A converged communication gateway suitable for polar navigation

Abstract

The application provides a fusion communication gateway suitable for polar navigation. The fusion communication gateway comprises a core control module, a 5G communication module, a multi-interface adaptation module, a network detection module, a data forwarding module, a position positioning module, a polar signal enhancement module and a power module. The core control module pre-stores a maritime satellite coverage map, and according to the real-time position and network state, the active link is automatically selected in the priority order of 5G first, VSAT second and Iridium last; when switching, the differentiated cache time length is selected according to the switching type to ensure data integrity. The application realizes seamless switching of communication in nearshore, mid-low latitude ocean and high latitude areas, and guarantees communication continuity, adaptability and cost economy.

Description

Technical Field

[0001] This invention relates to the field of ship communication technology, and in particular to a converged communication gateway suitable for polar navigation. Background Technology

[0002] With the continuous development of the global shipping industry, the navigation range of ships has significantly expanded from traditional near-shore and low-to-mid-latitude open ocean areas to high-latitude and even polar seas. This change has placed comprehensive and high demands on ship-to-shore communication networks. Currently, the mainstream ship communication methods mainly include three types: 5G mobile communication in near-shore areas, which has the advantages of high bandwidth and low cost; maritime VSAT satellite communication covering low-to-mid-latitude sea areas, which can provide moderate bandwidth and relatively wide coverage; and Iridium satellite communication, which can achieve global coverage including the poles. However, all three methods have inherent limitations. Maritime VSAT communication is limited by the coverage range of geostationary orbit satellite beams, and the signal is severely attenuated or even completely lost in high-latitude regions; while Iridium communication can achieve seamless global coverage, its communication bandwidth is relatively narrow, and its usage cost is significantly higher than that of maritime VSAT.

[0003] To address the challenges of multi-regional navigation, several solutions supporting multi-communication link switching have emerged in existing technologies. However, these solutions have significant drawbacks. Some solutions only support binary switching between 5G and one type of satellite communication, failing to fully utilize the complementary coverage characteristics of maritime VSAT and Iridium satellites. Other solutions, while attempting to integrate multiple satellite links, typically employ hardware designs that embed specific satellite communication modules, resulting in complex system structures, poor compatibility, and an inability to flexibly adapt to various external maritime VSAT or Iridium satellite terminal equipment already equipped on ships, increasing hardware modification costs for users. A more critical issue lies in the decision-making logic for link switching. Existing technologies largely rely on simple signal strength detection, or even require manual judgment, failing to effectively link with accurate real-time ship location information and predicted coverage maps from maritime satellites. This leads to frequent false handovers due to signal fluctuations when ships navigate to high-latitude regions at the edge of maritime VSAT coverage. Communication may also be interrupted after completely leaving the coverage area because equipment is still attempting to reconnect to an invalid VSAT link. In such cases, manual intervention to switch to Iridium is necessary, with response delays of several minutes, posing safety risks in the rapidly changing polar navigation environment. Furthermore, current technology lacks a clear hierarchical prioritization strategy to balance communication performance and cost, and also lacks a mechanism to ensure seamless data transmission during link switching, making data loss prone to occur.

[0004] In summary, existing ship communication gateways are inadequate in terms of hardware compatibility, precise intelligent switching, cost-effectiveness, and data continuity, failing to meet the modern communication needs of automated navigation across all regions and latitudes. Therefore, there is an urgent need for a converged communication gateway suitable for polar navigation. Summary of the Invention

[0005] To address the problems of poor compatibility, inability to connect to external maritime VSAT and Iridium satellite equipment, lack of precise location linkage in switching logic, easy communication interruption in high-latitude regions, and the need for manual intervention in switching in the existing technologies, this invention proposes a converged communication gateway suitable for polar navigation.

[0006] The present invention specifically provides the following technical solution:

[0007] A converged communication gateway suitable for polar navigation includes: a core control module, a 5G communication module, a multi-interface adaptation module, a network detection module, a data forwarding module, a location positioning module, a polar signal enhancement module, and a power supply module;

[0008] The core control module is pre-stored with maritime satellite coverage data; the 5G communication module is used to access the near-shore 5G network.

[0009] The multi-interface adapter module is equipped with a first network port and a second network port. The first network port is used for pluggable connection to an external maritime VSAT communication device, and the second network port is used for pluggable connection to an external Iridium communication device. The multi-interface adapter module also includes an interface protocol conversion unit for converting the private communication protocols of the external maritime VSAT communication device and the external Iridium communication device into a unified internal protocol. The network detection module is used to detect the network status parameters of the communication device in real time. The data forwarding module includes a buffer unit, which is connected to the ship's local area network, the 5G communication module, and the multi-interface adapter module respectively, for forwarding data between the ship's local area network and the external communication link. The location positioning module... The system is used to acquire the ship's location information in real time. The polar signal enhancement module is connected to the multi-interface adapter module and is used to focus and enhance the satellite signals received by the external maritime VSAT communication equipment and the external Iridium communication equipment in the polar environment. The ship's power supply is converted by the power module to supply power to each module. The core control module receives the location data from the position positioning module and the network status data from the network detection module. Combined with the pre-stored maritime satellite coverage map information, it sends control commands to the multi-interface adapter module, the data forwarding module, and the 5G communication module. The 5G communication module, the external maritime VSAT equipment, and the external Iridium equipment transmit external network data to the data forwarding module through their respective interfaces, while also providing feedback on their own working status.

[0010] Furthermore, the core control module is configured as follows:

[0011] Based on the real-time location information obtained by the location positioning module and the pre-stored maritime satellite coverage map data, combined with the network status parameters of each communication link detected by the network detection module, a primary link is selected from the 5G communication module, the external maritime VSAT communication device, and the external Iridium communication device according to a preset priority strategy, and the data forwarding module is controlled to transmit the data of the ship's local area network through the selected primary link.

[0012] When performing an active link switch, the corresponding cache duration is selected from multiple preset cache durations according to the switch type, and a cache instruction containing the selected cache duration is sent to the data forwarding module to control the data forwarding module to enable the cache unit to temporarily store the data to be forwarded for the specified cache duration. After the target active link establishes a stable connection, the cached data is forwarded through the target active link.

