CN113286346B

CN113286346B - Communication method, device, storage medium and system

Info

Publication number: CN113286346B
Application number: CN202110491180.8A
Authority: CN
Inventors: 马泽芳; 马瑞涛; 张强; 李晨仪
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-12-27
Anticipated expiration: 2041-05-06
Also published as: CN113286346A

Abstract

The invention discloses a communication method, a device, a storage medium and a system, which relate to the technical field of communication and are used for solving the problem that UE (user equipment) cannot be accessed nearby in special service telephone service, and the method comprises the following steps: receiving a target call request; the target calling request comprises a target position mark and a called number, and the target position mark is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of different operator networks; and determining target short number platform equipment in the called operator network based on the target position identifier and the called number, and sending a target calling request to the target short number platform equipment, wherein the distance between the target short number platform equipment and the UE is less than or equal to a preset threshold value. The embodiment of the invention is applied to a communication system of a fixed voice network.

Description

Communication method, device, storage medium and system

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a communication method, device, storage medium, and system.

Background

Currently, user Equipment (UE) and short number platform equipment under different operator networks can provide special service telephone (e.g. short number such as 119 or 400) service for users. Specifically, as shown in fig. 1, after a user belonging to the operator network a dials a short number through the UE, the UE sends a voice call request to a voice network in the operator network a, where the voice call request includes a called number dialed by the user. The voice network in the carrier network a, after receiving the voice call request, transmits the voice call request to the voice network located in the carrier network B through the gateway office equipment between the carrier networks. Correspondingly, after receiving the voice call request, the voice network of the operator network B sends the voice call request to the operator network B, and the short number platform device of the called number service is borne, so that the short number platform device of the operator network B provides a special service telephone service for the user across the operator network.

However, in the above-mentioned special service telephone service across operator networks, the voice network of the called operator network usually randomly selects the short number platform device corresponding to the called number, and the UE cannot access the nearby short number platform device, which results in that the special service telephone service cannot meet the requirement of the UE for nearby access, and cannot provide better service for the user.

Disclosure of Invention

Embodiments of the present invention provide a communication method, device, storage medium, and system, which are used to solve a problem that a UE cannot access nearby in a service specific telephone service.

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

in a first aspect, a communication method is provided, which is applied to an interrogating call session control function I-CSCF device of a called operator network, and includes: receiving a target call request; the target call request comprises a target position identifier and a called number, wherein the target position identifier is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of different operator networks; and determining target short number platform equipment in the called operator network based on the target position identifier and the called number, and sending a target calling request to the target short number platform equipment, wherein the distance between the target short number platform equipment and the UE is less than or equal to a preset threshold value.

In a second aspect, a communication method is provided, which is applied to an application server of a calling operator network, and includes: receiving an intermediate call request, responding to the intermediate call request, and acquiring an initial position identifier and a called number from the intermediate call request, wherein the initial position identifier is used for reflecting the position of User Equipment (UE) corresponding to a calling number in equipment of a calling operator network; determining a target location identity based on the initial location identity; the target position identification is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of different operators; generating a target call request based on the target position identifier and the called number, and sending the target call request to an inquiry call session control function (I-CSCF) device of a called operator network; the target call request includes a target location identification and a called number.

In a third aspect, a communication method is provided, which is applied to a routing device, and includes: receiving an initial call request sent by User Equipment (UE); the initial call request comprises a called number; responding to the initial calling request, determining an initial position identifier of the UE, and generating an intermediate calling request based on the initial position identifier and a called number; the initial position identification is used for reflecting the position of the UE in the equipment of the calling operator network, and the intermediate call request comprises the initial position identification and a called number; an intermediate call request is sent to an application server of the calling operator network.

The fourth aspect provides an inquiry call session control function (I-CSCF) device, which is applied to a called operator network and comprises a receiving unit, a determining unit and a sending unit; a receiving unit for receiving a target call request; the target calling request comprises a target position mark and a called number, and the target position mark is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of different operator networks; the determining unit is used for determining target short number platform equipment in the called operator network based on the target position identification and the called number after the receiving unit receives the target calling request; and the sending unit is used for sending a target call request to the target short number platform equipment, and the distance between the target short number platform equipment and the UE is smaller than or equal to a preset threshold value.

In a fifth aspect, an application server is provided, where the application server device is applied to a calling operator network and includes a receiving unit, an obtaining unit, a determining unit, a generating unit, and a sending unit; a receiving unit for receiving an intermediate call request; the acquiring unit is used for responding to the intermediate call request received by the receiving unit and acquiring an initial position identifier and a called number from the intermediate call request, wherein the initial position identifier is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of a calling operator network; a determining unit, configured to determine a target location identifier based on the initial location identifier; the target position identification is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of different operators; the generating unit is used for generating a target calling request based on the target position identifier and the called number; a sending unit, configured to send a target call request to an interrogating call session control function I-CSCF device of a called operator network; the target call request includes a target location identification and a called number.

A sixth aspect provides a routing device including a receiving unit, a determining unit, a generating unit, and a transmitting unit; a receiving unit, configured to receive an initial call request sent by a user equipment UE; the initial call request comprises a called number; a determining unit, configured to determine an initial location identifier of the UE in response to the initial call request received by the receiving unit; the generating unit is used for generating an intermediate call request based on the initial position identifier and the called number; the initial position identification is used for reflecting the position of the UE in the equipment of the calling operator network, and the intermediate call request comprises the initial position identification and a called number; a sending unit, configured to send an intermediate call request to an application server of a calling operator network.

In a seventh aspect, there is provided a computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computer, cause the computer to perform the communication method of the first, second or third aspect.

In an eighth aspect, an interrogating call session control function, I-CSCF, device, for use in a called operator network, comprises: a processor and a memory; wherein the memory is used to store one or more programs, the one or more programs comprising computer executable instructions, and when the I-CSCF device is running, the processor executes the computer executable instructions stored by the memory to cause the I-CSCF device to perform the communication method of the first aspect.

In a ninth aspect, an application server device comprises: a processor and a memory; wherein the memory is used for storing one or more programs, the one or more programs comprising computer executable instructions, and when the application server device is running, the processor executes the computer executable instructions stored by the memory to make the application server device execute the communication method of the second aspect.

In a tenth aspect, a routing device comprises: a processor and a memory; wherein the memory is used for storing one or more programs, the one or more programs comprising computer executable instructions, and when the routing device is running, the processor executes the computer executable instructions stored by the memory to make the routing device execute the communication method of the third aspect.

