WO2009089762A1 - Method and device for non-3gpp access gateway to acquire interactive mode with policy decision entity - Google Patents

Abstract

A method for a non-3gpp access gateway to acquire the interactive mode with a policy decision entity is provided, wherein the non-3gpp access gateway obtains the indication information and determines whether or not to launch the interactive process with the policy decision entity according to the indication information. The method is applied to a non-3gpp access gateway and an indication information distribution device.

Description

 Method and device for non-3GPP access gateway to learn how to interact with policy decision entity

[1] This application claims priority to Chinese patent application filed on January 8, 2008 by the Chinese Patent Office, application number 200810055760.7, and the invention titled "Method and device for non- _3GPP access gateway to learn and interact with policy decision entities" The entire contents of which are incorporated herein by reference.

[2] Technical field

 [3] The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for a non-3GPP access gateway to learn how to interact with a policy decision entity.

[4] Background of the invention

 [5] SAE (System Architecture Evolution) Network In addition to support 3GPP (The

3rd Generation Partnership

 Project, 3rd Generation Partnership Program), in addition to access technology, also supports a variety of non-3GPP wireless access networks, such as Wimax (Worldwide Interoperability for Microwave)

 Access, Worldwide Interoperability for Microwave Access, WLAN (Wireless Local Area)

 Network, WLAN, etc., the non-3GPP access network is divided into two types: trusted non-3GPP access and non-trustless non-3GPP access, which are respectively connected to the SAE network through different interfaces to implement mobility management. In addition to supporting non-3GPP technology access, the SAE network also supports mobility between non-3GPP and 3GPP and non-3GPP and non-3GPP.

 [6] In the roaming state, the serving gateway in the SAE network has a local anchor function that is not 3GPP access. It is the packet data gateway PDN that assigns the service IP address to the mobile terminal.

 GSM, service gateway and packet data gateway can use PMIP (Proxy Mobile Internet Protocol), or GTP (GPRS Tunnel Protocol)

 , GPRS tunneling protocol) connection. Which protocol is used on the roaming interface may be related to the roaming agreement, and may also be related to the protocol support capability of the home network (for example, the home network only supports GTP or PMIP protocols)

[7] Non-3GPP access technology accesses the SAE core network through non-3GPP access gateways, for trusted non-3

For the GPP access network, the non-3GPP access gateway is a unique access gateway in a non-3GPP network, such as Wi. ASN GW in the MAX network (Access Service Network

 Gateway, access service network gateway), for non-trusted non-3GPP access networks, non-3GPP access gateways are ePDG (evolved Packet Data)

 Gateway, an evolved packet data gateway, whose role is to establish IPsec between the terminal and the ePDG (intern et Protocol)

 Sercurity, Internet Protocol Security) tunnels to ensure secure transmission of data. The policy decision entity (the visited network policy decision entity and the home network policy decision entity) in the SAE network is used for policy control decision, determining the policies and rules used by the user, and the PCEF (Policy and Charging Enforcement Function) (In this system, the network elements that are connected to the policy decision entity), such as packet data gateways and non-3GPP access gateways, provide QoS (Quality of Service).

 [8] At least the following disadvantages exist in the prior art: The non-3GPP access gateway cannot determine whether it should interact with the policy decision entity to obtain the correct QoS and perform effective processing.

[9] Summary of the invention

 [10] The embodiment of the present invention provides a method and an apparatus for a non-3GPP access gateway to learn a manner of interaction with a policy decision entity, which solves the problem that the non-3GPP access gateway cannot determine whether to interact with the policy decision entity to obtain correct QoS information. The problem.

 [11] The embodiment of the present invention is implemented by the following technical solutions:

 [12] The embodiment of the present invention provides a method for a non-3GPP access gateway to learn how to interact with a policy decision entity, including:

 [13] The non-3GPP access gateway obtains indication information;

 [14] determining, according to the indication information, whether to initiate an interaction process with the policy decision entity.

[15] An embodiment of the present invention provides an indication information distribution apparatus, including:

 [16] an indication information setting module, configured to set indication information, where the indication information is used to determine whether a non-3GPP access gateway initiates an interaction process with a policy decision entity;

[17] The instruction information sending module is configured to send the indication information of the setting.

