Communication system in emergency rescue and disaster relief environment and implementation method

Abstract

The present application relates to the technical field of communications, and provides a communication system in an emergency rescue and disaster relief environment and an implementation method. The system comprises: a first-level communication circle, comprising a plurality of unmanned aerial vehicle main communication nodes, the main communication nodes being connected to a core network by means of a satellite link; a second-level communication circle, comprising a plurality of mobile communication nodes, the mobile communication nodes carrying base stations, and the base stations being connected to the unmanned aerial vehicle main communication nodes by means of air interfaces; and a three-level communication circle, comprising radio frequency amplification nodes connected to the mobile communication nodes. By means of the deployed network architecture of the first-level communication circle, the second-level communication circle and the third-level communication circle, the communication coverage range of an emergency area is extended step by step, thus expanding the communication coverage range, improving a deep coverage capability, and meeting emergency communication requirements in large-area emergency rescue and disaster relief environments.

Description

Communication system and implementation method in emergency rescue scenarios

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on and claims the priority of Chinese patent application with application number 202410114907.4 and application date January 26, 2024. The entire content of the Chinese patent application is hereby incorporated into this disclosure by reference. Technical Field

[0003] The present disclosure relates to the field of communication technology, and in particular to a communication system and implementation method for emergency rescue and disaster relief scenarios. Background Art

[0004] In the public safety sector, natural disasters present significant challenges to disaster relief efforts due to their random and uncertain nature. Emergency communications support in these scenarios is crucial for these efforts. Drones equipped with 5G base stations offer long-range and wide-area coverage, making them widely used in emergency communications. Currently, existing emergency communications solutions often utilize the flight altitude, payload capacity, and flight characteristics (such as the ability to hover) of different drone types. For different emergency scenarios, a single drone is deployed at high, medium, and low altitudes to provide 5G coverage over a specific area on the ground, ensuring ground communications capabilities.

[0005] However, existing mainstream technical solutions often rely on single drones for ground coverage. Limited by their payload capacity, drones cannot carry high-power base stations, resulting in limited coverage range and insufficient deep coverage. For example, large fixed-wing drones operating at high altitudes have an emergency communication coverage radius of only 4.4 km, while medium-sized and tethered drones flying at medium and low altitudes have a coverage radius of only 2-3 km. Emergency scenarios often feature complex terrain, such as obstructed vegetation in forests, and crisscrossing streets and alleys in urban areas, with tall, dense, and sturdy buildings and complex underground engineering facilities. These factors directly affect communication signal penetration, leading to insufficient deep coverage. Summary of the Invention

[0006] The disclosed embodiments provide a communication system and implementation method for emergency rescue and disaster relief scenarios, which are used to solve the technical problems of limited coverage and insufficient deep coverage capability in existing emergency communication solutions with single drone coverage in emergency rescue and disaster relief scenarios.

[0007] In a first aspect, an embodiment of the present disclosure provides a communication system for emergency rescue scenarios, including:

[0008] The first-level communication circle includes multiple UAV main communication nodes; the main communication nodes are connected to the core network via satellite links;

[0009] The secondary communication circle includes multiple mobile communication nodes, each of which is equipped with a base station, and the base station is connected to the main communication node of the UAV through an air interface;

[0010] The third-level communication circle includes a radio frequency amplification node connected to the mobile communication node.

[0011] In some embodiments, the drone main communication node is equipped with a dual-band base station, and the dual-band base station is configured to form a multi-cell network in the emergency area;

[0012] The communication system also includes a ground mooring box for supplying power to the main communication node of the UAV.

[0013] In some embodiments, the number of the drone's main communication nodes is determined according to the size of the emergency area;

[0014] The size of the emergency area is variable, and the number of the main communication nodes of the UAV corresponding to the emergency area is adjustable.

[0015] In some embodiments, the mobile communication node includes at least one of a mobile communication vehicle, a mobile unmanned vehicle, and a combination of a mobile communication vehicle and an unmanned aerial vehicle.

[0016] In some embodiments, when the mobile communication node includes a combination of a mobile communication vehicle and a drone, the drone serves as a backup for the communication link of the mobile communication vehicle, and the backup method includes the drone flying above the mobile communication vehicle in an accompanying manner.

