CN101188546B

CN101188546B - Implementation method and system for packet network service and user-subscribed database

Info

Publication number: CN101188546B
Application number: CN 200610145487
Authority: CN
Inventors: 郑波; 张妮
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2006-11-17
Filing date: 2006-11-17
Publication date: 2010-09-29
Anticipated expiration: 2026-11-17
Also published as: CN101188546A; WO2008058472A1

Abstract

The embodiment of the invention discloses a grouping network service realization method, a system, and a user signing data base. The grouping network service realization method is realized by that initial filter regulations which include trigger point information and applied server information are arranged in the user signing data base, first element information is arranged in a service point trigger included in the trigger point information; when the user initiates a service request, a service trigger unit routes the service request to a corresponding service executive unit according to the initial filter regulations gained from the user signing data base, and the service executive unit provides the corresponding service for the user. Through the technical proposal provided by the invention, the information included in the service point trigger in the initial filter regulations is perfected, and the service information needed by the network can be precisely described.

Description

Packet network service implementation method, system and user-subscribed database

Technical field

The present invention relates to the communications field, relate in particular to a kind of packet network service implementation method, system and user-subscribed database.

Background technology

Continuous maturation along with group technology, develop based on Circuit-switched conventional telecommunications net towards broadband telecommunication net based on packet switching, International Telecommunications Union-telecommunications part (ITU-T) and ETSI's normal structures such as (ETSI) all adopt the core net of the network architecture of IP Multimedia System (IMS) as next generation network (NGN), and use the call control signalling of conversation initialized protocol (SIP) as telecommunications core network.

IP Multimedia System (IMS) is a system based on SIP, and the method that provides of calling of service is provided, being called service provides (Service Provision).In the IMS network, typical structure can comprise home subscriber server (HSS), subscriber equipment (UE), application server (AS) and service call conversation control function (S-CSCF).AS provides the increment multimedia service, for example calling transfer, caller identification etc., and an AS can provide one or more services for the user, and a user also can have a plurality of services, promptly can corresponding one or more AS; S-CSCF provides the session control service.The basic step that the IMS service provides is: operator or service provider define service or set of service; When the user orders or revise the service that operator or service provider provide, create the proprietary service data of user with the form of initial filter criteria (iFC); S-CSCF is that send the user according to iFC to send to corresponding AS with the SIP request iFC coupling.

Wherein, iFC is made up of 0 or 1 trigger point information (Instance) and an AS information (Instance), and trigger point information is used for judging that the SIP that the user sends asks whether should send to the AS of iFC appointment.Trigger point information comprises one or more service point triggers (SPT), SPT will ask unified resource sign (Request-URI), SIP method, sip message head, session scenario and conversation description etc. by logical expression with or, non-, combine.This shows that iFC just is the equal of a judgment condition, the SIP with the iFC coupling that is used for indicating the user to send asks send to the AS of iFC appointment.IFC is embedded in the user configuration, is sent to the S-CSCF that distributes for the user from user's HSS.

Generally, when the user registers, HSS sends user's iFC to serve into this user S-CSCF, when IMS service request that the user sends or the IMS service request that sends to the user arrive S-CSCF, S-CSCF will be sent to the AS of iFC appointment with the IMS service request of iFC coupling according to iFC, after AS receives the IMS service request, carry out corresponding service processing.

In the prior art, service point triggers by boolean operation (Boolean operators) with, or, non-(AND, OR and NOT) connects, can constitute one by the SPT after the above-mentioned connection and connect normal state expression formula (Conjunctive Normal Form, CNF), perhaps one is separated normal state expression formula (DisjunctiveNormal Form, DNF), above-mentioned expression formula has constituted a complete Rule of judgment, the IMS service request that S-CSCF receives is satisfying under the above-mentioned Rule of judgment, and S-CSCF is routed to the IMS service request AS address that provides in the initial filter criteria.

But, by existing with or, the expressed Rule of judgment of non-these three kinds of boolean operators is limited, in some cases, the normal state expression formula of only using above-mentioned three kinds of boolean operators to be connected to form will be a very complicated expression formula, can accurately not describe professional trigger condition.