An embodiment of the present invention provides a non-3GPP access gateway, including:

[19] an indication information receiving module, configured to receive indication information, where the indication information is used to determine non-3GPP access Whether the gateway initiates an interaction process with the policy decision entity;

[20] The indication information identifying module is configured to determine, according to the received indication information, whether to initiate an interaction process with the policy decision entity.

 [21] According to the technical solution provided by the foregoing embodiments of the present invention, in the embodiment of the present invention, the non-3GPP access gateway obtains the indication information to determine whether to initiate an interaction process with the policy decision entity, and obtain dynamic QoS policy information. Determine wireless resource allocation, billing, data forwarding performance, and more. It ensures that the non-3GPP access gateway can obtain the correct QoS information, thus effectively handling subsequent operations.

 [22] BRIEF DESCRIPTION OF THE DRAWINGS

 1 is a method for obtaining indication information by a non-3GPP access gateway through an authentication process according to an embodiment of the present invention; [24] FIG. 2 is a method for obtaining a indication information from a serving gateway by a non-3GPP access gateway according to Embodiment 2 of the present invention; [3] FIG. 3 is a method for obtaining indication information from a primary non-3GPP access gateway in a tightly coupled handover according to Embodiment 3 of the present invention;

 4 is a schematic diagram of a module for indicating information distribution apparatus according to Embodiment 4 of the present invention;

FIG. 5 is a schematic diagram of a non-3GPP access gateway module according to Embodiment 5 of the present invention.

[28] Mode for carrying out the invention

 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

[30] When the GTP protocol is used between the serving gateway and the packet data gateway, the obtained static QoS needs to be used to perform radio resource allocation, charging, data forwarding performance, etc., without interacting with the policy decision entity, that is, cannot be used. The dynamic QoS obtained by the policy decision entity performs radio resource allocation, charging, data forwarding performance, etc.; when the PMIP protocol is used between the serving gateway and the packet data gateway, the non-3GPP access gateway needs to interact with the policy decision entity to obtain policy information. The dynamic QoS included in the policy information is used to perform radio resource allocation, charging, data forwarding performance, etc., and static QoS cannot be used. Therefore, the non-3GPP access gateway needs to know whether to initiate the interaction process with the policy decision entity to obtain the dynamic QoS policy information, or to determine the radio resource allocation, charging, data forwarding performance and the like according to the static QoS obtained from the subscription data of the terminal. In the embodiment of the present invention, the non-3GPP access gateway can obtain the indication information to determine whether to initiate the interaction process with the policy decision entity to obtain the dynamic QoS policy information, or determine the wireless according to the static QoS obtained from the subscription data of the terminal. Resource allocation, billing, data forwarding performance and other operations.

 [32] The non-3GPP access gateway includes two types of trusted and non-trusted. Specifically, for a trusted non-3GP access network, the non-3GPP access gateway is unique to the non-3GPP network. Access gateway, such as ASN in WiM AX network

 GW; for a non-trusted non-3GPP access network, the non-3GPP access gateway may be an ePDG;

[33] The non-3GPP access gateway can be from AAA

 Proxy or HSS/AAA, or the visited service gateway, or the access gateway of the original side to obtain the indication information;

 [34] The specific information obtaining process may be obtained through an authentication process in an initial access process or a handover access process of a non-3GPP access gateway; or may be tied in a PMI P replied from the visited service gateway in the access process. Obtained in the update confirmation message; also in the tightly coupled handover scenario (ie, there is a signaling interface between the non-3GPP access gateways before and after the handover, the delivery context is for the new side to perform the handover process), and the new side (the side after the handover) The non-3GPP access gateway obtains from the context passed by the access gateway on the primary side (the side before the handover).

 [35] The specific form of the indication information is not limited by the present invention, and may be a single indication for indicating whether the non-3G PP access gateway needs to interact with the policy decision entity; or may be supported by the current home network packet data gateway. The protocol type; may also be a parameter of a roaming interface protocol type of the visited service gateway and the home network where the user is currently located (so that the non-3GPP access gateway does not perform interaction with the policy decision entity if the protocol type is GTP) If the protocol type is PMIP, the interaction with the policy decision entity is executed.