In an eleventh aspect, a communication system includes a routing device, an application server device, and an inquiry call session control function I-CSCF device, where the application server device is connected to the routing device and the inquiry call session control function I-CSCF device, respectively; the routing device is adapted to perform the communication method of the third aspect, the application server device is adapted to perform the communication method of the second aspect, and the I-CSCF device is adapted to perform the communication method of the first aspect.

In a twelfth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the communication method of the first, second or third aspect.

The embodiment of the invention provides a communication method, a communication device, a storage medium and a communication system, which are applied to a communication system of a fixed voice network. Since the target call request includes the target location identifier, and the target location identifier is used to reflect the location of the UE in the devices of different operator networks, the I-CSCF device may determine, based on the location of the UE, the target short number platform device whose distance from the UE is less than or equal to the preset threshold. Therefore, the UE can be accessed to the target short number platform nearby, and special service number service can be provided for the user better.

Drawings

Fig. 1 is a first schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 3 is a first flowchart of a communication method according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating a communication method according to an embodiment of the present invention;

fig. 6 is a third schematic flowchart of a communication method according to an embodiment of the present invention;

fig. 7 is a fourth schematic flowchart of a communication method according to an embodiment of the present invention;

fig. 8 is a schematic flow chart of a communication method according to an embodiment of the present invention;

fig. 9 is a sixth schematic flowchart of a communication method according to an embodiment of the present invention;

fig. 10 is a seventh flowchart illustrating a communication method according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of an I-CSCF device according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of an application server according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a routing device according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of an I-CSCF device according to an embodiment of the present invention;

fig. 15 is a third schematic structural diagram of an I-CSCF device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, "/" means "or" unless otherwise specified, for example, a/B may mean a or B. "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. Further, "at least one" or "a plurality" means two or more. The terms "first", "second", and the like do not necessarily limit the number and execution order, and the terms "first", "second", and the like do not necessarily limit the difference.

The communication method provided by the embodiment of the invention can be suitable for a communication system of a fixed voice network. Fig. 2 shows a schematic structural diagram of the communication system. As shown in fig. 2, the communication system includes a routing device 101, an application server 102 of a calling operator network, and an inquiry call session control function (I-CSCF) device 103 of a called operator network. The application server 102 of the calling operator is connected with the routing device 101 and the inquiry call session control function device 103 of the called operator network, respectively. The application server 102 of the calling operator, the routing device 101, and the query call session control function device 103 of the called operator network may be connected in a wired manner or in a wireless manner, which is not limited in this disclosure. The application server 102 of the calling operator is connected to the inquiry call session control function device 103 of the called operator network in a wireless or wired manner, which is not limited in the embodiment of the present disclosure.

The routing device may be a Session Border Controller (SBC), an Access Gateway (AG), a Media Gateway Control Function (MGCF), and an inter-network session border controller (I-SBC).

The routing device may receive an initial call request of the UE, add location information to the initial call request, generate an intermediary call request including the location information, and send the intermediary call request to an application server of the calling operator network.

The UE may be a terminal device with wired transceiving function, such as a fixed-line home device, a fixed-line dedicated device, a fixed-line legacy user device, a relay user device, and so on.

The application server of the calling operator network may be a multimedia telephony application server (MMTEL AS).

And the application server of the calling operator network is used for extracting the position information in the intermediate call request after receiving the intermediate call request and inquiring the target position identification according to the position information. Further, the application server generates a target call request according to the target location identifier, and sends the target call request including the target location identifier to the I-CSCF device of the called operator network.

And the I-CSCF equipment of the called operator network is used for accessing the UE to the nearby short number platform equipment according to the target position identification in the target call request after receiving the target call request.

The following describes a communication method provided by an embodiment of the present invention with reference to the drawings.

As shown in fig. 3, the communication method provided in the embodiment of the present invention includes the following steps S201 to S210:

s201, the routing equipment receives an initial call request sent by User Equipment (UE).

Wherein, the initial calling request includes the called number.

As a possible implementation manner, the routing device receives the initial call request sent by the UE in a wired connection manner.

It should be noted that the initial call request is a request generated by the UE after the user dials a number through the UE. The calling number is also included in the initial call request.

Illustratively, if the UE is a fixed telephone of a fiber subscriber and the fiber subscriber does not open broadband traffic, the routing device is an AG. In this case, data is transmitted between the UE and the AG through the optical fiber link.

For another example, if the UE is a fixed telephone in a fiber subscriber and the subscriber has a broadband service provisioned, the routing device is an SBC. In this case, data is transmitted between the UE and the SBC through the optical fiber link.

As another example, if the UE is a relay device of a large-client voice subscriber (e.g., an enterprise, a hotel, etc.) (the relay device may be a free voice switch for connecting a call request of the large-client voice subscriber to a public voice network to thereby communicate with the public voice subscriber), the routing device is MGCF or I-SBC. In this case, the UE transmits data with the MGCF or I-SBC via an optical fiber link or an electrical connection.

As another example, if the UE is a conventional fixed network user equipment (e.g., a Public Switched Telephone Network (PSTN) device or a Next Generation Network (NGN) end office user equipment), the routing device is an MGCF. In this case, data transmission is performed between the UE and the MGCF by means of an electrical connection.

S202, the routing equipment responds to the initial call request and determines the initial position identification of the UE.

Wherein the initial location identity is used to reflect the location of the UE in the device of the calling operator network,

as a possible implementation, the routing device generates an initial location identifier according to the identifier of the communication protocol, the routing device identifier, and the location of the routing device in response to the initial call request.

It should be noted that the initial location identifier includes an identifier of a communication protocol, an identifier of a routing device, and a location of the routing device. The communication protocol may be a communication protocol between the routing device and the application server.

For example, when the routing device is an SBC, the initial location identifier may be "sip: sbc yyzzz. City pinyin abbreviation home network domain name ". Wherein sip is an identifier of a communication protocol, sbc is an identifier of a routing device, yy represents an identifier of an administrative area where the routing device is located, and zzzz represents geographical location information of the routing device (the geographical location information generally has no more than 4 characters at most, and has no more than 8 characters in a special case, so that an operator network can recognize the geographical location information).

For another example, when the routing device is an AG, the initial location identification may be "sip: agyzzzz, city pinyin shorthand, home network domain name. The sip is an identifier of a communication protocol, ag is an identifier of a routing device, yy represents an identifier of an administrative area where the routing device is located, and zzzz represents geographical location information of the routing device.