As for a pure audio session, during negotiation of media streams, inside the SDP content that in the IMS service request, comprises, there is and only has the SDP parameter, as:

m＝audio?3456RTP/AVP?0969798

And for a video session, during negotiation of media streams, except the description that audio frequency is arranged, also there is the description of video in the SDP content the inside that comprises in the IMS service request, as:

m＝audio?3456RTP/AVP?0969798

m＝video?3400RTP/AVP?9899

Under these conditions, when wishing to describe the user in initial filter criteria, we are initiating to trigger under the audio session request situation, not only need in the initial filter criteria to describe and comprise character information " audio " in the sip message head " m ", and need to describe in the sip message heads " m " and do not comprise character information " video ".Even, other values of sip message head " m " all need be excluded, as getting rid of in the message header " m " other as " text ", perhaps " application ", perhaps " message " or other expansion.(above content is please specifically referring to IETF RFC4566.) utilize prior art, the initial filter criteria Rule of judgment of an audio session is described, its Rule of judgment can be described below:

The m header field comprises " audio "

And

The m header field does not comprise " video "

And

The m header field does not comprise " text "

And

The m header field does not comprise " application "

And

The m header field does not comprise " message "

And

The m header field does not comprise other expansion

Obviously, in above-mentioned prior art, information that service point triggers comprises exists deficiency in the initial filter criteria, can not describe the business information that network needs exactly.More seriously, if other are arranged＜media〉expansion, also need be exhaustive one by one in above-mentioned condition, and the initial filter criteria that the above-mentioned three kinds of connectors of existing use are described also must be revised to guarantee that described condition is enough accurate synchronously.

Further, what describe in the above-mentioned example only is to comprise character information in the sip message head " m ", a plurality of " and " conflict mutually between the condition that connects.If relate to the assignment of sip message head to parameter, as the assignment of sip message head " b " to bandwidth, " and " obviously there is exclusiveness between the condition that connects.Such condition combination also is unscientific.

Equally, in the packet network service framework of other research organizations such as MSF (MultiService Forum, multi-service forum) research, exist the problems referred to above equally.

Summary of the invention

The embodiment of the invention provides a kind of packet network service implementation method, system and a kind of user-subscribed database, information that service point triggers comprises exists deficiency in the initial filter criteria that exists in the prior art in order to solve, and can not describe the problem of the business information of network needs exactly.

A kind of packet network service implementation method comprises:

The initial filter criteria that comprises trigger point information and Application Server information in the user-subscribed database setting, in the service point triggers that described trigger point information comprises, be provided with first element information, described first element information is: the existence information of first element; And/or, the comparison information of first element and second element;

When the user initiates service request, first element information that service trigger unit comprises according to the initial filter criteria that obtains from user's subscribed database, described service request is routed to the corresponding service performance element, provide corresponding professional for described user by described professional performance element.

A kind of packet network service system comprises:

User-subscribed database, setting comprises the initial filter criteria of trigger point information and Application Server information, in the service point triggers that described trigger point information comprises, be provided with first element information, described first element information is: the existence information of first element; And/or, the comparison information of first element and second element;

Subscriber equipment is used for initiating and/or receiving service request;

Service trigger unit is used for obtaining initial filter criteria from user's subscribed database, and the service request that terminal is initiated routes to the corresponding service performance element;

Professional performance element is used for the service request according to described service trigger unit route, for described user provides corresponding professional.

A kind of user-subscribed database comprises:

Service point triggers is provided with the unit, be used to be provided with the initial filter criteria that comprises trigger point information and Application Server information, in the service point triggers that described trigger point information comprises, be provided with first element information, described first element information is: the existence information of first element; And/or, the comparison information of first element and second element.

Embodiment of the invention beneficial effect is as follows:

The technical scheme that provides by the embodiment of the invention, information that service point triggers comprises has obtained perfectly in the initial filter criteria, can describe the business information that network needs exactly.

