KR20150129600A - Apparatus and method for providing network service using drone - Google Patents

Abstract

Disclosed is a method for providing a network service based on a drone formation. The method for providing a network service based on a drone formation according to the present invention comprises the following steps of: allocating network connection information from a wireless router of a ground control system (GCS) to a drone in a subnet made of a drone formation; enabling the drone to transmit a packet based on the network connection information; and allocating the network connection information of a user terminal from the ground control system (GCS) to the drone and enabling the drone to transmit the network connection information to the user terminal when the user terminal is connected to the subnet, thereby providing an effective network service to a region where a network situation is bad.

Description

[0001] APPARATUS AND METHOD FOR PROVIDING NETWORK SERVICE USING DRONE [0002]

The present invention relates to a method and a device for providing a network service using a drones, and more particularly, to a network service providing method using a dron to provide a network service effectively for a network shadow area where the network service is limited due to a physical limitation And a device therefor.

In the case of disaster areas, sudden crowded areas, war zones or mountainous areas, the base station is difficult to operate normally, or the network service is not properly provided due to the absence of the base station. This reality is not only a mere inconvenience but also a security guarantee for users. For example, in the event of a major disaster such as an earthquake, war, or aircraft accident, the availability of Internet services has a direct impact on life sciences.

Accordingly, various attempts have been made to provide network services for the network shadow areas where the network service is not properly provided. For example, it is intended to provide network service to a corresponding region through a mobile base station, but the service provision is limited to a certain region due to a physical limitation, or the quality thereof is low.

Attempts to provide Internet services using flying objects have included Google's Loon project and Facebook's internet distribution project. Google's Loon project is a project to attach a network service device to a large, self-powered hot-air balloon and send it to the stratosphere to provide Internet services to users located below. Users located below can communicate with loons using a separate transceiver, and the loones communicate traffic to the backbone by communicating with each other. The location of the loops does not change much, so the network structure has a simple static form. Facebook is a project that uses UAV (Unmanned Aerial Vehicle), which is powered by solar power, to provide network services in areas where the Internet is not available. The project also aims to provide Internet services in the area of hundreds of kilometers below, flying at an altitude of more than 20 km above the altitude of existing aircraft.

On the other hand, Cisco's Network Emergency Response Vehicle (NERV) is the representative service for urgent internet service delivery to disaster areas. NERV has a form of truck with various network equipment and is dispatched to the disaster area to provide satellite communication based network service quickly. Through this service, it is aimed that the various disaster countermeasures institutions can be quickly connected to the relevant region.

Google's Loon project targets a very large area, and horizontal or vertical movement is limited due to the nature of the hot air balloon. Furthermore, in order to use this service, separate network hardware must be used on the ground. In the event of a disaster, this infrastructure is damaged and is not suitable for providing network services in a disaster situation.

As for the above-mentioned Facebook project, as in the case of the Google Loon project, a wide area is targeted, and a separate device is needed on the ground, so that a network suitable for a disaster situation can not be constituted.

Cisco's NERV can also provide network services to disaster areas, but its purpose is to make it more meaningful to provide a base for communicating with various disaster response agencies, rather than providing services to users in disaster areas have. In addition, due to the limitation of movement along the ground, it is disadvantageous in that it is limited to provide the network service throughout the disaster area, or a lot of time is consumed.

On the other hand, if a network is constructed in a disaster area using a drone, the above-mentioned problems can be solved, but there is no description about how to configure the network in detail.

Accordingly, it is an object of the present invention to provide a method and apparatus for providing a network service using a drone, which provides an effective network service in a poor network environment.

Also, the present invention provides a dron that includes a network module for providing the network service.

The present invention also provides a method for providing network services by configuring various networks based on a drone flight for providing the network service.

According to an aspect of the present invention, there is provided a method for providing a network service based on a drone flight, the method comprising: receiving a control command from a GCS having a Dynamic Host Configuration Protocol (DHCP) The method comprising the steps of: a) receiving a network connection information in a subnet configured by the drone flight from a wireless router of the GCS, wherein the drones are provided with network connection information ; Transmitting the packet based on the network connection information; And if the user terminal accesses the subnet, allocating network connection information of the user terminal from the GCS to the drone, and delivering the network connection information to the user terminal.

Preferably, the packet forwarding step may forward the packet by a routing scheme in which the dron changes the topology through exchange of control messages with the surrounding drones and maintains the routing information.