For example, when the routing device is an MGCF, I-SBC, the initial location identifier may be "yyzzzz. Where yy represents an identifier of an administrative area where the routing device is located, and zzzz represents geographical location information of the routing device.

The specific implementation manner of this step may refer to the following description of the embodiment of the present invention, and is not described herein again.

S203, the routing equipment generates a middle calling request based on the initial position identification and the called number.

The mid-call request includes an initial location identifier and a called number.

As a possible implementation, the routing device combines the initial location identification with the called number to generate the mid-call request.

It should be noted that, the mid-call request further includes a calling number, and the initial location identifier may be located before the calling number and the called number, or after the calling number and the called number, or between the calling number and the called number, which is not limited in the embodiment of the present invention.

S204, the routing equipment sends an intermediate call request to an application server of the calling operator network.

Fig. 4 shows another schematic diagram of a communication system. AS shown in fig. 4, the communication system includes UE41, routing device 42 (corresponding to routing device 101 in fig. 2), proxy-call session control function (P-CSCF) device 43, serving-call session control function (S-CSCF) device 44, MMTEL AS45 (corresponding to application server 102 in fig. 2), telephone number Mapping workgroup (e.g., number URI Mapping, ENUM)/Domain Name System (DNS) device 46, interconnection Boundary Control Function (IBCF) device (including IBCF device 471 of the calling operator network and IBCF device 472 of the called operator network), I-CSCF device 48 of the called operator network (corresponding to I-CSCF103 in fig. 2), a plurality of short number platform devices (exemplary, fig. 4 shows only short number schematic 491, 492, and there may be fewer or more short number platform devices in the actual application process).

The routing equipment is connected with the P-CSCF equipment in a wireless or wired mode, the S-CSCF equipment is respectively connected with the P-CSCF equipment, the MMTEL AS, the IBCF equipment of the calling operator network and the ENUM/DNS equipment in a wireless or wired mode, the IBCF equipment of the called operator network is respectively connected with the IBCF equipment of the calling operator network and the I-CSCF equipment of the called operator network in a wired or wireless mode, and the I-CSCF equipment is respectively connected with the S-CSCF equipment and the plurality of short number platform equipment in a wired or wireless mode.

It should be noted that both the calling operator network and the called operator network include an IP Multimedia System (IMS), IBCF devices are both present in both the calling operator network and the called operator network, and communication is performed between the calling operator network and the called operator network through the IBCF devices.

As a possible implementation, in connection with fig. 4, the routing device routes the mid-call request to the P-CSCF device. Accordingly, the P-CSCF device forwards the intermediate call request to the S-CSCF device after receiving the intermediate call request. Further, the S-CSCF device sends an intermediary call request to the application server.

Correspondingly, the application server of the calling operator network receives the intermediate call request according to the sending flow.

S205, the application server responds to the intermediate call request, and obtains the initial position identification and the called number from the intermediate call request.

As a possible implementation manner, the application server parses the intermediate call request according to a preset first parsing protocol to obtain the initial location identifier and the called number.

It should be noted that the first parsing protocol may be set in the application server by the operation and maintenance staff in advance.

S206, the application server determines the target position identification based on the initial position identification.

The target location identifier is used for reflecting the location of the user equipment UE corresponding to the calling number in the devices of different operators.

As a possible implementation manner, the application server of the calling operator network queries, based on the initial location identifier, a target area code and/or a target inter-network area identifier of an area where the UE is located from a database, and uses the queried target area code and/or target inter-network area identifier as the target location identifier. The target area code is used for reflecting the area code of the position of the UE, and the target inter-network area identification code is used for reflecting the area identification code of the position of the UE.

S207, the application server generates a target calling request based on the target position identification and the called number.

The target calling request comprises a target position identifier and a called number.

As a possible implementation manner, the application server combines the target location identifier and the called number to generate the target call request.

It should be noted that the target call request further includes a calling number, and the target location identifier may be located before the calling number and the called number, may also be located after the calling number and the called number, and may also be located between the calling number and the called number.

S208, the application server sends the target call request to the I-CSCF equipment of the called operator network.

As a possible implementation, in conjunction with fig. 4, an application server of the calling operator network routes the target call request to the S-CSCF device, which sends the target call request to the ENUM device/DNS device to determine the next hop routing information. After receiving the target call request, the ENUM device/DNS device judges whether the called number belongs to the calling operator network or the called operator network according to the called number in the target call request. And under the condition that the called number is determined to belong to the called operator network, the ENUM device/DNS device takes the address of the IBCF device of the calling operator network as next hop routing information and sends the next hop routing information to the S-CSCF device. And after receiving the next hop routing information, the S-CSCF equipment sends a target call request to the IBCF equipment of the calling operator network. The IBCF device of the calling operator network receives the target call request and sends the target call request to the IBCF device of the called operator network. Further, the IBCF device of the called operator network sends the target call request to the I-CSCF device of the called operator network after receiving the target call request.

Correspondingly, the I-CSCF equipment of the called operator network receives the target call request according to the sending flow.

As shown in fig. 4, the communication system further comprises an I-CSCF device 481 in the calling operator network. And under the condition that the called number is determined to belong to the calling operator network, the ENUM equipment/DNS equipment takes the address of the I-CSCF equipment of the calling operator network as next hop routing information and sends the next hop routing information to the S-CSCF equipment. And after receiving the next hop routing information, the S-CSCF equipment sends a target call request to the I-CSCF equipment of the calling operator network.

It should be noted that, in this step, the I-CSCF device of the calling operator network receives the target call request, and the subsequent process after receiving the target call request may refer to the prior art.

S209, the I-CSCF device of the called operator network determines the target short number platform device in the called operator network based on the target position identifier and the called number.

And the distance between the target short number platform equipment and the UE is less than or equal to a preset threshold value.

As a possible implementation manner, after receiving the target call request, the I-CSCF device of the called operator network parses the target call request to obtain the target location identifier and the called number. Further, the I-CSCF device of the called operator network determines the location of the UE based on the target location identity. Meanwhile, the I-CSCF equipment of the called operator network also determines a plurality of short number platform equipment based on the called number. And then, the I-CSCF equipment determines the target short number platform equipment from the plurality of short number platform equipment based on the position of the UE.

It should be noted that the preset threshold may be set in advance in the I-CSCF device of the called operator network by the operation and maintenance staff, or may be determined by the I-CSCF device of the called operator network according to a preset rule.

The specific implementation manner of this step may specifically refer to the following description of the embodiment of the present invention, and is not described herein again.

S210, the I-CSCF equipment of the called operator network sends a target call request to the target short number platform equipment.

