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WO2025001448A1 - Procédé et appareil de communication air-sol, dispositif électronique et support de stockage - Google Patents

Procédé et appareil de communication air-sol, dispositif électronique et support de stockage Download PDF

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Publication number
WO2025001448A1
WO2025001448A1 PCT/CN2024/088581 CN2024088581W WO2025001448A1 WO 2025001448 A1 WO2025001448 A1 WO 2025001448A1 CN 2024088581 W CN2024088581 W CN 2024088581W WO 2025001448 A1 WO2025001448 A1 WO 2025001448A1
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WO
WIPO (PCT)
Prior art keywords
base station
atg
flight
atg base
turning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/088581
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English (en)
Chinese (zh)
Inventor
赵勇
谢伟良
王庆扬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Telecom Corp Ltd
Original Assignee
China Telecom Corp Ltd
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Filing date
Publication date
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Publication of WO2025001448A1 publication Critical patent/WO2025001448A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18502—Airborne stations
    • H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to an air-to-ground communication method, device, electronic device and storage medium.
  • the ATG (Air To Ground) network system can utilize mature land mobile communication technology, deploy ATG base stations along flight routes to transmit radio signals to the air, and use ground-to-air communication links to provide high-bandwidth communication services to aircraft in the air.
  • ATG base stations deploy antennas to provide air coverage, and ATG airborne terminals can be installed on flight equipment (such as aircraft and drones).
  • the ATG airborne terminals can communicate with the ATG base stations to receive radio signals transmitted by the ATG base stations, and then convert the received signals into WiFi signal coverage in the flight equipment, thereby effectively realizing ground-to-air high-speed data transmission.
  • ATG has the advantages of high data bandwidth, low latency, low cost, and high reliability that is not affected by weather.
  • ATG networks are gradually developing to meet the aviation industry's demand for high-speed and reliable wireless communication services.
  • IMT International Mobile Telecommunications
  • public network communications has made spectrum resources increasingly tight.
  • deploying ATG networks and IMT networks on the same frequency is a solution to the tight spectrum resources.
  • ATG airborne terminals will cause uplink interference to a large range of cells on the ground co-frequency IMT network, thereby affecting the use of the public network.
  • the purpose of the present disclosure is to provide an air-to-ground communication method, device, electronic device and storage medium.
  • an air-to-ground communication method which is applied to an air-to-ground broadband communication ATG airborne terminal, including: determining the flight status of a flight device where the ATG airborne terminal is located; when the flight status is a turning flight status, searching for an outer ATG base station outside the turning route of the flight device; and determining to communicate with the outer ATG base station when the signal quality of the outer ATG base station meets the conditions.
  • determining the flight status of the flight equipment where the ATG airborne terminal is located includes: acquiring flight route data of the flight equipment; determining whether the flight equipment is in a turning area based on the flight route data; if the flight equipment is in the turning area, determining that the flight equipment is in a turning flight state.
  • the signal quality of the outer ATG base station meets the condition, it is determined to communicate with the outer ATG base station, including: when there are multiple outer ATG base stations whose signal quality meets the condition, determining a target outer ATG base station from the multiple outer ATG base stations according to the signal quality of each outer ATG base station; and determining to communicate with the target outer ATG base station.
  • the air-to-ground communication method provided by the present disclosure also includes: when the communication time between the ATG airborne terminal and the target outer ATG base station exceeds a time threshold, re-searching for the outer ATG base station outside the turning route of the flight equipment.
  • the air-to-ground communication method provided by the present disclosure also includes: when the flight state is a turning flight state, if the outer ATG base station is not searched and obtained, then the inner ATG base station is searched and obtained on the inner side of the turning route of the flight equipment; when the signal quality of the inner ATG base station meets the conditions, it is determined to communicate with the inner ATG base station.