[0013] The switching type includes at least a first type and a second type. The first type is switching between the 5G communication module and any satellite communication device, and the second type is switching between the external maritime VSAT communication device and the external Iridium communication device. The buffer duration corresponding to the second type is greater than the buffer duration corresponding to the first type.

[0014] Furthermore, the preset priority strategy is as follows:

[0015] When the 5G communication module is available, the 5G communication module shall be selected as the active link.

[0016] When the 5G communication module is unavailable and the real-time location information indicates that the ship is within the coverage area defined by the maritime satellite coverage map data, and the external maritime VSAT communication device is available, the external maritime VSAT communication device is selected as the active link;

[0017] When the 5G communication module is unavailable and the real-time location information indicates that the ship is outside the coverage area defined by the maritime satellite coverage map data, or when the external maritime VSAT communication device is unavailable, if the external Iridium communication device is available, then the external Iridium communication device is selected as the active link.

[0018] Furthermore, the core control module also includes a digital twin prediction unit, which is configured to: construct a mirror image of the communication link status of the ship's current navigation area in a virtual space based on the real-time location information, the network status parameters, and the pre-stored maritime satellite coverage map data; when the real-time position of the ship is detected to be close to the coverage boundary defined by the maritime satellite coverage map data, simulate the link quality evolution trend of different switching paths in the virtual space, and generate a prediction result including switching timing and cache duration suggestions; based on the prediction result, send an activation command to the corresponding target satellite communication equipment in advance, so that the target satellite communication equipment enters the ready state in advance, and adjust the caching strategy of the data forwarding module according to the cache duration suggestion in the prediction result;

[0019] When an anomaly in the polar space environment is detected, the impact of the anomaly on the communication link is simulated in the virtual space, and an emergency switching plan is generated; wherein, the anomaly in the polar space environment includes at least one of aurora activity and geomagnetic disturbance, and the core control module identifies the anomaly based on the signal attenuation characteristics detected by the network detection module.

[0020] Furthermore, the polar signal enhancement module also includes an intelligent anti-interference unit, which is configured as follows:

[0021] Receive real-time link quality parameters from the network detection module, the quality parameters including at least bit error rate, signal-to-noise ratio and signal phase noise;

[0022] Based on the change pattern of the real-time link quality parameters, and combined with the real-time location information provided by the location positioning module, it is identified whether the current communication link is subject to specific interference caused by the polar space environment, which includes aurora activity or geomagnetic disturbances.

[0023] When a specific interference is detected, a dynamic anti-interference command is generated. The command includes: sending it to the data forwarding module to dynamically enhance the forward error correction coding level of the data transmitted by the external maritime VSAT communication device or the external Iridium communication device link; and sending it to the interface protocol conversion unit of the multi-interface adaptation module to dynamically adjust the adaptive equalizer parameters in the signal demodulation process to suppress signal distortion introduced by the specific interference.

[0024] When the specific interference identified is ionospheric scintillation interference caused by aurora activity and the signal packet loss rate detected by the network detection module exceeds a preset threshold, the dynamic anti-interference instruction further includes: sending it to the data forwarding module to enable a multi-path data redundancy transmission mechanism.

[0025] Furthermore, the core control module is configured to execute cost-aware link selection constraints:

[0026] The constraint is based on the preset priority strategy, with the addition of a cost judgment dimension;

[0027] When there are multiple optional links according to the priority strategy, the core control module accesses the pre-stored or real-time acquired link tariff information, and calculates the unit data traffic communication cost of each optional link in combination with the available bandwidth of each optional link monitored in real time by the network detection module.

[0028] Select the available link with the lowest communication cost per unit of data traffic as the final active link;

[0029] The scenario of multiple selectable links includes at least the following: the ship is located within the maritime VSAT coverage area, and multiple external maritime VSAT communication devices from different operators are simultaneously connected and available through the multi-interface adapter module.

[0030] Furthermore, the caching unit of the data forwarding module is configured to implement a service-aware dynamic caching mechanism:

[0031] The cache unit can identify the service type of the data flowing through it;

[0032] When sending a caching instruction, the core control module also dynamically adapts the allocation of caching resources and the specific value of the caching duration according to the main business type of the data to be cached.

[0033] For business data identified as having high reliability requirements, a protected cache area is allocated and a longer cache duration is adopted to ensure data integrity during link switching.

[0034] Furthermore, the data forwarding module also includes a transmission protocol optimization unit, which is configured to:

[0035] When the active link is the external maritime VSAT communication device or the external Iridium communication device, the end-to-end transmission protocol will be switched from the TCP protocol to a customized transmission protocol based on UDP.

[0036] The customized transmission protocol integrates adaptive congestion control and intelligent retransmission mechanisms. The adaptive congestion control mechanism dynamically adjusts the data transmission window based on the link packet loss rate and round-trip delay fed back by the network detection module in real time. The intelligent retransmission mechanism dynamically calculates differentiated retransmission timeout values ​​for different data packets based on the inherent high latency characteristics of satellite links, so as to avoid false retransmissions and decreased link utilization caused by unreasonable fixed timeout settings.

[0037] Furthermore, the core control module is also connected to a configuration management and remote maintenance interface unit; the configuration management and remote maintenance interface unit is configured as follows:

[0038] It provides a local human-computer interaction interface and a remote management channel for visual configuration and updating of the maritime satellite coverage map data, the preset priority strategy, the availability threshold of each link and the caching strategy parameters;

[0039] Through the currently available active links, a secure connection is established with the shore-based management platform, and the operation status logs, link switching records, and working parameters of each external communication device of the converged communication gateway are periodically uploaded.

[0040] Receive remote commands from the shore-based management platform, including but not limited to: dynamic update packages of the maritime satellite coverage map data, diagnostic and reset commands for specific external communication devices, and batch configuration of global policy parameters.

[0041] This invention also provides an automatic communication link switching method suitable for polar navigation, comprising the following steps:

[0042] Step S1: After the gateway starts, the core control module initializes each module and loads the pre-stored maritime satellite coverage map data.

[0043] Step S2: The location positioning module starts real-time positioning, and the network detection module starts network status detection of the 5G communication module, the external maritime VSAT communication equipment, and the external Iridium communication equipment.