As a possible implementation manner, the I-CSCF device of the called operator network sends a target call request to the target short number platform to establish a voice service between the target short number platform device and the UE.

In one design, to be able to determine the initial location identifier of the UE, as shown in fig. 5, S202 provided in the embodiment of the present invention specifically includes following S2021-S2023.

S2021, the routing device obtains the device type of the routing device.

As a possible implementation, the routing device obtains the device type of the routing device and the location of the routing device from a memory of the routing device.

It should be noted that the routing device includes a memory, and may be used to store the device type of the routing device.

S2022, under the condition that the device type comprises SBC/AG/MGCF/I-SBC, the routing device acquires the position of the routing device.

Illustratively, when the device type is SBC, the routing device obtains an address of an access port connected to the UE in the routing device, and uses the address of the access port as a location of the routing device.

For another example, when the device type is AG, the routing device obtains an address of an access port connected to the UE in the routing device, and uses the address of the access port as a location of the routing device.

For yet another example, when the device type is MGCF or I-SBC, the routing device obtains an address of an access port of the routing device connected to the UE and uses the address of the access port as the location of the routing device.

It will be appreciated that the address of the access port to which the routing device itself is connected to the UE may be used to reflect where the UE is located.

S2023, the routing device generates an initial position identifier based on the position of the routing device.

As a possible implementation, the routing device merges the location of the routing device, the identity of the communication protocol and the identity of the routing device into an initial location identity.

In one design, in order to generate the mid-call request, as shown in fig. 6, S203 provided in the embodiment of the present invention specifically includes the following S2031 to S2032.

S2031, the routing device generates a p-access-network-info (PANI) PANI field based on the initial location identifier.

Wherein the initial location identity is located at the beginning of the PANI field.

As a possible implementation, the routing device combines the initial location identification with preset intermediate data to generate the PANI field.

It should be noted that the start portion may be located in the header of the PANI field, and the preset intermediate data is data in the PANI field except for the header.

S2032, the routing device generates an intermediary call request based on the PANI field and the called number.

The intermediary call request includes a PANI field and a called number.

As a possible implementation, the routing device merges the PANI field with the called number to generate an intermediary call request.

In one design, in order to obtain the initial location identifier from the mid-call request, as shown in fig. 7, the above S205 provided in the embodiment of the present invention specifically includes the following S2051 to S2052.

S2051, the application server analyzes the intermediate call request to obtain the access network information PANI field in the intermediate call request.

As a possible implementation manner, the application server parses the intermediate call request according to a preset first parsing protocol to obtain the access network information PANI field in the intermediate call request.

S2052, the application server obtains the initial location identifier from the start portion of the PANI field.

As a possible implementation, the application server extracts the province label, the identification of the administrative area (YYY), the geographic location information (ZZZZ), from the access-domain field in the beginning of the PANI field, taking the extracted information as the initial location identification.

In one design, as shown in fig. 8, the embodiment of the present invention further includes the following steps S301 to S302 before the step S206.

S301, the application server determines the number type of the called number and the attribution type of the operator network based on the called number.

As a possible implementation manner, the application server identifies the called number according to a preset identification protocol to determine the number type of the called number and the home type of the operator network.

It should be noted that the preset identification protocol may be set in the application server in advance by the operation and maintenance staff, and the preset identification protocol is used to determine the number type and the operator network type.

S302, the application server judges whether the number type of the called number is a preset number type or not and whether the operator network attribution type is a non-calling operator network or not.

As a possible implementation manner, the application server first determines whether the number type of the called number is a preset short number type, and further determines whether the operator network affiliation type of the called number is a non-calling operator under the condition that the number type of the called number is determined to be the preset short number type.

In the actual application process, the determination process of the number type and the operator network affiliation type may not be sequential, or may first determine whether the operator network affiliation type of the called number is a non-calling operator, and further determine whether the number type of the called number is a preset short number type under the condition that the operator network affiliation type of the called number is determined to be the non-calling operator.

After S302, S206 provided in the embodiment of the present invention specifically includes S2061 described below.

S2061, under the condition that the number type of the called number is a preset short number type and the home type of the operator network is a non-calling operator network, the application server determines the target position identification based on the initial position identification.

It should be noted that, a specific implementation manner of this step may refer to the specific description of S206 in the embodiment of the present invention, and may also refer to the subsequent description in the embodiment of the present invention, and details are not repeated here.

In another case, when the number type of the called number is not the preset short number type, or the operator network affiliation type is the calling operator network, the implementation manner of the subsequent execution step of the application server may refer to the prior art, and is not described herein again.

In one design, in order to determine the target location identifier, S206 provided in the embodiment of the present invention specifically includes S2062 described below.

S2062, the application server inquires the target area code and/or the target inter-network area identification code of the area where the UE is located from the mapping relation based on the initial position identification.

The mapping relation comprises a corresponding relation among the position identification, the area code and the internetwork regional identification code, and the target internetwork regional identification code is used for reflecting the position of the UE in the equipment of different operator networks; the target location identity includes at least one of a target area code and a target inter-network area identity.

It should be noted that, in the mapping relationship, the location identifier, the area code, and the inter-network area identifier correspond to one another.

In one design, in order to generate the target call request, as shown in fig. 9, the communication method according to the embodiment of the present invention further includes the following step S401.

S401, the application server analyzes the called number to determine whether the called number includes an initial area code.

Wherein, the initial area code is generated by the UE in response to the dialing operation of the user.

As a possible implementation manner, the application server parses the called number according to a preset second parsing protocol to determine whether the called number includes the initial area code.

It should be noted that the second resolution protocol may be set in the application server by the operation and maintenance personnel in advance. The first resolution protocol and the second resolution protocol may be the same resolution protocol or different resolution protocols, which is not limited in this embodiment of the present invention.

After S401, S207 provided in the embodiment of the present invention specifically includes S2071 described below.

S2071, the application server generates a target call request based on the target location identifier and the called number when determining that the called number does not include the initial area code.

As a possible implementation, the application server combines the target location identifier and the called number to generate the target call request in case that it is determined that the called number does not include the initial area code.

It should be noted that the target area code may be a long distance area code in practical application, and the target inter-network area identification code may be an area location code.

Illustratively, the target call request may be represented in the following format: "< country code > + < long distance area code (without" 0 ") > + < area position code (XXX) > + < called number >" or "< country code > + < long distance area code (without" 0 ") > + < called number > + < area position code (XXX) >.

