CN107509173B

CN107509173B - Position information acquisition method and device and IMS

Info

Publication number: CN107509173B
Application number: CN201710840985.2A
Authority: CN
Inventors: 刘牧寅; 符刚; 朱斌; 马泽芳; 谭蓓; 石乐; 邢向晖
Original assignee: China United Network Communications Group Co Ltd; China Information Technology Designing and Consulting Institute Co Ltd
Current assignee: China United Network Communications Group Co Ltd; China Information Technology Designing and Consulting Institute Co Ltd
Priority date: 2017-09-18
Filing date: 2017-09-18
Publication date: 2020-05-22
Anticipated expiration: 2037-09-18
Also published as: CN107509173A

Abstract

The embodiment of the invention provides a method and a device for acquiring position information and an IMS (IP multimedia subsystem), relates to the technical field of communication and solves the problems that when a called user opens a same-number type or one-number-two-machine (one-number-multiple-machine/multiple-card-one-number) service, the same-vibration number of a called user answers a call in an area A, and the position information acquired by a network side is the position information of the called number of the called user in an area B, so that the position information cannot be accurately acquired, and charging and control are affected. When the SCP server determines that the first INVITE request contains information indicating the position information of the co-vibration number to be inquired, the position information of the co-vibration number is obtained, and the position information of the called number is replaced by the position information of the co-vibration number. The embodiment of the invention is used for acquiring the position information.

Description

Position information acquisition method and device and IMS

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for acquiring location information, and an IMS.

Background

Voice service (Voice over LTE) based on network Protocol multimedia subsystem (IMS) will become the main solution for future Voice service, and the basic Voice, short message service, supplementary service, intelligent network and other services of the VoLTE user will be triggered and provided by IMS.

With the development of networks and the rapid popularization of intelligent terminals, data services in mobile networks are continuously increased, user service demands are gradually enriched and diversified, and services such as one number, multiple cards, one card, multiple numbers and the like have wide application scenes; the one-number multi-card service is a plurality of terminal types (including mobile phones, mobile phone software (APP) clients, tablet computers and the like) or a plurality of Subscriber Identity Modules (SIM) and can share the same mobile phone number to perform voice, short message and data services. For voice service, the one-number multi-card service includes two flows of calling and called, wherein the called one-number multi-card service function is that when the called number is called, the called number terminal and the co-vibration number terminal ring at the same time, and the user can answer the call through the called number terminal or any co-vibration number terminal.

The existing same number or one number dual-machine (one number multiple machines/one number multiple cards) services all need two (multiple) numbers, and only externally present one number. For the one-number two-machine service realized based on IMS, the called connection process triggered by the IMS Initial filtering rule (English full name: Initial Filter criterion, abbreviated as IFC) is as follows: triggering intelligent network service logic and then triggering call control; the called intelligent network service comprises a position information acquisition process; for the called intelligent network service, because the position information acquisition flow is involved, for the user who opens the same number type or one number double machine (one number multiple machines/one number multiple cards) service, in the stage of the intelligent network service flow triggered first, because it is not known which terminal (card) actually answers the call in the subsequent same number type or one number double machine (one number multiple machines/one number multiple cards) service logic at this moment, the position information can not be accurately acquired; illustratively, a user B is an intelligent network Service user and opens a same-number class and one-number double-machine (one-number multiple-machine/one-number multiple-card) Service, when a user a calls the user B, a Service-Call Session Control Function (full english name: Service-Call Session Control Function, abbreviated AS S-CSCF) receives an INVITE request (usually called INVITE request), and triggers a Call to a called-side Service Control Point Application Server (full english name: Service Control Point Application Server, abbreviated AS SCP AS) according to IFC information signed by the called user; after receiving the INVITE request, the SCPAS sends a location information query command for the Subscriber B to a Home Subscriber Server (HSS for short); SCP AS takes the position information of user B AS the called position information according to HSS feedback information; since the B user opens the same number class or one number two-phone (one number multiple phone/one number multiple card) service, there is a call of the user a in the area a with the same number of the user B, and the location information obtained by the network side is the location information of the called number of the user B in the area B, so that the location information cannot be accurately obtained, thereby affecting charging and control.