  • the air-to-ground communication method provided by the present disclosure also includes: when the flight state is a straight flight state, when the communication time between the ATG airborne terminal and the currently connected ATG base station exceeds a time threshold, determining a target ATG base station whose signal quality meets the conditions, and communicating with the target ATG base station.
  • the signal quality includes: base station signal strength or a signal-to-noise ratio of the base station signal.
  • an air-to-ground communication device comprising a state determination module, a base station search module and a communication module.
  • the state determination module is configured to determine the flight state of the flight equipment where the ATG airborne terminal is located;
  • the base station search module is configured to search for an outer ATG base station outside the turning route of the flight equipment when the flight state is a turning flight state;
  • the communication module is configured to determine to communicate with the outer ATG base station when the signal quality of the outer ATG base station meets the conditions.
  • a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned air-to-ground communication method is implemented.
  • an electronic device comprising: a processor; and a memory configured to store executable instructions of the processor; wherein the processor is configured to execute the above-mentioned air-to-ground communication method by executing the executable instructions.
  • FIG1 shows a schematic diagram of a network architecture of an air-to-ground communication method to which an embodiment of the present disclosure can be applied.
  • FIG2 shows a schematic diagram of a network architecture of another air-to-ground communication method to which an embodiment of the present disclosure can be applied.
  • FIG3 shows a flow chart of an air-to-ground communication method in an embodiment of the present disclosure.
  • FIG4 is a schematic diagram showing a turning flight state of a flying device in an air-to-ground communication method according to an embodiment of the present disclosure.
  • FIG. 5 shows the effect of interference on the IMT base station when the ATG base station on the inner side of the turning route is preferentially selected for communication.
  • FIG6 shows a diagram showing the effect of interference on an IMT base station when an ATG base station outside a turning route is preferentially selected for communication in an air-to-ground communication method in an embodiment of the present disclosure.
  • FIG. 7 shows a block diagram of an air-to-ground communication device according to an embodiment of the present disclosure.
  • FIG8 shows a structural block diagram of an air-to-ground communication computer device in an embodiment of the present disclosure.
  • first and second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.
  • a feature defined as “first” or “second” may explicitly or implicitly include one or more of the features.
  • the meaning of “plurality” is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
  • FIG1 shows a schematic diagram of a network architecture of an air-to-ground communication method to which an embodiment of the present disclosure can be applied.
  • the system architecture may include a flight device 101 (such as a manned aircraft, a drone, etc.), an ATG (Air To Ground) airborne terminal 102, an ATG base station 103, an IMT (International Mobile Telecommunications) base station 104, and a terminal device 105.
  • the ATG airborne terminal 102 is arranged on the flight device 101, the ATG base station 103 and the IMT base station 104 are deployed on the ground, and the terminal device 105 is located in the flight device 101.
  • the ATG airborne terminal 102 may communicate with the ATG base station 103 to receive the radio signal transmitted by the ATG base station 103 and then convert it into a WiFi (Wireless Fidelity) signal in the flight device 101, which is then used by the terminal device 105 in the flight device 101.
  • WiFi Wireless Fidelity
  • the ATG airborne terminal 102 and the ATG base station 103 and the IMT base station 104 and the terminal device 105 are connected via a network.
  • the wireless network or wired network uses standard communication technology and/or protocol.
  • the network is usually the Internet, and can also be any network, including but not limited to any combination of a local area network (LAN), a metropolitan area network (MAN), a wide area network (WAN), a mobile, wired or wireless network, a private network or a virtual private network.
  • the data exchanged through the network can be represented by technologies and/or formats including Hyper Text Mark-up Language (HTML), Extensible Markup Language (XML), etc.
  • HTML Hyper Text Mark-up Language
  • XML Extensible Markup Language
  • conventional encryption technologies such as Secure Socket Layer (SSL), Transport Layer Security (TLS), Virtual Private Network (VPN), Internet Protocol Security (IPsec), etc. can also be used to encrypt all or some links.