[0044] Step S3: The digital twin prediction unit of the core control module constructs a mirror image of the communication link status of the ship's current navigation area in the virtual space based on real-time location information, network status parameters, and pre-stored maritime satellite coverage map data, and generates a prediction result that includes suggestions on switching timing and buffer duration.

[0045] Step S4: The core control module determines the currently available active links based on real-time location information and network status parameters, combined with the prediction results, according to a preset priority strategy.

[0046] Step S5: If the current active link is different from the link being used, a switching operation is performed: The core control module selects the corresponding cache duration from a number of preset cache durations according to the switching type, sends a cache instruction containing the selected cache duration to the data forwarding module, enables the caching mechanism to temporarily store data for the cache duration, and simultaneously instructs the target communication link to establish a connection. After the target link stabilizes, the cached data is forwarded through the target link, and the original link is closed.

[0047] Step S6: During navigation, when the polar signal enhancement module detects that the ambient temperature is lower than the preset threshold, it focuses and enhances the satellite signal; when it detects interference unique to the polar environment, it activates the intelligent anti-interference unit, identifies the type of interference based on real-time link quality parameters and location information, and generates dynamic anti-interference instructions. The anti-interference instructions include at least adjusting the forward error correction coding level, adjusting the adaptive equalizer parameters, and enabling multi-path data redundancy transmission under specific conditions.

[0048] Step S7: Continue executing steps S2 to S6 to achieve dynamic automatic switching of communication links and real-time optimization of signal quality.

[0049] This invention offers the following beneficial technical effects: It provides a converged communication gateway suitable for polar navigation. This gateway achieves plug-and-play compatibility with various external maritime VSAT and Iridium communication devices through a dedicated uplink network port of a multi-interface adapter module, solving hardware compatibility issues. The core control module combines GPS / BeiDou real-time location with maritime satellite coverage maps and introduces a digital twin prediction mechanism to execute hierarchical automatic switching logic from 5G to maritime VSAT coverage areas to Iridium, achieving precise and seamless switching from nearshore and ocean to polar regions. Through cost-aware link optimization and service-aware dynamic caching mechanisms, it optimizes overall communication costs while ensuring highly reliable data transmission. Furthermore, for the harsh polar environment, integrated signal enhancement and intelligent anti-interference units effectively improve communication robustness, while the remote maintenance interface enhances system manageability, comprehensively ensuring the continuity, economy, and high reliability of polar navigation communication. Attached Figure Description

[0050] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a block diagram of a converged communication gateway suitable for polar navigation, provided as an embodiment of the present invention.

[0052] Figure 2 A structural block diagram of the core control module provided for embodiments of the present invention.

[0053] Figure 3 A schematic diagram of a differentiated caching strategy provided for an embodiment of the present invention.

[0054] Figure 4 This is a schematic diagram illustrating configuration management and remote maintenance as provided in an embodiment of the present invention.

[0055] Figure 5 A flowchart illustrating the three-layer automatic switching process provided for embodiments of the present invention. Detailed Implementation

[0056] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0057] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and the structure and / or function of any markings described herein are merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the apparatus and / or practical methods.

[0059] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application.

[0060] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these marked details.

[0061] The purpose of this invention is to provide a converged communication gateway suitable for polar navigation to achieve seamless switching of communication between nearshore, mid-to-low latitude ocean and high latitude regions, ensuring communication continuity, adaptability and cost-effectiveness.

[0062] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0063] All formula calculations involved in this invention are presented after parameter normalization and dimension removal.

[0064] refer to Figure 1 The block diagram of the converged communication gateway provided in this embodiment of the invention is shown. The hardware entity of the gateway includes a core control module, a 5G communication module, a multi-interface adaptation module, a network detection module, a data forwarding module, a location positioning module, a polar signal enhancement module, and a power supply module. Each module is connected and works collaboratively through specific circuit interfaces.

[0065] The core control module employs a domestically developed high-performance microprocessor architecture. Its internal memory pre-stores maritime satellite coverage map data, including parameters such as coverage latitude range and signal coverage boundaries, as well as a three-layer switching strategy program for "5G to external maritime, then to external Iridium." The core control module connects to a multi-interface adapter module via a UART interface, to a 5G communication module via an SPI interface, to a network detection module and a location positioning module via GPIO interfaces, to a data forwarding module via a GMII interface, to a polar signal enhancement module via a dedicated interface, and is connected to a 12V power supply via a power interface. As the core logic unit of the gateway, its function is to receive real-time location data from the location positioning module and link status data from the network detection module, combine this with the pre-stored maritime satellite coverage map, determine the optimal communication link based on built-in strategies, and send control commands to other relevant modules.

[0066] The 5G communication module uses an industrial-grade 5G module, supporting SA / NSA dual-mode and covering mainstream frequency bands such as N41 / N78 / N79. It connects to the SPI interface of the core control module via a PCIe interface for control signaling interaction, and connects to the data forwarding module via an Ethernet interface for user data transmission. The power interface is connected to 5V. This module is responsible for accessing the 5G network in near-shore areas and can provide real-time feedback of signal strength RSRP, bandwidth, packet loss rate, and other status data to the network detection module.

[0067] The multi-interface adapter module adopts a standardized Ethernet interface design, integrating two independent RJ45 uplink ports and an interface protocol conversion unit. The first uplink port is used to detachably connect to external maritime VSAT communication equipment via a standard network cable, and the second uplink port is used to detachably connect to external Iridium communication equipment. This module communicates bidirectionally with the core control module via a UART interface to transmit device status and control commands. The interface protocol conversion unit internally stores drivers or protocol stacks for multiple brands and models of external maritime VSAT / Iridium devices. It can automatically identify the type and model of the connected device, load the corresponding driver, and convert the device's proprietary communication protocol into a unified internal protocol, thereby achieving plug-and-play functionality.

[0068] The network detection module has a built-in dedicated integrated chip and connects to the core control module via interfaces such as GPIO. It also communicates with the 5G communication module and the multi-interface adapter module to directly obtain the physical layer parameters of each link. Its task is to detect key network parameters of the 5G communication module, external maritime VSAT equipment, and external Iridium satellite equipment in real time, including signal strength, bandwidth, packet loss rate, and signal-to-noise ratio, and to feed this detection data back to the core control module in real time.

