WO2007045181A1

WO2007045181A1 - A method, system and device for obtaining access information

Info

Publication number: WO2007045181A1
Application number: PCT/CN2006/002793
Authority: WO
Inventors: Hua Huang; Yanfei Yang
Original assignee: Huawei Technologies Co.,
Priority date: 2005-10-20
Filing date: 2006-10-20
Publication date: 2007-04-26
Also published as: CN1953465A

Abstract

A method, system and device for obtaining access information are used to resolve the problem of being not capable of spreading some services related to access presently resulting from that user equipment sometimes could not obtain and carry an efficient access information head when it sent a SIP to the network side. The method comprises: the network side dynamically allocating an IP address for an user equipment when the user equipment originates an access; and inquiring the corresponding access information from a corresponding list according to the allocated IP address. A user equipment, proxy call session control function entity, server and inquiring system are used to support the method.

Description

Method, system and device for acquiring access information

The present invention relates to the field of networks, and in particular, to a method, system and apparatus for acquiring access information. Background technique

The purpose of network convergence is to communicate various kinds of information on a unified network, which is beneficial to users enjoying multiple communications ^! The "unified experience" of good service.

At present, the industry's more focused convergence includes: the convergence of telecommunication networks and the Internet, and the convergence of mobile networks and fixed networks. Among them, the IP Multimedia Subsystem technology provides the basis for IP-based mobile and fixed communication convergence, and is considered by the industry as an important stage of network evolution.

As part of the session initiation protocol SIP header information, the access header contains specific access technology related information, and the IMS domain entity will use the access information to perform some special access related functions, for example, according to the access type. The charging policy selects a specific service call session control function entity (S-CSCF) according to the access type.

Currently in an IMS application, an access terminal is encapsulated by a user terminal and inserted into a SIP message (not limited to a registration message). Referring to Figure 1 and Figure 2, the following describes the role of the access header through the registration process.

1. TERMINAL sends a registration request message (Register) to the proxy call session control function P-CSCF. The access request message carries an access-type field of the access information header, which is used to indicate the access mode of the terminal, and the access type may be a WLAN mode or a user digital loop mode (XDSL). Or 3G way.

After receiving the registration request message, the P-CSCF may add positioning information (access-info), extended positioning information (extension-access-info), or different access types according to the access information header. Select to encapsulate 3GPP CGI information (cgi-3gpp), 3GPP access network cell ID information ( utran-cell-id-3gpp ), or DSL location information ( dsl-location ).

2. The P-CSCF finds the home domain entry (query the Call Session Control Function Entity (I-CSCF) and forwards the registration request message to it.

3. The I-CSCF sends a UAR message to the Home Subscriber Server (HSS) to determine whether the user has registered the IMS service and the rights to operate.

4. The HSS informs the I-CSCF of the relevant information of the S-CSCF through the UAA message.

5. The I-CSCF forwards the registration request message to the S-CSCF address. After receiving the registration request message, the S-CSCF performs service control and performs service differentiation according to the access type and other access related information carried therein.

6-7. The S-CSCF information of the corresponding terminal is saved in the HSS through the Cx interface message between the S-CSCF and the HSS.

8-10. The S-CSCF forwards the 200 OK corresponding message to the TERMINAL through the I-CSCF and the P-CSCF in sequence.

Usually TERMINAL knows the type of access it uses before sending a message, ie it can encapsulate the access header into a SIP message.

But sometimes TERMINAL is not aware of its access type. For example, TERMINAL accesses the network through an access device. For TERMINAL, the access mode adopted by the access device is independent of the service to be implemented, so it does not need to know the access mode, and it cannot be known according to the current protocol. Specific access methods. In this case, the TERMINAL cannot encapsulate a valid access header.

In the prior art, when the message sent by the TERMINAL does not carry a valid access header, the P-CSCF cannot obtain the access type of the TERMINAL.

In summary, when TERMINAL sends a SIP message to the network side, it sometimes cannot know and carry a valid access information header, which may result in some special access-related functions cannot be deployed. Summary of the invention The embodiment of the present invention provides a method for acquiring access information, a user terminal, a proxy call session control function entity, a server, and an inquiry system, which are used to solve the problem that when a user terminal sends a SIP message to a network side, sometimes it cannot be known and carries an effective access. The header, which causes some access-related services to fail to expand.

