CN1856155A - Method for user accessing information in next generation network - Google Patents

Abstract

The invention discloses a method for obtaining user access information in a next-generation network, which is used for obtaining user access information in a network attachment subsystem including a connection session location function entity, including authentication of the access user by the network attachment subsystem After the authorization is passed, the configuration information including the address of the service network access point and the identifier of the access operator is delivered to the access user; the access user sends the access operation information delivered by the network attachment subsystem The provider identifier is carried in the service access request message and sent to the service network access point; the service network access point determines the connection session location functional entity to be queried according to the access operator identifier carried in the service access request message, to obtain the access information of the access user. The invention can enable the service network to accurately determine the connection session positioning function entity to be queried according to the service access request message of the user, so as to obtain the user access information.

Description

Method for Acquiring User Access Information in Next Generation Network

technical field

The present invention relates to the next generation network (NGN, Next Generation Network) technology, in particular to a method for acquiring user access information in the next generation network.

Background technique

At present, the International Telecommunication Union-Telecommunications Standardization Organization (ITU-T, ITU-TelecommunicaitonStandardization Sector) and the European Telecommunication Standardization Institute (ETSI, European Telecommunication Standard Institute), as the international and European telecommunication standard organizations, are developing the next generation network (NGN, Next Generation Network) network architecture, as shown in Figure 1, is the network architecture topology diagram of the NGN that is currently in the process of being formulated, wherein the existing NGN network architecture is mainly divided into the following parts:

The service control and application subsystem 10 is mainly composed of IP multimedia subsystem (IMS, IP Multimedia Subsystem), public switched telephone network (PSTN, Public Switch Telephone Network)/integrated service digital network (ISDN, Integrated Service Digital Network) evolution subsystem and Streaming media business subsystem and other components are used to complete the control functions of various application services;

Resource Admission Control Subsystem (RACS, Resource Admission Control Subsystem) 20 is used to complete the control, allocation and management functions of bearer network resources based on business requirements, so as to ensure the service quality of services;

Network Attachment Subsystem (NASS, Network Attachment Subsystem) 30, used to complete authentication and authorization of access users, address allocation and configuration management functions of user location information and terminal information;

The transmission subsystem 40 is used to complete the transmission function of various network messages under the control of the resource admission control subsystem RACS 20.

Since the network architecture of NGN involves a wide range of aspects, it will not be described in detail here. The following will mainly introduce the main components of the network attachment subsystem NASS in the NGN system and the functions of each component. Please refer to Figure 2, which is a schematic diagram of the composition of functional entities of NASS defined in the TISPAN (NGN network standard of ETSI) standard organization, wherein NASS includes the following functional entities:

The access management function entity (AMF, Access Management Function) 31 is used to coordinate the network access request initiated by the user terminal, and requests the network access configuration function entity (NACF, NetworkAccess Configuration Function) 32 to allocate an IP address for the user terminal device and other network parameters, and interact with the User Access Authorization Function (UAAF, User Access Authorization Function) 34 to authenticate, authorize or deny network access to the user;

A network access configuration function entity (NACF, Network Access Configuration Function) 32 is used to assign an IP address to a user terminal or a resident gateway device, and issue other network configuration parameters to the user terminal or a resident gateway device, such as a network domain name server ( DNS) address or session signaling proxy address and other parameters;

Connectivity Session Location Function entity (CLF, Connectivity Session Location Function) 33, which is used to associate user identity with physical/geographical location information, network IP address and other location information when a user uses a specific connectivity session service;

User Access Authorization Function entity (UAAF, User Access Authorization Function) 34, used to authenticate and authorize access users;

The user subscription database function entity (PDBF, Profile Data Base Function) 35 is used to store the authentication information of the subscriber, the authentication method of the user identity and its additional important data, etc.;

The user equipment configuration function entity (CDCF, Customer Device Configuration Function) 36 is used to initialize the user terminal equipment (TE, Terminal Equipment)/customer gateway (CNG, CustomerNetwork Gateway), and perform online software upgrades to TE/CNG, In order to realize the automatic configuration function of the terminal.