[0017] In some embodiments, the radio frequency amplification node is powered by wind energy and / or solar energy.

[0018] In some embodiments, the coverage areas of the primary communication circle, the secondary communication circle, and the tertiary communication circle include each other.

[0019] In some embodiments, the link between the UAV in the mobile communication node and the mobile communication vehicle and the UAV main communication node in the mobile communication node adopts a heterogeneous frequency networking structure.

[0020] In a second aspect, an embodiment of the present disclosure provides a method for implementing a communication system in a disaster rescue scenario, for implementing and deploying the communication system in the disaster rescue scenario as described in the first aspect above, the implementation method comprising:

[0021] According to the size of the emergency area, a corresponding number of UAV main communication nodes are deployed in the emergency area to form a primary communication circle;

[0022] Deploy mobile communication nodes in the emergency area to form a secondary communication circle; the mobile communication nodes are equipped with base stations, and the base stations are connected to the main communication nodes of the UAVs through air interfaces;

[0023] Radio frequency amplification nodes are deployed in the emergency area to form a three-level communication circle.

[0024] In some embodiments, when the primary communication circle expands along with the emergency area, additional drone main communication nodes are deployed to expand the coverage of the primary communication circle.

[0025] In some embodiments, the implementation method further includes:

[0026] A ground mooring box is deployed in the emergency area to supply power to the main communication node of the UAV.

[0027] In some embodiments, the mobile communication node utilizes low-frequency access to the main communication node of the drone in the primary communication circle as a relay to implement business services of the communication terminal.

[0028] In some embodiments, the base station carried by the mobile communication node is connected to the main communication node of the drone via 600MHz.

[0029] In a third aspect, an embodiment of the present disclosure provides a communication method for emergency rescue and disaster relief scenarios, which is applied to the communication system for emergency rescue and disaster relief scenarios as described in the first aspect above, including:

[0030] When the mobile communication node includes a combination of a mobile communication vehicle and a drone, the drone flies above the mobile communication vehicle in an accompanying manner to serve as a backup for the communication link of the mobile communication vehicle.

[0031] In some embodiments, the communication method further comprises:

[0032] When a target drone that meets the relay conditions exists in the mobile communication node composed of the mobile communication vehicle and the drone, an idle drone is selected as the relay drone of the target drone to relay the target drone;

[0033] When the base station transmission power of the target UAV is less than a preset threshold value, the ground communication terminal connected to the target UAV automatically starts the switching process and switches to the relay UAV. The relay UAV relays the target UAV to provide business services to the communication terminal.

[0034] In some embodiments, the relay condition includes that the available power of the drone is insufficient, or the flight time of the drone reaches a preset time.

[0035] In some embodiments, the accompanying flying drone is a multi-rotor drone, which is different from the main communication node of the drone.

[0036] The communication system and implementation method for emergency rescue scenarios provided by the embodiments of the present disclosure gradually advance the communication coverage of emergency areas through the deployment of a networking architecture of a primary communication circle, a secondary communication circle, and a tertiary communication circle. This can expand the communication coverage, improve the depth of coverage capability, and meet the emergency communication needs in large-scale emergency rescue scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the present disclosure or related technologies, a brief introduction will be given below to the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0038] FIG1 is a schematic diagram of the structure of a communication system for emergency rescue scenarios provided by some embodiments of the present disclosure;

[0039] FIG2 is a schematic diagram of the structure of a communication system in a disaster relief scenario provided by the prior art;

[0040] FIG3 is a schematic diagram of a networking architecture of a mobile communication node composed of a mobile communication vehicle and a drone, provided by some embodiments of the present disclosure;

[0041] FIG4 is a schematic diagram of a drone relay handover process in a mobile communication node composed of a mobile communication vehicle and a drone, provided by some embodiments of the present disclosure;

[0042] FIG5 is a flowchart of one of the methods for implementing a communication system in a disaster relief scenario provided by some embodiments of the present disclosure;

