Method and apparatus for reporting flight path of terminal in mobile communication system

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Disclosed is a UE capable of efficiently reporting a UE flight path in a 5G or 6G communication system for supporting a higher data transmission rate. The UE may include a transceiver; and at least one processor configured to receive, by the transceiver, a first message for configuring a flight path update notification from a base station, identify that a flight path has been updated, and send, by the transceiver, a second message to the base station based on the first message and the identification, the second message includes a flight path update indication for indicating that the flight path has been updated.

Description

Technical Field

[0001] The present disclosure relates to the operation of a terminal and a base station in a mobile communication system. In particular, the present disclosure relates to a method and an apparatus for a terminal to efficiently report its flight path. Background Art

[0002] 5G mobile communication technology defines a wide frequency band, making it possible to realize high transmission rates and new services, which can be realized not only in the "below 6 GHz" frequency band such as 3.5 GHz, but also in the "above 6 GHz" frequency band called millimeter wave including 28 GHz and 39 GHz. In addition, in order to achieve a transmission rate 50 times faster than 5G mobile communication technology and an ultra-low latency that is only one-tenth of 5G mobile communication technology, the implementation of 6G mobile communication technology in the terahertz frequency band (for example, the 95 GHz to 3 THz frequency band) (called a super 5G system) has been considered.

[0003] In the early stages of 5G mobile communications technology development, in order to support services and meet performance requirements associated with enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine type communications (mMTC), standardization work has been ongoing on: beamforming and massive MIMO for mitigating radio wave path loss in millimeter waves and increasing radio wave transmission distance; parameter sets for efficient use of millimeter wave resources and dynamic operation of time slot formats (e.g., operating multiple subcarrier spacings); initial access technology for supporting multi-beam transmission and broadband; definition and operation of BWP (bandwidth part); new channel coding methods such as LDPC (low-density parity check) codes for large amounts of data transmission and polarization codes for highly reliable transmission of control information; L2 preprocessing; and network slicing for providing dedicated networks for specific services.

[0004] Currently, discussions are underway on improvements and performance enhancements to initial 5G mobile communications technologies in view of the services they are to support, and the following technologies have been standardized at the physical layer: V2X (vehicle-to-everything), which aims to assist autonomous vehicles in making driving decisions and improve user convenience based on information transmitted by vehicles about their own location and status; NR-U (New Radio-Unlicensed), which aims to achieve system operation that complies with various regulatory requirements for unlicensed bands; NR UE energy saving; non-terrestrial networks (NTNs) in which UEs communicate directly with satellites to provide coverage in areas where communication with terrestrial networks is not possible; and positioning technologies.

[0005] In addition, in terms of air interface architecture / protocol, the following technologies are also being standardized: Industrial Internet of Things (IIoT), which supports new services through interoperability and integration with other industries; IAB (Integrated Access and Backhaul), which provides nodes for network service area expansion by supporting wireless backhaul links and access links in an integrated manner; Mobility enhancement, including conditional switching and DAPS (Dual Active Protocol Stack) switching; and two-step random access (NR's 2-step RACH) for simplifying the random access process. In terms of system architecture / services, the following are also being standardized: 5G baseline architecture (e.g., service-based architecture or service-based interface) for combining network function virtualization (NFV) technology and software-defined network (SDN) technology; and mobile edge computing (MEC) for receiving services based on UE location.

[0006] With the commercialization of 5G mobile communication systems, an exponentially growing number of connected devices will be connected to the communication network, so it is expected that 5G mobile communication systems will need to enhance functions and performance, and connected devices will need to achieve integrated operations. To this end, new research is planned related to: extended reality (XR) for effective support of AR (augmented reality), VR (virtual reality), MR (mixed reality), etc.; 5G performance improvement and complexity reduction by utilizing artificial intelligence (AI) and machine learning (ML); AI service support; Metaverse service support; and drone communication.

[0007] In addition, this development of 5G mobile communication systems will lay the foundation for the development of not only new waveforms required for terahertz band coverage of 6G mobile communication technology, multi-antenna transmission technologies such as full-dimensional MIMO (FD-MIMO), array antennas and massive antennas, metamaterial-based lenses and antennas for improving terahertz band signal coverage, high-dimensional spatial multiplexing technology using OAM (orbital angular momentum), and RIS (reconfigurable smart surface), but also full-duplex technology aimed at improving the frequency efficiency of 6G mobile communication technology and improving system networks, AI-based communication technology that uses satellites and AI (artificial intelligence) to achieve system optimization and internalize end-to-end AI support functions from the design stage, and next-generation distributed computing technology that implements services with complexity that exceeds the limits of UE operating capabilities by utilizing ultra-high-performance communication and computing resources.

[0008] At the same time, a method is needed to efficiently report terminal flight paths. Summary of the invention

[0009] Technical issues

[0010] A method is needed for a terminal to efficiently report its flight path in a mobile communication system.

[0011] Technical Solution

[0012] According to an embodiment, a terminal in a wireless communication system is provided, the terminal including a transceiver and at least one processor, the at least one processor being configured to: receive a first message for configuring a flight path update notification from a base station via the transceiver; identify that the flight path has been updated; and send a second message to the base station via the transceiver based on the first message and the identification, the second message including a flight path update indication for indicating that the flight path has been updated.

[0013] According to an embodiment, a base station in a wireless communication system is provided, the base station comprising a transceiver and at least one processor, the at least one processor being configured to: send a first message for configuring a flight path update notification to a terminal via the transceiver; and when the flight path is identified as having been updated, receive a second message from the terminal via the transceiver, the second message comprising a flight path update indication for indicating that the flight path has been updated.

[0014] According to an embodiment, a method performed by a terminal in a wireless communication system is provided, the method comprising: receiving a first message for configuring a flight path update notification from a base station; identifying that the flight path has been updated; and based on the first message and the identification, sending a second message to the base station, the second message comprising a flight path update indication for indicating that the flight path has been updated.

[0015] According to an embodiment, a method performed by a base station in a wireless communication system is provided, the method comprising: sending a first message for configuring a flight path update notification to a terminal; and when the flight path is identified as having been updated, receiving a second message from the terminal, the second message comprising a flight path update indication for indicating that the flight path has been updated.