Advantageously, the packet forwarding step may allow the drones to forward the packet by a repetition scheme through broadcasting.

Preferably, the step of transmitting the network connection information of the user broadcasts the network connection request information of the user terminal connected to the subnet through the network interface created in the infrastructure mode, GCS); And allocating network connection information in a range different from the network connection information allocated to the drones by the drones, and transmitting the network connection information to the user terminals.

According to another aspect of the present invention, there is provided a method of providing a network service based on a drone flight, the method comprising the steps of: receiving a control command from a ground control device (GCS) Wherein a master dron with a dynamic host configuration communication protocol (DHCP) among a plurality of drones constituting the formation is allocated network connection information from a wireless router of the GCS, step; Assigning network connection information of each of the plurality of drones constituting the formation to the master drones; And transmitting the network connection information of the user terminal to the master terminal through the plurality of drones constituting the flight when the master terminal connects to the subnet constituted by the dragon flight .

Preferably, the master drone maintains an appropriate distance from the ground control device (GCS) to maintain communication with the ground control device (GCS).

Preferably, when one or more warheads are configured, a master dron included in each of the one or more warheads manages network connection information of the warhead to divide the network into units of warheads, and through the master drones, Communication can be maintained.

Preferably, the master drones may include a main master dronon and an auxiliary master drones for assisting the main master drones.

According to another aspect of the present invention, there is provided a method for providing a network service based on a drone flight, the method comprising: receiving a control command from a GCS and having a dynamic host configuration communication protocol (DHCP) A method of providing a network service using a plurality of drones, the method comprising the steps of: (a) receiving a network connection information in a subnet configured from the wireless router of the GCS, ; And when a user terminal accesses a subnet constituted by the drones, the drones closest to the user terminals allocate network connection information of the user terminals and deliver the network connection information to the user terminals.

Preferably, the step of allocating the network connection information of the drones comprises the step of, at a point of time when the drone flight is located in the GCS, exchanging information with the wireless router of the GCS, Network connection information can be assigned.

Preferably, the step of allocating the network connection information of the drones comprises the steps of multi-hoping the drones via the drones connected to the ground control device (GCS) when the drone flight starts traveling, GCS) and receive the network connection information.

Preferably, when a first user terminal of the plurality of drones constituting the formation is influenced by the influence of the second dron, the second dron is connected to the network connection information request of the first user terminal ; And the second drones allocating new network connection information to the first user terminal.

The present invention can provide a network service to a region by quickly dispatching them to an area where the network conditions are poor, such as a disaster area, by using a plurality of drones including a network module, The advantage is that it can effectively provide network services in this harsh area.

Figure 1 is a diagram illustrating the drones used to implement the present invention.
FIG. 2 is a diagram illustrating a structure of a network module installed in the drone illustrated in FIG. 1 to provide a network service.
FIG. 3 is a diagram illustrating an example of channel usage status of drones in a drone network to which the present invention is applied.
4 is a diagram illustrating an example of a logical topology structure formed in three dimensions in the drones network to which the present invention is applied.
FIG. 5 is a diagram illustrating an example of a network structure for providing a network service based on a drone flight according to the first embodiment of the present invention.
6 is a diagram illustrating a procedure of a method of providing a network service based on a drone flight according to the first embodiment of the present invention.
FIG. 7 is a view illustrating another example of a network structure for providing a drone formation-based network service according to the first embodiment of the present invention.
8 is a diagram illustrating a process procedure for a method of providing a network service based on a drone flight according to a second embodiment of the present invention.
9 is a diagram illustrating an example of a network structure for providing a network service based on a drone flight according to a third embodiment of the present invention.
10 is a diagram illustrating a process procedure for a method of providing a network service based on a drone flight according to a third embodiment of the present invention.
11 is a view illustrating a process procedure of a method of providing a network service based on a drone flight according to a fourth embodiment of the present invention.
12 is a diagram illustrating a process procedure for a method of providing a network service based on a drone flight according to a fifth embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Throughout the specification and claims, where a section includes a constituent, it does not exclude other elements unless specifically stated otherwise, but may include other elements.

The drones applied to the present invention include all flying objects, such as a UAV (Unmanned Aerial Vehicle), an unmanned airship, an unmanned aerial vehicle, or the like, which are operated by a person or not.