[0043] FIG6 is a second flowchart of a method for implementing a communication system in an emergency and disaster relief scenario provided by some embodiments of the present disclosure. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of the present disclosure more clear, the technical solutions of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0045] It should be noted that, in the description of this disclosure, the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element. Terms such as "upper" and "lower" indicate positions or location relationships based on those shown in the accompanying drawings and are intended solely for ease of description and simplification of the disclosure. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation, and are therefore not to be construed as limiting the disclosure. Unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be broadly construed, for example, to mean a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or internal communication between two elements. For those skilled in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0046] The terms "first," "second," and the like in this disclosure are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present disclosure can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of a class, and do not limit the number of objects; for example, the first object can be one or more. In addition, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0047] FIG1 is a schematic diagram of the structure of a communication system for emergency rescue and disaster relief provided by an embodiment of the present disclosure. Referring to FIG1 , the communication system for emergency rescue and disaster relief provided by an embodiment of the present disclosure may include:

[0048] The first-level communication circle includes multiple UAV main communication nodes; the main communication nodes are connected to the core network via satellite links;

[0049] The secondary communication circle includes multiple mobile communication nodes, each of which is equipped with a base station, and the base station is connected to the main communication node of the UAV through an air interface;

[0050] The third-level communication circle includes a radio frequency amplification node connected to the mobile communication node.

[0051] The communication system for emergency rescue scenarios provided by the embodiments of the present disclosure (hereinafter referred to as the system) is a 5G communication system, which is composed of a three-level communication circle consisting of drone main communication nodes, mobile communication nodes, and radio frequency amplification nodes, forming a 5G air-ground integrated mobile communication guarantee solution.

[0052] Specifically, the system includes a primary communication circle, which includes multiple drone main communication nodes, which are connected to the core network via satellite links. The connected core network nodes can be remote core network nodes. Furthermore, the system also includes a secondary communication circle formed within the primary communication circle, which includes multiple mobile communication nodes, each equipped with a base station, which is connected to the drone main communication node via a 5G air interface. Furthermore, the system also includes a tertiary communication circle formed within the secondary communication circle, which includes a radio frequency amplification node connected to the mobile communication node. The radio frequency amplification node can be a portable radio frequency amplification node.

[0053] Optionally, as shown in Figure 1, a primary communication circle includes one or more secondary communication circles, and any secondary communication circle includes one or more tertiary communication circles. It is understood that the coverage of primary and secondary communication circles, as well as the coverage of secondary and tertiary communication circles, partially overlap or connect, and can include each other, thereby achieving a step-by-step improvement in coverage.

[0054] Referring to the existing emergency communication solution shown in Figure 2, based on the characteristics of different drones, such as large fixed-wing drones, medium-sized vertical fixed-wing drones, large and medium-sized unmanned helicopters, large vertical fixed-wing drones, and tethered drones, each is directly connected to a communication satellite via a satellite link, and the communication satellite is connected to the ground core network, providing coverage of the emergency area at high, medium, and low altitudes. The communication system for emergency rescue scenarios provided by the disclosed embodiments, based on the characteristics of different drones, establishes communication circles layer by layer. Under the same conditions of drone equipment, it increases the coverage range of the emergency area and improves the depth of coverage of the emergency area.

[0055] In some embodiments, taking a 15km×10km area as an emergency area for disaster relief as an example, within the emergency area for disaster relief, the first-level communication circle is composed of the main communication nodes of drones. There are often dangerous situations or dangerous objects in the emergency scenes. In order to achieve the safety and concealment of communication support facilities, the tethered drones as the main communication nodes fly in real time at an altitude of 200 to 300 meters 1km away from the emergency area, and are connected to the core network through satellite links.