  • customized and/or dedicated data communication technologies may be used to replace or supplement the above-mentioned data communication technologies.
  • the terminal device 105 may be various electronic devices, including but not limited to a smart phone, a tablet computer, a laptop computer, a desktop computer, a wearable device, an augmented reality device, a virtual reality device, etc.
  • the client of the application installed in different terminal devices 105 is the same, or is the client of the same type of application based on different operating systems; based on different terminal platforms, the specific form of the client of the application may also be different, for example, the application client may be a mobile client, a PC client, etc.
  • interference is generated to the IMT base station 104 .
  • FIG2 shows a schematic diagram of the network architecture of another air-to-ground communication method to which the embodiment of the present disclosure can be applied. As shown in FIG2 , it includes a flight device 101, an ATG airborne terminal 102, an ATG base station 103, an IMT base station 104, and a terminal device 105.
  • the flight device 101 When the flight device 101 is located within a certain range above the cell where the IMT base station 104 is located, since there is a certain degree of consistency between the incident angle of the uplink signal of the ATG airborne terminal 102 and the pointing direction of the first upper side lobe of the antenna of the ground co-frequency IMT base station 104, the ATG airborne terminal 102 will generate co-frequency interference to the uplink of the IMT base station 104; wherein, the higher the degree of consistency and the closer the distance between the ATG airborne terminal 102 and the IMT base station 104, the stronger the co-frequency interference generated.
  • the present disclosure provides an air-to-ground communication method, which can be applied to the ATG airborne terminal 102.
  • the process of the ATG airborne terminal 102 for implementing the air-to-ground communication method may be: the ATG airborne terminal 102 determines the flight status of the flight equipment where the ATG airborne terminal is located; when the flight status is a turning flight status, the ATG airborne terminal 102 searches for an outer ATG base station outside the turning route of the flight equipment; when the signal quality of the outer ATG base station meets the conditions, the ATG airborne terminal 102 determines to communicate with the outer ATG base station.
  • FIG. 1 and FIG. 2 are only an application environment of the air-to-ground communication method provided by the present disclosure.
  • the number of flight equipment 101, ATG airborne terminal 102, ATG base station 103, IMT base station 104 and terminal device 105 in FIG. 1 and FIG. 2 is only for illustration, and any number of flight equipment 101, ATG airborne terminal 102, ATG base station 103, IMT base station 104 and terminal device 105 may be provided according to actual needs.
  • the embodiments of the present disclosure are not limited to this.
  • FIG3 shows a flow chart of an air-to-ground communication method in an embodiment of the present disclosure.
  • the method can be applied to an air-to-ground broadband communication ATG airborne terminal, and can be executed by any electronic device with computing and processing capabilities, such as the ATG airborne terminal 102, ATG base station 103 or IMT base station 104 shown in FIG1 or FIG2, but the present disclosure is not limited thereto.
  • the air-to-ground communication method provided by the embodiment of the present disclosure may include the following steps.
  • Step S301 determining the flight status of the flight equipment where the ATG airborne terminal is located.
  • flight equipment refers to mechanical devices or tools used for air transportation or flight activities in the atmosphere, such as civil aircraft, tankers, surveillance aircraft, drones, helicopters and other flight equipment.
  • the ATG airborne terminal After communicating with the ATG base station on the ground, the ATG airborne terminal can receive the radio signal of the ATG base station, and then provide WiFi signals in the flight equipment for use by electronic equipment on the flight equipment (such as mobile terminals).
  • the flying device is an airplane.
  • the flight state may include a turning flight state, a straight flight state, etc.
  • the trajectory of the aircraft in the turning flight state may be projected on the ground as an arc curve, and the curvature of the arc curve is less than or equal to a preset curvature threshold.
  • the trajectory of the aircraft in the straight flight state may be projected on the ground as a straight line or an arc curve that is approximately a straight line, and the curvature of the arc curve that is approximately a straight line is greater than a preset curvature threshold.