[0069] The data forwarding module incorporates a high-performance switch chip and a 32MB cache unit. It connects to the core control module via a GMII interface to receive control commands. This module has one downlink RJ45 interface for connecting to the ship's local area network; and two uplink RJ45 interfaces, connecting to the 5G communication module and the multi-interface adapter module respectively. This allows for data path connections with external maritime VSAT equipment and external Iridium satellite equipment via the multi-interface adapter module. Upon receiving a cache command from the core control module, the data forwarding module activates the cache unit according to the specified cache duration, temporarily storing all data to be sent until the target link stabilizes before forwarding.

[0070] The positioning module employs a GPS / BeiDou dual-mode positioning unit, achieving a positioning accuracy of ±5m. It connects to the core control module via an interface, collecting the ship's latitude and longitude position data in real time at a high update frequency of 1 time per second, and feeding this data back to the core control module, providing reliable location data for accurate determination of the coverage area.

[0071] The polar signal enhancement module connects to a multi-interface adapter module to enhance satellite signals received by external maritime VSAT communication equipment and external Iridium communication equipment in polar environments. This module includes a three-dimensional Luneburg lens antenna unit, a cryogenic heating unit, and an intelligent anti-interference unit. The three-dimensional Luneburg lens antenna unit adopts a multi-layer dielectric sphere structure, composed of concentrically nested dielectric layers with different dielectric constants, enabling precise focusing of incident satellite electromagnetic waves onto the feed source. To adapt to the extreme low-temperature environment of the polar regions, its dielectric material is a composite ceramic material with a dielectric constant change of less than 2% over a wide temperature range of -50℃ to +50℃, ensuring stable antenna performance. The cryogenic heating unit includes a heating film attached to the surface of the three-dimensional Luneburg lens antenna unit and a temperature sensor for real-time monitoring of the ambient temperature. When the temperature sensor detects that the ambient temperature is lower than the preset threshold of -20℃, the core control module controls the heating film to start. The heating power of the heating film is dynamically adjusted according to the difference between the real-time temperature and -20℃, so that the working temperature of the three-dimensional Luneburg lens antenna unit is stably maintained in the range of -20℃ to 0℃. This avoids performance degradation caused by low temperature and prevents energy waste caused by overheating.

[0072] Preferably, the polar signal enhancement module further includes an intelligent anti-interference unit. The intelligent anti-interference unit is configured to: receive real-time link quality parameters from the network detection module, which include at least bit error rate, signal-to-noise ratio, and signal phase noise; based on the change pattern of the real-time link quality parameters and combined with real-time location information provided by the location module, identify whether the current communication link is subject to specific interference caused by the polar space environment, including auroral activity or geomagnetic disturbances; and generate a dynamic anti-interference command when specific interference is identified. This command includes: sending it to the data forwarding module to dynamically enhance the forward error correction coding level of data transmitted through the link to external maritime VSAT communication equipment or external Iridium communication equipment; and sending it to the interface protocol conversion unit of the multi-interface adaptation module to dynamically adjust the adaptive equalizer parameters during signal demodulation to suppress signal distortion introduced by specific interference. Specifically, when the identified specific interference is ionospheric scintillation interference caused by auroral activity and the signal packet loss rate detected by the network detection module exceeds a preset threshold, the dynamic anti-interference command further includes: sending it to the data forwarding module to enable a multi-path data redundancy transmission mechanism. This mechanism significantly increases the probability of successful data transmission when aurora activity causes sudden deep signal fading by sending the same data packet through different paths or by repeatedly sending it on the same link using time diversity.

[0073] The power module employs a high-efficiency DC-DC power supply, with an input compatible with the ship's standard 24V / 48V main power supply, and is equipped with a backup battery interface. It outputs two stable voltages: 5V / 10A and 12V / 5A, which are connected to the power interfaces of their respective modules. The module features comprehensive protection functions, including overvoltage protection (when the input voltage reaches 60V), overcurrent protection, and short-circuit protection, ensuring stable and safe power supply to the gateway under various shipboard power environments.

[0074] Figure 2 The block diagram of the core control module is shown. The core function of the core control module is to select one of the following as the active link based on the real-time location information obtained by the location module and the pre-stored maritime satellite coverage map data, combined with the network status parameters of each communication link detected by the network detection module, according to a preset priority strategy: the 5G communication module, the external maritime VSAT communication equipment, and the external Iridium communication. Then, it controls the data forwarding module to transmit the data of the ship's local area network through the selected active link.

[0075] The preset priority strategy is as follows:

[0076] When the 5G communication module is available, it is prioritized as the active link. When the 5G communication module is unavailable and the real-time location information indicates that the vessel is within the coverage area defined by the maritime satellite coverage map data, and the external maritime VSAT communication equipment is available, the external maritime VSAT communication equipment is selected as the active link. When the 5G communication module is unavailable and the real-time location information indicates that the vessel is outside the coverage area defined by the maritime satellite coverage map data, or the external maritime VSAT communication equipment is unavailable, if the external Iridium communication equipment is available, the external Iridium communication equipment is selected as the active link.

[0077] During active link handover, the core control module selects a corresponding buffer duration from a set of preset buffer durations based on the handover type. It then sends a buffer command containing the selected buffer duration to the data forwarding module, controlling the module to activate the buffer unit to temporarily store data to be forwarded for that duration. Once a stable connection is established with the target active link, the buffered data is forwarded through that link. The handover types include at least a first type and a second type. The first type involves handover between a 5G communication module and any satellite communication device, while the second type involves handover between an external maritime VSAT communication device and an external Iridium communication device. The buffer duration for the second type is longer than that for the first type. Based on actual measurements, the buffer duration for the first type can be set to 5 seconds, and the buffer duration for the second type can be set to 15 seconds. Figure 3 This diagram illustrates the strategy of using differentiated buffer durations based on different switching types. The horizontal axis represents time, the vertical axis represents link status and data flow, buffer intervals are represented by dashed rectangles, and critical events are marked with dashed lines and circles. Figure 3 In the diagram, (a) is the timing diagram for the first type of handover, namely the handover between the 5G communication module and any satellite communication device. When the handover occurs, the core control module sends a caching instruction to the data forwarding module, and the caching unit enables a 5-second caching duration to temporarily store data. After the target link is established, the cached data and real-time data are forwarded together, and the original link is closed. (b) is the timing diagram for the second type of handover, namely the handover between the external maritime VSAT communication device and the external Iridium communication device. When the handover occurs, the core control module sends a caching instruction to the data forwarding module, and the caching unit enables a 15-second caching duration to temporarily store data. After the target link is established, the caching data and real-time data are forwarded together, and the original link is closed.

