KR20230159136A - A method for configuring a first TAL for UAM service in a wireless communication system and apparatus therefor - Google Patents

Abstract

Disclosed is a method for a network to set a first TAL (Tracking Area List) for an Urban Aerial Mobility (UAM) service for a first terminal in a wireless communication system according to various embodiments, and a device therefor. Receiving a first message requesting an update of service information for the first terminal from a first server, and sending the first message to the first terminal based on UAM path information related to the UAM service being included in the first message. Disclosed is a method including the step of setting a first TAL and an apparatus therefor.

Description

A method for configuring a first TAL for UAM service in a wireless communication system and apparatus therefor}

This relates to a method and device for setting up the first TAL for UAM (Urban Aerial Mobility) service in a wireless communication system.

A wireless communication system is a multiple access system that supports communication with multiple users by sharing available system resources (eg, bandwidth, transmission power, etc.). Examples of multiple access systems include code division multiple access (CDMA) systems, frequency division multiple access (FDMA) systems, time division multiple access (TDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, and single carrier frequency (SC-FDMA) systems. division multiple access) system, MC-FDMA (multi carrier frequency division multiple access) system, etc.

As more communication devices require greater communication capacity, there is a need for improved mobile broadband communication compared to existing radio access technology (RAT). Additionally, Massive Machine Type Communications (MTC), which provides various services anytime, anywhere by connecting multiple devices and objects, is also one of the major issues to be considered in next-generation communications. In addition, communication system design considering services/terminals sensitive to reliability and latency is being discussed. In this way, the introduction of next-generation wireless access technology considering expanded mobile broadband communication, massive MTC, URLLC (Ultra-Reliable and Low Latency Communication), etc. is being discussed, and in the present invention, for convenience, the corresponding technology is used. is called new RAT or NR.

Meanwhile, recently, a new service based on UAM (Urban Aerial Mobility) has been emerging. Referring to Figure 1, UAM is a service that provides transportation such as taxis through vehicles flying in the air at 300m to 600m, and has a wireless communication environment different from that on the ground.

For example, the ground has NLOS (Non-Line of Sight) channel characteristics due to the presence of various objects, and the air is an open space and has LOS (Line of Sight) channel characteristics. Therefore, for radio waves transmitted from the same base station, cell coverage on the ground (i.e., the distance over which radio waves can reach and provide service) and cell coverage in the air may be different.

Due to this UAM wireless communication environment, terminals may have difficulty properly receiving UAM services. For example, quality deterioration or power consumption may increase due to frequent handovers. Additionally, measurement information such as signal strength measured from the corresponding terminals may interfere with existing terrestrial network automation (SON, Self Organizaton Network).

The problem to be solved is to perform frequent location registration operations of the first terminal moving at high speed using the UAM service by setting the TAL for the first terminal related to the UAM service based on the UAM path information related to the UAM service. The object of the present invention is to provide a method and device for preventing overload of the first terminal and the system, thereby minimizing battery consumption of the first terminal.

The technical problems are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below.

According to one aspect, in a wireless communication system, a method for a network to set a first TAL (Tracking Area List) for a UAM (Urban Aerial Mobility) service for a first terminal includes service information for the first terminal from a first server. It may include receiving a first message requesting an update, and configuring a first TAL for the first terminal based on the first message including UAM path information related to the UAM service. there is.

Alternatively, the first TAL may be newly configured for the UAM service based on the UAM path information.

Alternatively, the first TAL is characterized in that it is set to include TAs (Tracking Areas) or base stations corresponding to the path included in the UAM path information.

Alternatively, the UAM route information may include a route taken by the UAM device on which the first terminal rides.

Alternatively, the first message may include identification information of the first terminal on board the UAM device providing the UAM service.

Alternatively, the first message may be a terminal-specific message defined so that an update of service information can be requested for each terminal.

Alternatively, the request message may be delivered through a NEF included in the network, and the UAM path information may be delivered to a UDM included in the network.

Alternatively, the method may further include transmitting a second message containing information about the first TAL to the first terminal.

Alternatively, the second message may be delivered to the first terminal through an AMF included in the network.

Alternatively, the method may further include receiving a third message from the first server indicating termination of the UAM service.

Alternatively, the first TAL may be updated to the second TAL based on reception of the third message.

Alternatively, the first server may be UAM AF that manages UAM services.

According to another aspect, a network that sets a first TAL (Tracking Area List) for a UAM (Urban Aerial Mobility) service for a first terminal in a wireless communication system includes a communication interface and a processor connected to the communication interface, The processor controls the communication interface to receive a first message requesting an update of service information for the first terminal from a first server, based on the fact that the first message includes UAM path information of the UAM service. Thus, the first TAL for the first terminal can be set.

Alternatively, the first TAL may be set based on the path included in the UAM path information and the location information of the base station.

Alternatively, the UAM route information may include information on the route taken by the UAM device on which the first terminal rides.

According to another aspect, a method for a first terminal to configure a first Tracking Area List (TAL) for an Urban Aerial Mobility (UAM) service in a wireless communication system includes forming a first session related to the UAM service, and It may include receiving a first TAL set based on UAM path information related to the UAM service in response to the formation of a first session.

Alternatively, the first TAL may be set based on the path included in the UAM path information and the location information of the base station.

Alternatively, the first TAL is characterized in that it includes TAs (Tracking Areas) corresponding to the path included in the UAM path information.

Alternatively, the first session is formed with the UAM AF providing the UAM service when the first terminal is on board the UAM device providing the UAM service, and the first TAL is transmitted from the network in which the PDU session is formed. It is characterized by

Alternatively, when disembarking from the UAM device providing the UAM service, the method may further include receiving a second TAL from the network and updating the first TAL with the second TAL.

According to another aspect, in a wireless communication system, a first terminal that receives a first TAL (Tracking Area List) for a UAM (Urban Aerial Mobility) service includes an RF transceiver and a processor connected to the RF transceiver, and the processor is connected to the RF transceiver. The RF transceiver may be controlled to form a first session related to the UAM service, and in response to the formation of the first session, a first TAL established based on UAM path information related to the UAM service may be received.

According to another aspect, a method in which a first server supports setting of a first TAL (Tracking Area List) for a first terminal for a UAM (Urban Aerial Mobility) service in a wireless communication system includes: Establishing a TAL with a first terminal, and transmitting a first message containing UAM path information related to the UAM service in response to the formation of the first session, requesting the network to set up a TAL for the first terminal. May include steps.

Alternatively, the UAM route information may include information on a route through the UAM device on which the first terminal rides.

Alternatively, the method may include performing a deregistration procedure for the first terminal and the first session and transmitting a message indicating termination of the UAM service to the network.

Alternatively, the first server may be a UAM AF that provides the UAM service.

