CN105991573A - Calling method and Internet protocol multimedia system IMS domain network side equipment - Google Patents

Abstract

The embodiment of the present invention discloses a call method, which is applied to network side equipment in the Internet Protocol Multimedia System (IMS) domain. The method includes: receiving a first call request, wherein the first call request carries a main The calling number and the called public service short number; obtain the area identification corresponding to the calling number, wherein the area identification is used to characterize the home area of the calling number; add the An area identifier, generating a second call request; sending the second call request to the circuit-switched CS domain network side device corresponding to the home area, so as to instruct the CS domain network side device to call the Called the public service short number. The embodiment of the invention also discloses an Internet protocol multimedia system IMS domain network side equipment.

Description

Calling method and internet protocol multimedia system IMS domain network side equipment

technical field

The invention relates to the field of network communication, in particular to a calling method and an Internet protocol multimedia system IMS domain network side device.

Background technique

With the continuous development of communication technology, a new form of multimedia services, that is, IP Multimedia Subsystem (IMS, IP Multimedia Subsystem) has emerged, which can meet the needs of current end customers for newer and more diverse multimedia services , not only can realize Internet telephone service, but also can more effectively manage network resources, user resources and application resources.

Take the Internet telephony business as an example. When a user encounters an emergency in District B of City A, he needs to call the public service short number 110 through the terminal. The corresponding number of the terminal is 001-12345. After the IMS system receives the call request from the user, , according to the calling number 001-12345 carried in the call request, it is determined that the calling number belongs to city A, then, the IMS system sends the call request to the network side device in the circuit switching (CS, CircuitSwitch) domain, and the CS The domain network side equipment processes the call request and sends the call request to the 110 headquarters in city A. At this time, after receiving the call request, the 110 headquarters in city A needs to manually check the specific attribution of the calling number 001-12345 dialed to 110 in District B of City A, and then transfer the call request to Sub-Department 110 in District B. It can be seen that in the above call process, the user's call request cannot be directly sent to Sub-Department 110 in District B of City A where the terminal is located. In this way, the user needs to wait for a long time before his call request can be sent to the corresponding called party. Then, during the waiting period, it is possible that the emergency situation encountered by the user has become more serious. , or some accidents have occurred, which will cause a series of bad consequences.

Therefore, there is a technical problem in the prior art that the calling system processes the call request with low efficiency.

Contents of the invention

In view of this, the embodiment of the present invention expects to provide a calling method and Internet protocol multimedia system IMS domain network side equipment, which are used to directly call the called public service short number corresponding to the home area of the calling number, and improve the calling system's response to call requests. processing efficiency and provide a good user experience.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

In the first aspect, an embodiment of the present invention provides a calling method, the method including: receiving a first call request, wherein the first call request carries a calling number and a called public service short number; obtaining the An area identification corresponding to the calling number, wherein the area identification is used to characterize the home area of the calling number; adding the area identification to the first call request to generate a second call request; The second call request is sent to the circuit switching CS domain network side device corresponding to the home area, to instruct the CS domain network side device to call the called public service short number corresponding to the home area.

Further, the obtaining the area identifier corresponding to the calling number includes: querying the area character string corresponding to the calling number in a preset user database; obtaining the corresponding area character string according to the area character string logo.

Further, the obtaining the corresponding region identifier according to the region character string includes: obtaining the corresponding region identifier according to a pre-stored correspondence between region character strings and region identifiers.

Further, adding the area identifier to the first call request to generate a second call request includes: adding the area identifier to the called public service short number to generate the second call request .

Further, the adding the area identifier in the first call request to generate the second call request includes: adding the area identifier to the area identifier bit in the first call request to generate the second call request. call request.

In a second aspect, an embodiment of the present invention provides an Internet protocol multimedia system IMS domain network side device, the IMS domain network side device includes: a receiving unit, an obtaining unit, a generating unit, and a sending unit; wherein the receiving unit, For receiving a first call request, wherein the first call request carries a calling number and a called public service short number; the obtaining unit is configured to obtain an area identifier corresponding to the calling number, wherein, The area identifier is used to characterize the home area of the calling number; the generating unit is configured to add the area identifier to the first call request to generate a second call request; the sending unit is configured to sending the second call request to the circuit switching CS domain network side device corresponding to the home area, to instruct the CS domain network side device to call the called public service short number corresponding to the home area.