Figure 1 is a diagram illustrating the drones used to implement the present invention. Referring to FIG. 1, it is preferable that the drones 100 fly over a specific area and provide network services to terminals included in the corresponding area, and form a flight together with a plurality of drones. At this time, a dragon flight is a bundle of drones that are jointly tasked to carry out one great mission. By managing the drones as flight units rather than a single object, a single dragon performs a mission that is difficult to carry out alone .

Most of these drones use telemetry to communicate with a remote control or Ground Control Station (GCS). This is because the bandwidth is very limited because it is separate from the commonly used Internet network. Therefore, a separate network module is required to provide the network service using the drones. The network module is required to provide the existing simple type of wireless communication and to support the communication with the user and the communication between the drones in parallel, Is required. An example of such a network module architecture is illustrated in FIG.

2 is a block diagram illustrating the structure of a network module installed in the dron shown in FIG. 1 to provide a network service. Referring to FIG. 2, a network module mounted on the drones includes a plurality of wireless communication interfaces A processing unit 130, an operating system 140 and a network management software 150. The communication interface 150 is a communication interface .

A plurality of wireless communication interfaces 110 provide a wireless communication interface between a plurality of drones or between a drones and user terminals. For this purpose, the plurality of wireless communication interfaces 110 include both physical and virtual distinctions, and can perform any communication according to the situation such as WiFi, Zigbee, Z-wave, 3G, LTE, WiMax Equipment can also be applied. While each of the plurality of wireless communication interfaces 110 is used separately from the other interfaces. For example, one of the plurality of wireless communication interfaces 110 serves as a point where users located in the user's area can connect to the wireless communication interface 110, exchanges data with each of the users, 110 may be used for communication with other drones. If the interface is activated in the ad-hoc mode, at least one interface is required. In the case of incorporating a frequency efficiency enhancement technique through channel segmentation, an interface is required for the number of divided frequencies (n) do. In addition, if the interface is activated in an infrastructure mode and other drones are configured to be able to be connected to it, a minimum of two interfaces are required to do so. In this case, one interface operates in an infrastructure mode that allows other drones to connect to the other, and the other serves as a station to other drones' interfaces. On the other hand, if the technique of dividing the frequency is not applied, it is possible to perform both of these roles by creating a virtual interface on one interface. If all the n drones in the vicinity use different frequency bands, These interfaces must be separate. The number of interfaces is required to connect to the surrounding drones. In case of the same frequency band, the hardware interface is replaced by a virtual interface. On the other hand, in case of a dron connected to a GCS or a base station where a backbone network is located, an additional wireless communication interface is required. The additional wireless communication interface may be connected to the backbone network of the GCS and may operate as a gateway or communicate with a backbone network within a reachable distance using an egg, LTE, or 3G module. A particular Net-Drone itself may be equipped with a compact / lightweight base station module to serve as a base station in a cell network. Through this, network service can be supported in the target area. It is also possible for a lightweight GCS to be mounted on a master drone to intelligently and spontaneously control other drones.

The plurality of wireless communication interfaces 110 preferably include an antenna 120 for increasing channel utilization and efficiently using wireless transmission energy, Is preferably in the form of a directional antenna. This is because the altitude of the user and the drone are clearly distinguished on the three-dimensional drone network, so that they can be efficiently separated by a simple directional antenna alone. That is, in the case of an interface for communication between a user and a drone, generating a radio signal only downward is more efficient from the viewpoint of frequency utilization, and in the case of an interface for communication between drones, By sending a signal only to the part, the influence on other communication can be reduced. In addition, by using a directional antenna, it is possible to transmit signals farther or more intensely with the same energy, thereby remarkably improving the communication efficiency.

In addition, the plurality of wireless communication interfaces 110 may use a frequency separation arrangement technique to prevent communication performance from being greatly degraded when communication with the user and communication between the drones coexist. That is, the plurality of wireless communication interfaces 110 may use different first and second frequency bands, respectively. For example, IEEE 802.11n technology supports both 2.4 GHz band and 5 GHz band communication, in which communication between a user and a drone communicates with channels in the 2.4 GHz band to reduce the influence of obstacles, In consideration of LOS, inter-communication can improve channel utilization by using channels located in the 5 GHz band.

