CN100370870C

CN100370870C - A method for obtaining information in different public land mobile networks and system therefor

Info

Publication number: CN100370870C
Application number: CNB2003101242137A
Authority: CN
Inventors: 武亚娟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2003-12-31
Filing date: 2003-12-31
Publication date: 2008-02-20
Anticipated expiration: 2023-12-31
Also published as: CN1635817A

Abstract

The present invention provides a method and a system for obtaining different public land mobile network information. A logic entity having an application server function is added in every PLMN, and the business marks of the logic entity are disclosed to the public. When a function entity in a first PLMN needs to use information in a second PLMN, a standard interface is directly used for sending request information to the logic entity having an application server function in the second PLMN, the logic entity searches the information needed by the function entity in the first PLMN, and the searched information is sent back to the function entity in the first PLMN by an answering message. The present invention can make each PLMN function entity obtain the information in the other PLMN through universal processes and has the advantage of fine expandability. Simultaneously, a great deal of new interfaces and new protocols among different PLMN function entities can not be defined, and various nonstandard realization modes are shielded. The present invention has little influence on the existing network structure and can be easily realized.

Description

A kind of method and system thereof that obtains different Public Land Mobile Nerwork internal informations

Technical field

The present invention relates to the mobile communication technology field, be meant a kind of method and system thereof that obtains different Public Land Mobile Nerwork (PLMN) internal information especially.

Background technology

Development along with broadband network, mobile communication will not only be confined to traditional Speech Communication, by with present that business (presence), short message, webpage (WEB) are browsed, the combining of data service such as locating information, propelling movement business (PUSH) and file-sharing, mobile communication can realize the business of multiple medium types such as audio frequency, video, picture and text, to satisfy user's multiple demand.

For example, short message service can provide the service of instant message, chatroom and multimedia short message; Video traffic can provide amusement, multimedia messages service such as to exchange with daily; Electronic commerce affair can provide services such as catalogue, search engine, shopping cart, order management and payment; Game service can provide services such as solitaire game and group's recreation; Positioning service can provide services such as missing, guide and warning; The personal assistant business can provide services such as address book, schedule, bookmark management, file storage, event notification and Email.

Under the promotion of multiple application, 3rd Generation Partnership Project (3GPP) and 3rd Generation Partnership Project 2 (3GPP2) etc. are organized and have all successively been released IP-based IP multimedia subsystem, IMS (IMS) framework, its objective is and in the mobile network, use a kind of standardized open architecture to realize diversified multimedia application, so that more selection and abundanter impression to be provided to the user.

The IMS framework is superimposed upon on the packet field network, is made up of CSCF (CSCF) entity, MGCF (MGCF) entity, media resource function (MRF) entity and home signature user server functional entitys such as (HSS).MGCF is used to realize the intercommunication of IMS network and other network; MRF is used to provide media resource, as the folding and unfolding sound, and encoding and decoding and multimedia conferencing bridge etc.; HSS is a customer data base, is used to store user's subscription data and configuration information etc.

CSCF can be divided into serving CSCF (S-CSCF), proxy CSCF (P-CSCF) and three logic entities of inquiry CSCF (I-CSCF) again.S-CSCF is the service switching center of IMS, is used to carry out session control, peace preservation association's speech phase, and managing user information produces charge information etc.; P-CSCF is the access point of terminal user access to IMS, is used to finish user's registration, service quality (QoS) control and safety management etc.; I-CSCF is responsible for the intercommunication between the IMS territory, and network topology structure and configuration information are externally hidden in the distribution of management S-CSCF, and produce metering data etc.

IMS network architecture by the 3GPP definition is equally applicable to the packet network that 3GPP2 defines, i.e. the terminal type of the realization of IMS and user use is irrelevant, and therefore, this IMS is not limited to only be applied in the network relevant with 3GPP and uses.

PLMN is the network of being set up and being runed by administration person, and purpose is to provide the land mobile business for the public.PLMN can regard the expansion of a network as, and it forms network by a plurality of coverages that unified addressing scheme (adopting identical destination code as same country) and routing plan constitute.Different PLMN realizes interconnection by different functional entitys, thereby realizes the purpose of the forwarded call or the network information.

Owing to new business constantly occurs, therefore between different PLMN, new demand has also just appearred, such as, application server (AS) among PLMN is when carrying out the applied business of self, need to use some information among another PLMN to finish, this just needs can obtain mutually between the different PLMN the other side's information.

