Apparatus and methods for managing routing information and session control for unmanned aerial system (UAS) communications

Abstract

A method for session control by a session management function (SMF) in a mobile communication system for unmanned aerial service (UAS) communication is provided. A protocol data unit (PDU) session establishment request message including a data network name (DNN) configured for a UAS, a first user equipment (UE) identifier, and a second UE identifier for UAS communication with the first UE is received from the first UE, routing information of the second UE is obtained from a UAS traffic management (UTM) based on the PDU session establishment request message; a PDU session is established between the first UE and the second UE based on the routing information, and a PDU session establishment response message including PDU session establishment information is transmitted to the first UE.

Description

Technical Field

[0001] This invention relates to a method and apparatus for controlling communication between a UAV user equipment (UE) and a UAV controller (UE) using a wireless communication system. Background Technology

[0002] To meet the increased demand for wireless data services since the deployment of fourth-generation (4G) communication systems, efforts have been made to develop improved fifth-generation (5G) or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also referred to as "post-4G networks" or "post-LTE systems".

[0003] 5G communication systems are considered to be implemented in higher frequency (millimeter wave) bands, such as the 60 GHz band, to achieve higher data rates. To reduce radio wave propagation loss and increase transmission distance, beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive MIMO technologies are discussed in 5G communication systems.

[0004] In addition, in 5G communication systems, development is underway to improve system networks based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, coordinated multipoint (CoMP), and receiver interference cancellation.

[0005] In 5G systems, hybrid frequency shift keying (FSK), quadrature amplitude modulation (QAM), and sliding window superposition coding (SWSC) are developed as advanced coding and modulation (ACM), while filter bank multicarrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA) are developed as advanced access technologies.

[0006] To meet the increased demand for wireless data services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or near-5G communication systems. Therefore, 5G or near-5G communication systems are also referred to as "post-4G networks" or "post-LTE systems." 5G communication systems are considered to be implemented in higher frequency (millimeter wave) bands, such as the 60GHz band, to achieve higher data rates. To reduce radio wave propagation loss and increase transmission distance, beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive MIMO technologies have been discussed in 5G communication systems. Furthermore, development is underway in 5G communication systems based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, coordinated multipoint (CoMP), and receiver interference cancellation. In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) are developed as advanced coding modulation (ACM), while filter bank multicarrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) are developed as advanced access technologies.

[0007] The Internet, a human-centric network for generating and consuming information, is now evolving into the Internet of Things (IoT), where distributed entities, such as things, exchange and process information without human intervention. The Internet of Everything (IoE) is an internet that combines IoT technology and big data processing technology through connections to cloud servers. Recently, technological elements such as sensing technology, wired / wireless communication and network infrastructure, service interface technology, and security technology have been explored for IoT implementation, sensor networks, machine-to-machine (M2M) communication, machine-type communication (MTC), and more. This IoT environment can provide intelligent Internet technology services that create new value for human life by collecting and analyzing data generated between connected things. Through the convergence and combination of existing information technology (IT) and various industrial applications, IT can be applied to various fields including smart homes, smart buildings, smart cities, smart cars or connected cars, smart grids, healthcare, smart devices, and advanced medical services.

[0008] Consistent with this, various attempts have been made to apply 5G communication systems to IoT networks. For example, technologies such as sensor networks, MTC, and M2M communication can be implemented through beamforming, MIMO, and array antennas. The application of cloud radio access networks (RAN), as a big data processing technology, can also be seen as an example of the convergence between 5G and IoT technologies.

[0009] The above information is presented as background information only to aid in understanding this disclosure. No determinations are made, nor are any assertions made regarding whether any of the above can be considered as prior art applicable to this disclosure. Summary of the Invention

[0010] Technical issues

[0011] As mentioned above, with the development of wireless communication systems, various services can be provided, and there is a need for a method to provide unmanned aerial system (UAS) services through wireless communication systems.

[0012] This disclosure addresses at least the aforementioned problems and / or disadvantages, and provides at least the following advantages. Therefore, one aspect of the invention is to provide a method for controlling communication between a UAV (UAV) UE and a UAV controller UE using a wireless communication system.

[0013] Other aspects will be set forth in part in the description which follows, and in part will be apparent from the description or may be learned by practice of the presented embodiments.

[0014] Technical solution

[0015] According to one aspect of this disclosure, a method for Session Management Function (SMF) in a mobile communication system using session control for Unmanned Air Service (UAS) communication is provided. The method involves receiving a Protocol Data Unit (PDU) session establishment request message from a first User Equipment (UE), the PDU session establishment request message including a Data Network Name (DNN) configured for the UAS, a first UE identifier, and a second UE identifier for communicating with the first UE via the UAS; obtaining routing information for the second UE from the UAS Service Management (UTM) based on the PDU session establishment request message; establishing a PDU session between the first UE and the second UE based on the routing information; and sending a PDU session establishment response message including PDU session establishment information to the first UE.