[0078] Preferably, the core control module further includes a digital twin prediction unit. This unit is configured to: construct a virtual image of the communication link status of the ship's current navigation area based on real-time location information, network status parameters, and pre-stored maritime satellite coverage map data; when the ship's real-time position is detected to be close to the coverage boundary defined by the maritime satellite coverage map data, simulate the link quality evolution trend of different switching paths in the virtual space, and generate a prediction result including switching timing and buffer duration suggestions; based on the prediction result, send an activation command to the corresponding target satellite communication equipment in advance, enabling the target satellite communication equipment to enter the ready state in advance, and adjust the caching strategy of the data forwarding module according to the buffer duration suggestions in the prediction result. When an anomaly in the polar space environment is detected, the digital twin prediction unit also simulates the impact of the anomaly on the communication link in the virtual space and generates an emergency switching plan. The anomaly in the polar space environment includes at least one of aurora activity and geomagnetic disturbances, and the core control module identifies the anomaly based on the signal attenuation characteristics detected by the network detection module.

[0079] Preferably, the core control module is also configured to execute cost-aware link selection constraints. This constraint adds a cost judgment dimension to the preset priority strategy. When multiple selectable links exist according to the priority strategy, the core control module accesses pre-stored or real-time acquired link tariff information and, combined with the available bandwidth of each selectable link monitored in real-time by the network detection module, calculates the unit data traffic communication cost of each selectable link; and selects the available link with the lowest unit data traffic communication cost as the final active link. The scenario of multiple selectable links includes at least the following: the vessel is located within the maritime VSAT coverage area, and multiple external maritime VSAT communication devices from different operators are simultaneously connected and available through a multi-interface adapter module.

[0080] Preferably, the caching unit of the data forwarding module is configured to implement a service-aware dynamic caching mechanism. The caching unit can identify the service type of the data flowing through it. When sending caching instructions, the core control module also dynamically adapts the allocation of caching resources and the specific value of the caching duration according to the main service type of the data to be cached. For example, for service data identified as having high reliability requirements, such as navigation control instructions and emergency voice communications, a protected caching area is allocated and a longer caching duration is used to ensure data integrity during link switching.

[0081] Preferably, the data forwarding module further includes a transmission protocol optimization unit. Considering the high latency and high error rate of satellite communication links, the traditional TCP protocol performs poorly on such links. Therefore, when the active link switches to an external maritime VSAT communication device or an external Iridium communication device, the transmission protocol optimization unit switches the end-to-end transmission protocol from TCP to a customized UDP-based transmission protocol. This customized transmission protocol integrates adaptive congestion control and intelligent retransmission mechanisms. The adaptive congestion control mechanism intelligently distinguishes between channel errors and network congestion based on the real-time feedback of the link packet loss rate and round-trip delay from the network detection module: when the packet loss rate increases but the round-trip delay does not increase significantly, it is determined to be a channel error, and the transmission rate is not blindly reduced; when the packet loss rate increases and the round-trip delay increases significantly, it is determined to be network congestion, and the transmission rate is reduced proportionally. The intelligent retransmission mechanism dynamically calculates differentiated retransmission timeout values ​​for different data packets based on the inherent high latency characteristics of satellite links, avoiding false retransmissions and decreased link utilization caused by unreasonable fixed timeout settings. This customized transmission protocol also includes a collaborative optimization mechanism for forward error correction and automatic repeat request. This mechanism is configured as follows: the network detection module monitors the packet loss pattern of the link in real time and statistically analyzes the time interval distribution of packet loss events per unit time. If the packet loss interval follows a Poisson distribution, it is determined to be random sporadic packet loss. In this case, forward error correction coding is prioritized for data recovery. By adding redundant error correction codes to the data packets, errors are directly corrected at the receiving end without retransmission, thus saving round-trip time. If packet loss exhibits time-clustered characteristics, i.e., continuous packet loss within a short period, it is determined to be sudden continuous packet loss. In this case, automatic repeat request is prioritized for data recovery, requesting the sending end to retransmit lost data packets, avoiding excessive forward error correction redundancy and bandwidth waste due to sudden packet loss. Through this collaborative optimization of forward error correction and automatic repeat request, the most suitable error correction method can be dynamically selected according to different channel qualities, maximizing the effective bandwidth utilization of the satellite link while ensuring reliability.

[0082] Preferably, the core control module is also connected to a configuration management and remote maintenance interface unit, such as... Figure 4 As shown, this unit is configured to: provide a local human-machine interface and a remote management channel for visually configuring and updating maritime satellite coverage map data, preset priority policies, availability thresholds for each link, and caching policy parameters; establish a secure connection with the shore-based management platform through currently available active links, and periodically upload the operation status logs of the converged communication gateway, link switching records, and operating parameters of each external communication device; and receive remote commands from the shore-based management platform, including but not limited to: dynamic update packages for maritime satellite coverage map data, diagnostic and reset commands for specific external communication devices, and batch configuration of global policy parameters.

[0083] The workflow of the converged communication gateway to achieve automatic switching of three layers in this invention is as follows: When the gateway is started, step S1 is executed, the core control module is initialized, and the pre-stored maritime satellite coverage map data is loaded.

[0084] Then proceed to step S2, where the location positioning module starts GPS / BeiDou positioning, and the network detection module starts status detection of the 5G communication module, external maritime VSAT equipment, and external Iridium equipment, with a detection frequency of 1 time / second.

[0085] In step S3, the digital twin prediction unit of the core control module constructs a virtual image of the communication link status of the ship's current navigation area based on real-time location information, network status parameters, and pre-stored maritime satellite coverage data. It simulates the link quality evolution trend under different switching paths and generates prediction results including suggestions for switching timing and buffer duration. When the ship's position is detected to be approaching the coverage boundary or spatial anomalies such as auroras are identified, the digital twin prediction unit generates an emergency switching plan and activates the target link in advance.

