Airport wireless access system and method fusing aviation 5G and WiFi

Abstract

The invention relates to the field of wireless communication, and discloses an airport wireless access system and method fusing aviation 5G and WiFi, and the system comprises an aviation 5G communication module, a WiFi access module, a fusion control module, a multi-band antenna module, a network management platform and a security authentication module. According to the invention, dynamic allocation of aviation 5G and WiFi resources is realized through a dynamic spectrum sharing and time slot cooperation technology, and the problems of communication interference and resource competition in an airport high-density scene are solved; meanwhile, the network management platform can calculate the comprehensive load index based on the multi-dimensional data, namely the network state, the user access and the service quality, and finally dynamically adjust the spectrum allocation strategy and the time slot scheduling strategy according to the comparison condition of the comprehensive load index and the preset threshold interval, including light load capacity expansion, overload protection and steady state maintenance. Therefore, the reliability, the resource utilization rate and the user experience of the airport communication system are comprehensively improved.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication, and particularly to a combined aviation 5G and WiFi airport wireless access system and method. Background Art

[0002] With the rapid development of the air transportation industry, modern airports are facing an increasing demand for wireless communication. On the one hand, passengers' demand for high-speed and stable network access has increased sharply, including applications such as real-time flight inquiries and high-definition video transmission. On the other hand, airport operation management has put forward higher requirements for communication systems. Key services such as aircraft guidance and equipment monitoring require high-reliability and low-latency communication guarantees.

[0003] In the prior art, although the aviation 5G technology has advantages such as low latency and high reliability and can meet the requirements of aviation safety communication, it has problems such as limited base station coverage, high construction cost, and serious signal attenuation in complex environments. The traditional WiFi network, although having a lower deployment cost, has defects such as access congestion, cumbersome authentication processes, and serious multi-network interference in high-density user environments, and it is difficult to meet the communication requirements of key services.

[0004] Therefore, there is an urgent need to develop a new type of airport wireless access system that can combine the advantages of aviation 5G and WiFi. Summary of the Invention

[0005] The purpose of the present invention is to provide a combined aviation 5G and WiFi airport wireless access system and method to solve the above technical problems.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A combined aviation 5G and WiFi airport wireless access system, comprising: An aviation 5G communication module for establishing a 5G communication connection with an aircraft; A WiFi access module for providing WiFi network access services for user terminals within the airport area; A fusion control module for dynamically coordinating the resource allocation of the aviation 5G communication module and the WiFi access module; A multi-band antenna module supporting signal transmission and reception in aviation 5G bands and WiFi bands; A network management platform for monitoring the network status, user access situation, and service quality, and adjusting the current spectrum allocation strategy and time slot scheduling strategy according to real-time requirements; A security authentication module for authenticating the identities of users and devices accessing the aviation 5G communication module and the WiFi access module and encrypting data to ensure communication security.

[0007] As a further technical solution, the fusion control module coordinates resource allocation through a dynamic spectrum sharing subunit and a time slot coordination subunit; The dynamic spectrum sharing subunit is used to monitor the load status of the aviation 5G band and the WiFi band in real time, and dynamically allocate idle spectrum resources to communication modules according to requirements; The time slot coordination subunit is used to divide the communication cycle into dedicated time slots for aviation communication, common access time slots for WiFi, and preemption time slots for emergency communication under the time division multiple access framework, and dynamically adjust the time slot ratio according to the flight takeoff and landing density.

[0008] As a further technical solution, the fusion control module executes the following strategies: Service priority scheduling strategy: When the communication requirements of the aircraft exceed the set threshold, the resources of the WiFi access module are reduced to ensure the communication quality of the aviation 5G communication module; Load balancing trigger mechanism: When the user terminal density of the WiFi access module reaches the preset threshold, some terminals are diverted to the ground access channel of the aviation 5G communication module.