The method of the embodiment of the invention includes:

When the user terminal initiates the access, the network side dynamically allocates the IP address to the user terminal; and queries the corresponding access information from the comparison list by using the assigned IP address.

A user terminal provided by the embodiment of the present invention includes: a first query proxy module, configured to interact with a network element that has a comparison list, and query a corresponding connection from the comparison list according to an IP address allocated by the local end Enter information.

A proxy call session control function entity provided by the embodiment of the present invention includes:

The first P-CSCF query module is configured to set a comparison list, and query the access information according to the IP address of the user terminal.

Another proxy call session control function entity provided by the embodiment of the present invention includes: a second P-CSCF query proxy module, configured to interact with a network element configured with a comparison list, and from the comparison according to the IP address of the user terminal The corresponding access information is queried in the list.

The server provided by the embodiment of the present invention includes: a second query module, configured to set a comparison list, and output the query information according to the IP address in the sent message; and query the interface module, configured to receive the query request And transmitting the message to the second query module, and feeding back the query result sent by the second query module.

The query system provided by the embodiment of the present invention includes: a server, configured to set a comparison list for querying; and a user terminal, configured to query, according to an IP address assigned by the local end, a corresponding list from a comparison list in the server Access information.

Another query system provided by the embodiment of the present invention includes: a user terminal, further comprising: a proxy call session control function entity, configured to query a corresponding connection from a locally set comparison list according to an IP address sent by the user terminal Enter information.

A further query system provided by the embodiment of the invention includes: a user terminal, further comprising: The server is configured to set a comparison list for querying; the proxy call session control function entity is configured to query, according to the IP address sent by the user terminal, the corresponding access information from the comparison list in the server.

The beneficial effects of the present invention are as follows:

According to the operator's address plan, the present invention sets a comparison list containing the corresponding IP address start address, IP address end address, access type, and positioning information in the P-CSCF, or in a separate server. When the access information of the user terminal needs to be known, the corresponding access type and location information are queried from the comparison list by using the IP address assigned by the user terminal. Thereby, the encapsulation of the access header is completed and inserted into the message, so that some special services related to access related functions can be expanded. DRAWINGS

1 is a network diagram of an IP multimedia subsystem in the prior art;

2 is a flow chart of existing registration signaling in an IP multimedia subsystem in the prior art;

3 is a flow chart of steps of an embodiment of a method according to the present invention;

4 is a method flow chart of a method for completing a query by using the user terminal of the present invention; FIG. 5 is a signaling flow chart of a method for completing a query by using the first P-CSCF of the present invention;

6 is a method flow diagram of a method for completing a query by using the second P-CSCF of the present invention;

Figure Ί is a schematic structural diagram of a server according to an embodiment of the present invention;

8 is a schematic structural diagram of a user terminal according to an embodiment of the present invention;

9 is a schematic structural diagram of a first P-CSCF according to an embodiment of the present invention;

10 is a schematic structural diagram of a second P-CSCF according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a system for completing a query by using the user terminal of the present invention; FIG. 12 is a schematic diagram of a system for performing a query by using the first P-CSCF of the present invention; FIG. 13 is a third embodiment of the system, using the present invention. A schematic diagram of the system in which the second P-CSCF completes the query. detailed description

In order to obtain a valid access information header when the user terminal sends a SIP message to the network side, an embodiment of the present invention provides a method for obtaining access information. Referring to FIG. 3, the method includes the following steps:

51. The user terminal is assigned to an IP address.

52. Issue a query request message.

S3. Query the corresponding access information from the comparison list by using the IP address.

54. The access information that is queried is sent.

55. Complete the encapsulation of the access header and insert the message into the message.

Corresponding to the example of the above query system, the method of the present invention is specifically described below by three examples. Method Example 1: The user terminal of the present invention is used to complete the query. Referring to Figure 3, and referring to Figure 4, the following specific steps are included:

5101. The user terminal is assigned to an IP address.

When the user terminal initiates the access, the server on the network side informs the user terminal of the server.

The IP address, and a temporary IP address dynamically assigned to the user terminal.

5102. Issue a query request message.

The user terminal sends an inquiry request message to the server according to the IP address of the server, and carries the temporary IP address assigned by the user terminal in the message.