Further, the obtaining unit is specifically configured to query a preset user database for an area character string corresponding to the calling number; and obtain the corresponding area identifier according to the area character string.

Further, the obtaining unit is specifically configured to obtain the corresponding region identifier according to the pre-stored correspondence between region character strings and region identifiers.

Further, the generating unit is specifically configured to add the area identifier to the called public service short number to generate the second call request.

Further, the generating unit is specifically configured to add the area identifier to the area identifier bit in the first call request to generate the second call request.

In the calling method and IMS domain network side equipment provided by the embodiment of the present invention, when a terminal calls a called public service short number, the IMS domain network side equipment obtains the area identifier of the calling number corresponding to the terminal, and adds the area identifier to the first In the call request, a second call request carrying the area identifier is generated, and the second call request is sent to the CS domain network-side device in the home area corresponding to the area identifier, and the CS domain network-side device calls the received party in the home area. To call a public service short number, it can be known from the above that since the network side device in the IMS domain obtains the area identifier corresponding to the calling number, it can quickly determine the home area where the calling number is located, so the network side device in the IMS domain can send the call request Directly send to the CS domain network side device corresponding to the calling number's home area, and directly and quickly call the called public service short number in the calling number's home area, thus effectively improving the call system's handling of call requests efficiency and provide a good user experience.

Description of drawings

FIG. 1 is a schematic diagram of a system architecture of a calling system in an embodiment of the present invention;

FIG. 2 is a schematic flowchart of a method for calling by a calling system in an embodiment of the present invention;

FIG. 3 is a schematic flow diagram of a method for calling a public service short number 110 by the calling system in an embodiment of the present invention;

FIG. 4 is a schematic flowchart of a method for making a call by an IMS domain network side device in an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of an IMS domain network side device in an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

An embodiment of the present invention provides a call system. FIG. 1 is a schematic diagram of the system architecture of the call system in the embodiment of the present invention. As shown in FIG. 1 , the system includes: a terminal 10, an IMS domain network side device 20, and a CS domain network side A device 30; wherein, the terminal 10 is a device with a fixed home area, such as a fixed phone.

In combination with the embodiment of the present invention, in the above system, the terminal 10 is configured to send a first call request to the IMS domain network side device 20, wherein the first call request carries the calling number and the called public service short number;

The IMS domain network side device 20 is configured to receive the first call request; obtain the area identification corresponding to the calling number, wherein the area identification is used to represent the home area of the calling number; add the area identification to the first call request, and generate the second Two call requests; sending the second call request to the CS domain network side device 30 corresponding to the home area, to instruct the CS domain network side device 30 to call the called public service short number corresponding to the home area;

The CS domain network side device 30 is configured to call the corresponding called public service short number in the home area where the calling number is located.

The flow of the method for making a call by the above call system will be described in detail below.

FIG. 2 is a schematic flow diagram of a method for calling by the calling system in an embodiment of the present invention. As shown in FIG. 2, the method includes:

S201: The terminal sends a first call request to the network side device in the IMS domain, where the first call request carries the calling number and the called public service short number;

Specifically, when the terminal needs to call the called public service short number, the terminal sends the first call request carrying the calling number and the called public service short number to the network side device in the IMS domain. For example, a user in District B of City A needs to call 110 in an emergency. At this time, the user dials 110 through the terminal, and the terminal carries the calling number 001-12345 and the called number 110 in the session initiation protocol (SIP, SessionInitiation) through the cable. Protocol) request to the network side device in the IMS domain.

