Wireless radio station voice network transfer device without central server

Abstract

The utility model discloses a wireless radio station voice network transfer device without a central server, and belongs to the technical field of wireless communication. The device comprises terminal equipment (a radio station / radio station hand microphone), an audio processing unit (an audio interface unit and an audio interface control unit), a core processing unit (DSP), a network interaction unit, a power supply unit and an optional voice synthesis processing unit (TTS). The terminal equipment collects voice signals, the format of the voice signals is converted through the audio processing unit, the DSP carries out coding compression, and the voice signals are accessed to an office intranet and other networks through the network interaction unit to achieve cross-regional transmission. All the units are connected through standardized lines such as SP / MIC / Ai / Ao, a decentralized architecture is adopted, and voice unicast, broadcast and multicast transfer can be achieved without a central server. The device has the advantages of being high in reliability, flexible in networking, low in cost, efficient in processing, high in compatibility (adaptive to various radio stations) and the like, and is suitable for cross-regional communication scenes such as railway centralized operation command, emergency rescue and the like.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication technology, specifically to a radio station voice network relay device that does not require a central server. It achieves flexible networking and efficient transmission of cross-regional voice communication through a decentralized architecture, and is suitable for scenarios such as centralized command of railway operations and emergency rescue. Background Technology

[0002] In the field of wireless communication, handheld wireless radios are limited by power (typically 1-5 watts), strictly restricting their communication range to 1-3 kilometers, making it difficult to meet the cross-regional communication needs of railway operation command and emergency rescue. Existing technologies mainly attempt to extend coverage through the following methods, but all have significant drawbacks:

[0003] 1. Limitations of repeater technology

[0004] Co-frequency repeaters: They extend coverage by receiving and forwarding co-frequency signals, but due to their own power limitations, the communication distance can only be extended to a limited extent, and they cannot break through the "single-hop" transmission bottleneck, making it difficult to achieve cross-regional cascading networking.

[0005] Inter-frequency repeaters: Although they avoid co-channel interference by switching frequencies, they require additional spectrum resources, are prone to introducing cross-band interference, and dual-frequency conversion increases equipment complexity. In practice, deployment costs and reliability have not been significantly improved.

[0006] Common problems: Both types of repeaters rely on fixed node deployment, cannot escape physical power limitations, and have fixed network topologies, making it difficult to adapt to dynamically changing communication scenarios (such as real-time communication of rescue teams in motion).

[0007] 2. Deficiencies of RF power amplification technology

[0008] While increasing the signal strength by adding an RF power amplifier, this approach has a fundamental flaw:

[0009] Limited coverage improvement: Power amplification only linearly extends the signal transmission distance, with only a slight improvement in penetration capability in complex terrains (such as mountainous areas and urban building complexes);

[0010] Poor equipment reliability: High-power operation can easily lead to overheating and burnout of amplifier components, especially in industrial settings such as railways, where environmental factors such as vibration and dust further reduce stability.

[0011] 3. Inherent drawbacks of centralized network architecture

[0012] While wireless voice network relay systems with a central server can achieve long-distance communication through server scheduling, they expose the following fatal flaws:

[0013] Single point of failure risk: If the central server fails due to hardware failure, network attack, or communication congestion, the entire system will be interrupted. For example, a failure of the railway dispatch center server may cause a complete halt to command and communication across the entire line, posing a significant safety hazard.

[0014] The architecture is complex and costly: it requires the deployment of dedicated servers, databases and supporting management software, with construction costs reaching hundreds of thousands of yuan. Furthermore, subsequent maintenance requires a professional technical team, which is difficult for small and medium-sized enterprises to afford.

[0015] Insufficient network flexibility: Terminal devices need to be registered and configured on the server in advance. Temporary networks (such as those used for wilderness exploration and emergency rescue) cannot respond quickly and require advance planning of the network topology, which severely restricts the efficiency of emergency communication.