 [36] The method for obtaining the indication information is separately described in the following specific embodiments.

[37] In the first embodiment, the indication information is obtained through the authentication process in the initial access process or the handover access process. As shown in FIG. 1, the UE and the non-3GPP access gateway are used for the initial access or handover process initiated by the UE. The access authentication process for the UE needs to be performed between the HS S/AAA, and a simplified access authentication diagram is shown in FIG. 1. The specific access authentication implementation details may be different from the present figure, for example, for trusted Non-3GPP access, the access authentication process is the EAP-AKA process, and for the untrusted access authentication, the IKE process, this The figure is intended to illustrate the generation, delivery, and function of the indication information in the access authentication process. The method for obtaining the indication information by the non-3GPP access gateway in the access authentication process is as follows:

[38] Step 1 - Step 3: The initial access or handover access authentication request initiated by the UE is sent to the non-3GPP access gateway.

, the non-3GPP access gateway passes the AAA proxy (hereinafter referred to as AAA)

 Proxy) routing the access authentication request message to the HSS/AAA server;

[39] Step 4: HSS/AAA Reply to Authentication Response Message to AAA

 Proxy, the authentication response message carries the indication information set by the HSS/AAA;

[40] The indication information may be: a separate indication, indicating whether the non-3GPP access gateway needs to interact with the policy decision entity; or a protocol type supported by the current home network packet data gateway; or serving a visited place The type of roaming interface protocol of the gateway with the home network where the user is currently located; [41] The HSS/AAA may make the separate indication according to static configuration data, such as according to a roaming agreement.

 [42] HSS/AAA may not give the indication to AA A proxy when there is no corresponding configuration data on HSS/AAA.

 [43] Step 5: AAA

 The proxy returns an authentication response message to the non-3GPP access gateway, and the message carries the indication information;

 [44] When the HSS/AAA does not give the indication information to the AAA proxy in step 4, in step 5, the AAA proxy may give an indication according to its own configuration data, such as a roaming protocol, and carry the indication information to the non-3GPP. The authentication response message replied by the access gateway is sent to the non-3GPP access gateway.

 [45] When the HSS/AAA server is passed to AAA in step 4

 The indication information of the proxy is the protocol type supported by the current home network packet data gateway, and the AAA proxy needs to provide an indication according to the protocol type supported by the home network packet data gateway and its own configuration data, and deliver the indication to the non-3GPP. The incoming gateway, the indication information that is transmitted to the non-3GPP access gateway may be: a separate indication indicating whether interaction with the policy decision entity is required, or a protocol type supported by the current home network packet data gateway; The type of roaming interface protocol between the visited service gateway and the home network where the user is currently located. This patent does not limit its manifestation, as long as the non-3GP access gateway can determine from the indication information whether it needs to interact with the policy decision entity.

[46] Step 6: The non-3GPP access gateway replies to the UE with an authentication response message. [47] The indication information is obtained by the non-3GPP access gateway by using the foregoing process, so that the non-3GPP access gateway may perform dynamic interaction with the policy decision entity according to the indication information to obtain dynamic QoS policy information, or obtain the subscription data from the terminal. The static QoS determines the radio resource allocation, charging, data forwarding performance, etc., to perform subsequent corresponding operations. The specific steps in the following are not limited in this embodiment, and therefore will not be described in detail herein.

 [48] In the second embodiment, the indication information is obtained from the PMIP binding update confirmation message replied from the visited service gateway in the access process. As shown in FIG. 2, the method includes the following steps:

[49] Step 1: The UE performs an access procedure of the non-3GPP access system;

 [50] Step 2: The authentication process between the non-3GPP access gateway and the UE and the HSS/AAA, as part of the process, the non-3GPP access gateway obtains the static QoS value signed by the user from the HSS/AAA (the process for The trusted non-3GPP access is the EAP-AKA process, and the non-trusted non-3GPP access is the IKE process);

[51] Step 3: Layer 3 message is triggered, for trusted non-3GPP access, it may be a DHCP message, etc.; for non-trusted non-3GPP access, the message is an IKE request message;

[52] Step 4: The non-3GPP access gateway sends a PMIP binding update request to the visited service gateway; afterwards, the visited service gateway needs to establish a connection with the home packet data gateway;

[53] The visited service gateway needs to select the protocol used by the home packet data gateway. The methods for selecting the protocol to use include:

 [54] 1. The visited service gateway determines the execution of the A process according to the current protocol support capability (such as GTP only, or A or only PMIP, B), or the locally statically configured roaming interface protocol type. Or B process; or

 [55] 2, as shown in steps 2a and 2b in Figure 2, the visited service gateway passes AAA according to the received HSS/AAA server.