[0016] According to another aspect of this disclosure, a method is provided for a first UE to establish session management for UAS communication in a wireless communication system. The method includes: sending a PDU session establishment request message to an SMF when USA communication with the first UE is required; the PDU session establishment request message including a DNN configured for UAS, a first UE identifier, and a second UE identifier for UAS communication with the first UE; and receiving a PDU session establishment response message including PDU session establishment information from the SMF.

[0017] According to another aspect of this disclosure, an SMF device for session control of UAS communication in a mobile communication system is provided. The SMF device includes a transceiver, a memory, and at least one processor. The transceiver is configured to communicate with a UE and network functions of the mobile communication system. The at least one processor is configured to receive a PDU session establishment request message from the UE, the PDU session establishment request message including a DNN configured for UAS, a first UE identifier, and a second UE identifier, the second UE identifier being used for UAS communication with the first UE via the transceiver. Based on the PDU session establishment request message, the processor obtains routing information of the second UE from a UTM, establishes a PDU session between the first UE and the second UE based on the routing information, and sends a PDU session establishment response message including PDU session establishment information to the first UE via the transceiver.

[0018] According to another aspect of this disclosure, a first UE is provided for establishing a UAS communication session in a mobile communication system. The first UE includes a transceiver, a memory, and at least one processor. The transceiver is configured to communicate with a second UE and the network functions of the mobile communication system. The at least one processor is configured to, when USA communication with the second UE is required, control the sending of a PDU session establishment request message to the SMF. The PDU session establishment request message includes a DNN configured for UAS, a first UE identifier, and a second UE identifier for UAS communication with the first UE. It also receives a PDU session establishment response message including PDU session establishment information.

[0019] Beneficial effects

[0020] The apparatus and methods according to various embodiments of this disclosure can effectively perform control so that UAS communication is actually performed only between UEs permitted by the UTM.

[0021] Other aspects, advantages and salient features of this disclosure will become apparent to those skilled in the art from the following detailed description taken in conjunction with the accompanying drawings, which disclose various embodiments of this disclosure. Attached Figure Description

[0022] The above and other aspects, features, and advantages of certain embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 The overall structure of the Unmanned Aerial Vehicle Service (UAS) according to an embodiment of the present invention is shown;

[0024] Figure 2This is a signal flow diagram illustrating the configuration and control of the data transmission path between a UAS user equipment (UE) and an unmanned aerial vehicle (UAV) controller UE via a wireless communication system, according to an embodiment of this disclosure.

[0025] Figure 3 This is a signal flow diagram illustrating the configuration and control of the data transmission path between the UAS UE and the UAV controller UE via a wireless communication system according to an embodiment of this disclosure.

[0026] Figure 4 This is a signal flow diagram illustrating the configuration and control of the data transmission path between the UAS UE and the UAV controller UE via a wireless communication system according to an embodiment of this disclosure.

[0027] Figure 5 This is a diagram illustrating a schematic configuration of a UAS UE (UAV or UAV controller) according to an embodiment of the present disclosure;

[0028] Figure 6 This is a diagram illustrating a schematic configuration of network entities according to embodiments of the present disclosure; and

[0029] Figure 7 This is a diagram illustrating a schematic configuration of UAS Service Management (UTM) according to an embodiment of this disclosure.

[0030] In all the accompanying drawings, it should be noted that the same reference numerals are used to describe the same or similar elements, features and structures. Detailed Implementation

[0031] The following description, with reference to the accompanying drawings, is provided to aid in a full understanding of the various embodiments of the invention as defined by the claims and their equivalents. It includes various specific details to aid understanding, but these are merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of this disclosure. Furthermore, for clarity and brevity, descriptions of well-known functions and structures may be omitted.

[0032] The terms and words used in the following description and claims are not limited to their bibliographical meaning, but are used solely by the inventors to enable a clear and consistent understanding of this disclosure. Therefore, it will be clear to those skilled in the art that the following description, which provides various embodiments of this disclosure, is for illustrative purposes only and is not intended to limit the disclosure as defined by the appended claims and their equivalents.

[0033] It should be understood that the singular forms “a,” “an,” and “the” include plural indicators unless the context clearly specifies otherwise. Thus, for example, referring to “the surface of a component” includes referring to one or more such surfaces.

[0034] For the same reason, in the accompanying drawings, the dimensions and relative dimensions of some components may be exaggerated, omitted, or simplified. Furthermore, the dimensions of each component do not perfectly reflect its actual size. In the accompanying drawings, the same reference numerals are used for the same or corresponding elements in various figures.

[0035] The aspects and features of this disclosure, as well as methods for implementing these aspects and features, will become apparent from the embodiments described below with reference to the accompanying drawings. However, the invention is not limited to the embodiments disclosed below, and may be implemented in various forms. These embodiments are merely specific details provided to accomplish this disclosure and to fully inform those skilled in the art to which this disclosure pertains, and this disclosure is limited only by the scope of the appended claims. Throughout the description of this disclosure, the same reference numerals are used for the same elements in the various figures.