It should be noted that the area location code may be placed between the area code and the called number, or after the called number, and the length of the area location code may be preset in the application server by an operation and maintenance staff, which is not limited in the embodiment of the present invention.

In another case, if it is determined that the called number includes the initial area code, the application server compares the target area code in the target location identifier with the initial area code.

In the case where the target area code coincides with the initial area code, the application server performs subsequent processes as described above in S2071.

In the case where the target area code does not coincide with the initial area code, the application server then modifies the target call request to the form "< country code > + < initial area code (not containing" 0 ") > + < called number >".

In one design, in order to determine a target short number platform device in a called operator network, as shown in fig. 10, the above S209 provided in the embodiment of the present invention specifically includes the following S2091 to S2094.

S2091, the I-CSCF device of the called operator network determines the position of the UE based on the target position identification.

As a possible implementation manner, the I-CSCF device of the called operator network queries the location of the target location identifier from the memory based on the target location identifier, and takes the queried location of the target location identifier as the location of the UE.

It should be noted that the memory of the I-CSCF device of the called operator network stores the corresponding relationship between the target location identifier and the location information of the UE.

S2092, the I-CSCF device of the called operator network determines a plurality of short number platform devices based on the called number.

The plurality of short number platform devices are used for bearing services corresponding to the called number.

As a possible implementation manner, the I-CSCF device determines, according to the called number, a plurality of short number platform devices corresponding to the called number in the memory.

S2093, the I-CSCF device of the called operator network determines the positions of the short number platform devices.

As a possible implementation manner, the I-CSCF device of the called operator network determines the locations of the plurality of short number platform devices from the location information of the short number platform devices stored in advance.

In practical applications, in the embodiment of the present invention, S2091 may be executed first and then S2092-S2093 may be executed later, S2092-S2093 may be executed first and then S2091 may be executed later, and S2091 and S2092-S2093 may be executed simultaneously, and the execution order of the two is not limited in the embodiment of the present invention.

S2094, the I-CSCF device of the called operator network determines a target short number platform device from the plurality of short number platform devices based on the determined position and a preset threshold value.

As a possible implementation manner, the I-CSCF device of the called operator network determines, based on the determined location of the UE, the locations of the multiple short number platform devices, and a preset threshold, one short number platform device, of the multiple short number platform devices, whose distance from the UE is smaller than or equal to the preset threshold, as the target short number platform device.

In practical applications, the preset threshold may be determined by the I-CSCF device of the called operator network based on the distances between the plurality of short number platform devices and the UE. Specifically, the I-CSCF device of the called operator network may determine distances between the plurality of short number platform devices and the UE, respectively, and determine a minimum value of the obtained distances as a preset threshold value.

The embodiment of the invention provides a communication method, a communication device and communication equipment, which are applied to I-CSCF equipment of a called operator network. Since the target call request includes the target location identifier, and the target location identifier is used to reflect the location of the UE in the devices of different operator networks, the I-CSCF device may determine, based on the location of the UE, the target short number platform device whose distance from the UE is less than or equal to the preset threshold. Therefore, the UE can be accessed to the target short number platform nearby, and special service number service can be provided for the user better.

The scheme provided by the embodiment of the invention is mainly introduced from the perspective of a method. To implement the above functions, it includes hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiment of the present invention, the device may be divided into functional modules according to the method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. Optionally, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

Fig. 11 is a schematic structural diagram of an I-CSCF device according to an embodiment of the present invention. As shown in fig. 11, the I-CSCF device 50 is configured to determine a target short number platform device in the called operator network and send a target call request to the target short number platform device, for example, to perform the communication method shown in fig. 3. The I-CSCF device 50 comprises a receiving unit 501, a determining unit 502 and a sending unit 503.

A receiving unit 501, configured to receive a target call request; the target call request comprises a target position identification and a called number, and the target position identification is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of different operator networks. For example, as shown in fig. 3, the receiving unit 501 may be configured to perform S208.

A determining unit 502, configured to determine, after the receiving unit receives the target call request, a target short number platform device in the called operator network based on the target location identifier and the called number, and send the target call request to the target short number platform device, where a distance between the target short number platform device and the UE is less than or equal to a preset threshold. For example, as shown in fig. 3, the determination unit 502 may be configured to execute S209.

A sending unit 503, configured to send a target call request to a target short number platform device, where a distance between the target short number platform device and the UE is smaller than or equal to a preset threshold. For example, as shown in fig. 3, the sending unit 503 may be configured to execute S210.

Optionally, as shown in fig. 11, the determining unit 502 provided in the embodiment of the present invention is specifically configured to:

and determining the position of the UE based on the target position identification. For example, as shown in fig. 10, determination unit 502 may be configured to execute S2091.

Determining a plurality of short number platform devices based on the called number, and determining the positions of the plurality of short number platform devices; and the plurality of short number platform devices are used for bearing services corresponding to the called number. For example, as shown in FIG. 10, determination unit 502 may be used to perform S2092-S2093.

And determining a target short number platform device from the plurality of short number platform devices based on the determined position and a preset threshold value. For example, as shown in fig. 10, the determining unit 502 may be configured to perform S2094.

Fig. 12 is a schematic structural diagram of an application server device according to an embodiment of the present invention. As shown in fig. 12, the application server 60 is configured to generate and send a target call request to an I-CSCF device of the called operator network, for example, to perform the communication method shown in fig. 3. The application server device 60 includes a receiving unit 601, an acquiring unit 602, a determining unit 603, a generating unit 604, and a transmitting unit 605.

The receiving unit 601 is configured to receive an intermediate call request. For example, as shown in fig. 3, the receiving unit 601 may be configured to execute S204.

The obtaining unit 602 is configured to, in response to the mid-call request received by the receiving unit, obtain an initial location identifier and a called number from the mid-call request, where the initial location identifier is used to reflect, in a device of the calling operator network, a location where the user equipment UE corresponding to the calling number is located. For example, as shown in fig. 3, the obtaining unit 602 may be configured to execute S205.

A determining unit 603, configured to determine a target location identifier based on the initial location identifier; the target location identifier is used for reflecting the location of the user equipment UE corresponding to the calling number in the equipment of different operators. For example, as shown in fig. 3, the determining unit 603 may be configured to execute S206.

A generating unit 604, configured to generate a target call request based on the target location identifier and the called number. For example, as shown in fig. 3, the generating unit 604 may be configured to execute S207.

A sending unit 605, configured to send a target call request to an interrogating call session control function I-CSCF device of a called operator network; the target call request includes a target location identification and a called number. For example, as shown in fig. 3, the sending unit 605 may be configured to execute S208.