 The indication information that is actively sent by the proxy is used to determine whether to perform the A process or the B process, where the indication information is after the A/B process of establishing a connection with the home network packet data gateway is performed after the HSS/AA A server receives the access authentication related message. Received, in an unordered relationship with other messages. The manner and content of the indication information sent by the HSS/AAA server and the AAA proxy are the same as those in the first embodiment.

[56] If the indication information received by the visited service gateway is a separate indication, indicating whether the non-3GPP access gateway needs to interact with the policy decision entity, the visited service gateway indicates in the indication information. No need to interact with the policy decision entity, select the execution A process, and after the representation needs to interact with the policy decision entity, select the B process; if the content of the indication information is the protocol type supported by the current home network packet data gateway or the visit The roaming interface protocol type of the local service gateway and the home network where the user is currently located, if the protocol type supported by the current home network packet data gateway is GTP or the roaming interface protocol of the visited service gateway and the home network where the user is currently located For the type _GTP , the A process is performed. If the protocol type supported by the current home network packet data gateway is PMIP or the roaming interface protocol type of the visited service gateway and the home network where the user is currently located is PMIP, the B process is performed.

 [57] After the visited service gateway selects the corresponding protocol, it performs the A or B process.

 [58] Where A process includes:

 [59] Step 5: Visiting Service Gateway from HSS/AAA via 3GPP AAA Proxy

 Obtaining, by the server, the home packet data network information and the static QoS value subscribed by the user;

 [60] Step 6 - Step 7: Perform a process of creating a default bearer between the visited service gateway and the home packet data gateway, in which the home packet data gateway interacts with the policy decision entity to obtain a policy and charging rule.

Ι π Λ∑! ,.

 [61] The process includes:

 [62] Step 5: The visited service gateway sends a PMIP binding update request to the home packet data gateway; [63] Step 6: The home packet data gateway interacts with the policy decision entity to obtain policy and charging rule information; [64] Step 7: The home packet data gateway sends a PMIP binding update acknowledgement message to the visited service gateway, where the message carries the IP address assigned to the UE.

[65] After completing the A or B process, performing step 8: the visited service gateway sends a PMIP binding update confirmation to the non-3GPP access gateway, and carries the indication information in the PMIP binding update confirmation message;

[66] The visited service gateway can be directly from AAA

 The indication information received by the proxy is carried in the PMIP binding update confirmation message and sent to the non-3GPP access gateway; or

[67] If the indication information is a roaming interface protocol type of the visited service gateway and the home network where the user is currently located, or a protocol type supported by the current home network packet data gateway, the visited service gateway may The indication information is combined with the local static configuration data, or the indication information sent to the non-3GPP access gateway is set in conjunction with the current protocol support capability, and the indication information of the setting is carried in the PM. The indication information sent to the non-3GPP access gateway in the IP binding update acknowledgement message.

[68] The indication information that is sent to the non-3GPP access gateway may be: a separate indication, indicating whether the non-3GPP access gateway needs to interact with the policy decision entity; or supported by the current home network packet data gateway. The type of protocol; or the type of roaming interface protocol for a visited service gateway and the home network where the user is currently located.

