CN115361362A

CN115361362A - IMS-based coal mine call system and method

Info

Publication number: CN115361362A
Application number: CN202211283389.6A
Authority: CN
Inventors: 李秀文; 马启龙; 韩利彬; 刘仑
Original assignee: Beijing Diwei Shuangxing Communication Technology Co ltd
Current assignee: Beijing Diwei Shuangxing Communication Technology Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2022-11-18

Abstract

The invention provides a coal mine call system and method based on IMS, it transfers call message, answer message and call data between user terminal and dispatching module through IMS module of core network, do not need to develop VoIP APP on the user terminal, the user terminal uses dialing call and incoming call answer interface that oneself possesses to finish with the dispatching desk or IP telephone intercommunication under the dispatching module, have lower time delay of putting through, higher conversation quality, more extensive and ability of compatible different user terminals conveniently.

Description

IMS-based coal mine call system and method

Technical Field

The invention belongs to the technical field of communication, and particularly relates to a coal mine communication system and method based on an IMS (IP multimedia subsystem).

Background

IMS (IP Multimedia Subsystem) is an IP Multimedia system, which is a core technology of a network.

LTE (Long Term Evolution) is a Long Term Evolution of The UMTS (Universal Mobile Telecommunications System) technical standard established by The 3GPP (The 3rd Generation Partnership Project) organization, formally established and initiated at The 3GPP multi-toronto conference in 2004, 12 months.

VOLTE (Voice over Long-terminal Evolution) is a high-speed wireless communication standard facing user terminals. Under the condition that the VoLTE scheme is increasingly perfected and the coal mine ground and the underground 4G/5G network are fully covered, the requirement that a user accesses a coal mine scheduling system is generated.

The method for accessing the dispatching system by the user terminal is also very numerous, most commonly, APP application is developed on the user terminal to enable the user terminal to have the capability of VoIP, call messages, response messages and conversation data are interacted between a dispatching desk or an IP phone and the user terminal, but since VoIP is a best-effort communication technology, various problems of call failure, word loss, disconnection and the like exist in use, types, configurations, manufacturers and systems of the user terminal are different, the APP and the user terminal system need to be subjected to bottom layer fusion development, the APP is ensured to be in a keep-alive state all the time, users cannot freely select, and users do not recognize the VoIP mode.

Disclosure of Invention

Based on the above, aiming at the technical problems, the IMS-based coal mine call system and method which are low in time delay, high in stability, good in call experience and wide in applicability are provided.

The technical scheme adopted by the invention is as follows:

as a first aspect of the present invention, an IMS-based coal mine call system is provided, which includes a scheduling module, a user terminal, and a core network IMS module:

the dispatching module is used for sending message data of the dispatching end equipment to a core network IMS module, or sending the message data of the core network IMS module to the dispatching end equipment;

the user terminal is used for sending message data to the core network IMS module or receiving message data from the core network IMS module;

the core network IMS module is used for transferring the message data between the user terminal and the scheduling module.

As a second aspect of the present invention, there is provided an IMS-based coal mine call method, including:

sending message data of a dispatching end device to a core network IMS module, or sending the message data of the core network IMS module to the dispatching end device;

sending message data to the core network IMS module, or receiving message data from the core network IMS module;

and transferring the message data between the user terminal and the scheduling module.

The invention transfers the call message, the response message and the call data between the user terminal and the dispatching module through the IMS module of the core network, does not need to develop VoIP APP on the user terminal, and the user terminal can complete the intercommunication with the dispatching desk or the IP phone under the dispatching module by using the dialing call and incoming call receiving interface of the user terminal, thereby having the capabilities of lower connection time delay, higher call quality and wider and more convenient compatibility with different user terminals.

Drawings

The invention is described in detail below with reference to the following figures and detailed description:

fig. 1 is a schematic structural diagram of an IMS-based coal mine call system according to the present invention;

fig. 2 is a schematic diagram of a core network IMS of the present invention;

fig. 3 is a schematic structural diagram of an IMS module of a core network according to the present invention;

FIG. 4 is a schematic flow chart of the call dispatch table of the present invention;

fig. 5 is a schematic flow chart of the mobile phone participating in the break-in service according to the present invention.

Detailed Description

The embodiments of the present invention will be described below with reference to the drawings. It should be noted that the embodiments mentioned in the present description are not exhaustive and do not represent the only embodiments of the present invention. The following examples are given for the purpose of clearly illustrating the inventive contents of the present patent application and are not intended to limit the embodiments thereof. It will be apparent to those skilled in the art that various changes and modifications can be made in the embodiment without departing from the spirit and scope of the invention, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.