In a wireless communication system according to another aspect, a first server that supports setting a first TAL (Tracking Area List) for a first terminal for a UAM (Urban Aerial Mobility) service includes a communication interface and a processor connected to the communication interface. The processor controls the communication interface to form a first session for the UAM service with a first terminal, and includes UAM path information related to the UAM service in response to the establishment of the first session. By sending a message, the network can be requested to set up a TAL for the first terminal.

Various embodiments prevent frequent location registration operations of a first terminal moving at high speed using the UAM service by setting the TAL for the first terminal related to the UAM service based on UAM path information related to the UAM service. can do.

Additionally, by minimizing the location registration operation for the first terminal using the UAM service, the TAU load and paging load between the first terminal and the system can be minimized, and battery consumption of the first terminal can be minimized.

The effects that can be obtained in various embodiments are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

The drawings attached to this specification are intended to provide an understanding of the present invention, show various embodiments of the present invention, and together with the description of the specification, explain the principles of the present invention.
Figure 1 is a diagram for explaining the UAM (Urban Aerial Mobility) service.
FIG. 2 is a diagram illustrating an example of a network architecture in a 5G NR system.
Figure 3 is a block diagram to specifically explain the 5G NR system.
Figure 4 shows functional division between NG-RAN and 5GC, according to an embodiment of the present disclosure.
Figure 5 is a diagram for explaining an access and mobility management function (AMF) that manages location registration of a terminal.
FIG. 6 is a diagram illustrating a process in which a first terminal onboard a UAM device forms a service session with the UAM AF.
Figure 7 is a diagram for explaining a method of setting the first TAL for UAM service for the first terminal.
Figure 8 is a diagram for explaining a method of setting a TAL when the UAM service for the first terminal is terminated.
Figures 9, 10, and 11 are flowcharts to explain a method of setting a first TAL for a UAM service for a first terminal.
Figure 12 is a diagram for explaining devices that set up the first TAL for UAM service.

In the following description and accompanying drawings, detailed descriptions of known functions or configurations that may obscure the gist of the present invention are omitted. Additionally, it should be noted that the same components throughout the drawings are indicated by the same reference numerals whenever possible.

Terms or words used in the following description and drawings should not be construed as limited to their usual or dictionary meanings, and the inventor may appropriately define the concept of the term to explain his or her invention in the best way. It must be interpreted with meaning and concept consistent with the technical idea of the present invention based on the principle that it is. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent the entire technical idea of the present invention, so at the time of filing the present application, various alternatives may be used to replace them. It should be understood that equivalents and variations may exist.

In addition, terms containing ordinal numbers, such as first, second, etc., are used to describe various components, and are used only for the purpose of distinguishing one component from other components and to limit the components. Not used. For example, the second component may be referred to as the first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as the second component.

Additionally, the terms used in this specification are only used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In addition, terms such as "comprise" or "have" used in the specification are intended to indicate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are intended to indicate the presence of one or more of the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification. It should be understood that this does not exclude in advance the presence or addition of other features, numbers, steps, operations, components, parts, or combinations thereof.

Additionally, terms such as “unit,” “unit,” and “module” used in the specification refer to a unit that processes at least one function or operation, and may be implemented as hardware, software, or a combination of hardware and software. In addition, the terms "a or an", "one", "the", and similar related terms are used in the context of describing the invention (particularly in the context of the claims below) as used herein. It may be used in both singular and plural terms, unless indicated otherwise or clearly contradicted by context.

In addition to the terms described above, specific terms used in the following description are provided to aid understanding of the present invention, and the use of these specific terms may be changed to other forms without departing from the technical spirit of the present invention.

Additionally, embodiments within the scope of the present invention include computer-readable media having or transmitting computer-executable instructions or data structures stored on the computer-readable media. Such computer-readable media may be any available media that can be accessed by a general-purpose or special-purpose computer system. By way of example, such computer-readable media may include RAM, ROM, EPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage, or in the form of computer-executable instructions, computer-readable instructions or data structures. It may be used to store or transmit certain program code means, and may include, but is not limited to, a physical storage medium such as any other medium that can be accessed by a general purpose or special purpose computer system. .

In addition, the present invention is applicable to personal computers, laptop computers, handheld devices, multiprocessor systems, microprocessor-based or programmable consumer electronics, network PCs, minicomputers, mainframe computers, mobile phones, PDAs, and pagers. It can be implemented in a network computing environment with various types of computer system configurations including (pager) and the like. The invention may also be practiced in distributed system environments where tasks are performed by both local and remote computer systems that are linked over a network via wired data links, wireless data links, or a combination of wired and wireless data links. In a distributed system environment, program modules may be located in local and remote memory storage devices.

Additionally, it will be understood that each block of the processing flow diagrams and combinations of the flow diagram diagrams may be performed by computer program instructions. These computer program instructions can be mounted on a processor of a general-purpose computer, special-purpose computer, or other programmable data processing equipment, so that the instructions performed through the processor of the computer or other programmable data processing equipment are described in the flow chart block(s). It creates the means to perform functions. These computer program instructions may also be stored in computer-usable or computer-readable memory that can be directed to a computer or other programmable data processing equipment to implement a function in a particular manner, so that the computer-usable or computer-readable memory It is also possible to produce manufactured items containing instruction means that perform the functions described in the flowchart block(s). Computer program instructions can also be mounted on a computer or other programmable data processing equipment, so that a series of operational steps are performed on the computer or other programmable data processing equipment to create a process that is executed by the computer, thereby generating a process that is executed by the computer or other programmable data processing equipment. Instructions that perform processing equipment may also provide steps for executing the functions described in the flow diagram block(s).

Additionally, each block may represent a module, segment, or portion of code that includes one or more executable instructions for executing specified logical function(s). Additionally, it should be noted that in some alternative execution examples it is possible for the functions mentioned in the blocks to occur out of order. For example, it is possible for two blocks shown in succession to be performed substantially at the same time, or it is possible for the blocks to be performed in reverse order depending on the corresponding function.

In describing the embodiments of the present disclosure in detail, the main focus will be on the example of a specific system, but the main point claimed in the present specification is that the scope disclosed in the present specification is applicable to other communication systems and services with similar technical background. It can be applied within a range that does not deviate significantly, and this can be done at the discretion of a person with skilled technical knowledge in the relevant technical field.

In various embodiments of the present invention, “/” and “,” should be interpreted as indicating “and/or.” For example, “A/B” can mean “A and/or B.” Furthermore, “A, B” may mean “A and/or B.” Furthermore, “A/B/C” may mean “at least one of A, B and/or C.” Furthermore, “A, B, C” may mean “at least one of A, B and/or C.”

