A locomotive CIR device and dispatching communication method supporting 5G audio and video dispatching communication

Abstract

The present application relates to a kind of locomotive CIR equipment and dispatching communication method of supporting 5G audio and video scheduling communication, wherein CIR equipment includes CIR host computer with main control unit and operation display terminal MMIs, CIR host computer includes backplane, main control unit includes bottom plate and core board, core board is installed on bottom plate, bottom plate is connected with backplane by socket, first Ethernet port and second Ethernet port are provided on bottom plate, operation display terminal MMIs include first operation display terminal and second operation display terminal, first Ethernet port accesses first operation display terminal, second Ethernet port accesses 5G communication module, and second operation display terminal is connected with first operation display terminal. Compared with prior art, the present application has the advantages of providing high-quality audio and video communication for locomotive, low modification cost, convenience, strong versatility and the like.

Description

Technical Field

[0001] This invention relates to the field of locomotive wireless communication technology, and in particular to a locomotive CIR device and scheduling communication method that supports 5G audio and video scheduling communication. Background Technology

[0002] The GSM-R system for railway mobile communication is a dedicated communication system developed based on the public GSM network. It features typical characteristics of digital narrowband wireless communication and is primarily used for voice and low-speed data communication. As 5G technology gradually integrates with vertical industries, the railway industry is actively exploring and experimenting with its applications in railway communications. Dispatch communication, a key business system for daily railway operation and management, will also be developed and applied in the railway 5G private network. In addition to supporting the existing voice dispatch communication functions of GSM-R, railway 5G dispatch communication will also see the emergence of new services such as video dispatch communication.

[0003] Because 5G audio and video services place high demands on the bus bandwidth and processing capabilities of CIR devices, existing vehicle integrated wireless communication equipment (CIR) is designed using a more than ten-year-old approach based on a microcontroller and serial bus. This makes it impossible to support 5G audio and video scheduling communication functions simply by upgrading the software. A completely new design for the CIR device would be incompatible with existing online CIR equipment, ultimately requiring the replacement of the entire existing CIR system and failing to protect the investment in existing CIR equipment. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a locomotive CIR device and scheduling communication method that supports 5G audio and video scheduling communication, provides high-quality audio and video communication for locomotives, has low modification costs, is convenient and fast, and has strong versatility.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A locomotive CIR device supporting 5G audio and video dispatch communication is disclosed. The CIR device includes a CIR host with a main control unit and an operation display terminal (MMI). The CIR host includes a backplane, and the main control unit includes a base plate and a core board. The core board is mounted on the base plate. The base plate is connected to the backplane via a socket. The base plate has a first Ethernet port and a second Ethernet port. The operation display terminal (MMI) includes a first operation display terminal and a second operation display terminal. The first Ethernet port is connected to the first operation display terminal, and the second Ethernet port is connected to a 5G communication module. The second operation display terminal is cascaded with the first operation display terminal.

[0007] Preferably, the CIR main unit further includes a chassis, an A sub-rack, and a B sub-rack; the A sub-rack and the B sub-rack are respectively mounted on the chassis; the main control unit is mounted on the A sub-rack.

[0008] The A subframe is equipped with a power supply unit, a high-speed data unit, a GSM-R voice unit, a GSM-R data unit, a satellite positioning unit, and a recording and switching unit, all of which are connected to the main control unit.

[0009] The B subframe is equipped with a 450MHz locomotive radio unit, an LBJ alarm unit, and an interface unit; the 450MHz locomotive radio unit and the LBJ alarm unit communicate with the main control unit through the interface unit and the backplane.

[0010] Preferably, the A subframe is provided with a slot; the main control unit is plugged into and connected to the A subframe via the slot.

[0011] Preferably, the core board includes:

[0012] The core board's CIR internal communication protocol processing module is used to process audio and video scheduling operation signaling information, realize the internal protocol processing of CIR audio and video scheduling services, and convert the internal protocol into 5G audio and video scheduling control operations to realize communication with the 5G audio and video scheduling communication protocol processing module.

[0013] The core board's 5G audio and video scheduling communication protocol processing module is used to communicate with the CIR's internal communication protocol processing module and to interact with the 5G communication module via signaling.

[0014] The core board RTP protocol processing module is used to interact with the first operation display terminal for audio RTP streams, and at the same time, to interact with the sound card driver of the main control unit for the corresponding audio RTP streams.