S202: The network side device in the IMS domain searches the preset user database for the area character string corresponding to the calling number according to the first call request;

Specifically, the network side device in the IMS domain analyzes the first call request, obtains the calling number, and then queries the area string corresponding to the calling number in the preset user database; for example, the proxy call session control in the network side device in the IMS domain Function (P-CSCF, Proxy-Call Session Control Function) device receives the above SIP request, parses the SIP request, and obtains the calling number as 001-12345, and the P-CSCF device in the IMS domain network side device checks the calling number When 001-12345 is registered in the IMS network, send the SIP request to the calling side Service-Call Session Control Function (S-CSCF, Service-Call Session Control Function) device in the network side device of the IMS domain, and the S-CSCF device forwards the request The SIP request is sent to the Inquiry Call Session Control Function (I-CSCF, Interrogating-Call Session Control Function) device in the IMS domain network side device, and the Home Subscriber Server (HSS, Home Subscriber Server) of the I-CSCF device in the IMS domain network side device ) to query the area string corresponding to the calling number 001-12345 is "Ash.Bq.china.com".

In practical applications, when a terminal registers on the IMS network, the HSS will store the registered terminal number and the terminal's attribution information. Therefore, the HSS pre-stores all the numbers that have been registered in the IMS network. Attribution area information.

It should be noted that the area character string corresponding to the calling number is a character string in a self-defined format, which may be the above format or other formats, which are not specifically limited in the present invention.

S203: The network side device in the IMS domain obtains the corresponding area identifier according to the area character string, where the area identifier is used to represent the area to which the calling number belongs;

Specifically, the network side device in the IMS domain obtains the corresponding area ID according to the pre-stored correspondence between the area character string and the area ID. For example, the I-CSCF device obtains the area string corresponding to the calling number 001-12345 as "Ash.Bq.china.com", that is, the attribution area of the calling number 001-12345 is District B of City A, and then the I-CSCF device Send the area string "Ash.Bq.china.com" to the S-CSCF device, and the S-CSCF device obtains the area string "Ash.Bq.china.com" according to the correspondence between the pre-stored area string and the area identifier. The area ID corresponding to ".com" is "01", that is, the area ID corresponding to the calling number 001-12345 is "01".

S204: The IMS domain network side device adds an area identifier to the first call request, and generates a second call request;

In practical applications, the specific implementation manners of S204 may be but not limited to the following two types:

In the first type, the network side device in the IMS domain adds an area identification prefix before the called public service short number or adds an area identification suffix after the called public service short number to generate the second call request. For example, the above-mentioned S-CSCF device identifies the area corresponding to the calling number 001-12345 as "01" and adds it before the called number 110, and changes the called number to 01110, or the S-CSCF device converts the calling number 001-12345 The corresponding area identifier is "01" added after the called number 110, and the called number is converted to 11001 to generate a new SIP request. At this time, the new SIP request carries the calling number 001-12345 and the converted The called code number is 01110 or 11001.

The second method is to set an area identification bit in the call request, which is used to store the area identification corresponding to the home area of the calling number, and the IMS domain network side device can generate the second call request by adding the area identification at the area identification bit. . For example, the S-CSCF adds the area identifier "01" corresponding to the calling number 001-12345 to the area identifier in the SIP request to generate a new SIP request. At this time, the new SIP request carries the calling number Number 001-12345, called number 110, and area identifier "01".

Of course, S204 may also have other specific implementation manners, which are not specifically limited in the present invention.

S205: The network side device in the IMS domain sends the second call request to the network side device in the CS domain corresponding to the home area;

For example, the S-CSCF device sends a new SIP request containing the area identifier "01" to the Media Gateway Control Function (MGCF, Media Gateway Control Function) device, and the MGCF device analyzes the new SIP request to obtain the calling number 001- 12345 and the converted called number 11001, according to the correspondence between the pre-stored area identification and the home area, obtain the home area corresponding to the area identification "01" of the calling number 001-12345 as District B of City A. At this time, The MGCF device converts the new SIP request into an Integrated Services Digital Network User Part/Bearer Independent Call Control protocol (ISUP/BICC, Integrated Services Digital Network User Part/Bearer Independent Call Control protocol) signaling request, and sends it to City A, B The mobile switching center (MSC, Mobile Switching Center) device of the CS domain network side device in the zone.

S206: The CS domain network side device calls the called public service short number corresponding to the home area.