[0009] As a further technical solution, the network management platform includes: A multi-dimensional data acquisition module, which is used to obtain in real time: Network status parameters, including channel utilization rate, bit error rate, and signal-to-noise ratio; User access parameters, including the number of concurrent terminals and location distribution density; Service quality parameters, including aviation 5G communication delay and WiFi user throughput; A communication strategy analysis module, which is used to analyze the data collected by the multi-dimensional data acquisition module, and respectively obtain network status indicators, user access indicators, and service quality indicators; after normalization processing, the data is input into a preset communication strategy analysis model, and a comprehensive load index is output; A strategy adjustment module, which selects to maintain or adjust the current spectrum allocation strategy and time slot scheduling strategy according to the comparison between the comprehensive load index and the preset threshold range.

[0010] As a further technical solution, the expression of the communication strategy analysis model is: ; Among them, is the comprehensive load index, is the network status indicator, is the maximum value of the network status, is the user access indicator, is the user access threshold, is the service quality indicator, is the service quality reference value, is the weight coefficient, .

[0011] As a further technical solution, the working process of the policy adjustment module is as follows: When the comprehensive load index < the light load expansion threshold , send a resource expansion instruction to the aviation 5G communication module; When the comprehensive load index > the overload protection threshold , send an access restriction instruction to the security authentication module; When the comprehensive load index is within the preset threshold range , , maintain the current spectrum allocation policy and time slot scheduling policy, and start load trend monitoring.

[0012] As a further technical solution, the calculation methods of the network status index, user access index, and service quality index are as follows: ; is the channel utilization rate, is the maximum channel utilization rate, is the bit error rate, is the signal-to-noise ratio; ; is the current moment, is the historical peak traffic moment, is the th number of concurrent terminals in the area, is the th area area, is the th area weight factor; ; is the aviation 5G communication delay, is the theoretical minimum delay, is the WiFi user throughput, is the WiFi theoretical maximum throughput.

[0013] A method for fusing aviation 5G and WiFi airport wireless access includes the following steps: S1: Synchronously receive communication signals in the aviation 5G band and the WiFi band through the multi-band antenna module; S2: The security authentication module authenticates the identities of the accessing users and devices and encrypts the data; S3: The fusion control module monitors the load status of the aviation 5G band and the WiFi band in real time through the dynamic spectrum sharing subunit, and dynamically allocates the idle spectrum resources to the aviation 5G communication module or the WiFi access module according to the demand; S4: The fusion control module performs time division multiple access scheduling through the time slot coordination subunit, divides the communication cycle into dedicated time slots for aviation communication, public access time slots for WiFi, and preemption time slots for emergency communication, and dynamically adjusts the time slot ratio according to the flight takeoff and landing density; S5: The network management platform collects network status parameters, user access parameters, and service quality parameters in real time, and calculates the comprehensive load index Q through the communication policy analysis module; S6: The policy adjustment module performs operations according to the comprehensive load index Q: When < Send a resource expansion instruction to the aviation 5G communication module; When > Send an access restriction instruction to the security authentication module; When ∈ , , maintain the current policy and start load trend monitoring; S7: Based on the service priority scheduling strategy, when the communication demand of the aircraft exceeds the set threshold, reduce the resources of the WiFi access module to ensure the communication quality of aviation 5G; S8: Based on the load balancing trigger mechanism, when the user terminal density of the WiFi access module reaches the preset threshold, divert some terminals to the ground access channel of the aviation 5G communication module.