[0036] In this context, it will be understood that each block of a flowchart, and combinations of blocks within a flowchart, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more flowchart blocks. These computer program instructions can also be stored in a computer-usable or computer-readable storage medium that can direct the computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-usable or computer-readable storage medium produce an article of writing comprising means for implementing the functions specified in the flowchart blocks or blocks. The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operations to be performed on the computer or other programmable data processing apparatus, thereby producing a computer-implemented process, such that the instructions, which execute on the computer or other programmable data processing apparatus, provide operations for implementing the functions specified in one or more flowchart blocks.

[0037] Furthermore, each block of a flowchart can represent a module, segment, or section of code, which includes one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions recorded in a block can occur sequentially. For example, two blocks shown consecutively may actually execute substantially simultaneously, or these blocks may sometimes execute in reverse order, depending on the functions involved.

[0038] In this context, the term "unit" as used in embodiments of the invention refers to (but is not limited to) a software or hardware component that performs certain tasks, such as a field-programmable gate array (FPGA) or an application-specific integrated circuit (ASIC). However, "unit" is not intended to be limited to software or hardware. The term "unit" can advantageously be configured to reside on addressable storage media and configured to execute on one or more processors. Thus, by way of example, "unit" can include components such as software components, object-oriented software components, class components and task components, processes, functions, attributes, procedures, subroutines, program code segments, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. The functionality provided in components and "units" can be combined into fewer components and "units," or further separated into additional components and "units." Furthermore, components and "units" can be implemented to operate one or more central processing units (CPUs) in a device or secure multimedia card. Additionally, in embodiments of this disclosure, "unit" can include one or more processors.

[0039] In the following description of this disclosure, descriptions of known functions or configurations will be omitted if it is determined that such known functions or configurations obscure the subject matter of this disclosure. Embodiments of this disclosure will be described below with reference to the accompanying drawings.

[0040] In the following description, for ease of explanation, terms used to identify connected nodes, to call network entities, to call messages, to call interfaces between network entities, and to call various identifying information are exemplified. Therefore, this disclosure is not limited to the terms described later, but other terms used to refer to objects having the same technical meaning may be used.

[0041] In the following text, for ease of explanation, the terms and names defined in the LTE and New Radio (NR) standards are used, which are the most recent standards defined in the 3rd Generation Partnership Project (3GPP) group of current existing communication standards. However, this disclosure is not limited to the terms and names, but can be applied equivalently to systems conforming to other standards. In particular, this disclosure is applicable to 3GPP NR (the fifth-generation mobile communication standard). Furthermore, embodiments of this disclosure can even be applied to other communication systems with similar technical backgrounds or channel types. Moreover, embodiments of this disclosure can even be applied to other communication systems with modifications that, in the judgment of a person skilled in the art, will not significantly exceed the scope of this disclosure.

[0042] According to various embodiments of this disclosure, the UTM can prevent unauthorized flight by identifying whether the actual communication target is a user UE permitted by UAS communication during the process of configuring communication paths using the wireless communication system for the UAV UE and UAV controller UE, and by controlling communication with user UEs not permitted by UAS communication.

[0043] Figure 1 The overall structure of a system for providing a UAS according to an embodiment of the present disclosure is shown.

[0044] Reference Figure 1 A drone system (UA system) for providing unmanned aerial vehicle (UAS) services may include at least one of a drone (UAV) 122 and a UAV controller 121 using a wireless communication system (or mobile communication system), a radio access network (RAN) 130 and a core network (CN) 140, and a UAS service management (UTM) 110 for providing additional information to the UAS UE (UAV 122 and / or UAV controller 121) and controlling the operation of the UAS UE. Furthermore, the UAS may also include controls such as providing government flight control information. Of course, the components of a UA system are not limited to those listed above, and a system for providing UAS services may include more or fewer components. Figure 1 The constituent elements shown are components of the constituent elements. In addition, at least one of the constituent elements described above can provide the operation or function of another constituent element.

[0045] According to embodiments of this disclosure, UAV 122 (hereinafter described as UAV, UAV UE, or UAV device) may include various aerial devices, such as flying objects, vehicles, and aircraft, which can provide UAS. For example, UAV 122 may include, but is not limited to, aircraft, helicopters, drones, and robots, and may include various types of aerial devices that can provide services in the flight area, regardless of their shape or structure.

[0046] According to embodiments of this disclosure, UAV controller 121 (hereinafter described as a UAV controller, UAV controller UE, or UAV controller device) can control at least one UAV. For example, UAV controller 121 can control the position, flight, path, and speed of the UAV. Of course, the operation of UAV controller 121 is not limited to the examples described above.

[0047] According to embodiments of this disclosure, RAN 130 and CN 140 may be components included in a wireless communication network. RAN 130 may be configured to handle wireless connectivity with a wireless UE (e.g., a UAV or UAV controller). For example, RAN 130 may include a base station. The base station may include an LTE base station (e.g., an eNodeB) or an NR base station (gNodeB).

[0048] In addition, CN 140 can process data received from radio UEs via RAN 130, including network elements that provide connectivity to other networks, and includes 5G core network and evolved packet system (EPS).