[69] If the non-3GPP access gateway determines from the indication information that interaction with the policy decision entity is not required to be performed

 (The explicit indication that does not need to interact with the policy decision entity; or the protocol type supported by the current home network packet data gateway is GTP; or the type of roaming interface protocol of the visited service gateway and the home network where the user is currently located is GTP), Performing the allocation process of the radio resource allocation, charging, and data forwarding performance according to the static QoS obtained in the access authentication process; otherwise, performing step 9 - step 11, the non-3GPP access gateway interacts with the visited network and the policy decision entity of the home network Obtain policy and charging rule information and dynamic Q oS;

 [70] Step 12: The non-3GPP access gateway notifies the UE that the attach procedure is complete, and notifies the UE of the IP address assigned to the terminal by the network side, and may be a DHCP response for the trusted non-3GPP access; Non-3GPP access, the message is an IKE response message.

 [71] In this embodiment, the serving gateway sends the indication information to the non-3GPP access gateway, so that the non-3GPP access gateway can perform the corresponding interaction with the policy decision entity or obtain the static Q oS from the subscription data of the terminal according to the indication. Operation, thereby obtaining correct QoS information, and effectively performing radio resource allocation, billing, data forwarding performance, and the like.

[72] The third embodiment, in the tightly coupled handover scenario, the non-3GPP access gateway on the new side obtains the indication information from the original gateway, and the original access gateway obtains the indication information. The embodiment of the present invention is not limited, and the indication information may be obtained from the HSS/AAA server for the initial connection established by the access gateway on the primary side, as shown in FIG. 3, for the tight coupling, the new side is not the 3GPP access. The gateway can communicate with the access gateway of the original side (which can be an access gateway of the same access technology or an access gateway of the heterogeneous access technology) to obtain some information about the connection establishment of the new side. In the information, the indication information is included, whether the non-3GPP access gateway determines whether to enable the interaction process with the policy decision entity, or whether the static QoS is used to determine the radio resource allocation, charging, data forwarding performance, etc. (static QoS can be Obtained in the context, can also be obtained using a separate process, not limited here) . The context may be actively sent by the primary side access gateway to the non-3GPP access gateway of the new side, as shown in FIG. 3, or may be initiated by the non-3GPP access gateway of the new side to the original side access gateway to obtain the request message. , as shown in Figure 3, the B process is not limited here. The non-3GPP access gateway of the subsequent new side performs related operations according to the indication information, if the indication information indicates that it needs to interact with the policy decision entity (the explicit need to interact with the policy decision entity; or the current home network packet data gateway supports The type of the protocol is PMIP; or the type of the roaming interface protocol of the visited service gateway and the home network where the user is currently located is PMIP, and the C process of FIG. 3 is performed, and the non-3GPP access gateway interacts with the policy decision entity of the visited network and the home network. Obtaining the policy and the charging rule information and the dynamic QoS. Otherwise, the D process is performed, and the process of performing the radio resource allocation, the charging, the data forwarding, and the like according to the static QoS obtained in the access authentication process is performed. The subsequent steps are not limited in this embodiment.

 [73] In this embodiment, the new side non-3GPP access gateway interacts with the original access gateway to obtain indication information, thereby determining whether to interact with the policy decision entity, thereby obtaining correct QoS information, effective radio resource allocation, Billing, data forwarding performance, etc.

 [74] Embodiment 4 provides an indication information distribution apparatus, as shown in FIG. 4 is a schematic diagram of a module of the apparatus, the apparatus includes an indication information setting module, configured to set indication information, where the indication information is used to determine non-3 Whether the GPP access gateway initiates an interaction process with the policy decision entity, and obtains dynamic QoS policy information, where the indication information may be a single indication for indicating whether the non-3GPP access gateway needs to interact with the policy decision entity; or The type of the protocol supported by the home network packet data gateway; or the parameter of the type of the roaming interface protocol of the visited service gateway and the home network where the user is currently located. The indication information distribution apparatus further includes an indication information delivery module, configured to deliver the indication information of the setting to the non-3GPP access gateway.

 [75] The indication information distribution device may be: an HSS/AAA server.

 [76] The indication information distribution apparatus may also be: AAA Proxy, and when the indication information distribution apparatus is an AAA Proxy, the indication information distribution apparatus further includes:

 a first information receiving module (not shown), configured to receive information that is sent by the AAA server and includes a protocol type supported by the home grouping data gateway;

The indication information setting module sets the indication information according to a protocol type supported by the received home packet data gateway or local static configuration data. The indication information distribution device may also be a service gateway, and the device further includes:

 [80] The second information receiving module (not shown) is configured to receive the AAA server through the AAA

 Information sent by the Proxy containing the protocol type supported by the home packet data gateway;

 [81] The indication information setting module is configured according to a protocol support capability of the current device itself, or a locally statically configured roaming interface protocol type, or the received AAA server passes the AAA.