5103. Query the corresponding access information from the comparison list by using the temporary IP address that is allocated. The server receives the query request message, and queries the access information according to the temporary IP address carried in the sent message, and the access information includes: access type and location information. See the table below for the list of controls:

Sequence IP address setup IP address end Access type Location information number Address Address

1 10.121.aa 10.121.254.254 3GPP-GERAN cgi-3gpp 2 10.122.bb 10.121.254.254 ADSL dsl-location

3 ··· ··· ··· ···

4 ··· ··· ··· ···

5104. Send the queried access information.

After the server queries the corresponding access information, the corresponding access information is carried in the feedback message and sent to the user terminal.

If the corresponding access information is not queried, the feedback message is used to notify the user terminal that the temporary IP address is not configured with access information (ie, the temporary IP address is not in the comparison list), and the alarm information is reported. The temporary IP address of the access information and its number are not counted.

5105. Complete encapsulation of the access header and insert the message into the message.

After receiving the feedback message, the user terminal obtains access information from the user. When the message sent to the network side needs to carry the access information header, the user terminal encapsulates the access information into an access information header and inserts the message into the message sent to the network side.

After that, the access information header carried in the message can ensure successful access.

In order to achieve a better implementation effect of the present invention, after the user terminal obtains the access type from the feedback message, it compares it with the original access type of the user terminal (the original access type). It can be the default access type, or the access type obtained by other methods. If they are the same, it indicates that the original access type is still valid, so there is no need to re-initiate the IMS registration process.

If they are not the same, it indicates that the original access type has expired. In this case, if the access information in the feedback message is directly encapsulated and inserted into the related message and sent to the network side, the access information may be different from the registration information stored by each network element on the network side. Can not be implemented normally. Therefore, when the access type in the feedback message is different from the original access type of the user terminal (that is, the access type changes), the access information in the feedback message is encapsulated and inserted into the registration request message. The IMS registration process (prior art) is re-initiated, so that the related network element on the network side updates the registration information of the user terminal according to the registration request message (that is, keeps the information consistent), and ensures the normal implementation of the related service. Method Example 2: The query is completed using the first P-CSCF of the present invention. Referring to Figure 3, and see Figure 5, the following specific steps are included:

5201. The user terminal is assigned to an IP address.

When the user terminal initiates an access, the network side dynamically allocates a temporary IP address to it.

5202. The first type of P-CSCF activates a query operation.

According to the existing procedure (refer to the background art), the user terminal sends an access request to the P-CSCF, where the access request carries the IP address assigned by the user terminal.

The first type of P-CSCF can determine whether the access information header needs to be carried according to the configured rule. If the first P-CSCF needs to carry, the first type of P-CSCF can identify whether there is an access information header in the access request sent by the user terminal. If the access header does not exist, the first P-CSCF activates the query operation. Alternatively, the first type of P-CSCF determines whether the access information header needs to be carried according to the configured rule. If the first P-CSCF needs to carry, the first type of P-CSCF directly sends a query request message to the server, and carries the user terminal to the message. IP address.

The first P-CSCF can also directly activate the query operation.

S203: Query the corresponding access information from the comparison list by using the IP address.

The first type of P-CSCF queries the corresponding access information (including access type and positioning information) from its internally set lookup list with the IP address. The comparison list is the same as the method example one.

If the corresponding access information is not queried, the alarm information is reported to inform the IP address that the access information is not configured (that is, the IP address is not in the comparison list), and the temporary IP address of the access information is not counted. The address and its number.

5204. Complete encapsulation of the access header and insert the message into the message.

The first type of P-CSCF encapsulates the access information into an access information header, and inserts the message into the message that needs to carry the access information header, and sends the message to the network side to complete the access request of the user terminal.

Re-initiate the IMS registration process, the same as method instance 1.

Method Example 3: The second P-CSCF of the present invention is used to complete the query. Referring to Figure 3, and see Figure 6, the following specific steps are included:

S301. The user terminal is assigned an IP address. (same as step S201 in method example 2) 5302. The second P-CSCF activates a query operation. ― According to the existing procedure, the user terminal sends an access request to the second P-CSCF, where the access request carries the IP address assigned by the user terminal.

