A portable AIS transceiver supporting remote authentication configuration function

Abstract

This invention discloses a portable AIS transceiver supporting remote authentication and configuration, belonging to the field of marine electronic equipment. It includes a portable housing and a built-in main control module, AIS transceiver module, satellite positioning module, wireless communication module, battery management module, rechargeable battery, and display module. The main control module provides an online configuration interface, receiving requests for configuring ship static information. When a request includes MMSI parameter modification, it sends the request to a remote authorization server for authentication via the wireless communication module. Only after receiving and verifying the authorization information is passed can the new MMSI be written and the AIS transmission controlled. The device storage area stores the MMSI, ship static information, device identification information, and configuration logs. This invention balances the flexible use of portable AIS with the secure monitoring of MMSI identity parameters, achieving remote, compliant, and traceable configuration, preventing unauthorized tampering, and is suitable for scenarios such as ship replacement, leasing, and rescue.

Description

Technical Field

[0001] This invention belongs to the fields of marine electronic equipment, Automatic Identification System (AIS) terminal equipment, wireless communication equipment, and secure configuration of ship identity parameters, and particularly relates to a portable AIS transceiver that supports remote authentication configuration. Background Technology

[0002] In recent years, with the rapid development of shipbuilding technology and the rise of the marine economy, maritime transportation has become increasingly prominent, and the global shipping market has experienced unprecedented expansion and development. As a fundamental and service industry of the world economy, maritime transportation provides crucial support and protection for global economic development. While the rapid development of the global shipping industry has brought enormous economic benefits, it has also made maritime traffic increasingly complex.

[0003] The Automatic Identification System (AIS) is a wireless communication system widely used for ship identification, ship positioning, maritime collision avoidance, port surveillance, and maritime traffic situational awareness. AIS terminals typically broadcast their own dynamic and static information periodically via the VHF band. Dynamic information may include the ship's position, speed, course, and time; static information may include the Maritime Mobile Service Identifier (MMSI), ship name, call sign, ship type, ship size, and antenna installation location. According to the mandatory requirements of the International Maritime Organization (IMO), all international vessels over 300 tons and non-international vessels over 500 tons have already installed AIS equipment. Although smaller vessels are not currently required to install this equipment, due to AIS's self-reporting capabilities and gradually decreasing manufacturing costs, AIS is increasingly being applied to areas such as maritime awareness, surface surveillance, hydro-meteorology, maritime rescue, auxiliary identification, recreation, environmental protection, anti-smuggling, and counter-terrorism.

[0004] The Maritime Mobile Service Identifier (MMSI) is a crucial identification parameter for ship radio communication and AIS identification. It is typically assigned by the International Telecommunication Union (ITU) or national maritime authorities (such as the China Maritime Safety Administration, the US FCC, and the UK's Ofcom) and strictly bound to ship identity to ensure the accuracy and security of the global AIS network. AIS terminals carry the MMSI when transmitting AIS messages, enabling shore stations, nearby vessels, and maritime surveillance systems to identify the ship. Therefore, the correctness, uniqueness, and traceability of the MMSI directly affect the reliability of the AIS system and maritime navigation safety.

[0005] Currently, AIS device configuration primarily relies on local operation, meaning it connects to a computer or mobile terminal via communication interfaces such as USB, serial port (RS-232 / RS-485), WiFi, and Bluetooth, allowing manual input of data such as MMSI, vessel name, call sign, and vessel type. Since the MMSI is the unique identifier for a vessel, most countries worldwide impose varying degrees of restrictions on MMSI configuration. The US FCC mandates that all AIS devices must have their MMSI written to them once, and users cannot modify it after the initial write. Any changes must be made by returning the device to the factory or through an authorized agent. While European countries do not have unified legislation imposing such restrictions, mainstream manufacturers' configuration software limits the number of modifications to balance flexibility and tamper-proof requirements. AIS devices in the Chinese market (including Class A and Class B) typically allow users to modify their MMSI multiple times, but this must comply with the "Domestic Navigation Seagoing Vessel Statutory Inspection Technical Rules," which requires AIS data to be accurate and consistent with the vessel's certificate, and prohibits malicious tampering.

[0006] However, portable AIS transceivers are increasingly in demand in recreational sailing, charter boats, rescue boats, temporary testing, temporary transshipment, and small vessel applications. Portable AIS transceivers typically feature built-in batteries, external antenna interfaces, GPS positioning capabilities, and wireless data output, allowing users to take them to different vessels for temporary use. For such portable terminals, if the MMSI is written and cannot be modified by the user, the terminal needs to be returned to the factory or handled by an authorized agent when changing vessels or when vessel identification information changes. This results in high costs, long processing times, and hinders the flexible use of portable devices.

