Locomotive CIR host supporting 5G broadband voice AMR-WB dispatch communication and dispatch communication method

Abstract

This invention relates to a locomotive CIR host and scheduling communication method supporting 5G broadband voice AMR-WB scheduling communication. The CIR host is implemented by replacing the main control unit on an existing CIR host. 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, which is connected to the backplane. The base plate has an Ethernet port, and the CIR host connects to a 5G communication module via the Ethernet interface to achieve 5G broadband voice AMR-WB scheduling communication. Compared with existing technologies, this invention offers advantages such as providing higher quality voice communication for locomotives, low modification costs, convenience, and strong versatility.

Description

Technical Field

[0001] This invention relates to the field of locomotive wireless communication technology, and in particular to a locomotive CIR host and scheduling communication method that supports 5G broadband voice AMR-WB scheduling communication. Background Technology

[0002] The GSM-R system is primarily used for railway wireless dispatching and train control communication. Locomotive Integrated Radio Interchange (CIR) equipment has been widely used in railway GSM-R wireless dispatching communication and is a key onboard device for daily railway voice dispatching communication services. With the development of mobile communication technology, and to adapt to the needs of the times, GSM-R will be gradually phased out of the railway market around 2030. The railway industry is currently conducting in-depth research on 5G dedicated communication systems to meet the future needs of railway mobile communication development.

[0003] The future railway 5G private network dispatch communication system will adopt wideband voice (AMR-WB) technology. However, the locomotive integrated wireless communication equipment (CIR) mainly adopts the technology design of more than ten years ago, which is based on the overall idea of ​​single-chip microcomputer plus serial bus. It is difficult to meet the requirements of railway 5G wideband voice (AMR-WB) dispatch communication using the existing main control unit. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a locomotive CIR host and scheduling communication method that supports 5G broadband voice AMR-WB scheduling communication, provides higher quality voice 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 host supporting 5G broadband voice AMR-WB dispatch communication is disclosed. The CIR host is implemented by replacing the main control unit on an existing CIR host. 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. The base plate is provided with an Ethernet port, and the CIR host is connected to a 5G communication module through the Ethernet interface to realize 5G broadband voice AMR-WB dispatch communication.

[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 backplane and the main control unit of the A subframe through the interface unit.

[0010] More 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 CIR voice service internal protocol processing module receives and sends voice dispatch operation signaling messages, implements CIR voice dispatch service internal protocol processing, and converts the internal protocol into 5G voice dispatch control operations. It communicates with the 5G voice call control protocol processing module through a message queue.

[0013] The 5G voice call control protocol processing module enables communication with the internal protocol processing module of the CIR voice service, and also performs signaling interaction with the 5G communication module via UDP / IP and Ethernet.

[0014] The AMR-WB audio codec module is used to convert audio streams between PCM encoding and AMR-WB encoding.

[0015] The RTP protocol processing module is used to encapsulate AMR-WB audio encoding into RTP packets and interact with the 5G communication module for voice media streams via UDP / IP and Ethernet channels. It is also used to extract ARM-WB audio bitstreams from RTP packets.

[0016] Preferably, the core board is equipped with a drive module.

[0017] More preferably, the driver module includes a serial port driver, an audio driver, and a network port driver.

[0018] A 5G broadband voice AMR-WB scheduling communication method for a locomotive CIR host as described in any of the above claims, the 5G broadband voice AMR-WB scheduling communication method comprising:

[0019] The voice dispatch operation signaling transmission and reception communication sub-method is used to implement the transmission and reception of voice dispatch operation signaling within the CIR;

[0020] A sub-method for sending voice media streams is used to send voice media streams from the CIR to the 5G communication module;

[0021] An audio stream receiving sub-method is used to receive audio streams sent by the 5G communication module;

[0022] The CIR host implements communication scheduling with the existing 5G voice scheduling service server through the voice scheduling operation signaling transmission and reception communication sub-method, the voice media stream transmission sub-method, and the audio stream reception sub-method.

[0023] Preferably, the voice scheduling operation signaling transmission and reception communication sub-method specifically comprises:

[0024] The CIR voice service internal protocol processing module sends and receives voice dispatch operation signaling messages through a specific serial port to realize the CIR voice dispatch service internal protocol processing, and converts the internal protocol into 5G voice dispatch control operations. It communicates with the 5G voice call control protocol processing module through a message queue.

[0025] The 5G voice call control protocol processing module interacts with the internal protocol processing module of the CIR voice service on the one hand, and implements the 5G voice dispatch control protocol on the other. Its signaling messages interact with the 5G communication module through UDP / IP and Ethernet, and finally realize signaling communication with the 5G voice dispatch service server through the 5G network.

