Calling method and system for automatic connection communication, electronic equipment and storage medium

Abstract

The invention provides a calling method and system for automatic connection communication, electronic equipment and a storage medium, and relates to the technical field of communication. The call message is sent on each call frequency, and the qualified call frequency is further obtained according to the affirmative response message, so that automatic communication verification of each call frequency is realized, manual selection of the call frequency is avoided, and a user can be ensured to have a good communication verification effect under special conditions such as emergency or distress. And the automatic connection communication call can be smoothly completed, and the channel determination efficiency of the GMDSS is improved. According to the invention, the acknowledgement message is sent only after the specified number of call messages are checked to be qualified, so that the accuracy of the qualified call frequency is ensured, and the accuracy of ACS communication is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a call method and system for automatically connecting communication, an electronic device and a storage medium. BACKGROUND

[0002] In the current Global Maritime Distress and Safety System (GMDSS) system, the ship medium frequency (MF) and high frequency (HF) communication equipment is an important part that cannot be separated, and the use frequency range of the medium-high frequency communication equipment is 2MHz-30MHz. The electromagnetic wave of the medium-high frequency band has the advantages of long communication distance, strong invulnerability, low operation cost, and simple equipment installation. The communication effect of the ship medium-high frequency equipment is obviously affected by the high noise level of the atmosphere, day and night time, weather and season. Therefore, in different seasons, different weather conditions, and different sea areas, it is particularly important to select the appropriate medium-high frequency voice and distress call channel in the first time for the ship remote distress alarm.

[0003] In view of the environmental dependence problem of medium-high frequency communication, the existing GMDSS has provided basic support through standardized frequency band division and fixed channel configuration. For example, the HF band presets multiple distress and safety call frequencies (such as 4207.5kHz, 6312kHz, etc.). The MF band specifies the core distress channel of 2187.5kHz, and the International Maritime Organization (IMO) formulates the GMDSS Manual to guide the ship to select the matching channel according to the navigation area. In addition, part of the ship communication equipment integrates a basic environmental parameter database, or manually inputs the sea area code to assist the operator to screen and recommend the frequency band. These technologies have standardized the medium-high frequency communication process to a certain extent, and reduced the complexity of manual frequency selection.

[0004] Although the existing GMDSS provides a standardized medium-high frequency communication framework, its core frequency selection logic still highly depends on manual experience and operation. Specifically, the current equipment can only provide a static preset frequency band list or a simple environment-related suggestion (such as “prefer to use a certain frequency band at night”). However, in the process of maritime communication, various environmental factors change complexly, and the judgment error of the call frequency is large. At the same time, in the sudden distress scene of the ship, the operator needs to spend extra time to judge the environmental conditions and manually select the channel, which not only increases the risk of misoperation (such as selecting the wrong frequency band to cause the signal to be unable to effectively spread), but also may delay the golden window period of the distress alarm, which will reduce the reliability and emergency response efficiency of the GMDSS in complex scenarios. Therefore, in the existing GMDSS, the manual selection of the channel is low in efficiency. SUMMARY

[0005] The application provides a call method and system for automatically connecting communication, an electronic device and a storage medium, to solve the low efficiency of manual channel selection of the GMDSS system in the prior art, and to improve the efficiency of GMDSS channel determination.

[0006] The application provides a call method for automatically connecting communication, applied to an ACS caller of an automatic connection system, comprising the following steps of: When receiving identification data and a communication type of an ACS callee input by a user, a specified number of call messages are sequentially generated, and each call message is sequentially sent to the ACS callee on each call frequency; After sending the specified number of call messages, it is determined that one round of ACS call is completed, a positive response message sent by the ACS callee is acquired, a qualified call frequency is acquired based on the positive response message, and data is sent to the ACS callee based on the qualified call frequency; the positive response message is sent by the ACS callee after confirming that the specified number of call messages are received and checked to be qualified.

[0007] According to the call method for automatically connecting communication provided by the application, the specified number of call messages are sequentially generated, comprising the following steps of: searching for a current call frequency; generating a call message of the current call frequency based on the current call frequency, identification data of the ACS callee, a communication type, a position of the ACS caller, identification data of the ACS caller and a current sequential transmission number; the searched next call frequency is taken as the current call frequency, the current sequential transmission number is reduced by 1, and the step of generating a call message of the current call frequency based on the current call frequency, the identification data, the communication type, the position of the ACS caller and the current sequential transmission number is executed until the specified number of call messages are generated or until the current sequential transmission number becomes zero; when the first current call frequency is searched, the current sequential transmission number is an initial number.

[0008] According to the call method for automatically connecting communication provided by the application, after it is determined that one round of ACS call is completed, the method further comprises the following steps of: starting a waiting timer, when the waiting time exceeds a set time length and no response message is received, re-executing one round of ACS call; when the set number of rounds of ACS call are continuously executed and no response message is received, determining that the ACS call fails; when the positive response message is received within the set time length or within the set number of rounds, recording the qualified call frequency in the positive response message.

[0009] This invention also provides a calling method for automatic connection communication, applied to the called party in an automatic connection system (ACS), comprising: On each call frequency, the ACS calling party receives each call message sent by the calling party; each call message is generated sequentially by the ACS calling party after receiving the identification data and communication type of the ACS called party input by the user. Once the received specified number of call messages are confirmed to be valid, an affirmative response message is sent to the ACS calling party so that the ACS calling party can obtain a valid call frequency based on the affirmative response message. The valid call frequency is used by the ACS calling party to send data to the ACS called party.

[0010] According to the automatic connection communication call method provided by the present invention, a specified number of call messages are confirmed to have been received based on the following method: Upon receiving the first call message, record the remaining reception time and the current sequential transmission count; When the next call message is received, the remaining reception time is updated until the updated remaining reception time is 0, or until the recorded current sequential transmission count is zero, confirming that the specified number of call messages have been received. The updated remaining reception time is determined based on the current sequential transmission count and the reception time of one call message, and the reception time of each call message is the same.

[0011] According to the automatic connection communication call method provided by the present invention, checking a specified number of call messages for validity includes: Check the communication type carried by a specified number of call messages; When the communication type is applicable to the ACS called party, check the call frequency carried in each call message; When a call message carries a call frequency that is applicable to the ACS called party, a specified number of call messages are determined to be qualified, and the call frequency carried by the call message is taken as the qualified call frequency.