[0015] Preferably, the first operation display terminal includes:

[0016] The operation display terminal human-computer interaction module is used to realize the human-computer interaction of MMI;

[0017] The operation display terminal CIR internal communication protocol processing module is used to interact with the main control unit for 5G audio and video scheduling service signaling and existing control flow within the CIR.

[0018] The operation display terminal AMR-WB codec module is used to convert audio streams between PCM encoding and AMR-WB encoding.

[0019] The operation display terminal H.264 encoding / decoding module is used to perform H.264 encoding / decoding operations on the video stream;

[0020] The operation display terminal RTP protocol processing module is used to package audio and video streams and extract audio and video streams from RTP packets.

[0021] A 5G audio and video scheduling communication method for locomotive CIR equipment as described in any one of the above claims, the 5G audio and video scheduling communication method comprising:

[0022] The 5G signaling flow communication sub-method is used to realize the interaction of signaling flow among the MMI, CIR host and 5G communication module;

[0023] A 5G media stream communication sub-method is used to realize the interaction of media streams among the MMI, CIR host and 5G communication module;

[0024] Existing control flow communication sub-methods are used to implement the interaction of existing control flows between the MMI and CIR host;

[0025] An existing audio stream communication sub-method is used to enable the interaction of existing audio streams between the MMI and CIR hosts.

[0026] Preferably, the 5G signaling stream communication sub-method specifically includes:

[0027] The human-machine interaction module of the operation display terminal receives instructions from the input device, generates 5G audio and video scheduling service operation instructions, and transmits the relevant operation instructions to the CIR internal communication protocol processing module of the operation display terminal; the CIR internal communication protocol processing module of the operation display terminal converts the corresponding 5G audio and video scheduling service operation instructions into internal communication protocol information between the MMI and the CIR host, and sends it to the main control unit through the first external network port;

[0028] The CIR internal communication protocol processing module on the core board within the main control unit processes 5G audio and video scheduling service operation commands, implements CIR audio and video scheduling service internal protocol processing, converts the internal protocol into 5G audio and video scheduling control operations, and sends them to the core board 5G audio and video scheduling communication protocol processing module. The core board 5G audio and video scheduling communication protocol processing module communicates with the 5G communication module through the second Ethernet port, and realizes signaling interaction with the 5G audio and video scheduling service server through the 5G network.

[0029] Preferably, the 5G media stream communication sub-method specifically comprises:

[0030] The main control unit sends the media stream to the 5G communication module in the following way:

[0031] The first operation display terminal sends an RTP packet containing AMR-WB voice to the main control unit. The core board's 5G audio and video scheduling communication protocol processing module forwards the corresponding voice RTP packet to a specific UDP port of the second Ethernet port, thereby sending it to the 5G network and server through the 5G communication module. The first operation display terminal sends an RTP packet containing H.264 video to the main control unit. The core board's 5G audio and video scheduling communication protocol processing module sends the corresponding video RTP packet to the 5G communication module through a specific UDP port of the second Ethernet port.

[0032] The main control unit receives the media stream from the 5G communication module as follows:

[0033] The 5G communication module sends voice RTP packets to a specific UDP port of the second Ethernet port. The core board's 5G audio and video scheduling communication protocol processing module forwards the corresponding voice RTP packets to a specific UDP port of the first Ethernet port, thereby forwarding the audio stream to the first operation display terminal. The 5G communication module sends video RTP packets to a specific UDP port of the second Ethernet port. The core board's 5G audio and video scheduling communication protocol processing module forwards the corresponding video RTP packets to a specific UDP port of the first Ethernet port, thereby forwarding the audio stream to the first operation display terminal.

[0034] The method by which the first operation display terminal sends the media stream to the main control unit is as follows:

[0035] The first operational display terminal's audio driver acquires and performs analog-to-digital conversion from the corresponding audio channel to form a PCM digital audio stream. The operational display terminal's AMR-WB encoding / decoding module converts the audio stream from PCM encoding to AMR-WB encoding. The operational display terminal's RTP protocol processing module encapsulates the AMR-WB stream into RTP packets and sends the audio RTP packets to the main control unit through a specific UDP port provided by the first Ethernet port. The first operational display terminal also acquires video through its video driver to form a digital video stream. The operational display terminal's H.264 encoding / decoding module encapsulates the video stream into H.264 format. The operational display terminal's RTP protocol processing module encapsulates the H.264 stream into RTP packets and sends the video RTP packets to the main control unit through a specific UDP port provided by the first Ethernet port.

[0036] The method by which the first operation display terminal receives the media stream from the main control unit is as follows:

[0037] The RTP protocol processing module of the first operating display terminal receives voice RTP packets from a specific UDP port of the first Ethernet port, extracts the AMR-WB voice data stream, and forwards the voice data to the AMR-WB codec module. The AMR-WB codec module decodes the voice data, forms a PCM data stream, and outputs it to the audio driver to complete sound playback. The same module also receives video RTP packets from a specific UDP port of the first Ethernet port, extracts the H.264 video stream, and forwards the H.264 video data to the H.264 codec module. The H.264 codec module decodes the video data, forms a video data stream, and outputs it to the display driver to complete video playback.

[0038] Preferably, the existing control flow communication sub-method is specifically as follows:

[0039] The CIR internal communication protocol processing module of the core board interacts with the first operation display terminal through a specific UDP port of the first Ethernet port to access the existing control flow within the CIR. At the same time, the main control unit 91 communicates the corresponding control commands with other units of the CIR host through the interface of the backplane to achieve compatibility between the main control unit and the CIR device.

[0040] The CIR internal communication protocol processing module of the operation display terminal interacts with the main control unit through a specific UDP port of the first Ethernet port to access the existing control flow within the CIR, and realizes human-machine interaction through the human-machine interaction module of the operation display terminal, thereby achieving compatibility between the first operation display terminal and the CIR device.

[0041] Preferably, the existing audio stream communication sub-method specifically includes:

[0042] The core board RTP protocol processing module interacts with the existing audio RTP stream inside the CIR through a specific UDP port of the first Ethernet port. At the same time, it interacts with the sound card driver of the main control unit to realize the analog-to-digital / digital-to-analog conversion of audio. Then, it communicates with other units of the CIR host through the interface of the backplane to realize the compatibility between the main control unit and the CIR device.

[0043] The RTP protocol processing module of the operation display terminal interacts with the main control unit through a specific UDP port of the first Ethernet port to exchange the existing audio stream inside the CIR, complete the RTP encapsulation or decapsulation of the digital audio stream, and at the same time interacts with the sound card driver of the first operation display terminal to exchange the digital audio stream, complete the audio acquisition and playback, and realize the compatibility between the first operation display terminal and the CIR device.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] I. Providing high-quality audio and video communication for locomotives: The locomotive CIR equipment and scheduling communication method supporting 5G audio and video scheduling communication in this invention support higher quality 5G broadband video (H.264) and voice (AMR-WB) encoding and decoding, which can provide locomotives with a higher quality audio and video communication experience.

[0046] Second, low transformation cost: The locomotive CIR equipment supporting 5G audio and video dispatch communication in this invention does not require changing the overall architecture of the existing locomotive integrated wireless communication equipment (CIR) host. It is compatible with the backplane hardware design of the existing CIR host. Only the main control unit and the operation display terminal MMI need to be replaced, thus protecting the investment in the existing CIR equipment.

[0047] Third, it is convenient and quick: The locomotive CIR equipment supporting 5G audio and video dispatch communication in this invention can support high-quality 5G audio and video communication simply by replacing the main control unit through plugging and unplugging. It is convenient and quick to upgrade existing CIR equipment.

[0048] IV. High versatility: The locomotive CIR equipment and scheduling communication method supporting 5G audio and video scheduling communication in this invention use high-performance hardware, and the audio encoding and decoding are implemented through software, which can flexibly support other types of multimedia encoding in the future, and has high versatility. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the CIR device in this invention;

[0050] Figure 2 This is a schematic diagram of the main control unit in this invention;

[0051] Figure 3 This is a schematic diagram of the structure of the first operation display terminal in this invention;

[0052] Figure 4 This is a schematic diagram of the CIR host structure in this invention.

[0053] The numbers in the diagram are as follows:

[0054] 1. Main control unit; 2. Chassis; 3. Subrack A; 4. Subrack B; 5. Power supply unit; 6. High-speed data unit; 7. GSM-R voice unit; 8. GSM-R data unit; 9. Satellite positioning unit; 10. Recording and switching unit; 11. 450MHz locomotive radio unit; 12. LBJ alarm unit; 13. Interface unit; 14. First operation display terminal; 15. Second operation display terminal; 101. Baseboard; 102. Core board; 103. First Ethernet port; 104. Second Ethernet port; 1021. Core The following modules are included: CIR voice service internal protocol processing module (1022), 5G voice call control protocol processing module (1023), RTP protocol processing module (1024), RTP protocol processing module (1401), human-machine interaction module for operation display terminal (1402), CIR internal communication protocol processing module for operation display terminal (1403), AMR-WB codec module for operation display terminal (1404), H.264 codec module for operation display terminal (1405), and RTP protocol processing module for operation display terminal (1406). Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0056] A locomotive CIR device supporting 5G audio and video dispatch communication, its structure is as follows: Figures 1-4 The CIR device includes a CIR host equipped with a main control unit 1 and an operation display terminal MMI. The main control unit 1 includes a base plate 101 and a core board 102. The core board 102 is mounted on the base plate 101. The base plate 101 is connected to the back panel via a socket. The base plate 101 is provided with a first Ethernet port 103 and a second Ethernet port 104. The operation display terminal MMI includes a first operation display terminal 14 and a second operation display terminal 15. The first Ethernet port 103 is connected to the first operation display terminal 14, and the second Ethernet port 104 is connected to a 5G communication module. The second operation display terminal 15 is cascaded with the first operation display terminal 14.

[0057] The existing CIR equipment's operation display terminal (MMI) is connected to the interface unit via its own cable, and the bandwidth is insufficient to support video services. This embodiment uses two cascaded operation display terminals to meet the audio and video bandwidth requirements, thereby reducing the difficulty of modifying existing CIR equipment. This embodiment describes the first operation display terminal 14, because those skilled in the art are familiar with the connection and communication methods between the second operation display terminal 15 and the first operation display terminal 14, and will not repeat them in this embodiment.

[0058] The baseboard 101 of the main control unit 1 connects to the existing CIR host backplane using a DIN4162 socket. The socket interface definition follows the existing CIR unit interface definition standards, enabling connection with other units of the existing CIR and facilitating smooth upgrades of existing CIR equipment. The front panel of the baseboard 101 of the main control unit 1 provides two M12 female Dcoding 4-pin Ethernet ports. The first Ethernet port 103 connects to the first operation display terminal 14, and the second Ethernet port 104 connects to an external 5G communication module. The core board 102 of the main control unit 1 connects to the baseboard 101 of the main control unit 1 through an internal proprietary interface, enabling the processing of signaling streams and media streams for 5G audio and video scheduling communication.

[0059] The CIR main unit also includes a chassis 2, an A subrack 3, and a B subrack 4. The A subrack 3 and B subrack 4 are respectively mounted on the chassis 2, and the main control unit 1 is mounted on the A subrack 3. The A subrack 3 is equipped with a power supply unit 5, a high-speed data unit 6, a GSM-R voice unit 7, a GSM-R data unit 8, a satellite positioning unit 9, and a recording and switching unit 10, all of which are connected to the main control unit 1. The B subrack 4 is equipped with a 450MHz locomotive radio unit 11, an LBJ alarm unit 12, and an interface unit 13. The 450MHz locomotive radio unit 11 and the LBJ alarm unit 12 communicate with the main control unit 1 through the interface unit 13 and the backplane.

[0060] Sub-rack 3 is equipped with a slot, through which the main control unit 1 is plugged into and connected to sub-rack 3.

[0061] Upgrading existing vehicle integrated wireless communication equipment (CIR) to support 5G audio and video dispatch communication services requires redesigning the CIR host main control unit and the CIR equipment's MMI. In actual engineering, the corresponding units of the new MMI and the new CIR host main control unit are replaced, and other units of the existing CIR host do not need to be replaced.

[0062] Core board 102 includes:

[0063] The CIR internal communication protocol processing module 1021 on the core board is used to process audio and video scheduling operation signaling information, realize the internal protocol processing of CIR audio and video scheduling services, and convert the internal protocol into 5G audio and video scheduling control operations to realize communication with the 5G audio and video scheduling communication protocol processing module 1022.

[0064] The core board 5G audio and video scheduling communication protocol processing module 1022 is used to realize communication with the CIR internal communication protocol processing module 1021, and at the same time to perform signaling interaction with the 5G communication module;

[0065] The core board RTP protocol processing module 1023 is used to interact with the first operation display terminal 14 for audio RTP stream, and at the same time interact with the sound card driver of the main control unit 1 for the corresponding audio RTP stream.

[0066] The first operation display terminal 14 includes:

[0067] The operation display terminal human-computer interaction module 1401 is used to realize the human-computer interaction of MMI;

[0068] The operation display terminal CIR internal communication protocol processing module 1402 is used to interact with the main control unit 1 5G audio and video scheduling service signaling and the existing control flow within the CIR;

[0069] The operation display terminal AMR-WB codec module 1403 is used to convert the audio bitstream between PCM encoding and AMR-WB encoding.

[0070] The operation display terminal H.264 encoding / decoding module 1404 is used to perform H.264 encoding / decoding operations on the video stream;

[0071] The operation display terminal RTP protocol processing module 1405 is used to package audio and video streams and extract audio and video streams from RTP packets.

[0072] This embodiment also relates to a 5G audio and video scheduling communication method for the locomotive CIR equipment, including:

[0073] The 5G signaling flow communication sub-method is used to realize the interaction of signaling flow among the MMI, CIR host and 5G communication module;

[0074] A 5G media stream communication sub-method is used to realize the interaction of media streams among the MMI, CIR host and 5G communication module;

[0075] Existing control flow communication sub-methods are used to implement the interaction of existing control flows between the MMI and CIR host;

[0076] An existing audio stream communication sub-method is used to enable the interaction of existing audio streams between the MMI and CIR hosts.

[0077] The specific 5G signaling stream communication sub-method is as follows:

[0078] The first operation display terminal 14 of the existing vehicle integrated wireless communication equipment (CIR) handles individual calls, function calls, group calls, emergency calls and other operations of 5G audio and video dispatch services, and realizes the signaling transmission and reception of 5G audio and video dispatch services within the CIR equipment through the first Ethernet port 103 of the main control unit 1.

[0079] The operation display terminal human-machine interaction module 1401 receives instructions from the input device, generates 5G audio and video scheduling service operation instructions, and transmits the relevant operation instructions to the operation display terminal CIR internal communication protocol processing module 1402. The operation display terminal CIR internal communication protocol processing module 1402 converts the corresponding 5G audio and video scheduling service operation instructions into internal communication protocol information between the MMI and the CIR host, and sends it to the main control unit 1 through the first external network port 103.

[0080] The CIR internal communication protocol processing module 1021 on the core board of the main control unit 1 processes 5G audio and video scheduling service operation commands, realizes the internal protocol processing of CIR audio and video scheduling services, converts the internal protocol into 5G audio and video scheduling control operations, and sends them to the 5G audio and video scheduling communication protocol processing module 1022 on the core board. The 5G audio and video scheduling communication protocol processing module 1022 on the core board communicates with the 5G communication module through the second Ethernet port 104, and realizes signaling interaction with the 5G audio and video scheduling service server through the 5G network.

[0081] The specific sub-method of 5G media stream communication is as follows:

[0082] The method by which the main control unit 1 sends the media stream to the 5G communication module is as follows:

[0083] The first operation display terminal 14 sends an RTP packet containing AMR-WB voice to the main control unit 1. The core board 5G audio and video scheduling communication protocol processing module 1022 forwards the corresponding voice RTP packet to a specific UDP port of the second Ethernet port 104, thereby sending it to the 5G network and server through the 5G communication module. The first operation display terminal 14 sends an RTP packet containing H.264 video to the main control unit 1. The core board 5G audio and video scheduling communication protocol processing module 1022 sends the corresponding video RTP packet to the 5G communication module through a specific UDP port of the second Ethernet port 104.

[0084] The method by which the main control unit 1 receives the media stream from the 5G communication module is as follows:

[0085] The 5G communication module sends voice RTP packets to a specific UDP port of the second Ethernet port 104. The core board 5G audio and video scheduling communication protocol processing module 1022 forwards the corresponding voice RTP packets to a specific UDP port of the first Ethernet port 103, thereby forwarding the audio stream to the first operation display terminal 14. The 5G communication module sends video RTP packets to a specific UDP port of the second Ethernet port 10. The core board 5G audio and video scheduling communication protocol processing module 1022 forwards the corresponding video RTP packets to a specific UDP port of the first Ethernet port 103, thereby forwarding the audio stream to the first operation display terminal 14.

[0086] The method by which the first operation display terminal 14 sends the media stream to the main control unit 1 is as follows:

[0087] The audio driver of the first operation display terminal 14 performs audio acquisition and analog-to-digital conversion from the corresponding audio channel to form a PCM digital audio stream. The AMR-WB encoding and decoding module 1403 of the operation display terminal converts the audio stream from PCM encoding to AMR-WB encoding. The RTP protocol processing module 1405 of the operation display terminal encapsulates the AMR-WB stream into RTP packets and sends the audio RTP packets to the main control unit 1 through a specific UDP port provided by the first Ethernet port 103. The first operation display terminal 14 performs video acquisition through the video driver to form a digital video stream. The H.264 encoding and decoding module 1404 of the operation display terminal encapsulates the video stream into H.264 format. The RTP protocol processing module 1405 of the operation display terminal encapsulates the H.264 stream into RTP packets and sends the video RTP packets to the main control unit 1 through a specific UDP port provided by the first Ethernet port 103.

[0088] The method by which the first operation display terminal 14 receives the media stream from the main control unit 1 is as follows:

[0089] The RTP protocol processing module 1405 of the first operation display terminal 14 receives voice RTP packets from a specific UDP port of the first Ethernet port 103, extracts the AMR-WB voice data stream from them, and forwards the voice data to the AMR-WB codec module 1403. The AMR-WB codec module 1403 decodes the voice data and outputs it as a PCM data stream to the audio driver to complete the sound playback. The RTP protocol processing module 1405 of the first operation display terminal 14 also receives video RTP packets from a specific UDP port of the first Ethernet port 103, extracts the H.264 video stream from them, and forwards the H.264 video data to the H.264 codec module 1404. The H.264 codec module 1404 decodes the video data and outputs it as a video data stream to the display driver to complete the video playback.

[0090] The existing control flow communication sub-methods are as follows:

[0091] The CIR internal communication protocol processing module 1021 of the core board interacts with the first operation display terminal 14 through a specific UDP port of the first Ethernet port 103 to exchange the existing control flow within the CIR. At the same time, the main control unit 91 communicates the corresponding control commands with other units of the CIR host through the interface of the backplane to achieve compatibility between the main control unit 1 and the CIR device.

[0092] The CIR internal communication protocol processing module 1402 of the operation display terminal interacts with the main control unit 1 through a specific UDP port of the first Ethernet port 103 to access the existing control flow within the CIR, and realizes human-machine interaction through the operation display terminal human-machine interaction module 1401, thereby achieving compatibility between the first operation display terminal 14 and the CIR device.

[0093] The existing audio stream communication sub-methods are as follows:

[0094] The core board RTP protocol processing module 1023 interacts with the first operation display terminal 14 through a specific UDP port of the first Ethernet port 103 to exchange the existing audio RTP stream inside the CIR, and at the same time interacts with the sound card driver of the main control unit 1 to realize the analog-to-digital / digital-to-analog conversion of audio. Then, it communicates with other units of the CIR host through the interface of the backplane to realize the compatibility between the main control unit 1 and the CIR device.

[0095] The RTP protocol processing module 1405 of the operation display terminal interacts with the existing audio stream inside the CIR through a specific UDP port of the first Ethernet port 103 to complete the RTP encapsulation or decapsulation of the digital audio stream. At the same time, it interacts with the sound card driver of the first operation display terminal 14 to complete the acquisition and playback of audio, thereby achieving compatibility between the first operation display terminal 14 and the CIR device.

[0096] A Linux operating system is installed on the main control unit 1, and the above software process is implemented through the Linux operating system.

[0097] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A locomotive CIR device supporting 5G audio and video dispatch communication, the CIR device comprising a CIR host with a main control unit (1) and an operation display terminal (MMI), the CIR host comprising a backplane, characterized in that, The CIR device is compatible with the backplane hardware design of existing CIR main units, requiring only the replacement of the main control unit and the operation display terminal MMI. The main control unit (1) includes a base plate (101) and a core board (102); the core board (102) is mounted on the base plate (101); the base plate (101) is connected to the back plate via a socket; the base plate (101) is provided with a first Ethernet port (103) and a second Ethernet port (104); the operation display terminal MMI includes a first operation display terminal (14) and a second operation display terminal (15); the first Ethernet port (103) is connected to the first operation display terminal (14), and the second Ethernet port (104) is connected to the 5G communication module; The second operation display terminal (15) is cascaded with the first operation display terminal (14); The core board (102) includes: The core board CIR internal communication protocol processing module (1021) is used to process audio and video scheduling operation signaling information, realize the internal protocol processing of CIR audio and video scheduling services, and convert the internal protocol into 5G audio and video scheduling control operations to realize communication with the 5G audio and video scheduling communication protocol processing module (1022). The core board 5G audio and video scheduling communication protocol processing module (1022) is used to communicate with the CIR internal communication protocol processing module (1021) and to interact with the 5G communication module via signaling. The core board RTP protocol processing module (1023) is used to interact with the first operation display terminal (14) for audio RTP stream, and at the same time interact with the sound card driver of the main control unit (1) for the corresponding audio RTP stream.