[0049] According to embodiments of this disclosure, including Figure 1 The components of a UAS service system can be network functions (NFs). Furthermore, a network function can be referred to as a network entity. Of course, the components are not limited to the examples above, and can be separate configurations that are not network functions.

[0050] Reference Figure 1 UTM 110 can be a UAS UE, that is, it can be a configuration used to track and manage the registration and movement of UAV 122 and UAV controller 121. UTM 110 can periodically or by specifying specific conditions from the UAS UE and the mobile communication network to collect information about changes in the location of the UAS UE, and if the UE separates from the flight-allowed area, UTM 110 can perform necessary actions to control the UAV UE to stop flying or return to the flight-allowed area, taking into account the flight control information specified in the regulations.

[0051] Furthermore, according to embodiments of this disclosure, the UTM 110 can transmit information related to the flight restricted area of ​​the UAS UE in advance or during service to the UAS UE and the mobile communication system (e.g., RAN and / or CN) through the UE registration process or through a separate message.

[0052] According to embodiments of this disclosure, UAS control messages can be sent or received between the UAS UE and UTM 110 via RAN 130 and CN 140 of a wireless communication system. Specifically, a data session can be established between UAV 122 and UTM 110, and through the established data session, UAV 122 and UTM 110 can send or receive UAS control messages. Alternatively, a data session can be established between UAV controller 121 and UTM 110, and through the established data session, UAV controller 121 and UTM 110 can send or receive UAS control messages.

[0053] Figure 2This is a signal flow diagram in a wireless communication system where a data transmission path between a UAS UE and a UAV controller UE is identified via a UTM, and according to embodiments of this disclosure, the transmission path is controlled to transmit data relative to a specified pair.

[0054] refer to Figure 2 It shows a signal flow diagram in the case of configuring and controlling the data transmission path between the UAS UE and the UAV controller UE through a wireless communication system.

[0055] Figure 2 The example shows that the UAV UE (hereinafter referred to as UAV1) 210 is started for use with Figure 3 This describes the operation when the UAV controller UE (hereinafter referred to as UAV-C) 220 or 320 initiates the UAS communication establishment process. However, according to various embodiments of this disclosure, even if UAV-C 220 begins the UAS communication establishment process with UAV1 210, it can still perform operations related to... Figure 2 The operation shown is similar to the one described above. If UAV-C 220 initiates the establishment process for UAS communication with UAV1 210, then... Figure 2 The process performed by UAV1 210 shown, namely the operation for UAS communication with UAV-C 210, can be performed by UAV-C 220.

[0056] The method according to embodiments of the present invention may include Figure 2 At least one of the operations described herein. Figure 2 All the operations shown are not necessary configurations and are used to identify whether communication between UAV1 210 and UAV-C 220 is allowed and to control the transmission path so that the bottom configuration relative to the specified pair of transmitted data can be configured as necessary operations.

[0057] Reference Figure 2 During operation S201, UAV1 210 can utilize the Access and Mobility Function (AMF) 230 of the wireless communication system to perform an initial access procedure in order to initiate registration at UAS at UTM 250. During the initial access procedure, UAV1 210 can send a registration request message to the AMF 230 of the 5G network, and if registration has been successfully performed, UAV1 210 can receive a registration response message from the AMF 230.

[0058] During operation S202, UAV1 210 can execute a Protocol Data Unit (PDU) session establishment procedure to request a data session from the Session Management Function (SMF) 240 of the 5G network for establishing a communication path with UTM 250. In this case, during the execution of the PDU session establishment procedure according to the contract and settings between the UAS service provider and the mobile communication service provider, UAV1 210 can be enabled to execute the authentication process used by the UAS of UATM 250, and depending on the implementation and settings, the authentication process can be omitted. Figure 2 In this context, this authentication is indicated by the dashed line on the right side of S202, representing the operation between SMF 240 and UTM 250.

[0059] In operation S203, UAV1 210 can perform the UAS registration process at UTM250 via the transmission path of the data session set in operation S202. The UAS registration process can be performed between the UAS application installed on UAV1 210 and UTM250, and UAV1 210 can provide the UE identifier registered in its own UAS, and can perform an authentication process as needed (which can be omitted if it has already been performed in operation S202), and can receive the UAV ID assigned to UAV1 210 and the registration result from UTM250 if registration has been successfully completed. The UAV ID is used as an identifier to identify UAV1 210 during future data session establishment operations with UAV-C220, and is assigned by UTM250. According to the implementation, in operation S202, the 5G network (NW) can pre-select and transmit the UAV ID to UTM250 during the process. The UAV ID can be used as a globally unique value and (or include) a 5G NW ID to uniquely identify the UAV1 210.

[0060] In operation S204, UTM 250 can successfully register the Universal Public Subscriber Identifier (GPSI) information of UAV1 210, which can be identified in the 5G network, and the UAV ID information assigned to UAV1 210 to AMF 230 via the 5G network (e.g., SMF240). Furthermore, UTM 250 can transmit a list (e.g., including at least one UAS controller) of UAS UEs (associated UAV IDs) permitted to communicate with UAV1 210. This list may also include QoS profile information that can be used between UAV1 210 and each UAS UE. Depending on the situation, SMF 240 can store the above information and transmit it to AMF 230.