As shown in fig. 1, an embodiment of the present specification provides an IMS-based coal mine call system, which includes a scheduling module 110, a user terminal 120, and a core network IMS module 130.

The scheduling module 110 is configured to send the message data of the scheduling end device to the core network IMS module 130, or send the message data of the core network IMS module 130 to the scheduling end device.

The user terminal 120 is configured to send message data to the core network IMS module 130, or receive message data from the core network IMS module 130.

The core network IMS module 130 is configured to relay message data between the user terminal 120 and the scheduling module 110.

The dispatching end device is a dispatching desk 141 or an IP phone 142, and the message data includes: SIP messages, media RTP data.

Through the transfer of the call message, the response message and the call data between the user terminal 120 and the scheduling module 110 in the core network IMS module 130, the user terminal can complete the intercommunication with the scheduling station or the IP phone under the scheduling module by using the dial-up call and incoming call receiving interface of the user terminal without developing VoIP APP on the user terminal, and has the capabilities of lower connection delay, higher call quality, and wider and more convenient compatibility with different user terminals.

Taking the user terminal 120 as an example of initiating a call, the core network IMS module 130 forwards a call message passing through its P-CSCF network element to the scheduling module 110, and then the scheduling module 110 calls the scheduling station 141 or the IP phone 142 therebelow, after the scheduling station 141 or the IP phone 142 answers, the scheduling module 110 forwards an answer message to an S-CSCF network element of the core network IMS module 130 to complete an audio and video call signaling, so as to prompt the user terminal 120 to talk with the scheduling station 141 or the IP phone 142. The session data is sent, received, and negotiated by the session border controller SBC of the core network IMS module 130 and the scheduling module 110, and the process is the same as the VOIP call, which is not described herein again.

Of course, the dispatch station 141 or the IP phone 142 may also initiate a call, the call message is sent to the corresponding user terminal 120 through the dispatch module 110 and the core network IMS module 130, the user terminal 150 answers the call, and the answer message is forwarded to the dispatch module 110 through the core network IMS module 130.

The user terminal 120 has dial-up call and incoming call answering functions, and can perform a voice video call, such as a 5G mobile phone, where the call message and the response message are both SIP messages, and the call data is media RTP data.

Taking a mobile phone call dispatch station as an example, as shown in fig. 4, the detailed flow is as follows:

after a user dials the number of the dispatching desk through the mobile phone:

(1-2): the mobile phone initiates a call to the scheduling module without authentication information.

(3-4): the scheduling module initiates a require authentication message (407 message) to the handset.

(5-6): the mobile phone carries the authentication information and initiates a call to the dispatching module again.

(7): the dispatch module forwards the call to the called dispatch station.

(8-10): the mobile phone calls the dispatching desk to ring (8-10).

(11-15): the dispatching desk is off-hook.

The mobile phone receives the dispatching station off-hook request and replies an ACK confirmation.

As shown in fig. 3, the core network IMS module 130 includes a registration request receiving unit, an authentication unit, an account opening unit, a forwarding unit, a first obtaining unit, a first calling unit, a second obtaining unit, a second calling unit, a query unit, and a return unit.

When the user terminal 120 sends a registration request to the core network IMS module 130:

1. the receive registration request unit receives a registration request.

2. And the authentication unit authenticates the registration request according to the preset condition.

3. The account opening unit opens the account of the corresponding user terminal when the authentication result is successful, and returns a registration success message; and when the authentication result is failure, receiving the registration request until the receiving is finished.

4. The forwarding unit forwards the registration success message to the corresponding user terminal 120.

When the user terminal 120 calls the scheduling terminal equipment:

1. the first obtaining unit obtains the network element address of the called dispatching end device:

as shown in fig. 2, a call initiated by the user terminal 120 is forwarded to a session border controller SBC of the core network IMS through a P-CSCF network element of the coal mine private network IMS, a local I-CSCF network element is selected by the session border controller SBC according to local data configuration and is accessed to the coal mine private network IMS, for an incoming call on the called side, an LIR query is initiated by the I-CSCF network element using a called number, and an S-CSCF network element address where the called dispatching desk 141 or the IP phone 142 is located is obtained.

2. The first calling unit calls the dispatching terminal equipment according to the network element address:

the call is initiated to the S-CSCF network element address where the called dispatcher 141 or the IP phone 142 is located through the I-CSCF network element, the called dispatcher 141 or the IP phone 142 receives the call, starts ringing and answers, and the user terminal 120 completes the call setup process with the dispatcher 141 or the IP phone 142.