In various embodiments of the present disclosure, “or” should be interpreted as indicating “and/or.” For example, “A or B” may include “only A,” “only B,” and/or “both A and B.” In other words, “or” should be interpreted as indicating “additionally or alternatively.”

The following technologies include code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), and single carrier frequency division multiple access (SC-FDMA). It can be used in various wireless communication systems. CDMA can be implemented with wireless technologies such as universal terrestrial radio access (UTRA) or CDMA2000. TDMA may be implemented with wireless technologies such as global system for mobile communications (GSM)/general packet radio service (GPRS)/enhanced data rates for GSM evolution (EDGE). OFDMA can be implemented with wireless technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, evolved UTRA (E-UTRA), etc. IEEE 802.16m is an evolution of IEEE 802.16e and provides backward compatibility with systems based on IEEE 802.16e. UTRA is part of the universal mobile telecommunications system (UMTS). 3GPP (3rd generation partnership project) LTE (long term evolution) is a part of E-UMTS (evolved UMTS) that uses E-UTRA (evolved-UMTS terrestrial radio access), employing OFDMA in the downlink and SC in the uplink. -Adopt FDMA. LTE-A (advanced) is the evolution of 3GPP LTE.

5G NR is a successor technology to LTE-A and is a new clean-slate mobile communication system with characteristics such as high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, including low-frequency bands below 1 GHz, mid-frequency bands between 1 GHz and 10 GHz, and high-frequency (millimeter wave) bands above 24 GHz.

For clarity of explanation, LTE-A or 5G NR is mainly described, but the technical idea according to an embodiment of the present disclosure is not limited thereto.

Looking at 5G, a communication field to which the present invention can be typically applied, the three main requirements areas of 5G are (1) improved mobile broadband (eMBB) area, (2) large amount of machine type communication ( It includes (3) massive Machine Type Communication (mMTC) area, (3) Ultra-reliable and Low Latency Communications (URLLC) area, and (4) UAM Urban Aerial Mobility) area.

Some use cases may require multiple areas for optimization, while others may focus on just one Key Performance Indicator (KPI). 5G supports these diverse use cases in a flexible and reliable way.

eMBB goes far beyond basic mobile Internet access and covers rich interactive tasks, media and entertainment applications in the cloud or augmented reality. Data is one of the key drivers of 5G, and we may not see dedicated voice services for the first time in the 5G era. In 5G, voice is expected to be processed simply as an application using the data connection provided by the communication system. The main reasons for the increased traffic volume are the increase in content size and the number of applications requiring high data rates. Streaming services (audio and video), interactive video and mobile Internet connections will become more prevalent as more devices are connected to the Internet. Many of these applications require always-on connectivity to push real-time information and notifications to users. Cloud storage and applications are rapidly increasing mobile communication platforms, and this can apply to both work and entertainment. And cloud storage is a particular use case driving growth in uplink data rates. 5G will also be used for remote work in the cloud and will require much lower end-to-end latency to maintain a good user experience when tactile interfaces are used. Entertainment, for example, cloud gaming and video streaming are other key factors driving increased demand for mobile broadband capabilities. Entertainment is essential on smartphones and tablets anywhere, including high mobility environments such as trains, cars and airplanes. Another use case is augmented reality for entertainment and information retrieval. Here, augmented reality requires very low latency and instantaneous amounts of data.

Additionally, one of the most anticipated 5G use cases concerns the ability to seamlessly connect embedded sensors in any field, or mMTC. By 2020, the number of potential IoT devices is expected to reach 20.4 billion. Industrial IoT is one area where 5G will play a key role in enabling smart cities, asset tracking, smart utilities, agriculture and security infrastructure.

URLLC includes new services that will transform industries through ultra-reliable/available low-latency links, such as remote control of critical infrastructure and self-driving vehicles. Levels of reliability and latency are essential for smart grid control, industrial automation, robotics, and drone control and coordination.

5G can complement fiber-to-the-home (FTTH) and cable-based broadband (or DOCSIS) as a means of delivering streams rated at hundreds of megabits per second to gigabits per second. These high speeds are required to deliver TV at resolutions above 4K (6K, 8K and beyond) as well as virtual and augmented reality. Virtual Reality (VR) and Augmented Reality (AR) applications include nearly immersive sporting events. Certain applications may require special network settings. For example, for VR games, gaming companies may need to integrate core servers with a network operator's edge network servers to minimize latency.

Automotive is expected to be an important new driver for 5G, with many use cases for mobile communications for vehicles. For example, entertainment for passengers requires simultaneous, high capacity and high mobility mobile broadband. That's because future users will continue to expect high-quality connections regardless of their location and speed. Another use case in the automotive sector is augmented reality dashboards. It identifies objects in the dark and superimposes information telling the driver about the object's distance and movement on top of what the driver is seeing through the front window. In the future, wireless modules will enable communication between vehicles, information exchange between vehicles and supporting infrastructure, and information exchange between cars and other connected devices (eg, devices accompanied by pedestrians). Safety systems can reduce the risk of accidents by guiding drivers through alternative courses of action to help them drive safer. The next step will be remotely controlled or self-driven vehicles. This requires highly reliable and very fast communication between different self-driving vehicles and between cars and infrastructure. In the future, self-driving vehicles will perform all driving activities, leaving drivers to focus only on traffic abnormalities that the vehicles themselves cannot discern. The technical requirements of self-driving vehicles call for ultra-low latency and ultra-high reliability, increasing traffic safety to levels unachievable by humans.

FIG. 2 is a diagram illustrating an example of a network architecture in a 5G NR system.

The network of the NR system largely consists of the next generation radio access network (NG-RAN) and the next generation core (NGC) network. NGC is also referred to as 5GC.

Referring to FIG. 2, NG-RAN terminates user plane protocols (e.g., SDAP, PDCP, RLC, MAC, PHY) and control plane protocols (e.g., RRC, PDCP, RLC, MAC, PHY) for the UE. It consists of gNBs provided. gNBs are interconnected through the Xn interface. gNB is connected to NGC through the NG interface. For example, the gNB is a core network node with an Access and Mobility Management function (AMF) through the N2 interface, which is one of the interfaces between the gNB and NGC, and N3, another one of the interfaces between the gNB and NGC. The interface is connected to a core network node with a user plane function (UPF). AMF and UPF may each be implemented by different core network devices or by one core network device. In RAN, transmission/reception of signals between BS and UE is performed through a wireless interface. For example, in RAN, transmission/reception of signals between BS and UE is performed through physical resources (eg, radio frequency (RF)). In contrast, the transmission/reception of signals between gNB and network functions (e.g., AMF, UPF) in the core network is not a wireless interface, but a physical connection (e.g., optical cable) or logical connection between core network functions. It can be performed through .