  • the current flight state of the aircraft may be obtained by acquiring a signal carrying flight state information sent by other systems, or the flight route data of the aircraft may be first acquired, and then the current flight state of the aircraft may be determined based on the flight route data.
  • step S301 may further include: acquiring flight route data of the flying device; determining whether the flying device is in a turning area according to the flight route data; and if the flying device is in the turning area, determining that the flying device is in a turning flight state.
  • the flight route data may include, for example, the longitude and latitude of the aircraft at different times, and the flight trajectory of the aircraft may be determined based on the longitude and latitude, and the flight trajectory may be used to calculate whether the current position is in a turning area.
  • the arc curve segment where the aircraft is currently located may be determined based on the flight trajectory, and the curvature data (such as the average curvature) of the arc curve segment may be calculated. If the curvature data is less than or equal to a preset curvature threshold, it is determined that the aircraft is in a turning area, and the aircraft is determined to be in a turning area. In addition, if the curvature data is greater than a preset curvature threshold, the current flight state of the aircraft can be determined as a straight flight state.
  • Step S303 when the flight state is a turning flight state, searching for an outer ATG base station outside the turning route of the flight device.
  • the turning route can be understood as the arc curve segment where the current position of the aircraft is located in the aircraft trajectory, and the outer side of the turning route can be understood as the outer side of the arc curve segment. All the ATG base stations that can be searched can be first searched, and then the geographical location of the searched ATG base stations is compared with the arc curve segment, and the searched ATG base stations located outside the arc curve segment are determined as the outer ATG base stations.
  • Other systems with the function of searching for ATG base stations may first perform a search to determine the outer ATG base station, and then the system may send a signal carrying the outer ATG base station to the ATG airborne terminal.
  • the ATG airborne terminal may directly initiate a search function to determine the outer ATG base station. This disclosure does not limit this.
  • a search may also be performed on the inner side of the turning route of the flight equipment to obtain the inner ATG base station, so as to fully understand the layout of the ATG base stations near the route, which serves as the data basis for subsequent processing.
  • FIG4 shows a schematic diagram of a flight state of a flight device in an air-to-ground communication method in an embodiment of the present disclosure, in which the flight state of the flight device is a turning flight state.
  • the flight state of the flight device is a turning flight state.
  • it includes an aircraft 400, an ATG airborne terminal 401 arranged on the aircraft 400, a turning route 402 of the aircraft 400, an IMT base station 403, an ATG base station 404, an ATG base station 405, and an ATG base station 406.
  • the IMT base station 403 and the ATG base station 404 are located on the inner side of the turning route 402
  • the ATG base station 405 and the ATG base station 406 are located on the outer side of the turning route 402.
  • FIG4 also includes the waypoints of the aircraft 400 on the turning route 402 at each time from T0 to T6.
  • the aircraft 400 when the aircraft 400 flies to the T2 time point on the turning route 402 , it can be determined that the flight state of the aircraft 400 is a turning flight state, and the ATG base station 405 and the ATG base station 406 located outside the turning route 402 can be searched and obtained.
  • Step S305 When the signal quality of the outer ATG base station meets the conditions, determine to communicate with the outer ATG base station.
  • the signal quality may be measured by an ATG airborne terminal with a signal measurement function, or may be measured by other devices and sent to the ATG airborne terminal.
  • the signal quality may include: base station signal strength or a signal-to-noise ratio of a base station signal.
  • the above condition may be that the base station signal strength exceeds a strength threshold, or the signal-to-noise ratio of the base station signal exceeds a signal-to-noise ratio threshold.
  • the strength threshold and the signal-to-noise ratio threshold may be regarded as the minimum requirements for meeting the communication needs between the ATG airborne terminal and the ATG base station.
  • the communication requirement is to enable most users on the airplane to browse the web or watch videos smoothly when using the network at the same time; in the scenario where users on the airplane can use the network to send simple messages (such as plain text messages), the communication requirement is that users on the airplane can send simple messages.