[0016] The core bottleneck of existing technology

[0017] None of the above technologies can achieve a balance between low cost, high reliability, and flexible networking:

[0018] Repeater and power amplification solutions are limited by physical layer technology, making it impossible to break through the linear relationship between power and distance, and they lack network-level scheduling capabilities;

[0019] While centralized systems have cross-regional communication capabilities, their architectural complexity and cost increase exponentially with scale, resulting in extremely poor scalability.

[0020] To address the core issues of existing technologies, such as reliance on central servers, insufficient networking flexibility, and high costs, a radio station voice network relay device without a central server is provided. Through a decentralized architecture and distributed collaborative processing, it achieves low-cost, high-reliability, and flexible networking for cross-regional communication. Utility Model Content

[0021] The purpose of this invention is to provide a radio station voice network relay device that does not require a central server. Through a decentralized architecture, it enables flexible networking and efficient transmission of cross-regional voice communication, solving the problems of limited communication distance, reliance on central servers, inflexible networking, and high costs in traditional technologies. This invention is applicable to scenarios such as centralized command of railway operations and emergency rescue.

[0022] To achieve the above objectives, this utility model provides the following technical solution: a serverless radio station voice network relay device, comprising:

[0023] Terminal equipment used for voice input and output;

[0024] An audio processing unit includes an audio interface unit and an audio interface control unit. The audio interface unit is connected to the terminal device and is used for voice signal format conversion. The audio interface control unit is connected to the terminal device and is used for control signal management.

[0025] The core processing unit is connected to the audio interface unit and the audio interface control unit respectively, and is used for voice signal processing and system coordination.

[0026] A network interaction unit, connected to the core processing unit, is used for network transmission relay of voice data;

[0027] The power supply unit provides power to the audio processing unit, the core processing unit, and the network interaction unit.

[0028] As a further improvement to the technical solution of this utility model, it also includes a speech synthesis processing unit, which is connected to the audio interface unit and is used for text-to-speech signal synthesis.

[0029] As a further improvement to the technical solution of this utility model, the terminal device includes a radio or a radio microphone.

[0030] As a further improvement to the technical solution of this utility model, the radio is connected to the audio interface unit via an SP / MIC / PTT line, and the radio is connected to the audio interface control unit via a ZB / PTT line.

[0031] As a further improvement to the technical solution of this utility model, the radio microphone is connected to the audio interface unit via a MIC / SP line, and the radio microphone is connected to the audio interface control unit via a PTT line.

[0032] As a further improvement to the technical solution of this utility model, the audio interface unit is connected to the voice processing unit via an audio line, and the audio interface unit is connected to the core processing unit via an Ai / Ao line.

[0033] As a further improvement to the technical solution of this utility model, the audio interface control unit is connected to the core processing unit via a P-ST / Call line.

[0034] As a further improvement to the technical solution of this utility model, the core processing unit is a DSP central processing unit, which is used to encode and decode the voice signal.

[0035] As a further improvement to the technical solution of this utility model, the network interaction unit is connected to a 4G / 5G, WiFi, or office intranet network to realize unicast broadcasting or multicast relay of voice data.

[0036] As a further improvement to the technical solution of this utility model, the power supply unit is a rechargeable power source used to provide stable power to the audio processing unit, the core processing unit, the network interaction unit, and the speech synthesis processing unit.

[0037] This utility model has the following beneficial effects:

[0038] High reliability:

[0039] Employing a serverless architecture, each unit works autonomously and collaboratively, eliminating the risk of single points of failure. Even if some devices fail, other devices can still maintain communication links, making it particularly suitable for extreme environments such as natural disasters.

[0040] Flexible networking:

[0041] Terminal devices can join or leave the network at any time without the need for complex central server configuration. For example, multiple radio stations can be quickly deployed at emergency rescue sites and networked through network interaction units to meet temporary communication needs.