[0026] Preferably, the voice media stream sending sub-method specifically comprises:

[0027] The CIR transmits the collected analog voice data to the main control unit via the analog audio channel on the backplane.

[0028] The audio driver of the main control unit core board performs audio acquisition and analog-to-digital conversion from the corresponding audio channel to form a PCM digital audio stream;

[0029] The AMR-WB audio codec module converts the audio stream from PCM encoding to AMR-WB encoding, forming an AMR-WB audio stream that meets the requirements of 5G broadband voice communication.

[0030] The RTP protocol processing module encapsulates ARM-WB into RTP packets, sends the RTP packets to the 5G communication module via UDP / IP and Ethernet, and then sends the voice media stream to the 5G voice dispatch service server via the 5G communication module and the 5G network.

[0031] Preferably, the audio stream receiving sub-method specifically comprises:

[0032] The main control unit of CIR receives broadband voice RTP media streams sent by the 5G voice dispatch service server from the 5G communication module via UDP / IP and Ethernet.

[0033] The RTP protocol processing module unpacks the RTP media stream sequentially and extracts the ARM-WB audio bitstream from it;

[0034] The AMR-WB audio codec module decodes the AMR-WB audio stream into a PCM audio stream;

[0035] The audio driver of the main control unit core board sends the PCM audio bitstream to the sound card for digital-to-analog conversion to form analog audio, and sends the sound to the operation display terminal MMI connected to the CIR host through the analog audio channel on the back panel.

[0036] MMI will play the analog voice through a speaker.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] I. Providing higher quality voice communication for locomotives: Compared with the FR / HR voice codec of GSM-R, the locomotive CIR host and dispatch communication method supporting 5G broadband voice AMR-WB dispatch communication in this invention can support higher quality 5G broadband voice (AMR-WB) codec after modification, thus providing higher quality voice communication for locomotives.

[0039] II. Low retrofit cost: The locomotive CIR host supporting 5G broadband voice AMR-WB dispatch communication in this invention does not change the overall architecture of the existing locomotive integrated wireless communication equipment (CIR), is compatible with the backplane hardware design of the existing CIR, and does not require replacement of other units of the existing CIR except for the main control unit, thus protecting the investment in the existing CIR equipment.

[0040] Third, convenient and quick: The locomotive CIR host supporting 5G broadband voice AMR-WB dispatch communication in this invention can support 5G broadband voice dispatch communication requirements simply by replacing the main control unit. Moreover, the main control unit is plugged into the A subframe via a slot, making the modification convenient and quick.

[0041] IV. High versatility: The locomotive CIR host and communication method supporting 5G broadband voice AMR-WB dispatch communication in this invention use high-performance hardware, and all voice encoding and decoding are implemented in software. It can flexibly support other types of multimedia encoding in the future, and has high versatility. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the module structure of the CIR host in this invention;

[0043] Figure 2 This is a schematic diagram of the main control unit in this invention;

[0044] Figure 3 This is a schematic diagram of the CIR host structure in this invention.

[0045] The numbers in the diagram are as follows:

[0046] 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; 101. Baseboard; 102. Core board; 103. Ethernet interface; 1021. CIR voice service internal protocol processing module; 1022. 5G voice call control protocol processing module; 1023. AMR-WB audio codec module; 1024. RTP protocol processing module. Detailed Implementation

[0047] 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.

[0048] A locomotive CIR host supporting 5G broadband voice AMR-WB dispatch communication has the following structure: Figure 1 , Figure 2 and Figure 3 As shown, the CIR host is implemented by replacing the main control unit 1 on an existing CIR host. The CIR host includes a backplane, and the main control unit 1 includes a baseboard 101 and a core board 102. The core board 102 is installed on the baseboard 101, and the baseboard 101 is connected to the backplane. The baseboard 101 is provided with an Ethernet port 103. The CIR host is connected to the 5G communication module through the Ethernet interface 103 to realize 5G broadband voice AMR-WB scheduling communication.

[0049] The CIR main unit also includes a cabinet 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 of the A subrack through the interface unit 13 and the backplane.

[0050] Sub-rack 3 is equipped with a slot, through which the main control unit 1 is plugged into and connected to sub-rack 3.

[0051] The baseboard of Main Control Unit 1 connects to the CIR host backplane using a DIN4162 socket. The socket interface definition follows the existing CIR unit interface definition standards, enabling connection with other existing CIR units and facilitating smooth upgrades of existing CIR equipment. The front panel of Main Control Unit 1's baseboard provides a 100M Ethernet port via an M12 female D-coding 4-pin socket for connection to an external 5G communication module. The core board of Main Control Unit 1 connects to the baseboard via an internal proprietary interface, enabling the processing of signaling and media streams for 5G broadband voice dispatch communication.