Note: Since the NGN standard itself is still in the process of continuous development and improvement, the names or descriptions of the above functional entities may change during the standard improvement process.

In addition, NASS also includes the following system external interfaces:

The interface e1 between the access management functional entity AMF 31 and the client gateway CNG, the user terminal uses this interface to initiate an access request to the network;

Connect the session location functional entity CLF 33 and the interface e2 between the service control and application subsystem, and NASS provides the service control and application subsystem with the user's access location (including access device identification and line identification, etc.), access Enter authentication result information, etc.;

The interface e3 between the user equipment configuration function entity CDCF 36 and the user end gateway CNG, through which the NASS completes the configuration management function of the user terminal, such as initial configuration or software upgrade for the user terminal;

Connect the interface e4 between the session location function entity CLF 33 and the resource admission control subsystem RACS, and NASS provides the user's access location information to the RACS through this interface, and is used for the RACS to determine the access location information according to the user's access device and its access mode. Determine how resources are allocated and whether resource allocation meets business needs.

However, the current NGN standards only define the model of each functional entity in NASS and the interface model between the corresponding functional entities and other subsystems, as well as the rough interaction process between each functional entity. For example, the current NGN standard only specifies The CLF in NASS and the service control and application subsystem need to exchange information through the e2 interface between the two. For example, for the IMS service subsystem in the service control and application subsystem, the service contact point (SCP) in the IMS network , Service Contact Point) needs to exchange information with the CLF, that is, the Proxy-Call Session Control Function (P-CSCF, Proxy-Call Session Control Function) entity in the IMS network initiates a user access information query request to the CLF, but may Since the access operator and the service provider are different operators, the access authentication authorization and service authentication authorization are relatively independent, and there may be multiple access operators, so how does the P-CSCF in the IMS subsystem to address and locate the CLF in NASS? Only after this problem is solved, can the service control and application subsystem and the resource admission control subsystem perform effective information interaction with the CLF in NASS, and query the CLF in NASS according to different service access request messages of users Related user access information.

For the above problems to be solved, one of the solutions is to set the service network user ID and the access network user ID (user ID is the account) as the same user ID, or set the service network user ID and the access network user ID to Association, so that the user's access network user identifier can be derived from the service network user identifier. For example, when the user identifier is identified by Uniform Resource Identifiers (URI, Uniform Resource Identifiers), the access network user identifier is: 123XXXX@XXoperator_ XX access network; business network user ID: 123XXXX@XX operator_XX business network. In this way, after the user completes the access authentication, the user can obtain the access point address information of the service network from the NASS (for example, when the service control and application subsystem provides IMS services, the access point of the service network is the P-CSCF), Then the user sends a service access request message to the access point in the service network according to the obtained access point address information, and the access point in the service network can derive the user's access network user ID according to the user's service network user ID , the access point in the service network initiates a query message for querying user access information to the CLF in the NASS according to the user's access network user ID, so as to obtain the user's access location information and access authentication information.

However, the above solutions can only be applied to users who have no business nomadic or roaming requirements. At the same time, the access operator and the service provider operator are required to be the same operator or have a cooperative relationship between the two, and the service network user identification and access Network user identities must be associated with each other. For example, an access network operator provides broadband access services (implemented in the access network) for ADSL access users of a family, and also provides value-added service services for the family (implemented in the business network) ), then using this solution needs to bind the value-added service user ID with the broadband access user ID, but the user cannot move to other places to enjoy the value-added service with the same value-added service user ID.

Therefore, the above solution is not suitable for the separation of access operators and service provider operators, or when users have nomadic or roaming needs, and because there will be a large number of access operators and service provider operators in the future NGN, service provider Operators need to cooperate with different access operators to provide value-added services for multiple access network users. It can be seen that the association and binding of service network user IDs and certain access network user IDs is crucial for the extensive development of services. It is very unfavorable, which will greatly limit the popularization of NGN services in the future.