  • the strength threshold or signal-to-noise ratio threshold in the above conditions can be pre-configured or determined based on the signal strength of all searched ATG base stations.
  • the average value of the base station signal strength of all searched inner ATG base stations and outer ATG base stations can be used as the strength threshold, or the average value of the signal-to-noise ratio can be used as the signal-to-noise ratio threshold.
  • ATG base stations above the average level can be screened out for consideration, thereby reducing the amount of data processing and improving the efficiency of the communication connection.
  • the ATG airborne terminal can be controlled to communicate with the outer ATG base station.
  • the aircraft Since the aircraft is in a turning flight state at this time, if the ATG airborne terminal communicates with the ATG base station on the inner side of the turning route, then during the entire turning process, the incident angle of the uplink signal emitted by the ATG airborne terminal will continue to point to the inner side of the turning route, and the distance between the ATG airborne terminal and the IMT base station on the inner side of the turning route is always close. As mentioned above, this will cause continuous and strong uplink interference to the IMT base stations located in the large range inside the turning route, thereby continuously and strongly affecting the normal operation of the IMT base stations in the range inside the turning route.
  • choosing to communicate with an outer ATG base station that meets the signal quality requirements can avoid continuous and strong interference to IMT base stations in a fixed range, thereby reducing the co-frequency interference of the ATG network on the uplink of the terrestrial IMT network.
  • FIG5 shows the effect of interference to the IMT base station when the ATG base station on the inner side of the turning route is preferentially selected for communication.
  • FIG5 shows the interference degree of the IMT base station 403 at each time T0 to T6 if the ATG airborne terminal 401 communicates with the ATG base station 404 located on the inner side of the turning route 402 at times T0 to T6.
  • the IMT base station 403 will be subject to continuous and strong interference at times T2 to T4.
  • FIG6 shows an effect diagram of the interference to the IMT base station when the ATG base station outside the turning route is preferentially selected for communication in an air-to-ground communication method in an embodiment of the present disclosure.
  • FIG6 shows that the ATG airborne terminal 401 communicates with the ATG base station 404 located inside the turning route 402 at T0, T1, T3, T5 and T6, communicates with the ATG base station 405 at T2, and communicates with the ATG base station 406 at T4.
  • the IMT base station 403 is not subjected to continuous and strong interference, and is only subjected to strong interference at T3.
  • the flight status of the aircraft can also be obtained from the pre-configured route planning data.
  • the route planning data includes the aircraft's planned flight route, planned take-off time, and planned landing time, as well as the approach times corresponding to multiple waypoints in the planned flight route.
  • each turning route can be determined based on the planned flight route, and nearby ATG base stations can be searched in advance based on the planned flight route.
  • ATG base stations located outside each turning route can be selected from the nearby ATG base stations as candidate base stations. It can be seen that this method can reduce the amount of data processing and improve the efficiency of communication connections.
  • the signal strength of candidate base stations detected in historical flight data can be obtained, and then candidate base stations with signal strengths that meet the conditions can be pre-selected as ATG base stations corresponding to the flight to each passing point. This method can further improve the efficiency of communication connections.
  • the flight status of the flight equipment where the ATG airborne terminal is located can be determined first.
  • the flight status is determined to be a turning flight status
  • the outer ATG base station is searched outside the turning route of the flight equipment, and then it is determined whether the signal quality of the outer ATG base station can meet the conditions.
  • the ATG airborne terminal is controlled to communicate with the outer ATG base station. It can be seen that, on the one hand, choosing to communicate with the outer ATG base station can avoid continuous and strong interference to the IMT base stations in a fixed range.
  • the service quality of the ATG network can be guaranteed to meet the aviation industry's demand for high-speed and reliable wireless communication services (such as people using mobile broadband services in airplanes).