As can be seen from the above, in the prior art, when the called subscriber activates the same-number service or one-number service (one-number service/multiple-card service/one-number service), the same-number of the called subscriber answers the call in the area a, and the location information obtained by the network side is the location information of the called number of the called subscriber in the area B, which results in that the location information cannot be accurately obtained, thereby affecting charging and control.

Disclosure of Invention

Embodiments of the present invention provide a method and an apparatus for acquiring location information, and an IMS, which solve the problem in the prior art that when a called user opens a same-number class or one-number-two-machine (one-number-multiple-machine/multiple-card-one-machine) service, a same-ringing number of a called user answers a call in an area a, and location information acquired by a network side is location information of a called number of the called user in an area B, so that location information cannot be accurately acquired, thereby affecting charging and management and control.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, an embodiment of the present invention provides a method for acquiring location information, including: the SCP server acquires the position information of the called number; the MMTEL server acquires a co-vibration number signed by a called number; when the MMTEL server determines that the terminal equipment using the same-vibration number answers the call, a first INVITE request is generated; wherein the first INVITE request comprises: a co-vibration number; and the SCP server receives the first INVITE request, and when the fact that the first INVITE request contains information indicating that the position information of the co-vibration number is inquired is determined, the position information of the co-vibration number is obtained, and the position information of the called number is replaced by the position information of the co-vibration number.

Optionally, after the SCP server obtains the location information of the called number, the method further includes: the SCP server generates a second INVITE request; the MMTEL server acquires a co-vibration number signed by a called number, and the method comprises the following steps: and the MMTEL server receives the second INVITE request, and acquires a co-vibration number signed by the called number when the second INVITE request is determined to contain the information indicating the opening of the intelligent network service.

Optionally, after the MMTEL server obtains the co-vibration number signed by the called number, the method further includes: the MMTEL server creates a temporary record, wherein the temporary record comprises: a called number and a co-vibration number; when the MMTEL server determines that the terminal equipment using the same-vibration number answers the call, generating a first INVITE request, wherein the steps comprise: when the MMTEL server determines that the terminal equipment answers the call, comparing whether the number used by the terminal equipment is the same as the called number or the co-vibration number in the temporary record or not; when the number used by the terminal equipment is the same as the same vibration number in the temporary record, generating a first INVITE request; or when the number used by the terminal equipment is the same as the called number in the temporary record, triggering the called connection process.

Optionally, when determining that the first INVITE request includes information indicating to query location information of a co-vibration number, the SCP server obtains the location information of the co-vibration number, where the information includes: and when the SCP server determines that the first INVITE request contains information indicating the position information of the co-vibration number to be inquired and the first INVITE request contains the routing address of the SCP server, the position information of the co-vibration number is acquired.

In a second aspect, an embodiment of the present invention provides an SCP server, including: the receiving and sending unit is used for acquiring the position information of the called number; the receiving and sending unit is also used for receiving a first INVITE request sent by the MMTEL server; wherein the first INVITE request comprises: a co-vibration number; and the processing unit is used for acquiring the position information of the co-vibration number and replacing the position information of the called number acquired by the transceiving unit with the position information of the co-vibration number when the first INVITE request received by the transceiving unit is determined to contain the information indicating the position information of the co-vibration number to be inquired.

Optionally, the processing unit is further configured to generate a second INVITE request; wherein, the second INVITE request includes information indicating to open the intelligent network service.

Optionally, the processing unit is specifically configured to, when it is determined that the first INVITE request received by the transceiver unit includes information indicating that location information of the co-vibration number is queried and the first INVITE request includes a routing address of the SCP server, obtain the location information of the co-vibration number.

A third aspect and an embodiment of the present invention provide an MMTEL server, including: the data receiving and sending unit is used for acquiring a co-vibration number signed by the called number; the data processing unit is used for generating a first INVITE request when the terminal equipment using the co-vibration number acquired by the data transceiving unit is determined to answer the call; wherein the first INVITE request comprises: and (5) carrying out simultaneous vibration number.

Optionally, the data transceiver unit is further configured to receive a second INVITE request sent by the SCP server; and the data processing unit is specifically configured to, when it is determined that the second INVITE request acquired by the data transceiver unit includes information indicating that an intelligent network service is opened, acquire a co-vibration number signed by the called number.