[0014] Advantages of the present invention: (1) The present invention monitors the load status of the aviation 5G and WiFi bands in real time through the dynamic spectrum sharing subunit, allocates the idle spectrum resources to the communication module as needed, and uses the time slot coordination subunit to divide the dedicated time slots for aviation communication, public access time slots for WiFi, and preemption time slots for emergency communication, and dynamically adjusts the time slot ratio according to the flight takeoff and landing density, realizing the dynamic reuse of spectrum and time slot resources, avoiding resource waste caused by fixed allocation, and improving the overall resource utilization rate and communication efficiency of the airport communication system; (2) In the present invention, the network management platform collects multi-dimensional data on network status, user access, and service quality, calculates the comprehensive load index, and dynamically adjusts the strategy: when the load is light, resources are expanded to the aviation 5G module to extend coverage; when overloaded, WiFi access is restricted through the security authentication module to protect core communication; when in a steady state, the strategy is maintained and trends are monitored. At the same time, the fusion control module executes the priority scheduling strategy, reduces WiFi resources when the communication demand of the aircraft surges, ensures low-latency and high-reliability communication of aviation 5G, and ensures that critical services are not interfered with. (3) The load balancing trigger mechanism in the present invention can divert some terminals to the aviation 5G ground access channel when the density of WiFi access terminals is too high, avoiding a decrease in throughput caused by single-point congestion of WiFi. The security authentication module authenticates the identity of users and devices and encrypts data to ensure communication security. Through the above mechanisms, it can not only meet the high-speed and stable demand for high-density Internet access of passengers, but also improve the reliability of aviation communication, achieving a comprehensive improvement in user experience and system stability. Brief Description of the Drawings

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is the system structure block diagram of the present invention; Figure 2 It is the method flow chart of the present invention. Specific Embodiments

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figure 1 - Figure 2 As shown, the present invention is a wireless access system for airports that integrates aviation 5G and WiFi, including: An aviation 5G communication module for establishing a 5G communication connection with the aircraft; a 5G baseband processing unit that supports the aviation dedicated frequency band, integrates the beamforming algorithm, and establishes a directional communication link with the aircraft through a phased array antenna, and can transmit key data for flight guidance and real-time monitoring, meeting the signal coverage requirements in the complex airport environment. A WiFi access module for providing WiFi network access services for user terminals within the airport; deploying access points that meet the high-speed wireless communication standard, supporting dual-band signal transmission, covering the terminal building and parking lot areas, providing high-density network access services for user terminals, and optimizing the Internet access experience of passengers. The fusion control module is used to dynamically coordinate the resource allocation of the aviation 5G communication module and the WiFi access module. It is built based on a high-performance processor and includes a dynamic spectrum sharing subunit and a time slot coordination subunit. Among them, the dynamic spectrum sharing subunit monitors the frequency band load status in real time and allocates idle spectrum resources to the aviation 5G or WiFi module as needed, avoiding resource idleness caused by fixed allocation. The time slot coordination subunit divides the communication cycle into aviation dedicated time slots, WiFi public time slots, and emergency preemptive time slots under the time division multiple access framework, and dynamically adjusts the proportion of various time slots according to flight density to achieve time-division multiplexing of services. The multi-band antenna module supports signal transceiver of aviation 5G bands and WiFi bands. It can be a common aperture antenna array, supporting signal combining and splitting of aviation 5G and WiFi bands, reducing interference between frequency bands through electromagnetic compatibility design, and ensuring the stability of signal transceiver. The network management platform is used to monitor the network status, user access situation, and service quality, and adjust the current spectrum allocation strategy and time slot scheduling strategy according to real-time requirements. The security authentication module authenticates the identities of users and devices accessing the aviation 5G communication module and the WiFi access module and encrypts data to ensure communication security.

[0019] For example, when flights take off and land; Signal reception and authentication: The multi-band antenna module synchronously receives 5G signals sent by the aircraft, such as position coordinates and speed data during the landing phase, and WiFi connection requests from passenger terminals. The security authentication module verifies the certificate of the aircraft and authenticates the user terminal by binding the MAC address or SMS verification code.

[0020] Dynamic resource allocation: Spectrum sharing: When the communication demand of aircraft surges during the morning and evening rush hours, the dynamic spectrum sharing subunit temporarily allocates 10MHz of spectrum in the WiFi band to the 5G module to ensure the aviation communication bandwidth. During the off-peak period, if the idle rate of the 5G band is > 20%, part of the spectrum is allocated back to the WiFi module to improve the user's Internet access speed.