Another solution is that the access point in the service network initiates a query message for querying user access information to the CLF in the NASS according to the IP address information of the access user, so as to obtain the user access location information and access authentication information. rights information, etc. Because when a user terminal accesses the network, NASS will assign an IP address to the user and configure related access line information, service network access point address information, etc. for the user, and these user-related access information will be stored in NASS In the CLF, the user then sends a service access request message to the access point in the service network according to the configured address information of the service network access point. The request message carries the IP address assigned to the user by the NASS, and the service network The access point in the NASS sends a query message for querying user access information to the CLF in the NASS according to the user's IP address, so as to obtain the user's access location information and authentication information.

However, in the future NGN development process, access operators and service provider operators will be separated, and there will be multiple access operators and multiple service provider operators in the network, so it is possible that a service provider operator will cooperate with Multiple access operators cooperate to provide the same value-added service for different access users. Therefore, in this networking mode, the service provider operator cannot determine the service access request message sent by the user from which access operator according to the user's IP address (because in the actual network, the IP address There may not be strict unified planning, and user IP addresses in different access operators may be duplicated), so the access point in the service network cannot determine which access operator to use based on the user's IP address information The CLF in the NASS subsystem of the NASS subsystem initiates a query message for querying user access information to obtain the user's access location information and access authentication information, especially when the IP address allocated by the access operator to the user is private In the case of IP addresses, it may cause the IP addresses assigned to users by the two access operators to be duplicated. In this case, the access points in the service network cannot pass the IP addresses of the access users. The network segment is identified to find the corresponding access operator, and correspondingly, it is impossible to determine which CLF in the access network NASS to send a query message to, and it is also impossible to obtain corresponding user access information.

Correspondingly, the application of the above two solutions to the resource admission control subsystem RACS to query the user's access location information from the CLF through the e4 interface also has the same disadvantages.

Contents of the invention

The technical problem to be solved by the present invention is to propose a method for obtaining user access information in the next generation network, so that the service network can accurately determine the connection session location function entity to be queried according to the user's service access request message, so as to Obtain user access information.

In order to solve the above problems, the technical scheme proposed by the present invention is as follows:

A method for obtaining user access information in a next-generation network, which is used for obtaining user access information in a network attachment subsystem including a connection session location function entity, comprising steps:

After the network attachment subsystem authenticates and authorizes the access user, it issues configuration information including the address of the service network access point and the identifier of the access operator to the access user;

According to the address information of the service network access point, the access user carries the access operator identifier issued by the network attachment subsystem in the service access request message and sends it to the service network access point;

The service network access point determines the connection session location function entity to be queried according to the access operator identifier carried in the service access request message, so as to obtain the access information of the access user.

Wherein, the configuration information issued by the network attachment subsystem for the access user also includes the access network user identifier;

The access user carries the access network user identifier issued by the network attachment subsystem in the service access request message and sends it to the service network access point;

The service network access point uses the access network user identification carried in the service access request message as an index condition, and obtains the access information of the access user by indexing in the determined connection session location functional entity.

The method also includes the step of assigning an IP address to the access user after the network attachment subsystem passes the authentication and authorization for the access user;

The service access point uses the IP address of the access user as an index condition, and obtains the access information of the access user by indexing in the determined connection session location function entity.

The service access request message is a session initiation protocol message. Wherein the process of carrying the access operator identifier in the session initiation protocol message includes:

Extend the header field of the session initiation protocol message;

Carry the access operator identifier in the extension header field of the session initiation protocol message.

Or the process of carrying the access operator identifier in the session initiation protocol message includes:

Set a header field for the agent to access user information for the session initiation protocol message;

Carry the access operator identifier in the header field used for proxy access user information of the setting.

The service access request packet is a session initiation protocol packet. The process of carrying the access operator identifier and the access network user identifier in the session initiation protocol message includes:

Extend the header field of the session initiation protocol message;

Carry the access operator identifier and the access network user identifier respectively in the extended header field of the session initiation protocol message.