[0012] According to the automatic connection communication call method provided by the present invention, after confirming that a specified number of received call messages are qualified, an affirmative response message is sent to the ACS calling party, including: When the number of qualified call frequencies is greater than 1, all qualified call frequencies are sorted based on the signal reception quality of the call messages on the qualified call frequencies. Based on the sorting results, an affirmative response message is sent to the ACS caller on at least one qualified call frequency with good signal reception quality.

[0013] The automatic connection communication call method provided by the present invention, after confirming that a specified number of call messages have been received, further includes: When the communication type is not suitable for the ACS called party, it is determined that the specified number of call messages are unqualified; or when the communication type is suitable for the ACS called party, but all call frequencies carried by the call messages are not suitable for the ACS called party, it is determined that the specified number of call messages are unqualified; Based on the good or bad of the signal receiving quality of each call message, the call frequencies carried by each call message are sorted; According to the sorting result, a negative response message is sent to the ACS calling party on at least one call frequency with good signal receiving quality.

[0014] The application also provides a call system for automatically connecting communication, comprising an ACS calling party and an ACS called party: The ACS calling party is used for generating a specified number of call messages in sequence when receiving the identification data of the ACS called party and the communication type input by a user, and sending each call message to the ACS called party on each call frequency in sequence; and determining that a round of ACS call is completed when the specified number of call messages are sent. The ACS called party is used for receiving each call message on each call frequency in sequence; and sending a positive response message to the ACS calling party when confirming that the specified number of call messages are received and checking that the specified number of call messages are qualified. The ACS calling party is used for obtaining qualified call frequencies based on the positive response message, so as to send data to the ACS called party based on the qualified call frequencies.

[0015] The application also provides a call system for automatically connecting communication, comprising at least one transceiving communication device located on a coast and at least one transceiving communication device located on a ship, each transceiving communication device can communicate with each other, and each transceiving communication device can execute any one of the call methods for automatically connecting communication.

[0016] The application also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to realize any one of the call methods for automatically connecting communication.

[0017] The application also provides a non-transitory computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize any one of the call methods for automatically connecting communication.

[0018] The application provides a call method and system for automatically connecting communication, an electronic device and a storage medium. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0020] Figure 1 Fig. 1 is one of flow diagrams of the call method for automatically connecting communication provided by the application.

[0021] Figure 2 Fig. 2 is another of flow diagrams of the call method for automatically connecting communication provided by the application.

[0022] Figure 3 Fig. 3 is a third of flow diagrams of the call method for automatically connecting communication provided by the application.

[0023] Figure 4 Fig. 4 is a fourth of flow diagrams of the call method for automatically connecting communication provided by the application.

[0024] Figure 5 Fig. 5 is a fifth of flow diagrams of the call method for automatically connecting communication provided by the application.

[0025] Figure 6 Fig. 6 is a structural diagram of the call system for automatically connecting communication provided by the application.

[0026] Figure 7 Fig. 7 is a structural diagram of the electronic device provided by the application. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this 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 this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0028] An Automatic Connection System (ACS) refers to the automatic connection function for shore-to-ship, ship-to-shore, or ship-to-ship communications on the medium frequency (MF) and high frequency (HF) bands of maritime mobile services, using digital selective calling (DSC) at the most suitable operating frequency (or channel). In other words, the ACS function is implemented via digital selective calling (DSC) on the MF and HF bands.

[0029] In maritime communications, ACS communications have a "normal" priority level and can be used for ship-to-shore and ship-to-ship communications, excluding distress and safety communications.

[0030] Unless the equipment is transmitting, this procedure must not interrupt reliable 24-hour watchkeeping based on the appropriate DSC distress alarm frequency. The implementation of ACS will ensure that the shipboard radio has simple and reliable access to the required radio link.

[0031] The calling frequencies used by ACS are 2174.5kHz, 4177.5kHz, 6268kHz, 8376.5kHz, 12520kHz, and 16695kHz.

[0032] The subsequent communication frequency and mode of an ACS call are determined by the communication mode field in the ACS call message. For example, if the communication mode is J3E (single sideband suppressed carrier telephone), then the subsequent communication frequency is the radiotelephone operating frequency.

[0033] The ACS device scans all six ACS call frequencies within two seconds of each cycle. When a DSC point pattern is detected, the scanning on that call frequency is paused and the received signal is decoded. Standard scanning resumes when the identifier of the received signal is not addressed to its own station or the sequential transmission of the remaining call messages is not completed.

[0034] ACS can quickly select the communication channel with the best communication quality, thereby providing ships with better maritime safety information and distress and rescue information, and protecting the lives and property of ships and crew.

[0035] The following is combined with Figures 1-7 The present invention describes an automatic connection communication calling method, system, and electronic device.

[0036] Figure 1 This is one of the flowcharts illustrating the automatic connection communication call method provided by the present invention, such as... Figure 1 As shown, the automatic connection communication calling method is applied to the calling party of the automatic connection system ACS, including steps S100 to S400, each step in detail as follows.

[0037] S100: When the user inputs the identification data and communication type of the ACS called party, a specified number of call messages are generated in sequence, and each call message is sent to the ACS called party in sequence on each call frequency.

[0038] This invention applies to maritime communications, such as the automatic connection communication between medium and high frequency shore stations in GMDSS. Optionally, the ACS calling party is an ACS ship radio station, and the ACS called party is an ACS shore radio station. Alternatively, the ACS calling party is an ACS shore radio station, and the ACS called party is an ACS ship radio station. Or, the ACS calling party is ACS ship radio station 1, and the ACS called party is ACS ship radio station 2. The ACS shore radio station includes a station located on the coast with ACS functionality. The ACS ship radio station includes a station located on a ship with ACS functionality.

[0039] When neither the ACS calling party nor the ACS called party receives a user-specified or response message, they are simultaneously in an automatic channel scanning state on the six ACS calling frequencies and a DCS watch state on the pre-alarm frequency, to ensure the terminal's 24-hour reliable watch function requirement based on the appropriate DSC distress alarm frequency.

[0040] ACS scanning refers to the rapid spectrum inspection and measurement performed by communication transceivers (e.g., ACS calling or ACS called) on adjacent or nearby frequency points to assess or optimize the current reception quality, in order to determine whether they are being interfered with by strong signals from adjacent channels, whether it is necessary to adjust the receiving frequency / filter bandwidth, or switch antennas and filter banks.