[0061] In operation S205, UAV1 210 can select a UAV controller (e.g., UAV-C 220) from the communicable targets based on a request from a user or application, and can begin the path establishment process for communication.

[0062] During operation S206, UAV1 210 can trigger a session establishment process to the 5G network for UAS communication with UAV-C 220.

[0063] During operation S207, UAV1 210 can send a signaling message to request PDU session establishment, including a UAV ID (target UAV ID) that is the opposite of that of SMF 240 in the 5G network. This message can also include the data network name (DNN) set for the UAS and its own UAV ID (source UAV ID). The PDU session establishment request message can be transmitted from AMF 230 in the 5G network to SMF 240.

[0064] In operation S208, the SMF 240, having received the PDU session establishment request message, can identify whether the received message corresponds to the request information of UAV1 210. To obtain the routing information of the corresponding UAV (UAV-C 220), the SMF 240 can send a UE information retrieval (retrieve UE information) message to the UTM 250, including the UAV ID (target UAV ID) of UAV-C 220. Routing information is UE information used for performing UAS communication between UEs using the 5G network and is defined by the 5G network. For example, routing information may include the address of the corresponding UE. The "retrieve UE information" message may additionally include a source routing ID (RID) and a source UAV ID, which is an example of routing information assigned by the SMF 240 for the requested UAV1 210, thus enabling the UTM 250 to update and store the routing information of UAV1 210.

[0065] In operation S209, UTM 250 can extract routing information (target RID) corresponding to the target UAV ID requested by the 5G network, stored for UAV-C 220, and send the routing information to SMF240 via a UE information notification (notify UE information) message. For example, this embodiment relates to operation where UTM 250 pre-stores the routing information of UAV-C 220. The notify UE information message may further include at least one of the source UAV ID, the target UAV ID, and the source RID.

[0066] In operation S210, SMF 240 can identify the RID information (target RID) set in the target UAV ID, and use the corresponding information to set the packet filter rules for the newly set PDU session, so that communication only occurs between UAV1 210 and UAV-C 220, which have already requested a session, and set the PDU session with the RID of UAV1 210 (source RID) as the source address and the RID of UAV-C 220 (target RID) as the target address. Through this operation, according to embodiments of this disclosure, security can be maintained between UE pairs performing UAS communication using the 5G communication system. Furthermore, a PDU session setting response message including the corresponding setting information can be sent to UAV1 210.

[0067] Figure 3 This is a signal flow diagram illustrating the configuration and control of the data transmission path between the UAS UE and the UAV controller UE via a wireless communication system. Furthermore, according to another embodiment of this disclosure, the transmission path is controlled to transmit data relative to a specified pair, and the operation of the proposed method is explained without configuring routing information for the other UE.

[0068] Reference Figure 3 This indicates the operation performed when the UAV UE (hereinafter, UAV1) 310 begins the configuration process for UAS communication with the UAV controller UE (hereinafter, UAV-C) 320. However, according to various embodiments of the present invention, even if the UAV-C 320 begins the configuration process for UAS communication with the UAV1 310, it can still perform the operation with... Figure 3 The operation shown is similar to the one described above. If the UAV-C 320 begins the configuration process for UAS communication with the UAV1 310, the UAV-C 320 can perform... Figure 3 The UAV1 310 shown performs UAS communication with the UAV-C 320.

[0069] The method according to the embodiments of this disclosure may include Figure 3 At least one of the operations shown. Figure 3 All the operations shown are not necessary configurations and are used to identify whether communication between UAV1 310 and UAV-C 320 is allowed and to control the transmission path so that the bottom configuration relative to the specified pair of transmitted data can be configured as necessary operations.

[0070] exist Figure 3 The process from S301 to S307 in the example is equivalent to... Figure 2 Operations S201 to S207 will be explained in the following case. Therefore, repeated explanations of the same operations will be omitted.

[0071] Reference Figure 3 During operation S308, the UTM 350 can receive a UE information retrieval message from the SMF 340 in the 5G network. In this case, the UTM 350 is in a state where it does not store the routing information (target RID) for the UAV-C 320 requested from the SMF 340. The UTM 350 and... Figure 2 The difference between the example UTM and the example UTM is that it does not store the routing information (destination RID) of the UAV-C 320 that has been requested from the SMF 340.

[0072] In operation S309, UTM 350 can transmit a UAS application signaling message to request the continuation of data session establishment, in order to register routing information with UAV-C 320, which has not been configured with routing information. In this case, so that UAV-C 320 can know about UAV1 310, which has sent a corresponding request, UTM 350 can include the UAV ID value of UAV1 310 in the message to be transmitted.