Optionally, the data processing unit is further configured to create a temporary record, where the temporary record includes: a called number and a co-vibration number; the data processing unit is specifically used for comparing whether the number used by the terminal equipment is the same as the called number or the co-vibration number in the temporary record or not when the terminal equipment answers the call; when the number used by the terminal equipment is the same as the same vibration number in the temporary record, generating a first INVITE request; or when the number used by the terminal equipment is the same as the called number in the temporary record, triggering the called connection process.

A fourth aspect, an embodiment of the present invention, provides an IMS comprising any SCP server as provided in the second aspect and any MMTEL server as provided in the third aspect.

When the called user opens the same number class or one number double machine (one number multiple machine/one number multiple card) service, the same vibration number of the called user answers the call in the area A, and the SCP server acquires the position information of the called number as the position information of the called number of the called user in the area B; therefore, when the MMTEL server determines that the terminal device using the co-vibration number answers the call, an INVITE request indicating information for inquiring the position information of the co-vibration number is generated; the SCP server acquires the position information of the co-vibration number according to the INVITE request, and replaces the position information of the called number with the position information of the co-vibration number, so that the position information of a terminal which actually answers the call can be accurately acquired; the method solves the problem that when the called user opens the same number class or one number double machine (multi-machine/multi-card) service, the same vibration number of the called user answers the call in the area A, and the position information acquired by the network side is the position information of the called number of the called user in the area B, so that the position information can not be accurately acquired, thereby influencing the charging and the management and control in the prior art.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic flow diagram illustrating a process of implementing simultaneous ringing between a called number and a co-ringing number in an IMS-based one-number multi-card service in the prior art;

fig. 2 is a schematic flow chart of an intelligent network service in a VoLTE user voice service based on IMS in the prior art;

fig. 3 is a schematic flowchart of a method for acquiring location information according to an embodiment of the present invention;

fig. 4 is another schematic flow chart of a method for acquiring location information according to an embodiment of the present invention;

fig. 5 is a schematic flowchart of a method for acquiring location information according to an embodiment of the present invention;

fig. 6 is a schematic flowchart of a method for acquiring location information according to an embodiment of the present invention;

fig. 7 is another schematic flowchart of a method for acquiring location information according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of an SCP server according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an MMTEL server according to an embodiment of the present invention.

Reference numerals:

IMS-1；

SCP server-11; a transceiving unit-110; a processing unit-111;

MMTEL server-12; a data transceiving unit-120; a data processing unit-121.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The application scenario of the embodiment of the invention is VoLTE user voice service based on IMS, and relates to the realization of simultaneous ringing of a called number and a simultaneous ringing number in a one-number multi-card service based on IMS and an intelligent network service in the VoLTE user voice service based on IMS; as shown in fig. 1 (only key flows are listed, and some flows are not listed), when the called number and the co-vibration number in the IMS-based one-number multi-card service implement co-vibration, the following steps are required:

1. after a calling side calls an inquiry Call Session Control Function (I-CSCF) addressed to a called number of the called number, the I-CSCF selects an S-CSCF of the called number.

2. The called number S-CSCF of the called number is triggered to a called number IMS-based multimedia telephone service standard (MMTel) Server (usually, the MMTel Server is called AS an MMTel Application Server (MMTels) according to iFC), and the MMTel AS judges that the called number is a main number of a first Multi-card and is configured with a co-vibration function, and then sends constructed INVITE messages to all user terminals using the co-vibration number in a co-vibration list.

3. The called number MMTel AS of the called number firstly plays a uniform ring back tone to a user at a calling side, and adopts 183 and a temporary Response confirmation (English full name: professional Response ACKnowledgement, short for Prack) or 200ok message; before the called number of the called number or the ringing number of the called number is answered, the user at the calling side always listens to the uniform ring back tone.

4. The MMTel AS respectively initiates calls to the called number of the called number or the co-vibration number of the called number, wherein the INVITE of the co-vibration number of the called number is newly established, and the INVITE of the called number continues to use the original calling INVITE.

Specifically, the signaling flow related to the co-vibration number shown in fig. 1 includes:

firstly, a called I-CSCF receives an INVITE message carrying an attached number, and routes a call to an S-CSCF where the attached number is located (assuming that a main number and the attached number are respectively registered in different S-CSCF and an Application Server (AS)).

And secondly, triggering the MMTel AS with the attached number by the same-vibration number S-CSCF according to the iFC, judging that the call is a call triggered by the same-vibration service by the AS, and triggering a called service process of the same-vibration number.