[0041] DSC monitoring refers to the continuous 24-hour monitoring of the call frequencies of a dedicated DSC on communication transceiver equipment. Upon detecting a valid DSC call frame (e.g., distress alarm, emergency, security, or routine call), it immediately decodes, alarms, displays call information, and automatically switches to the appropriate subsequent communication method (e.g., voice / telephone) or prompts for manual handling. For MF / HF equipment, maintaining continuous monitoring on the distress / security frequencies of the DSC is one of the basic requirements of GMDSS. The call frequencies of the dedicated DSC include 2187.5kHz, 4207.5kHz, 6312.0kHz, 8414.5kHz, 12577.0kHz, and 16804.5kHz.

[0042] The ACS recipient's identification data includes the ACS recipient's Maritime Mobile Service Identity (MMSI). The MMSI is used to identify the ACS ship radio station.

[0043] The ACS calling party includes an ACS calling terminal and ACS calling equipment. The ACS calling terminal includes a server. The ACS calling equipment includes transceiver equipment, such as a ship-type medium-high frequency transceiver radio 1. The ACS called party includes an ACS called terminal and ACS called equipment. The ACS called terminal includes a server. The ACS called equipment includes transceiver equipment, such as a ship-type medium-high frequency transceiver radio 2.

[0044] A call message is a digital control message sent by the calling party in the ACS (Autonomous Communication System) to initiate a communication connection. It uses structured data to identify the address, communication type, and priority of the called party in the ACS, and negotiates the communication parameters (such as communication frequency bands) for subsequent services, thereby achieving automatic connection establishment before voice / data transmission.

[0045] The ACS calling operator enters the MMSI of the called party through the ACS calling terminal, selects the communication type, and then initiates the ACS call.

[0046] After receiving the ACS caller's identification data and communication type from the ACS called party, the ACS calling terminal immediately stops the current ACS scan and generates a specified number of call packets based on the received identification data and communication type, thus generating call packets for each call frequency. The specified number includes the number of call frequencies. For example, if the number of call frequencies is 6, then 6 call packets are generated.

[0047] The ACS calling terminal sequentially transmits each call message to the ACS calling device (e.g., a shipboard medium-high frequency transceiver radio). Then, through the ACS calling device's radio frequency (RF) antenna, it sequentially sends the call message corresponding to each call frequency to the ACS called party. During call message transmission, the ASC calling party stops ACS scanning.

[0048] When the ACS calling party sends call messages on 6 calling frequencies, the call execution time on each calling frequency can be the same.

[0049] S200: After sending a specified number of call messages, determine that one round of ACS call is completed, obtain the positive response message sent by the ACS called party, obtain the qualified call frequency based on the positive response message, and send data to the ACS called party based on the qualified call frequency.

[0050] A positive response message is sent by the ACS called party to the ACS after acknowledging receipt of a specified number of call messages and verifying that the specified number of call messages are valid.

[0051] After the call messages on 6 (specified number) call frequencies are sent in sequence, the ACS calling party confirms that one round of ACS call has been completed, and the ACS calling party returns to the ACS scan and receive state and DSC monitoring.

[0052] When the called party in the ACS receives the first call message, it starts timing and calculates the number of remaining call messages and the remaining waiting time. When the called party's ACS confirms that the number of remaining call messages is zero, or the remaining waiting time is zero, it determines that the specified number of call messages have been received and that one round of ACS call message reception has been completed.

[0053] The ACS called party checks each call message and decides whether to accept or reject this round of ACS calls based on the check results. Optionally, after completing a round of ACS call message reception, the ACS called party checks each call message according to a pre-set verification procedure and chooses to accept or reject the ACS call based on the check results. When the ACS called party chooses to accept the ACS call, it sends an affirmative response message to the ACS calling party. When the ACS called party chooses to reject the ACS call, it sends a negative response message to the ACS calling party, or does not send a response message.

[0054] After the ACS calling party confirms the completion of an ACS call round, it performs an ACS scan and DSC monitoring. When the ACS calling party receives a positive response message, it identifies the qualified call frequency within the message. Subsequently, it sends data to the ACS called party using that qualified call frequency.

[0055] The automatic connection communication call method provided in this invention is applied to the called party in an ACS (Autonomous Communication System). By sending call messages on various call frequencies and further obtaining qualified call frequencies based on positive response messages, it achieves automatic communication verification for each call frequency, avoiding manual selection of call frequencies. This ensures that users can successfully complete automatic connection communication calls even in emergency situations or dangerous circumstances, improving the efficiency of GMDSS (Government Communication Management System) channel determination. This invention ensures the accuracy of qualified call frequencies by checking a specified number of qualified call messages before sending positive response messages, thereby improving the accuracy of ACS communication.

[0056] Based on the above embodiments, a specified number of call messages are generated sequentially, including: Search for current call frequencies; Based on the current call frequency, the ACS called party's identification data, the communication type, the ACS calling party's location, the ACS calling party's identification data, and the current sequential transmission count, a call message for the current call frequency is generated. The next call frequency found is used as the current call frequency, and the current sequential transmission count is decremented by 1. The steps of generating a call message for the current call frequency based on the current call frequency, identification data, communication type, the location of the ACS caller, and the current sequential transmission count are performed until a specified number of call messages are generated, or until the current sequential transmission count becomes zero. When the first current call frequency is found, the current sequential transmission count is the initial count.

[0057] The current sequential transmission count is the number of remaining call packets that still need to be transmitted. Alternatively, the current sequential transmission count is equal to the number of remaining call packets.

[0058] Communication types include single-sideband suppressed carrier voice (J3E voice), F1B mode with automatic repeat request (F1B ARQ), F1B mode with forward error correction (F1B FEC), and FIB data.

[0059] The call message uses DSC communication and includes a DSC field. The specific meaning of the DSC field is shown in Table 1.

[0060] Search for the current calling frequency. Within each frequency band, search for a suitable, unoccupied, low-noise calling frequency to obtain the current calling frequency. The call message includes Message 1 and Message 2. Use the communication type as the first remote control command and the current sequential transmission count as the second remote control command. Add the first and second remote control commands to Message 1. Add the current calling frequency and the location of the ACS calling party to Message 2. Generate the call message based on the ACS called party identification data, the ACS calling party identification data, Message 1, and Message 2. Optionally, the call message may also include format indicators, call category, etc. Identification data includes MMSI. Transmit the call message on the current calling frequency. When the first current calling frequency is found, the current sequential transmission count is the initial count. The initial count is equal to a specified number minus 1. For example, if the specified number is 6, the initial count is 5.