  • step S303 may further include: when there are multiple outer ATG base stations whose signal qualities meet the conditions, determining the target outer ATG base station from the multiple outer ATG base stations according to the signal qualities of each outer ATG base station; and determining to communicate with the target outer ATG base station.
  • the outer ATG base station with the best signal quality can be selected as the target outer ATG base station.
  • the outer ATG base station with the largest base station signal strength or the highest base station signal-to-noise ratio can be selected as the target outer ATG base station for communication.
  • the ATG base station 405 can be selected to establish a communication connection with the ATG airborne terminal 401.
  • the air-to-ground communication method provided by the present disclosure also includes: when the communication duration between the ATG airborne terminal and the target outer ATG base station exceeds a duration threshold, re-searching for the outer ATG base station outside the turning route of the flight equipment.
  • the duration threshold can be pre-set, for example, it can be set to 10 minutes or 15 minutes, etc.; the duration threshold can also be obtained based on big data statistics, for example, the duration threshold can be determined based on the losses caused by the affected IMT base station.
  • the signal quality of the outer ATG base stations obtained through the re-search may be detected. If there is an outer ATG base station whose signal quality meets the requirements, it is determined to communicate with it.
  • the signal quality of the outer ATG base stations obtained by the re-search does not meet the conditions, you can consider searching for the inner ATG base station inside the turning route of the flight equipment, and then determine to communicate with the inner ATG base station if the signal quality of the inner ATG base station meets the conditions.
  • the aircraft can be switched to other outer ATG base stations that meet the signal quality conditions and can be searched through the duration threshold, thereby avoiding the generation of an IMT base station near the target outer ATG base station. Continuous interference, thereby reducing the co-frequency interference of the ATG network on the uplink of the terrestrial IMT network.
  • the air-to-ground communication method provided by the present disclosure may further include: when it is detected that the signal quality of the target outer ATG base station does not meet the condition, re-searching for an outer ATG base station outside the turning route of the flight device. Similarly, the signal quality of the outer ATG base stations obtained by the re-search may be tested, and if there is an outer ATG base station whose signal quality meets the condition, it is determined to communicate with it.
  • the alternating frequency can be set based on actual scenario requirements, such as changing an outer ATG base station whose signal quality meets the condition for communication every 5 minutes or every 10 minutes.
  • the air-to-ground communication method provided by the present disclosure also includes: when the flight state is a turning flight state, if the outer ATG base station is not searched and obtained, then the inner ATG base station is searched and obtained on the inner side of the turning route of the flight equipment; when the signal quality of the inner ATG base station meets the conditions, it is determined to communicate with the inner ATG base station.
  • the air-to-ground communication method provided by the present disclosure also includes: when the flight state is a straight flight state, when the communication time between the ATG airborne terminal and the currently connected ATG base station exceeds a time threshold, determining a target ATG base station whose signal quality meets the conditions, and communicating with the target ATG base station.
  • the aircraft When the aircraft is flying in a straight line and the communication time with the currently connected ATG base station has reached the time threshold, it can first search for optional ATG base stations within the search range, and then select the ATG base station with satisfactory signal quality from the optional ATG base stations as the target ATG base station. If the target ATG base station is still the previously connected ATG base station, since there is only one, in order to ensure communication, it can still be selected to communicate with it; if the target ATG base station is different from the previously connected ATG base station, and there is only one, it is determined to communicate with it; if the target ATG base station is different from the previously connected ATG base station, and there are multiple ATG base stations, the one with the best signal quality can be selected for communication.
  • the aircraft When the aircraft is flying in a straight line, since the aircraft is constantly moving, it will not cause continuous and strong interference to the IMT base stations in fixed cells. However, if it is always communicating with the same ATG base station, it will cause continuous interference to the IMT base stations near the ATG base station that maintains communication. To avoid this situation, the aircraft can be controlled through a duration threshold to switch connections between ATG base stations that meet the signal quality conditions and can be searched, thereby reducing the co-frequency interference of the ATG network on the uplink of the ground IMT network.