The second P-CSCF determines whether the access information header needs to be carried according to the configured rule. If the second P-CSCF needs to be carried, the second P-CSCF identifies whether the access information header exists in the access request sent by the user terminal. If not present, the second P-CSCF sends a query request message to the server, and carries the IP address assigned by the user terminal in the message; or the second P-CSCF determines whether it needs to be carried according to the configured rule. If the information is to be carried, the second P-CSCF directly sends an inquiry request message to the server, and carries the IP address assigned by the user terminal in the message.

S303. The server queries, by using the IP address, the corresponding access information from the comparison list. It is the same as step S103 in the first embodiment of the method, and will not be described here.

5304. Send the queried access information.

After the server queries the corresponding access information, it is carried in the feedback message and sent to the second P-CSCF.

If the corresponding access information is not queried, the second P-CSCF is notified by the feedback message that the IP address is not configured (that is, the IP address is not in the comparison list), and the alarm information is reported and the statistics are not configured. The temporary IP address of the access information and its number.

5305. Complete encapsulation of the access header and insert the message into the message.

After receiving the feedback message, the second P-CSCF obtains the access information, and encapsulates the access type and the location information in the access information into an access information header, and inserts the required access The message of the information header is sent to the network side to complete the access request of the user terminal.

After that, the access header carried in the message can ensure successful access.

Re-initiate the IMS registration process, the same as method instance 1.

In order to support the above method, an embodiment of the present invention provides a server, as shown in FIG. 7, which includes: a query interface module and a second query module connected thereto.

The second query module is configured to set a comparison list, and output the queried access information after querying the access information according to the IP address in the sent message. The query interface module is configured to receive the query request message, and transmit the query request message to the second query module, and send the queried access information sent by the second query module.

The embodiment of the present invention further provides a user terminal, as shown in FIG. 8, which includes: a first query agent module; and a second implementation agent, further comprising: a first connection with the first query agent module A package is inserted into the module.

The first query proxy module is configured to interact with the server described in the previous embodiment, and query the corresponding access information from the comparison list according to the IP address assigned by the local end.

The first encapsulation module is configured to encapsulate the obtained access information into an access information header and insert the message into the message.

The embodiment of the present invention further provides a first P-CSCF, as shown in FIG. 9, which includes: a first P-CSCF query module; and in order to achieve a better beneficial effect, the method further includes: The first P-CSCF header identification module connected to the CSCF query module, and the first P-CSCF package insertion module connected to the first P-CSCF query module.

The first P-CSCF header identification module is configured to identify whether an access header exists in a message sent by the user terminal.

The first P-CSCF query module is configured to set a comparison list, and when the information header identification module determines that the access information header does not exist in the message, the access information is queried according to the IP address of the user terminal.

The first P-CSCF encapsulation module is configured to encapsulate the obtained access information into an access information header and insert the message into the message.

An embodiment of the present invention further provides a second P-CSCF, as shown in FIG. 10, which includes: a second P-CSCF query proxy module; to achieve a better beneficial effect, further comprising: and the second P The CSCF queries the second P-CSCF header identification module connected to the proxy module, and the second P-CSCF package insertion module connected to the second P-CSCF query proxy module.

The second P-CSCF header identification module is configured to identify whether an access header exists in a message sent by the user terminal.

The second P-CSCF query proxy module is configured to determine the cancellation in the information header identification module When there is no access information header in the information, the server interacts with the server, and queries the corresponding access information from the comparison list according to the IP address of the user terminal.

The second P-CSCF encapsulation module is configured to encapsulate the obtained access information into an access information header and insert the message into the message.

In connection with the above apparatus, embodiments of the present invention provide three query systems.

System Example 1: Referring to Figure 11, it includes: a user terminal of the present invention, and a server of the present invention associated therewith.

The server is configured to set a comparison list for query.

The user terminal is configured to query corresponding access information from a comparison list in the server according to an IP address allocated by the local end.

System Example 2: Referring to Figure 12, it includes: The first P-CSCF of the present invention, and an existing user terminal connected thereto.

The P-CSCF is configured to query, according to an IP address sent by the user terminal, a corresponding access information from a locally set comparison list.

System Example 3: Referring to Figure 13, it includes: an existing user terminal connected in sequence, a second P-CSCF of the present invention, and a server of the present invention.