[0056] The secondary communication circle is composed of mobile communication nodes. Generally, emergency relief efforts are constantly evolving, and drone-based primary communication nodes alone cannot meet the communication coverage needs within the emergency area. Therefore, a secondary communication circle is formed within the primary communication circle using mobile communication nodes. These nodes are mobile communication vehicles equipped with high-gain 5G base stations, such as 2×40W 700MHz, or mobile drones equipped with integrated 5G base stations, such as 2×10W 700MHz. Alternatively, a combination of these mobile communication vehicles and drones can further expand the communication coverage of the drone-based primary communication nodes, further extending the coverage of the primary communication circle. Alternatively, to address the issue of connecting mobile communication vehicles / drones to base station equipment, the conventional approach is to equip them with satellite communication modules and rely on satellite links for uplink. However, mobile communication vehicles or drones have limited payloads, and the carrying equipment needs to be lightweight. Therefore, 5G air interfaces are introduced to replace existing wired / satellite links as base station backhaul links. Alternatively, a mobile communication node, such as a mobile communication vehicle or drone, can use low-frequency access to the primary drone communication node in the primary communication circle, which acts as a relay to provide communication terminal services. Alternatively, to avoid interference, a base station on the mobile communication vehicle or drone can connect to the primary drone communication node using 5G air interface technologies such as 600MHz.

[0057] Furthermore, the third-level communication circle is composed of RF amplification nodes. Due to the complex and diverse topography of the emergency area, to fully ensure comprehensive coverage within the first and second-level communication circles, a portable RF amplification unit is introduced. This unit can be attached to any location, such as the exterior walls of laneways and the exterior of indoor windows, further extending the coverage of the second-level communication circle of the mobile communication nodes. The portable RF amplification unit is small, low-power, does not include 5G baseband processing functions, and is low-cost. It can be carried by emergency rescue personnel and can be attached and deployed anywhere. In addition, the portable RF amplification unit is powered by clean energy such as wind and / or solar energy, which does not affect the complexity of the network architecture and reduces the damage caused by damage.

[0058] It should be noted that within the emergency area, the drone's main communication nodes, mobile communication nodes and RF amplification nodes can all independently provide communication services for ground communication terminals.

[0059] Optionally, in the first-level communication circle, each main communication node of each drone, consisting of multiple tethered drones, is equipped with a 5G integrated dual-frequency base station (BBU+RRU) such as 2×10W 600MHz and 700MHz, and is configured to form a multi-cell network, thereby forming directional coverage of the emergency area and providing communication services for communication terminals located on the ground within a radius of 2 to 3km. A tethered box paired with it is provided on the ground to provide power supply services to the main communication nodes of the drone.

[0060] Optionally, the number of primary drone communication nodes is determined based on the size of the emergency area. The size of the emergency area is variable, so the number of primary drone communication nodes corresponding to the emergency area is adjustable. Generally, as emergency rescue and relief efforts continue to expand, the emergency area will continue to expand. Additional primary drone communication nodes can be flexibly added between the primary and secondary communication circles, thereby expanding the coverage of the primary communication circle. This creates an overall networking architecture in which the primary communication circle is responsible for fixed communication support, while the secondary and tertiary communication circles are responsible for mobile emergency rescue and relief communication support, ultimately covering the entire emergency rescue and relief area.

[0061] Optionally, the mobile communication node includes at least one of a mobile communication vehicle, a mobile unmanned vehicle, and a combination of a mobile communication vehicle and an unmanned aerial vehicle. That is, the mobile communication node in the secondary communication circle can be a mobile communication vehicle, a mobile unmanned vehicle, or a combination of a mobile communication vehicle and an unmanned aerial vehicle.

[0062] Furthermore, when the mobile communication node comprises a combination of a mobile communication vehicle and a drone, the drone flies above the mobile communication vehicle as a backup for the vehicle's communication link. Referring to the networking architecture of the mobile communication vehicle and drone combination in the secondary communication circle shown in Figure 3, due to height restrictions such as bridges, trees, and power lines, the antenna height of a moving mobile communication vehicle is limited, generally not exceeding 3 meters from the ground. This results in poor coverage link stability. Therefore, drones carrying equipment such as base stations are introduced simultaneously, flying above the mobile communication vehicle as a backup and supplement to the ground communication link. In Figure 3, the drone's primary communication node is connected to the core network via a satellite link. Connections between the drone and the mobile communication vehicle in the mobile communication node, between the mobile communication vehicle and the drone's primary communication node, between the communication terminal and the mobile communication vehicle, and between the communication terminal and the drone in the mobile communication node are all made via 5G air interfaces.