When the dispatching end device calls the user terminal 120:

1. the second obtaining unit obtains the network element address of the called user terminal 120:

the user dials the private network number of the coal mine (the private network numbers are all VoLTE users and open an account in the public network) through the dispatching desk 141 or the IP phone 142, and the dispatching desk 141 or the IP phone 142 initiates a call through the dispatching module 110. The second obtaining unit accesses the call initiated by the scheduling module 110 to a session border controller SBC of the core network IMS through the coal mine private network IMS, transfers the message to an I-CSCF network element of the core network IMS through the session border controller SBC, and initiates an LIR query by using the called number through the I-CSCF network element to obtain an S-CSCF network element address where the called user terminal is located, that is, an address of the called S-CSCF network element.

2. The second calling unit calls the user terminal 120 according to the network element address:

and routing the called number to a called S-CSCF network element through an I-CSCF network element of the core network IMS according to the query result, and triggering the incoming call incoming service through the called S-CSCF network element.

3. The inquiring unit inquires the routing address according to the number of the called user terminal 120:

firstly, a route host address is obtained through the query of an HSS server of a core network IMS, and then a route IP address is obtained through the query of a DNS.

4. The return unit returns the calling result to the dispatching end equipment according to the routing address:

the call is routed to a session border controller SBC of the core network IMS through the called S-CSCF network element according to the routing address, routed to the coal mine private network IMS through the session border controller SBC according to the office data configuration, and returned to the dispatch table 141 or the IP phone 142 through the dispatch module 110 by the coal mine private network IMS, thereby completing the call process.

In one embodiment, the core network is a 5G core network, and the coal mine private network is a 5G coal mine private network.

In addition, the system of the invention also supports the dispatching functions of forced insertion, forced release, monitoring, broadcasting, multicasting, switching, alternate connection and the like.

As shown in fig. 5, taking the break-in service as an example, the flow of the mobile phone participating in the break-in service is as follows:

(1-2): cell phone a and cell phone B are in conversation.

(3): and the dispatching desk performs the break-in operation and sends break-in INVITE carrying callID of A or B.

(4): after the call between the mobile phone A and the mobile phone B is obtained by the scheduling module according to the callID, a sound mixing channel is created and returned to the scheduling station through a message (200 OK).

At this time, the dispatching desk, the mobile phone A and the mobile phone B carry out sound mixing conversation in the sound mixing channel.

Based on the same concept, the embodiment of the present specification further provides a coal mine call method based on the IMS, and the method includes:

as shown in fig. 1, the scheduling module 110 sends the message data of the scheduling end device to the core network IMS module 130, or sends the message data of the core network IMS module 130 to the scheduling end device.

The message data is sent by the user terminal 120 to the core network IMS module 130 or received from the core network IMS module 130.

Message data between the user terminal 120 and the scheduling module 110 is relayed by the core network IMS module 130.

Taking the user terminal 120 initiating a call as an example, the core network IMS module 130 forwards a call message passing through its P-CSCF network element to the scheduling module 110, and then the scheduling module 110 calls the scheduling station 141 or the IP phone 142 therebelow, and after the scheduling station 141 or the IP phone 142 answers, the scheduling module 110 forwards the answer message to the S-CSCF network element of the core network IMS module 130 to complete the signaling of the audio and video call, so as to prompt the user terminal 120 to have a call with the scheduling station 141 or the IP phone 142. The session data is received, transmitted, and negotiated between the session border controller SBC of the core network IMS module 130 and the scheduling module 110, and the process is the same as the VOIP call, which is not described herein again.

Of course, the dispatch 141 or the IP phone 142 may initiate a call, a call message is sent to the corresponding user terminal 120 through the dispatch module 110 and the core network IMS module 130, the user terminal 150 answers the call, and the answer message is forwarded to the dispatch module 110 through the core network IMS module 130.

Taking the mobile phone call dispatch station as an example, as shown in fig. 4, the detailed flow is as follows:

after a user dials the number of the dispatching desk through the mobile phone:

(1-2): the mobile phone initiates a call to the dispatching module without authentication information.

(5-6): the mobile phone carries the authentication information and initiates the call to the dispatching module again.

(7): the dispatch module forwards the call to the called dispatch station.

(8-10): the mobile phone calls the dispatching desk to ring (8-10).

(11-15): the dispatching desk is off-hook.

When the user terminal 120 sends a registration request to the core network IMS module 130, the following registration steps are performed by the core network IMS module 130:

1. a registration request is received.

2. And authenticating the registration request according to a preset condition.

3. When the authentication result is successful, opening an account of the corresponding user terminal, and returning a registration success message; and when the authentication result is failure, receiving the registration request until the receiving is finished.