Description of drawings

The cellular logic structure chart that Fig. 1 is suitable for for the embodiment of the invention;

Fig. 2 is the structural representation according to the operation system of embodiment of the invention setting;

The IMS business realizing schematic flow sheet of Fig. 3 for carrying out according to the structure of the embodiment of the invention.

Embodiment

For the feature and advantage that make the embodiment of the invention are clearer, with reference to the accompanying drawings the embodiment of the invention is further described.

Describe as can be known from background technology, the service point triggers that comprises in the existing initial filter criteria be to use with or, disconnected symbol is connected, and can not describe the business information of network needs exactly.At this situation, the embodiment of the invention proposes a solution, the main thought of this embodiment is: initial filter criteria is made amendment, carry information in the service point triggers that adjustment trigger point information comprises, when the user initiates service request, service trigger unit is according to the initial filter criteria that obtains from user's subscribed database, described service request is routed to the corresponding service performance element, provide corresponding professional by described professional performance element for described user, to guarantee business realizing based on packet network.

Here, initial filter criteria is made amendment, and carries information specifically in the service point triggers that adjustment trigger point information comprises:

The existence information of first element, for example in the service point triggers, first element exists and/or does not exist; And/or

The comparison information of first element and second element, for example in the service point triggers, first element greater than and/or less than second element.

Be example with service implementation method below based on packet network, the specific implementation of the embodiment of the invention is described, because the IMS network is based on a kind of canonical system of packet network, be the convenience of describing, be example with the IMS network in the embodiment of the invention, but do not mean that the method for the embodiment of the invention only can be used for the IMS network.

At first, the cellular logic structure that the embodiment of the invention is suitable for is described referring to Fig. 1.System shown in Figure 1 comprises: user-subscribed database 100, subscriber equipment 200, service trigger unit 300 and professional performance element 400.

User-subscribed database 100 is used to store all data relevant with service with the user.When having a plurality of user-subscribed database that can independent addressing in the network, the user-subscribed database address of the order relations data that professional performance element 400 and service trigger unit 300 can be utilized a kind of address resolution mechanism to find to have given user identity.

User-subscribed database 100 can be the home subscriber server HSS in the IMS network in the such scheme.

Service trigger unit 300 is undertaken providing the session control service alternately by the E3 interface with professional performance element 400, and the agreement of E3 interface can be a Session Initiation Protocol.Service trigger unit 300 obtains user's configuration data by the E2 interface from user-subscribed database 100, and the agreement of E2 interface can be diameter (Diameter) agreement, and user's configuration data here comprises iFC, and above-mentioned first element information is set in iFC.Service trigger unit 300 can will be routed to the specified professional performance element 400 of iFC with user-dependent request according to iFC.

Service trigger unit 300 can be S-CSCF in the IMS network and/or service broker Service Broker etc. in the such scheme.

Professional performance element 400 provides the functional entity of service, and a professional performance element can provide a service, also can provide a plurality of services.Professional performance element 400 obtains user data by the E1 interface from user-subscribed database 100, and the agreement of E1 interface can be a Diameter.

Professional performance element 400 can be the AS in the IMS network in the such scheme.

Below with reference to Fig. 2, figure is the structural representation of a kind of concrete IMS operation system in the embodiment of the invention, and as seen from the figure, it mainly comprises:

HSS700 stores all data relevant with service with the user therein.Present embodiment is provided with the initial filter criteria that comprises trigger point information and Application Server information therein, in the service point triggers that described trigger point information comprises, is provided with first element information;

Subscriber equipment 200 is used for the user and initiates and/or receive the IMS service request;

S-CSCF500, receive described IMS service request after, according to the initial filter criteria that obtains from HSS100, described IMS service request is routed to corresponding application server AS;

Application server AS 600 is used for the IMS service request according to described S-CSCF500 route, for described user provides corresponding professional.

Wherein HSS700 further comprises:

Service point triggers is provided with unit 710, is used to be provided with the initial filter criteria that comprises trigger point information and Application Server information, in the service point triggers that described trigger point information comprises, is provided with first element information.