At present, have following several mode can realize that the functional entity in certain PLMN obtains to be kept at the interior information of other PLMN:

Method one: directly in response message, obtain required information.

The functional entity of waiting the information of obtaining sends a request message to the corresponding function entity in another PLMN directly by the interface of inter-entity, and obtains required information the response message that the corresponding function entity returns in another PLMN.

The defective of said method is: when certain functional entity need reed be won the confidence breath in other PLMN, just must realize an interface between the related functional entities, and the relevant operating specification of definition etc.Consider that following application kind is a lot, the functional entity that need obtain other PLMN internal information is also a lot, therefore, needs the interface of definition also a lot of certainly, and the autgmentability of visible this mode is very poor, almost is infeasible.

Method two: directly from AS, obtain required information.

Each PLMN can offer the information unification that functional entity uses in other PLMN in advance and leave among the fixing AS, and with this AS opening.Like this, the functional entity in other PLMN directly obtains required information from the AS of opening.

The defective of said method is: at first, it is exactly a difficult problem that all information that can externally provide are realized leaving concentratedly, secondly, how these information of leaving concentratedly being upgraded in time also is a difficult problem, thereby this method is difficult to be realized, and autgmentability is also relatively poor.

Summary of the invention

In view of this, the object of the present invention is to provide a kind of general method of obtaining different Public Land Mobile Nerwork internal informations and system thereof.

For arriving above-mentioned purpose, technical scheme of the present invention is achieved in that

A kind of method of obtaining different Public Land Mobile Nerwork internal informations, this method may further comprise the steps:

A, in advance a logic entity with application server functionality is set in each Public Land Mobile Nerwork PLMN, and discloses the service identification information of this logic entity;

When b, the information in the functional entity in the PLMN need obtain the 2nd PLMN, according to the described service identification information of step a, the functional entity in the PLMN has application server functionality in the 2nd PLMN logic entity sends the request message that comprises information to be checked;

After the logic entity that has application server functionality in c, the 2nd PLMN receives request message, according to the information to be checked in the request message, inquire about in the associated databases in this PLMN, and the functional entity of application inquiry in a PLMN returns the response message that comprises Query Result.

Preferably, functional entity in the described PLMN of step b sends the request message that comprises information to be checked, be to be forwarded to the logic entity that has CSCF in the 2nd PLMN, be transmitted to the logic entity that has application server functionality in this PLMN by the logic entity that has CSCF in the 2nd PLMN again by the logic entity that has CSCF in the PLMN.

Preferably, the described information to be checked of step b includes but not limited to mobility information, positional information, access permission information, service authorization information, user totem information, user terminal performance information and user preference information.

Preferably, the described request message that comprises information to be checked of step b is the request message of SIP INVITE type or the request message of SIP SUBSCRIBE type.

Preferably, the logic entity that has application server functionality in described the 2nd PLMN of step c is given the response message of application query function entity, be to be forwarded to the logic entity that has CSCF in the PLMN, be transmitted to the functional entity of application inquiry in this PLMN again by the logic entity that has CSCF in the PLMN by the logic entity that has CSCF in the 2nd PLMN.

Preferably, the described information to be checked of step b is included in the message header or message body of request message;

The described Query Result of step c is included in the message header or message body of response message.

Preferably, this method further comprises: the functional entity in the PLMN is used the information of obtaining in the 2nd PLMN, continues to carry out the business of self.

A kind of system that obtains different Public Land Mobile Nerwork internal informations, at least comprise logic entity and database with CSCF, this system further comprises the logic entity with application server functionality, wherein, described logic entity with application server functionality, directly link to each other respectively with database with logic entity with CSCF, according to have that the CSCF logic entity transmits from the request query messages that comprises information to be checked except that this PLMN, in database, inquire about, and return the response message that comprises Query Result to the PLMN of application inquiry by logic entity with CSCF.

Preferably, described logic entity with application server functionality receives from having the query messages that the CSCF logic entity is transmitted by standard interface, and the database in this PLMN is inquired about by standard interface or privately owned interface.

Preferably, described database includes but not limited to home signature user server HSS, 3GPP generic user profile server GUP Server and presents service server Presence Server.

Preferably, the logic entity with application server functionality is an application server, or the combination of an above application server.