[0021] Time slot scheduling: During the peak flight takeoff and landing period from 7:00 to 9:00, the time slot coordination subunit adjusts the proportion of aviation dedicated time slots to 60% to ensure that the transmission delay of flight instructions ≤ 8ms. During the low-peak period, the proportion of WiFi public time slots is increased to 50% to support the transmission of high-definition video streams for passengers.

[0022] Load monitoring and policy execution: The network management platform calculates the comprehensive load index in real time , if is less than the light load expansion threshold , , send a resource expansion instruction to the 5G module to extend the coverage area to the roads around the airport; if > overload protection threshold , , such as during holidays at the terminal building, the security authentication module restricts new WiFi user access and guides 20% of the terminals to switch to the 5G network through the BSSTransition mechanism.

[0023] In this embodiment, through the dynamic spectrum sharing and time slot coordination mechanism, the dynamic reuse of aviation 5G and WiFi resources is realized, avoiding the spectrum idle problem under the traditional fixed allocation mode, and improving the overall resource utilization efficiency of the airport communication system; at the same time, through the aviation dedicated time slot and priority scheduling strategy, the low latency and high reliability of communication in core scenarios such as aircraft takeoff and landing are ensured, effectively guaranteeing the data transmission quality of aviation safety services and meeting the stringent requirements of airport operations for critical communication; also, through the load balancing mechanism and intelligent policy adjustment, it dynamically responds to the high-density user access scenario at the airport, avoids single-point congestion of the WiFi network, and at the same time ensures communication security through security authentication technology, achieving a double improvement in the passenger Internet experience and system operation stability; finally, the network management platform is based on the real-time analysis and policy adjustment of multi-dimensional data, so as to be able to quickly respond to the dynamic changes of airport communication needs, such as flight traffic fluctuations and passenger flow aggregation, enhancing the environmental adaptability of the present invention.

[0024] The fusion control module coordinates resource allocation through the dynamic spectrum sharing subunit and the time slot coordination subunit; The dynamic spectrum sharing subunit is used to monitor the load status of the aviation 5G band and the WiFi band in real time, and dynamically allocate idle spectrum resources to communication modules according to requirements; As one of the embodiments, the spectrum allocation algorithm: the channel occupancy rate η = , when η < 30% in the aviation 5G band and η > 70% in the WiFi band, trigger the spectrum sharing process; The time slot coordination subunit is used to divide the communication cycle into aviation communication dedicated time slots, WiFi public access time slots and emergency communication preemption time slots in the time division multiple access framework, and dynamically adjust the time slot ratio according to the flight takeoff and landing density.

[0025] Time division multiple access framework: Communication cycle: It can be defined that 10 ms is a complete cycle, divided into 10 1-ms time slots, and each time slot can be configured as aviation dedicated, WiFi public or emergency preemption type.

[0026] Time slot allocation strategy: Aviation dedicated time slot: occupies 4 time slots (40%) by default, uses a fixed allocation method, and is used to transmit real-time data such as aircraft take-off and landing instructions. It supports dynamic frame structure, such as the uplink and downlink ratio can be adjusted to 3:1.

[0027] WiFi public time slot: occupies 5 time slots (50%) by default, adopts dynamic TDMA / CSMA hybrid mechanism, and a single time slot supports time-sharing access by 16 WiFi terminals.

[0028] Emergency time slot preemption: One time slot (10%) is reserved to support interrupt-based fast access, with a higher priority than other services. For example, a fire alarm signal can preempt a time slot within 200 μs.

[0029] Dynamic adjustment logic: The fusion control module adjusts the time slot ratio according to the flight take-off and landing density, where the flight take-off and landing density is reported in real time by the airport radar system. For example, when more than five flights are detected taking off and landing within 30 minutes, the aviation dedicated time slot ratio is increased to 60%, and the WiFi public time slot ratio is compressed to 30%.