Described first element information can comprise:

In the described service point triggers, there is and/or do not exist first element, and/or

In the described service point triggers, the comparison information of described first element and second element, as first element greater than and/or less than second element.

As shown in Figure 3, be the schematic flow sheet of embodiment of the invention packet network service implementation method, for ease of explanation, be that example describes with system configuration shown in Figure 2, can similarly handle for other packet configuration.As seen from the figure, packet network service implementation method of the present invention mainly may further comprise the steps:

Step 101, the initial filter criteria comprise trigger point information and Application Server information is set, in the service point triggers that described trigger point information comprises, is provided with first element information at HSS;

In the above-mentioned steps, by the service point triggers among the HSS initial filter criteria that the unit setting comprises trigger point information and Application Server information is set, in initial filter criteria, described first element information is set in the service point triggers that trigger point information comprises, and this setting up procedure adopts expandable mark language XML to describe described service point triggers.Described first element information can be the existence information of first element, perhaps the comparison information of first element.Such as there being and/or not existing first element, the perhaps comparison of first element and second element, greater than second element, first element is less than second element etc. as first element.

Being provided with according to the initial filter criteria needs of this first element information decided, and can make different combination selection according to actual conditions in application.

Step 102, user initiate the IMS service request;

Step 103, S-CSCF judge according to obtaining first element information that comprises in the described initial filter criteria from HSS whether described initial filter criteria allows for the user corresponding service is provided, if enter step 104, otherwise enter step 105;

Step 104, according to described initial filter criteria, described IMS service request is routed to corresponding AS, provide corresponding professional by described AS for described user.

S-CSCF is after receiving service request from user, and the above-mentioned initial filter criteria that assesses user is relevant filters accurately to the IMS service request, and the IMS service request of matching initial filtering rule is routed to AS, provides corresponding business by the AS of correspondence.

Step 105, refusal route to corresponding AS with described user's IMS service request.

See the formation of a concrete service point triggers below.

When certain element of needs description possesses a plurality of assignment (being taken from a set), can adopt the choice of the description expression of " existence " and " not existing " to this element assignment.For example:

When we wish to describe a SIP request for audio session, can be described below:

Exist the m header field to comprise " audio "

And

Do not exist the m header field not comprise " audio "

Adopt the expression way of mathematics to be described below:

Line＝″m″Content＝″.*audio.*″

AND

(NOT?Line＝″m″Content＝″.*audio.*″)

Even in SIP request, occur simultaneously a plurality of medium types as, perhaps comprise expansion arbitrarily, for example:

m＝audio?3456RTP/AVP?0969798

m＝video?3400RTP/AVP?9899

m＝text

m＝message

m＝application

m＝extended-application

……

In these cases, this service filter condition of description that the method for the employing embodiment of the invention can be accurate and succinct.Specifically be applied in the initial filter criteria, for example describe the trigger point of an Invite request, adopt the XML language description, be exemplified below for the initial filter criteria service point triggers connection of audio session:

<SPT>

<ConditionNegated>false</ConditionNegated>

<Method>INVITE</Method>

</SPT>

<SPT>

<ConditionNegated>false</ConditionNegated>

<Content>″.*audio.*″</Content>

</SIPHeader>

</SPT>

<SPT>

<Content>″.*audio.*″</Content>

</SIPHeader>

</SPT>

</TriggerPoint>

The service point triggers that top XML describes, meet Cx interface (S-CSCF and HSS interface) the XML Schema that 3GPP 29228 provides, label＜Exist wherein〉be the newly-increased expansion of present embodiment, express service point triggers (SPT) and judge the judgement that is based on a set, this SPT has described the relation of a kind of " existence " or " not existing ".

It is as follows that top XML is described specific explanations:

Label＜ConditionTypeCNF〉assignment is " true ", show that above-mentioned XML has adopted connection normal state expression formula (Conjunctive Normal Form, CNF) relation between each service point triggers is described, use " AND " connector to connect each service point triggers of (label＜Group 〉) not on the same group, use the service point triggers of " OR " connector in connecting same group.Above-mentioned three＜SPT〉adhere to three different groups separately, so adopt " AND " to connect between three SPT.