  • the air-to-ground communication method provided by the embodiments of the present disclosure may include the following process.
  • the flight route turning area is determined based on the flight route data of the aircraft (such as flight longitude and latitude information).
  • the position characteristics of the ATG base stations in the flight route turning area are identified.
  • the ATG base stations on the inner side of the route turning can be identified as the inner side ATG base stations (such as ATG base station 404 in Figure 4)
  • the ATG base stations on the outer side of the route turning can be identified as the outer side ATG base stations (such as ATG base stations 405 and ATG base stations 406 in Figure 4)
  • the base stations not at the route turning can be identified as ATG ordinary base stations.
  • the signal quality of the ATG base station inside and outside the route can be compared;
  • the base station signal quality can be the base station signal strength or the signal-to-noise ratio of the base station signal.
  • the ATG airborne terminal can give priority to the ATG base station outside the route to maintain data transmission.
  • the ATG base station outside the route can also be given priority to maintain data transmission.
  • the selection and connection can be performed alternately among the multiple outer base stations.
  • Figure 7 shows a block diagram of an air-to-ground communication device 700 according to an embodiment of the present disclosure; as shown in Figure 7, it includes: a state determination module 701, configured to determine the flight state of the flight equipment where the ATG airborne terminal is located; a base station search module 702, configured to search for an outer ATG base station outside the turning route of the flight equipment when the flight state is a turning flight state; and a communication module 703, configured to determine to communicate with the outer ATG base station when the signal quality of the outer ATG base station meets the conditions.
  • a state determination module 701 configured to determine the flight state of the flight equipment where the ATG airborne terminal is located
  • a base station search module 702 configured to search for an outer ATG base station outside the turning route of the flight equipment when the flight state is a turning flight state
  • a communication module 703, configured to determine to communicate with the outer ATG base station when the signal quality of the outer ATG base station meets the conditions.
  • the flight status of the flight equipment where the ATG airborne terminal is located can be determined first.
  • the flight status is determined to be a turning flight status
  • the outer ATG base station is searched outside the turning route of the flight equipment, and then it is determined whether the signal quality of the outer ATG base station can meet the conditions.
  • the ATG airborne terminal is controlled to communicate with the outer ATG base station. It can be seen that, on the one hand, choosing to communicate with the outer ATG base station can avoid continuous and strong interference to the IMT base stations in a fixed range.
  • the service quality of the ATG network can be guaranteed to meet the aviation industry's demand for high-speed and reliable wireless communication services (such as people using mobile broadband services in airplanes).
  • the status determination module 701 determines the flight status of the flight equipment where the ATG airborne terminal is located, including: obtaining the flight route data of the flight equipment; determining whether the flight equipment is in a turning area based on the flight route data; if the flight equipment is in the turning area, determining that the flight equipment is in a turning flight state.
  • the communication module 703 Determining to communicate with an outer ATG base station includes: when there are multiple outer ATG base stations whose signal qualities meet conditions, determining a target outer ATG base station from multiple outer ATG base stations according to the signal qualities of each outer ATG base station; and determining to communicate with the target outer ATG base station.
  • the base station search module 702 is further configured to: when the communication duration between the ATG airborne terminal and the target outer ATG base station exceeds a duration threshold, re-search for an outer ATG base station outside the turning route of the flight equipment.
  • the base station search module 702 is further configured to: when the flight state is a turning flight state, if the outer ATG base station is not searched and obtained, then search for the inner ATG base station inside the turning route of the flight equipment; when the signal quality of the inner ATG base station meets the conditions, determine to communicate with the inner ATG base station.
  • the base station search module 702 is also configured to determine a target ATG base station whose signal quality meets the conditions, and the communication module 703 is also configured to communicate with the target ATG base station.
  • the signal quality includes: base station signal strength or a signal-to-noise ratio of a base station signal.