And thirdly, after receiving the INVITE call, Ringing the Ringing number B' and replying 180Ringing response.

And fourthly, after receiving the ringing message of the co-ringing number B', the called number MMTel AS is not sent to the calling side any more, because the ringing message of the called number B is sent to the calling side before.

And fifthly, after receiving the answer of the co-vibration number B', sending a 200OK message.

And sixthly, the called number MMTel AS sends a request for canceling the incomplete request to the called number B (a carrier carrying the request for canceling the incomplete request is generally called a CANCEL message), and CANCELs the session.

And seventhly, the called number B side call is released.

As shown in fig. 2 (only key flows are listed, and some flows are not listed), the specific implementation process of the intelligent network service in the voice service of the IMS-based VoLTE user needs to pass through the following steps:

1. the calling user UE-A dials the called user UE-B, and the call request is sent to the S-CSCF through a Session Border Controller (SBC)/Proxy call Session Control Function (P-CSCF).

2. And the S-CSCF triggers the MMTel AS of the calling side according to the IFC subscription information of the calling user.

3. After MMTEL AS processes the basic service, the MMTEL AS sends an INVITE message to S-CSCF (O) to route the called party.

4. The S-CSCF triggers a SCP Server (generally called an SCP Application Server (SCPAS) of the calling party according to the IFC subscription information of the calling party), and carries the calling and called numbers.

5. The SCP AS handles the calling intelligent network service logic. If the calling party opens the same city special case, the SCP AS needs to send specific Data for transmitting a specific User (usually, a message carrying the specific Data for transmitting the specific User is called UDR (User Data Request) to a Home Subscriber Server (HSS) to query the location information of the called User.

6. The SCP AS sends an INVITE message to the S-cscf (o).

7. And the S-CSCF (O) sends the INVITE message to the S-CSCF (T) where the called user is located according to a session initiation Protocol Uniform Resource Identifier (SIP URI).

8. And after receiving the INVITE request, the S-CSCF (T) triggers the call to a called SCP AS according to the IFC information signed by the called user.

9. After receiving the INVITE message, the SCP AS sends a request for User data (UDR for short) to the HSS to query the location information of the called User, and processes the called intelligent network service logic.

10. SCP AS sends INVITE message to S-CSCF (T) route called party;

11. S-CSCF (T) triggers MMTel AS, MMTel AS provides basic service and routing domain selection, and finally routes called UE-B; wherein (T) represents a called party, an exemplary S-CSCF (T) represents a called S-CSCF; (O) stands for calling, exemplary S-CSCF (O) stands for calling S-CSCF.

In the prior art, when a called user opens a same-number type or one-number two-machine (one-number multiple-machine/multiple-card one-number) service, the same-vibration number of a called user answers a call in an area A, and the position information acquired by a network side is the position information of the called number of the called user in an area B, so that the position information cannot be accurately acquired, and charging and control are affected; therefore, the embodiment of the present invention provides an improved technical solution for the above problems, and the specific implementation manner is as follows:

the terms "first" and "second", etc. in the embodiments of the present invention are used to distinguish different objects, not to describe a specific order. For example, the first INVITE request and the second INVITE request are for distinguishing the difference of the content carried in the INVITE requests, rather than for describing a specific order of the different INVITE requests.

An embodiment of the present invention provides a method for acquiring location information, as shown in fig. 3, including:

s101, the SCP server acquires the position information of the called number.

It should be noted that, in practical application, because the location information of the called number needs to be acquired in the intelligent network service, the called number is defaulted to open the intelligent network service; if the called number does not open the intelligent network service, the steps S101, S102, S103 and S104 are not needed.

S102, the MMTEL server obtains a co-vibration number signed by the called number.

It should be noted that, in practical applications, if the called number does not sign a co-vibration number, the location information stored by the SCP AS is the location information of the called number.

S103, when the MMTEL server determines that the terminal equipment using the co-vibration number answers the call, generating a first INVITE request; wherein the first INVITE request comprises: and (5) carrying out simultaneous vibration number.

S104, the SCP server receives the first INVITE request, and when the fact that the first INVITE request contains information indicating that the position information of the co-vibration number is inquired is determined, the position information of the co-vibration number is obtained, and the position information of the called number is replaced by the position information of the co-vibration number.