[0042] Cost-effectiveness:

[0043] This eliminates the costs of hardware procurement, software deployment, and maintenance for a central server, and system expansion only requires adding terminal devices without upgrading the core architecture. The power supply unit uses a rechargeable power source, reducing long-term operating costs.

[0044] High-efficiency speech processing:

[0045] The DSP central processing unit efficiently encodes and decodes voice signals to ensure transmission quality; the voice processing unit supports text-to-speech synthesis to improve the efficiency of standardized information transmission (such as automatic broadcasting of scheduling instructions).

[0046] Compatibility and scalability:

[0047] The standardized interface design (such as SP, MIC, PTT lines) supports access from different brands and models of radios and handheld microphones; the network interaction unit is compatible with multiple communication protocols and can seamlessly connect to existing 4G / 5G, WiFi or office intranet networks, adapting to diverse communication scenarios. Attached Figure Description

[0048] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0049] Figure 1 is a schematic diagram of the system architecture of a central serverless radio station voice network relay device according to this utility model. Detailed Implementation

[0050] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0051] It should be noted that all directional indicators (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0052] In this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination should be considered non-existent and not within the scope of protection claimed by this utility model.

[0054] The present invention will be further described in detail below with reference to the accompanying drawings.

[0055] Reference Figure 1 A serverless radio voice network relay device, comprising:

[0056] Terminal equipment used for voice input and output;

[0057] An audio processing unit includes an audio interface unit and an audio interface control unit. The audio interface unit is connected to the terminal device and is used for voice signal format conversion. The audio interface control unit is connected to the terminal device and is used for control signal management.

[0058] The core processing unit is connected to the audio interface unit and the audio interface control unit respectively, and is used for voice signal processing and system coordination.

[0059] A network interaction unit, connected to the core processing unit, is used for network transmission relay of voice data;

[0060] The power supply unit provides power to the audio processing unit, the core processing unit, and the network interaction unit.

[0061] Specifically, in this embodiment, a voice processing unit is also included. The voice processing unit is connected to the audio interface unit and is used for synthesizing digital signals into voice signals.

[0062] Specifically, in this embodiment, the terminal device includes a radio or a radio microphone.

[0063] Specifically, in this embodiment, the radio is connected to the audio interface unit via an SP / MIC / PTT line, and the radio is connected to the audio interface control unit via a ZB / PTT line.

[0064] Specifically, in this embodiment, the radio microphone is connected to the audio interface unit via a MIC / SP line, and the radio microphone is connected to the audio interface control unit via a PTT line.

[0065] Specifically, in this embodiment, the audio interface unit is connected to the voice processing unit via an audio line, and the audio interface unit is connected to the core processing unit via an Ai / Ao line.

[0066] Specifically, in this embodiment, the audio interface control unit is connected to the core processing unit via a P-ST / Call line.

[0067] Specifically, in this embodiment, the core processing unit is a DSP central processing unit, which is used to encode and decode the speech signal.

[0068] Specifically, in this embodiment, the network interaction unit accesses a 4G / 5G, WiFi, or office intranet network to realize unicast broadcasting or multicast relay of voice data.

[0069] Specifically, in this embodiment, the power supply unit is a rechargeable power source used to provide stable power to the audio processing unit, the core processing unit, the network interaction unit, and the speech synthesis processing unit.

[0070] Example: A serverless radio station voice network relay device includes the following interconnected functional modules:

[0071] Terminal equipment: used for voice input and output, including radio or radio microphones, supporting users to communicate via voice.

[0072] Audio processing unit:

[0073] Audio interface unit: Connects to the terminal device, receives voice signals from the terminal device via SP / MIC / PTT lines, converts them into a digital signal format that the system can process, and transmits them to the core processing unit via Ai / Ao lines; at the same time, it can also transmit the processed audio signals back to the terminal device via MIC / SP lines.