The wireless protocol stack in the 3GPP system is largely divided into a protocol stack for the user plane and a protocol stack for the control plane. The user plane is also called the data plane and is used to carry user traffic (i.e. user data). The user plane processes user data such as voice and data. In contrast, the control plane processes control signaling rather than user data between UEs or between UEs and network nodes. In the LTE system, the protocol stack for the user plane in the NR system includes PDCP, RLC, MAC, and PHY, and in the NR system, the protocol stack for the user plane includes SDAP, PDCP, RLC, MAC, and PHY. The protocol stack for the control plane in the LTE system and NR system includes PDCP, RLC, and MAC terminated at the BS at the network end, as well as radio resource control (RRC), which is a layer above PDCP. The upper layer of RRC includes a non-access stratum (NAS) control protocol. At the network end, the NAS protocol ends in the access and mobility management function (AMF) of the core network and performs mobility management and bearer management. RRC supports delivery of NAS signaling, efficiently manages wireless resources, and performs required functions. For example, RRC supports the following functions: broadcasting of system information; Establishment, maintenance and release of RRC connection between UE and BS; Establishment, establishment, maintenance and release of radio bearers; UE measurement reporting and control of reporting; detection and recovery of wireless link failures; NAS message transfer to/from the UE's NAS.

In this specification, the RRC message/signaling by or from the BS is the RRC message/signaling sent from the RRC layer of the BS to the RRC layer of the UE. The UE is configured or operates based on an information element (IE), which is a parameter(s) or a set of parameter(s) included in the RRC message/signaling from the BS.

Figure 3 is a block diagram to specifically explain the 5G NR system.

Referring to Figure 3, the 5G system may be composed of a terminal 100, a base station 110, and a 5G core network (120, hereinafter referred to as 5GC to 5G Core Network). 5G core network (120) is AMF (121), SMF (122), PCF (123), UDM (124), UPF (125), NSSF (126), NRF (127), SCP (128), NEF (129) , UDR (130), BSF (131), etc. may be composed of network functions (hereinafter used interchangeably with NF). Here, the network function may mean a network entity (hereinafter used interchangeably with NE) and network resources. The base station 110 may include NGRAN (Next Generation-Radio Access Network, hereinafter referred to as 5G-RAN, used interchangeably with RAN), E-UTRAN, etc. The terminal (100, User Equipment, Terminal, UE) can access the 5G core network 120 through the base station 110.

Specifically, AMF (121, Access and Mobility management Function) may be a network function that manages wireless network access and mobility for the terminal.

SMF (122, Session Management Function) may be a network function that manages the Packet Data Network connection provided to the terminal. A Packet Data Network connection may be referred to as a PDU (Protocol Data Unit) Session. PDU session information may include Quality of Service (QoS) information, charging information, or information about packet processing.

PCF (123, Policy Control Function) may be a network function that applies the mobile communication service provider's service policy, charging policy, and PDU session policy to the terminal.

UPF (125, User Plane Function) can perform the role of a gateway that delivers packets transmitted and received by the terminal, and can be a network function controlled by the SMF. The UPF is connected to the Data Network (DN) and can play the role of transmitting the uplink data packet generated by the terminal to the external data network through the 5G system. In addition, UPF can play the role of delivering downlink data packets generated by an external data network to the terminal through the 5G system. For example, UPF is connected to a data network connected to the Internet, so data packets sent from the terminal can be routed to the Internet, and data packets sent from the Internet can be routed to the terminal. UDM (124, Unified Data Management) may be a network function that stores and manages information about subscribers.

NEF (129, Network Exposure Function) is a network function that allows access to information that manages the terminal in a 5G network, and includes subscription to the terminal's Mobility Management event, subscription to the terminal's Session Management event, and request for session-related information. , A network that is connected to 5G core network NFs and delivers information about the terminal to NFs or reports information about the terminal to the outside through setting the charging information of the terminal and requesting changes to the PDU session policy for the terminal. It could be a function.

UDR (130, Unified Data Repository) may be a network function that stores and manages data. For example, UDR can store terminal subscription information and provide terminal subscription information to UDM. UDR stores operator policy information and can provide operator policy information to PCF. UDR stores information related to network service exposure and can provide information related to network service exposure to NEF.

NSSF (126, Network Slice Selection Function) may be a network function that determines network slices available to the terminal and network slice instances constituting these network slices. Meanwhile, each NF defines the services it provides, and the services provided by the NF may be referred to as Npcf, Nsmf, Namf, Nnef services, etc. For example, when AMF delivers a session-related message to SMF, AMF can use a service (or API) called Nsmf_PDUSession_CreateSMContext.

AF (140, 200, Application Function) may be a network function that can use services and functions provided by the 5G network. Also, AF can be an application server. More specifically, the AF 200 can communicate with the NF constituting the 5G core network 120 through the NEF 129. Alternatively, the AF (140) can communicate directly with the NF that makes up the 5G core network without going through the NEF (129). Additionally, the AFs 140 and 200 may be located inside the 5G core network or may be located in an external network (eg, an Unmanned Aerial System Traffic Management (UTM) server for providing UAM services).

The terminal 100 can access the AMF 121 through the base station 110 and exchange control plane signaling messages with the 5G core network. Additionally, the terminal 100 can access the UPF 125 through the base station 110 and exchange user plane data with the data network. The Application Server that provides application layer services to the terminal may be referred to as AF when exchanging control plane signaling messages with the 5G core network, and may be referred to as DN (Data Network) when exchanging user plane data with the terminal. . Additionally, AF and DN may be used interchangeably as names referring to Application Server.

Figure 4 shows functional division between NG-RAN and 5GC, according to an embodiment of the present disclosure.

Referring to FIG. 4, gNB performs inter-cell radio resource management (Inter Cell RRM), radio bearer management (RB control), connection mobility control, radio admission control, and measurement configuration and provision. Functions such as (Measurement configuration & Provision) and dynamic resource allocation can be provided. AMF can provide functions such as NAS (Non Access Stratum) security and idle state mobility processing. UPF can provide functions such as mobility anchoring and PDU (Protocol Data Unit) processing. SMF (Session Management Function) can provide functions such as terminal Internet Protocol (IP) address allocation and PDU session control.

Figure 5 is a diagram for explaining an access and mobility management function (AMF) that manages location registration of a terminal.

The AMF (121) provides functions for terminal access and mobility management, and each terminal can be basically connected to one AMF. Specifically, the AMF 130 provides signaling between core network nodes for mobility between 3 ^rd generation partnership project (3GPP) access networks, and a CP interface (N2 interface) between radio access networks (e.g., 5G radio access network (RAN)). ), NAS signaling with the terminal 101, identification of the SMF, and provision of delivery of a session management message between the terminal and the SMF may be performed. Some or all of the functions of AMF can be supported within a single instance of AMF.