[0073] During operation S310, UAV-C 320 can perform the same PDU session establishment process as operations S305 to S308, and during this process, the 5G network's SMF 340 can allocate routing information corresponding to the PDU session requested by UAV-C 320 and transmit the routing information to UTM 350.

[0074] During operation S311, UTM 350 can transmit a notification UE information message, including routing information (destination RID) of UAV-C 320, to SMF 340. The notification UE information message may also include at least one of source UAV ID, destination UAV ID, and source RID.

[0075] In operation S312, SMF 340 can identify the RID information (target RID) configured in the target UAV ID, and can use the corresponding information to configure the packet filter rules for the newly configured PDU session, so that communication only occurs between UAV1 310 and UAV-C 320, which have already requested a session, and set the PDU session with the RID of UAV1 310 (source RID) as the source address and the RID of UAV-C 320 (target RID) as the target address. Through this operation, according to embodiments of this disclosure, security can be maintained between UE pairs performing UAS communication using the 5G communication system. Furthermore, a PDU session establishment response message including the corresponding configuration information can be sent to UAV1 310.

[0076] Figure 4This is a signal flow diagram illustrating the configuration and control of the data transmission path between the UAS UE and the UAV controller UE via a wireless communication system. Furthermore, according to yet another embodiment of this disclosure, the operation of the proposed method is interpreted, in which the routing information of the other UE is configured, while controlling the transmission path to transmit data relative to a specified pair and, in the case of receiving and storing update information from the UTM in advance on the 5G network.

[0077] Reference Figure 4 This indicates the operation performed when the UAV UE (hereinafter, UAV1) 410 begins the configuration process for UAS communication with the UAV controller UE (hereinafter, UAV-C) 420. However, according to various embodiments of the present invention, even if the UAV-C 420 begins the configuration process for UAS communication with the UAV1 410, it can still perform the operation with... Figure 4 The operation shown is similar to the one described above. If the UAV-C 420 initiates the configuration process for UAS communication with the UAV1 410, then... Figure 4 The process performed by UAV1 410 shown, namely the operation for UAS communication with UAV-C 420, can be performed by UAV-C 420.

[0078] The method according to the embodiments of this disclosure may include Figure 4 At least one of the operations shown. Figure 4 All the operations shown are not necessary configurations and are used to identify whether communication between UAV1 410 and UAV-C 420 is allowed and to control the transmission path so that the bottom configuration relative to the specified pair of transmitted data can be configured as necessary operations.

[0079] Figure 4 The process of operations S401 to S404 in the middle and Figure 2 and 3 The corresponding procedures are performed in the same way. Therefore, repeated explanations of the same operations will be omitted.

[0080] Reference Figure 4 During operation S405, the UAV-C 420, acting as the counterpart UE, can perform the UAS registration process with the UTM 450.

[0081] In operation S406, UAV-C 420 can pre-execute a data session establishment process for future UAS communication with UAV UE 410. According to the implementation, the PDU session establishment request can be made without specifying the other UE (or using a pseudo value), or the PDU session establishment can be performed during communication with another UAV UE.

[0082] During S407 operation, after the PDU session is successfully established, the UTM 450 can receive and store the routing information of the UAV-C 420 from the SMF 440 or AMF 430 of the 5G network. Figure 4 The example illustrates the scenario of receiving routing information from a UAV-C 420 at an SMF 440. In this case, while receiving and storing the routing information from the UAV-C 420, the UTM 450 can store the routing information of the UAV-C 420 associated with the UAV ID.

[0083] During operation S408, the UTM 450 can transmit updated routing information for the corresponding UAV-C 420 to the SMF 440 of the 5G network to which the UE belongs, regarding all UEs permitted to communicate with the corresponding UAV-C 420. The SMF 440 of the 5G network, having received the updated routing information, can store the updated routing information for the UAV-C 420 associated with the corresponding UAV UE specified by the UTM 450. This process can be performed whenever the routing information for the UAV-C 420 is updated via UAV-C 420 mobility updates.

[0084] By operating steps S409 to S411, UAV1 410 can perform the data session establishment process for UAS communication with UAV-C420. This is consistent with the above... Figure 2 and 3 The operations are the same. For example, Figure 4 Operation S409 corresponds to Figure 2 Operation S205, Figure 4 Operation S410 corresponds to Figure 2 Operation S206, and Figure 4 Operation S411 corresponds to Figure 2 Operation S207.

[0085] In operation S412, the SMF 440, having received the PDU session establishment request message from UAV1 410, can identify whether the routing information of UAV-C 420 requested by UAV1 410, included in the PDU session establishment request message, has the correct value by utilizing the routing information (destination RID) of UAV-C 420 previously received from UTM 450; by rejecting an incorrect PDU session establishment request or replacing the routing information with the correct value, a PDU session (i.e., a PDU session with the RID (source RID) of UAV1 410 as the source address and the RID (destination RID) of UAV-C 420 as the destination address) is set up; and a PDU session establishment response message including the set packet filter rules is sent to UAV1 410. Through this operation, according to embodiments of this disclosure, security between UE pairs performing UAS communication using a 5G communication system can be maintained.