[0074] Audio interface control unit: Connects to the terminal device, receives control signals (such as transmission requests) from the terminal device via ZB / PTT or PTT lines, and interacts with the core processing unit via P-ST / Call lines to coordinate the start and stop of voice transmission.

[0075] Core processing unit: This is the DSP central processing unit, connected to the audio interface unit and audio interface control unit. It encodes and decodes voice signals, generates data formats suitable for network transmission, and coordinates the collaborative work of various units.

[0076] Network Interaction Unit: Connected to the core processing unit, it accesses external networks such as 4G / 5G and WiFi or the office intranet to realize unicast, broadcast or multicast relay of voice data, breaking through the distance limitations of traditional wireless communication.

[0077] Power supply unit: A rechargeable power source that connects to the audio processing unit, core processing unit, network interaction unit, and voice processing unit, providing stable power to ensure continuous operation of each unit.

[0078] Speech synthesis processing unit (optional): Connected to the audio interface unit via an audio line, it is used to convert digital signals into speech signals to realize speech synthesis functions (such as standardized speech broadcasting).

[0079] Connection relationships:

[0080] The radio is connected to the audio interface unit via SP / MIC / PTT lines and to the audio interface control unit via ZB / PTT lines;

[0081] The radio microphone is connected to the audio interface unit via the MIC / SP line and to the audio interface control unit via the PTT line;

[0082] The audio interface unit is connected to the voice processing unit (if present) via an audio line, and to the core processing unit via an Ai / Ao line;

[0083] The audio interface control unit is connected to the core processing unit via a P-ST / Call line;

[0084] The core processing unit accesses the external network through the network interaction unit.

[0085] The following combination Figure 1 The workflow and connection relationships of this utility model are further explained below:

[0086] 1. Voice Input and Signal Conversion

[0087] Users speak through terminal devices, and the voice signal is transmitted to the audio interface unit via the SP / MIC line (radio station) or MIC / SP line (radio hand microphone). The audio interface unit converts the analog voice signal into a digital signal format.

[0088] Control signals from the terminal device (such as a transmit request triggered by the PTT button) are transmitted to the audio interface control unit via the ZB / PTT line (radio station) or the PTT line (radio microphone). The audio interface control unit then sends control commands (such as a "start transmission" signal) to the core processing unit via the P-ST / Call line.

[0089] 2. Voice processing and network relay

[0090] If speech synthesis is required (such as automatic reading of text commands), the audio interface unit transmits digital signals to the speech synthesis processing unit via the audio line. The speech synthesis processing unit generates a synthesized speech signal and then sends it back to the audio interface unit.

[0091] The audio interface unit transmits the processed voice signal to the core processing unit via the Ai / Ao line. The core processing unit encodes and compresses the signal to generate data packets suitable for network transmission.

[0092] The network interaction unit receives data packets and accesses external networks (such as 4G networks) or office intranets, transmitting data to the target terminal device via unicast, broadcast, or multicast.

[0093] 3. Voice output and power supply guarantee

[0094] The receiving terminal device restores the voice signal through the reverse process (network interaction unit → core processing unit → audio interface unit) and outputs it to the user via MIC / SP line or SP / MIC line.

[0095] The power supply unit is a rechargeable power source that provides stable power to the audio processing unit, core processing unit, network interaction unit, and speech synthesis processing unit through an independent power supply line, supporting the device to operate for a long time in outdoor or other scenarios without a fixed power source.

[0096] The working principle of this utility model:

[0097] This invention achieves voice network relay without a central server through the distributed collaboration of terminal equipment, audio processing unit, core processing unit, network interaction unit, and power supply unit. Its core working principle is as follows:

[0098] 1. Acquisition and preprocessing of speech signals

[0099] Input phase: The user speaks through the microphone of the terminal device, and the voice signal is transmitted in analog signal form through the following path:

[0100] Radio station scenario: Voice signals are transmitted to the audio interface unit via the SP / MIC line, and control signals (such as transmit commands triggered by the PTT button) are transmitted to the audio interface control unit via the ZB / PTT line.