AMF (access and mobility management function) is a network entity that manages the mobility of the terminal. AMF can identify the location of a terminal based on a tracking area (TA), which is a set of one or more cells. In the case of a radio resource control (RRC) connection state in which the terminal can access the AMF, the AMF can know the location of the terminal on a cell basis. In the case of the RRC inactive state of the terminal introduced in NR (new radio), the core network recognizes that the core and the terminal are connected, and since RAN (radio access network) paging is performed, AMF You can know the location of the terminal. However, when the terminal is in the RRC idle state, the AMF only knows the registered TA and does not know the location of the terminal, so the AMF must transmit a paging message to connect to the terminal.

When the AMF 121 is in an idle state (a state not communicating), it recognizes the location of the terminal in units of a tracking area (TA). That is, the MME 110 can know which TA the terminal in the idle state is located through the Tracking Area Update (TAU) received from the terminal. Here, whenever the TA or TAL changes, the terminal transmits the changed TA information to the AMF 121 using a TAU message, and when connecting to the LTE network or receiving a response to the TAU message, the TAL (Tracking Area List, hereinafter referred to as 'TAL') is provided by AMF (121). As such, AMF 121 can manage the TAL as described above. For example, AMF (121) can manage/operate TAL including TA1 (110) and TA2 (120) for the terminal (100).

Base stations 41, 42, 43, 44, 45, and 46 are network infrastructure that provides wireless connectivity. Base stations 41, 42, 43, 44, 45, and 46 have coverage defined as a certain geographic area based on the distance over which signals can be transmitted. Hereinafter, the term 'coverage' used may refer to a service coverage area in the base stations 41, 42, 43, 44, 45, and 46. The base stations 41, 42, 43, 44, 45, and 46 may cover one cell or multiple cells. Here, multiple cells can be divided by the frequency they support and the area of the sector they cover. For example, as shown in FIG. 5, the base stations 41, 42, 43, 44, 45, and 46 may be divided into TA 1 and TA 2.

The terminal 101 can transmit or receive messages through the AMF 130 and NAS signaling. NAS signaling may refer to a functional layer for exchanging signaling and traffic messages between a terminal and the core network in the 5GS (5G system) protocol stack. In the NAS layer, the terminal 101 can transmit a message to the AMF or receive a message from the AMF via the base station. At this time, the base station may transmit the message to the terminal 101 or the AMF without interpreting it. Mobility of the terminal 101 may be supported through NAS signaling.

Meanwhile, two signaling loads may exist in mobility management of terminals used in the network. The first is the TAU load, where the terminal reports its location to the AMF. For example, if the number of cells included in the TA is small, the energy consumption of the terminal may be high due to frequent TAU. To prevent such frequent TAU, AMF can set TA and/or TAC by grouping multiple base stations as described above, and can set TAL by grouping multiple TA and/or TAC. In this case, the terminal can perform location registration only when the TAL is changed, thereby reducing the load of location registration.

The second is the paging load transmitted by AMF to the terminal. For example, if the number of base stations included in the TA is large, the number of paging messages (e.g., S1 application protocol (S1AP) or NG application protocol (NGAP)) increases, consuming a lot of network resources. In other words, TAU load and paging load are affected by the TA configuration and are in a trade-off relationship. Therefore, the number of base stations configured within the TAL needs to be defined considering the TAU load and paging load.

Meanwhile, as described above, AMF is described as a network entity that manages the mobility of the terminal, but a mobility management entity (MME) may be used instead of AMF. That is, the AMF operations of this disclosure described later may be performed by the MME.

FIG. 6 is a diagram illustrating a process in which a first terminal onboard a UAM device forms a service session with the UAM AF.

Referring to FIG. 6, when boarding the UAM device 102, the first terminal 100 may perform an authentication procedure related to the UAM service and the UAM terminal 103 included in the UAM device.

For example, the first terminal 100 may perform an authentication procedure with the UAM terminal 103 using an authentication procedure through an application related to the UAM service. Alternatively, the first terminal 100 may perform an authentication procedure through an application with the UAM terminal 103 using proximity communication such as NFC or Bluetooth. Alternatively, the first terminal 100 may perform an authentication procedure through an application with the UAM terminal 103 using Wifi or Bluetooth-based tethering or a hotspot. Alternatively, the first terminal 100 may form a sidelink (or D2D communication) based on LTE or 5G communication with the UAM terminal 103 and perform an authentication procedure through an application through the sidelink. On the other hand, if the first terminal 100 can perform the authentication process through an application for the UAM terminal 103 through a communication method other than the described communication method, the authentication procedure through the application can be performed by the above-mentioned example. The method is not limited.

The first terminal 100 can form/register a service session related to the provision of UAM service with the UAM AF 200 through the above-described authentication procedure. The first terminal 100 can receive UAM service through the service session. At this time, the first terminal 100 can move to the destination at a fairly high speed in the air above a certain altitude through the UAM device 102.

UAM AF 200 may manage the UAM path (or at least one path) along which the UAM device 102 moves. The UAM paths may be managed for each UAM device 102, and may include a transit route (or at least one transit path) for each UAM device 102. UAM AF 200 may identify/verify UAM path information for the UAM path related to the first terminal 100 through registration/formation of a service session with the first terminal 100. Here, the UAM AF 200 may be an Unmanned Aerial System Traffic Management (UTM) server that manages/operates the UAM service as an external AF. UAM AF (200) may transmit a request message or a first message to request an update of UAM service information for the first terminal (100) to the network (120) or NEF (121).

Meanwhile, the first terminal 100 that receives the UAM service can move at a relatively faster speed than a typical terrestrial terminal. When the first terminal 100 receiving the UAM service performs location registration based on the TAL corresponding to the existing ground terminal, the first terminal 100 can perform the location registration procedure at a fairly high frequency due to relatively fast movement. . In this case, as described with reference to FIG. 5, due to the high frequency of location registration of the first terminal 100, the TAU load of the first terminal 100 may increase and rapid battery consumption may occur. Additionally, there is a problem in which overload occurs in the network 120 and/base station 40.

In order to solve this problem, the UAM AF 200 transmits a message to the network 120 to set a first TAL suitable for the UAM service for the first terminal 100 receiving the UAM service, and Accordingly, the method for providing the newly set first TAL to the first terminal 100 will be described in detail later. Here, the first TAL may be a TAL established based on the UAM path according to the UAM service rather than a TAL established based on the location of the existing terminal.

Figure 7 is a diagram for explaining a method of setting the first TAL for UAM service for the first terminal.

Referring to FIG. 7, the first terminal can register in the network and form a PDU session (S71). In this case, the first terminal may receive a TAL from the network and perform TAU and/or location registration based on the provided TAL.