2. The locomotive CIR device supporting 5G audio and video dispatch communication according to claim 1, characterized in that, The CIR host also includes a frame (2), an A subframe (3), and a B subframe (4); the A subframe (3) and the B subframe (4) are respectively mounted on the frame (2); the main control unit (1) is mounted on the A subframe (3); The A subframe (3) is equipped with a power supply unit (5), a high-speed data unit (6), a GSM-R voice unit (7), a GSM-R data unit (8), a satellite positioning unit (9), and a recording and switching unit (10), which are respectively connected to the main control unit (1). The B subframe (4) is equipped with a 450MHz locomotive radio unit (11), an LBJ alarm unit (12), and an interface unit (13); the 450MHz locomotive radio unit (11) and the LBJ alarm unit (12) communicate with the main control unit (1) through the interface unit (13) and the backplane.

3. A locomotive CIR device supporting 5G audio and video dispatch communication according to claim 2, characterized in that, The A subframe (3) is provided with a slot; the main control unit (1) is plugged into the A subframe (3) through the slot.

4. A locomotive CIR device supporting 5G audio and video dispatch communication according to claim 1, characterized in that, The first operation display terminal (14) includes: The operation display terminal human-computer interaction module (1401) is used to realize the human-computer interaction of MMI; The operation display terminal CIR internal communication protocol processing module (1402) is used to interact with the main control unit (1) 5G audio and video scheduling service signaling and existing control flow within the CIR; The operation display terminal AMR-WB codec module (1403) is used to convert the audio bitstream between PCM encoding and AMR-WB encoding. The operation display terminal H.264 encoding / decoding module (1404) is used to perform H.264 encoding / decoding operations on the video stream; The operation display terminal RTP protocol processing module (1405) is used to package audio and video streams and extract audio and video streams from RTP packets.

5. A 5G audio and video scheduling communication method for locomotive CIR equipment as described in any one of claims 1 to 4, characterized in that, The 5G audio and video scheduling communication method includes: The 5G signaling flow communication sub-method is used to realize the interaction of signaling flow among the MMI, CIR host and 5G communication module; A 5G media stream communication sub-method is used to realize the interaction of media streams among the MMI, CIR host and 5G communication module; Existing control flow communication sub-methods are used to implement the interaction of existing control flows between the MMI and CIR host; An existing audio stream communication sub-method is used to enable the interaction of existing audio streams between the MMI and CIR hosts.

6. A 5G audio and video scheduling communication method according to claim 5, characterized in that, The 5G signaling stream communication sub-method is specifically as follows: The operation display terminal human-machine interaction module (1401) receives instructions from the input device, generates 5G audio and video scheduling service operation instructions, and transmits the relevant operation instructions to the operation display terminal CIR internal communication protocol processing module (1402); the operation display terminal CIR internal communication protocol processing module (1402) converts the corresponding 5G audio and video scheduling service operation instructions into internal communication protocol information between the MMI and the CIR host, and sends it to the main control unit (1) through the first external network port (103). The CIR internal communication protocol processing module (1021) of the core board in the main control unit (1) processes the 5G audio and video scheduling service operation instructions, realizes the internal protocol processing of the CIR audio and video scheduling service, converts the internal protocol into 5G audio and video scheduling control operation, and sends it to the 5G audio and video scheduling communication protocol processing module (1022) of the core board; the 5G audio and video scheduling communication protocol processing module (1022) of the core board communicates with the 5G communication module through the second Ethernet port (104), and realizes the signaling interaction with the 5G audio and video scheduling service server through the 5G network.