The present invention increases the logic entity with application server functionality of a special use in advance in each PLMN, and externally discloses the service identification of this logic entity.During information in the functional entity in the PLMN need use the 2nd PLMN, directly the have application server functionality logic entity of application standard interface in the 2nd PLMN sends a request message, by the logic entity in the 2nd PLMN with application server functionality, in this PLMN, inquire about the required information of functional entity in the PLMN, and the information that inquired is returned to functional entity in the PLMN by response message by standard or privately owned interface.

Because the external interface of logic entity that the present invention increases is standard fully, obtain information among another PLMN thereby make functional entity among each PLMN can use general flow process, thereby the present invention has good autgmentability.Simultaneously, use the present invention, avoided the interior function inter-entity of different PLMN to define a large amount of new interfaces and New Deal, shielded various nonstandard implementations.The present invention is very little to the influence of existing network infrastructure, and is easy to realize.

Description of drawings

Figure 1 shows that the schematic network structure of the embodiment of the invention;

Figure 2 shows that and use schematic flow sheet of the present invention;

Figure 3 shows that the schematic flow sheet of using the embodiment of the invention one;

Figure 4 shows that the schematic flow sheet of using the embodiment of the invention two.

Embodiment

For making technical scheme of the present invention clearer, the present invention is done detailed description further again below in conjunction with drawings and the specific embodiments.

Thinking of the present invention is: a logic entity with application server functionality is set in each Public Land Mobile Nerwork PLMN in advance, and discloses the service identification information of this logic entity; During information in the functional entity in the PLMN need obtain the 2nd PLMN, the functional entity in the PLMN has application server functionality in the 2nd PLMN logic entity sends the request message that comprises information to be checked; After the logic entity that has application server functionality in the 2nd PLMN receives request message, according to the information to be checked in the request message, inquire about in the associated databases in this PLMN, and the functional entity of application inquiry in a PLMN returns the response message that comprises Query Result.

Figure 1 shows that the schematic network structure of the embodiment of the invention.Network 1 is existing two networks that belong to different PLMN respectively based on the IMS framework with network 2.Comprising in the network 1 that P-CSCF1, S-CSCF1, I-CSCF1, HSS1,3GPP generic user profile server (GUP Server) etc. are a plurality of is used to store different database of information and AS1.Wherein, AS1 is a logic entity with application server functionality in the network 1, and it can be the application server of a special use, also the logic entity that can be made up of more than one server.This AS1 directly links to each other with S-CSCF1, there are standard interface or privately owned interface respectively simultaneously and between all databases in the network 1, as and HSS, GUPServer and present between the service server servers such as (Presence Server) and to be standard interface, with some common databases, as having privately owned interface between the private service platform database in the network 1; This AS1 and other network are the interface of standard as the interface between the application server in the network 2.That is, this AS1 all is a standard interface externally, internally can be standard interface, also can be privately owned interface.This AS1 discloses self service identification to the outside simultaneously, to be used for the addressing of other AS.The form that the external disclosed service identification of this AS1 adopts is: the form of the uniform resource locator (SIP URL) that the Session initiation Protocol of definition uses among RFC 3261 and the RFC 2396, or the form of the uniform resource locator (TEL URL) that defined phone uses among the RFC 2806.Comprise P-CSCF2, S-CSCF2, I-CSCF2 and AS2 in the network 2, wherein, AS2 is the application server that is positioned at network 2, and it may use the information in other PLMN when realizing self professional.

Between network 1 and the network 2, realize interconnection by the I-CSCF in each automatic network, I-CSCF is as external gateway device, and it mainly is to be used to transmit message,, will give the S-CSCF of present networks from the forwards of another network that is.Generally, that is, AS2 inquires about in corresponding database, and returns the response message that comprises Query Result to network 1 by CSCF according to the request query messages that comprises information to be checked that comes automatic network 1 that CSCF transmits.In concrete flow process, I-CSCF and content of the present invention do not have direct relation, therefore, below have all omitted this entity of I-CSCF in all schematic flow sheets.

Figure 2 shows that and use schematic flow sheet of the present invention.