Next, the UAM AF can register/form a service session with the first terminal when the first terminal boards the UAM device (S72). For example, when the first terminal boards a UAM device, the UAM AF and the first terminal send a UE-AF service session registration request and/or a UE-AF service session registration response message. You can register/form the service session by exchanging . The UAM AF may generate an AF request message in response to registration/formation of the service session.

The UAM AF may deliver the request message to the network (S73). The UAM AF may request a service change for the first terminal through the request message. For example, the UAM AF may send the request message to the NEF of the network to request a service change for the first terminal. The request message may be a message defined to request a change or update of service information for each terminal. For example, the request message may be defined as a Nnef_UEParameter_Update_Request type message.

At this time, the UAM AF may further include UAM path information related to the UAM service provided to the first terminal in the request message in order to request a change/update of the TAL for the first terminal. That is, the UAM AF may transmit the request message including the UAM path information to the NEF to trigger the network to change the TAL for the first terminal to a first TAL suitable for the UAM service.

The NEF may deliver a response message to the UAM AF notifying that delivery of UAM path information to the UDM is complete (S74). Alternatively, when the update of service information for the first terminal based on the request message including the UAM path information in the UDM included in the network is completed, the NEF sends the response message indicating completion of update of the service information. can be delivered to the UAM AF. Here, the response message may be a message defined to notify completion of service information update for each terminal. For example, the response message may be defined as a Nnef_UEParameter_Update_Reponse type message.

Next, the UDM may transmit information about the newly configured first TAL based on the UAM path information to the AMF included in the network (S75). Specifically, the UDM newly configures the first TAL based on the received UAM path information, and registers the first TAL as the TAL for the first terminal (or TAL for the subscriber of the first terminal) /Can be updated. For example, the UDM may register/update the newly configured first TAL as the TAL for the first terminal based on the UAM path information and location information of base stations. The UDM may register/update the newly configured first TAL to include base stations that can accommodate all paths in the UAM path information as the TAL for the first terminal. Alternatively, the UDM may register/update the newly configured first TAL to include TAs that can accommodate all of the paths (or at least one path) included in the UAM path information as the TAL for the first terminal. there is.

The AMF may update the UE context for the first terminal based on the first TAL received from the UDM. The AMF may deliver the first TAL to the first terminal (S76).

Next, the first terminal may perform an operation related to location registration based on the first TAL. Additionally, the first terminal may perform an operation related to location registration based on the first TAL while the service session for the UAM service is maintained. For example, when the first TAL changes, the first terminal may perform an operation related to location registration by transmitting a TAU message for location registration to the network.

Meanwhile, since the first TAL includes base stations and/or TAs configured to accommodate all paths (or at least one path) included in the UAM path information, the first terminal uses the UAM service. No change in the first TAL occurs during the process, and transmission of the TAU message may not be performed.

As described above, when forming a service session for UAM service with UAM AF, the first terminal receives (with the help of the UAM AF) a first TAL for UAM service from the network (e.g., TAL for UAM service) can be set, and since the first TAL is set to correspond to UAM path information, frequent location registration operations can be minimized even if it moves at a high speed. By minimizing the location registration operation for the first terminal using the UAM service, the TAU load and paging load between the first terminal and the network can be minimized, and battery consumption of the first terminal can be minimized.

Figure 8 is a diagram for explaining a method of setting a TAL when the UAM service for the first terminal is terminated.

Referring to FIG. 8, the first terminal may terminate and/or de-register a service session with the UAM AF (or first server) (S81). For example, when the first terminal reaches the destination through the UAM device, the first terminal can get off the UAM device and/or terminate the service session.

The UAM AF may deliver a message notifying that the UAM service with the first terminal is terminated to the network (or NEF included in the network) (S82). In this case, the NEF delivers information about termination of the service (e.g., information notifying deletion of a service session of the UAM service for the first terminal) to the UDM included in the network, and the UDM transmits information about the termination of the service to the UDM included in the network. 1 Based on the location information of the terminal (e.g., the destination where the UAM service is terminated), a second TAL (e.g., TAL for general subscribers), which is a TAL corresponding to the terrestrial terminals, can be configured. Here, the message may be an Nnef_UEParameter_Delete_Request type message notifying the termination of service for each terminal.

At this time, the NEF may transmit a response message to the UAM AF indicating that the update of service information for the first terminal based on the message has been completed (e.g., deletion of the service session of the UAM service for the first terminal). There is (S83). Here, the response message may be an Nnef_UEParameter_Delete_Response type message.

The UDM may register and update the second TAL as the TAL for the first terminal (or the TAL of the subscriber corresponding to the first terminal). Here, the second TAL may be a TAL created based on the location of the first terminal, similar to a general terminal on the ground. The UDM may transmit information about the second TAL, which is the updated and registered TAL for the first terminal, to the AMF (S84).

The AMF may update the UE context for the first terminal (or for the subscriber) based on the second TAL and deliver information about the second TAL to the first terminal (S85).

The first terminal may perform an operation related to location registration based on the second TAL transmitted from the AMF.

Meanwhile, for convenience of explanation, the operations of the UAM AF, the network, and the first terminal are described together in FIGS. 7 and 8. However, in the present invention, the UAM AF, the network, and the first terminal each use the first TAL related to the UAM service. It may also include inventions for each operation of receiving settings or restoring to the second TAL, and is not limited to the entire operation linked between the UAM AF, the network, and the first terminal.

Below, we will describe in detail how the UAM AF, the network, and the first terminal each perform an operation to set the first TAL related to the UAM service or restore to the second TAL.

Figures 9, 10, and 11 are flowcharts to explain a method of setting a first TAL for a UAM service for a first terminal.

Referring to FIG. 9, the first terminal can register in the network and form a PDU session (S91). The first terminal that established the PDU session can board the UAM device to use the UAM service. The first terminal may form a service session with the UAM AF for provision of the UAM service (S93). The first terminal may receive an updated or newly configured first TAL from the network in response to the establishment of the service session (S95). As described above, the first TAL may be a TAL newly configured in the network based on UAM path information through which the first terminal will move through the UAM device. For example, the first TAL may be newly configured and/or set based on the location of base stations and the location relationship of the path included in the UAM path information. Alternatively, the first TAL may be newly configured and/or set to include TAs and/or base stations that can accommodate all of the paths (or at least one path) included in the UAM path information. The first terminal may perform an operation related to location registration based on the received first TAL.

Referring to FIG. 10, the first server (or UAM AF) may support UAM service for the first terminal. The first server may form a service session (first session) related to the UAM service with the first terminal (S101). The first server may deliver a first message to the network in response to establishment of the first session (103). The first server transmits the first message further containing UAM path information related to the first terminal to the network so that the network can set the TAL for the first terminal as a first TAL suitable for the UAM service. It can be triggered to do so. Here, the first message is a request message requesting a service change to the NEF included in the network, and may be a newly defined type of message that can request a service change for each terminal. In this case, the first server may specify the first terminal through the first message and request setup as the first TAL. Upon delivery of the first message, the first server may receive a response message notifying that the service change for the first terminal is completed or that UAM path information for the first terminal has been successfully delivered (S105 ).