Meanwhile, the plurality of wireless communication interfaces 110 may communicate with other drones using channels distributed among the channels located in the second frequency band (for example, 5 GHz) allocated for communication with the drones It is preferable to use different channels with other adjacent drones. This does not vary the channel used for the connection between the drones, but rather the channel distribution of the network interface providing the service to the user. Fig. 3 shows an example in which frequency is distributed and arranged. Referring to FIG. 3, it can be seen that cells adjacent to each cell use different channels. For example, it can be seen that the three drones 10a, 10b, and 10c commonly using the first channel (Ch.1) are connected to each other through the other drones using different channels.

The packet processing unit 130 is hardware for processing various packets received from the plurality of wireless communication interfaces 110. Various processing units can be widely used depending on the situation and purpose. For example, using ARM-based, low-power, small-scale units can reduce the impact on weight and energy-sensitive drones.

The operating system 140 connects sub-interfaces and applications, and various operating systems such as Linux, Windows, and Android can be used. And can effectively support the operation of the network management module 150 through these.

The network management module 150 performs various drone flight network management functions such as routing, filtering, and the like.

4 is a diagram illustrating an example of a logical topology structure formed in three dimensions in the drones network to which the present invention is applied. Generally, when the geographical position of the drone is viewed as x and y on the two-dimensional plane, the frequency band operates on the z axis to form a three-dimensional logical topology as illustrated in FIG. If the geographical position of the drones is viewed in three dimensions of x, y, z, the frequency axis is added to form a four-dimensional network topology.

FIG. 5 illustrates an example of a network structure for providing a network service based on a drone flight according to the first embodiment of the present invention. Referring to FIG. 5, all the drones 100a, 100b, 100c, and 100d and the user terminals 300a, 300b, 300c, 300d, 300e, and 300f belong to the same subnet (A). In this case, a dynamic host configuration protocol (hereinafter referred to as a DHCP) server for assigning network connection information (e.g., IP address) to the drone is installed in the GCS 200A, ) Manages both the drone flight and the network connection information (e.g., IP address) of the users. If the network uses other network connection information than the IP address, the GCS 200A can use a separate naming allocation system. On the other hand, the network interfaces installed in the drones 100a, 100b, 100c and 100d do not have a DHCP function. When receiving the DHCP request message from the user, the network interfaces simply broadcast the request message to the GCS 200A , And receives the result from the GCS 200A and provides it to the user.

The network having such a structure can reduce the network processing that each of the drones 100a, 100b, 100c, and 100d has to perform by collectively managing the network-related processing in the GCS 200A. Since all users belong to the same subnet, It is possible to transfer the data to the GCS 200A. Also, when users communicate with each other within the service area of the drones, since all users are located within the same subnet mask, data can be easily transmitted without going through a separate router. In the illustrated network structure, even if a user moves down to another drones, there is no need to reallocate an IP address, and even if a user is in any of the drone formations, communication with a unique ID is possible, which is a strong feature of handover. Also, packets can be sent to GCS without a separate address translation process. Therefore, the operation structure of the network is simplified.

6 is a diagram illustrating a process procedure of a method of providing a network service based on a drone flight according to a first embodiment of the present invention. In order to provide a network service based on a drone flight, .

Referring to FIG. 6, a process of forming a network to provide the drone formation-based network service is as follows.

First, in step S105, the GCS 200A allocates network connection information (DR_IP) in the subnet configured by the drone flight to the drones 100 forming a connection with a wireless router connected to the backbone network.

In step S110, the drones 100 to which the network connection information DR_IP is allocated transmit packets based on the network connection information DR_IP. At this time, the drones 100 are connected to a routing system for changing the topology and maintaining the routing information by exchanging control messages with the surrounding drones, or by repeating through broadcasting .

In step S115, after the user terminal 300 accesses the subnet, it transmits a network connection information request message (Req_MSG) to the drone 100. At this time, the user terminal 300 preferably connects to the subnet through a network interface created in an infrastructure mode.

In step S120, the drone 100 broadcasts the network connection information request message (Req_MSG) to the GCS 200A.

In step S125, the GCS 200A having received the network connection information request message (Req_MSG) assigns the network connection information (User_IP) of the user terminal to the drones 100. [

In step S130, the drones 100 transmit the network connection information (User_IP) of the user terminal received from the GCS 200A to the user terminal 300. [ The user who has been assigned the network connection information (User_IP) performs Internet communication with the outside using the network connection information (User_IP). When communicating with other users located in the drone network, . If the user who has been assigned the network connection information (User_IP) moves to another drones, the IP address reallocation does not occur in the network structure as illustrated in FIG. This is because they all belong to the same subnet.