[0016] Advantageous Effects of the Invention

[0017] According to the embodiments of the present disclosure, a terminal can efficiently report its own flight path. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other aspects, features and effects of certain embodiments of the present disclosure will become more apparent from the following description in conjunction with the accompanying drawings, in which:

[0019] Figure 1 shows the structure of a next generation mobile communication system according to an embodiment;

[0020] Figure 2 A function of reporting a moving path of an airborne UE in a next generation mobile communication system according to an embodiment is shown;

[0021] Figure 3A function of updating a flight path of an airborne UE in a next generation mobile communication system according to an embodiment is shown;

[0022] Figure 4 A flowchart showing a process in which an airborne UE reports to a gNB whether to update a flight path and the gNB requests an updated path in a first-generation mobile communication system according to an embodiment;

[0023] Figure 5 A flowchart showing a process of reporting an updated flight path of an airborne UE to a gNB in ​​a next generation mobile communication system according to an embodiment;

[0024] Figure 6 A flowchart showing a process of periodically reporting an updated flight path of an airborne UE to a gNB in ​​a next generation mobile communication system according to an embodiment;

[0025] Figure 7 A structural block diagram of a UE according to an embodiment is shown; and

[0026] Figure 8 A structural block diagram of a gNB according to an embodiment is shown. DETAILED DESCRIPTION

[0027] The working principle of the present disclosure will be described in detail below in conjunction with the accompanying drawings. In the following description of the present disclosure, when it is determined that a detailed description of a known function or configuration contained herein may cause the subject matter of the present disclosure to be unnecessarily obscure, the detailed description will be omitted. The terms to be described below are defined in consideration of the functions in the present disclosure and may vary depending on the user, user intent or custom. Therefore, the definition of the term should be determined based on the content of the entire specification.

[0028] In the following description, for the convenience of description, terms used to identify access nodes, terms used to refer to network entities, terms used to refer to messages, terms used to refer to interfaces between network entities, terms used to refer to various identification information, etc. are schematically used. Therefore, the present disclosure is not limited to the terms used below, and other terms referring to subjects with equivalent technical meanings may also be used.

[0029] In the following description, a base station (BS) is an entity that allocates resources to a terminal, and may be at least one of a gNode B, an eNode B, a Node B, a wireless access unit, a base station controller, and a node on a network. The terminal may include a UE, a mobile station (MS), a cellular phone, a smart phone, a computer, or a multimedia system capable of performing a communication function. In the present disclosure, "downlink (DL)" refers to a wireless link via which a base station sends a signal to a terminal, and "uplink (UL)" refers to a wireless link via which a terminal sends a signal to a base station. In addition, in the following description, a long-term evolution (LTE) or advanced LTE (LTE-A) system may be used as an example for description, but the embodiments of the present disclosure may also be applied to other communication systems with similar technical backgrounds or channel types. Examples of such communication systems may include fifth-generation mobile communication technologies (5G, new air interfaces, and NR) developed on the basis of LTE-A, and in the following description, "5G" may be a concept covering existing LTE, LTE-A, or other similar services. In addition, based on the judgment of those skilled in the art, without significantly departing from the scope of the present disclosure, the embodiments of the present disclosure may also be applied to other communication systems through some modifications. Here, it will be understood that each block of the flowchart illustrations and combinations of blocks in the flowchart illustrations can be implemented by computer program instructions.

[0030] These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device create a device for implementing the functions specified in one or more boxes in the flowchart. These computer program instructions can also be stored in a computer-usable or computer-readable memory, which can instruct the computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer or computer-readable memory produce a product including an instruction device that implements the functions specified in one or more boxes of the flowchart. The computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are performed on the computer or other programmable device, thereby generating a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more boxes of the flowchart.

[0031] In addition, each box in the flowchart diagram can represent a code module, a code segment or a code portion, and the code includes one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions noted in the box may occur in an order different from the order shown. For example, the two boxes shown in succession can actually be executed substantially simultaneously, or sometimes can be executed in reverse order according to the functions involved. As used in the disclosed embodiments, the term "unit" refers to a software element or hardware element that performs a predetermined function, such as a field programmable gate array (FPGA) or an application-specific integrated circuit (ASIC). However, the meaning of the term "unit" is not always limited to software or hardware. "Unit" can be constructed to be stored in an addressable storage medium or to execute one or more processors. Therefore, the term "unit" includes, for example, software elements, object-oriented software elements, class elements or task elements, processes, functions, attributes, procedures, subroutines, program code segments, drivers, firmware, microcodes, circuits, data, databases, data structures, tables, arrays and parameters. The elements and functions provided by the "unit" can be combined into fewer elements or "units", or can be divided into more elements or "units". Furthermore, these elements and "units" may be implemented to reproduce one or more central processing units (CPUs) within a device or secure multimedia card. Furthermore, a "unit" in an embodiment may include one or more processors.

[0032] In the following description, for the convenience of description, the present disclosure will be described using the terms and names defined in the 5GS standard and the NR standard, which are the latest standards specified by the 3rd Generation Partnership Project Long Term Evolution (3GPP LTE) in the existing communication standards. However, the present disclosure is not limited by these terms and names, and can also be applied to systems that comply with other standards. For example, the present disclosure can be applied to 3GPP 5GS / NR (fifth generation mobile communication standard).

[0033] Figure 1 The structure of the next generation mobile communication system is shown.

[0034] Reference Figure 1 The wireless access network of the next generation mobile communication system (new radio (NR)) includes a next generation base station (new wireless node B (gNB)) a-10 and AMF a-05 (new wireless core network). The user terminal (new wireless user equipment, hereinafter referred to as NR UE or terminal) a-15 accesses the external network through gNB a-10 and AMF a-05.

[0035] exist Figure 1In the figure, gNB corresponds to the evolved Node B (eNB) in the conventional LTE system. The gNB can be connected to the NR UE through a wireless channel and can provide better services than the conventional Node B (as shown in reference number a-20). Since all user traffic is provided through a shared channel in the next generation mobile communication system, a device for collecting and scheduling status information of the buffer status, available transmission power status, and channel status of the UE is required, which corresponds to gNB a-10. One gNB usually controls multiple cells. The gNB can have a bandwidth wider than the traditional maximum bandwidth to achieve ultra-high-speed data transmission compared to conventional LTE, and can apply orthogonal frequency division multiplexing (OFDM) through wireless access technology, and can also apply beamforming technology. In addition, according to the channel state of the UE, an adaptive modulation and coding (AMC) scheme that determines the modulation scheme and channel coding rate is applied. AMF a-05 performs functions such as supporting mobility, configuring bearers, configuring quality of service (QoS), etc. AMFa-05 is a device that performs various control functions and performs mobility management functions for UE, and is connected to multiple base stations. In addition, the next generation mobile communication system can be connected to the conventional LTE system, and the AMF a-05 is connected to the MME a-25 through a network interface. The MME a-25 is connected to the eNB a-30 corresponding to the LTE base station. The UE supporting LTE-NR dual connection can send and receive data while maintaining a connection not only with the gNB but also with the eNB (as shown by reference numeral a-35).