Optionally, as shown in fig. 12, the obtaining unit 602 provided in the embodiment of the present invention is specifically configured to:

and resolving the intermediate call request to acquire an access network information PANI field in the intermediate call request. For example, as shown in fig. 7, the obtaining unit 602 may be configured to execute S2051.

From the beginning of the PANI field, the initial location identity is obtained. For example, as shown in fig. 7, the obtaining unit 602 may be configured to perform S2052.

Optionally, as shown in fig. 12, the determining unit 602 provided in the embodiment of the present invention is further configured to determine a number type of a called number and an operator network affiliation type based on the called number. For example, as shown in fig. 8, the determining unit 602 may be configured to execute S301.

The determining unit 602 is specifically configured to determine the target location identifier based on the initial location identifier when the number type of the called number is the preset short number type and the operator network affiliation type is the non-calling operator network. For example, as shown in fig. 8, the determining unit 602 may be configured to execute S2061.

Optionally, as shown in fig. 12, the determining unit 602 provided in the embodiment of the present invention is specifically configured to:

based on the initial position identification, inquiring a target area code and/or a target internetwork area identification code of the area where the UE is located from the mapping relation; the mapping relation comprises the corresponding relation among the position identification, the area code and the internetwork area identification code, and the target internetwork area identification code is used for reflecting the position of the UE in the equipment of different operator networks; the target location identity includes at least one of a target area code and a target inter-network area identity. For example, as shown in fig. 8, the determining unit 602 may be configured to execute S2062.

Optionally, as shown in fig. 12, the determining unit 602 provided in the embodiment of the present invention is further configured to parse the called number to determine whether the called number includes an initial area code; the initial area code is generated by the UE in response to a dialing operation by the user. For example, as shown in fig. 9, the determining unit 602 may be configured to execute S401.

The generating unit 604 is specifically configured to generate the target call request based on the target location identifier and the called number when it is determined that the called number does not include the initial area code. For example, as shown in fig. 9, the generating unit 604 may be configured to execute S2071.

Fig. 13 is a schematic structural diagram of a routing device according to an embodiment of the present invention. As shown in fig. 13, the routing device 70 is configured to receive an initial call request and send an intermediate call request to an application server, for example, to perform the communication method shown in fig. 3. The routing device 70 includes a receiving unit 701, a determining unit 702, a generating unit 703, and a transmitting unit 704.

A receiving unit 701, configured to receive an initial call request sent by a user equipment UE; the initial call request includes a called number. For example, as shown in fig. 3, the receiving unit 701 may be configured to execute S201.

A determining unit 702, configured to determine an initial location identity of the UE in response to the initial call request received by the receiving unit. For example, as shown in fig. 3, the determining unit 702 may be configured to perform S202.

A generating unit 703, configured to generate an intermediate call request based on the initial location identifier and the called number; the initial location identity is used for reflecting the location of the UE in the equipment of the calling operator network, and the mid-call request comprises the initial location identity and the called number. For example, as shown in fig. 3, the generating unit 703 may be configured to execute S203.

A sending unit 704, configured to send the mid-call request to an application server of the calling operator network. For example, as shown in fig. 3, the sending unit 704 may be configured to execute S204.

Optionally, as shown in fig. 13, the determining unit 702 provided in the embodiment of the present invention is specifically configured to:

and acquiring the device type of the routing device. For example, as shown in fig. 5, the determining unit 702 may be configured to perform S2021.

And under the condition that the equipment type comprises a session border controller SBC/an access gateway AG/a media gateway control function MGCF/a network session border controller I-SBC, acquiring the position of the routing equipment, and generating an initial position identifier based on the position of the routing equipment. For example, as shown in fig. 5, the determination unit 702 may be configured to perform S2022-S2023.

Optionally, as shown in fig. 13, the generating unit 703 provided in the embodiment of the present invention is specifically configured to:

generating an access network information (PANI) field based on the initial position identification; the initial location identity is located at the beginning of the PANI field. For example, as shown in fig. 6, the generating unit 703 may be configured to execute S2031.

Generating an intermediate call request based on the PANI field and the called number; the PANI field and the called number are included in the mid-call request. For example, as shown in fig. 6, the generating unit 703 may be configured to execute S2032.

In the case that the functions of the integrated modules are implemented in the form of hardware, the embodiment of the present invention provides a possible structural schematic diagram of the I-CSCF device in the above embodiment. As shown in fig. 14, an I-CSCF device 80 is used to solve the problem that a UE cannot access nearby in a service specific telephone service, for example, to perform the communication method shown in fig. 3. The I-CSCF device 80 includes a processor 801, a memory 802 and a bus 803. The processor 801 and the memory 802 may be connected by a bus 803.

The processor 801 is a control center of the communication device, and may be a single processor or a collective term for a plurality of processing elements. For example, the processor 801 may be a Central Processing Unit (CPU), other general-purpose processors, or the like. Wherein a general purpose processor may be a microprocessor or any conventional processor or the like.

For one embodiment, processor 801 may include one or more CPUs, such as CPU 0 and CPU 1 shown in FIG. 14.

The memory 608 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

As a possible implementation, the memory 802 may exist separately from the processor 801, and the memory 802 may be connected to the processor 801 via the bus 803 for storing instructions or program code. The processor 801, when calling and executing instructions or program codes stored in the memory 802, can implement the resource isolation method provided by the embodiments of the present invention.

In another possible implementation, the memory 802 may also be integrated with the processor 801.

The bus 803 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 14, but this is not intended to represent only one bus or type of bus.

It is to be noted that the structure shown in fig. 14 does not constitute a limitation of the I-CSCF device 80. In addition to the components shown in fig. 14, the I-CSCF device 80 may include more or fewer components than shown, or combine certain components, or a different arrangement of components.

As an example, in connection with fig. 11, the functions implemented by the receiving unit 501, the determining unit 502, and the sending unit 503 in the i-CSCF device are the same as those of the processor 801 in fig. 14.

Optionally, as shown in fig. 14, the I-CSCF device 80 provided in the embodiment of the present invention may further include a communication interface 804.

A communication interface 804 for connecting with other devices through a communication network. The communication network may be an ethernet network, a radio access network, a Wireless Local Area Network (WLAN), etc. The communication interface 804 may include a receiving unit for receiving data, and a transmitting unit for transmitting data.

In one design, in the I-CSCF device provided in the embodiment of the present invention, the communication interface may be further integrated in the processor.