Or the process of carrying the access operator identifier and the access network user identifier in the session initiation protocol message includes:

Set a header field for the agent to access user information for the session initiation protocol message;

Carry the access operator identifier and the access network user identifier respectively in the header field used for proxy access user information of the setting.

The method also includes the steps of:

The service network access point forwards the access operator identifier and the access network user identifier carried in the service access request message to the resource admission control subsystem;

The resource admission control subsystem determines the connection session location function entity to be queried according to the access operator identifier; and

The access network user identifier is used as an index condition to index in the determined connection session location function entity to obtain the access information of the access user.

The method also includes the steps of:

The service network access point forwards the access user's IP address and the access operator identifier carried in the service access request message to the resource admission control subsystem;

The resource admission control subsystem determines the connection session location function entity to be queried according to the access operator identifier; and

The IP address of the access user is used as an index condition to index in the determined connection session location function entity to obtain the access information of the access user.

Correspondingly, the present invention also proposes the following technical solutions:

A method for obtaining user access information in a next-generation network, which is used for obtaining user access information when a network attachment subsystem includes at least two connection session location functional entities, comprising steps:

After the network attachment subsystem authenticates and authorizes the access user, it issues configuration information including the address of the service network access point, the identifier of the access operator, and the identifier of the connection session location function entity to the access user;

According to the address information of the service network access point, the access user carries the access operator identifier and the connection session location function entity identifier delivered by the network attachment subsystem in the service access request message and sends it to the service network access point;

The service network access point determines the network attachment subsystem to be queried according to the access operator identifier carried in the service access request message, and then determines the network attachment subsystem to be queried according to the connection session location function entity identifier carried in the service access request message. Connect to the session location function entity to obtain the access information of the access user.

Wherein, the configuration information issued by the network attachment subsystem for the access user also includes the access network user identifier;

The access user carries the access network user identifier issued by the network attachment subsystem in the service access request message and sends it to the service network access point;

The service network access point uses the access network user identification carried in the service access request message as an index condition, and obtains the access information of the access user by indexing in the determined connection session location functional entity.

The method also includes the step of assigning an IP address to the access user after the network attachment subsystem passes the authentication and authorization for the access user;

The service access point uses the IP address of the access user as an index condition, and obtains the access information of the access user by indexing in the determined connection session location function entity.

The method also includes the steps of:

The service network access point forwards the access operator identifier, connection session location function entity identifier and access network user identifier carried in the service access request message to the resource admission control subsystem;

The resource admission control subsystem determines the connection session location function entity to be queried according to the access operator identifier and the connection session location function entity identifier; and

The access network user identifier is used as an index condition to index in the determined connection session location function entity to obtain the access information of the access user.

The method also includes the steps of:

The service network access point forwards the IP address of the access user, the access operator identifier and the connection session location function entity identifier carried in the service access request message to the resource admission control subsystem;

The resource admission control subsystem determines the connection session location function entity to be queried according to the access operator identifier and the connection session location function entity identifier; and

The IP address of the access user is used as an index condition to index in the determined connection session location function entity to obtain the access information of the access user.

Since the method for obtaining user access information in the next generation network of the present invention issues the access operator identifier (or the access operator identifier and the CLF identifier) to the user through the network attachment subsystem NASS, the user will use the access operator identifier issued by the NASS The operator identifier (or access operator identifier and CLF identifier) is carried in the service access request message and sent to the service network access point, so that the service network access point can Provider ID and CLF ID) to determine the connection session location function entity CLF to be queried, and combine the access network user ID or IP address issued by NASS for the user as an index condition, so as to index in the determined CLF to obtain the user's access information , so as to solve the problem of information exchange between the service network and the CLF through the interface e2, which is conducive to the cooperation between the service provider operator and the access operator to provide more value-added services for users.

Furthermore, the service network access point may also forward the received access operator ID (or access operator ID and CLF ID), access network user ID or IP address of the access user to the resource admission control sub- The system RACS, and then the RACS can determine the CLF to be queried according to the access operator identifier (or the access operator identifier and the CLF identifier), and then use the user's access network user identifier or IP address information as an index condition, in the determined CLF The middle index obtains the user's access information, thereby also solving the problem of information exchange between the RACS and the CLF through the interface e4.