[0063] As shown in Figure 3, the mobile communication vehicle in the mobile communication node is the primary hub for the secondary communication circle's coverage. The drone in the mobile communication node, flying above the mobile communication vehicle in real time, is a secondary hub for the secondary communication circle's coverage. When the mobile communication vehicle experiences deteriorating communication quality or a disconnected communication link, the communication terminal seamlessly connects to the drone in the mobile communication node and continues communication services. To reduce the payload of the drone in the mobile communication node, a 5G air interface is introduced to replace the existing wired / satellite link as the base station backhaul. A different frequency networking structure is employed for the link between the mobile communication vehicle in the mobile communication node and the drone's primary communication node. For example, the link between the mobile communication vehicle in the mobile communication node and the drone in the secondary communication circle uses the last 50 Mbps of the 600 MHz bandwidth. The first 50 Mbps of the 600 MHz bandwidth is used between the primary and secondary communication circles, that is, between the drone's primary communication node and the mobile communication vehicle in the mobile communication node.

[0064] Optionally, in a mobile communication node consisting of a mobile communication vehicle and a drone, if a target drone that meets the relay conditions exists, an idle drone is selected as the target drone's relay drone to relay the target drone. Specifically, when the base station transmit power of the target drone falls below a preset threshold, the ground communication terminal connected to the target drone automatically initiates a handover process and switches to the relay drone. The relay drone then relays the target drone and provides service to the communication terminal. Unlike the primary drone communication nodes corresponding to tethered drones in the primary communication circle, the accompanying drones in the secondary communication circle are multi-rotor drones. Therefore, to address the issue of how to achieve long-term operation with limited endurance, this embodiment proposes a customized drone access process that allows multiple drones to implement relay transmission. Specifically, referring to the drone relay handover process shown in Figure 4, drone 2, a mobile communication node serving as the relay drone, takes off and connects to the ground communication link. The network management reduces the base station transmit power of drone 1, the relayed drone, to a certain threshold. At this point, the communication terminal connected to the relayed drone automatically initiates a handover process and switches to the relay drone to provide service. Among them, the relayed drone is the target drone that meets the relay conditions. The relay conditions may be that the drone has insufficient available power, or the flight time reaches a preset time, etc., and there is no specific limitation on this.

[0065] In this embodiment, by deploying the networking architecture of the first-level communication circle, the second-level communication circle and the third-level communication circle, the communication coverage of the emergency area is gradually advanced, which can expand the communication coverage, improve the deep coverage capability, and meet the emergency communication needs in large-scale disaster relief scenarios.

[0066] Furthermore, in the related art, the communication coverage of a single UAV is limited by the UAV's payload capacity, and it cannot carry a high-power base station, resulting in a limited coverage range and insufficient deep coverage capability. However, the present disclosure adopts a three-level communication circle networking architecture, especially introduces a convenient RF amplification unit in the third-level communication circle, which has flexible deployment and can extend the coverage range of the second-level communication circle to a greater depth, thereby solving the problem of insufficient deep coverage capability.

[0067] The embodiments of the present disclosure also provide a method for implementing a communication system in an emergency rescue and disaster relief scenario, which is used to implement and deploy the communication system in the emergency rescue and disaster relief scenario described in the above embodiments. The method for implementing a communication system in an emergency rescue and disaster relief scenario provided by the embodiments of the present disclosure can correspond to the communication system in the emergency rescue and disaster relief scenario described in the above embodiments.

[0068] Specifically, referring to FIG5 , FIG5 is a flow chart of a communication system implementation method in a disaster rescue scenario provided by an embodiment of the present disclosure. Based on FIG5 , the communication system implementation method in a disaster rescue scenario provided by an embodiment of the present disclosure includes:

[0069] Step 100: Deploy a corresponding number of UAV main communication nodes in the emergency area according to the size of the emergency area to form a primary communication circle;

[0070] Step 200: deploying mobile communication nodes in the emergency area to form a secondary communication circle; the mobile communication nodes are equipped with base stations, and the base stations are connected to the main communication nodes of the drones via 5G air interfaces;

[0071] Step 300: deploy radio frequency amplification nodes in the emergency area to form a three-level communication circle.