[0052] Core board 102 includes:

[0053] The CIR voice service internal protocol processing module 1021 receives and sends voice dispatch operation signaling messages, implements CIR voice dispatch service internal protocol processing, and converts the internal protocol into 5G voice dispatch control operations. It communicates with the 5G voice call control protocol processing module 1022 through a message queue.

[0054] The 5G voice call control protocol processing module 1022 enables communication with the CIR voice service internal protocol processing module 1021, and also performs signaling interaction with the 5G communication module via UDP / IP and Ethernet.

[0055] The AMR-WB audio codec module 1023 is used to convert the audio bitstream between PCM encoding and AMR-WB encoding.

[0056] The RTP protocol processing module 1024 is used to encapsulate AMR-WB audio encoding into RTP packets and interact with the 5G communication module for voice media streams via UDP / IP and Ethernet channels. It is also used to extract ARM-WB audio bitstreams from RTP packets.

[0057] The core board 102 is equipped with driver modules, including serial port driver, audio driver and network port driver.

[0058] The 5G broadband voice AMR-WB scheduling communication method includes:

[0059] The voice dispatch operation signaling transmission and reception communication sub-method is used to implement the transmission and reception of voice dispatch operation signaling within the CIR.

[0060] The voice media stream sending sub-method is used to send the voice media stream from the CIR to the 5G communication module.

[0061] The audio stream receiving sub-method is used to receive the audio stream sent by the 5G communication module.

[0062] The CIR host implements communication scheduling with the existing 5G voice scheduling service server through the voice scheduling operation signaling transmission and reception communication sub-method, the voice media stream transmission sub-method, and the audio stream reception sub-method.

[0063] The specific sub-method for voice dispatch operation signaling transmission and reception is as follows:

[0064] The CIR's MMI (Management Interface) is the operational terminal for voice dispatch services. It can process voice dispatch operations such as individual calls, function calls, group calls, and emergency calls. It transmits and receives internal voice dispatch operation signaling through the serial bus on the CIR host backplane and a specific serial port of the main control unit 1. The CIR voice service internal protocol processing module 1021 on the core board 102 of the main control unit 1 processes the internal protocol of the CIR voice dispatch service by receiving and sending MMI voice dispatch operation signaling messages through the specific serial port. It then converts the internal protocol into 5G voice dispatch control operations and communicates with the 5G voice call control protocol processing module 1022 through a message queue. The 5G voice call control protocol processing module 1022 interacts with the software module and implements the 5G voice dispatch control protocol. Its signaling messages interact with the 5G communication module through the Ethernet channel provided by UDP / IP and the 100Mbps network port. Ultimately, it communicates with the 5G voice dispatch service server through the 5G network, enabling signaling processing of the 5G voice dispatch service and control of the 5G voice service media stream of the main control unit.

[0065] The specific sub-method for sending the voice media stream is as follows:

[0066] The process of CIR sending voice media stream to 5G communication module is as follows: CIR's MMI sends the analog voice acquired from the microphone to main control unit 1 through the analog audio channel of the existing CIR backplane; the audio driver of core board 102 performs audio acquisition and analog-to-digital conversion from the corresponding audio channel, with an acquisition frequency of 16kHz and a sampling quantization depth of 16bit, forming a PCM digital audio stream; AMR-WB audio codec module 1023 converts the audio stream from PCM encoding to AMR-WB encoding, forming an AMR-WB audio stream with a rate of 23.85kbit / s, meeting the requirements of 5G broadband voice communication; RTP protocol processing module 1024 encapsulates ARM-WB into RTP packets, and sends the voice media stream to the 5G voice dispatch service server through the Ethernet channel provided by UDP / IP and 100Mbps network port, via the 5G communication module and 5G network.

[0067] The audio stream receiving sub-method is as follows:

[0068] The CIR's main control unit receives the broadband voice RTP media stream sent by the 5G voice dispatch service server from the 5G communication module via the Ethernet channel provided by UDP / IP and the 100Mbps network port. The RTP protocol processing module unpacks the RTP stream sequentially and extracts the ARM-WB audio bitstream. The ARM-WB audio codec module decodes the ARM-WB audio bitstream into a PCM audio bitstream. The audio driver on the main control unit's core board sends the PCM audio bitstream to the sound card for digital-to-analog conversion to form analog audio. The audio is then sent to the CIR's MMI through the analog audio channel on the CIR backplane. The MMI plays the analog voice through the speaker.

[0069] A Linux operating system is installed on the main control unit 1, and the above software process is implemented through the Linux operating system.