[0086] In operation S413, SMF 440 can transmit the routing information (RID) assigned to UAV1 410 to the UTM 450 associated with the UAV ID (AMF 430 may transmit the routing information, depending on the situation). In operation S413, UTM 450 can update the routing information stored about the corresponding UAV1 410 based on the information received from SMF 440.

[0087] In operation S414, UTM 450 can update the packet filter rules of the corresponding PDU session in the 5G network by transmitting updated routing information of UAV1410 to SMF 440 of the 5G network to which UAV-C 420 belongs, and control UAS communication to be performed only between specified UE pairs.

[0088] Figure 5 This is a diagram illustrating a schematic configuration of a UAS UE (UAV or UAV controller) according to an embodiment of the present invention.

[0089] Reference Figure 5 The UAS UE may include at least one of a controller 510, a transceiver 520, and a memory 530.

[0090] According to various embodiments of this disclosure, transceiver 520 can transmit signals, information, messages, and data to or receive signals, information, messages, and data from a network device. In this case, transceiver 520 may include an RF module for transmitting and receiving signals, information, messages, and data via RAN 130.

[0091] The controller 510 can control the operation according to various embodiments of the present disclosure. For example, when the UAS UE is a UE that initiates the establishment process for UAS communication, the controller 510 can control... Figures 2 to 4 The operation of UAV1 is shown. Conversely, when the UAS UE is the counterpart UE in the configuration process for UAS communication, the controller 510 can control... Figures 2 to 4 The operation of the UAV-C is shown. Furthermore, when the UAV-C initiates the configuration process for UAS communication, the controller 510 can control the operation of the UAV-C as described above. Figures 2 to 4 The operation corresponding to UAV1 described.

[0092] According to various embodiments of this disclosure, in order to control communication between the UAV UE and the UAV controller UE, the controller 510 can control registration with the wireless communication system, configure a communication path at the UTM for controlling message sending / receiving, and perform registration at the UTM for using UAS services. Under the assumption of UTM registration, the controller 510 can configure a data transmission path through the wireless communication system for data transmission / reception with the corresponding UE (e.g., PDU session establishment request), and according to various embodiments of this disclosure, during the data transmission path setup process, the wireless communication system can identify whether to allow the UE to communicate with the corresponding UE via the UTM request. Routing information of the peer UE is obtained, and communication parameters are set such that data communication is only performed for the specified peer UE.

[0093] For example, controller 510 can determine to perform UAS communication with the peer UE at the application level, control the sending of a PDU session establishment request message to the network including the peer UE's UAS service level identification information (target UAV ID), and control the receiving of a PDU session establishment response message for the PDU session set based on the network level identification information (target RID) corresponding to the peer UE's UAS service level identification information and the UE's network level identification information (source RID). Within the PDU session, packet filtering rules can be configured so that communication between the UE and the peer UE is only possible based on the UE's network level identification information and the peer UE's network level identification information.

[0094] According to various embodiments of this disclosure, reference is made to Figures 2 to 4 The network-level identification information of the other party's UE can be represented as being pre-stored in the Unmanned Service Management (UTM). When the UTM receives the UAS service-level identification information of the other party's UE transmitted from the network, it can obtain it by requesting the other party's UE to configure a PDU session, or it can be pre-stored in the network.

[0095] The memory 530 stores information generated by the UAS UE and information obtained from the network under the control of the controller 510.

[0096] Figure 6 This is a diagram illustrating a schematic configuration of network entities according to an embodiment of the present invention.

[0097] refer to Figure 6 The network entity (or network device) may include at least one of SMF and AMF. The network entity may include at least one of controller 610, transceiver 620 and memory 630.

[0098] According to various embodiments of this disclosure, transceiver 620 can send or receive signals, information, and data to or from the UAS UE and UTM.

[0099] The controller 610 can control according to various embodiments of the present disclosure. Figures 2 to 4 The operation of the network entities shown.

[0100] For example, controller 610 can control the reception of a UE's PDU session establishment request message, including the other UE's UAS service level identification information (target UAV ID), obtaining the other UE's network level identification information (target RID) based on the other UE's UAS service level identification information, and sending a PDU session establishment response message for the PDU session set based on the other UE's network level identification information and the UE's network level identification information (source RID). Within the PDU session, packet filtering rules can be configured to ensure that communication between the UE and the other UE is only possible based on the UE's network level identification information and the other UE's network level identification information.

[0101] According to various embodiments of this disclosure, reference is made to Figures 2 to 4 When obtaining the network-level identification information of the other party's UE, the controller 610 may receive a pre-stored value from the UTM, receive the value obtained by the UTM to request the other party's UE to set up a PDU session based on the other party's UE's UAS service-level identification information, or identify the value pre-stored in the network device.

[0102] The memory 630 stores information obtained by the UAS UE or UTM and information generated by the network under the control of the controller 610.

[0103] Figure 7 This is a diagram illustrating a schematic configuration of a UTM according to an embodiment of the present disclosure.