  • Fig. 8 shows a block diagram of an air-to-ground communication computer device in an embodiment of the present disclosure. It should be noted that the electronic device shown in the figure is only an example and should not bring any limitation to the functions and scope of use of the embodiment of the present invention.
  • the electronic device 800 according to this embodiment of the present invention is described below with reference to Fig. 8.
  • the electronic device 800 shown in Fig. 8 is only an example and should not bring any limitation to the functions and application scope of the embodiment of the present invention.
  • the electronic device 800 is in the form of a general computing device.
  • the components of the electronic device 800 may include but are not limited to: at least one processing unit 810, at least one storage unit 820, and a bus 830 connecting different system components (including the storage unit 820 and the processing unit 810).
  • the storage unit stores program codes, which can be executed by the processing unit 810, so that the processing unit 810 performs the steps according to various exemplary embodiments of the present invention described in the above “Exemplary Method” section of this specification.
  • the processing unit 810 can perform the method shown in FIG. 2.
  • the storage unit 820 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 8201 and/or a cache memory unit 8202 , and may further include a read-only memory unit (ROM) 8203 .
  • RAM random access memory
  • ROM read-only memory
  • the storage unit 820 may also include a program/utility 8204 having a set (at least one) of program modules 8205, such program modules 8205 including but not limited to: an operating system, one or more application programs, other Program modules and program data, each or some combination of these examples may include an implementation of a network environment.
  • program modules 8205 including but not limited to: an operating system, one or more application programs, other Program modules and program data, each or some combination of these examples may include an implementation of a network environment.
  • Bus 830 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
  • the electronic device 800 may also communicate with one or more external devices 900 (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 800, and/or communicate with any device that enables the electronic device 800 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input/output (I/O) interface 850.
  • the electronic device 800 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and/or public networks, such as the Internet) via a network adapter 860.
  • networks e.g., local area networks (LANs), wide area networks (WANs), and/or public networks, such as the Internet
  • the network adapter 860 communicates with other modules of the electronic device 800 via a bus 830.
  • other hardware and/or software modules may be used in conjunction with the electronic device 800, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.
  • a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present specification is stored.
  • various aspects of the present invention can also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps according to various exemplary embodiments of the present invention described in the above "Exemplary Method" section of the present specification.
  • the program product for implementing the above method according to the embodiment of the present invention may adopt a portable compact disk read-only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer.
  • a readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, apparatus, or device.
  • the program product may use any combination of one or more readable media.
  • the readable medium may be a readable signal medium or a readable storage medium.
  • the readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.
  • Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.
  • the program code contained in the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, Fiber optic, RF, etc., or any suitable combination of the above.
  • Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages such as Java, C++, etc., and conventional procedural programming languages such as "C" or similar programming languages.
  • the program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.
  • the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., through the Internet using an Internet service provider).
  • LAN local area network
  • WAN wide area network
  • Internet service provider e.g., AT&T, MCI, Sprint, EarthLink, etc.
  • the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the implementation of the present disclosure.
  • a non-volatile storage medium which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.
  • a computing device which can be a personal computer, a server, a mobile terminal, or a network device, etc.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Sont divulgués un procédé et un appareil de communication air-sol, ainsi qu'un dispositif électronique et un support de stockage, qui se rapportent au domaine technique des communications. Le procédé peut être appliqué à un terminal aéroporté ATG de communication à large bande air-sol, et consiste à : déterminer l'état de vol d'un dispositif de vol où se trouve un terminal aéroporté ATG ; lorsque l'état de vol est un état de vol tournant, rechercher le côté externe d'un itinéraire de virage du dispositif de vol pour une station de base ATG externe ; et, lorsque la qualité de signal de la station de base ATG externe satisfait une condition, déterminer de communiquer avec la station de base ATG externe.
PCT/CN2024/088581 2023-06-27 2024-04-18 Procédé et appareil de communication air-sol, dispositif électronique et support de stockage Pending WO2025001448A1 (fr)

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