Description of drawings

Figure 1 is the network architecture topology diagram of NGN which is currently being formulated;

Fig. 2 is a schematic diagram of the composition of functional entities of NASS defined in TISPAN (the NGN network standard of ETSI) standard organization;

Fig. 3 is the main realization process flow chart that principle of the present invention is implemented in NASS and only contains a CLF situation;

Fig. 4 is a processing flowchart of indexing access user access information by using the access network user identifier as an index condition in the present invention;

Fig. 5 is the processing flowchart of indexing access user access information by using the IP address information of the access user as the index condition in the present invention;

FIG. 6 is a flow chart of the main implementation process of implementing the principle of the present invention under the condition that there are at least two CLFs in the NASS.

Detailed ways

The specific implementation of the method for acquiring user access information in the next generation network according to the present invention will be described in detail below with reference to various drawings.

Fig. 3 is the main implementation process flow chart that the principle of the present invention is implemented in the case of only one CLF in NASS, and its main implementation process is as follows:

Step S10, after the access user terminal is powered on, it initiates an access request to the network attachment subsystem NASS in the access network, and the NASS authenticates the access user according to the access request sent by the access user , after the authentication is passed, the NASS issues the service network access point address (for example, when the service network provides IMS services, the service network access point is the P-CSCF) and the access operator identifier (if available "@chinamobile" represents the configuration information of China Mobile's access operator identifier);

Step S20, according to the service network access point address information issued by the NASS, the access user carries the access operator identifier issued by the NASS in the service access request message and sends it to the service network access point;

Wherein, the service access request message sent by the access user to the service network may be a Session Initiation Protocol (SIP, Session Initiation Protocol) message, and the present invention proposes that two methods may be used here to make the NASS the access request issued by the access user. The operator identification is carried in the SIP message and sent to the service network:

The first way is to first expand the header field of the existing SIP message;

Then, the access operator identifier delivered by the NASS to the access user is carried in the extended header field of the SIP message, so as to complete the purpose of carrying the access operator identifier in the SIP message.

Since the existing 3GPP specification has an extended header field "P-Access-Network-Info" for the SIP protocol, it is used to bear the information related to the access network delivered by the user to the SIP proxy server. The information related to the access network includes information such as access technology, access equipment, and access line identification. In fact, these information are exactly the information that the service network access point needs to query from the CLF entity in NASS. In 3GPP, the user directly sends the The above-mentioned information is carried in the header field "P-Access-Network-Info" of the SIP message and actively reported to the access point of the service network. In this way, in the fixed NGN system, the above-mentioned extended header field "P-Access-Network-Info" can be further extended to carry the access operator identifier issued by NASS for the access user to the extended header field "P-Access-Network-Info" of the SIP message. -Access-Network-Info".

The second way is to re-extend a header field "P-Access-User-Info" for proxy access user information for the SIP protocol (the extension name of the actual protocol may not use this name);

Then, the access operator identifier issued by the NASS for the access user is carried in the header field "P-Access-User-Info" of the extended proxy access user information.

Since the information carried by the extended header field "P-Access-Network-Info" of the SIP protocol in the existing 3GPP specifications is the specific information of the user in the mobile network, the information related to the fixed NGN access network has not been considered, and The use model is different, so a new SIP header field such as "P-Access-User-Info" can be added on the basis of the existing SIP message to transfer access network information. This new header field "P-Access-User-Info" User-Info" and the existing header field "P-Access-Network-Info" can coexist in SIP packets.

Step S30, the service network access point can determine which access operator to query the access user in the connection session location function CLF entity according to the access operator identifier carried in the service access request message reported by the user access information to further obtain the access information of the access user. For example, if the access operator ID carried in the service access request message reported by the access user is XXX@chinamobile, the service network access point can be determined The access information of the access user should be queried in the CLF in the NASS of China Mobile Network. The user's access information includes the access user's access location information, access authentication information, access line information, and access device information. These user-related access information are generally stored in the CLF entity in NASS middle.