It should be noted that, AS shown in fig. 4, since the MMTeL AS cannot know the called number, a second INVITE request needs to be generated after the location information of the called number is obtained, where the second INVITE request carries information indicating to open an intelligent network service; therefore, the MMTEL server can know whether the called number opens the intelligent network service by judging whether the INVITE request carries information indicating the opening of the intelligent network service; for example, AS shown in fig. 4 and fig. 7, an INVITE request returned by the SCP AS to the S-CSCF may carry an identifier X; when the MMTEL server receives an INVITE request forwarded by the S-CSCF and carries the identifier X, the MMTEL server can know that the called number opens the intelligent network service; if the MMTEL server receives the INVITE request forwarded by the S-CSCF, the ID X is not carried in the INVITE request; therefore, the called number does not open the intelligent network service, and the MMTEL server directly accesses the called number to the called continuing flow without performing step S103 and step S104.

It should be noted that, in practical applications, the SIP protocol defines a standard called connection procedure, and the called connection procedure referred to herein is a called connection procedure defined by the SIP protocol.

It should be noted that, as shown in fig. 7, step S101, step S102, step S103 and step S104 are added to the modified call flow of the called intelligent network service; after receiving the INVITE request, the S-cscf (t) triggers the call to the called side SCP AS according to the IFC information signed by the called user; after SCP AS receives the INVITE message, the SCP AS sends UDR to HSS to inquire the position information of the called user.

If the SCP AS receives the User Data Answer (User Data Answer, UDA for short) returned by the HSS AS failure information, the called position information is stored AS the position information of the called number of the called User; SCP AS processes the called intelligent network service logic and carries a special mark X in the INVITE request returned to S-CSCF (T); the identifier X may be implemented by letters, numbers, or character strings, and may be implemented by any field or extension field in the INVITE request.

And (T) triggering the MMTel AS through the IFC, and if the MMTEL AS finds that X is carried in the INVITE request and the called party opens the same number type or one number double machine (one number multiple machines/one number multiple cards) service, creating a temporary record for the called number, wherein the temporary record comprises the information such AS an attached number list, an identifier X and a subsequent identifier associated with the called number.

The MMTel AS triggers the logic of the called basic service and the called same-number class or one-number double-machine (one-number multiple machines/one-number multiple cards) simultaneous ringing service.

The MMTEL AS receives a 200OK response of answering with the ringing number, searches and associates whether the answering number is in a temporary record, finds that the answering number belongs to an attached number list in the temporary record, and constructs a new INVITE request; wherein, the expression form of the INVITE request is specified in a Session Initiation Protocol (SIP), wherein A represents the calling number of a calling user, and B represents the called number of a called user; for convenience, in the newly constructed INVITE request, a is defined AS a ringing number for receiving a call, V is defined AS an SCP AS routing address, and carries a called number and an identity Y of a called user.

The called number can be realized by any existing field or extension field in the INVITE request, the identification Y can be realized by letters, numbers, character strings and the like, and can be realized by any field or extension field in the INVITE request; the indication of the symbol Y may be the same as or different from the indication of the symbol X.

S-CSCF (T) routes the INVITE to SCP AS according to the called address; SCP AS judges that the INVITE request carries the identification Y, reads the calling number information in the INVITE request, sends a UDR request to HSS, and inquires the position information of the co-vibration number for answering the call; and meanwhile, reading the called number in the INVITE request, finding out the stored related session information and the stored call bill according to the called number, and replacing the position information of the called number with the position information of the co-vibration number.

Illustratively, in scenario one, the user's main card number B is an intelligent network user, and subscribes to a one-number-multiple-machine service, the associated card 1 is B', and the associated card 2 is B ". When calling number a calls number B, B, B' and B "ring simultaneously.

Calling number A calls number B, and an S-CSCF registered by number B receives a called INVITE request, wherein a calling party is calling number A, and a called party is number B; the S-CSCF firstly triggers to a called SCP AS according to the iFC triggering rule and executes the intelligent network service logic; SCP AS executes intelligent network service logic, and if the logic is found to contain a UDR/UDA (User Data Answer) position information acquisition flow to HSS, the logic adds an identifier SCP _ loc in an INVITE request returned to S-CSCF; the S-CSCF triggers the MMTEL AS registered to the number B according to the iFC triggering rule; the MMTEL AS finds that the INVITE request carries an identification scp _ loc, and a number B signs a number one multi-phone service, and a temporary record is stored for the number B; illustratively, the format of the temporary record is:

the MMTEL AS judges that the number B signs a number-one multi-phone service, the associated numbers are B 'and B', the MMTEL AS issues three INVITE requests to the S-CSCF, and the three INVITE requests are respectively AS follows: the calling party is a calling number A, and the called party is a number B; the calling party is a calling number A, the called party is a number B', the calling party is a calling number A, and the called party is a number B "; when the attached terminal B' answers, a 200OK response is sent.