[0007] On the other hand, if portable AIS transceivers allow users to arbitrarily modify the MMSI, it could lead to problems such as AIS identity fraud, erroneous transmissions, and difficulties in regulatory traceability. For example, unauthorized users might write the MMSI of other vessels into the device or use the same MMSI across different vessels, causing the maritime regulatory system to receive incorrect vessel identification information. Therefore, portable AIS transceivers need to strike a technical balance between "flexible modification" and "controlled regulation."

[0008] Therefore, it is necessary to provide a new AIS transceiver architecture that allows the device to be used as a portable AIS transceiver terminal and to connect to an authorized server via the Internet for authentication and filing when MMSI parameters are modified. At the same time, it allows for relatively flexible online modification of non-MMSI parameters such as ship name, call sign, ship type, and ship size, and records are generated, thereby improving the compliance, security, convenience, and traceability of portable AIS terminals.

[0009] This patent aims to address the problems of insufficient security, difficulty in supervision, and inconvenience in the configuration of MMSI parameters in existing portable AIS transceivers, thereby ensuring the authenticity, legality, and traceability of AIS device identity information, and improving the management level of AIS devices and the security of maritime communications. Summary of the Invention

[0010] The purpose of this invention is to provide a portable AIS transceiver that supports remote authentication configuration, aiming to solve the problems of insufficient security, difficulty in supervision, and inconvenience in configuration operation of existing portable AIS transceivers during MMSI parameter configuration, thereby ensuring the authenticity, legality, and traceability of AIS device identity information, and improving the management level of AIS devices and the security of maritime communications.

[0011] To achieve the above objectives, the portable AIS transceiver supporting remote authentication configuration function provided by the present invention is implemented using the following technical solution:

[0012] The portable AIS transceiver supporting remote authentication configuration includes: a portable housing, and a main control module, an AIS transceiver module, a satellite positioning module, a wireless communication module, a battery management module, a rechargeable battery, and a display module disposed within the portable housing.

[0013] The portable housing is used to house the aforementioned modules. This housing is a splash-proof, dust-proof, or portable enclosure suitable for marine environments. Unlike traditional fixed-mount AIS transceivers, the portable housing does not require permanent attachment to the hull and can be carried by the user to different vessels for use.

[0014] The AIS transceiver module is electrically connected to the main control module and is configured to receive and / or transmit AIS messages. The AIS transceiver module can receive AIS messages from other ships or shore stations on the AIS operating frequency band and can also transmit its own AIS messages. The AIS transceiver module is a Class B AIS transceiver module, but Class B+, Class A, or other AIS transceiver modules conforming to the corresponding standards can also be used as needed.

[0015] The satellite positioning module is electrically connected to the main control module and is configured to acquire positioning information. The satellite positioning module is used to acquire information such as the device's location, time, speed, and heading. The satellite positioning module supports GPS, GLONASS, Galileo, BeiDou, or other GNSS systems.

[0016] The wireless communication module is electrically connected to the main control module and is configured to enable data communication between the portable AIS transceiver and the user access device and / or a remote authorization server. Preferably, the wireless communication module is a WiFi module, supporting access point mode and client mode. In access point mode, the user access device can connect to the WiFi hotspot generated by the device and access the device's local configuration page. In client mode, the device can connect to an external router, mobile hotspot, or shipboard network and access a preset server address via the Internet.

[0017] The battery management module is electrically connected to the rechargeable battery and the main control module, and is configured to manage the charge and discharge of the rechargeable battery and / or monitor its power supply status. The battery management module manages the charge and discharge of the battery, provides overcurrent and overvoltage protection, and reports the battery status to the main control module.

[0018] The rechargeable battery is electrically connected to the battery management module. Preferably, the rechargeable battery is a rechargeable lithium battery, including but not limited to lithium-ion batteries or lithium polymer batteries. More preferably, the rechargeable battery also has a built-in battery protection board for overcharge, over-discharge, over-temperature, and short-circuit protection.

[0019] The display module is electrically connected to the main control module and is configured to indicate the device's operating status and / or configuration status. The display module includes at least one of LED indicators, a buzzer, and a display screen, used to indicate battery level, charging status, GPS positioning status, AIS transmission / reception status, WiFi connection status, current ship information configuration status, authorization status, configuration success status, and configuration failure status.

[0020] The main control module is electrically connected to the AIS transceiver module, satellite positioning module, wireless communication module, battery management module, and display module. The main control module is a microcontroller, embedded processor, system-on-a-chip, or other control unit with executable firmware. The main control module is configured to provide or control an online configuration interface, receive ship static information configuration requests, and, when the configuration request includes an MMSI parameter modification request, send the MMSI parameter modification request to a remote authorization server for authentication via the wireless communication module. The main control module is also configured to allow the writing of new MMSI parameters to the device storage area only after receiving and verifying the MMSI modification authorization information returned by the remote authorization server, and to control the AIS transceiver module to perform AIS transmission based on the written MMSI parameters. The device storage area is used to store MMSI parameters, ship static information, device identification information, and configuration logs.