[0061] Table 1

[0062] The meanings of each value in the second remote control command are shown in Table 2.

[0063] Table 2

[0064] Search for the next calling frequency. Set the next calling frequency as the current calling frequency and decrement the current sequential transmission count by 1. For example, the current sequential transmission count is reduced from the initial count of 5 to 4. Repeat the steps of generating a call message for the current calling frequency based on the current calling frequency, identification data, communication type, ACS caller location, and current sequential transmission count until a specified number of call messages are generated, or until the current sequential transmission count becomes zero.

[0065] If the current sequential transmission count becomes zero, the generation and transmission of call messages ceases. At this point, call messages on each call frequency have been generated and transmitted to the called party in the ACS on the corresponding call frequency.

[0066] This invention generates a call message for the current call frequency based on the current call frequency, the ACS called party's identification data, the communication type, the ACS calling party's location, the ACS calling party's identification data, and the current sequential transmission count. This ensures the integrity of the call message information. After receiving the call message, the ACS called party can establish a communication connection with the ACS calling party based on the information carried in the call message, thereby improving the accuracy of automatic connection communication. By setting the current sequential transmission count, this invention ensures the generation of a specified number of call messages, achieving automatic completion of one round of ACS calls and improving call efficiency.

[0067] Optionally, a call message for the current call frequency can be generated based on the current call frequency, the ACS called party's identification data, the communication type, the ACS calling party's location, the ACS calling party's identification data, and the current cumulative number of transmissions.

[0068] The next call frequency found is used as the current call frequency, and the current cumulative transmission count is incremented by 1. The steps of generating a call message for the current call frequency based on the current call frequency, identification data, communication type, the location of the ACS caller, and the current cumulative transmission count are performed until a specified number of call messages are generated, or until the current cumulative transmission count becomes a specified number. When the first current call frequency is found, the current cumulative transmission count is 1.

[0069] Based on the above embodiments, after determining that one round of ACS calls has been completed, the following steps are also included: Start a waiting timer. If the waiting time exceeds the set duration and no response message is received, re-execute an ACS call. If no response message is received after a set number of consecutive ACS calls, the ACS call is determined to have failed. When a positive response message is received within a set time period or a set number of rounds, the qualified call frequency in the positive response message is recorded.

[0070] Once the ACS caller confirms the completion of an ACS call round, the ACS caller returns to the ACS scan and receive state and DSC monitoring.

[0071] The ACS calling party starts a waiting timer. If the waiting time exceeds the set duration and no response message is received, the ACS calling party restarts the call. The ACS calling party also starts an answer timeout timer and calculates the waiting time. If the waiting time exceeds the set duration and no response message is received from the ACS called party, the ACS calling party restarts the call.

[0072] If an ACS call fails to receive a response message after completing the set number of rounds, the ACS call is considered to have failed. For example, if the set number of rounds is 3, the ACS calling party determines that the ACS call has failed if it still has not received a response message from the ACS called party after completing 3 rounds of ACS calls.

[0073] Optionally, if a negative response message is received within a set time period or a set number of rounds, the ACS call is determined to have failed.

[0074] When a positive response message is received within a set time period or set number of rounds, the qualified call frequency in the positive response message is recorded. Subsequently, the ACS calling party sends data to the ACS called party based on this qualified call frequency.

[0075] This invention sets standard waiting times and redundancy counts for ACS calls by setting duration and number of rounds, and establishes a unified standard for measuring ACS call failure or success, thus standardizing the judgment of ACS call failure and success.

[0076] like Figure 2 As shown, the automatic connection communication calling method provided by the present invention is applied to the calling party of ACS and specifically includes the following steps.

[0077] Step 1.1: The ACS caller performs an ACS scan and DSC monitoring.

[0078] Step 1.2: The operator of the ACS calling party enters the MMSI of the ACS called party through the ACS calling terminal, selects the communication type, and operates the ACS call.

[0079] Step 1.2: Determine if the transmitter is working properly and idle.

[0080] Step 1.2.1: If the transmitter is faulty or busy, do not make an ACS call, return to step 1.1, and continue to perform ACS scanning and DSC monitoring.

[0081] Step 1.2.2: If the transmitter is confirmed to be normal and idle, stop the ACS scan and proceed to step 1.3.

[0082] Step 1.3: Automatically generate a specified number of call messages.

[0083] Step 1.4: Transmit the corresponding call messages sequentially on each call frequency to perform ACS calls.

[0084] Step 1.5: Determine whether an ACS call round has been successfully completed.

[0085] Step 1.5.1: If an ACS call is not successfully completed, prompt the ACS calling operator that the call message has failed to be sent, return to step 1.1, and continue to perform ACS scanning and DSC monitoring.

[0086] Step 1.5.2: If an ACS call is successfully completed, resume ACS scanning and DSC monitoring, and proceed to step 1.6.

[0087] Step 1.6: Determine whether a response message has been received.

[0088] Step 1.6.1: If the set time limit is exceeded, or if no response message is received after a set number of ACS calls, the ACS call is determined to have failed. Return to step 1.1 and continue to perform ACS scanning and DSC monitoring. The operator of the ACS calling party terminates the ACS communication procedure.

[0089] Step 1.6.2: If a response message is received, determine whether the response message is positive or negative. If the response message is negative, the ACS call has failed, and the process returns to Step 1.1 to continue ACS scanning and DSC monitoring. The ACS calling party's operator terminates the ACS communication procedure. If the response message is positive, proceed to Step 1.7.

[0090] Step 1.7: Based on the positive response message, determine the qualified call frequency. Set the qualified call frequency in the transmitter to prepare for subsequent transmission services.

[0091] like Figure 3 As shown, the present invention also provides a calling method for automatic connection communication, applied to the called party of the automatic connection system ACS, including steps S300 to S400, each step being as follows.

[0092] S300: Sequentially receives each call message sent by the ACS calling party on each call frequency.

[0093] Each call message is generated sequentially by the ACS calling party after receiving the ACS called party's identification data and communication type input by the user.

[0094] The operator of the ACS calling party enters the MMSI of the ACS called party through the ACS calling terminal, selects the communication type, and then initiates the ACS call.

[0095] After receiving the identification data and communication type of the ACS called party, the ACS calling terminal immediately stops the current ACS scan and generates a specified number of call messages based on the received identification data and communication type to generate call messages for each call frequency.