[0036] Figure 2 A function of reporting a flight path of an airborne UE in a next generation mobile communication system according to an embodiment is shown.

[0037] The next generation mobile communication system can be used as a communication means for public mobile tools such as unmanned / unmanned aerial vehicles (UAV) or unmanned / unmanned aerial mobiles (UAM). To this end, based on air UE, a function of supporting communication services for air UE will be introduced in the next generation mobile communication system.

[0038] UAV / UAM has an application scenario in which movement is performed along a predetermined flight path b-30. Therefore, when the gNB b-10 knows the predetermined path, the information (e.g., the predetermined path) can be used to support the mobility (e.g., handover) of the aerial UE b-05. To this end, the aerial UE b-05 can inform the gNB b-10 that the aerial UE itself has flight path information through a predetermined RRC message (e.g., RRC connection establishment complete / RRC connection recovery complete / RRC connection reconstruction complete / RRC connection reconfiguration complete, etc., as shown in reference number b-15). The gNB b-10 can request the flight path information from the aerial UE b-05 through a UE information request message b-20. The aerial UE b-05 that receives the request from the gNB b-10 can report the flight path information (IE FlightPathInfoReport) to the gNBb-10 through a UE information response message b-25. The flight path information b-35 can be configured in the form of a list of waypoint (location location) information b-40, where the aerial UE b-05 should fly along these waypoints. At this time, the waypoint information b-40 may include location information b-45 of each waypoint and estimated time information b-50 of the airborne UE passing through the corresponding point.

[0039] When the gNB b-10 requests flight path information from the airborne UE b-05 through the UE information request message b-20, it can indicate the maximum number of waypoints that can be reported through the UE information response message b-25 (or the number of waypoints to be reported) and whether to insert the time information b-50 into the waypoint information b-40.

[0040] The airborne UE b-05 may report the flight path information to the gNB b-10 through the UE information response message b-25. The airborne UE b-05 may report to the gNB b-10 the maximum number of waypoints configured by the gNB b-10 through the UE information request message b-20, or report information about N waypoints within the maximum number of waypoints defined in the standard (or when the gNB configures the number of waypoints to be reported, the airborne UE may report to the gNB information about the waypoints corresponding to the number). In addition, the airborne UE b-05 may insert the time information b-50 only when the gNB b-10 instructs through the UE information request message b-20 to insert the time information into the waypoint information b-40. Otherwise, the airborne UE b-05 may insert the time information without any gNB configuration.

[0041] Figure 3 A function of updating a flight path of an airborne UE in a next generation mobile communication system according to an embodiment is shown.

[0042] UE c-05 passing in the air Figure 2 After reporting the flight path c-20 to gNB c-10 through the process, the flight path of the airborne UE c-05 may be changed to the new path c-15. The change of the flight path may be intentional by the UAV / UAM user or server, or it may be caused by the external environment (weather, traffic congestion, etc.). When the flight path changes, the airborne UE c-05 can report the updated flight path information (changed flight path information) to the gNB c-10 through the predetermined RRC message c-25. At this time, the updated flight path information may include all waypoint information about the new flight path c-15, or only partially include the waypoint information that has changed compared to the conventionally reported flight path c-20.

[0043] When the gNB c-10 receives a report about the changed flight path information c-25 from the airborne UE c-05, it can optimize the support for the mobility of the airborne UE c-05 based on the changed flight path information. For example, the gNB c-10 can pre-detect the cell information (frequency, bandwidth, etc.) operated by at least one base station located at a waypoint to which the airborne UE c-05 is to move along the changed flight path, and based on the cell information, reconfigure the measurement and (conditional) switching of the airborne UE c-05 through the RRC reconfiguration process c-30, or pre-perform the inter-gNB signaling operation required for the handover (HO) of the airborne UE c-05, thereby optimizing the support for mobility.

[0044] Figure 4 A flowchart is shown of a process in which an aerial UE reports to a gNB whether to update a flight path and the gNB requests an updated path in a next generation mobile communication system according to an embodiment.

[0045] When the flight path reported in regular mode changes, UE d-05 can report to gNB d-10 whether to update the flight path. Thereafter, the gNB can instruct the UE to report the updated flight path.

[0046] In operation d-15, UE d-05 may report to gNB d-10 that the UE itself has flight path information through an RRC Setup Complete / RRC Recovery Complete / RRC Reestablishment Complete / RRC Reconfiguration Complete message. To report the presence of flight path information, these messages may contain a 1-bit indicator, such as flightPathInfoAvailable.

[0047] In operation d-20, UE d-05 may report its capability information to gNB d-10. At this time, the capability information may indicate whether the UE supports flight path information reporting and whether the UE supports flight path information updating.

[0048] In operation d-25, gNB d-10 may request UE d-05 to report the flight path through a UE Information Request message. At this time, the maximum number of waypoints (or the number of waypoints to be reported) that UE d-05 may report through a UE Information Response message d-30 and whether to insert time information into the waypoint information may also be indicated.

[0049] In operation d-30, UE d-05 may report flight path information to gNB d-10 through a UE information response message. The airborne UE d-05 may report to gNB d-10 the maximum number of waypoints configured by gNB d-10 through a UE information request message d-25, or report information about N waypoints within the maximum number of waypoints defined in the standard (or when the gNB configures the number of waypoints to be reported, the airborne UE may report to the gNB information about waypoints corresponding to the number). In addition, UE d-05 may insert time information only when gNB d-10 instructs to insert time information into waypoint information through a UE information request message d-25, except that UE d-05 may insert time information without any base station configuration.

[0050] The method of the airborne UE d-05 reporting to the gNB d-10 whether to update the flight path considers the following options. According to an embodiment, the airborne UE d-05 can report to the gNB d-10 whether to update the flight path by at least one of the following first option or second option.

[0051] 1. First option A:

[0052] In operation d-35, the flight path of the UE d-05 in the air changes, and the UE d-05 can detect the change of the flight path. Thereafter, when performing the RRC recovery / reestablishment / reconfiguration process, the gNB d-10 can send an RRC recovery / RRC reconstruction / RRC reconfiguration message to the UE d-05 in operation d-40. In operation d-45, when the flight path update condition is met, when the UE d-05 in the air sends the RRC recovery complete / RRC reconstruction complete / RRC reconfiguration complete message to the gNB d-10, an indicator (e.g., flightPathInfoUpdate) indicating whether the flight path is updated can be included. For example, the indicator can be 1 bit.