[0030] In this embodiment, through dynamic spectrum sharing, the idle resource reuse capability of aviation 5G and WiFi frequency bands is enhanced, avoiding the problem of idle resources in the traditional fixed allocation mode, especially during off-peak flight hours, WiFi can use 5G idle spectrum to increase bandwidth; the fixed allocation and dynamic expansion and contraction mechanism of aviation dedicated time slots to ensure the stability of critical business delays improves the stability of communication delays during aircraft take-off and landing, meeting the stringent real-time requirements of civil aviation communications; the joint scheduling of spectrum and time slots enhanced by dynamic response capabilities can quickly respond to sudden changes in flight traffic, ensure that critical businesses are not impacted by sudden traffic bursts, and improve the overall robustness of the airport communication system.

[0031] The fusion control module implements the following strategies: Service priority scheduling strategy: when the aircraft communication demand exceeds the set threshold, the WiFi access module resources are reduced to ensure the communication quality of the aviation 5G communication module; among them, aircraft communication is a high-priority service, and user terminal WiFi access is a low-priority service; The signaling interaction of the aviation 5G communication module monitors the aircraft communication needs in real time, and triggers priority scheduling when the following situations are detected: When the aircraft is in the take-off and landing phase, the flight status is obtained through ADS-B signals; The bit error rate or latency of the aviation 5G channel exceeds the standard, indicating that the link quality has deteriorated; The fusion control module sends a bandwidth limit instruction to the WiFi access module, reducing its available spectrum from 20 MHz to 10 MHz, and at the same time increasing the proportion of dedicated aviation time slots of the time slot coordination subunit from 40% to 60%; the quality of service marking technology is adopted to allocate the highest priority queue to aviation 5G data packets to ensure their priority scheduling during transmission.

[0032] Load balancing trigger mechanism, when the user terminal density of the WiFi access module reaches the preset threshold, some terminals are shunted to the ground access channel of the aviation 5G communication module.

[0033] In this embodiment, the time delay stability and low bit error rate of aircraft communication in high-load scenarios are ensured through the service priority scheduling strategy, effectively avoiding the risk of critical service interruption caused by the sudden increase in passenger Internet traffic and meeting the civil aviation safety communication requirements; at the same time, the load balancing trigger mechanism can dynamically shunt the overloaded WiFi traffic to the aviation 5G network, avoiding single network congestion, improving the average throughput and connection stability of user terminals, especially in crowded areas such as airport terminals; finally, through the dual mechanisms of priority and load balancing, while ensuring aviation safety services, resources are reasonably allocated to civilian Internet access needs, avoiding one-size-fits-all resource restrictions, and achieving a balance between critical services and public services. The network management platform includes: Multidimensional data acquisition module, used to obtain in real time: Network status parameters, including channel utilization rate, bit error rate and signal-to-noise ratio; User access parameters, including the number of concurrent terminals and location distribution density; Quality of service parameters, including aviation 5G communication delay and WiFi user throughput; Communication strategy analysis module, used to analyze the data collected by the multidimensional data acquisition module, and obtain network status indicators, user access indicators and quality of service indicators respectively; after normalization processing, input them into a preset communication strategy analysis model, and output a comprehensive load index. Policy adjustment module, according to the comparison between the comprehensive load index and the preset threshold interval, selects to maintain or adjust the current spectrum allocation strategy and time slot scheduling strategy.

[0034] In this embodiment, the multi-dimensional data acquisition module realizes the real-time monitoring of the full-dimensional state of the airport communication system. The communication strategy analysis module converts heterogeneous data into a quantifiable load index through the communication strategy analysis model, improving the management accuracy. At the same time, the strategy adjustment module switches the scheduling strategy in real time based on the comprehensive load index, actively expands the 5G coverage range during light load, and intervenes in traffic diversion in advance before overload to avoid the sharp drop in service quality caused by the traditional passive response mode. The load trend monitoring function in the steady-state scenario can identify potential congestion risks in advance, so as to resolve them in advance through the pre-diversion mechanism, reducing the failure rate.