Fig. 15 shows another hardware configuration of the I-CSCF device in the embodiment of the present invention. As shown in fig. 15, the I-CSCF device 90 may include a processor 901 and a communication interface 902. Processor 901 is coupled to a communication interface 902.

The functions of the processor 901 may refer to the description of the processor 801 described above. The processor 901 also has a memory function, and the function of the memory 802 described above can be referred to.

The communication interface 902 is used to provide data to the processor 901. The communication interface 902 may be an internal interface of the communication device, or may be an external interface (corresponding to the communication interface 804) of the communication device.

It is noted that the structure shown in fig. 15 does not constitute a limitation of the I-CSCF device 80, and that the I-CSCF device 80 may comprise more or less components than shown, or combine some components, or a different arrangement of components, in addition to those shown in fig. 15.

Meanwhile, the schematic diagram of the hardware structure of the application server provided in the embodiment of the present invention may also refer to the description of the I-CSCF device in fig. 14 or fig. 15, which is not described herein again. Except that the application server comprises a processor for performing the steps performed by the application server in the above described embodiments.

As an example, in connection with fig. 12, the functions implemented by the receiving unit 601, the determining unit 602, the generating unit 603, and the transmitting unit 604 in the application server are the same as those of the processor of the application server.

Meanwhile, the schematic hardware structure diagram of the routing device provided in the embodiment of the present invention may also refer to the description of the I-CSCF device in fig. 14 or fig. 15, which is not described herein again. The difference is that the routing device comprises a processor for performing the steps performed by the routing device in the above described embodiments.

As an example, with reference to fig. 13, the functions implemented by the receiving unit 701, the determining unit 702, the generating unit 703, and the transmitting unit 704 in the routing device are the same as those of the processor of the routing device.

Through the above description of the embodiments, it is clear for a person skilled in the art that, for convenience and simplicity of description, only the division of the above functional units is illustrated. In practical applications, the above function allocation can be performed by different functional units according to needs, that is, the internal structure of the device is divided into different functional units to perform all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

The embodiment of the present invention further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed by a computer, the computer executes each step in the method flow shown in the above method embodiment.

Embodiments of the present invention provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the communication method of the above-described method embodiments.

The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, and a hard disk. Random Access Memory (RAM), read-Only Memory (ROM), erasable Programmable Read-Only Memory (EPROM), registers, a hard disk, optical fiber, a portable Compact disk Read-Only Memory (CD-ROM), optical storage devices, magnetic storage devices, or any other form of computer-readable storage medium known in the art, in any suitable combination of the above, or any other form of computer-readable storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). In embodiments of the invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

Since the I-CSCF device, the application server, the routing device, the computer-readable storage medium, and the computer program product in the embodiments of the present invention may be applied to the method described above, the technical effects obtained by the embodiments of the method may also refer to the embodiments of the method described above, and the embodiments of the present invention are not described herein again.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions within the technical scope of the present invention are intended to be covered by the scope of the present invention.

Claims

1. A communication method is applied to a query call session control function (I-CSCF) device of a called operator network, and is characterized by comprising the following steps:

receiving a target call request; the target call request comprises a target position identifier and a called number, and the target position identifier is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of different operator networks; the target position identification comprises a target area code and/or a target internetwork area identification code of the area where the UE is located; the UE is user equipment in a calling operator network; the calling operator network is different from the called operator network;

and determining target short number platform equipment in the called operator network based on the target position identifier and the called number, and sending the target calling request to the target short number platform equipment, wherein the distance between the target short number platform equipment and the UE is less than or equal to a preset threshold value.

2. The communication method according to claim 1, wherein the determining a target short number platform device in the called operator network based on the target location identity and the called number comprises:

determining a location of the UE based on the target location identity;

determining a plurality of short number platform devices based on the called number, and determining the positions of the plurality of short number platform devices; the short number platform devices are used for bearing services corresponding to the called number;

and determining the target short number platform equipment from the plurality of short number platform equipment based on the determined position and the preset threshold value.

3. A communication method applied to an application server of a calling operator network, comprising:

receiving an intermediate call request, and responding to the intermediate call request, acquiring an initial position identifier and a called number from the intermediate call request, wherein the initial position identifier is used for reflecting the position of User Equipment (UE) corresponding to a calling number in equipment of a calling operator network;

determining a target location identity based on the initial location identity; the target position identification is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of different operators; the target position identification comprises a target area code and/or a target internetwork area identification code of the area where the UE is located;

generating a target call request based on the target location identifier and the called number, and sending the target call request to an inquiry call session control function (I-CSCF) device of a called operator network; the target calling request comprises the target position identification and the called number; the UE is user equipment in a calling operator network; the calling operator network is different from the called operator network.

4. The communication method according to claim 3, wherein obtaining an initial location identity from the mid-call request comprises:

analyzing the intermediate call request to acquire an access network information (PANI) field in the intermediate call request;

and acquiring the initial position identification from the initial part of the PANI field.

5. The communication method of claim 3, wherein the method further comprises:

determining the number type of the called number and the operator network attribution type based on the called number;

the determining the target location identity based on the initial location identity comprises:

and under the condition that the number type of the called number is a preset short number type and the operator network attribution type is a non-calling operator network, determining the target position identification based on the initial position identification.

6. The communication method according to any of claims 3-5, wherein said determining a target location identity based on said initial location identity comprises:

based on the initial position identification, inquiring a target area code and/or a target inter-network area identification code of an area where the UE is located from a mapping relation; the mapping relation comprises a corresponding relation among a position identifier, an area code and an internetwork area identification code, and the target internetwork area identification code is used for reflecting the position of the UE in equipment of different operator networks; the target location identity comprises at least one of the target area code and the target inter-network area identification code.

7. The communication method of claim 6, wherein the method further comprises:

analyzing the called number to determine whether the called number comprises an initial area number; the initial area code is generated by the UE in response to the dialing operation of a user;

generating a target call request based on the target location identification and the called number, comprising:

generating the target call request based on the target location identity and the called number if it is determined that the called number does not include the initial area code.

8. A communication method applied to a routing device is characterized by comprising the following steps:

receiving an initial call request sent by User Equipment (UE); the initial call request comprises a called number;

responding to the initial call request, determining an initial position identifier of the UE, and generating an intermediate call request based on the initial position identifier and the called number; the initial position mark is used for reflecting the position of the UE in the equipment of a calling operator network, and the intermediate call request comprises the initial position mark and the called number;

sending the mid-call request to an application server of a calling operator network; the intermediate call request is used for indicating the server to acquire an initial position identifier and a called number from the intermediate call request and determining a target position identifier based on the initial position identifier; the initial position identification is used for reflecting the position of User Equipment (UE) corresponding to a calling number in the equipment of the calling operator network; the target position identification is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of different operators; the target location identifier includes a target area code and/or a target inter-network area identifier of an area where the UE is located.