Referring to FIG. 6, it can be seen that the generation time of the dragon flight is different from the time when the user receives the network connection information (User_IP). Therefore, the GCS 200A can set such that the user and the drone are distinguished by using this procedural property. That is, the GCS 200A can differentiate the range of addresses to be allocated to each of the user terminal and the drones, so that the user can confirm whether the corresponding device is the user terminal or the drone even if only the address information is provided. Through these, the GCS 200A can easily multicast a control message to be transmitted only to the drone, and it is advantageous in that unnecessary spread of data can be reduced compared with broadcasting.

An example of assigning different ranges of addresses to each of the user terminal and the drones is illustrated in FIG.

FIG. 7 is a view illustrating another example of a network structure for providing a drone formation-based network service according to the first embodiment of the present invention. In the example of FIG. 7, the range of values assigned to the fourth section among the network addresses composed of four sections are made different from each other, so that the drones can be distinguished from the user terminals. Referring to FIG. 7, it can be seen that in the case of the drones, 2 through 29 are allocated to the fourth section, and the subsequent values (30 through 254) are assigned to the users.

FIG. 8 is a diagram illustrating a process procedure for a method of providing a network service based on a drone flight according to a second embodiment of the present invention, in which the drone and the user in each flight form a network forming a structure belonging to the same subnet . In this architecture, the DHCP server is managed by a master drones that lead the formation. Or there may be a method of receiving IP through a specific DHCP server present in the drone flight. However, in general, the management by the master (master) drones is superior in terms of performance since the drones are managed together with the gateway network and DHCP. For this purpose, in the process of organizing the dragon formation, each formation determines a master dragon, and a master dragon is wirelessly connected to the GCS 200 to manage the IP of the user and the remaining drones . In addition, this network structure facilitates network management by separating subnets by squadron in situations where multiple squadrons are performing operations.

Referring to FIG. 8, a process of forming a network to provide the drone formation-based network service is as follows.

First, in step S205, the GCS 200 transmits network connection information DR (M) _IP in the subnet configured by the drone flight to the master drones 100M forming a connection with a wireless router connected to the backbone network . At this time, the master drone 100M maintains a proper distance from the GCS 200A and does not cut off communication, and deploys the squadron so that other squads can maintain communication (e.g., multi-hop) with the squadron desirable.

In step S210, the master drones 100M allocate network connection information of each of the plurality of drones constituting the formation. That is, the master drones 100M allocate the network connection information DR_IP of the drones 100 and transmit them to the drones 100. FIG.

In step S215, after the user terminal 300 accesses the subnet, it transmits a network connection information request message (Req_MSG) to the drone 100.

In step S220, the drones 100 transmit the network connection information request message (Req_MSG) to the master drones 100M.

In step S225, the master drones 100M that have received the network connection information request message (Req_MSG) allocate the network connection information (User_IP) of the user terminal 300 and deliver it to the drones 100. [

In step S230, the drones 100 transmit the network connection information (User_IP) of the user terminal 300 to the user terminal 300. [

In this manner, in the second embodiment of the present invention, the master drones manage the network connection information of the drones in units of flights, thereby dividing the entire network into units of flights. Also, if the user connected to the network moves to another drone, the IP address reallocation does not occur. This is because the drones and users in each flight belong to the same subnet.

Meanwhile, in a dron network having such a structure, when one or more warheads are formed, the master dron included in each of the one or more warheads manages network connection information of the warhead to divide the network into unit units, It is desirable to maintain communication between the one or more flights.

In addition, it is preferable to further include an auxiliary master drones for assisting the master drones in the network structure, and connect the auxiliary master drones to a wireless router. This increases the number of connection points with the wireless router in the network structure and reduces the communication overload of the master drone.

9 is a diagram illustrating an example of a network structure for providing a network service based on a drone flight structure according to a third embodiment of the present invention in which users are managed by respective drone, For example.