[0086] Step S4: Based on real-time location information and network status parameters, combined with the prediction results of the digital twin prediction unit, the core control module determines the currently available active links according to a preset priority strategy: It determines whether 5G is available. If 5G is available, the 5G communication module is selected as the active link, and the external maritime VSAT equipment and external Iridium equipment are in standby mode. If 5G is unavailable, it determines whether the ship is within the maritime satellite coverage area: if it is within the coverage area and the external maritime VSAT equipment is available, the external maritime VSAT equipment is selected as the active link; if it is outside the coverage area or the external maritime VSAT equipment is unavailable, it determines whether the external Iridium equipment is available, and if available, the external Iridium equipment is selected as the active link. When multiple optional links exist, the core control module further performs cost-aware link selection, calculates the unit data traffic communication cost of each optional link, and selects the link with the lowest cost as the active link.

[0087] Step S5: If the current active link is different from the link currently in use, a handover operation is performed: The core control module selects the corresponding buffer duration based on the handover type (Type 1 for 5G and satellite, and Type 2 for satellite-to-satellite handover). Type 1 uses 5 seconds, and Type 2 uses 15 seconds. It then sends a buffer instruction containing the selected buffer duration to the data forwarding module, activating the buffer unit to temporarily store data for the specified duration. Simultaneously, it instructs the target communication link to establish a connection. During the buffering process, the buffer unit dynamically allocates buffer resources based on the service type, using a longer buffer duration for service data with high reliability requirements. Once the target link stabilizes, the data forwarding module seamlessly forwards the buffered data through the new link, while the core control module shuts down the original link, putting it into standby mode.

[0088] Step S6: During the voyage, the polar signal enhancement module continuously monitors the ambient temperature: when the temperature is below -20℃, the low-temperature heating unit is activated to heat the three-dimensional Luneburg lens antenna unit; at the same time, the intelligent anti-interference unit analyzes the signal noise characteristics in real time. When ionospheric scintillation interference caused by auroral activity is detected and the packet loss rate exceeds the threshold, the forward error correction coding redundancy is increased from 10% to 30%, and the multi-path data redundancy transmission mechanism is enabled; when signal phase noise caused by geomagnetic disturbance is detected, the adaptive equalizer coefficient is dynamically adjusted to suppress the interference.

[0089] Step S7: Continue executing steps S2 to S6 to achieve dynamic automatic switching of communication links and real-time optimization of signal quality.

[0090] Steps S1 to S7 above describe the optimized workflow of this invention after introducing optimization mechanisms such as digital twin prediction, intelligent anti-interference, and cost awareness. Based on this, the fundamental core function of this invention, namely the logic for automatic three-layer switching based on location information and maritime satellite coverage maps, can be implemented independently. This process corresponds to... Figure 5 The basic decision-making path shown is as follows:

[0091] (1) After the gateway is started, the core control module initializes each module and loads the pre-stored maritime satellite coverage map data; the location positioning module starts GPS / BeiDou positioning, and the network detection module starts the status detection of 5G, external maritime VSAT and external Iridium equipment, with an update frequency of 1 time / second;

[0092] (2) Based on the detection data and location information, the core control module determines the available links according to the priority of "5G priority switching to maritime VSAT coverage area priority switching to Iridium satellite as backup": If 5G meets the availability threshold, 5G is selected as the active link, and the external maritime VSAT and external Iridium satellite equipment are in standby mode; If 5G is unavailable, the core control module determines whether the ship is in the maritime satellite coverage area based on the location data: If it is in the coverage area and the external maritime VSAT equipment meets the availability threshold, the external maritime VSAT is selected as the active link, and the external Iridium satellite equipment is in standby mode; If 5G is unavailable, and the ship leaves the maritime satellite coverage area or the external maritime VSAT equipment is unavailable, if the external Iridium satellite equipment meets the availability threshold, the external Iridium satellite is selected as the active link;

[0093] (3) During navigation, the location module and network detection module continuously monitor: When the ship moves from near shore to mid-to-low latitude ocean (i.e., the maritime VSAT coverage area): the 5G signal weakens to unusable and automatically switches to external maritime VSAT; when the ship moves from mid-to-low latitude ocean (i.e., the maritime VSAT coverage area) to high latitude (i.e., leaving the maritime VSAT coverage area): the location data shows that the ship is outside the maritime satellite coverage area, or the external maritime VSAT signal weakens to unusable and automatically switches to external Iridium; when the ship moves from high latitude to mid-to-low latitude ocean (i.e., re-entering the maritime VSAT coverage area): the location data shows that the ship has returned to the maritime satellite coverage area, and the external maritime VSAT has become available again and automatically switches back to the external maritime VSAT; when the ship moves from ocean to near shore: 5G becomes available again and automatically switches back to 5G.

[0094] (4) During the switch, the core control module sends an instruction to start the connection of the target communication link corresponding to “5G / external maritime VSAT / external Iridium”. The data forwarding module enables the caching mechanism to extend the caching time to 15 seconds when switching between maritime VSAT and Iridium. After the target link is stable, the data is seamlessly forwarded and the original link is closed to switch to standby mode.

[0095] Through the above process, the converged communication gateway of the present invention, suitable for polar navigation, can overcome the challenges of extreme environments such as low temperature and aurora interference during the entire process of ship cross-latitude navigation, especially polar navigation. It can automatically and accurately switch between three communication methods: 5G, external maritime VSAT, and external Iridium satellite. It adopts differentiated caching strategies for different switching types, and combined with cost awareness, service awareness, and transmission protocol optimization mechanisms, it ensures the continuity, economy, reliability, and data integrity of communication.

[0096] Based on the same inventive concept, according to another aspect of the present invention, embodiments of the present invention also provide a computer-readable storage medium storing computer program instructions, which, when executed by a processor, perform the steps of the above-described method for automatic switching of communication links suitable for polar navigation.

[0097] Finally, it should be noted that those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc. The above computer program embodiments can achieve the same or similar effects as any of the corresponding foregoing method embodiments.

[0098] Furthermore, typically, the devices and equipment disclosed in the embodiments of this invention can be various electronic terminal devices, such as mobile phones, personal digital assistants (PDAs), tablet computers (PADs), smart TVs, etc., or they can be large terminal devices, such as servers. Therefore, the scope of protection disclosed in the embodiments of this invention should not be limited to a specific type of device or equipment. The client disclosed in the embodiments of this invention can be applied to any of the above-mentioned electronic terminal devices in the form of electronic hardware, computer software, or a combination of both.