The MMTEL AS receives the 200OK response sent by the B ', searches and associates the previously stored temporary record id _1, and finds that the B' belongs to the attached number list; the MMTEL AS constructs a new INVITE request, wherein a calling party is a number B', a called party is an SCP routing address, carries a correlation number B and an identification scpLoc and sends the correlation number B and the identification scpLoc to the S-CSCF; the S-CSCF routes the request to the SCP AS according to the called number address of the INVITE request; SCP AS judges the called number of the INVITE request AS the routing address of the equipment; SCP AS judges that the INVITE request contains an identification scpLoc; SCP AS triggers a UDR/UDA position information acquisition flow to HSS according to a calling number B 'and an identification SCP _ loc in the INVITE request, and obtains position information L of B'; and the SCP AS finds the stored B related session information and the stored call bill according to the associated number B in the INVITE request, and updates the position information in the B related session information and the call bill to the position information L of the B'.

In an exemplary scenario two, the user main card number B is an intelligent network user, and signs a number one multi-phone service, the associated card 1 is B', and the associated card 2 is B ". When calling number a calls number B, B, B' and B "ring simultaneously.

Calling number A calls number B, and an S-CSCF registered by number B receives a called INVITE request, wherein a calling party is calling number A, and a called party is number B; the S-CSCF firstly triggers to a called SCP AS according to the iFC triggering rule and executes the intelligent network service logic; SCP AS executes intelligent network service logic, and if the logic finds that the logic contains a UDR/UDA position information acquisition flow to HSS, the SCP AS adds an identifier SCP _ loc in an INVITE request returned to S-CSCF; the S-CSCF triggers the MMTEL AS registered to the number B according to the iFC triggering rule; the MMTEL AS finds that the INVITE request carries an identification scp _ loc, and a number B signs a number one multi-phone service, and a temporary record is stored for the number B; illustratively, the format of the temporary record is:

the MMTEL AS judges that the number B signs a number-one multi-phone service, the associated numbers are B 'and B', the MMTEL AS issues three INVITE requests to the S-CSCF, and the three INVITE requests are respectively AS follows: the calling party is a calling number A, and the called party is a number B; the calling party is a calling number A, the called party is a number B ', the calling party is the calling number A, the called party is a number B', the main terminal B answers and sends a 200OK response; MTEL AS receives 200OK response sent by B, searches and associates temporary record id _1 stored before the response, and finds that B belongs to the main number; the MMTEL AS executes the normal called continuing process without triggering the position acquisition updating process.

Illustratively, scenario three, the user main card number B is a non-intelligent network user, a subscription number one multi-phone service is provided, the associated card 1 is B', and the associated card 2 is B ". When calling number a calls number B, B, B' and B "ring simultaneously.

Calling number A calls number B, and an S-CSCF registered by number B receives a called INVITE request, wherein a calling party is calling number A, and a called party is number B; the S-CSCF triggers the MMTEL AS registered to the number B according to the iFC triggering rule; and the MMTELAS finds that the INVITE request does not carry the identification scp _ loc, and the number B signs a one-number multi-machine service, and then directly executes a normal one-number multi-machine service process.

In the method for acquiring location information provided by the embodiment of the invention, when a called user opens a same number class or a one number double machine (one number multiple machines/one number multiple cards) service, the same vibration number (same vibration number) of a called user answers a call in an area A, and an SCP server acquires location information of the called number as the location information of the called number (called number) of the called user in an area B; therefore, when the MMTEL server determines that the terminal device using the co-vibration number answers the call, an INVITE request indicating information for inquiring the position information of the co-vibration number is generated; the SCP server acquires the position information of the co-vibration number according to the INVITE request, and replaces the position information of the called number with the position information of the co-vibration number, so that the position information of a terminal which actually answers the call can be accurately acquired; the method solves the problem that when the called user opens the same number class or one number double machine (multi-machine/multi-card) service, the same vibration number of the called user answers the call in the area A, and the position information acquired by the network side is the position information of the called number of the called user in the area B, so that the position information can not be accurately acquired, thereby influencing the charging and the management and control in the prior art.