[0021] In a preferred embodiment, the main control module divides the device configuration parameters into controlled parameters, registered parameters, and general parameters. The controlled parameters include at least the MMSI (Missing Dimensional Signature Index). The main control module only allows a new MMSI to be written to the protected storage area after the remote authorization server completes authentication and returns valid authorization information. The registered parameters include the ship's name, call sign, ship type, ship size, antenna installation location, ship registry, or other static information related to the ship's identity but not belonging to the MMSI. These parameters can be modified by the user through the configuration page, but each modification saves the configuration record and uploads it to the remote authorization server for registration. The general parameters include the wireless network name, wireless network password, data output rate, data output protocol, display unit, log upload switch, device display settings, or other device operating parameters. These parameters can be configured locally by the user.

[0022] In another preferred embodiment, the user connects to the AIS transceiver's WiFi network via a mobile phone, tablet, or computer to access the device's built-in configuration webpage; or, after the AIS transceiver joins an external WiFi network, accesses the server page specified by the manufacturer. The user inputs or submits the vessel information to be modified. For non-MMSI parameters such as vessel name, call sign, vessel type, vessel size, and antenna position, the device writes and records them after completing user identity verification. For MMSI parameters, the device sends the MMSI to be written, device serial number, current MMSI, vessel information, user information, access time, IP address, and other information to the authorization server, which performs authentication. Only after receiving authorization information returned by the authorization server does the device's main control module allow the new MMSI to be written to the protected storage area.

[0023] In another preferred embodiment, the authorization information returned by the authorization server is a verification code, digital signature, encryption token, one-time license, or other authorization data that can be verified by the device. Before writing the MMSI, the AIS transceiver verifies the binding relationship between the authorization information and the device serial number, the MMSI to be written, the user account, and / or vessel information. Only after the verification is successful will the MMSI writing be performed. In this way, even if the user can access the configuration page, they cannot bypass the authorization server to directly modify the MMSI.

[0024] Furthermore, if an AIS transceiver has not been written with a valid MMSI or the MMSI is not authorized, AIS transmission is prohibited, or it will only function as an AIS receiver. Only after the MMSI authorization configuration is complete will the device be allowed to transmit AIS messages in normal mode.

[0025] In summary, this invention proposes a portable AIS transceiver that supports remote authentication and configuration, enabling remote, compliant, and secure configuration of the AIS transceiver. This overcomes the problems of existing technologies, such as reliance on local connections, low efficiency, and poor security, and improves the remote management capabilities and service efficiency of equipment suppliers.

[0026] The beneficial effects of this invention are:

[0027] The device features a built-in rechargeable battery and a portable housing, making it easy to use in various vessels, rescue scenarios, rental boats, or temporary testing scenarios.

[0028] The device accesses the internet and designated servers wirelessly via WiFi and other wireless methods, and supports online configuration.

[0029] MMSI parameters can only be modified after authentication by an authorized server, balancing the flexibility of portable devices with MMSI regulatory requirements;

[0030] Non-MMSI vessel static information can be modified online and recorded, facilitating user maintenance and accountability.

[0031] Configuration behavior, access information, and device information can be uploaded to the server for storage, facilitating querying and auditing by manufacturers, authorized service providers, or regulatory authorities. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the functional modules of a preferred embodiment of a portable AIS transceiver that supports remote authentication configuration, provided by an embodiment of the present invention.

[0033] Figure 2 A schematic diagram of the system architecture for implementing remote authentication configuration. Detailed Implementation

[0034] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. The terms "upper end," "lower end," "left side," "right side," "front end," "rear end," and similar expressions used herein refer to the positional relationship with reference to the accompanying drawings.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0038] I. Overall Structure

[0039] like Figure 1 As shown, this embodiment provides a portable AIS transceiver (1) that supports remote authentication configuration, which includes a main control module (1.1), an AIS transceiver module (1.2), a satellite positioning module (1.3), a wireless communication module (1.4), a battery management module (1.5), a rechargeable battery (1.6), a display module (1.7), and a portable housing (1.8).

[0040] The main control module (1.1) is electrically connected to the AIS transceiver module (1.2), satellite positioning module (1.3), wireless communication module (1.4), battery management module (1.5) and display module (1.7), respectively; the battery management module (1.5) is electrically connected to the rechargeable battery (1.6); the above functional modules are housed in the portable housing (1.8).