[0053] 2. Second option B:

[0054] In operation d-50, when the flight path of UE d-05 in the air changes, gNB d-10 may configure UE d-05 to report whether to update the flight path through the RRC reconfiguration process. At this time, in order to prevent the load of gNB d-10 from increasing due to the UE's too frequent flight path update reports, gNB d-10 may also configure a prohibit timer value indicating the minimum time interval between path update reports (for example, when the prohibit timer is configured, the UE may start the prohibit timer when reporting the flight path update, and may not report a new path update before the corresponding prohibit timer expires).

[0055] In operation d-55, the flight path of UE d-05 in the air changes, and UE d-05 can detect the change of the flight path. When it is detected in operation d-55 that the flight path of UE d-05 changes, or UE d-05 has a new flight path, UE d-05 can initiate a process of reporting to gNB d-10 whether to update the flight path.

[0056] When the flight path update condition is met, the airborne UE d-05 may report to the gNB d-10 whether the flight path is updated in operation d-60. In order to report to the gNB d-10 whether the flight path is updated, the UE d-05 may insert an indicator (e.g., flightPathInfoUpdate) indicating whether the flight path is updated into a predetermined RRC message (e.g., UE assistance information) and send the RRC message, or may send a media access control control element (MAC CE) for reporting the flight path update to the gNB d-10. For example, the indicator may be 1 bit.

[0057] When the first option A among these options is used, the signaling load can be reduced by using the RRC recovery complete / RRC reestablishment complete / RRC reconfiguration complete message to report whether the flight path is updated, rather than sending a separate RRC message or MAC CE to report whether the flight path is updated. However, in this case, the UE d-05 can report the flight path update only when it receives the RRC recovery / RRC reestablishment / RRC reconfiguration message from the gNB d-10, so there may be a delay from the time point d-35 when the flight path is actually changed to the time point d-45 when the flight path update is reported.

[0058] When the second option B among these options is used, the UE d-05 in the air may send a separate RRC message or MAC CE to the gNB d-10 to report whether to update the flight path. In this case, the UE d-05 may report to the gNB d-10 whether to update the flight path immediately after detecting a change in the flight path.

[0059] The gNB d-10 that detects the update of the flight path of the airborne UE d-05 through the above process (first option A or second option B) may request the UE d-05 to report the changed flight path in operation d-65. At this time, the gNB d-10 may configure the UE d-05 to re-report all waypoint information about the changed flight path regardless of the conventionally reported flight path d-30, or to only partially report the changed waypoint information based on the conventionally reported flight path d-30.

[0060] In operation d-70, the airborne UE d-05 may report the changed flight path information according to the request from the gNB in ​​operation d-65. At this time, the UE d-05 may re-report all waypoint information about the changed flight path, or only partially report the waypoint information that has been changed compared to the conventionally reported flight path d-30. For example, the conventionally reported flight path includes five waypoints (w1, w2, w3, w4, and w5), the flight path is changed and two of the five waypoints (w4 and w5) may be changed to waypoints (w4' and w5'), and a new waypoint (w6) may be added. In this case, the UE d-05 may report information about all waypoints (w1, w2, w3, w4', w5', and w6) included in the changed path, or only partially report the changed waypoints (w4', w5', and w6). Furthermore, even if the position and time information of a specific waypoint is only partially changed, all the position and time information of the corresponding waypoint may be re-reported, or only the changed position or time information may be partially reported.

[0061] Figure 5 A flowchart of a process in which an aerial UE reports an updated flight path to a gNB in ​​a next generation mobile communication system according to an embodiment is shown.

[0062] In operation e-15, the airborne UE e-05 may report to the gNB e-10 that the UE itself has the flight path information through an RRC setup complete / RRC recovery complete / RRC reestablishment complete / RRC reconfiguration complete message. In order to report the existence of the flight path information, these messages may include an indicator such as flightPathInfoAvailable. For example, the indicator may be 1 bit.

[0063] In operation e-20, UE e-05 may report its capability information to gNB e-10. At this time, the capability information may indicate whether UE e-05 supports flight path information reporting and flight path information updating.

[0064] In operation e-25, gNB e-10 may request UE e-05 to report the flight path through a UE information request message. At this time, the maximum number of waypoints (or the number of waypoints to be reported) that UE e-05 can report through a UE information response message e-30, and whether to insert time information into the waypoint information may also be indicated.

[0065] In operation e-30, UE e-05 may report flight path information to gNB e-10 through a UE information response message. UE e-05 may report to gNB e-10 the maximum number of waypoints configured by gNB e-10 through a UE information request message e-25, or report information about N waypoints within the maximum number of waypoints defined in the standard (or when the gNB configures the number of waypoints to be reported, the UE may report to the gNB information about waypoints corresponding to the number). In addition, UE e-05 inserts time information only when gNB e-10 instructs to insert time information into waypoint information through a UE information request message d-25, otherwise, UE e-05 may insert time information without any gNB configuration.

[0066] In operation e-35, when the flight path of UE e-05 changes, gNB e-10 can configure UE to report the updated flight path through the RRC reconfiguration process. At this time, in order to prevent the load of gNB e-10 from increasing due to the UE's too frequent flight path update reports, gNB e-10 can also configure a prohibition timer value indicating the minimum time interval between path update reports (for example, when the prohibition timer is configured, the UE can start the prohibition timer when reporting the flight path update, and cannot report a new path update before the corresponding prohibition timer expires). In addition, gNB e-10 can configure UE e-05 to re-report all waypoint information of the changed flight path regardless of the conventionally reported flight path e-30, or only partially report the changed waypoint information based on the conventionally reported flight path e-30.

[0067] In operation e-40, the flight path of UE e-05 may change, and UE e-05 may detect the change of the flight path. When it is detected in operation e-40 that the flight path of UE e-05 has changed, or UE e-05 has a new flight path, UE e-05 may initiate a process of reporting to gNB e-10 whether to update the flight path.

[0068] When the flight path update condition is met, in operation e-45, UE e-05 may report the updated flight path to gNBe-10 through a predetermined RRC message. At this time, UE e-05 may re-report all waypoint information of the changed flight path according to the request from gNB e-10 in operation e-35, or only partially report the waypoint information that has been changed compared to the conventionally reported flight path d-30. For example, the conventionally reported flight path includes five waypoints (w1, w2, w3, w4, and w5), and the flight path may be changed so that two of the five waypoints (w4 and w5) are changed to waypoints (w4' and w5'), and a new waypoint (w6) may be added. In this case, the UE may report information about all waypoints (w1, w2, w3, w4', w5', and w6) contained in the changed path, or only partially report the changed waypoints (w4', w5', and w6). Furthermore, when the position and time information of a specific waypoint is only partially changed, all the position and time information of the corresponding waypoint may be re-reported, or only the changed position or time information may be partially reported.