The second embodiment of the present invention provides an SCP server 11, as shown in fig. 8, including:

a transceiver unit 110, configured to acquire location information of a called number;

the transceiver unit 110 is further configured to receive a first INVITE request sent by the MMTEL server; wherein the first INVITE request comprises: a co-vibration number;

a processing unit 111, configured to, when it is determined that the first INVITE request received by the transceiving unit 110 includes information indicating to query the location information of the co-vibration number, acquire the location information of the co-vibration number and replace the location information of the called number acquired by the transceiving unit 110 with the location information of the co-vibration number.

Optionally, the processing unit 111 is further configured to generate a second INVITE request; wherein, the second INVITE request includes information indicating to open the intelligent network service.

Optionally, the processing unit 111 is specifically configured to, when it is determined that the first INVITE request received by the transceiver unit 110 includes information indicating that location information of the co-vibration number is queried and the first INVITE request includes a routing address of an SCP server, obtain location information of the co-vibration number.

In the SCP server provided in the embodiment of the present invention, when the called subscriber activates the same-number class or one-number dual-phone (one-number multi-phone/one-number multi-card) service, the same-vibration number of the called subscriber answers the call in the area a, and the SCP server obtains the location information of the called number as the location information of the called number of the called subscriber in the area B; acquiring the position information of the co-vibration number according to the INVITE request sent by the MMTEL server, and replacing the position information of the called number with the position information of the co-vibration number, so that the position information of a terminal which actually answers a call can be correctly acquired; the method solves the problem that when the called user opens the same number class or one number double machine (multi-machine/multi-card) service, the same vibration number of the called user answers the call in the area A, and the position information acquired by the network side is the position information of the called number of the called user in the area B, so that the position information can not be accurately acquired, thereby influencing the charging and the management and control in the prior art.

Third embodiment, an embodiment of the present invention provides an MMTEL server 12, as shown in fig. 9, including:

the data transceiver unit 120 is configured to acquire a co-vibration number signed by the called number;

a data processing unit 121, configured to generate a first INVITE request when determining that the terminal device using the co-vibration number obtained by the data transceiver unit 120 answers the call; wherein the first INVITE request comprises: and (5) carrying out simultaneous vibration number.

Optionally, the data transceiver unit 120 is further configured to receive a second INVITE request sent by the SCP server; the data processing unit 121 is specifically configured to, when it is determined that the second INVITE request acquired by the data transceiver unit 120 includes information indicating that an intelligent network service is opened, acquire a co-vibration number signed by a called number.

Optionally, the data processing unit 121 is further configured to create a temporary record, where the temporary record includes: a called number and a co-vibration number; the data processing unit is specifically used for comparing whether the number used by the terminal equipment is the same as the called number or the co-vibration number in the temporary record or not when the terminal equipment answers the call; when the number used by the terminal equipment is the same as the same vibration number in the temporary record, generating a first INVITE request; or when the number used by the terminal equipment is the same as the called number in the temporary record, triggering the called connection process.

When the called user activates the same-number class or one-number double-machine (one-number multi-machine/one-number multi-card) service, the same-vibration number of the called user answers the call in the area A, and the SCP server acquires the position information of the called number as the position information of the called number of the called user in the area B; therefore, when the MMTEL server determines that the terminal device using the co-vibration number answers the call, an INVITE request indicating information for inquiring the position information of the co-vibration number is generated; the SCP server acquires the position information of the co-vibration number according to the INVITE request, and replaces the position information of the called number with the position information of the co-vibration number, so that the position information of a terminal which actually answers the call can be accurately acquired; the method solves the problem that when the called user opens the same number class or one number double machine (multi-machine/multi-card) service, the same vibration number of the called user answers the call in the area A, and the position information acquired by the network side is the position information of the called number of the called user in the area B, so that the position information can not be accurately acquired, thereby influencing the charging and the management and control in the prior art.

In a fourth embodiment, the present invention provides an IMS1, which includes any SCP server 11 provided in the second embodiment and any MMTEL server 12 provided in the third embodiment.