Referring to FIG. 11, the network may receive the first message requesting a change in service information from the first server, which is the UAM server (S111). Here, the first message may have a newly defined message type so that an update of service information can be requested for each terminal, and the network sends the first terminal for which a change in the service information has been requested based on the first message. can be identified. The network may newly configure or set a first TAL for the first terminal when the first message includes UAM path information related to the UAM service (S113). That is, the network may newly configure a first TAL, which is a TAL suitable for UAM service, for the first terminal based on the inclusion of UAM path information in the first message. Specifically, the network may set the first TAL based on the location of the path (or at least one path) included in the UAM path information and the positional relationship between base stations. For example, the network may configure/configure the first TAL to include base stations and/or TAs that can accommodate all of the paths (or at least one path) included in the UAM path information. Alternatively, the network may set/configure the TAL for the first terminal identified based on the first message as the first TAL. The network may transmit information about the first TAL to the first terminal (S115). In this case, the network may receive a message related to location registration from the first terminal based on the first TAL.

Alternatively, the network may include NEF, UDM, and AMF. The NEF may receive the first message requesting update of service information from the first server. The NEF may deliver the UAM path information to the UDM when the first message includes UAM path information. When the UDM receives the UAM path information from the NEF, it can newly set up a first TAL that can accommodate the path (or at least one path) included in the UAM path information. For example, the UDM may newly configure the first TAL to include base stations and/or TAs with coverage covering the path (or at least one path). The UDM may register the first TAL as a TAL for the subscriber corresponding to the first terminal and transmit the first TAL to the AMF. The AMF may update the UE context based on the transmitted first TAL. The AMF may deliver the first TAL to the first terminal. In this case, the AMF may expect the first terminal to perform an operation related to location registration based on the first TAL while maintaining a service session related to the UAM service.

Figure 12 is a diagram for explaining devices that set up the first TAL for UAM service.

The first terminal 100 includes one or more processors 102 and one or more memories 104, and may additionally include one or more transceivers 106 and/or one or more antennas 108. Processor 102 controls memory 104, and/or transceiver 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein. For example, the processor 102 may process information in the memory 104 to generate first information/signal and then transmit a wireless signal including the first information/signal through the transceiver 106. Additionally, the processor 102 may receive a wireless signal including the second information/signal through the transceiver 106 and then store information obtained from signal processing of the second information/signal in the memory 104. The memory 104 may be connected to the processor 102 and may store various information related to the operation of the processor 102. For example, memory 104 may perform some or all of the processes controlled by processor 102 or instructions for performing the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein. Software code containing them can be stored. Here, the processor 102 and memory 104 may be part of a communication modem/circuit/chipset designed to implement wireless communication technology (eg, LTE, NR). Transceiver 106 may be coupled to processor 102 and may transmit and/or receive wireless signals via one or more antennas 108. Transceiver 106 may include a transmitter and/or receiver. The transceiver 106 can be used interchangeably with an RF (Radio Frequency) transceiver. In the present invention, a wireless device may mean a communication modem/circuit/chipset.

According to one example, the first terminal 100 or the processor 102 may perform operations related to the embodiments described in FIGS. 6 to 11. Specifically, the processor 102 controls the RF transceiver to form a first session related to the UAM service, and configures a first TAL based on UAM path information related to the UAM service in response to the establishment of the first session. can be delivered.

The second device 200 includes one or more processors 202, one or more memories 204, and may further include one or more transceivers 206 and/or one or more antennas 208. Here, the second device 200 may be the base station described in FIGS. 5 to 9. Processor 202 controls memory 204 and/or transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein. For example, the processor 202 may process the information in the memory 204 to generate third information/signal and then transmit a wireless signal including the third information/signal through the transceiver 206. Additionally, the processor 202 may receive a wireless signal including the fourth information/signal through the transceiver 206 and then store information obtained from signal processing of the fourth information/signal in the memory 204. The memory 204 may be connected to the processor 202 and may store various information related to the operation of the processor 202. For example, memory 204 may perform some or all of the processes controlled by processor 202 or instructions for performing the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed herein. Software code containing them can be stored. Here, the processor 202 and memory 204 may be part of a communication modem/circuit/chip designed to implement wireless communication technology (eg, LTE, NR). Transceiver 206 may be coupled to processor 202 and may transmit and/or receive wireless signals via one or more antennas 208. Transceiver 206 may include a transmitter and/or receiver. Transceiver 206 may be used interchangeably with an RF unit. In the present invention, a wireless device may mean a communication modem/circuit/chip. Here, the second device may correspond to the base station described above.

Meanwhile, the network or first server described in FIGS. 6 to 11 includes a communication interface and a processor connected to the communication interface, and information can be exchanged between the first server or the network through the communication interface. The communication interface may be an interface for transmitting and receiving information related to a backhaul link.

The network can perform the operations described in FIGS. 6 to 11. For example, a processor included in the network receives a first message requesting an update of service information for the first terminal from a first server, and determines that the first message includes UAM path information related to the UAM service. Based on this, the first TAL can be set for the first terminal. A processor included in the network may configure a first TAL configured to include base stations and/or TAs corresponding to the UAM path information. Additionally, a processor included in the network may control the communication interface unit to transmit the first TAL to the first terminal.

Alternatively, the first server may perform the operations described in FIGS. 6 to 11. For example, the processor included in the first server controls the communication interface to form a first session for the UAM service with a first terminal, and provides UAM path information related to the UAM service in response to the establishment of the first session. You can request the network to set up a TAL for the first terminal by transmitting a first message containing .

The embodiments described above may be implemented with hardware components, software components, and/or a combination of hardware components and software components. For example, the devices, methods, and components described in the embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, and a field programmable gate (FPGA). It may be implemented using one or more general-purpose or special-purpose computers, such as an array, programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions. A processing device may execute an operating system (OS) and one or more software applications that run on the operating system. Additionally, a processing device may access, store, manipulate, process, and generate data in response to the execution of software. For ease of understanding, a single processing device may be described as being used; however, those skilled in the art will understand that a processing device includes multiple processing elements and/or multiple types of processing elements. It can be seen that it may include. For example, a processing device may include a plurality of processors or one processor and one controller. Additionally, other processing configurations, such as parallel processors, are possible.