Specifically, after the MSC device receives the second call request from the network side device in the IMS domain, it analyzes the second call request to obtain the called number, and according to the called number, obtains the called public service short number and the area of the calling number According to the corresponding relationship between the area identification and the home area, the home area of the calling number is obtained, and then the MSC device directly calls the called public service short number in the home area. For example, the MSC device in the CS domain network side device analyzes the ISUP/BICC signaling request, obtains the calling number 110 and the area identifier "01" of the calling number 001-12345, and according to the pre-stored area identifier and the home area Corresponding relationship, determine that the home area of 001-12345 is District B of City A, and then directly call 110 in District B of City A.

The following describes the flow of the method described in one or more of the above-mentioned embodiments by taking the user calling 110 in district B of city A through the terminal as an example.

FIG. 3 is a schematic flow diagram of a method for calling a public service short number 110 by the calling system in an embodiment of the present invention;

S301: The terminal sends a SIP request carrying the calling number 001-12345 and the called number 110 to the P-CSCF device;

S302: The P-CSCF device checks that the calling number 001-12345 has been registered in the IMS network;

S303: The P-CSCF device sends the SIP request to the S-CSCF device;

S304: the S-CSCF device sends the SIP request to the I-CSCF device;

S305: The I-CSCF device queries the calling number 001-12345 in the HSS, and obtains the corresponding area string as "Ash.Bq.china.com";

S306: The I-CSCF device sends the area character string "Ash.Bq.china.com" to the S-CSCF device;

S307: The S-CSCF device obtains the corresponding area ID as "01" according to the pre-stored correspondence between the area character string and the area ID;

S308: The S-CSCF device adds an area identification suffix "01" after the called number 110 to generate a new SIP request;

Wherein, the called number is changed to 11001, and the new SIP request carries the calling number 001-12345 and the changed called number 11001;

S309: the S-CSCF device sends a new SIP request to the MGCF device;

S310: The MGCF device analyzes the new SIP request, and obtains that the belonging area corresponding to the area identifier "01" is District B of City A;

S311: The MGCF device converts the new SIP request into an ISUP/BICC signaling request;

S312: The MGCF device sends the ISUP/BICC signaling request to the MSC device;

S313: The MSC device analyzes the ISUP/BICC signaling request, and obtains that the called number is 110, and the home area is District B of City A;

S314: The MSC device calls 110 in district B of city A.

At this time, the calling system may directly connect the call request of the terminal to the department 110 in the home area of the terminal.

It can be seen from the above that when the terminal calls the called public service short number, because the device on the IMS domain network side obtains the area identifier corresponding to the calling number, it can quickly determine the home area where the calling number is located, so the IMS domain network side The device can directly send the call request to the CS domain network side device corresponding to the calling number's home area, so that it can directly call the called public service short number in the home area, thus effectively improving the calling system's response to call requests. The processing efficiency provides a good user experience.

Based on the same inventive concept, an embodiment of the present invention provides a call method, which is applied to the IMS domain network side device described in one or more embodiments above.

Fig. 4 is a schematic flow diagram of a method for making a call by an IMS domain network side device in an embodiment of the present invention. As shown in Fig. 4, the method includes:

S401: The IMS domain network side device receives a first call request, where the first call request carries a calling number and a called public service short number;

S402: The network side device in the IMS domain obtains the area identifier corresponding to the calling number, where the area identifier is used to represent the home area of the calling number;

In this embodiment, S402 may be: the IMS domain network side device queries the area string corresponding to the calling number in the preset user database; and obtains the corresponding area identifier according to the area string.

Further, S402 may be: the IMS domain network side device obtains the corresponding area identifier according to the pre-stored correspondence between the area character string and the area identifier.

S403: The IMS domain network side device adds an area identifier to the first call request, and generates a second call request;

In this embodiment, S403 may be: the IMS domain network side device adds an area identifier to the called public service short number to generate a second call request; or, S403 may be: the IMS domain network side device adds the area identifier in the first call request Add the area identification to the area identification bit to generate the second call request.

S404: The network side device in the IMS domain sends the second call request to the network side device in the CS domain corresponding to the home area, so as to instruct the network side device in the CS domain to call the called public service short number corresponding to the home area.

Based on the same inventive concept, an embodiment of the present invention provides an IMS domain network side device, where the IMS domain network side device is consistent with the IMS domain network side device described in one or more of the foregoing embodiments.