[0069] Figure 6 A flowchart of a process in which an aerial UE periodically reports an updated flight path to a gNB in ​​a next generation mobile communication system according to an embodiment is shown.

[0070] In operation f-15, the airborne UE f-05 may report to the gNB f-10 that the UE itself has the flight path information through an RRC setup complete / RRC recovery complete / RRC reestablishment complete / RRC reconfiguration complete message. In order to report the existence of the flight path information, these messages may include an indicator such as flightPathInfoAvailable. For example, the indicator may be 1 bit.

[0071] In operation f-20, UE f-05 may report its own capability information to gNB f-10. At this time, through the capability information, it may be indicated whether UE f-05 supports flight path information reporting and whether it supports flight path information updating.

[0072] In operation f-25, gNB f-10 may request UE f-05 to report the flight path through a UE information request message. At this time, the maximum number of waypoints (or the number of waypoints to be reported) that UE f-05 may report through a UE information response message f-30 and whether to insert time information into the waypoint information may also be indicated.

[0073] In operation f-30, UE f-05 may report flight path information to gNB f-10 through a UE information response message. UE f-05 may report to gNB f-10 the maximum number of waypoints configured by gNB f-10 through a UE information request message f-25, or report information about N waypoints within the maximum number of waypoints defined in the standard (or when the gNB configures the number of waypoints to be reported, the UE may report to the gNB information about waypoints corresponding to the number). In addition, UE f-05 inserts time information only when gNB f-10 instructs to insert time information into waypoint information through a UE information request message f-25, otherwise, UE f-05 may insert time information without any gNB configuration.

[0074] In operation f-35, gNB f-10 may configure UE f-05 to periodically report the flight path through an RRC reconfiguration procedure. To this end, gNB f-10 may configure the flight path reporting period (or time interval). In addition, gNB f-10 may configure UE f-05 to re-report all waypoint information of the changed flight path regardless of the conventionally reported flight path, or to only partially report the changed waypoint information based on the conventionally reported flight path.

[0075] In operation f-40, the flight path of UE f-05 may change, and UE f-05 may detect the change in the flight path.

[0076] When the flight path reporting time point arrives and the flight path update conditions are met according to the flight path reporting settings configured by the gNB in ​​operation f-35, in operation f-45, UE f-05 may report the updated flight path to gNB f-10 through a predetermined RRC message. At this time, UE f-05 may re-report all waypoint information of the changed flight path according to the request from gNB f-10 in operation f-35, or only partially report the waypoint information that has been changed compared to the conventionally reported flight path f-30. For example, the conventionally reported flight path f-30 includes five waypoints (w1, w2, w3, w4, and w5), and the flight path may be changed so that two of the five waypoints (w4 and w5) are changed to waypoints (w4' and w5'), and a new waypoint (w6) may be added. In this case, UE f-05 may report information of all waypoints (w1, w2, w3, w4', w5', and w6) included in the changed path, or may only partially report the changed waypoints (w4', w5', and w6). In addition, when the position and time information of a specific waypoint is only partially changed, all the position and time information of the corresponding waypoint may be re-reported, or only the changed position or time information may be partially reported.

[0077] On the other hand, when the flight path reporting time point arrives according to the flight path reporting setting configured by gNB f-10 in operation f-35, but the flight path update condition is not met, UE f-05 can omit the flight path reporting at the corresponding time point (operation f-50).

[0078] According to an embodiment, the following operations may be commonly applied to reference Figure 3 , Figure 4 , Figure 5 and Figure 6 Describes the flight path update operation.

[0079] ●Flight path update conditions

[0080] The expected flight path of the UE may keep changing on a minute-by-minute basis depending on the flight conditions. Therefore, if the UE reports the updated flight path to the gNB every time the flight path changes, unnecessary load may be generated. For example, in the viewpoint information, the location information may remain unchanged, but the time information of the time point passing through the corresponding waypoint may keep changing on a minute-by-minute basis. When the UE reports the updated flight path to the gNB every time the flight path changes, the load on the gNB may increase significantly. On the other hand, when the changed information is not much different from the regular information, the gNB may not need to perform any additional operations to optimize the mobility support (measurements and HO reconfiguration) for the corresponding UE.

[0081] According to an embodiment, the following operations are provided as conditions for determining whether the UE needs to update the flight path (in Figure 4 , Figure 5 and Figure 6 ) in the description of the flight path update condition.

[0082] 1. When any change occurs to the flight path reported by the UE regularly, the UE may update the flight path. Specifically, if the predetermined waypoints included in the flight path reported regularly meet at least one of the following conditions, the flight path update condition may be met.

[0083] (1) Changes to LocationInfo (location information)

[0084] (2) Changes to TimeInfo (time information)

[0085] However, the change condition for time information may not be included. The gNB may indicate whether the change condition for time information is included in the flight path update condition when configuring the UE to report the updated flight path.

[0086] Specifically, in Figure 4In the embodiment of the present invention, when determining whether the update condition is met, the following additional conditions may also be considered depending on whether the prohibition timer is configured in operation d-50:

[0087] 1) When the inhibit timer is configured, the flight path is changed as described in the first option so that the last reported flight path is different from the current flight path, and when the inhibit timer is not running, the flight path update condition is met.

[0088] 2) When the inhibit timer is not configured, the flight path update condition is met if at least one of the following conditions is met:

[0089] - the situation where the flight path has changed as described in the first option and the last reported flight path is different from the current flight path;

[0090] - The flight path changes as described in the first option and makes the last reported flight path different from the current flight path, and the UE does not report whether to update the flight path after the last reported flight path;

[0091] - The flight path at the time when the UE last reported whether to update the flight path is different from the current flight path;

[0092] - The situation where the flight path has changed since the UE last reported whether the flight path was updated.

[0093] Specifically, in Figure 5 In the embodiment of the present invention, when determining whether the update condition is met, the following additional conditions may also be considered depending on whether the prohibition timer is configured in operation e-35:

[0094] 1) When the inhibit timer is configured, the flight path update condition is met if at least one of the following conditions is met:

[0095] - the flight path is changed as described in the first option and causes the last reported flight path to be different from the current flight path, and the inhibit timer is not running;

[0096] - The case where the UE has no flight path information and has not reported a flight path after the UE was configured to report flight path updates.

[0097] 2) When the inhibit timer is not configured, the flight path update condition is met if at least one of the following conditions is met:

[0098] - the situation where the flight path has changed as described in the first option and the last reported flight path is different from the current flight path;

[0099] - The case where the UE has no flight path information and has not reported a flight path after the UE was configured to report flight path updates.