In the network structure illustrated in FIG. 9, there are two types of subnets. That is, each of the drones assigns an IP address to users located in their area by using the DHCP server function, and the unique subnets (AA, AC, AD) generated by the drones and the GCS 200 are transmitted to the drones 100Aa, 100Ab, 100Ac, and 100Ad), which are generated by assigning network connection information to the DRON subnet (A). At this time, each of the drones preferably has a network address translation (NAT) function so that data of a user belonging to the own subnet can be transmitted through the drone subnet.

In this network structure, each user is divided into separate subnets based on local information, so that broadcasting traffic can be effectively restricted, thereby greatly improving network performance. Because drones are tied together in a single network, complex network management techniques do not have to be introduced. Broadcasting can easily convey control messages and other messages to be processed at various drone flight levels, minimizing the impact of change . Or intra-subnet routing using wireless multi-hop communication to efficiently transmit data.

In this case, when the user enters into the influence of another dron, a new connection with the network module of the corresponding dron should be established and an IP address reassignment process for receiving a new IP should be performed.

A more detailed network formation process is illustrated in FIG.

10 is a diagram illustrating a process procedure for a method of providing a network service based on a drone flight according to a third embodiment of the present invention. Referring to FIG. 10, a process for forming a network as illustrated in FIG. As follows.

First, in step S305, the GCS 200 allocates network connection information (DR_IP) in a subnet configured by the drone flight to a drone 100A forming a connection with a wireless router connected to a backbone network. At this time, the network connection information (DR_IP) assignment of the drones is performed by exchanging information with the wireless router of the GCS when the drone flight is located in the GCS , The drone can be multi-hoped through information exchange with the wireless router of the GCS via the drones connected to the GCS when the drone flight has started running have. To this end, a dynamic host configuration communication protocol (DHCP) server 160A is mounted on the drones 100A.

In step S310, the user terminal 300 accesses the subnet and transmits a network connection information request message (Req_MSG) to the drone 100A.

In step S315, the drones 100A receiving the network connection information request message (Req_MSG) assign network connection information (User-IP) of the user terminal 300 based on the DHCP server 160A, (300).

As described above, in the network structure according to the third embodiment of the present invention, when a user enters a sphere of influence of another dron by managing each unique subnet, a new connection is established with the network module of the corresponding dron, . For example, if a first user terminal in the influence zone of the first dron among a plurality of drones constituting the formation is changed to an influence of the second dron, the second dron may request the network connection information of the first user terminal And the second drones should perform a series of processes of allocating new network connection information to the first user terminal.

11 is a diagram illustrating a process procedure for a method of providing a network service based on a drone flight according to a fourth embodiment of the present invention, in which users are managed by respective drone, A network structure managed through a network. In this structure, a master server (drones) and a general drones (host) each have a DHCP server. Meanwhile, GCS can easily manage the information received from each flight by separating it into network levels. In the case of control messages, the GCS also sends a broadcasting command to each master master drone, .

Referring to FIG. 11, a network formation process for providing a drone formation-based network service according to a fourth embodiment of the present invention is as follows.

First, in step S405, the GCS 200 transmits network connection information DR (M) _IP in the subnet configured by the drone flight to the master drones 100M forming a connection with a wireless router connected to the backbone network . At this time, it is preferable that the master drone 100M maintains a proper distance from the GCS 200A and does not cut off communication, and develops a flight (including multi-hop) so that other flights can maintain communication with itself Do.

In step S410, the master drones 100M allocate the network connection information of each of the plurality of drones constituting the formation. That is, the master drones 100M allocate the network connection information DR_IP of the drones 100 and transmit them to the drone 100.

In step S415, the user terminal 300 accesses the subnet and transmits a network connection information request message (Req_MSG) to the drone 100A.

In step S420, the drones 100A receiving the network connection information request message (Req_MSG) assign network connection information (User-IP) of the user terminal 300 based on the DHCP server 160A, 300).

As described above, in the fourth embodiment of the present invention, the master drones manage the network connection information of the drones on a flight unit basis, thereby dividing the entire network into flight units.

FIG. 12 illustrates a method of providing a network service based on a drone flight, according to a fifth embodiment of the present invention, in which each user is managed by a drone, and each of the drone has an independent network. In this structure, each of the drones 100Ab, 100Ac, and 100Ad has its own independent network B, C, D without being managed by the GCS 200. [ Accordingly, each of the drones 100Ab, 100Ac, and 100Ad directly applies the IP address to the users connected thereto by using their own DHCP server. However, when exchanging data with other drones, each dron operates as a single router and delivers data.