FIG. 5 is a schematic structural diagram of an IMS domain network side device in an embodiment of the present invention. As shown in FIG. 5 , the IMS domain network side device includes: a receiving unit 51, an obtaining unit 52, a generating unit 53, and a sending unit 54;

Wherein, the receiving unit 51 is used to receive the first call request, wherein the first call request carries the calling number and the called public service short number; the obtaining unit 52 is used to obtain the area identification corresponding to the calling number, wherein , the area identifier is used to characterize the home area of the calling number; the generation unit 53 is used to add the area identification in the first call request to generate the second call request; the sending unit 54 is used to send the second call request to the home area The corresponding CS domain network side device instructs the CS domain network side device to call the called public service short number corresponding to the home area.

Further, the obtaining unit 52 is specifically configured to query a preset user database for an area character string corresponding to the calling number; and obtain a corresponding area identifier according to the area character string.

Further, the obtaining unit 52 is specifically configured to obtain the corresponding region identifier according to the pre-stored correspondence between the region character string and the region identifier.

Further, the generating unit 53 is specifically configured to add an area identifier to the called public service short number to generate the second call request.

Further, the generating unit 53 is specifically configured to add an area identifier to the area identifier bit in the first call request to generate the second call request.

The above-mentioned receiving unit 51 and sending unit 54 can be set in a transceiver in the IMS domain network side equipment, or can be set in the transmitter and receiver respectively, and both the obtaining unit 52 and the generating unit 53 can be set in the IMS domain network side Processors such as CPU and ARM in the device may also be disposed in embedded controllers or system-on-chips, which are not specifically limited in the present invention.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operational steps are performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (10)

1. A calling method is applied to an Internet protocol multimedia system (IMS) domain network side device, and is characterized in that the method comprises the following steps:

receiving a first call request, wherein the first call request carries a calling number and a called public service short number;

obtaining an area identifier corresponding to the calling number, wherein the area identifier is used for representing an attribution area of the calling number;

adding the area identification in the first call request to generate a second call request;

and sending the second call request to the Circuit Switching (CS) domain network side equipment corresponding to the home region to indicate the CS domain network side equipment to call the called public service short number corresponding to the home region.

2. The method of claim 1, wherein the obtaining the area identifier corresponding to the calling number comprises:

inquiring an area character string corresponding to the calling number in a preset user database;

and obtaining the corresponding area identification according to the area character string.

3. The method according to claim 2, wherein said obtaining the corresponding zone id according to the zone string comprises:

and obtaining the corresponding area identification according to the corresponding relation between the pre-stored area character string and the area identification.

4. The method of claim 1, wherein adding the area identifier to the first call request and generating a second call request comprises:

and adding the area identification in the called public service short number to generate the second call request.

5. The method of claim 1, wherein adding the area identifier to the first call request and generating a second call request comprises:

and adding the area identifier to the area identifier bit in the first call request to generate the second call request.

6. An internet protocol multimedia system IMS domain network side device, comprising: a receiving unit, an obtaining unit, a generating unit and a sending unit; wherein,

the receiving unit is used for receiving a first call request, wherein the first call request carries a calling number and a called public service short number;

the obtaining unit is configured to obtain an area identifier corresponding to the calling number, where the area identifier is used to represent an affiliation area of the calling number;

the generating unit is configured to add the area identifier to the first call request, and generate a second call request;

the sending unit is configured to send the second call request to a circuit switched CS domain network side device corresponding to the home region, so as to instruct the CS domain network side device to call the called public service short number corresponding to the home region.

7. The IMS domain network side device according to claim 6, wherein the obtaining unit is specifically configured to query a preset user database for the area character string corresponding to the calling number; and obtaining the corresponding area identification according to the area character string.

8. The IMS domain network side device according to claim 7, wherein the obtaining unit is specifically configured to obtain the corresponding area identifier according to a correspondence between a pre-stored area character string and an area identifier.

9. The IMS domain network side device of claim 6, wherein the generating unit is specifically configured to add the area identifier to the called public service short number, and generate the second call request.

10. The IMS domain network side device according to claim 6, wherein the generating unit is specifically configured to add the area identifier to an area identifier bit in the first call request, and generate the second call request.