[0100] 2. Second option: When the flight path previously reported by the UE changes to a certain degree or more, the UE may update the flight path. Specifically, if at least one of the following conditions is satisfied for a predetermined waypoint included in a conventionally reported flight path, the flight path update condition may be satisfied.

[0101] (1) LocationInfodifference > LocationChangeThreshold

[0102] -LocationInfodifference: indicates the change between the regular reported location information and the changed location information;

[0103] -LocationChangeThreshold: Indicates the threshold configured by the gNB. For example, it can be a value in centimeters or meters.

[0104] (2) TimeInfodifference > TimeChangeThreshold

[0105] TimeInfodifference: indicates the difference between the time information reported normally and the changed time information;

[0106] TimeChangeThreshold: Indicates the threshold configured by the gNB. For example, it can be a value in milliseconds, seconds, minutes, hours.

[0107] However, the change condition for time information may not be included. The gNB may also indicate whether the change condition for time information is included in the flight path update condition when configuring the UE to report the updated flight path.

[0108] Specifically, in Figure 4 In the embodiment of the present invention, when determining whether the update condition is met, the following additional conditions may also be considered depending on whether the prohibition timer is configured in operation d-50:

[0109] 1) When the inhibit timer is configured, the flight path changes as described in the second option, and the last reported flight path differs from the current flight path to a certain degree or greater, and when the inhibit timer is not running, the flight path update condition is met.

[0110] 2) When the inhibit timer is not configured, the flight path update condition is met if at least one of the following conditions is met:

[0111] - a situation where the flight path is changed as described in the second option and the last reported flight path differs from the current path by a certain degree or more;

[0112] - The flight path is changed as described in the second option and the difference between the last reported flight path and the current flight path reaches a certain degree or more, and the UE has not reported whether to update the flight path after the last flight path report;

[0113] - A case where the flight path at the time point when the UE last reported whether to update the flight path differs from the current flight path to a certain degree or more;

[0114] - Conditions where the flight path has changed by a certain amount or more since the last report on whether the flight path was updated.

[0115] Specifically, in Figure 5 In the embodiment of the present invention, when determining whether the update condition is met, the following additional conditions may also be considered depending on whether the prohibition timer is configured in operation e-35:

[0116] 1) When the inhibit timer is configured, the flight path update condition is met if at least one of the following conditions is met:

[0117] - The flight path is changed as described in the second option and causes the last reported flight path to differ from the current flight path by a certain degree or more, and the prohibition timer is not running;

[0118] - The case where the UE has flight path information and has not reported the flight path after the UE was configured to report flight path updates.

[0119] 2) When the inhibit timer is not configured, the flight path update condition is met if at least one of the following conditions is met:

[0120] - A situation where the flight path is changed as described in the second option and the last reported flight path differs from the current flight path by a certain degree or more;

[0121] - The case where the UE has flight path information and has not reported the flight path after the UE was configured to report flight path updates.

[0122] 3. When a certain number or more of the waypoints included in the flight path previously reported by the UE change, the UE may update the flight path. Specifically, for the waypoints included in the previously reported flight path, the flight path update condition is satisfied when the following conditions are met.

[0123] (1) # of waypoints changed > waypoint change threshold

[0124] - # of Changed Waypoints: Indicates the number of waypoints that have changed among the waypoints included in the previously reported flight path. As a condition for determining whether each waypoint has changed, both the first option and the second option can be used.

[0125] -Waypoint Change Threshold: Indicates the threshold configured by the gNB.

[0126] Specifically, in Figure 4 In the embodiment of the present invention, when determining whether the update condition is met, the following additional conditions may also be considered depending on whether the prohibition timer is configured in operation d-50:

[0127] 1) When the inhibit timer is configured, the flight path is changed as described in the third option and the difference between the number of waypoints contained in the last reported flight path and the current flight path reaches a specific number or more, and when the inhibit timer is not running, the flight path update condition is met.

[0128] 2) When the inhibit timer is not configured, the flight path update condition is met if at least one of the following conditions is met:

[0129] - the flight path is changed as described in the third option and the number of waypoints contained in the last reported flight path differs from the current flight path by a certain number or more;

[0130] - The flight path is changed as described in the third option and the number of waypoints contained in the last reported flight path differs from the number of waypoints contained in the current flight path by a certain number or more, and the UE has not reported whether to update the flight path after the last flight path report;

[0131] - The situation where the number of waypoints contained in the flight path at the time when the UE last reported whether to update the flight path differs from the number of waypoints contained in the current flight path by a specific number or more;

[0132] - The situation where the number of waypoint changes contained in the flight path reaches a certain number or more since the UE last reported whether the flight path was updated.

[0133] Specifically, in Figure 5 In the embodiment of the present invention, when determining whether the update condition is met, the following additional conditions may also be considered depending on whether the prohibition timer is configured in operation e-35:

[0134] 1) When the inhibit timer is configured, the flight path update condition is met if at least one of the following conditions is met:

[0135] - the flight path is changed as described in the third option and the number of waypoints contained in the last reported flight path differs from the current flight path by a certain number or more, and the prohibition timer is not running;

[0136] - the case where the UE has flight path information and has not reported the flight path after the UE was configured to report flight path updates;

[0137] 2) When the inhibit timer is not configured, the flight path update condition is met if at least one of the following conditions is met:

[0138] - The flight path is changed as described in the third option, so that the last reported flight path differs from the current flight path by a certain degree or more;

[0139] - The case where the UE has flight path information and has not reported the flight path after the UE was configured to report flight path updates.

[0140] 4. When the next waypoint to which the UE is to move is different from the waypoint on the conventionally reported flight path, the UE may update the flight path. For example, the conventionally reported flight path includes waypoints (w1, w2, w3, and w4), and since waypoints (w3 and w4) have changed, the new flight path may include waypoints (w1, w2, w3', and w4'). In this case, after the UE passes waypoint w2, waypoint w3 is changed to waypoint w3', and therefore the path change update condition may be met, and the UE may report the changed flight path. At this time, as a condition for determining whether each waypoint has changed, both the first option and the second option can be used.

[0141] When one or more options are supported in the standard, the gNB may explicitly indicate which option to use through the RRC reconfiguration procedure. Alternatively, the gNB may indirectly indicate the option to use by configuring the parameters required to use a specific option (e.g., in the case of the third operation or waypoint change threshold) instead of explicitly indicating the option.