[0101] Radio hand microphone scenario: Voice signals are transmitted to the audio interface unit via the MIC / SP line, and control signals are transmitted to the audio interface control unit via the PTT line.

[0102] Preprocessing stage: The audio interface unit converts the analog voice signal into a digital signal (such as PCM format) and removes ambient noise through hardware filtering; the audio interface control unit parses the control signal (such as determining whether the user is in the transmission state) and generates a "transmission enable" command, which is sent to the core processing unit through the P-ST / Call line.

[0103] 2. Digital processing of speech signals

[0104] Encoding and decoding of the core processing unit:

[0105] The digital voice signal enters the DSP central processing unit through the Ai line. First, it undergoes source coding (such as the G.711 compression algorithm) to compress the data rate from 64kbps to 8-16kbps, reducing the network transmission bandwidth usage.

[0106] Then, channel coding is performed, and parity bits are added to enhance the signal's anti-interference capability, generating data packets suitable for network transmission.

[0107] Speech synthesis function (optional):

[0108] If the system needs to convert text commands into speech (such as text notifications issued by the scheduling system), the audio interface unit transmits the digital text signal to the speech synthesis processing unit through the audio line. The TTS engine generates synthesized speech based on the preset speech library, and then sends it back to the audio interface unit through the audio line for subsequent processing.

[0109] 3. Cross-regional network relay and distributed routing

[0110] Access and transmission of network interaction units:

[0111] The core processing unit sends the encoded voice data packets to the network interaction unit via the Ao line, and the latter selects the access method based on the target address:

[0112] Access to operator networks or office intranets (metropolitan area networks) via 4G / 5G modules, and cross-city-level transmission using IP networks;

[0113] Decentralized routing mechanism:

[0114] Without the need for central server scheduling, each terminal device automatically identifies adjacent nodes through the network interaction unit and forwards data packets using flooding or on-demand routing protocols (such as AODV), ensuring dynamic reconstruction of the communication link when nodes move or fail.

[0115] 4. Reconstruction and Output of Speech Signals

[0116] Receiver processing flow:

[0117] The network interaction unit obtains voice data packets from the network, transmits them to the core processing unit via the Ao line, and restores them to the original digital voice signal through channel decoding and source decoding.

[0118] Digital signals are transmitted to the speaker of the terminal device via MIC / SP lines (radio station) or SP / MIC lines (radio hand microphone) to complete voice output.

[0119] Closed-loop feedback of control signals:

[0120] The audio interface control unit feeds back the receiver status (such as "busy tone" or "connection successful") to the core processing unit in real time via the P-ST / Call line, dynamically adjusting the transmission rate or retransmission strategy to ensure communication reliability.

[0121] 5. Power supply guarantee and system stability

[0122] The power supply unit uses a rechargeable lithium battery pack, providing a stable 5V / 12V power supply to each unit through an independent power supply line, and integrates overvoltage protection and temperature monitoring modules.

[0123] When the core processing unit temperature is detected to exceed the threshold, the frequency reduction mechanism is automatically triggered to prevent the DSP from overheating and crashing.

[0124] When the battery is low, a voice prompt (such as "low battery, please charge") is sent to the terminal device through the audio interface unit to ensure task continuity.

[0125] Core innovations in working principle

[0126] Decentralized collaboration mechanism:

[0127] Instead of the traditional star topology of "terminal-server-terminal", a distributed architecture of "terminal-network-terminal" is adopted. Each unit negotiates communication rules autonomously through standardized interfaces (such as Ai / Ao, P-ST / Call lines) without the need for central node scheduling.

[0128] Multimodal communication fusion:

[0129] It also supports cross-domain conversion between analog voice (radio station) and digital signal (network transmission), enabling seamless integration between traditional narrowband communication and broadband networks, and is compatible with existing equipment in industries such as railways.