[0096] The ACS calling terminal sequentially transmits each call message to the ACS calling device (e.g., a shipboard medium-high frequency transceiver radio). Then, through the RF antenna of the ACS calling device, it sequentially sends the call message corresponding to each call frequency to the ACS called party. During the transmission of call messages, the ASC calling party stops ACS scanning.

[0097] When the ACS calling party sends call messages on 6 calling frequencies, the call execution time on each calling frequency can be the same.

[0098] When the called party in the ACS does not receive user-specified or call messages, it is in both the automatic channel scanning state of the call frequencies of the 6 ACS and the DCS monitoring state of the pre-alarm frequency.

[0099] The ACS recipient receives each call message sent by the ACS caller in sequence on each call frequency via an RF antenna.

[0100] S400: After confirming that a specified number of call messages have been received and that the specified number of call messages are qualified, an affirmative response message is sent to the ACS calling party so that the ACS calling party can obtain a qualified call frequency based on the affirmative response message.

[0101] The qualified call frequency is used for the ACS caller to send data to the ACS called party.

[0102] The ACS-received party records each received call message and, after confirming that a specified number of call messages have been received based on the recording results, checks the specified number of call messages.

[0103] The ACS called party checks each call message and decides whether to accept or reject the ACS call based on the check results. Optionally, after completing a round of ACS call message reception, the ACS called party checks each call message according to a pre-set verification procedure and chooses to accept or reject the ACS call based on the check results. When the ACS called party chooses to accept the ACS call, it sends an affirmative response message to the ACS calling party.

[0104] Optionally, when the ACS called party chooses to reject the ACS call, it sends a negative response message to the ACS calling party, or does not send a response message.

[0105] After the ACS calling party sends a round of ACS call messages, it performs ACS scanning and DSC monitoring. When the ACS calling party receives a positive response message, it identifies the qualified call frequency in the positive response message. Subsequently, it sends data to the ACS called party through this qualified call frequency.

[0106] The automatic connection communication call method provided in this invention achieves automatic communication verification for each call frequency by sending call messages on various call frequencies and further obtaining qualified call frequencies based on positive response messages. This avoids manual selection of call frequencies and ensures that automatic connection communication calls can be successfully completed even in emergency situations or dangerous circumstances, thus improving the efficiency of GMDSS channel determination. This invention ensures the accuracy of qualified call frequencies by sending positive response messages only after checking a specified number of qualified call messages, thereby improving the accuracy of ACS communication.

[0107] Based on the above embodiments, the receipt of a specified number of call messages is confirmed in the following manner: Upon receiving the first call message, record the remaining reception time and the current sequential transmission count; When the next call message is received, the remaining reception time is updated until the updated remaining reception time is 0, or until the recorded current sequential transmission count is zero, confirming that the specified number of call messages have been received. The updated remaining reception time is determined based on the current sequential transmission count and the reception time of one call message, and the reception time of each call message is the same.

[0108] When the ACS calling party sends call messages on 6 calling frequencies, the call execution time on each calling frequency can be the same.

[0109] Specifically, when the called party in the ACS receives call messages on 6 call frequencies, the reception time of the call messages on each call frequency is the same.

[0110] When the ACS (Accounting Service Provider) receives the first call message, it starts a timer to record the remaining reception time and the current sequential transmission count carried in the call message. Each time the ACS receives a new call message, it updates the remaining reception time and the current sequential transmission count via the timer.

[0111] The updated remaining reception time is determined based on the current number of sequential transmissions and the reception time of a call message. For example, the updated remaining reception time = reception time of a call message × current number of sequential transmissions.

[0112] This invention ensures the integrity of received call messages by continuously updating the remaining reception time and the current sequential transmission count, thereby ensuring the reception of a specified number of call messages.

[0113] Based on the above embodiments, checking the validity of a specified number of call messages includes the following steps: Check the communication type carried by a specified number of call messages; When the communication type is applicable to the ACS called party, check the call frequency carried in each call message; When a call message carries a call frequency that is applicable to the ACS called party, a specified number of call messages are determined to be qualified, and the call frequency carried by the call message is taken as the qualified call frequency.

[0114] All call messages carry the same communication type. The ACS called party checks the communication type carried in the call messages. When the check confirms that the communication type is suitable for the ACS called party, the call frequency carried in each call message is further checked.

[0115] Optionally, each call message carries its own call frequency. For example, when a call message is transmitted at 16695kHz, the call frequency carried by that call message is 16695kHz. When a call message carrying a call frequency applicable to the ACS called party exists, a specified number of call messages are determined to be qualified, and the call frequencies carried by those call messages are taken as qualified call frequencies. For example, when the detection confirms that the call frequency carried by the 6th call message is applicable to the ACS called party, the call messages received in this round are determined to be qualified, and the call frequency carried by the 6th call message is taken as qualified call frequencies.

[0116] This invention uses a dual check of communication type and call frequency to screen for qualified call frequencies, ensuring that both the communication type and call frequency are compatible with the ACS called party, thus guaranteeing the accuracy of automatic communication connection.

[0117] Based on the above embodiments, after confirming that a specified number of received call messages are valid, an affirmative response message is sent to the ACS calling party, including: When the number of qualified call frequencies is greater than 1, all qualified call frequencies are sorted based on the signal reception quality of the call messages on the qualified call frequencies. Based on the sorting results, an affirmative response message is sent to the ACS caller on at least one qualified call frequency with good signal reception quality.

[0118] When the ACS (Accounting System) detects more than one qualified call frequency, all qualified call frequencies are ranked based on the signal reception quality of the call messages on those frequencies. Optionally, the signal reception quality can be evaluated by factors such as the received signal level, symbol error rate, and noise level of the call messages. The better the signal reception quality of the call messages on a qualified call frequency, the higher the qualified call frequency is ranked.

[0119] Based on the ranking results, a set number of qualified calling frequencies that rank highly are designated as qualified calling frequencies with good signal reception quality. An affirmative response message is sent to the ACS calling party on at least one qualified calling frequency with good signal reception quality.

[0120] This invention improves the stability of maritime automatic connection communication by sending positive response messages on qualified call frequencies with good signal reception quality, ensuring high-quality transmission of positive response messages to the ACS caller.

[0121] Based on the above embodiments, after confirming that a specified number of call messages have been received, the following steps are also included: When the communication type is not applicable to the ACS called party, a specified number of call packets are determined to be invalid; or, when the communication type is applicable to the ACS called party, but the call frequency carried by all call packets is not applicable to the ACS called party, a specified number of call packets are determined to be invalid. Based on the signal reception quality of each call message, the call frequencies carried in each call message are sorted. Based on the sorting results, a negative response message is sent to the ACS caller on at least one call frequency with good signal reception quality.