9. The communication method according to claim 8, wherein the determining the initial location identity of the UE comprises:

acquiring the equipment type of the routing equipment;

and under the condition that the equipment type comprises a Session Border Controller (SBC)/an Access Gateway (AG)/a Media Gateway Control Function (MGCF)/a network session border controller (I-SBC), acquiring the position of the routing equipment, and generating the initial position identifier based on the position of the routing equipment.

10. The communication method according to claim 8, wherein the generating an intermediary call request based on the initial location identity and the called number comprises:

generating an access network information (PANI) field based on the initial position identification; the initial position identification is positioned at the initial part of the PANI field;

generating the mid-call request based on the PANI field and the called number; the intermediate call request includes the PANI field and the called number.

11. An inquiring call session control function I-CSCF device is characterized in that the I-CSCF device is applied to a called operator network and comprises a receiving unit, a determining unit and a sending unit;

the receiving unit is used for receiving a target call request; the target calling request comprises a target position identifier and a called number, and the target position identifier is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of different operator networks; the target location identification comprises a target area code and/or a target internetwork area identification code of the area where the UE is located; the UE is user equipment in a calling operator network; the calling operator network is different from the called operator network;

the determining unit is configured to determine, after the receiving unit receives the target call request, a target short number platform device in the called operator network based on the target location identifier and the called number;

and the sending unit is used for sending the target call request to the target short number platform equipment, and the distance between the target short number platform equipment and the UE is less than or equal to a preset threshold value.

12. The I-CSCF device of claim 11, wherein the determining unit is specifically configured to:

determining the location of the UE based on the target location identity;

13. The application server equipment is characterized by being applied to a calling operator network and comprising a receiving unit, an acquiring unit, a determining unit, a generating unit and a sending unit;

the receiving unit is used for receiving the intermediate call request;

the obtaining unit is configured to obtain, in response to the mid-call request received by the receiving unit, an initial location identifier and a called number from the mid-call request, where the initial location identifier is used to reflect, in the device of the calling operator network, a location where a user equipment UE corresponding to a calling number is located;

the determining unit is used for determining a target position identifier based on the initial position identifier; the target position identification is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of different operators; the target location identification comprises a target area code and/or a target internetwork area identification code of the area where the UE is located;

the generating unit is used for generating a target calling request based on the target position identification and the called number;

the sending unit is used for sending the target call request to an inquiry call session control function (I-CSCF) device of a called operator network; the target call request comprises the target position identification and the called number; the UE is user equipment in a calling operator network; the calling operator network is different from the called operator network.

14. The application server device of claim 13, wherein the obtaining unit is specifically configured to:

15. The application server device of claim 13, wherein the determining unit is further configured to determine a number type of the called number and an operator network affiliation type based on the called number;

the determining unit is specifically configured to determine the target location identifier based on the initial location identifier when the number type of the called number is a preset short number type and the operator network affiliation type is a non-calling operator network.

16. The application server device according to any one of claims 13 to 15, wherein the determining unit is specifically configured to query, based on the initial location identifier, a target area code and/or a target inter-network area identity of an area where the UE is located from a mapping relationship; the mapping relation comprises a corresponding relation among a position identifier, an area code and an internetwork regional identification code, and the target internetwork regional identification code is used for reflecting the position of the UE in equipment of different operator networks; the target location identity includes at least one of the target area code and the target inter-network area identity.

17. The application server device of claim 16, wherein the determining unit is further configured to parse the called number to determine whether an initial area code is included in the called number; the initial area code is generated by the UE in response to the dialing operation of the user;

the generating unit is specifically configured to generate the target call request based on the target location identifier and the called number when it is determined that the called number does not include the initial area code.

18. A routing device is characterized by comprising a receiving unit, a determining unit, a generating unit and a sending unit;

the receiving unit is configured to receive an initial call request sent by user equipment UE; the initial call request comprises a called number;

the determining unit is configured to determine an initial location identifier of the UE in response to the initial call request received by the receiving unit;

the generating unit is used for generating an intermediate call request based on the initial position identifier and the called number; the initial position mark is used for reflecting the position of the UE in the equipment of a calling operator network, and the intermediate call request comprises the initial position mark and the called number;

the sending unit is used for sending the intermediate call request to an application server of a calling operator network; the intermediate call request is used for indicating the server to acquire an initial position identifier and a called number from the intermediate call request and determining a target position identifier based on the initial position identifier; the initial position identification is used for reflecting the position of User Equipment (UE) corresponding to a calling number in the equipment of the calling operator network; the target position identification is used for reflecting the position of User Equipment (UE) corresponding to the calling number in equipment of different operators; the target location identifier includes a target area code and/or a target inter-network area identifier of an area where the UE is located.

19. The routing device according to claim 18, wherein the determining unit is specifically configured to obtain a device type of the routing device;

20. The routing device according to claim 18, wherein the generating unit is specifically configured to:

21. A computer-readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computer, cause the computer to perform the communication method of any of claims 1-2, or claims 3-7, or claims 8-10.

22. An interrogating call session control function, I-CSCF, device, for use in a called operator network, comprising: a processor and a memory; wherein the memory is configured to store one or more programs, the one or more programs including computer-executable instructions that, when executed by the I-CSCF device, are executed by the processor to cause the I-CSCF device to perform the communication method of any of claims 1-2.

23. An application server device, comprising: a processor and a memory; wherein the memory is configured to store one or more programs, the one or more programs comprising computer-executable instructions that, when executed by the application server device, cause the application server device to perform the communication method of any of claims 3-7 by executing the computer-executable instructions stored by the memory.

24. A routing device, comprising: a processor and a memory; wherein the memory is configured to store one or more programs, the one or more programs including computer-executable instructions, which when executed by the routing device, are executed by the processor to cause the routing device to perform the communication method of any of claims 8-10.

25. A communication system is characterized by comprising a routing device, an application server device and an inquiry call session control function (I-CSCF) device, wherein the application server device is respectively connected with the routing device and the I-CSCF device; the routing device is configured to perform the communication method of any one of claims 8-10, the application server device is configured to perform the communication method of any one of claims 3-7, and the I-CSCF device is configured to perform the communication method of any one of claims 1-2.