[0041] The portable housing (1.8) is used to house and protect the aforementioned modules. Preferably, the portable housing (1.8) adopts a splash-proof, dustproof, or impact-resistant structure suitable for marine environments, and may be equipped with a charging interface, AIS / VHF antenna interface, satellite positioning antenna interface, buttons, indicator lights, display windows, or mounting structures. Unlike fixed-installation AIS transceivers, the portable housing (1.8) in this embodiment is not required to be permanently fixed to the hull and can be carried by the user to different ships, rescue scenarios, rental ships, or temporary testing environments.

[0042] like Figure 2 As shown, the portable AIS transceiver (1) in this embodiment can work in conjunction with the user access device (3) and the remote authorization server (4). The user access device (3) is a mobile phone, tablet computer, computer, or other electronic device capable of accessing a web page configuration interface. The remote authorization server (4) is a device manufacturer server, distributor server, authorized service provider server, or maritime regulatory platform, used for authenticating, filing, and querying MMSI modification requests.

[0043] II. Functional Modules and Their Connections

[0044] The AIS transceiver module (1.2) is used to receive and / or transmit AIS messages in the AIS operating frequency band. The AIS transceiver module (1.2) connects to an external AIS / VHF antenna, or to an antenna interface located on the portable housing (1.8). The main control module (1.1) sends the AIS message data to be transmitted to the AIS transceiver module (1.2) and receives external AIS messages output by the AIS transceiver module (1.2). The main control module (1.1) parses, verifies, filters, forwards, or stores the received AIS messages, and generates dynamic, static, or navigation-related messages for the ship based on the current device configuration parameters, satellite positioning information, and authorization status.

[0045] The satellite positioning module (1.3) is used to obtain the device's current location, time, speed, heading, or other positioning-related information. The satellite positioning module (1.3) supports one or more of GPS, BeiDou, GLONASS, Galileo, or other satellite positioning systems. The main control module (1.1) receives the positioning data output by the satellite positioning module (1.3) and uses it for AIS dynamic message generation, device status display, log recording, and configuration behavior tracing. Preferably, when the satellite positioning module (1.3) fails to obtain valid positioning information, the main control module (1.1) controls the display module (1.7) to output a positioning incomplete prompt and restricts or delays the transmission of relevant AIS messages according to AIS protocol requirements.

[0046] The wireless communication module (1.4) is used to realize data communication between the portable AIS transceiver (1) and the user access device (3), external network, or remote authorization server (4). Preferably, the wireless communication module (1.4) is a WiFi module and supports access point mode and client mode. In access point mode, the portable AIS transceiver (1) generates a local wireless hotspot, and the user access device (3) connects to the hotspot and accesses the device's built-in configuration page through a browser. In client mode, the portable AIS transceiver (1) connects to an external router, mobile hotspot, or shipboard network and accesses the preset remote authorization server (4) through the Internet. The wireless communication module (1.4) can also be replaced or expanded to Bluetooth, cellular communication, satellite communication, or other wireless communication methods.

[0047] The battery management module (1.5) is used for charging and discharging management and power supply status monitoring of the rechargeable battery (1.6). The battery management module (1.5) includes one or more of the following: charging management circuit, power detection circuit, voltage detection circuit, current detection circuit, temperature detection circuit, and protection circuit. The main control module (1.1) obtains the battery voltage, charging status, remaining power, or abnormal status through the battery management module (1.5) and controls the device's operating mode accordingly.

[0048] A rechargeable battery (1.6) is used to power the portable AIS transceiver (1). Preferably, the rechargeable battery (1.6) is a lithium-ion battery, a lithium polymer battery, or other rechargeable battery suitable for use in portable electronic devices. The rechargeable battery (1.6) is provided with an independent protection board for overcharge, over-discharge, short circuit, overcurrent, or abnormal temperature protection.

[0049] The display module (1.7) is used to indicate the device's operating status to the user. The display module (1.7) includes LED indicators, a buzzer, an LCD screen, an OLED screen, an e-ink screen, or a combination thereof. The display module (1.7) is used to display or indicate battery status, charging status, satellite positioning status, AIS reception status, AIS transmission status, wireless network connection status, server connection status, current MMSI configuration status, authorization status, configuration success status, configuration failure status, and error reasons.

[0050] The main control module (1.1) is the core control unit of this embodiment, employing a microcontroller, embedded processor, system-on-a-chip, or other control unit capable of running firmware programs. The main control module (1.1) integrates configuration management, storage management, communication protocol processing, AIS message processing, log recording, and authorization verification functions. The main control module (1.1) stores the device serial number, current MMSI, ship static information, user configuration parameters, authorization status, server address, communication key, configuration log, and operation records in a non-volatile storage area, enabling the device to recover its configuration after a power outage or restart.