Software may include a computer program, code, instructions, or a combination of one or more of these, which may configure a processing unit to operate as desired, or may be processed independently or collectively. You can command the device. Software and/or data may be used on any type of machine, component, physical device, virtual equipment, computer storage medium or device to be interpreted by or to provide instructions or data to a processing device. , or may be permanently or temporarily embodied in a transmitted signal wave. Software may be distributed over networked computer systems and stored or executed in a distributed manner. Software and data may be stored on one or more computer-readable recording media.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., singly or in combination. Program instructions recorded on the medium may be specially designed and configured for the embodiment or may be known and available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -Includes optical media (magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

Although the embodiments have been described with limited drawings as described above, those skilled in the art can apply various technical modifications and variations based on the above. For example, the described techniques are performed in a different order than the described method, and/or components of the described system, structure, device, circuit, etc. are combined or combined in a different form than the described method, or other components are used. Alternatively, appropriate results may be achieved even if substituted or substituted by an equivalent. Therefore, other implementations, other embodiments, and equivalents of the claims also fall within the scope of the claims described below.

In this document, embodiments of the present invention have been described mainly focusing on the signal transmission and reception relationship between the terminal and the base station. This transmission and reception relationship is equally/similarly extended to signal transmission and reception between a terminal and a relay or a base station and a relay. Certain operations described in this document as being performed by the base station may, in some cases, be performed by its upper node. That is, it is obvious that in a network comprised of a plurality of network nodes including a base station, various operations performed for communication with a terminal can be performed by the base station or other network nodes other than the base station. Base station can be replaced by terms such as fixed station, Node B, eNode B (eNB), and access point. Additionally, terminal may be replaced with terms such as UE (User Equipment), MS (Mobile Station), and MSS (Mobile Subscriber Station).

Embodiments according to the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof. In the case of implementation by hardware, an embodiment of the present invention includes one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), and FPGAs ( It can be implemented by field programmable gate arrays, processors, controllers, microcontrollers, microprocessors, etc.

In the case of implementation by firmware or software, an embodiment of the present invention may be implemented in the form of a module, procedure, function, etc. that performs the functions or operations described above. Software code can be stored in a memory unit and run by a processor. The memory unit is located inside or outside the processor and can exchange data with the processor through various known means.

It is obvious to those skilled in the art that the present invention can be embodied in other specific forms without departing from the characteristics of the present invention. Accordingly, the above detailed description should not be construed as restrictive in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (26)

In a method for a network to set a first TAL (Tracking Area List) for an Urban Aerial Mobility (UAM) service for a first terminal in a wireless communication system,
Receiving a first message requesting an update of service information for the first terminal from a first server; and
Configuring a first TAL for the first terminal based on the first message including UAM path information related to the UAM service. According to paragraph 1,
The method, characterized in that the first TAL is newly set based on the UAM path information for the UAM service. According to paragraph 1,
The method, wherein the first TAL is set to include TAs (Tracking Areas) or base stations corresponding to the path included in the UAM path information. According to paragraph 1,
The method, characterized in that the UAM route information includes a route taken by the UAM device on which the first terminal rides. According to paragraph 1,
The first message is characterized in that it includes identification information of the first terminal on board the UAM device providing the UAM service. According to paragraph 1,
The method, characterized in that the first message is a terminal-specific message defined so that an update of service information can be requested for each terminal. According to paragraph 1,
The first message is delivered to a Network Exposure Function (NEF) included in the network,
The method, characterized in that the UAM path information is delivered to UDM (Unified Data Management) included in the network. According to paragraph 1,
The method further comprising delivering a second message containing information about the first TAL to the first terminal. According to clause 8,
The method, characterized in that the second message is delivered to the first terminal through an access and mobility management function (AMF) included in the network. According to paragraph 1,
The method further comprising receiving a third message indicating termination of the UAM service from the first server. According to clause 10,
Characterized in that the first TAL is updated with a second TAL based on receipt of the third message. According to paragraph 1,
A method, characterized in that the first server is a UAM AF (Application Function) that manages UAM services. In a network that sets a first TAL (Tracking Area List) for a UAM (Urban Aerial Mobility) service for a first terminal in a wireless communication system,
communication interface; and
Including a processor connected to the communication interface,
The processor controls the communication interface to receive a first message requesting an update of service information for the first terminal from a first server, based on the fact that the first message includes UAM path information of the UAM service. A network that sets the first TAL for the first terminal. According to clause 13,
A network, characterized in that the first TAL is set based on the path included in the UAM path information and the location information of the base station. According to clause 13,
The UAM path information is a network characterized in that it includes information about the path taken by the UAM device on which the first terminal rides. In a method for a first terminal to set a first TAL (Tracking Area List) for a UAM (Urban Aerial Mobility) service in a wireless communication system,
forming a first session related to the UAM service; and
A method comprising receiving a first TAL established based on UAM path information related to the UAM service in response to establishment of the first session. According to clause 16,
The method, wherein the first TAL is set based on the path included in the UAM path information and the location information of the base station. According to clause 16,
The first TAL is characterized in that it includes TA (Tracking Areas) corresponding to the path included in the UAM path information. According to clause 16,
The first session is formed with the UAM AF providing the UAM service when the first terminal boards the UAM device providing the UAM service,
The method, characterized in that the first TAL is transmitted from a network in which a PDU session is established. According to clause 16,
The method further comprising receiving a second TAL from the network and updating the first TAL with the second TAL when leaving the UAM device providing the UAM service. In a first terminal that receives a first Tracking Area List (TAL) for a UAM (Urban Aerial Mobility) service in a wireless communication system,
RF transceiver; and
Including a processor connected to the RF transceiver,
The processor controls the RF transceiver to form a first session related to the UAM service, and receives a first TAL established based on UAM path information related to the UAM service in response to the formation of the first session. 1 terminal. In a method in which a first server supports setting a first TAL (Tracking Area List) for a first terminal for an Urban Aerial Mobility (UAM) service in a wireless communication system,
Establishing a first session for the UAM service with a first terminal; and
A method comprising requesting the network to set up a TAL for the first terminal by transmitting a first message including UAM path information related to the UAM service in response to establishment of the first session. According to clause 22,
The method, wherein the UAM route information includes information on a route through a UAM device on which the first terminal is boarded. According to clause 22,
performing a deregistration procedure for the first terminal and the first session; and
Characterized in that it includes the step of delivering a message indicating termination of the UAM service to the network. According to clause 22,
The method, characterized in that the first server is a UAM AF (Application Function) that provides the UAM service. In a first server that supports setting a first TAL (Tracking Area List) for a first terminal for an Urban Aerial Mobility (UAM) service in a wireless communication system,
communication interface; and
Including a processor connected to the communication interface,
The processor controls the communication interface to establish a first session for the UAM service with a first terminal, and transmits a first message including UAM path information related to the UAM service in response to establishment of the first session. A first server that requests the network to set a TAL for the first terminal.