Wherein, after the service network access point has determined the connection session location function CLF entity to be queried according to the access operator identifier carried in the service access request message sent by the access user, it can adopt two indexing methods in the determined The index in the CLF corresponds to the access information of the access user.

Please refer to Figure 4 for the first indexing method, which is a flow chart of the present invention using the access network user identifier as an indexing condition to index access user access information, and its main implementation process is as follows:

Step S11, after the access user terminal is powered on, it initiates an access request to the network attachment subsystem NASS in the access network, and the NASS authenticates the access user according to the access request sent by the access user , after the authentication is passed, the NASS will issue a service network access point address, access operator ID, and access network user ID to the access user (for example, "123XXXX@XX operator_XX access network" can be used to represent the access network Incoming network user ID) configuration information;

Step S12, according to the service network access point address information issued by the NASS, the access user carries the access operator ID and the access network user ID issued by the NASS respectively in the service access request message and sends to the business network access point;

Wherein when the service access request message adopts the SIP message, the ways of respectively carrying the access operator ID and the access network user ID in the SIP message can also adopt the above two methods correspondingly: that is, the extension of the existing SIP protocol The header field "P-Access-Network-Info" is used to carry the access operator identifier and the access network user identifier; or re-extend a header field "P-Access" for proxy access user information for the existing SIP protocol -User-Info" is used to carry the access operator ID and the access network user ID.

Step S13, the service network access point determines the connection session location function CLF entity to be queried according to the access operator identifier carried in the service access request message reported by the user;

In step S14, the service network access point then uses the access network user identifier carried in the service access request message reported by the user as an index condition to query the access information corresponding to the access user in the CLF entity determined in step S13.

Please refer to Fig. 5 for the second indexing method, which is a flow chart of the present invention using the IP address information of the accessing user as the indexing condition to index the accessing information of the accessing user, and its specific implementation process is as follows:

Step S21, after the access user terminal is powered on, it initiates an access request to the network attachment subsystem NASS in the access network, and the NASS authenticates the access user according to the access request sent by the access user , after passing the authentication, NASS issues configuration information including the address of the service network access point and the identifier of the access operator to the access user;

Step S22, the NASS assigns an IP address to the access user after the authentication of the access user is passed;

Step S23, according to the service network access point address information issued by the NASS, the access user carries the access operator identifier issued by the NASS in the service access request message and sends it to the service network access point;

Step S24, the service network access point determines the connection session location function CLF entity to be queried according to the access operator identifier carried in the service access request message reported by the user;

In step S25, the service network access point then queries the CLF entity determined in step S24 for the access information corresponding to the access user by using the IP address allocated by the NASS for the access user as an index condition.

The purpose of information exchange between the service network and the CLF in the NASS through the e2 interface can be realized through the above processing process, which is beneficial to the cooperation between the service provider operator and the access operator to provide users with more value-added services.

Furthermore, the service network access point will also forward the access operator ID and the access network user ID carried in the service access request message reported by the access user to the resource admission control subsystem RACS; The received access operator identifier determines the connection session location function CLF entity to be queried; and the received access network user identifier is used as an index condition to index in the determined CLF entity to obtain access information corresponding to the access user.

Alternatively, the service network access point forwards the IP address of the access user and the access operator identifier carried in the service access request message to the resource admission control subsystem RACS; Identify and determine the connection session location function CLF entity to be queried; and use the IP address of the access user as an index condition to index in the determined CLF entity to obtain access information corresponding to the access user.

Therefore, the purpose of information exchange between the resource admission control subsystem RACS and the CLF in the NASS through the e4 interface can be realized through the above processing.