[0072] When implementing a communication system for emergency rescue and disaster relief scenarios, a corresponding number of drone primary communication nodes are deployed within the emergency area, forming a primary communication circle. The primary drone communication nodes can include one or more, and the emergency area is a safe area within the emergency rescue and disaster relief area. The number of primary drone communication nodes deployed can be determined based on the size of the emergency area and the area within the emergency area where communication needs to be guaranteed.

[0073] Furthermore, mobile communication nodes are deployed within the primary communication circle to form a secondary communication circle. These mobile communication nodes are equipped with base stations, which connect to the primary drone communication nodes within the primary communication circle via 5G air interfaces. As the emergency relief safety zone continues to expand, the primary drone communication nodes will no longer be able to meet communication coverage requirements. By deploying base stations on mobile communication vehicles, mobile unmanned vehicles, and combinations of mobile communication vehicles and drones, communication coverage can be further extended within the primary communication circle, thereby expanding the communication coverage area. Furthermore, using 5G air interfaces instead of existing wired / satellite links as base station backhaul can not only reduce the weight of drone-borne equipment, but also enable the mobile communication nodes in the secondary communication circle to connect to the primary drone communication nodes in the primary communication circle using low-frequency signals. These mobile communication nodes act as relays for communication services, and the base stations on the mobile communication nodes connect to the primary drone communication nodes via 5G air interfaces, thus avoiding interference.

[0074] Radio frequency amplification nodes are deployed within the secondary communication circle to form a tertiary communication circle. This tertiary communication circle can further advance the communication coverage on the basis of the secondary communication circle through portable and flexible RF amplification units. Specifically, the emergency area is prone to signal penetration due to its complex and diverse terrain, resulting in insufficient signal depth coverage. Based on this, a tertiary communication circle is formed using a portable RF amplification unit, which can be flexibly deployed within the emergency area, thereby improving the signal depth coverage capability. Optionally, the portable RF amplification unit relies on clean energy such as wind and / or solar energy for power supply, which will not affect the complexity of the network architecture and will have lower damage losses.

[0075] Optionally, in some embodiments, the emergency area is variable. As the rescue and disaster relief area continues to advance and the safe area continues to expand, the deployed first-level communication circle may not be able to meet the demand. Therefore, the main communication nodes of drones can be flexibly added between the first-level communication circle and the second-level communication circle to continuously expand the coverage of the first-level communication circle, forming an overall networking architecture in which the first-level communication circle is responsible for fixed communication guarantee, and the second-level communication circle and the third-level communication circle are responsible for mobile rescue and disaster relief communication guarantee.

[0076] Optionally, a ground mooring box is deployed in the emergency area to supply power to the main communication node of the UAV.

[0077] Referring to Figure 6 , in one embodiment, based on the deployed primary, secondary, and tertiary communication circles, as the emergency area continues to expand, new primary drone communication nodes are deployed between the primary and secondary communication circles within the primary communication circle. Similarly, based on the newly deployed primary drone communication nodes, new mobile communication nodes can be deployed between the secondary and tertiary communication circles, and new RF amplification nodes can be deployed within the tertiary communication circle.

[0078] It should be noted that in each embodiment provided in the present disclosure, the communication system in the emergency rescue scenario is described as having a three-level communication circle. In actual applications, depending on the size of the emergency rescue area and the deployment of the main communication nodes, mobile communication nodes and portable radio frequency amplification units of drones, a communication system with a four-level communication circle, a five-level communication circle, or even more levels of communication circles can be formed, which will not be repeated here.

[0079] In some embodiments, a communication system with a three-level communication circle is formed by deploying it layer by layer, and the communication coverage is gradually expanded, thereby solving the problems of limited coverage and insufficient deep coverage capabilities of a single drone communication coverage.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.

Claims

1. A communication system for emergency rescue and disaster relief, comprising: The first-level communication circle includes multiple drone main communication nodes; The main communication node is connected to the core network via a satellite link; The secondary communication circle includes multiple mobile communication nodes, each of which is equipped with a base station, and the base station is connected to the main communication node of the UAV through an air interface; The third-level communication circle includes a radio frequency amplification node connected to the mobile communication node.