[0099] Furthermore, the method disclosed in the embodiments of the present invention can also be implemented as a computer program executed by a CPU, which may be stored in a computer-readable storage medium. When the computer program is executed by the CPU, it performs the functions defined in the method disclosed in the embodiments of the present invention.

[0100] Furthermore, the above-described method steps and system units can also be implemented using a controller and a computer-readable storage medium for storing a computer program that enables the controller to perform the functions of the above-described steps or units.

[0101] Furthermore, it should be understood that the computer-readable storage medium (e.g., memory) described herein can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. By way of example, and not limitation, non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM), which can act as external cache memory. By way of example, and not limitation, RAM may be available in various forms, such as synchronous RAM (DRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct Rambus RAM (DRRAM). The storage devices disclosed herein are intended to include, but are not limited to, these and other suitable types of memory.

[0102] The above are exemplary embodiments disclosed in this invention. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this invention as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any marked order. Furthermore, although the elements disclosed in the embodiments of this invention may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular.

[0103] In this specification, the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the descriptions of the embodiments described later are relatively simple, and relevant parts can be referred to the descriptions of the foregoing embodiments.

[0104] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A converged communication gateway suitable for polar navigation, characterized in that, include: The core control module, 5G communication module, multi-interface adapter module, network detection module, data forwarding module, location positioning module, polar signal enhancement module, and power supply module are all included. The core control module has pre-stored maritime satellite coverage map data; the data includes at least the coverage latitude range, signal coverage boundary parameters, and a three-layer switching strategy program. The 5G communication module is used to access the near-shore 5G network; The multi-interface adapter module is provided with a first network port and a second network port. The first network port is used to pluggably connect to an external maritime VSAT communication device, and the second network port is used to pluggably connect to an external Iridium communication device. The multi-interface adapter module also includes an interface protocol conversion unit, which is used to convert the private communication protocols of the external maritime VSAT communication device and the external Iridium communication device into a unified internal protocol. The network detection module is used to detect the network status parameters of the communication device in real time; The data forwarding module includes a cache unit, which is connected to the ship's local area network, the 5G communication module, and the multi-interface adapter module, respectively, and is used to forward data between the ship's local area network and external communication links. The location module is used to acquire the ship's location information in real time; The polar signal enhancement module is connected to the multi-interface adapter module and is used to focus and enhance the satellite signals received by the external maritime VSAT communication equipment and the external Iridium communication equipment in the polar environment. The ship's power supply is converted by the power module to supply power to each module; The core control module receives location data from the location positioning module and network status data from the network detection module. Combining this with pre-stored maritime satellite coverage map information, it selects an active link according to a link priority strategy: prioritizing the 5G communication module, then the external maritime VSAT communication device for low-to-mid latitudes, and finally the external Iridium communication device for high-latitudes. The core control module then sends control commands to the multi-interface adaptation module, data forwarding module, and 5G communication module. When switching active links, the core control module also selects a corresponding cache duration from multiple preset cache durations based on the switching type to control the cache unit to temporarily store data. The cache duration is determined based on actual measurements. The switching types include at least a first type (switching between the 5G communication module and any satellite communication device) and a second type (switching between the external maritime VSAT communication device and the external Iridium communication device), with the cache duration for the second type being longer than that for the first type. The cache duration for the first type is 5 seconds, and the cache duration for the second type is 15 seconds. The 5G communication module, external maritime VSAT equipment, and external Iridium satellite equipment transmit external network data to the data forwarding module through corresponding interfaces, while also feeding back their own working status. The core control module also includes a digital twin prediction unit, which is configured to: construct a mirror image of the communication link status of the ship's current navigation area in virtual space based on the real-time location information, the network status parameters, and the pre-stored maritime satellite coverage map data; When the real-time position of the vessel is detected to be close to the coverage boundary defined by the maritime satellite coverage map data, the link quality evolution trend of different switching paths is simulated in the virtual space to generate a prediction result that includes suggestions on switching timing and buffer duration. Based on the prediction results, an activation command is sent to the corresponding target satellite communication equipment in advance, so that the target satellite communication equipment enters the ready state in advance, and the caching strategy of the data forwarding module is adjusted according to the caching duration suggestion in the prediction results; When an anomaly in the polar space environment is detected, the impact of the anomaly on the communication link is simulated in the virtual space, and an emergency switching plan is generated; wherein, the anomaly in the polar space environment includes at least one of aurora activity and geomagnetic disturbance, and the core control module identifies the anomaly based on the signal attenuation characteristics detected by the network detection module.

2. The converged communication gateway suitable for polar navigation according to claim 1, characterized in that, The core control module is configured as follows: Based on the real-time location information obtained by the location positioning module and the pre-stored maritime satellite coverage map data, combined with the network status parameters of each communication link detected by the network detection module, a primary link is selected from the 5G communication module, the external maritime VSAT communication device, and the external Iridium communication device according to a preset priority strategy, and the data forwarding module is controlled to transmit the data of the ship's local area network through the selected primary link. When performing an active link switch, the corresponding cache duration is selected from multiple preset cache durations according to the switch type, and a cache instruction containing the selected cache duration is sent to the data forwarding module. The data forwarding module is controlled to enable the cache unit to temporarily store the data to be forwarded for the specified cache duration. After the target active link establishes a stable connection, the cached data is forwarded through the target active link.

3. A converged communication gateway suitable for polar navigation according to claim 2, characterized in that, The preset priority strategy is as follows: When the 5G communication module is available, the 5G communication module shall be selected as the active link. When the 5G communication module is unavailable and the real-time location information indicates that the ship is within the coverage area defined by the maritime satellite coverage map data, and the external maritime VSAT communication device is available, the external maritime VSAT communication device is selected as the active link; When the 5G communication module is unavailable and the real-time location information indicates that the ship is outside the coverage area defined by the maritime satellite coverage map data, or when the external maritime VSAT communication device is unavailable, if the external Iridium communication device is available, then the external Iridium communication device is selected as the active link.