[0035] The expression of the communication strategy analysis model is: ; where is the comprehensive load index, is the network status index, is the maximum value of the network status, is the user access index, is the user access threshold, is the service quality index, is the service quality reference value, is the weight coefficient, , which is used to adjust the importance of each dimension index in the comprehensive load assessment, meeting the differentiated requirements of different scenarios. For example, during the peak period at the airport, user access is emphasized, and during the off-peak period, network status is emphasized.

[0036] In this embodiment, the comprehensive load index as a quantitative index of the system load state, reflects the overall pressure level of the integrated network of aviation 5G and WiFi, and is used to trigger spectrum allocation and time slot scheduling strategy adjustment; The higher the value, the heavier the network load, and the overload protection or load balancing mechanism needs to be started; on the contrary, resource expansion can be carried out. The network status index is used to characterize the physical layer transmission quality of the current network, covering core parameters such as channel utilization rate, bit error rate, and signal-to-noise ratio; The higher it is, the more fully the channel resources are occupied or the greater the transmission error, which may lead to a decrease in communication reliability and needs to be improved through spectrum optimization or error correction mechanisms. is used to quantify the access density and distribution characteristics of user terminals, including the number of concurrent terminals, regional location weights, and time factors, The higher it is, the denser the terminals per unit area, which may cause congestion in WiFi access or interference with 5G ground terminals, and needs to be alleviated through load balancing and traffic diversion. The service quality index is used to evaluate the comprehensive performance of aviation 5G communication delay and WiFi user throughput, reflecting the quality balance between key services and public services; The higher it is, the longer the time delay or the lower the WiFi throughput. It is necessary to prioritize ensuring aviation communication or adjusting spectrum allocation to improve WiFi performance.

[0037] Through the above technical solutions, to integrate three core indicators of network status, user access, and quality of service, realizing a comprehensive quantification of the complex load of the airport communication system and avoiding evaluation biases caused by a single indicator. For example, even if the network status is good, if the user access density is extremely high, the load balancing mechanism will still be triggered to ensure that the evaluation results fit the actual operating pressure; through the logarithmic function part , it is sensitive to low-load states to ensure the timeliness of resource expansion during light loads; through the exponential function part it is sensitive to high-load states to ensure that the protection mechanism is quickly triggered during overload to avoid system crashes.

[0038] The working process of the policy adjustment module is as follows: When the comprehensive load index < light load expansion threshold , send a resource expansion instruction to the aviation 5G communication module; When the comprehensive load index > overload protection threshold , send an access restriction instruction to the security authentication module; When the comprehensive load index is within the preset threshold range , , maintain the current spectrum allocation policy and time slot scheduling policy, and start monitoring the load trend. The policies maintained under steady state include: spectrum allocation policy, the proportion of the aviation 5G frequency band ≥ 50%; time slot scheduling policy, the proportion of aviation communication time slots ≥ 40%.

[0039] The calculation methods of the network status index, user access index, and quality of service index are as follows: ; is the channel utilization rate, is the maximum channel utilization rate, is the bit error rate, is the signal-to-noise ratio; directly linearly superimpose the utilization rate, bit error rate (positive), and the reciprocal of the signal-to-noise ratio to reflect the degree of network congestion, bit errors, and interference.

[0040] ; is the current moment, is the moment of historical peak traffic, is the th number of concurrent terminals in the area, is the th area area, is the weight factor for the th area; The absolute value term in reflects the degree of deviation between the current time and the peak period. The greater the deviation, the smaller the impact of traffic fluctuations. Dynamically adjust the density weight in combination with the time dimension, amplify the access pressure during the peak period, and reduce the weight during the off-peak period; Then consider the importance differences of different areas. For example, the waiting hall is more prone to congestion than the parking lot. Calculate the comprehensive density through weighted calculation. After comprehensive calculation, a more accurate user access index can be obtained.