In first SPT, provided the method＜Method of professional trigger condition〉be " INVITE "; In second SPT, provided and existed (label＜Exist〉assignment be " true ") SIP header field (label＜SIPHeader 〉) " m " header field (＜Header〉m＜/Header) comprise character string " audio "; In the 3rd SPT, do not provided and existed (label＜Exist〉assignment be " false ") SIP header field (label＜SIPHeader 〉) " m " header field (＜Header〉m＜/Header) do not comprise (＜ConditionNegated〉true＜/ConditionNegated) character string " audio ";

In the foregoing description, quote " existence " and " not existing " and describe the situation that has multiple assignment of m header field, in fact have the header field of multiple assignment for other, as Via, Record-Route, Route or the like, the embodiment of the invention is all suitable equally.

Same, this method be equally applicable to introduce " greater than ", " less than " wait other attended operation.These some needs in describing according to sip message are particularly useful when using the message header field of digital assignment.As b parameter (description bandwidth) header field of Timestamp header field, Expires header field, SDP agreement or the like.As the Expires header field given expired correlation time of message (perhaps content), the value of header field is an integer with second counting, describes Expires header field assignment less than 30 the time in Rule of judgment when hope, can be described below:

The Expires header field is less than 30

Adopt XML to describe this SPT, wherein label＜Lessthan〉value that provides in the value less-than condition is described, as follows:

<SPT>

<ConditionNegated>false</ConditionNegated>

<Header>Expires</Header>

</SIPHeader>

</SPT>

The embodiment of the invention by the expansion " existence ", " not existing ", " greater than " and " less than " etc. operation service point triggers is described, professional trigger condition can accurately and simply be described, adopt the initial filter criteria of this extended description, possess favorable compatibility simultaneously.

In the embodiment of the invention, in information, increased existence, do not existed service point triggers, greater than with less than etc. relation, and in initial filter criteria, use the XML language description it.Adopt above-mentioned new expansion to describe initial filter criteria, can be very succinct and express accurately existing boolean operation connect descriptor can not accurate description or must adopt the complicated service point triggers of describing.Simultaneously, the initial filter criteria that the method that adopts the embodiment of the invention to provide is described even after the spreading parameter content, is suitable for too.Make it possess good compatibility.

Obviously, those skilled in the art can carry out various changes and modification to the embodiment of the invention and not break away from the spirit and scope of the embodiment of the invention.Like this, if these of the embodiment of the invention are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. packet network service implementation method is characterized in that:

2. the method for claim 1 is characterized in that, described existence information is that first element exists or do not exist.

3. the method for claim 1 is characterized in that, described first element information, and in described service point triggers, first element is greater than or less than second element.

4. the method for claim 1 is characterized in that, described service point triggers adopts expandable mark language XML to describe.

5. the method for claim 1, it is characterized in that, described user-subscribed database is home subscriber server HSS, and described service trigger unit is service call conversation control function S-CSCF and/or service broker Service Broker, and described professional performance element is an application server AS.

6. a packet network service system is characterized in that, comprising:

Subscriber equipment is used for initiating and/or receiving service request;

7. system as claimed in claim 6 is characterized in that, described user-subscribed database further comprises:

Service point triggers is provided with the unit, is used to be provided with the initial filter criteria that comprises trigger point information and Application Server information, in the service point triggers that described trigger point information comprises, is provided with first element information.

8. system as claimed in claim 7 is characterized in that described service point triggers is provided with the unit, is used for being provided with:

The existence information of described first element, described existence information is in the described service point triggers, has or do not exist first element, and/or

The comparison information of described first element and second element, described comparison information are that described first element is greater than or less than second element.

9. system as claimed in claim 6, it is characterized in that, described user-subscribed database is home subscriber server HSS, and described service trigger unit is service call conversation control function S-CSCF and/or service broker Service Broker, and described professional performance element is an application server AS.

10. a user-subscribed database is characterized in that, comprising: