CN115412190A - Voice communication system of very high frequency data exchange system and implementation method - Google Patents
Voice communication system of very high frequency data exchange system and implementation method Download PDFInfo
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- CN115412190A CN115412190A CN202211028681.3A CN202211028681A CN115412190A CN 115412190 A CN115412190 A CN 115412190A CN 202211028681 A CN202211028681 A CN 202211028681A CN 115412190 A CN115412190 A CN 115412190A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/71—Wireless systems
- H04H20/74—Wireless systems of satellite networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18523—Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service
- H04B7/18526—Arrangements for data linking, networking or transporting, or for controlling an end to end session
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
- H04H20/62—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast for transportation systems, e.g. in vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
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Abstract
The invention discloses a voice communication system of a very high frequency data exchange system and a realization method thereof, which are applicable to a VDES satellite system and comprise a voice input/play unit, a voice message sending unit and a voice message sending unit, wherein the voice input/play unit is used for receiving voice input of a user or playing voice information contents; the message processing unit is used for packaging the voice information input by the user into a voice data packet; or analyzing the received voice data packet into voice information; and the message receiving and sending unit is used for sending or receiving the voice data packet. According to the scheme provided by the invention, the voice recording equipment is configured on the VDES equipment, and the voice is rapidly acquired, compressed and transmitted after being acquired, so that the efficiency can be greatly improved, the voice transmission efficiency can be greatly improved in an emergency, and the safety and the emergency in the navigation of the ship can be improved. Meanwhile, characters for distinguishing message types are added in the messages, so that the types of the messages can be enriched, and more convenience is provided for ship navigation.
Description
Technical Field
The invention relates to the technical field of satellite communication, in particular to a voice communication system of a very high frequency data exchange system and an implementation method.
Background
The VDES (very high frequency Data Exchange System) is an enhanced and upgraded System of an Automatic Identification System (AIS) of a ship, integrates the existing AIS function, adds a special Application message (ASM) and a broadband very high frequency Data Exchange (VDE) function, can effectively relieve the pressure of the existing AIS Data communication, meets the requirements of all Data Exchange services among ship-to-ship, ship-to-shore, ship-to-satellite and shore-to-satellite, and belongs to a third-generation maritime communication System.
With the increasing demand for data communication over water, AIS is also increasingly tasked with ship-shore data communication. The increased demand for AIS communications in the VHF band has resulted in significant congestion in the AIS usable band, and many busy ports have reached over 50% occupancy of the band. The world radio communication conference (WRC-15) of the international telecommunication union 2015 decided to introduce a very high frequency data exchange system (VDES) in the field of marine mobile services. The VDES integrates AIS, special application message (ASM) and broadband very high frequency data exchange (VDE), and can comprehensively strengthen the data transmission capability of ship communication by introducing the ASM and the VDE on the basis of protecting the existing AIS function.
China is a big ocean country, and 90% of goods at import and export are transported by sea, so the safety and communication of sea traffic are of great importance. In the process of maritime communication, short-distance communication which is only satisfied within a certain range is not enough, and the requirement for establishing a maritime base station communication network is more and more clear.
In the ship sailing process, in order to increase the practicability and richness of the VDE message, a voice VDE message and a picture VDE message can also be used. The voice VDE message and the picture VDE message can be properly used by a special compression method and an identifier.
The conventional message data packet in the conventional VDES message does not contain the identification bit, so that the conventional message can only transmit text messages and cannot transmit non-text information such as pictures, files or sound. In addition, the conventional VDES device does not include a voice recording device.
Disclosure of Invention
The invention provides a voice communication system of a very high frequency data exchange system and an implementation method thereof, which can quickly acquire, compress and send voice messages through a VDES terminal, greatly simplify programs and improve efficiency.
According to an aspect of the present invention, there is provided a very high frequency data exchange system voice communication system, comprising,
the voice input/play unit is used for receiving the voice input of a user or playing the voice information content;
the message processing unit is used for packaging the voice information input by the user into a voice data packet; or analyzing the received voice data packet into voice information;
and the message receiving and sending unit is used for sending or receiving the voice data packet.
The voice input/play unit specifically includes:
the voice input subunit is used for coding the voice input of the user into voice information and sending the voice information to the message processing unit;
and the voice playing subunit is used for restoring the voice information sent by the message processing unit into a voice signal and playing the voice signal.
The message processing unit specifically includes:
and the data length cutting subunit is used for cutting the voice information into data lengths meeting the system requirements and respectively generating voice data packets.
The message processing unit specifically includes:
and the voice identification subunit is used for adding a file type flag bit for distinguishing the type of the data packet into the voice data packet.
The message processing unit specifically includes:
the voice message replying subunit is used for restoring the received voice data packet into voice messages; and the voice data obtained by recovering a plurality of voice data packets which are correlated with each other are merged.
The message processing unit specifically includes:
and the identification subunit is used for identifying the file type zone bit in the received data packet and classifying the data packet with the file type zone bit indicating as the voice data packet into the voice data packet.
According to another aspect of the present invention, a method for implementing voice communication in a very high frequency data exchange system is provided, where the system specifically includes:
a sending end receives user voice input and codes the user voice input into voice information; packaging the voice information into a voice data packet; the voice data packet comprises a file type flag bit for distinguishing the type of the data packet; wirelessly transmitting the voice data packet;
and after receiving the voice data packet, the receiving end determines the type of the voice data packet according to the file type flag bit, restores the voice data packet into voice information and plays the voice information to a user.
The method further comprises the following steps:
the number and the length of the voice data packets are calculated and generated according to the total length division; the voice data packets associated with each other can be merged and recovered as continuous voice information at the receiving end.
The method further comprises the following steps:
the file type flag bit is arranged at the first data bit of the voice data packet data part; and the receiving end determines the type of the voice data packet according to the file type flag bit.
The method further comprises the following steps:
the file type zone bit respectively identifies text information, file information, image information or voice information by different contents.
The technical scheme of the invention provides a voice communication scheme of a very high frequency data exchange system, which is suitable for a VDES satellite system and comprises a voice input/play unit, a voice message receiving unit and a voice message playing unit, wherein the voice input/play unit is used for receiving voice input of a user or playing voice message contents; the message processing unit is used for packaging the voice information input by the user into a voice data packet; or analyzing the received voice data packet into voice information; and the message receiving and sending unit is used for sending or receiving the voice data packet.
In the scheme provided by the invention, the first data content in the conventional message sentence is used as the message type and is divided into text, characters, pictures and sound messages. And then, the voice recording equipment is directly placed on the VDES terminal, the voice is converted into a VDES message through the VDES terminal, and the message is sent out in a broadcast mode.
The invention can configure the voice recording equipment on the VDES equipment, and can greatly improve the efficiency by quickly acquiring, compressing and sending the voice after acquiring, thereby greatly improving the voice transmission efficiency in emergency situations and improving the safety and the emergency of the ship in navigation. Meanwhile, characters for distinguishing message types are added in the messages, so that the types of the messages can be enriched, and more convenience is provided for ship navigation.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a voice communication system of a very high frequency data switching system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a VDES device with voice capture and transmission functions according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a method for implementing voice communication in a vhf data exchange system in an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The VDES message does not contain any relevant explanation for the contents of the voice and audio messages, so that the VDES message only needs to conform to the format of the conventional message packet in the VDE message. The voice input device is connected to a computer (called an upper computer for short) which sends a control command to a ship berth on the ship, so that the voice input function can be realized. Corresponding voice input software is installed through the shipway end, voice is input through voice input equipment connected with the shipway, messages are converted through the software, and then the messages are sent out by clicking a sending button of the software.
Fig. 1 is a schematic structural diagram of a voice communication system of a vhf data exchange system according to an embodiment of the present invention. As shown in fig. 1, in which,
and a voice input/play unit 11 for receiving a user voice input or playing a voice information content.
The voice input/play unit 11 is actually a device that contacts the user to receive the voice input of the user, and aims to obtain the voice input of the user or convert the voice signal into voice to play to the user.
At the transmitting end, the voice input/play unit 11 receives a voice input of a user. At the receiving end, the voice input/play unit 11 converts the received voice information into audio output. Specifically, the method comprises the following steps:
a voice input subunit, configured to encode a voice input of a user into voice information and send the voice information to the message processing unit;
and the voice playing subunit is used for restoring the voice information sent by the message processing unit into a voice signal and playing the voice signal.
A message processing unit 12, configured to package voice information input by a user into a voice data packet; or parsing the received voice data packet into voice information.
The message processing unit 12 is a core function implementation unit of this embodiment, and is used for generating or parsing a voice data packet. Specifically, all or part of the following functions may be included:
and the data length cutting subunit is used for cutting the voice information into data lengths meeting the system requirements and respectively generating voice data packets.
And the voice identification subunit is used for adding a file type flag bit for distinguishing the type of the data packet into the voice data packet.
And the voice identification subunit is used for adding a file type flag bit for distinguishing the type of the data packet into the voice data packet.
And the identification subunit is used for identifying the file type zone bit in the received data packet and classifying the data packet with the file type zone bit indicating as the voice data packet into the voice data packet.
Setting the first data bit in the data packet as a file type flag bit, wherein 0 is text information, 1 is file information, 2 is image information, and 3 is voice information. When the VDES device transmits the message to the corresponding upper computer, the upper computer reads the first character of the data packet and analyzes the first character according to the corresponding content.
And the message receiving and sending unit 13 is configured to send or receive the voice data packet.
The scheme takes the first data content in the conventional message sentence as the message type and distinguishes the message type into text, characters, pictures and sound messages. And then the voice recording equipment is directly placed on the VDES terminal, the voice is converted into a VDES message through the VDES terminal, and the message is sent out in a broadcast mode.
Meanwhile, the voice recording equipment is configured on the VDES equipment, and the voice is rapidly collected, compressed and sent after being collected, so that the efficiency can be greatly improved, the voice transmission efficiency can be greatly improved under emergency conditions, and the safety and the emergency of the ship in navigation are improved. Meanwhile, characters for distinguishing message types are added in the messages, so that the types of the messages can be enriched, and more convenience is provided for ship navigation.
As shown in fig. 2, a schematic diagram of a VDES device with voice capture and transmission functions according to an embodiment of the present invention is shown, wherein a voice input device and a corresponding operation button are added to a VDES terminal.
VDES conventional messages use a VDE channel through a packet with a packet header of $ VEEDM characters. All data formats are:
$VEEDM,<seq_nr>,<source_mmsi>,<dest_mmsi>,<data>,<fill_bits>*<HH><CR><LF>
wherein, VEEDM is data packet header, which indicates that the message format is EDM message.
seq _ num is the sequence number of the packet, i.e. determines the order of a plurality of data packets.
Source _ mms is the sender's mms.
dest _ mmsi is the receiver's mmsi, and when the receiver's message is empty, it indicates that the message is a broadcast message, and anyone in the vicinity can receive and parse the message.
The data is data carried by the data packet. The conventional message only supports text messages, and the message is sent in 6-bit ASCII code format and needs to be converted into conventional characters during parsing.
The fill _ bits is a data fill bit, and since the message needs to be displayed using 6-bit ASCII code, the length of the binary message needs to be a multiple of 6, so when the bit number of the binary data is not a multiple of 6, the binary message will be automatically complemented by a multiple of 0 to 6.
And the < CR > < LF > is a check bit, a check code is calculated according to cyclic redundancy check after the message is automatically generated, the check code is also calculated according to the content of the message after the message is received by the receiver, the message is judged to be normal when the two check codes are the same, otherwise, the message is judged to be wrong, the VDES terminal automatically discards the message and does not use the message, and the upper computer cannot receive the message.
The device sets the first data bit in the data packet as a file type, 0 is text information, 1 is file information, 2 is image information, and 3 is voice information. When the VDES device transmits the message to the corresponding upper computer, the upper computer reads the first character of the data packet and analyzes the first character according to the corresponding content.
The VDES device is provided with a 'record voice' button, recording can be carried out after the 'record voice' button is pressed, and the recording is finished after the button is pressed again. The VDES terminal saves the recorded voice as a voice format file. The VDES terminal converts the voice file into a voice message data packet corresponding to the VDES and broadcasts the voice message data packet through a VDE channel, the number of data packets of the conventional message data packet and the length of each data packet are automatically divided and calculated according to the overall length, and the MMSI of the receiving party is empty, namely the broadcast message.
The VDES terminal is provided with a voice input device and also has conversion and transmission functions. All functions can be separated from the shipborne upper computer for independent use.
When receiving message, the VDES terminal of the receiving party first determines whether the check code is correct. If the message is correct, the VDES terminal adopts the message and forwards the message to an upper computer connected with the message. The host computer judges the head of a data packet in the message, and judges the type of the message according to the head character, wherein the type of the message is a text, a file, a picture or a sound. And then the analysis is performed according to the corresponding mode.