[0051] III. Configuration Page and Parameter Display

[0052] In one specific configuration process, the user connects to the local wireless network established by the portable AIS transceiver (1) through the user access device (3) and accesses the device's built-in configuration page through a browser. The built-in configuration page is provided by the Web service program in the main control module (1.1) or the wireless communication module (1.4).

[0053] Through the configuration page, users can view the current configuration information and operating status information of the portable AIS transceiver (1). The configuration information includes the device serial number, MMSI number, ship name, call sign, ship type, ship size, and antenna installation location, etc.; the operating status information includes battery status, satellite positioning status, AIS transceiver status, wireless network status, server connection status, and current authorization status, etc.

[0054] In a preferred embodiment, the configuration page can also display the device firmware version, hardware version, device unique identifier, server address, configuration record status, and the most recent configuration result, so that the user can confirm the device identity and perform subsequent parameter configuration operations.

[0055] IV. Parameter Hierarchical Management

[0056] To balance the ease of use of portable AIS devices with the security of MMSI identity parameters, in this embodiment, the main control module (1.1) or its configuration management function divides the device configuration parameters into controlled parameters, filing parameters and ordinary parameters.

[0057] The controlled parameters include at least the MMSI. As a core parameter for ship identity, the MMSI can only be written to the protected storage area by the main control module (1.1) after the remote authorization server (4) completes authentication and returns valid authorization information.

[0058] The filing parameters include ship name, call sign, ship type, ship size, antenna installation location, ship registry, or other static information related to ship identity but not belonging to MMSI. These parameters are modified by the user through the configuration page, but each modification saves the configuration record and can be uploaded to the remote authorization server (4) for filing.

[0059] The common parameters include wireless network name, wireless network password, data output rate, data output protocol, display unit, log upload switch, device display settings, or other device operating parameters. These parameters are configured locally by the user and can also be recorded as needed.

[0060] By implementing the above-mentioned hierarchical management of parameters, the device can avoid setting all configuration parameters to the same level of restriction, thereby ensuring MMSI security while retaining the ease of use of portable AIS transceivers.

[0061] V. Non-MMSI parameter configuration process

[0062] When a user needs to modify non-MMSI static parameters of a vessel, such as vessel name, call sign, vessel type, vessel size, and antenna installation location, the main control module (1.1) requires the user to confirm their identity or operation. After successful confirmation, the main control module (1.1) writes the modified parameters to the device storage area and records the modification time, modification content, operation source, and configuration result.

[0063] The modification records of the above non-MMSI parameters are stored locally on the device, or can be uploaded to a remote authorization server (4) for filing after the device is connected to the Internet. Since this process does not involve MMSI changes, it is not necessary to perform the authorization writing process at the same level as MMSI.

[0064] VI. MMSI Online Authorization Modification Process

[0065] When a user needs to modify MMSI parameters, the main control module (1.1) does not directly allow the user to write a new MMSI, but instead generates MMSI modification request data. The MMSI modification request data includes the device serial number, current MMSI, MMSI to be written, vessel name, call sign, vessel type, vessel size, antenna location information, user account information, device network address, request time, device firmware version, and other information used for authentication. The main control module (1.1) sends the above MMSI modification request data to the remote authorization server (4) via the wireless communication module (1.4).

[0066] After receiving the MMSI modification request data, the remote authorization server (4) performs authentication according to preset rules. The preset rules include whether the device serial number is valid, whether the device belongs to a model that allows remote configuration, whether the user account has configuration permissions, whether the format of the MMSI to be written is correct, whether the MMSI to be written matches the ship information, whether the MMSI has been bound to other devices, whether there are any abnormal configuration records on the device, whether the country or region where the device is located allows remote modification, and whether manual review is required.

[0067] When the remote authorization server (4) determines that the MMSI modification is permitted, the remote authorization server (4) returns authorization information to the portable AIS transceiver (1). The authorization information is a verification code, digital signature, encryption token, one-time license, authorization file, or other data that can be verified by the device. Preferably, the authorization information is bound to at least one of the following: device serial number, MMSI to be written, user account, vessel information, and validity period.

[0068] After receiving the authorization information, the main control module (1.1) verifies the completeness, validity period, binding relationship, and source legality of the authorization information. Only after the verification is passed will the main control module (1.1) allow the new MMSI to be written to the protected storage area; if the verification fails, the main control module (1.1) will refuse to write the new MMSI and will prompt the reason for the authorization failure through the display module (1.7) or the configuration page.