Similarly, the implementation principle of the present invention can also be applied to the acquisition of user access information containing at least two CLFs in NASS, please refer to Figure 6, which is the main implementation of the principle of the present invention in the case of at least two CLFs in NASS Process flow chart, the main implementation process is as follows:

Step S30, after the network attachment subsystem NASS authenticates and authorizes the access user, it issues configuration information including the address of the service network access point, the identifier of the access operator, and the identifier of the connection session location function entity to the access user;

Step S31, according to the address information of the service network access point, the access user carries the access operator identifier and the CLF identifier issued by the NASS respectively in the service access request message and sends them to the service network access point;

Step S32, the service network access point determines the NASS to be queried according to the access operator identifier carried in the service access request message;

In step S33, the service network access point determines the CLF to be queried according to the CLF identifier carried in the service access request message, so as to obtain the access information of the access user.

Among them, the ways to obtain access user access information in the determined CLF are also the two methods described above, namely:

After the NASS authenticates and authorizes the access user, the configuration information delivered to the access user also includes the access network user ID;

The access user also carries the access network user ID issued by the NASS in the service access request message and sends it to the service network access point;

The service network access point uses the access network user identifier carried in the service access request message as an index condition, and obtains the access information corresponding to the access user by indexing in the determined CLF.

Alternatively, after the NASS authenticates and authorizes the access user, the IP address assigned to the access user is used as an index condition, and the access information corresponding to the access user is indexed in the determined CLF.

The processing method of carrying the access operator ID, the CLF ID and the access network user ID in the service access request message (such as a SIP message) is as described above, and will not be repeated here.

Furthermore, the service network access point will also forward the access operator identification, CLF identification and access network user identification carried in the service access request message reported by the access user to the resource admission control subsystem RACS respectively; RACS then determines the connection session location function CLF entity to be queried according to the received access operator ID and CLF ID; and uses the received access network user ID as an index condition to index in the determined CLF entity to obtain the corresponding access User access information.

Alternatively, the service network access point forwards the IP address of the access user and the access operator identifier and the CLF identifier carried in the service access request message to the resource admission control subsystem RACS; Incoming operator ID and CLF ID determine the connection session location function CLF entity to be queried; and use the IP address of the access user as an index condition to index in the determined CLF entity to obtain access information corresponding to the access user.

Through the above processing process, the purpose of information exchange between the service network and multiple CLFs in the NASS through the e2 interface can also be realized, which is conducive to the cooperation between service provider operators and access operators to provide users with more value-added services service; it can also realize the purpose of information exchange between multiple CLFs in the resource admission control subsystem RACS and NASS through the e4 interface.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of the claims of the present invention.

Claims (16)