[0130] In summary, this utility model has the following beneficial effects:

[0131] 1. High reliability: The serverless architecture avoids system paralysis caused by the failure of a central node. In extreme situations such as natural disasters, traditional communication systems that rely on a central server are prone to collapse, while the various parts of this device work together autonomously to maintain smooth communication links and ensure voice transmission.

[0132] 2. High flexibility: It allows for flexible network configuration without the need for complex central server deployment and configuration, making it suitable for various scenarios. Each radio station can join or leave the network at any time without affecting overall operation, enabling rapid response to different communication needs. It also features text-to-speech (TTS) functionality for convenient and standardized speech synthesis.

[0133] 3. Cost-effectiveness: It reduces the construction and maintenance costs of the central server, lowering hardware and software investment. Furthermore, the distributed architecture makes system expansion relatively easy; only terminal equipment such as radios needs to be added, without requiring large-scale upgrades to the central server, resulting in excellent cost-effectiveness.

[0134] 4. High-efficiency voice processing: Through the coordinated operation of the audio interface unit, TTS unit, and DSP central processing unit, efficient acquisition, processing, encoding, decoding, and synthesis of voice signals can be achieved, ensuring voice quality and transmission efficiency, and improving the user's communication experience. Network transmission extension enables convenient mobile and distance-unrestricted voice transmission for single-end or dual-end radios.

[0135] 5. Good compatibility: The connections of each component of the device are clearly defined and the interfaces are clearly defined, making it easy to be compatible with different types of radios, hand microphones and other equipment. It can integrate various communication equipment resources to build diverse communication networks.

[0136] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A serverless radio station voice network relay device, characterized in that, include: Terminal equipment used for voice input and output; An audio processing unit includes an audio interface unit and an audio interface control unit. The audio interface unit is connected to the terminal device and is used for voice signal format conversion. The audio interface control unit is connected to the terminal device and is used for control signal management. The core processing unit is connected to the audio interface unit and the audio interface control unit respectively, and is used for voice signal processing and system coordination. A network interaction unit, connected to the core processing unit, is used for network transmission relay of voice data; The power supply unit provides power to the audio processing unit, the core processing unit, and the network interaction unit.

2. The serverless radio station voice network relay device according to claim 1, characterized in that: It also includes a speech synthesis processing unit, which is connected to the audio interface unit and is used for text-to-speech signal synthesis.

3. The serverless radio station voice network relay device according to claim 1, characterized in that: The terminal equipment includes a radio station or a radio microphone.

4. The serverless radio station voice network relay device according to claim 3, characterized in that: The radio is connected to the audio interface unit via an SP / MIC / PTT line, and the radio is connected to the audio interface control unit via a ZB / PTT line.

5. A serverless radio station voice network relay device according to claim 3, characterized in that: The radio microphone is connected to the audio interface unit via a MIC / SP line, and the radio microphone is connected to the audio interface control unit via a PTT line.

6. A serverless radio station voice network relay device according to claim 2, characterized in that: The audio interface unit is connected to the speech synthesis processing unit via an audio line, and the audio interface unit is connected to the core processing unit via an Ai / Ao line.

7. A serverless radio station voice network relay device according to claim 1, characterized in that: The audio interface control unit is connected to the core processing unit via a P-ST / Call line.

8. A serverless radio station voice network relay device according to claim 1, characterized in that: The core processing unit is a DSP central processing unit, which is used to encode and decode speech signals.

9. A serverless radio station voice network relay device according to claim 1, characterized in that: The network interaction unit connects to 4G / 5G, WiFi, or office intranet networks to enable unicast broadcasting or multicast relay of voice data.

10. A serverless radio station voice network relay device according to claim 2, characterized in that: The power supply unit is a rechargeable power source used to provide stable power to the audio processing unit, core processing unit, network interaction unit, and speech synthesis processing unit.

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