 The information sent by the Proxy includes the protocol type supported by the home packet data gateway, and the indication information for determining whether the non-3GPP access gateway initiates an interaction process with the policy decision entity is set.

[82] The indication information distribution apparatus may also switch the access gateway of the original side to the current user equipment.

[83] The indication information distribution apparatus according to the embodiment can send the indication information to the non-3GPP access gateway before the non-3GPP access gateway establishes the connection with the serving gateway, so as to determine whether to interact with the policy decision entity according to the indication, It ensures that the non-3GPP access gateway can obtain the correct QoS information.

The fifth embodiment of the present invention provides a non-3GPP access gateway. As shown in FIG. 5, the method includes:

[85] an indication information receiving module, configured to receive indication information, where the indication information is used as a basis for determining whether to initiate an interaction process with a policy decision entity;

 The Proxy or the visited service gateway or the access gateway of the current user equipment switching original side receives the indication information.

[86] The indication information identifying module is configured to determine, according to the received indication information, whether to initiate an interaction process with the policy decision entity.

 [007] The non-3GPP access gateway in this embodiment can receive indication information of whether to interact with the policy decision entity before establishing a connection with the serving gateway, and determine, according to the indication information, whether to initiate an interaction process with the policy decision entity, and ensure that the non- The 3GPP access gateway can obtain the correct QoS information.

 [88] In summary, in the embodiment of the present invention, the non-3GPP access gateway obtains the indication information to determine whether to initiate the interaction process with the policy decision entity to obtain the dynamic QoS policy information to determine the radio resource allocation, charging, and data forwarding. Performance and so on. It ensures that the non-3GPP access gateway can obtain the correct QoS information, thus effectively handling subsequent operations.

[89] It will be understood by those skilled in the art that all or part of the steps of implementing the foregoing embodiments may be performed by a program to instruct related hardware, and the program may be stored in a computer readable storage medium. The readable storage medium such as a read only memory (ROM), a random access memory (simplified) Call RAM), disk, CD, etc.