[0041] ; is the communication delay of aviation 5G, is the theoretical minimum delay, is the throughput of WiFi users, is the theoretical maximum throughput of WiFi. Through the cross-impact modeling of delay and throughput, simulate the actual user experience. For example, when high delay is accompanied by low throughput, the experience index deteriorates significantly.

[0042] A method for fusing aviation 5G and WiFi airport wireless access includes the following steps: S1: Synchronously receive communication signals in the aviation 5G band and the WiFi band through a multi-band antenna module; S2: The security authentication module authenticates the identity of the accessing users and devices and encrypts the data; S3: The fusion control module monitors the load status of the aviation 5G band and the WiFi band in real time through the dynamic spectrum sharing subunit, and dynamically allocates the idle spectrum resources to the aviation 5G communication module or the WiFi access module according to the demand; S4: The fusion control module executes time division multiple access scheduling through the time slot coordination subunit, divides the communication cycle into dedicated time slots for aviation communication, public access time slots for WiFi, and emergency communication preemption time slots, and dynamically adjusts the time slot ratio according to the flight takeoff and landing density; S5: The network management platform collects network status parameters, user access parameters, and service quality parameters in real time, and calculates the comprehensive load index Q through the communication strategy analysis module; S6: The policy adjustment module performs operations according to the comprehensive load index Q: When < Send a resource expansion instruction to the aviation 5G communication module; When > Send an access restriction instruction to the security authentication module; When ∈ , When [condition], maintain the current strategy and start load trend monitoring; S7: Based on the service priority scheduling strategy, when the aircraft communication demand exceeds the set threshold, reduce the resources of the WiFi access module to ensure the quality of aviation 5G communication; S8: Based on the load balancing trigger mechanism, when the user terminal density of the WiFi access module reaches the preset threshold, divert some terminals to the ground access channel of the aviation 5G communication module.

[0043] It should be noted that: The calculation formulas and each parameter participating in the operation in the present invention are all pre-dimensionless processed, and the process of dimensionless processing is well-known in the industry and will not be described here.

[0044] The above has described a detailed description of an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as defining the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the scope covered by the patent of the present invention.

Claims

1. An airport wireless access system integrating aviation 5G and WiFi, characterized in that, Including: An aviation 5G communication module for establishing a 5G communication connection with an aircraft; A WiFi access module for providing WiFi network access services to user terminals within the airport area; A fusion control module for dynamically coordinating the resource allocation of the aviation 5G communication module and the WiFi access module; A multi-band antenna module supporting signal transmission and reception in the aviation 5G band and the WiFi band; A network management platform for monitoring network status, user access conditions, and service quality, and adjusting the current spectrum allocation strategy and time slot scheduling strategy according to real-time requirements; A security authentication module for authenticating the identities of users and devices accessing the aviation 5G communication module and the WiFi access module and encrypting data to ensure communication security.

2. The integrated aviation 5G and WiFi airport wireless access system according to claim 1, wherein The fusion control module coordinates resource allocation through a dynamic spectrum sharing subunit and a time slot coordination subunit; The dynamic spectrum sharing subunit is used to real-time monitor the load status of the aviation 5G band and the WiFi band, and dynamically allocate idle spectrum resources to communication modules according to requirements; The time slot coordination subunit is used to divide the communication cycle into dedicated time slots for aviation communication, public access time slots for WiFi, and emergency communication preemption time slots under the time division multiple access framework, and dynamically adjust the time slot ratio according to the flight takeoff and landing density.

3. The integrated aviation 5G and WiFi airport wireless access system according to claim 2, characterized in that, The fusion control module executes the following strategies: A service priority scheduling strategy. When the communication requirements of the aircraft exceed the set threshold, reduce the resources of the WiFi access module to ensure the communication quality of the aviation 5G communication module; A load balancing trigger mechanism. When the density of user terminals of the WiFi access module reaches the preset threshold, divert some terminals to the ground access channel of the aviation 5G communication module.

