be used for transmitting the target application              Target access point APN of the data packet;

Transmitting the data packet of the target application through the target access point APN.