[0069] VII. MMSI Write Protection and Anomaly Handling

[0070] During the MMSI writing process, the main control module (1.1) employs an anti-interruption writing mechanism or a verification mechanism. For example, the main control module (1.1) first writes the MMSI to be written to a temporary storage area, and then performs data verification; if the verification is successful, the formal MMSI storage area is updated; if a power outage occurs or the verification fails during the writing process, the original MMSI remains unchanged, or it enters a pending recovery state. This method can reduce the risk of MMSI corruption due to power failure, communication abnormalities, or misoperation.

[0071] When the remote authorization server (4) rejects the MMSI modification request, or the device does not receive valid authorization information, the main control module (1.1) prohibits the writing of the MMSI to be written to the protected storage area, and prompts the reason for authorization failure through the display module (1.7) or configuration page. The reasons for authorization failure include incorrect MMSI format, user lack of permission, unregistered device, MMSI already in use, mismatched ship information, server connection failure, or expired authorization information.

[0072] 8. Unauthorized Launch Control

[0073] In a preferred operating mode, when the device has not written a valid MMSI, the MMSI has not been authorized, the MMSI is in a pending review state, or the device detects an abnormal MMSI configuration, the main control module (1.1) controls the AIS transceiver module (1.2) to prohibit the transmission of AIS messages, or to make the device operate only in AIS receiving mode. In this state, the device can still receive AIS information from other ships or shore stations, and can continue to complete the networking, configuration, and authorization process through the wireless communication module (1.4). Only after the MMSI authorization configuration is completed and verified will the main control module (1.1) allow the AIS transceiver module (1.2) to enter normal transmission mode.

[0074] In production, maintenance, or testing scenarios, the equipment can also enter a restricted testing mode. In restricted testing mode, the equipment does not transmit real AIS identity messages to external maritime AIS channels, or it is only verified through shielded loads, test ports, low-power test links, or internal simulated data.

[0075] IX. Configuration Log, Filing and Re-upload Mechanism

[0076] After the MMSI is successfully written, the main control module (1.1) generates a configuration completion record. This record includes the MMSI before modification, the MMSI after modification, the modification time, the device serial number, the result returned by the authorization server, the user account, the IP address, the vessel information, and the writing result. The main control module (1.1) saves this record locally on the device and uploads it to the remote authorization server (4) when the wireless network is available. The remote authorization server (4) saves this configuration record for subsequent querying, auditing, or tracing by the manufacturer, authorized service provider, or regulatory agency.

[0077] In offline scenarios, if the wireless communication module (1.4) is temporarily unable to connect to the remote authorization server (4), the main control module (1.1) retains the existing valid configuration and maintains normal operation; however, for new MMSI modification requests, the main control module (1.1) enters a pending authorization state and prohibits writing new MMSIs. If the authorization information previously issued by the remote authorization server (4) has an expiration date, the main control module (1.1) completes authorization verification and writing within the expiration date; if the expiration date has expired, the user is required to resubmit the authorization request.

[0078] When the network is unavailable, the device will temporarily store the modification records or operation logs of non-MMSI parameters locally and re-upload them to the remote authorization server when the network is restored (4). Through the configuration log and filing mechanism, even if the user modifies the MMSI or other ship information online, the relevant operations can be traced.

[0079] 10. Security Extension and Equivalent Implementation Methods

[0080] To further enhance security, the main control module (1.1) also sets login passwords, one-time verification codes, device physical button confirmations, QR code binding, user account logins, or two-factor authentication for accessing the configuration page. The main control module (1.1) also encrypts or verifies the integrity of the MMSI, authorization information, communication keys, and configuration logs stored locally on the device to prevent users from tampering with critical parameters through abnormal means.

[0081] In this embodiment, the main control module (1.1), AIS transceiver module (1.2), satellite positioning module (1.3), wireless communication module (1.4), battery management module (1.5), and display module (1.7) are implemented using independent circuit modules. Alternatively, two or more of these modules can be integrated into the same circuit board or the same chip system. For example, the wireless communication module (1.4) and the main control module (1.1) can be integrated into the same embedded processor, and the storage management function and configuration management function can be implemented as software functions within the main control module (1.1) instead of being set up as independent physical modules.

[0082] Example 1: Initial configuration based on a local WiFi hotspot

[0083] The user turns on the portable AIS transceiver (1). After the device is powered on, the wireless communication module (1.4) establishes a local wireless hotspot. The user connects to the wireless hotspot using the user access device (3) and accesses the device's built-in configuration page through a browser.

[0084] The configuration page displays the device serial number, firmware version, satellite positioning status, battery level, wireless network status, and current MMSI status. If the device has not yet been written with a valid MMSI, the configuration page indicates that the device is currently in an unauthorized transmission state, allowing only AIS reception, network access, and parameter configuration.