The server is configured to set a comparison list for query.

The P-CSCF is configured to query, according to an IP address sent by the user terminal, the corresponding access information from the comparison list in the server.

In summary, according to the address plan of the operator, the present invention sets a comparison list containing the corresponding IP address start address, IP address end address, access type, and positioning information in the P-CSCF, or is set independently. In the server, when the access information of the user terminal needs to be known, the corresponding access type and location information are queried from the comparison list by using the IP address assigned by the user terminal. Thereby, the encapsulation of the access information header is completed and inserted into the message, so that some special services related to access related functions can be deployed.

Further, if the queried access type is different from the original access type of the user terminal (for example, the default type), the queried access information is encapsulated and inserted into the registration request message, and then re-issued. Register. In this way, each network element in the system will update the related information of the user terminal by using the registration request message, so that the access probability of the access service can be higher, and the implementation of other types of services is not affected by the present invention. The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and the modifications of the invention

Claims

Rights request

A method for obtaining access information, comprising the steps of:

When the user terminal initiates the access, the network side dynamically allocates the IP address to the user terminal; and queries the corresponding access information from the comparison list by using the assigned IP address. .

2. The method according to claim 1, wherein the user terminal queries the corresponding access information from the comparison list; or

The corresponding access information is queried from the comparison list by the proxy call session control function entity P-CSCF.

The method according to claim 1 or 2, wherein the comparison list includes mutually corresponding IP address setup addresses, IP address end addresses, access types, and location information.

The method according to claim 1, wherein after the access information is queried, the method further includes the step of: inserting the queried access information into a message sent to the network side.

The method according to claim 4, wherein when the message sent to the network side needs to carry the access information header, the user terminal encapsulates the queried access information and inserts the message sent to the network side. ,

Alternatively, when the message sent to the network side needs to carry the access information header, the P-CSCF encapsulates the queried access information and inserts it into the message sent to the network side.

The method according to claim 5, wherein if the access type in the queried access information is different from the original access type of the user terminal, the queried access information is obtained. After the encapsulation is inserted into the registration request message, the registration is re-initiated.

7. A user terminal, comprising:

The first query proxy module is configured to interact with the network element that is configured with the comparison list, and query the corresponding access information from the comparison list according to the IP address assigned by the local end.

The terminal according to claim 7, wherein the terminal further comprises: a first encapsulation module, configured to encapsulate the obtained access information into an access information header and insert the message into the message.

9. A proxy call session control function entity, comprising:

The first P-CSCF query module is configured to set a comparison list, and query access information according to the IP address of the user terminal.

The proxy call session control function entity of claim 9, wherein the entity further comprises:

a P-CSCF header recognition module, configured to identify whether an access header exists in a message sent by the user terminal, and trigger the first P-CSCF when it is determined that the access header does not exist in the message Query module.

The proxy call session control function entity according to claim 9 or 10, wherein the entity further comprises:

12. A proxy call session control function entity, comprising:

The second P-CSCF query proxy module is configured to interact with the network element set with the comparison list, and query the corresponding access information from the comparison list according to the IP address of the user terminal.

The proxy call session control function entity of claim 12, wherein the entity further comprises:

a second P-CSCF header identification module, configured to identify whether an access header exists in a message sent by the user terminal, and trigger the second P-CSCF when determining that the access header does not exist in the message Query module.

The proxy call session control function entity according to claim 12 or 13, wherein the entity further comprises:

15. A server, comprising:

a second query module, configured to set a comparison list, and output the query information according to the IP address in the sent message; The query interface module is configured to receive the query request message, transmit the message to the second query module, and feed back the query result sent by the second query module.

16. An inquiry system, comprising:

Server, used to set a comparison list for query;

The user terminal is configured to query the corresponding access information from the comparison list in the server according to the IP address allocated by the local end.

17. An inquiry system, comprising: a user terminal,

The system further includes:

The proxy call session control function entity is configured to query the corresponding access information from the local comparison list according to the IP address sent by the user terminal.

18. An inquiry system, comprising: a user terminal,

The system further includes:

Server, used to set a comparison list for query;

The proxy call session control function entity is configured to query the corresponding access information from the comparison list in the server according to the IP address sent by the user terminal.