The independent network structure is advantageous in that the network performance is superior to other structures because each of the drones searches for an optimal path and transmits data to the GCS. However, As shown in Fig. Each dron should manage the routing table and the data traffic of the users will be transmitted to the GCS along the path specified in the table. In this case, a case where one drones provides a service is also included. In this structure, the drone does not need to form a plane, and the network service can be sufficiently provided by only a single object.

Meanwhile, as a sixth embodiment of the present invention, all users and all drones may form a structure (not shown) that operates as an independent node of an ad-hoc network. The network structures according to the first to fifth embodiments of the present invention discussed above have a structure in which a connection between a drones and a user is established, that is, a case where the network interface of the drones operates in an infrastructure mode. However, the sixth embodiment is a structure in which all users and all the drones operate as independent nodes of the ad-hoc network. In this case, the traffic of the user is not transmitted only to the specific object through the drone, but may reach the destination through multi-hop communication between other users in the vicinity. It is also possible to transmit data using a communication between the drones of a specific section through communication between users in a specific section according to the density of the user and the drones. Various routing protocols such as location-based routing protocol, proactive routing protocol, and reactive routing protocol can be combined.

The above-described embodiments of the present invention can be embodied in a general-purpose digital computer that can be embodied as a program that can be executed in a computer and operates the program using a computer-readable recording medium.

The computer readable recording medium includes a magnetic storage medium (e.g., ROM, floppy disk, hard disk, etc.), optical reading medium (e.g., CD ROM, DVD, etc.).

The present invention has been described with reference to the preferred embodiments.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

Claims (8)

A method of providing a network service based on a dragon flight based on a control of a land control device (GCS) equipped with a dynamic host configuration communication protocol (DHCP) function and providing a network service using a plurality of drones constituting a flight,
Receiving the network connection information in the subnet configured by the drone flight from the wireless router of the GCS;
Transmitting the packet based on the network connection information; And
And when the user terminal accesses the subnet, allocating the network connection information of the user terminal from the GCS to the drone, and delivering the network connection information to the user terminal. Delivery method.
The method as claimed in claim 1, wherein the step
Broadcasting the network connection request information of the user terminal connected to the subnet through the network interface created in the infrastructure mode, and transmitting the network connection request information to the GCS; And
And allocating network connection information in a range different from the network connection information allocated to the drones by the drones, and delivering the network connection information to the user terminal.
A method of providing a network service based on a dragon flight based on a control of a land control device (GCS) and providing a network service using a plurality of drones constituting a flight,
Receiving a network connection information from a wireless router of the GCS, the master dron being equipped with a dynamic host configuration communication protocol (DHCP) function among a plurality of drones constituting the formation;
Assigning network connection information of each of the plurality of drones constituting the formation to the master drones; And
When the user terminal accesses a subnet constituted by the drones, the master drones allocates network connection information of the user terminals and transmits the network connection information to the user terminals through a plurality of drones constituting the formation To provide a network service based on a drone flight.
The method of claim 3,
Wherein the master drone maintains an appropriate distance from the ground control device to maintain communication with the ground control device.
1. A method of providing a network service based on a dragon flight based on a control of a terrestrial control unit (GCS) and equipped with a dynamic host setting communication protocol (DHCP) function and providing a network service using a plurality of drones constituting a flight,
Receiving the network connection information in a subnet configured by the drone flight from the wireless router of the GCS; And
And when a user terminal accesses a subnet constituted by the dragon flight, allocating network connection information of the user terminal to the user terminal, the donor closest to the user terminal transmits the network connection information to the user terminal. Service delivery method.
6. The method of claim 5, wherein the droning network connection information assignment step
Characterized in that at the point of time the drone flight is located in the GCS, the drones are allocated the network connection information through information exchange with a wireless router of the GCS. A method for providing a network service.
6. The method of claim 5, wherein the droning network connection information assignment step
When the drone flight starts to run, the drone performs information exchange with the wireless router of the GCS via multi-hop through the drones connected to the GCS, Wherein the information is allocated to the first service provider.
6. The method of claim 5,
When a first user terminal in the influence zone of the first dron among the plurality of drones constituting the formation is changed to the influence of the second dron,
Receiving a network connection information request of the first user terminal from the second drones;
Further comprising: assigning new network connection information to the first user terminal by the second drones.

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