1. A method for obtaining user access information in a next-generation network, used for obtaining user access information that a network attachment subsystem includes a connection session location function entity, characterized in that it includes steps: After the network attachment subsystem authenticates and authorizes the access user, it issues configuration information including the address of the service network access point and the identifier of the access operator to the access user; According to the address information of the service network access point, the access user carries the access operator identifier issued by the network attachment subsystem in the service access request message and sends it to the service network access point; The service network access point determines the connection session location function entity to be queried according to the access operator identifier carried in the service access request message, so as to obtain the access information of the access user. 2. The method for acquiring user access information in the next generation network according to claim 1, characterized in that: The configuration information issued by the network attachment subsystem for the access user also includes the access network user identifier; The access user carries the access network user identifier issued by the network attachment subsystem in the service access request message and sends it to the service network access point; The service network access point uses the access network user identification carried in the service access request message as an index condition, and obtains the access information of the access user by indexing in the determined connection session location function entity. 3. The method for acquiring user access information in the next generation network according to claim 1, characterized in that: It also includes the step of assigning an IP address to the access user after the network attachment subsystem passes the authentication and authorization for the access user; The service access point uses the IP address of the access user as an index condition, and obtains the access information of the access user by indexing in the determined connection session location functional entity. 4. The method for acquiring user access information in a next-generation network according to claim 1, wherein the service access request message is a session initiation protocol message. 5. The method for obtaining user access information in the next generation network according to claim 4, wherein the process of carrying the access operator identifier in the session initiation protocol message includes: Extend the header field of the session initiation protocol message; Carry the access operator identifier in the extension header field of the session initiation protocol message. 6. The method for obtaining user access information in the next generation network according to claim 4, wherein the process of carrying the access operator identifier in the session initiation protocol message includes: Set a header field for the agent to access user information for the session initiation protocol message; Carry the access operator identifier in the header field used for proxy access user information of the setting. 7. The method for acquiring user access information in a next-generation network according to claim 2, wherein the service access request message is a session initiation protocol message. 8. The method for obtaining user access information in the next generation network according to claim 7, characterized in that the process of carrying the access operator ID and the access network user ID in the session initiation protocol message include: Extend the header field of the session initiation protocol message; Carry the access operator identifier and the access network user identifier respectively in the extended header field of the session initiation protocol message. 9. The method for obtaining user access information in the next generation network according to claim 7, characterized in that the process of carrying the access operator ID and the access network user ID in the session initiation protocol message include: Set a header field for the agent to access user information for the session initiation protocol packet; Carry the access operator identifier and the access network user identifier respectively in the header field used for proxy access user information of the setting. 10. The method for obtaining user access information in the next generation network according to claim 2, further comprising the steps of: The service network access point forwards the access operator identifier and the access network user identifier carried in the service access request message to the resource admission control subsystem; The resource admission control subsystem determines the connection session location function entity to be queried according to the access operator identifier; and The access network user identifier is used as an index condition to index in the determined connection session location function entity to obtain the access information of the access user. 11. The method for obtaining user access information in the next generation network according to claim 3, further comprising the steps of: The service network access point forwards the access user's IP address and the access operator identifier carried in the service access request message to the resource admission control subsystem; The resource admission control subsystem determines the connection session location function entity to be queried according to the access operator identifier; and The IP address of the access user is used as an index condition to index in the determined connection session location function entity to obtain the access information of the access user. 12. A method for obtaining user access information in a next-generation network, which is used for obtaining user access information when a network attachment subsystem includes at least two connection session location functional entities, characterized in that it includes the steps of: After the network attachment subsystem authenticates and authorizes the access user, it issues configuration information including the address of the service network access point, the identifier of the access operator, and the identifier of the connection session location function entity to the access user; According to the address information of the service network access point, the access user carries the access operator identifier and the connection session location function entity identifier delivered by the network attachment subsystem in the service access request message and sends it to the service network access point; The service network access point determines the network attachment subsystem to be queried according to the access operator identifier carried in the service access request message, and then determines the network attachment subsystem to be queried according to the connection session location function entity identifier carried in the service access request message. Connect to the session location function entity to obtain the access information of the access user. 13. The method for acquiring user access information in the next generation network according to claim 12, characterized in that: The configuration information issued by the network attachment subsystem for the access user also includes the access network user identifier; The access user carries the access network user identifier issued by the network attachment subsystem in the service access request message and sends it to the service network access point; The service network access point uses the access network user identification carried in the service access request message as an index condition, and obtains the access information of the access user by indexing in the determined connection session location functional entity. 14. The method for acquiring user access information in the next generation network according to claim 12, characterized in that: It also includes the step of assigning an IP address to the access user after the network attachment subsystem passes the authentication and authorization for the access user; The service access point uses the IP address of the access user as an index condition, and obtains the access information of the access user by indexing in the determined connection session location functional entity. 15. The method for obtaining user access information in the next generation network according to claim 13, further comprising the steps of: The service network access point forwards the access operator identifier, connection session location function entity identifier and access network user identifier carried in the service access request message to the resource admission control subsystem; The resource admission control subsystem determines the connection session location function entity to be queried according to the access operator identifier and the connection session location function entity identifier; and The access network user identifier is used as an index condition to index in the determined connection session location function entity to obtain the access information of the access user. 16. The method for obtaining user access information in the next generation network according to claim 14, further comprising the steps of: The service network access point forwards the IP address of the access user, the access operator identifier and the connection session location function entity identifier carried in the service access request message to the resource admission control subsystem; The resource admission control subsystem determines the connection session location function entity to be queried according to the access operator identifier and the connection session location function entity identifier; and The IP address of the access user is used as an index condition to index in the determined connection session location function entity to obtain the access information of the access user.

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