[0104] Reference Figure 7 The UTM may include at least one of a controller 710, a transceiver 720, and a memory 730.

[0105] According to various embodiments of this disclosure, transceiver 720 can send or receive signals, information and data over a network.

[0106] The controller 710 can control according to various embodiments of the present disclosure. Figures 2 to 4 The operation of UTM is shown in the figure.

[0107] According to one embodiment of the present invention, the controller 710 can identify whether communication with a peer UE requested by the UE is permitted during the process of setting up a data transmission path based on a PDU session establishment request from the UE. For example, the controller 710 can provide the network with network level identification information (target RID) corresponding to the peer UE's UAS service level identification information (target UAV ID).

[0108] According to various embodiments of this disclosure, reference is made to Figures 2 to 4 The network-level identification information of the other party UE can be a value pre-stored in the UTM, a value obtained by the UTM from the other party UE based on the other party UE's UAS service-level identification information, or a value pre-provided by the UTM to the network device (based on the PDU session pre-executed by the other party UE).

[0109] The memory 730 stores information obtained by the UAS UE or the network and information generated by the UTM under the control of the controller 710.

[0110] It will be apparent to those skilled in the art to which this disclosure pertains that other modifications based on the technical concepts of this disclosure can be implemented. Furthermore, the various embodiments can be combined as needed. For example, portions of one embodiment and another embodiment of this disclosure can be combined with each other to operate a base station and a UE. Moreover, the embodiments of this disclosure are applicable to other communication systems, and other modifications based on the technical concepts of the embodiments will be possible.

[0111] Although this disclosure has been shown and described with reference to various embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

[0112] Industrial applicability

[0113] This disclosure can be used for UAS communication.

Claims

1. A method performed by a first entity executing a session management function (SMF), the first entity supporting unmanned air service (UAS) communication in a mobile communication system, the method comprising: The UAV receives a Protocol Data Unit (PDU) session establishment request message, which includes: a dedicated data network name (DNN) for the UAS, a first identifier (ID) for the UAV, and a second ID for the UAV controller (UAV-C). Based on the PDU session establishment request message, the addressing information of the UAV-C is obtained from the second entity associated with the UAS service management UTM; Send a PDU session response message to the UAV; and A PDU session is established between the UAV and the UAV-C based on the addressing information of the UAV-C.

2. The method according to claim 1, wherein, The first ID information of the UAV is assigned by the second entity associated with the UTM.

3. A method performed by an unmanned aerial vehicle (UAV) supporting unmanned aerial service (UAS) communications in a mobile communication system, the method comprising: A Protocol Data Unit (PDU) session establishment request message is sent to the first entity performing the Session Management Function (SMF). The PDU session establishment request message includes: a dedicated Data Network Name (DNN) for the UAS, a first identifier (ID) for the UAV, and a second ID for the UAV controller (UAV-C). Receive a PDU session response message from the first entity executing the SMF. The PDU session between the UAV and the UAV-C is established by the first entity executing the SMF based on the addressing information of the UAV-C. The addressing information of the UAV-C is sent from a second entity associated with the UAS Service Management UTM to the first entity executing the SMF.

4. The method according to claim 3, wherein, The first ID information of the UAV is assigned by the second entity associated with the UTM.

5. The method according to claim 3, further comprising: Before sending the PDU session establishment request message, authentication is performed with the second entity associated with the UTM.

6. A first entity that performs a session management function (SMF), the first entity supporting unmanned air service (UAS) communication in a mobile communication system, the first entity comprising: transceiver; and The controller is configured as follows: The UAV receives a Protocol Data Unit (PDU) session establishment request message, which includes: a dedicated data network name (DNN) for the UAS, a first identifier (ID) for the UAV, and a second ID for the UAV controller (UAV-C). Based on the PDU session establishment request message, the addressing information of the UAV-C is obtained from the second entity associated with the UAS service management UTM; Send a PDU session response message to the UAV; and A PDU session is established between the UAV and the UAV-C based on the addressing information.

7. The first entity according to claim 6, wherein, The first ID information of the UAV is assigned by the second entity associated with the UTM.

8. A UAV that supports unmanned aerial service (UAS) communication in a mobile communication system, the UAV comprising: transceiver; and The controller is configured as follows: A Protocol Data Unit (PDU) session establishment request message is sent to the first entity performing the Session Management Function (SMF). The PDU session establishment request message includes: a dedicated Data Network Name (DNN) for the UAS, a first identifier (ID) for the UAV, and a second ID for the UAV controller (UAV-C). Receive a PDU session response message from the first entity executing the SMF. The PDU session between the UAV and the UAV-C is established by the first entity executing the SMF based on the addressing information of the UAV-C. The addressing information of the UAV-C is sent from a second entity associated with the UAS Service Management UTM to the first entity executing the SMF.

9. The UAV according to claim 8, in, The first ID information of the UAV is assigned by the second entity associated with the UTM.

10. The UAV according to claim 8, wherein, The controller is further configured to: Before sending the PDU session establishment request message, authentication is performed with the second entity associated with the UTM.

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