4. The integrated aviation 5G and WiFi airport wireless access system according to claim 3, wherein The network management platform includes: A multi-dimensional data acquisition module for real-time obtaining: Network status parameters, including channel utilization rate, bit error rate, and signal-to-noise ratio; User access parameters, including the number of concurrent terminals and location distribution density; Service quality parameters, including aviation 5G communication delay and WiFi user throughput; A communication strategy analysis module for analyzing the data collected by the multi-dimensional data acquisition module to obtain network status indicators, user access indicators, and service quality indicators respectively; after performing normalization processing, input them into a preset communication strategy analysis model and output a comprehensive load index; A strategy adjustment module for selecting to maintain or adjust the current spectrum allocation strategy and time slot scheduling strategy according to the comparison between the comprehensive load index and the preset threshold range.

5. The integrated 5G and WiFi airport wireless access system according to claim 4, characterized in that, The expression of the communication strategy analysis model is: ； Among them, is the comprehensive load index, is the network status indicator, is the maximum network status, is the user access indicator, is the user access threshold, is the quality of service indicator, is the quality of service reference value, , , are the weight coefficients, .

6. The integrated aviation 5G and WiFi airport wireless access system according to claim 5, characterized in that The working process of the strategy adjustment module is: When the comprehensive load index <is less than the light load expansion threshold a resource expansion instruction is sent to the aviation 5G communication module; When the comprehensive load index > the overload protection threshold send an access restriction instruction to the security authentication module; When the comprehensive load index is within the preset threshold range , , maintain the current spectrum allocation strategy and time slot scheduling strategy, and start load trend monitoring.

7. The integrated aviation 5G and WiFi airport wireless access system according to claim 5, characterized in that, The calculation methods of the network status indicators, user access indicators, and service quality indicators are: ; is the channel utilization rate, is the maximum channel utilization rate, is the bit error rate, is the signal-to-noise ratio; ; is the current moment, is the moment of historical peak traffic, is the number of concurrent terminals in the th area, is the area of the th area, is the weight factor of the th area; ; is the latency of 5G communication for aviation, is the theoretical minimum latency, is the throughput of WiFi users, is the theoretical maximum throughput of WiFi.

8. A method for integrating aviation 5G and WiFi airport wireless access, characterized in that, This method is implemented based on the integrated aviation 5G and WiFi airport wireless access system described in claim 6, and includes the following steps: S1: Synchronously receive communication signals in the aviation 5G band and the WiFi band through the multi-band antenna module; S2: The security authentication module authenticates the identities of accessing users and devices and encrypts data; S3: The fusion control module monitors the load status of the aviation 5G band and the WiFi band in real time through the dynamic spectrum sharing subunit, and dynamically allocates the idle spectrum resources to the aviation 5G communication module or the WiFi access module according to the demand; S4: The fusion control module executes time division multiple access scheduling through the time slot coordination subunit, divides the communication cycle into dedicated time slots for aviation communication, public access time slots for WiFi, and preemption time slots for emergency communication, and dynamically adjusts the time slot ratio according to the flight takeoff and landing density; S5: The network management platform collects network status parameters, user access parameters, and service quality parameters in real time, and calculates the comprehensive load index Q through the communication policy analysis module; S6: The policy adjustment module performs operations according to the comprehensive load index Q: When < send a resource expansion instruction to the aviation 5G communication module; When > is true, send an access restriction instruction to the security authentication module; When ∈ , , maintain the current policy and start load trend monitoring; S7: Based on the service priority scheduling policy, when the communication demand of the aircraft exceeds the set threshold, the resources of the WiFi access module are reduced to ensure the communication quality of aviation 5G; S8: Based on the load balancing trigger mechanism, when the user terminal density of the WiFi access module reaches the preset threshold, some terminals are diverted to the ground access channel of the aviation 5G communication module.

Images