7. A 5G audio and video scheduling communication method according to claim 5, characterized in that, The 5G media stream communication sub-method is specifically as follows: The main control unit (1) sends the media stream to the 5G communication module in the following way: The first operation display terminal (14) sends an RTP packet containing AMR-WB voice to the main control unit (1), and the core board 5G audio and video scheduling communication protocol processing module (1022) forwards the corresponding voice RTP packet to a specific UDP port of the second Ethernet port (104), thereby sending it to the 5G network and server through the 5G communication module; the first operation display terminal (14) sends an RTP packet containing H.264 video to the main control unit (1), and the core board 5G audio and video scheduling communication protocol processing module (1022) sends the corresponding video RTP packet to the 5G communication module through a specific UDP port of the second Ethernet port (104); The main control unit (1) receives the media stream from the 5G communication module in the following way: The 5G communication module sends voice RTP packets to a specific UDP port of the second Ethernet port (104), and the core board 5G audio and video scheduling communication protocol processing (1022) forwards the corresponding voice RTP packets to a specific UDP port of the first Ethernet port (103), thereby forwarding the audio stream to the first operation display terminal (14); the 5G communication module sends video RTP packets to a specific UDP port of the second Ethernet port (104), and the core board 5G audio and video scheduling communication protocol processing module (1022) forwards the corresponding video RTP packets to a specific UDP port of the first Ethernet port (103), thereby forwarding the audio stream to the first operation display terminal (14). The method by which the first operation display terminal (14) sends the media stream to the main control unit (1) is as follows: The audio driver of the first operation display terminal (14) performs audio acquisition and analog-to-digital conversion from the corresponding audio channel to form a PCM digital audio stream. The AMR-WB encoding and decoding module (1403) of the operation display terminal converts the audio stream from PCM encoding to AMR-WB encoding. The RTP protocol processing module (1405) of the operation display terminal encapsulates the ARM-WB stream into RTP packets and sends the audio RTP packets to the main control unit (1) through a specific UDP port provided by the first Ethernet port (103). The first operation display terminal (14) performs video acquisition through the video driver to form a digital video stream. The H.264 encoding and decoding module (1404) of the operation display terminal encapsulates the video stream into H.264 format. The RTP protocol processing module (1405) of the operation display terminal encapsulates the H.264 stream into RTP packets and sends the video RTP packets to the main control unit (1) through a specific UDP port provided by the first Ethernet port (103). The method by which the first operation display terminal (14) receives the media stream from the main control unit (1) is as follows: The RTP protocol processing module (1405) of the first operation display terminal (14) receives voice RTP packets from a specific UDP port of the first Ethernet port (103), extracts AMR-WB voice data stream from them, and forwards the voice data to the AMR-WB codec module (1403) of the operation display terminal. The AMR-WB codec module (1403) of the operation display terminal performs voice decoding to form a PCM data stream and outputs it to the audio driver to complete the playback of the sound. The RTP protocol processing module (1405) of the first operation display terminal (14) receives video RTP packets from a specific UDP port of the first Ethernet port (103), extracts H.264 video stream from them, and forwards the H.264 video data to the H.264 codec module (1404) of the operation display terminal. The H.264 codec module (1404) of the operation display terminal performs video decoding to form a video data stream and outputs it to the display driver to complete the playback of the video.

8. A 5G audio and video scheduling communication method according to claim 5, characterized in that, The existing control flow communication sub-method is specifically as follows: The CIR internal communication protocol processing module (1021) of the core board interacts with the first operation display terminal (14) through a specific UDP port of the first Ethernet port (103) to communicate with the existing control flow inside the CIR. At the same time, the main control unit (1) communicates the corresponding control commands with other units of the CIR host through the interface of the backplane to achieve compatibility between the main control unit (1) and the CIR device. The CIR internal communication protocol processing module (1402) of the operation display terminal interacts with the main control unit (1) through a specific UDP port of the first Ethernet port (103) to communicate with the existing control flow inside the CIR, and realizes human-machine interaction through the operation display terminal human-machine interaction module (1401) to achieve compatibility between the first operation display terminal (14) and the CIR device.

9. A 5G audio and video scheduling communication method according to claim 5, characterized in that, The existing audio stream communication sub-method is specifically as follows: The core board RTP protocol processing module (1023) interacts with the first operation display terminal (14) through a specific UDP port of the first Ethernet port (103) to exchange the existing audio RTP stream inside the CIR, and at the same time interacts with the sound card driver of the main control unit (1) to realize the analog-to-digital / digital-to-analog conversion of audio. Then, it communicates with other units of the CIR host through the interface of the backplane to realize the compatibility between the main control unit (1) and the CIR device. The RTP protocol processing module (1405) of the operation display terminal interacts with the main control unit (1) through a specific UDP port of the first Ethernet port (103) to exchange the existing audio stream inside the CIR, complete the RTP encapsulation or decapsulation of the digital audio stream, and at the same time interacts with the sound card driver of the first operation display terminal (14) to exchange the digital audio stream, complete the audio acquisition and playback, and realize the compatibility between the first operation display terminal (14) and the CIR device.

Images