[0122] When the communication type is not suitable for the ACS called party, a specified number of call packets are deemed invalid. For example, when the communication type is incompatible with the ACS called party, a specified number of call packets are deemed invalid.

[0123] Call frequencies are not applicable to ACS called parties, including when the call frequency is in use or is disabled.

[0124] When the communication type is applicable to the ACS called party, but the call frequency carried by all call packets is not applicable to the ACS called party, a specified number of call packets are deemed invalid.

[0125] When a specified number of call messages are found to be invalid, the call frequencies carried by each call message are sorted based on the signal reception quality of each call message.

[0126] Based on the ranking results, a set number of calling frequencies that rank highly are designated as calling frequencies with good signal reception quality. A negative response message is sent to the ACS calling party on at least one calling frequency with good signal reception quality.

[0127] This invention ensures that the negative response message is transmitted to the ACS caller with high quality by sending the negative response message on a call frequency with good signal reception quality.

[0128] like Figure 4 As shown, the automatic connection communication calling method provided by the present invention is applied to the called party in ACS and specifically includes the following steps.

[0129] Step 2.1: The called party performs an ACS scan and DSC monitoring.

[0130] Step 2.1: When a call message is received, determine whether the remaining reception time is zero based on the timer.

[0131] Step 2.1.1: If the remaining reception time is not zero, continue to receive call messages, evaluate the signal reception quality of each call message, and proceed to step 2.2.

[0132] Step 2.1.2: If the remaining reception time is zero, proceed to step 2.4.1.

[0133] Step 2.2: Parse the ACS called party identification data in the call message to determine whether it is calling itself (the current ACS called party).

[0134] Step 2.2.1: If the call message is calling the current ACS called party, then proceed to step 2.3.

[0135] Step 2.2.2: If the call message is not a call to the current ACS called party, ignore the call message and return to step 2.1 to perform ACS scanning and DSC monitoring.

[0136] Step 2.3: Further determine whether the ACS calling party belongs to the ACS device that the current ACS called party has already connected to.

[0137] Step 2.3.1: If the ACS calling party belongs to an ACS device that the current ACS called party has already connected to, then ignore the call message and return to step 2.1 to perform ACS scanning and DSC monitoring.

[0138] Step 2.3.2: If the ACS calling party is not an ACS device that the current ACS called party has already connected to, then proceed to step 2.4.

[0139] Step 2.4: Determine if the current sequential transmission count is zero.

[0140] Step 2.4.1: If the current sequential transmission count is zero, select the qualified call frequency with the best signal reception quality and proceed to step 2.5.

[0141] Step 2.4.2: If the current sequential transmission count is not zero, update the remaining reception time, return to step 2.1, perform ACS scan and DSC monitoring to receive the remaining call messages.

[0142] Step 2.5: Determine if the communication type is applicable.

[0143] Step 2.5.1: If the communication type is ACS called party, proceed to step 2.6.

[0144] Step 2.5.2: If the communication type is not applicable to the ACS called party, send a negative response message and return to step 2.1 to perform ACS scanning and DSC monitoring.

[0145] Step 2.6: Determine if the calling frequency is applicable.

[0146] Step 2.6.1: If the calling frequency is applicable to the ACS called party, the operator on the called side is notified that a valid calling frequency has been received. The operator enters an acceptance or rejection command through the ACS called party's terminal and proceeds to step 2.7.

[0147] Step 2.6.2: If the call frequency is not applicable to the ACS called party, send a negative response message and return to step 2.1 to perform ACS scanning and DSC monitoring.

[0148] Step 2.7: Determine whether to accept ACS calls.

[0149] Step 2.7.1: If an accept instruction is received from the operator, confirm that the ACS call has been accepted and send an affirmative response message to the ACS caller. Simultaneously, record the qualified call frequency to prepare for subsequent data transmission.

[0150] Step 2.7.2: If a rejection command is received from the operator, send a negative response message and return to step 2.1 to perform ACS scanning and DSC monitoring.

[0151] The automatic connection communication call system provided by the present invention will be described below. The automatic connection communication call system described below can be referred to in correspondence with the automatic connection communication call method described above.

[0152] like Figure 5 As shown, an automatic connection communication call system includes an automatic connection system (ACS) for the calling party and an ACS for the called party: When the ACS calling party receives the identification data and communication type of the ACS called party input by the user, it generates a specified number of call messages in sequence and sends each call message to the ACS called party in sequence on each call frequency. After sending the specified number of call messages, it determines that one round of ACS call is completed. The ACS (Accounting Service Accreditation) is used by the called party to receive each call message sequentially on each call frequency; after confirming that a specified number of call messages have been received and that the specified number of call messages are qualified, the called party sends an affirmative response message to the ACS. The ACS calling party uses a positive response message to obtain a qualified call frequency, and then sends data to the ACS called party based on the qualified call frequency.

[0153] like Figure 5 As shown, the ACS calling party includes the ACS calling terminal and the ACS calling equipment. The ACS called party includes the ACS called terminal and the ACS called equipment.

[0154] The call method for executing automatic connection communication based on the above-mentioned automatic connection communication call system specifically includes the following steps.

[0155] When neither the ACS calling party nor the ACS called party receives a user-specified or response message, they are in both ACS scanning state and DCS monitoring state.

[0156] Step 1: The operator on the ACS calling side enters the MMSI of the called party through the ACS calling terminal and selects the communication type to initiate the ACS call. The ACS calling terminal sends an ACS calling request to the ACS calling equipment.

[0157] Step 2: The ACS calling device receives the ACS calling request and stops the ACS scan.

[0158] Step 3: The ACS calling device automatically generates a specified number of call packets and transmits the corresponding call packets on each call frequency to initiate an ACS call, while recording the remaining transmission count (equal to the current sequential transmission count). Simultaneously, the ACS called device starts a timer and updates the remaining reception duration and reception count.

[0159] Specifically, it may include the following steps.

[0160] The ACS call was made using 2174.5kHz, and the current sequential transmission count is 5.

[0161] An ACS call is being made using 4177.5kHz, and the current sequential transmission count is 4.

[0162] Using 6268kHz for ACS calls, the current sequential transmission count is 3.