Step 201, when AS2 carried out some service needed and uses data message in the network 1, this AS2 initiated the message of request inquiry, and this request message is according to concrete application, can be the message of SIP INVITE type, also can be the message of SIP SUBSCRIBE/NOTIFY type; Comprise information to be checked in the message header of this request message or the message body, promptly need to inquire about what data message that its destination address is AS1 to AS1;

Whether whether information to be checked in message header or the message body can be mobility information, adhere to as this user, register, and whether is in state of activation, whether unreachable or the like; Positional information is as the route district at certain current place of user etc.; Whether access permission information can insert certain visited network as this user; Whether service authorization information can offer this user's use etc. as some information relevant with specific transactions; User totem information is as the uniform resource locator (SIPURL) in mobile subscriber ISDN signatory number (MSISDN), international mobile subscriber signatory mark (IMSI) and the Session initiation Protocol etc.; Whether the user terminal performance information has the video capability of support etc. as the employed terminal of this user; Information such as user preferences, selecting default receiving terminal as the user is mobile phone rather than landline telephone, does not answer some incoming call etc. in the operating time of every day;

Step 202, the S-CSCF2 in the network 2 according to its destination address, by the I-CSCF in two networks, is transmitted to this request message the S-CSCF1 of AS1 place network after receiving message from AS2;

Step 203 after S-CSCF1 receives message from S-CSCF2, according to information such as its destination addresses, triggers service logic, and this request message is transmitted to AS1;

Step 204, after AS1 receives message from S-CSCF1, according to the information of carrying in this message body, send query requests to corresponding database, and from the response message that database returns, obtain Query Result, promptly in the response message that database returns, obtain AS2 and wish the data message that obtains;

Step 205, AS1 comprises Query Result to AS2 echo reply message in this message, promptly AS2 wishes the information that obtains;

Step 206, the S-CSCF1 in the network 1 according to its destination address, by the I-CSCF in two networks, is transmitted to this response message the S-CSCF2 of AS2 place network after receiving message from AS1;

Step 207 after S-CSCF2 receives message from S-CSCF1, according to information such as its destination addresses, triggers service logic, and this response message is transmitted to AS2;

Step 208, AS2 uses the information that obtains from network 1, continue to carry out the business of self.

Figure 3 shows that the schematic flow sheet of using the embodiment of the invention one.In the present embodiment, an application server AS that is arranged in service network need obtain this user's registration status information and mobility information from another user's home network, so that location service is handled.

Step 301, the S-CSCF in the service network receives the INVITE request from user (UE), and show that UE wishes to use the business in the service network this moment;

Step 302, according to filtering rule, the S-CSCF in the service network is transmitted to AS in the Home Network with this request message;

Step 303, AS in the service network is when handling location service, need use another UE and (not necessarily initiate professional UE, hereinafter referred to as UE ') registration status information and mobility information, MSISDN information as the user, whether this user is unreachable, if being activated, this user is in which route district etc., because this AS not necessarily can obtain required data at once, therefore, it is the request message of SIP SUBSCRIBE that the AS ' of AS in the home network of UE ' place initiates type, the information to be checked that is comprised in the message header of this request message or the message body is " request provides the registration status information and the mobility information of designated user ", and destination address is AS ';

Step 304, the S-CSCF in the service network according to its destination address, by the I-CSCF in two networks, is transmitted to this request message the S-CSCF ' of UE ' place home network after receiving request message from AS;

Step 305, the S-CSCF ' of UE ' place home network receives from behind the S-CSCF request message in the service network, according to filtering rule, handles to AS ' this forwards;

Step 306, after AS ' receives message from S-CSCF ', according to the information of carrying in this message body, send the request (supposing that this moment, the AS inquiring user UE ' of institute successfully registered) of inquiring user login state and mobility information to HSS, and from the response message that HSS returns, obtain Query Result, promptly in response message, obtain registration status information and the mobility information of UE ';

Step 307, AS ' returns the SIP NOTIFY to AS, comprise the user registration state information and the mobility information that inquire in this message, and the information that is inquired can leave in sip message head or the message body in;

Step 308 after the S-CSCF ' of UE ' place home network receives message from AS ', according to its destination address, is transmitted to S-CSCF in the service network by the I-CSCF in two networks with this SIP NOTIFY;

Step 309 after the S-CSCF in the service network receives message from S-CSCF ', according to information such as its destination addresses, triggers service logic, and this SIP NOTIFY is transmitted to AS;

Step 310 after AS obtains the registration status information and mobility information of UE ', continues the location service handling process of operative norm, and gives initiation requesting users UE with the result return results.

Figure 4 shows that the schematic flow sheet of using the embodiment of the invention two.In the present embodiment, an application server AS that is arranged in service network need obtain this user's terminal capabilities information and preference information from another user's home network, to carry out concrete Business Processing.