Fig. 3 is a schematic diagram illustrating a principle of a voice communication implementation method of a vhf data exchange system according to a second embodiment of the present invention, which is based on the voice communication system according to the first embodiment, wherein,
In one embodiment of the invention, the number and the length of the voice data packets are calculated and generated according to overall length division; the voice data packets associated with each other can be merged and recovered as continuous voice information at the receiving end.
The file type flag bit is arranged at a first data bit of the voice data packet data part; and the receiving end determines the type of the voice data packet according to the file type flag bit.
The file type zone bit respectively identifies text information, file information, image information or voice information by different contents.
In summary, the technical solution of the present invention provides a voice communication scheme for a vhf data exchange system, which is suitable for a VDES satellite system, and first data content in a conventional message sentence is used as a message type, and is divided into text, picture and voice message. And then the voice recording equipment is directly placed on the VDES terminal, the voice is converted into a VDES message through the VDES terminal, and the message is sent out in a broadcast mode.
The invention can configure the voice recording equipment on the VDES equipment, and can greatly improve the efficiency by quickly acquiring, compressing and sending the voice after acquiring, thereby greatly improving the voice transmission efficiency in emergency situations and improving the safety and the emergency of the ship in navigation. Meanwhile, characters for distinguishing message types are added in the messages, so that the types of the messages can be enriched, and more convenience is provided for ship navigation.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A very high frequency data exchange system voice communication system, comprising,
the voice input/play unit is used for receiving the voice input of a user or playing the voice information content;
the message processing unit is used for packaging the voice information input by the user into a voice data packet; or analyzing the received voice data packet into voice information;
and the message receiving and sending unit is used for sending or receiving the voice data packet.
2. The voice communication system of claim 1, wherein the voice input/play unit specifically comprises:
the voice input subunit is used for coding the voice input of the user into voice information and sending the voice information to the message processing unit;
and the voice playing subunit is used for restoring the voice information sent by the message processing unit into a voice signal and playing the voice signal.
3. The voice communication system of claim 1, wherein the message processing unit specifically comprises:
and the data length cutting subunit is used for cutting the voice information into data lengths meeting the system requirements and respectively generating voice data packets.
4. The voice communication system of claim 1, wherein the message processing unit specifically comprises:
and the voice identification subunit is used for adding a file type flag bit for distinguishing the type of the data packet into the voice data packet.
5. The voice communication system of claim 1, wherein the message processing unit specifically comprises:
the voice message replying subunit is used for restoring the received voice data packet into voice messages; and the voice data obtained by recovering a plurality of voice data packets which are correlated with each other are merged.
6. The voice communication system of claim 1, wherein the message processing unit specifically comprises:
and the identification subunit is used for identifying the file type zone bit in the received data packet and classifying the data packet with the file type zone bit indicating as the voice data packet into the voice data packet.
7. A method for implementing voice communication in a vhf data exchange system, based on the system of any one of claims 1 to 6, comprising:
a sending end receives user voice input and codes the user voice input into voice information; packaging the voice information into a voice data packet; the voice data packet comprises a file type flag bit for distinguishing the type of the data packet; wirelessly transmitting the voice data packet;
and after receiving the voice data packet, the receiving end determines the type of the voice data packet according to the file type flag bit, restores the voice data packet into voice information and plays the voice information to a user.
8. The method for implementing cross-site communication in VHF data switching system according to claim 7, further comprising:
the number and the length of the voice data packets are calculated and generated according to the total length division; the voice data packets associated with each other can be merged and recovered as continuous voice information at the receiving end.
9. The method for implementing cross-site communication in VHF data switching system according to claim 7, further comprising:
the file type flag bit is arranged at the first data bit of the voice data packet data part; and the receiving end determines the type of the voice data packet according to the file type flag bit.
10. The method for implementing cross-site communication in VHF data switching system according to claim 7, further comprising:
the file type zone bit respectively identifies text information, file information, image information or voice information with different contents.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117749330A (en) * | 2024-02-19 | 2024-03-22 | 天津讯联科技有限公司 | VDES satellite-ground link data retransmission processing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117749330A (en) * | 2024-02-19 | 2024-03-22 | 天津讯联科技有限公司 | VDES satellite-ground link data retransmission processing method |
| CN117749330B (en) * | 2024-02-19 | 2024-05-03 | 天津讯联科技有限公司 | VDES satellite-ground link data retransmission processing method |
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