[0163] The ACS call was made using 8376.5kHz, and the current sequential transmission count is 2.

[0164] An ACS call is being made using 12520kHz, and the current sequential transmission count is 1.

[0165] Using 16695kHz for ACS calls, the current sequential transmission count is 0.

[0166] Step 3: After the ACS called device confirms that it has received the specified number of call packets, it sorts the call frequencies according to the signal reception quality of the call packets. At the same time, after the ACS calling device confirms that it has sent the specified number of call packets, it starts a waiting timer and resumes ACS scanning.

[0167] Step 4: If the ACS calling device does not receive a response message within the set time, it will re-execute an ACS call.

[0168] Step 5: If the calling ACS device fails to receive a response message after three rounds of ACS calls, the ACS call is considered to have failed.

[0169] Step 6: The ACS called device initiates an ACS called request to the ACS called terminal based on the inspection results of a specified number of call messages.

[0170] Step 7: If the operator on the called side selects to accept an ACS call through the ACS called terminal, they enter the accept command. The ACS called terminal sends an affirmative response message to the ACS called device. The ACS called device forwards the affirmative response message to the ACS calling device and then resumes ACS scanning. After forwarding the affirmative response message to the ACS calling terminal, the ACS calling device records the qualified call frequency and resumes ACS scanning.

[0171] If the operator on the called side chooses to reject the ACS call through the ACS called terminal, they enter a rejection command. The ACS called terminal sends a negative response message to the ACS called device. The ACS called device forwards the negative response message to the ACS calling device and then resumes ACS scanning. The ACS calling device forwards the negative response message to the ACS calling terminal and then resumes ACS scanning.

[0172] The automatic connection communication call system provided in this invention achieves automatic communication verification for each call frequency by sending call messages on various call frequencies and further obtaining qualified call frequencies based on positive response messages. This avoids manual selection of call frequencies and ensures that automatic connection communication calls can be successfully completed even in emergency situations or dangerous circumstances, improving the efficiency of GMDSS channel determination. This invention ensures the accuracy of qualified call frequencies by checking a specified number of qualified call messages before sending positive response messages, thereby improving the accuracy of ACS communication.

[0173] All relevant content of each step involved in the above method embodiments can be referenced from the functional descriptions of the corresponding ACS calling party and ACS called party, and will not be repeated here.

[0174] like Figure 6 As shown, the present invention also provides an automatic connection communication calling system, including at least one transceiver communication device located on the coast and at least one transceiver communication device located on a ship, wherein the transceiver communication devices can communicate with each other, and each transceiver communication device can execute the automatic connection communication calling method provided in any of the above embodiments.

[0175] Coastal transceiver equipment includes the ACS coastal radio station. Ship-based transceiver equipment includes the ACS ship radio station. For example... Figure 6As shown, the automatic connection communication calling system includes one ACS coastal radio station and two ACS ship radio stations (ACS ship radio station 1 and ACS ship radio station 2). The ACS coastal radio station can act as either the ACS calling party or the ACS called party. Any ACS ship radio station can act as either the ACS calling party or the ACS called party.

[0176] An ACS coastal radio station comprises an ACS terminal, an ACS server, shore-based mid-to-high frequency (MTBF) receivers, shore-based MTBF transmitters, receiving antennas, and transmitting antennas. The ACS terminal provides the user interface and process status display. The ACS server handles the ACS calling and receiving logic control and controls the shore-based MTBF receivers and transmitters. The shore-based MTBF receivers and transmitters are responsible for transmitting and receiving ACS MTBF signals. All equipment on the ACS coastal radio station is interconnected via a wired network and Transmission Control Protocol (TCP) or Internet Protocol (IP) (except for antennas). For example, all equipment on the ACS coastal radio station can be connected via a Local Area Network (LAN). The ACS coastal radio station can employ a separate receiver and transmitter deployment, placing the receiver at the receiving station and the transmitter at the transmitting station to avoid interference between receivers and transmitters. The shore-based MTBF transmitters typically use high-power transmitters with a power level of 1kW or higher, providing signal coverage over a wider sea area.

[0177] The ACS (Autonomous Communication System) marine radio consists of an ACS terminal, a ship-type HF transceiver, and an HF antenna. The ACS terminal is responsible for providing the ACS user interface and displaying process status, while the ship-type HF transceiver handles the ACS caller / receiver logic control and the transmission and reception of HF signals. All devices in the ACS marine radio are interconnected via a wired network and TCP / IP protocol (except for the antenna). For example, all devices in the ACS marine radio are connected via a Local Area Network (LAN). Because the ship-type HF transceiver provides an ACS human-machine interface on its control panel, the ACS terminal is optional. The ship-type HF radio can use a transceiver and an antenna, and employs a low-power radio with a power level below 125W to suit the limited installation space on ships.

[0178] Optionally, the ship-type medium- and high-frequency transceiver radio supports fixed-frequency communication and ACS frequency-selective communication.

[0179] Optionally, the shore-based medium- and high-frequency transmitter can be a 1kW or 5kW medium- and high-frequency transmitter. The 5kW or 1kW medium- and high-frequency transmitter uses a shortwave single-sideband radio, which is a new generation of shortwave transmitting equipment for maritime communications. It is mainly used as a shore station, but can also be remotely controlled via interfaces such as Ethernet ports, providing highly reliable and high-power shortwave transmission resources for maritime communication systems.

[0180] Optional, shore-based mid-to-high frequency receivers include high-performance mid-to-high frequency board-type receivers, used to receive shortwave single-sideband, independent sideband, equal-amplitude alarm, amplitude modulation voice and other signals, suitable for multiple receiving task requirements, supporting uninterrupted hot-swappable board maintenance, local touch control display interface and remote networked remote control and data transmission.

[0181] Optionally, the ACS server includes a commercial server (brand not limited) with a Linux system and an x86 architecture processor, and has ACS server software installed to provide ACS calling and receiving logic control and control of the shore-based medium- and high-frequency receiver and the shore-based medium- and high-frequency transmitter.

[0182] Optionally, the ACS terminal should be a commercial laptop or desktop computer (brand not limited) with a Windows system and an x86 architecture processor, and should have ACS terminal software installed to provide a user interface for ACS functions, which mainly includes: ACS frequency selection control interface, ACS frequency selection result list interface, ACS frequency selection process status interface, system configuration interface, etc.