[0142] ● When the UE performs a handover, the flight path is switched between gNBs and the UE’s flight path report message is retransmitted

[0143] exist Figure 4 , Figure 5 and Figure 6In the present invention, after the UE reports the updated flight path to the serving cell through a predetermined RRC message (e.g., UE assistance information), the UE can switch to another cell. When the gNBs managing the serving cell and the target cell are different, the gNB of the serving cell can transmit the flight path information of the UE to the gNB of the target cell through the inter-gNB signaling used to prepare for the handover. However, when the time point at which the UE updates the flight path is just before the handover is performed (e.g., within 1 second), the gNB of the serving cell cannot transmit the updated flight path information of the UE through the inter-gNB signaling exchanged during the handover preparation process. Therefore, when the UE reports the flight path updated just before the handover (e.g., within 1 second) to the existing cell, the predetermined RRC message containing the flight path information can be retransmitted after the handover.

[0144] ●Dual connection scenario

[0145] Under dual connectivity conditions, if a master cell group (MCG) fails, the UE may send a predetermined RRC message containing an updated flight path to the SCG via one of split SRB1, split SRB2, and split SRB3.

[0146] Figure 7 A block diagram showing the internal structure of a UE according to an embodiment.

[0147] Reference Figure 7 , the UE includes a radio frequency (RF) processor g-10, a baseband processor g-20, a memory g-30, and a controller g-40.

[0148] The RF processor g-10 performs functions of sending and receiving signals through wireless channels, such as converting or amplifying the frequency band of the signal. For example, the RF processor g-10 converts the baseband signal provided by the baseband processor g-20 into an RF frequency band signal, transmits the RF frequency band signal through the antenna, and converts the RF frequency band signal received through the antenna into a baseband signal. The RF processor g-10 may include a transmit filter, a receive filter, an amplifier, a mixer, an oscillator, a digital-to-analog converter (DAC), an analog-to-digital converter (ADC), etc. Although Figure 7 Only one antenna is shown, but the UE may include multiple antennas. In addition, the RF processor g-10 may include multiple RF chains. Moreover, the RF processor g-10 may perform beamforming. For beamforming, the RF processor g-10 may control the phase and amplitude of each signal transmitted / received through multiple antennas or antenna elements. In addition, the RF processor g-10 may perform MIMO and may receive multiple layers when performing MIMO operations.

[0149] The baseband processor g-20 performs the conversion function between the baseband signal and the bit stream according to the physical layer standard of the system. For example, in data transmission, the baseband processor g-20 generates complex symbols by encoding and modulating the transmitted bit stream. In addition, in data reception, the baseband processor g-20 reconstructs the received bit stream by demodulating and decoding the baseband signal provided by the RF processor g-10. For example, in the orthogonal frequency division multiplexing (OFDM) scheme, when transmitting data, the baseband processor g-20 generates complex symbols by encoding and modulating the transmitted bit stream, maps the complex symbols to subcarriers, and then configures OFDM symbols through inverse fast Fourier transform (IFFT) operations and cyclic prefix (CP) insertion. In addition, when receiving data, the baseband processor g-20 divides the baseband signal provided by the RF processor g-10 in units of OFDM symbols, reconstructs the signal mapped to the subcarriers through a fast Fourier transform (FFT) operation, and then reconstructs the received bit stream through demodulation and decoding.

[0150] The baseband processor g-20 and the RF processor g-10 can send and receive signals in the above manner. Therefore, each of the baseband processor g-20 and the RF processor g-10 can be referred to as a transmitter, a receiver, a transceiver, or a communication unit. In addition, at least one of the baseband processor g-20 and the RF processor g-10 may include multiple communication modules to support a variety of different wireless access technologies. In addition, at least one of the baseband processor g-20 and the RF processor g-10 may include different communication modules to process signals of different frequency bands. For example, different wireless access technologies may include wireless LANs (e.g., IEEE 802.11) and cellular networks (e.g., LTE). In addition, different frequency bands may include ultra-high frequency (SHF) (e.g., 2.NRHz, NRhz) bands and millimeter wave (mmWave) (e.g., 60GHz) bands.

[0151] The memory g-30 stores data such as basic programs, applications, configuration information, etc. for UE operation. In particular, the memory g-30 can store information related to a second access node that performs wireless communication using a second radio access technology. In addition, the memory g-30 provides the stored data according to a request from the controller g-40.

[0152] The controller g-40 controls the overall operation of the UE. For example, the controller g-40 sends and receives signals through the baseband processor g-20 and the RF processor g-10. In addition, the controller g-40 records data in the memory g-30 and reads data. To this end, the controller g-40 may include at least one processor g-42. For example, the controller g-40 may include a communication processor (CP) that performs communication control and an application processor (AP) that controls a high layer such as an application.

[0153] Figure 8 A block diagram of a gNB configuration according to an embodiment is shown.

[0154] like Figure 8 As shown, the gNB includes an RF processor h-10, a baseband processor h-20, a backhaul communication unit h-30, a memory h-40, and a controller h-50.

[0155] The RF processor h-10 performs functions of sending and receiving signals through wireless channels, such as converting or amplifying the frequency band of the signal. For example, the RF processor h-10 converts the baseband signal provided by the baseband processor h-20 into a radio frequency band signal, transmits the radio frequency band signal through the antenna, and converts the radio frequency band signal received through the antenna into a baseband signal. The RF processor h-10 may include a transmit filter, a receive filter, an amplifier, a mixer, an oscillator, a DAC, an ADC, etc. Although Figure 8 Only one antenna is shown, but the first access node may include multiple antennas. In addition, the RF processor h-10 may include multiple RF chains. In addition, the RF processor h-10 may perform beamforming. For beamforming, the RF processor h-10 may control the phase and amplitude of each signal sent / received through multiple antennas or antenna elements. The RF processor may perform downlink MIMO operations by sending one or more layers.

[0156] The baseband processor h-20 performs a conversion function between a baseband signal and a bit stream according to the physical layer standard of the first wireless access technology. For example, in data transmission, the baseband processor h-20 generates complex symbols by encoding and modulating the transmitted bit stream. In addition, in data reception, the baseband processor h-20 reconstructs the received bit stream by demodulating and decoding the baseband signal provided by the RF processor h-10. For example, in the OFDM scheme, when transmitting data, the baseband processor h-20 can generate complex symbols by encoding and modulating the transmitted bit stream, mapping the complex symbols to subcarriers, and then configuring the OFDM symbols through IFFT operations and CP insertion. In addition, when receiving data, the baseband processor h-20 divides the baseband signal provided by the RF processor h-10 in units of OFDM symbols, recovers the signal mapped to the subcarrier through FFT operations, and then recovers the received bit string through demodulation and decoding. The baseband processor h-20 and the RF processor h-10 can send and receive signals in the above manner. Therefore, each of the baseband processor h-20 and the RF processor h-10 may be referred to as a transmitter, a receiver, a transceiver, or a communication unit.