2. The communication system in the emergency rescue and disaster relief scenario according to claim 1, wherein, The main communication node of the UAV is equipped with an integrated dual-band base station, which is configured to form a multi-cell network in the emergency area; The communication system also includes a ground mooring box for supplying power to the main communication node of the UAV.

3. The communication system in the emergency rescue and disaster relief scenario according to claim 2, wherein, The number of the main communication nodes of the UAV is determined according to the size of the emergency area; The size of the emergency area is variable, and the number of the main communication nodes of the UAV corresponding to the emergency area is adjustable.

4. The communication system in the disaster relief scenario according to any one of claims 1-3, wherein, The mobile communication node includes at least one of a mobile communication vehicle, a mobile unmanned vehicle, and a combination of a mobile communication vehicle and an unmanned aerial vehicle.

5. The communication system in the disaster relief scenario according to claim 4, wherein, When the mobile communication node includes a combination of a mobile communication vehicle and a drone, the drone serves as a backup for the communication link of the mobile communication vehicle, and the backup method includes the drone flying above the mobile communication vehicle in an accompanying manner.

6. The communication system in the disaster relief scenario according to any one of claims 1-5, wherein, The radio frequency amplification node is powered by wind energy and / or solar energy.

7. The communication system in the disaster relief scenario according to any one of claims 1-6, wherein, The coverage areas of the primary communication circle, the secondary communication circle and the tertiary communication circle include each other.

8. The communication system in the disaster relief scenario according to claim 5, wherein, The link between the UAV in the mobile communication node and the mobile communication vehicle in the mobile communication node and the UAV main communication node adopts a heterogeneous frequency networking structure.

9. A method for implementing a communication system in a disaster rescue scenario, for implementing the communication system in a disaster rescue scenario according to any one of claims 1 to 8, the method comprising: According to the size of the emergency area, a corresponding number of UAV main communication nodes are deployed in the emergency area to form a primary communication circle; Deploy mobile communication nodes in the emergency area to form a secondary communication circle; the mobile communication nodes are equipped with base stations, and the base stations are connected to the main communication nodes of the UAVs through air interfaces; Radio frequency amplification nodes are deployed in the emergency area to form a three-level communication circle.

10. The method for implementing a communication system in a disaster relief scenario according to claim 9, wherein, When the primary communication circle expands along with the emergency area, additional drone main communication nodes are deployed to expand the coverage of the primary communication circle.

11. The method for implementing a communication system in a disaster relief scenario according to claim 9, wherein, The implementation method also includes: A ground mooring box is deployed in the emergency area to supply power to the main communication node of the UAV.

12. The method for implementing a communication system in a disaster relief scenario according to any one of claims 9-11, wherein, The mobile communication node utilizes low frequency access to the main communication node of the UAV in the primary communication circle and acts as a relay to realize the business service of the communication terminal.

13. The communication system in the disaster relief scenario according to claim 9, wherein, The base station carried on the mobile communication node is connected to the main communication node of the drone via 600MHz.

14. A communication method for emergency rescue and disaster relief scenarios, using the communication system for emergency rescue and disaster relief scenarios according to any one of claims 1 to 7, comprising: When the mobile communication node includes a combination composed of a mobile communication vehicle and a drone, the drone flies accompanyingly above the mobile communication vehicle and serves as a backup for the communication link of the mobile communication vehicle.

15. The communication method in the disaster relief scenario according to claim 14, wherein, The communication method further includes: When there is a target drone that meets the relay condition in the mobile communication node of the combination composed of the mobile communication vehicle and the drone, an idle drone is selected as the relay drone for the target drone, and the target drone is relayed. When the transmission power of the base station of the target drone is less than a preset threshold value, the ground communication terminal accessing the target drone automatically starts a handover process and switches to the relay drone, and the relay drone relays the target drone to provide service to the communication terminal.

16. The communication method in the disaster relief scenario according to claim 15, wherein, The relay condition includes that the available power of the drone is insufficient, or the flight duration of the drone reaches a preset duration.

17. The communication method in the disaster relief scenario according to any one of claims 14-16, wherein, The accompanyingly flying drone is a multi-rotor drone, which is different from the main drone communication node.

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