[0183] The automatic connection communication call system of this invention has undergone system function testing in indoor environments and outdoor skywave environments (36km / 85km / 380km) in some coastal areas of China. Over 800 automatic test data records were completed in the indoor environment and over 500 in the skywave environment. Targeted manual testing was also conducted to verify the system's functional compliance. Tests showed that the ACS frequency selection success rate was 100% indoors and 98% in the outdoor skywave environment. Furthermore, cross-validation of the ACS automatic frequency selection process with manual Single Sideband (SSB) communication determined that the frequency automatically selected by ACS is superior to that of manual SSB communication. Verification shows that the automatic connection communication call system of this invention meets standard requirements, the frequency selection results are consistent with actual usage, the system operates stably, and it is capable of commercial application in the maritime field.

[0184] Figure 7 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 7As shown, the electronic device may include a processor 710, a communications interface 720, a memory 730, and a communication bus 740, wherein the processor 710, the communications interface 720, and the memory 730 communicate with each other via the communication bus 740. The processor 710 can call logical instructions in the memory 730 to execute any of the aforementioned automatic connection communication call methods.

[0185] Furthermore, the logical instructions in the aforementioned memory 730 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0186] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the call method for automatic connection communication provided by the above methods.

[0187] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0188] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0189] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A calling method for automatically connecting communication, characterized in that, Applied to the calling party in an Automatic Connection System (ACS), including: When the identifier data and communication type of the ACS called party are received from the user, a specified number of call messages are generated in sequence, and each of the call messages is sent to the ACS called party in sequence on each call frequency. After sending the specified number of call messages, it is determined that one round of ACS call is completed. A positive response message sent by the ACS called party is obtained. Based on the positive response message, a qualified call frequency is obtained, and data is sent to the ACS called party based on the qualified call frequency. The positive response message is sent by the ACS called party to the ACS calling party after confirming that the specified number of call messages have been received and after checking that the specified number of call messages are qualified.

2. The automatic connection communication calling method according to claim 1, characterized in that, The step of sequentially generating a specified number of call messages includes: Search for current call frequencies; Based on the current call frequency, the identification data of the ACS called party, the communication type, the location of the ACS calling party, the identification data of the ACS calling party, and the current sequential transmission count, a call message for the current call frequency is generated. The next call frequency found is taken as the current call frequency, and the current sequential transmission count is decremented by 1. The step of generating a call message for the current call frequency based on the current call frequency, the identification data, the communication type, the location of the ACS caller, and the current sequential transmission count is executed until the specified number of call messages are generated, or until the current sequential transmission count becomes zero. When the first current call frequency is found, the current sequential transmission count is the initial count.

3. The automatic connection communication calling method according to claim 1, characterized in that, After confirming the completion of an ACS call round, the following is also included: Start a waiting timer. If the waiting time exceeds the set duration and no response message is received, re-execute an ACS call. If the ACS call fails to receive the response message after a set number of consecutive rounds of calls, the ACS call is determined to have failed. When a positive response message is received within the set time period or set number of rounds, the qualified call frequency in the positive response message is recorded.

4. A calling method for automatic connection communication, characterized in that, Applied to the called party in the Automatic Connection System (ACS), including: Each call message sent by the ACS calling party is received sequentially on each call frequency; each call message is generated sequentially by the ACS calling party after receiving the identification data and communication type of the ACS called party input by the user. Once the received specified number of call messages are confirmed to be valid, an affirmative response message is sent to the ACS calling party so that the ACS calling party can obtain a valid call frequency based on the affirmative response message. The valid call frequency is used by the ACS calling party to send data to the ACS called party.

5. The automatic connection communication calling method according to claim 4, characterized in that, The specified number of call messages are acknowledged as received based on the following method: Upon receiving the first call message, record the remaining reception time and the current sequential transmission count; When the next call message is received, the remaining reception time is updated until the updated remaining reception time is 0, or until the recorded current sequential transmission count is zero, confirming that the specified number of call messages have been received. The updated remaining reception time is determined based on the current sequential transmission count and the reception time of a call message, and the reception time of each call message is the same.

6. The automatic connection communication calling method according to claim 4, characterized in that, Checking the specified number of call messages for validity includes: Check the communication type carried by the specified number of call messages; When the communication type is applicable to the ACS called party, check the call frequency carried in each call message; When the call frequency carried by the call message is applicable to the ACS called party, the specified number of call messages are determined to be qualified, and the call frequency carried by the call message is taken as the qualified call frequency.

7. The automatic connection communication calling method according to claim 6, characterized in that, Upon confirming that a specified number of received call messages are valid, sending an affirmative response message to the ACS calling party includes: When the number of qualified call frequencies is greater than 1, all qualified call frequencies are sorted based on the signal reception quality of the call messages on the qualified call frequencies. Based on the sorting results, the affirmative response message is sent to the ACS calling party on at least one qualified call frequency with good signal reception quality.

8. The automatic connection communication calling method according to claim 6, characterized in that, After confirming that a specified number of call messages have been received, the process further includes: When the communication type is not applicable to the ACS called party, the specified number of call packets are determined to be unqualified; or, when the communication type is applicable to the ACS called party, but the call frequency carried by all the call packets is not applicable to the ACS called party, the specified number of call packets are determined to be unqualified. Based on the signal reception quality of each call message, the call frequencies carried by each call message are sorted. Based on the sorting results, a negative response message is sent to the ACS calling party on at least one of the call frequencies with good signal reception quality.

9. A call system for automatic communication connection, characterized in that, This includes the calling party and the called party in the Automatic Connection System (ACS): The ACS calling party is used to, upon receiving the identification data and communication type of the ACS called party input by the user, sequentially generate a specified number of call messages and send each of the call messages to the ACS called party on each call frequency in sequence; after sending the specified number of call messages, it determines that one round of ACS call is completed. The ACS called party is used to receive each of the call messages sequentially on each of the call frequencies; when it confirms that a specified number of call messages have been received and checks that the specified number of call messages are qualified, it sends an affirmative response message to the ACS calling party. The ACS calling party is used to obtain a qualified call frequency based on the affirmative response message, and to send data to the ACS called party based on the qualified call frequency.

10. A call system for automatic communication connection, characterized in that, It includes at least one transceiver located on the coast and at least one transceiver located on a ship, wherein each of the transceivers can communicate with each other and each of the transceivers can perform the call method of automatic connection communication as described in any one of claims 1 to 8.

11. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the automatic connection communication call method as described in any one of claims 1 to 8.

12. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the automatic connection communication call method as described in any one of claims 1 to 8.

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