In the IMS provided by the embodiment of the present invention, when the called subscriber activates the same-number class or one-number dual-phone (one-number multi-phone/one-number multi-card) service, the same-ringing number of the called subscriber answers the call in the area a, and the SCP server obtains the location information of the called number as the location information of the called number of the called subscriber in the area B; therefore, when the MMTEL server determines that the terminal device using the co-vibration number answers the call, an INVITE request indicating information for inquiring the position information of the co-vibration number is generated; the SCP server acquires the position information of the co-vibration number according to the INVITE request, and replaces the position information of the called number with the position information of the co-vibration number, so that the position information of a terminal which actually answers the call can be accurately acquired; the method solves the problem that when the called user opens the same number class or one number double machine (multi-machine/multi-card) service, the same vibration number of the called user answers the call in the area A, and the position information acquired by the network side is the position information of the called number of the called user in the area B, so that the position information can not be accurately acquired, thereby influencing the charging and the management and control in the prior art.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A method for acquiring position information is characterized by comprising the following steps:

the SCP server acquires the position information of the called number;

the MMTEL server acquires a co-vibration number signed by the called number;

the MMTEL server creates a temporary record, wherein the temporary record comprises: the called number and the co-vibration number;

when the MMTEL server determines that the terminal equipment using the co-vibration number answers the call, generating a first INVITE request, wherein the steps comprise: when the MMTEL server determines that the terminal equipment answers the call, comparing whether the number used by the terminal equipment is the same as the called number or the co-vibration number in the temporary record, and generating a first INVITE request when the number used by the terminal equipment is the same as the co-vibration number in the temporary record; wherein the first INVITE request comprises: the co-vibration number;

and the SCP server receives the first INVITE request, and when the fact that the first INVITE request contains information indicating that the position information of the co-vibration number is inquired and the first INVITE request contains a routing address of the SCP server is determined, the position information of the co-vibration number is obtained and the position information of the called number is replaced by the position information of the co-vibration number.

2. The method according to claim 1, wherein after the SCP server obtains the location information of the called number, the method further comprises:

the SCP server generates a second INVITE request;

the MMTEL server acquires the co-vibration number signed by the called number, and the method comprises the following steps:

and the MMTEL server receives the second INVITE request, and acquires the co-vibration number signed by the called number when the second INVITE request is determined to contain the information indicating the opening of the intelligent network service.

3. An SCP server, comprising:

the receiving and sending unit is used for acquiring the position information of the called number;

the receiving and sending unit is further configured to receive a first INVITE request sent by an MMTEL server, where the first INVITE request is used to compare whether a number used by the terminal device is the same as the called number or the co-vibration number in a temporary record when the MMTEL server determines that the terminal device answers a call, and generate the first INVITE request when the number used by the terminal device is the same as the co-vibration number in the temporary record, where the temporary record creates a temporary for the MMTEL server, and the temporary record includes the called number and the co-vibration number; wherein the first INVITE request comprises: a co-vibration number;

and the processing unit is used for acquiring the position information of the co-vibration number and replacing the position information of the called number acquired by the transceiving unit with the position information of the co-vibration number when the first INVITE request received by the transceiving unit is determined to contain information indicating to inquire the position information of the co-vibration number and the first INVITE request contains the routing address of the SCP server.

4. An SCP server as claimed in claim 3, characterised in that the processing unit is further adapted to generate a second INVITE request; wherein, the second INVITE request includes information indicating to open an intelligent network service.

5. An MMTEL server, comprising:

the data receiving and sending unit is used for acquiring a co-vibration number signed by the called number;

a data processing unit for creating a temporary record, wherein the temporary record comprises: the called number and the co-vibration number;

the data processing unit is further configured to compare whether a number used by the terminal device is the same as the called number or the co-vibration number in the temporary record when the terminal device using the co-vibration number acquired by the data transceiver unit answers a call, and generate a first INVITE request when the number used by the terminal device is the same as the co-vibration number in the temporary record; wherein the first INVITE request comprises: the co-vibration number.

6. The MMTEL server of claim 5, wherein the data transceiver unit is further configured to receive a second INVITE request sent by an SCP server;

the data processing unit is specifically configured to, when it is determined that the second INVITE request acquired by the data transceiver unit includes information indicating that an intelligent network service is opened, acquire a co-vibration number signed by the called number.

7. An IMS, comprising an SCP server according to claim 3 or 4 and an MMTEL server according to claim 5 or 6.