 The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Claim  [1] A method for a non-3GPP access gateway to learn how to interact with a policy decision entity, comprising:  The non-3GPP access gateway obtains indication information;  Determining whether to initiate an interaction process with the policy decision entity according to the indication information. [2] The method of claim 1, wherein the indication information comprises:  a separate indication to indicate whether to initiate an interaction with the policy decision entity; or  The type of protocol supported by the current home network packet data gateway; or  The type of roaming interface protocol between the visited service gateway and the home network where the current user is located. [3] The method of claim 2, wherein the method for the non-3GPP access gateway to obtain the indication information comprises:  Obtaining the indication information through the authentication process in the initial access process or the access process of the handover; or obtaining the indication information in the proxy mobile IP protocol PMIP binding update confirmation message replied from the visited service gateway; or  In the tightly coupled handover scenario, obtain an indication from the context passed by the access gateway on the side before the handover Ι π Λ∑! ,.  [4] The method according to claim 3, wherein the method for obtaining the indication information by the authentication process in the initial access process or the handover access process comprises:  The non-3GPP access gateway receives the access authentication request initiated by the user equipment UE, and the non-3GPP access gateway passes the authentication, authorization, and charging proxy AAA.  The Proxy routes the access authentication request message to the home subscriber server HSS/authentication, authorization, and accounting AAA server;  HSS/AAA Reply Authentication Response Message to AAA  Proxy, the authentication response message carries indication information set by the HSS/AAA; the non-3GPP access gateway receives the AAA  The authentication response message sent by the proxy. The message carries the indication information. [5] The method according to claim 3, wherein the method for obtaining the indication information by the authentication process in the initial access process or the handover access process includes: The non-3GPP access gateway receives the access authentication request initiated by the UE, and the non-3GPP access gateway routes the access authentication request message to the HSS/AAA server through the AA A Proxy;  The HSS/AAA replies to the authentication response message to the AAA Proxy;  Non-3GPP access gateway receives AAA  The authentication response message sent by the proxy carries the indication information set by the AAA Proxy in the authentication response message. [6] The method according to claim 3, wherein the method for obtaining the indication information in the proxy mobile IP protocol PMIP binding update confirmation message replied from the visited service gateway comprises: Setting indication information, and carrying the set indication information in a proxy mobile IP protocol PMIP binding update confirmation message replied to the non-3GPP access gateway by the visited service gateway [7] The method according to claim 6, wherein the step of the visited service gateway setting indication information comprises:  Depending on the current protocol support capabilities, or based on statically configured roaming interface protocol types; or  According to the HSS/AAA server received by the visited service gateway, it passes AAA.  The indication information sent by the proxy. [8] The method of claim 7, wherein the visited service gateway receives HSS/AA  A server passes AAA  The downtime of the indication information sent by the proxy is: After the HSS/AAA server receives the authentication related message of the AAA proxy, the visited service gateway establishes a connection process with the home network packet data gateway.  [9] The method according to claim 3, wherein the method for obtaining indication information from a context delivered by an access gateway on a side before the handover in the tightly coupled handover scenario comprises: the non-3GPP access The gateway receives the context actively sent by the access gateway on the side before the handover; or The non-3GPP access gateway initiates a request message to the side access gateway before the handover to acquire the context. [10] The method according to any one of claims 2 to 9, wherein the step of determining, by the non-3GPP access gateway, whether to initiate an interaction process with the policy decision entity according to the indication information comprises: The information indicates that the policy decision entity needs to interact with the policy decision entity, or the indication information indicates that the roaming interface protocol type of the visited service gateway and the home network where the current user is located is PMIP, or the protocol type supported by the current home network packet data gateway is PMIP, The non-3GPP access gateway interacts with the policy decision entity to obtain policy and charging rule information and dynamic quality of service QoS;  If the indication information indicates that the policy decision entity does not need to be interacted with, or the indication information indicates that the roaming interface protocol type of the visited service gateway and the home network where the current user is located is GTP, or the protocol type GTP supported by the current home network packet data gateway, Then the non-3GPP access gateway does not interact with the policy decision entity.  [11] An indication information distribution device, comprising:  And an indication information setting module, configured to set indication information, where the indication information is used to determine whether a non-3GPP access gateway initiates an interaction process with the policy decision entity;  The instruction information sending module is configured to send the indication information of the setting.  [12] The apparatus according to claim 11, wherein the apparatus is:  Home contracted user server HSS/authentication, authorization and billing AAA server.  [13] The device according to claim 11, wherein the device is: an authentication, authorization, and accounting proxy AAA Proxy, and the device further includes:  a first information receiving module, configured to receive information that is sent by the AAA server and includes a protocol type supported by the home packet data gateway;  The indication information setting module sets the indication information according to a protocol type supported by the received home packet data gateway or local static configuration data. [14] The device of claim 11, wherein the device is a service gateway, and the device further comprises:  a second information receiving module, configured to receive the AAA server by using AAA The information sent by the Proxy includes the protocol type supported by the home packet data gateway; the indication information setting module is configured according to the current device's own protocol support capability, or the locally statically configured roaming interface protocol type, or the received AAA server AAA The information sent by the Proxy includes the protocol type supported by the home packet data gateway, and the indication information for determining whether the non-3GPP access gateway initiates an interaction process with the policy decision entity is set. [15] The apparatus according to claim 11, wherein the apparatus is an access gateway that switches the original side of the current user equipment. [16] A non-3GPP access gateway, comprising:  And an indication information receiving module, configured to receive indication information, where the indication information is used to determine whether a non-3GPP access gateway initiates an interaction process with the policy decision entity;  The indication information identifying module is configured to determine, according to the received indication information, whether to initiate an interaction process with the policy decision entity.  [17] The non-3GPP access gateway according to claim 16, wherein the indication information receiving module is from an authentication, authorization, and charging proxy AAA Proxy  Receiving the indication information; or receiving the indication information from a serving gateway; or receiving the indication information from an access gateway that switches the original user from the current user equipment.