4. The registration success message is forwarded to the corresponding ue 120.

When the user terminal 120 calls the dispatcher terminal device, the core network IMS module 130 performs a first call step as follows:

1. acquiring the network element address of the called scheduling terminal equipment:

the call initiated by the user terminal 120 is forwarded to a session border controller SBC of the core network IMS through a P-CSCF network element of the coal mine private network IMS, a local I-CSCF network element is selected by the session border controller SBC according to local data configuration to access to the coal mine private network IMS, for the incoming call of the called side, LIR query is initiated by using the called number through the I-CSCF network element, and the S-CSCF network element address where the called dispatching desk 141 or the IP phone 142 is located is known.

2. Calling the dispatching terminal equipment according to the network element address:

When the dispatching end device calls the user terminal 120, the core network IMS module 130 performs the following second calling step:

1. obtaining the network element address of the called user terminal 120:

the user dials the private network number of the coal mine (the private network numbers are all VoLTE users and open an account in the public network) through the dispatching desk 141 or the IP phone 142, and the dispatching desk 141 or the IP phone 142 initiates a call through the dispatching module 110.

The call initiated by the scheduling module 110 is accessed to a session border controller SBC of the core network IMS through the coal mine private network IMS, a message is transferred to an I-CSCF network element of the core network IMS through the session border controller SBC, and LIR query is initiated by using a called number through the I-CSCF network element to obtain an S-CSCF network element address where a called user terminal is located, that is, an address of the called S-CSCF network element.

2. Calling the user terminal 120 according to the network element address:

3. The routing address is queried according to the number of the called user terminal 120:

4. And returning a calling result to the dispatching end equipment according to the routing address:

the call is routed to a session border controller SBC of the core network IMS through the called S-CSCF network element according to the routing address, routed to the coal mine private network IMS through the session border controller SBC according to the office data configuration, and returned to the dispatching station 141 or the IP phone 142 through the dispatching module 110 by the coal mine private network IMS, thereby completing the call process.

However, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present invention, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.

Claims

1. A coal mine communication system based on IMS is characterized by comprising a scheduling module, a user terminal and a core network IMS module:

2. The IMS-based coal mine call system according to claim 1, wherein when the user terminal sends a registration request to the core network IMS module, the core network IMS module includes:

a registration request receiving unit, configured to receive the registration request;

the authentication unit is used for authenticating the registration request according to a preset condition;

the account opening unit is used for opening an account of the corresponding user terminal and returning a registration success message when the authentication result is successful; when the authentication result is failure, receiving the registration request until the receiving is completed;

and the forwarding unit is used for forwarding the registration success message to the corresponding user terminal.

3. The IMS-based coal mine call system according to claim 1, wherein the core network IMS module further includes, when the user terminal calls the dispatcher terminal device:

a first obtaining unit, configured to obtain a network element address of the called scheduling end device;

and the first calling unit is used for calling the dispatching end equipment according to the network element address.

4. The IMS-based coal mine call system according to claim 1, wherein when the dispatcher terminal device calls the user terminal, the core network IMS module further includes: a second obtaining unit, configured to obtain a network element address of the called user terminal;

a second calling unit, configured to call the user terminal according to the network element address;

the inquiring unit is used for inquiring a routing address according to the number of the called user terminal;

and the return unit is used for returning a calling result to the dispatching end equipment according to the routing address.

5. The IMS-based coal mine call system according to claim 1, wherein the message data includes: SIP messages, media RTP data.

6. A coal mine call method based on IMS is characterized by comprising the following steps:

sending message data of a dispatching terminal device to a core network IMS module, or sending the message data of the core network IMS module to the dispatching terminal device;

7. The IMS-based coal mine call method according to claim 6, further comprising performing, when the user terminal sends a registration request to the core network IMS module, the following registration steps:

receiving the registration request;

authenticating the registration request according to a preset condition;

when the authentication result is successful, opening an account of the corresponding user terminal, and returning a registration success message; when the authentication result is failure, receiving the registration request until the receiving is completed;

and forwarding the registration success message to a corresponding user terminal.

8. The IMS-based coal mine call method according to claim 6, further comprising performing a first call step, when the user terminal calls the dispatcher terminal device, of:

acquiring a network element address of the called scheduling terminal equipment;

and calling the dispatching end equipment according to the network element address.

9. The IMS-based coal mine call method according to claim 6, further comprising, when the dispatcher terminal device calls the user terminal, performing a second call step of:

acquiring a network element address of the called user terminal;

calling the user terminal according to the network element address;

inquiring a routing address according to the number of the called user terminal;

and returning a calling result to the dispatching end equipment according to the routing address.

10. An IMS-based coal mine call method as claimed in claim 6, wherein the message data is SIP message, media RTP data.