[0157] The backhaul communication unit h-30 provides an interface for communicating with other nodes in the network. That is, the backhaul communication unit h-30 converts the bit stream sent from the MeNB to another node (e.g., secondary evolved Node B (SeNB), core network, etc.) into a physical signal, and converts the physical signal received from other nodes into a bit stream.

[0158] The memory h-40 stores data such as basic programs, applications, configuration information, etc. for gNB operation. In particular, the memory h-40 can store information about the bearer assigned to the access UE and information about the measurement results reported by the access UE. In addition, the memory h-40 can store information for determining whether to provide multiple connections to the UE or stop multiple connections. In addition, the memory h-40 provides the stored data according to the request of the controller h-50.

[0159] The controller h-50 controls the overall operation of the MeNB. For example, the controller h-50 sends and receives signals through the baseband processor h-20 and the RF processor h-10 or through the backhaul communication unit h-30. In addition, the controller h-50 records data in the memory h-40 and reads data. To this end, the controller h-50 may include at least one processor h-52.

[0160] The methods of various embodiments described in the claims or the specification of the present disclosure may be implemented by hardware, software, or a combination of hardware and software.

[0161] When these methods are implemented by software, a computer-readable storage medium for storing one or more programs (software modules) may be provided. One or more programs stored in the computer-readable storage medium may be configured to be executed by one or more processors in an electronic device. At least one program may include instructions for causing an electronic device to perform the methods of the various embodiments defined in the appended claims and / or disclosed herein.

[0162] Programs (software modules or software) can be stored in non-volatile memory, including random access memory and flash memory, read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), magnetic disk storage devices, compact disk ROM (CD-ROM), digital versatile disk (DVD) or other types of optical storage devices, or magnetic tape. Alternatively, any combination of some or all of them can form a memory for storing programs. In addition, multiple such memories may be included in an electronic device.

[0163] In addition, the program may be stored in an additional storage device that can access the electronic device through a communication network such as the Internet, an intranet, a local area network (LAN), a wide area network (WLAN), and a storage area network (SAN), or a combination thereof. Such a storage device can access the electronic device through an external port. In addition, a separate storage device on a communication network can access the portable electronic device.

[0164] In the above detailed embodiments of the present disclosure, the elements included in the present disclosure are expressed in singular or plural form according to the detailed embodiments presented. However, for ease of description, the singular form or plural form is appropriately selected according to the presented situation, and the present disclosure is not limited to the elements expressed in the singular or plural. Therefore, the elements expressed in the plural may also include a single element, or the elements expressed in the singular may also include multiple elements.

[0165] Although specific embodiments have been described in the detailed description of the present disclosure, it is apparent that various modifications and changes may be made thereto without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be defined as being limited to these embodiments, but should be defined by the appended claims and their equivalents.

Claims

1. A terminal in a wireless communication system, the terminal comprising: Transceiver; as well as At least one processor configured to: receiving, by the transceiver, a first message for configuring a flight path update notification from a base station, Identify that the flight path has been updated, and Based on the first message and the identification, a second message is sent to the base station by the transceiver, the second message including a flight path update indication indicating that the flight path has been updated.

2. The terminal according to claim 1, wherein: The first message includes information about a threshold for triggering the flight path update notification, wherein the second message is sent based on the information related to the threshold for triggering the flight path update notification, wherein the information related to the threshold is related to time or distance, and The flight path update indication is included in user equipment UE assistance information.

3. The terminal according to claim 1, wherein: The at least one processor is further configured to: receiving, by the transceiver, from the base station a third message for requesting a flight path report, and A fourth message for reporting information related to the updated flight path is sent to the base station through the transceiver.

4. The terminal according to claim 3, wherein: The third message includes information for configuring reporting of all or part of the updated flight path.

5. The terminal according to claim 1, wherein: The at least one processor is further configured to: sending, by the transceiver, to the base station a fifth message indicating whether flight plan information is available, receiving, by the transceiver, from the base station a sixth message for requesting a flight path report, and A seventh message for reporting information on the flight plan information is transmitted to the base station through the transceiver.

6. A base station in a wireless communication system, the base station comprising: Transceiver; as well as At least one processor configured to: sending a first message for configuring a flight path update notification to a terminal through the transceiver, and In a case where the flight path is identified as updated, a second message is received from the terminal through the transceiver, the second message including a flight path update indication indicating that the flight path has been updated.

7. The base station according to claim 6, wherein: The first message includes information about a threshold for triggering the flight path update notification, wherein the second message is sent based on the information related to the threshold for triggering the flight path update notification, wherein the information related to the threshold is related to time or distance, and The flight path update indication is included in user equipment UE assistance information.

8. The base station according to claim 6, wherein: The at least one processor is further configured to: sending, by the transceiver, to the terminal a third message for requesting a flight path report, and A fourth message for reporting information related to an updated flight path is received from the terminal through the transceiver.

9. The base station according to claim 8, wherein: The third message includes information for configuring reporting of all or part of the updated flight path.

10. The base station according to claim 6, wherein: The at least one processor is further configured to: receiving, by the transceiver, from the terminal a fifth message indicating whether flight plan information is available, sending, by the transceiver, to the terminal a sixth message for requesting a flight path report, and A seventh message for reporting information on the flight plan information is received from the terminal through the transceiver.

11. A method performed by a terminal in a wireless communication system, the method comprising: receiving a first message for configuring a flight path update notification from a base station; Identify that the flight path has been updated; Based on the first message and the identification, a second message is sent to the base station, the second message including a flight path update indication indicating that the flight path has been updated.

12. The method according to claim 11, wherein: The first message includes information about a threshold for triggering the flight path update notification, wherein the second message is sent based on the information related to the threshold for triggering the flight path update notification, wherein the information related to the threshold is related to time or distance, and The flight path update indication is included in user equipment UE assistance information.

13. The method according to claim 11, further comprising: receiving a third message from the base station for requesting a flight path report; as well as sending a fourth message for reporting information related to an updated flight path to the base station, The third message includes information for configuring and reporting all or part of the updated flight path.

14. A method performed by a base station in a wireless communication system, the method comprising: Sending a first message for configuring a flight path update notification to a terminal; as well as In the case where the flight path is identified as updated, a second message is received from the terminal, the second message including a flight path update indication indicating that the flight path has been updated.

15. The method according to claim 14, further comprising: sending a third message for requesting a flight path report to the terminal; as well as receiving from the terminal a fourth message for reporting information related to an updated flight path, The first message includes information related to a threshold for triggering the flight path update notification, wherein the second message is sent based on the information related to the threshold for triggering the flight path update notification, The information related to the threshold is related to time or distance. The flight path update indication is included in the user equipment UE assistance information, and The third message includes information for configuring and reporting all or part of the updated flight path.

Images