[0085] The user inputs the ship name, call sign, ship type, ship size, antenna installation location, and MMSI. The main control module (1.1) determines that the configuration request contains the MMSI and initiates the MMSI online authorization process. After the device connects to the Internet via the wireless communication module (1.4), it sends the MMSI modification request data to the remote authorization server (4). After the remote authorization server (4) completes authentication, it returns authorization information to the device. After the device verifies the information, it writes the MMSI and displays "Configuration Successful" on the configuration page. Subsequently, the AIS transceiver module (1.2) allows the transmission of AIS messages containing the MMSI.

[0086] Example 2: MMSI Modification During Ship Replacement

[0087] The user takes the portable AIS transceiver (1) from the first vessel to the second vessel for use. Since the second vessel has a different MMSI, the user needs to modify the MMSI parameters in the device.

[0088] The user enters the MMSI and related vessel information of the second vessel through the configuration page. The main control module (1.1) uploads the original MMSI, new MMSI, device serial number, user account, access IP, current location information, and vessel information to the remote authorization server (4). The remote authorization server (4) reviews the information according to preset rules. After the review is approved, the server returns the authorization information bound to the device serial number and new MMSI to the device.

[0089] After verifying the authorization information, the device writes the new MMSI to the protected storage area and uploads the old MMSI, new MMSI, and modification record to the remote authorization server (4) for filing. If the review fails, the device refuses to modify the MMSI and continues to maintain the original configuration or enters the receive-only mode.

[0090] Example 3: Online Modification of Non-MMSI Vessel Information

[0091] When users only need to modify non-MMSI information such as vessel size, vessel type, call sign, or antenna installation location, they can submit a modification request through the local configuration page or the server page. The main control module (1.1) recognizes these parameters as filing parameters, writes them to the storage area after completing basic user identity verification or operation confirmation, and generates a configuration log at the same time.

[0092] The device immediately uploads the configuration log to the remote authorization server (4). The remote authorization server (4) saves the parameters before and after the modification, the device serial number, user account, access time and IP address for later query. Since this process does not involve MMSI changes, it is not necessary to perform an authorization write process at the same level as MMSI.

[0093] Example 4: Handling when the network is unavailable

[0094] At sea or in remote areas, the device may be temporarily unable to access the remote authorization server (4). For MMSI parameters that have been authorized and are working properly, the device continues to receive and transmit AIS normally. For modifications to non-MMSI parameters, the device saves the log locally and retransmits it to the remote authorization server after the network is restored (4).

[0095] For new MMSI modification requests, the device requires the user to wait for the network to recover before completing authentication. Alternatively, it can generate offline application information according to preset rules, which the user can then submit to the remote authorization server (4) on another networked device to obtain an authorization code. The device can only write the new MMSI after receiving a valid offline authorization code and verifying it.

[0096] The above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the present invention, and the patent protection scope of the present invention should be defined by the claims.

Claims

1. A portable AIS transceiver supporting remote authentication configuration, characterized in that: The device includes a portable housing, and within the portable housing are a main control module, an AIS transceiver module, a satellite positioning module, a wireless communication module, a battery management module, a rechargeable battery, and a display module. The AIS transceiver module is electrically connected to the main control module and configured to receive and / or send AIS messages. The satellite positioning module is electrically connected to the main control module and configured to acquire location information. The wireless communication module is electrically connected to the main control module and configured to enable data communication between the portable AIS transceiver and user access devices and / or remote authorization servers. The battery management module is electrically connected to the rechargeable battery and the main control module and configured to manage the charging and discharging of the rechargeable battery and / or monitor its power supply status. The display module... The display module is electrically connected to the main control module and is configured to display the device's operating status and / or configuration status. The main control module is configured to provide or control an online configuration interface, receive ship static information configuration requests, and when the configuration request includes an MMSI parameter modification request, send the MMSI parameter modification request to a remote authorization server for authentication via the wireless communication module. The main control module is also configured to allow the new MMSI parameters to be written to the device storage area only after receiving and verifying the MMSI modification authorization information returned by the remote authorization server, and to control the AIS transceiver module to perform AIS transmission based on the written MMSI parameters. The device storage area is used to store MMSI parameters, ship static information, device identification information, and configuration logs.

2. A portable AIS transceiver supporting remote authentication configuration function according to claim 1, characterized in that: The battery management module includes one or more of the following: a charging management circuit, a power detection circuit, a voltage detection circuit, a current detection circuit, a temperature detection circuit, and a protection circuit. The rechargeable battery is a lithium-ion battery or a lithium polymer battery. The portable housing (1.8) is a portable housing that does not require permanent installation on the hull. It is provided with one or more of the following: a charging interface, an antenna interface for connecting an external AIS / VHF antenna, an antenna interface for connecting an external GNSS / GPS antenna, buttons, indicator lights, a display window, or a mounting and fixing structure.