Step 401, the S-CSCF in the service network receives the INVITE request from user (UE), and show that UE wishes to use the business in the service network this moment;

Step 402, according to filtering rule, the S-CSCF in the service network is transmitted to AS in the Home Network with this request message;

Step 403, AS in the service network is when carrying out Business Processing, owing to need use terminal capabilities information and the preference information of another user UE ', for this reason, it is the request message of SIP INVITE type that the AS ' of this AS in the home network at UE ' place initiates type, the information to be checked that is comprised in the message header of this request message or the message body is " request provides the terminal capabilities information and the preference information of designated user ", and destination address is AS ';

Step 404, the S-CSCF in the service network according to its destination address, by the I-CSCF in two networks, is transmitted to this request message the S-CSCF ' of UE ' place home network after receiving request message from AS;

Step 405, the S-CSCF ' of UE ' place home network receives from behind the S-CSCF request message in the service network, according to filtering rule, handles to AS ' this forwards;

Step 406, after AS ' receives message from S-CSCF ', according to the information of carrying in this message body, send the terminal capabilities of inquiring user UE ' and the request of preference information (supposing that this moment, the AS inquiring user UE ' of institute successfully registered) to GUP Server, and from the response message that GUP Server returns, obtain Query Result, promptly in response message, obtain user terminal performance information and preference information;

Step 407, AS ' gives AS echo reply message, comprise the user's who inquires terminal capabilities information and preference information in this message, and the information that is inquired can leave in sip message head or the message body in;

Step 408 after the S-CSCF ' of UE ' place home network receives message from AS ', according to its destination address, by the I-CSCF in two networks, is transmitted to S-CSCF in the service network with this response message;

Step 409 after the S-CSCF in the service network receives message from S-CSCF ', according to information such as its destination addresses, triggers service logic, and this response message is transmitted to AS;

Step 410 after AS obtains user's terminal ability information and preference information, continues to carry out concrete business processing flow, and gives initiation requesting users UE with the result return results.

The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a method of obtaining different Public Land Mobile Nerwork internal informations is characterized in that, this method may further comprise the steps:

2. method according to claim 1, it is characterized in that, functional entity in the described PLMN of step b sends the request message that comprises information to be checked, be to be forwarded to the logic entity that has CSCF in the 2nd PLMN, be transmitted to the logic entity that has application server functionality in this PLMN by the logic entity that has CSCF in the 2nd PLMN again by the logic entity that has CSCF in the PLMN.

3. method according to claim 1, it is characterized in that the described information to be checked of step b includes but not limited to mobility information, positional information, access permission information, service authorization information, user totem information, user terminal performance information and user preference information.

4. method according to claim 1 is characterized in that, the described request message that comprises information to be checked of step b is the request message of SIP INVITE type or the request message of SIP SUBSCRIBE type.

5. method according to claim 1, it is characterized in that, the logic entity that has application server functionality in described the 2nd PLMN of step c is given the response message of application query function entity, be to be forwarded to the logic entity that has CSCF in the PLMN, be transmitted to the functional entity of application inquiry in this PLMN again by the logic entity that has CSCF in the PLMN by the logic entity that has CSCF in the 2nd PLMN.

6. method according to claim 1 is characterized in that,

The described information to be checked of step b is included in the message header or message body of request message;

7. method according to claim 1 is characterized in that, this method further comprises: the functional entity in the PLMN is used the information of obtaining in the 2nd PLMN, continues to carry out the business of self.

8. a system that obtains different Public Land Mobile Nerwork internal informations comprises logic entity and database with CSCF at least, it is characterized in that this system further comprises the logic entity with application server functionality, wherein,

Described logic entity with application server functionality, directly link to each other respectively with database with logic entity with CSCF, according to have that the CSCF logic entity transmits from the request query messages that comprises information to be checked except that this PLMN, in database, inquire about, and return the response message that comprises Query Result to the PLMN of application inquiry by logic entity with CSCF.

9. system according to claim 8, it is characterized in that, described logic entity with application server functionality, receive from having the query messages that the CSCF logic entity is transmitted by standard interface, the database in this PLMN is inquired about by standard interface or privately owned interface.

10. system according to claim 8 is characterized in that, described database includes but not limited to home signature user server HSS, 3GPP generic user profile server GUP Server and presents service server Presence Server.

11. system according to claim 8 is characterized in that, the logic entity with application server functionality is an application server, or the combination of an above application server.