[0070] 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 host supporting 5G broadband voice AMR-WB dispatch communication, wherein the CIR host is implemented by replacing the main control unit (1) on an existing CIR host, the CIR host includes a backplane, characterized in that, 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 backplane; the base plate (101) is provided with an Ethernet interface (103), and the CIR host is connected to the 5G communication module through the Ethernet interface (103) to realize 5G broadband voice AMR-WB scheduling communication; The core board (102) includes: The CIR voice service internal protocol processing module (1021) receives and sends voice dispatch operation signaling messages, implements CIR voice dispatch service internal protocol processing, and converts the internal protocol into 5G voice dispatch control operations. It communicates with the 5G voice call control protocol processing module (1022) through a message queue. The 5G voice call control protocol processing module (1022) enables communication with the CIR voice service internal protocol processing module (1021), and also performs signaling interaction with the 5G communication module via UDP / IP and Ethernet. The AMR-WB audio codec module (1023) is used to convert the audio bitstream between PCM encoding and AMR-WB encoding. The RTP protocol processing module (1024) is used to encapsulate AMR-WB audio encoding into RTP packets and interact with the 5G communication module for voice media streams via UDP / IP and Ethernet channels. It is also used to extract ARM-WB audio bitstreams from RTP packets.

2. A locomotive CIR host supporting 5G broadband voice AMR-WB 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) of the A subframe through the interface unit (13) and the backplane.

3. A locomotive CIR host supporting 5G broadband voice AMR-WB 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 host supporting 5G broadband voice AMR-WB dispatch communication according to claim 1, characterized in that, The core board (102) is equipped with a drive module.

5. A locomotive CIR host supporting 5G broadband voice AMR-WB dispatch communication according to claim 4, characterized in that, The driver module includes a serial port driver, an audio driver, and a network port driver.

6. A 5G broadband voice AMR-WB scheduling communication method for a locomotive CIR host as described in any one of claims 1 to 5, characterized in that, The 5G broadband voice AMR-WB scheduling communication method includes: The voice dispatch operation signaling transmission and reception communication sub-method is used to implement the transmission and reception of voice dispatch operation signaling within the CIR; A sub-method for sending voice media streams is used to send voice media streams from the CIR to the 5G communication module; An audio stream receiving sub-method is used to receive audio streams sent by the 5G communication module; The CIR host implements communication scheduling with the existing 5G voice scheduling service server through the voice scheduling operation signaling transmission and reception communication sub-method, the voice media stream transmission sub-method, and the audio stream reception sub-method.

7. A 5G broadband voice AMR-WB scheduling communication method according to claim 6, characterized in that, The specific sub-method for transmitting and receiving voice dispatching operation signaling is as follows: The CIR voice service internal protocol processing module sends and receives voice dispatch operation signaling messages through a specific serial port to realize the CIR voice dispatch service internal protocol processing, and converts the internal protocol into 5G voice dispatch control operations. It communicates with the 5G voice call control protocol processing module through a message queue. The 5G voice call control protocol processing module interacts with the internal protocol processing module of the CIR voice service on the one hand, and implements the 5G voice dispatch control protocol on the other. Its signaling messages interact with the 5G communication module through UDP / IP and Ethernet, and finally realize signaling communication with the 5G voice dispatch service server through the 5G network.

8. A 5G broadband voice AMR-WB scheduling communication method according to claim 6, characterized in that, The specific sub-method for sending the voice media stream is as follows: The CIR transmits the acquired analog speech to the main control unit through the analog audio channel on the backplane. The audio driver of the main control unit core board performs audio acquisition and analog-to-digital conversion from the corresponding audio channel to form a PCM digital audio stream; The AMR-WB audio codec module converts the audio stream from PCM encoding to AMR-WB encoding, forming an AMR-WB audio stream that meets the requirements of 5G broadband voice communication. The RTP protocol processing module encapsulates ARM-WB into RTP packets, sends the RTP packets to the 5G communication module via UDP / IP and Ethernet, and then sends the voice media stream to the 5G voice dispatch service server via the 5G communication module and the 5G network.

9. A 5G broadband voice AMR-WB scheduling communication method according to claim 6, characterized in that, The audio stream receiving sub-method is specifically as follows: The main control unit of CIR receives broadband voice RTP media streams sent by the 5G voice dispatch service server from the 5G communication module via UDP / IP and Ethernet. The RTP protocol processing module unpacks the RTP media stream sequentially and extracts the ARM-WB audio bitstream from it; The AMR-WB audio codec module decodes the AMR-WB audio stream into a PCM audio stream; The audio driver of the main control unit core board sends the PCM audio bitstream to the sound card for digital-to-analog conversion to form analog audio, and sends the sound to the operation display terminal MMI connected to the CIR host through the analog audio channel on the back panel. MMI will play the analog voice through a speaker.

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