3. A portable AIS transceiver supporting remote authentication configuration function according to claim 2, characterized in that: The AIS transceiver module is a Class A, Class B, or Class B+ AIS transceiver module, configured to transmit AIS messages containing MMSI, ship position, speed, heading, and / or ship static information on the AIS operating frequency band, and to receive AIS messages from other AIS targets or shore stations. The wireless communication module includes a WiFi communication module, which supports access point mode and / or client mode. In access point mode, the user access device can connect to the wireless network generated by the portable AIS transceiver and access the local configuration page. In client mode, the portable AIS transceiver can connect to an external wireless router, mobile hotspot, or shipboard network to access a preset server address.

4. A portable AIS transceiver supporting remote authentication configuration function according to claim 3, characterized in that: The online configuration interface includes a local webpage provided by the built-in Web service program of the portable AIS transceiver, a remote webpage provided by a remote authorization server or a preset server, a mobile application configuration interface, or a combination thereof. The main control module is configured to process the ship name, call sign, ship type, ship size, antenna position, ship registry, port of destination, or other non-MMSI ship static information as filing parameters, allowing users to modify them through the online configuration interface, and recording the modified content, modification time, device identification information, operation source, and / or user access information to the local device storage area and / or uploading them to the remote authorization server for filing.

5. A portable AIS transceiver supporting remote authentication configuration function according to claim 4, characterized in that: The MMSI modification authorization information includes one or more of the following: verification code, digital signature, encryption token, one-time write permission, number of authorizations, validity period, device serial number binding information, and MMSI and vessel information matching results. Before writing new MMSI parameters, the main control module verifies the binding relationship between the MMSI modification authorization information and the local device identification information, the MMSI parameters to be written, user account information, vessel static information, and / or validity period.

6. A portable AIS transceiver supporting remote authentication configuration function according to claim 5, characterized in that: The configuration log includes at least one of the following information: device serial number, hardware version, firmware version, original MMSI parameters, new MMSI parameters, vessel name, call sign, vessel type, vessel size, user account, access time, source IP address, wireless network identifier, geographical location, configuration result, authorization server return result, and exception information. The device storage area includes non-volatile memory, and the MMSI parameters are stored in a protected storage area. The protected storage area prevents unauthorized modification of the MMSI parameters through firmware permission control, encrypted storage, write count control, access password, secure boot mechanism, or a combination thereof.

7. A portable AIS transceiver supporting remote authentication configuration function according to claim 5 or 6, characterized in that: The main control module is configured to treat the MMSI parameter as a controlled configuration parameter, prohibit writing new MMSI parameters when no valid authorization information is returned by the remote authorization server, or control the AIS transceiver module to prohibit the transmission of AIS messages or only allow the portable AIS transceiver to work as an AIS receiver. The main control module is also configured to lock or restrict further modification of the MMSI parameter after it has been modified, until authentication is completed again through the remote authorization server.

8. A portable AIS transceiver supporting remote authentication configuration function according to claim 7, characterized in that: The display module includes LED indicator lights, a buzzer, an LCD screen, an OLED screen, an e-ink screen, or a combination thereof, for displaying or indicating battery level, charging status, satellite positioning status, AIS reception status, AIS transmission status, network connection status, server connection status, MMSI authorization status, configuration completion status, and / or configuration failure status. The portable AIS transceiver also includes a local data output interface, which includes one or more of an NMEA 0183 interface, an NMEA2000 interface, a USB interface, a Bluetooth interface, or a WiFi data output interface, for outputting AIS target data, positioning data, or device status data to a shipborne display terminal or mobile terminal.

9. A portable AIS transceiver supporting remote authentication configuration function according to claim 7, characterized in that: The main control module is also configured to upload configuration completion confirmation information to the remote authorization server after completing the writing of MMSI parameters, so that the remote authorization server can save the configuration results and provide them to equipment suppliers, authorized service providers or regulatory authorities for query. The main control module is also configured to maintain the AIS reception and / or transmission corresponding to the authorized MMSI parameters when the network is unavailable, and to re-upload the locally saved configuration logs, operation logs or non-MMSI parameter modification records after the network is restored.

10. The portable AIS transceiver is a portable AIS transceiver terminal that can be temporarily carried and used between different ships. Through remote authentication and configuration functions, it can complete the reconfiguration of MMSI parameters under controlled, traceable, and supervised conditions when changing ships. The main control module is configured to control the AIS transceiver module to prohibit the transmission of real AIS identity messages to external AIS channels, or only allow restricted testing through shielded load, test port, low-power test link, or internal simulated data when no valid MMSI parameters are written, the MMSI parameters are not authorized, the MMSI parameters are in a pending review state, or an abnormal MMSI configuration is detected.

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