4. A converged communication gateway suitable for polar navigation according to claim 1, characterized in that, The polar signal enhancement module further includes an intelligent anti-interference unit, which is configured as follows: Receive real-time link quality parameters from the network detection module, the quality parameters including at least bit error rate, signal-to-noise ratio and signal phase noise; Based on the change pattern of the real-time link quality parameters, and combined with the real-time location information provided by the location positioning module, it is identified whether the current communication link is affected by interference caused by the polar space environment, which includes aurora activity or geomagnetic disturbances. When the interference is detected, a dynamic anti-interference command is generated. The command includes: sending it to the data forwarding module to dynamically enhance the forward error correction coding level of the data transmitted by the external maritime VSAT communication device or the external Iridium communication device link; and sending it to the interface protocol conversion unit of the multi-interface adaptation module to dynamically adjust the adaptive equalizer parameters in the signal demodulation process to suppress the signal distortion introduced by the interference. When the identified interference is ionospheric scintillation interference caused by aurora activity and the signal packet loss rate detected by the network detection module exceeds a preset threshold, the dynamic anti-interference instruction further includes: sending it to the data forwarding module to enable a multi-path data redundancy transmission mechanism.

5. A converged communication gateway suitable for polar navigation according to claim 3, characterized in that, The core control module is configured to execute cost-aware link selection constraints: The constraint is based on the preset priority strategy, with the addition of a cost judgment dimension; When there are multiple optional links according to the priority strategy, the core control module accesses the pre-stored or real-time acquired link tariff information, and calculates the unit data traffic communication cost of each optional link in combination with the available bandwidth of each optional link monitored in real time by the network detection module. Select the available link with the lowest communication cost per unit of data traffic as the final active link; The scenario of multiple selectable links includes at least the following: the ship is located within the maritime VSAT coverage area, and multiple external maritime VSAT communication devices from different operators are simultaneously connected and available through the multi-interface adapter module.

6. A converged communication gateway suitable for polar navigation according to claim 3, characterized in that, The caching unit of the data forwarding module is configured to perform a service-aware dynamic caching mechanism: The cache unit can identify the service type of the data flowing through it; When sending a caching instruction, the core control module also dynamically adapts the allocation of caching resources and the specific value of the caching duration according to the main business type of the data to be cached. For business data identified as having high reliability requirements, a protected cache area is allocated and a longer cache duration is adopted to ensure data integrity during link switching.

7. A converged communication gateway suitable for polar navigation according to claim 1, characterized in that, The data forwarding module further includes a transmission protocol optimization unit, which is configured to: When the active link is the external maritime VSAT communication device or the external Iridium communication device, the end-to-end transmission protocol will be switched from TCP to a customized transmission protocol based on UDP. The customized transmission protocol integrates adaptive congestion control and intelligent retransmission mechanisms. The adaptive congestion control mechanism dynamically adjusts the data transmission window based on the link packet loss rate and round-trip delay fed back by the network detection module in real time. The intelligent retransmission mechanism dynamically calculates differentiated retransmission timeout values ​​for different data packets based on the inherent high latency characteristics of satellite links, so as to avoid false retransmissions and decreased link utilization caused by unreasonable fixed timeout settings. The customized transmission protocol also includes a collaborative optimization mechanism for forward error correction and automatic retransmission requests: the network detection module detects the packet loss pattern of the link in real time and statistically analyzes the time interval distribution of packet loss events per unit time; if the packet loss interval follows a Poisson distribution, it is determined to be random sporadic packet loss, and forward error correction coding is given priority for data recovery; if the packet loss exhibits time clustering characteristics, it is determined to be sudden continuous packet loss, and automatic retransmission requests are given priority for data recovery.

8. A converged communication gateway suitable for polar navigation according to claim 1, characterized in that, The core control module is also connected to a configuration management and remote maintenance interface unit; the configuration management and remote maintenance interface unit is configured as follows: It provides a local human-computer interaction interface and a remote management channel for visual configuration and updating of the maritime satellite coverage map data, preset priority strategies, availability thresholds of each link, and caching strategy parameters; Establish a secure connection with the shore-based management platform through the currently available active links, and periodically upload the operation status logs, link switching records, and working parameters of each external communication device of the converged communication gateway; Receive remote commands from the shore-based management platform. These remote commands include, but are not limited to: dynamic update packages for the maritime satellite coverage map data, diagnostic and reset commands for preset external communication devices, and batch configuration of global policy parameters.

9. A method for automatic switching of communication links suitable for polar navigation, applied to the converged communication gateway according to any one of claims 1 to 8, characterized in that, Includes the following steps: Step S1: After the gateway starts, the core control module initializes each module and loads the pre-stored maritime satellite coverage map data. Step S2: The location positioning module starts real-time positioning, and the network detection module starts network status detection of the 5G communication module, the external maritime VSAT communication equipment, and the external Iridium communication equipment. Step S3: The digital twin prediction unit of the core control module constructs a mirror image of the communication link status of the ship's current navigation area in the virtual space based on real-time location information, network status parameters, and pre-stored maritime satellite coverage map data, and generates a prediction result that includes suggestions on switching timing and buffer duration. Step S4: The core control module determines the currently available active links based on real-time location information and network status parameters, combined with the prediction results, according to a preset priority strategy. Step S5: If the current active link is different from the link being used, a switching operation is performed: The core control module selects the corresponding cache duration from a number of preset cache durations according to the switching type, sends a cache instruction containing the selected cache duration to the data forwarding module, enables the caching mechanism to temporarily store data for the cache duration, and simultaneously instructs the target communication link to establish a connection. After the target link stabilizes, the cached data is forwarded through the target link, and the original link is closed. Step S6: During navigation, when the polar signal enhancement module detects that the ambient temperature is lower than a preset threshold, it focuses and enhances the satellite signal. When interference unique to the polar environment is detected, the intelligent anti-interference unit is activated. Based on real-time link quality parameters and location information, the type of interference is identified and dynamic anti-interference instructions are generated. The anti-interference instructions include at least adjusting the forward error correction coding level, adjusting the adaptive equalizer parameters, and enabling multi-path data redundancy transmission under preset conditions. Step S7: Continue executing steps S2 to S6 to achieve dynamic automatic switching of communication links and real-time optimization of signal quality.

Images