Method for controlling urban aerial mobility (UAM)-dedicated cell access of terminal in wireless communication system, and apparatus therefor

Abstract

A method for performing an access procedure through a cell by a terminal supporting urban aerial mobility (UAM) according to some embodiments of the present specification may include: receiving system information including first access information of cell access permission and second access information of UAM cell access permission on the cell; on the basis of the first access information being configured as cell access prohibition, identifying whether the second access information is configured as cell access permission; and performing a cell access procedure for UAM through the cell on the basis of the second access information being configured as cell access permission.

Description

Method for controlling access to a dedicated cell for UAM (URBAN AERIAL MOBILITY) of a terminal in a wireless communication system and device therefor

[0001] This specification relates to a method for controlling access to a UAM-only cell for a terminal in a wireless communication system, and more specifically, to a technique for configuring a UAM-only cell and allowing only specific terminals to access the UAM-only cell.

[0002] Urban Air Mobility (UAM), also known as short-distance urban mobility, is an aerial vehicle that takes off from the ground, travels to its destination, and then lands there. Recently, new services based on this UAM system have emerged.

[0003] For example, UAM could provide transportation services, such as taxis, via vehicles flying hundreds of meters in the air. Such services provided via UAM in the air, rather than on the ground, could have a different wireless communication environment than those on the ground.

[0004] UAM, which is intended for use in the air, may affect ground terminals due to various signals generated by base stations, which may cause ground terminals to connect to cells configured only for terminals in the air, resulting in problems such as unnecessary handovers.

[0005] The technical problem to be achieved by this specification includes providing a method and a device for more efficiently controlling access of a UAM terminal in the air to a UAM-dedicated cell. In particular, it includes proposing a method for preventing a ground terminal from accessing a UAM-dedicated cell and a method for configuring a UAM-dedicated cell.

[0006] This specification is not limited to the technical problems described above, and other technical problems can be inferred from some embodiments of this specification.

[0007] In one aspect of the present specification, a method for a terminal supporting Urban Aerial Mobility (UAM) in a wireless communication system to perform an access procedure through a cell is provided. The method is characterized by comprising: receiving system information including first access information regarding cell access permission on the cell and second access information regarding UAM cell access permission; determining whether the second access information is set to cell access permission based on the first access information being set to cell access prohibition; and performing a cell access procedure for UAM through the cell based on the second access information being set to cell access permission.

[0008] In each aspect of the present specification, the second access information may further include searching for another cell based on the cell access being set to prohibited.

[0009] In each aspect of the present specification, it may further include performing a general cell access procedure based on the first access information being set to allow cell access.

[0010] In another aspect of the present disclosure, a method for a terminal to perform a cell access procedure in a wireless communication system is provided. The method comprises: receiving system information including first access information regarding cell access permission on the cell and second access information regarding UAM (Urban Aerial Mobility) cell access permission; performing another cell search based on the terminal not supporting UAM; and performing an access procedure through the cell based on the terminal supporting UAM, wherein the first access information is set to prohibit cell access and the second access information is set to permit cell access.

[0011] In another aspect of the present disclosure, a method is provided for a base station in a wireless communication system to support a cell-based access procedure of a terminal supporting Urban Aerial Mobility (UAM). The method comprises: transmitting system information through the cell; receiving a cell access request signal through the cell, wherein the system information includes first access information regarding cell access permission on the cell and second access information regarding UAM cell access permission, and wherein based on the cell being a UAM-only cell, the first access information is set to prohibit cell access and the second access information is set to allow cell access.

[0012] In another aspect of the present disclosure, a terminal supporting Urban Aerial Mobility (UAM) for performing an access procedure through a cell in a wireless communication system is provided. The terminal comprises: a transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations, wherein the operations may include: receiving system information including first access information regarding cell access permission on the cell and second access information regarding UAM cell access permission; determining whether the second access information is set to cell access permission based on whether the first access information is set to cell access prohibition; and performing a cell access procedure for UAM through the cell based on whether the second access information is set to cell access permission.

[0013] In each aspect of the present specification, the second access information may further include searching for another cell based on the cell access being set to prohibited.

[0014] In each aspect of the present specification, it may further include performing a general cell access procedure based on the first access information being set to allow cell access.

[0015] In another aspect of the present disclosure, a terminal for performing an access procedure through a cell in a wireless communication system is provided. The terminal comprises: a transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations, the operations comprising: receiving system information including first access information regarding cell access permission on the cell and second access information regarding UAM (Urban Aerial Mobility) cell access permission; performing another cell search based on whether the terminal supports UAM; and performing an access procedure through the cell based on whether the terminal supports UAM, wherein the first access information is set to prohibit cell access and the second access information is set to allow cell access.

[0016] In another aspect of the present disclosure, a base station is provided that supports a cell-based access procedure of a terminal supporting Urban Aerial Mobility (UAM) in a wireless communication system. The base station includes: a transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations, the operations including: transmitting system information through the cell; and receiving a cell access request signal through the cell, wherein the system information includes first access information regarding cell access permission on the cell and second access information regarding UAM cell access permission, and based on the cell being a UAM-only cell, the first access information is set to cell access prohibition and the second access information is set to cell access permission.

[0017] According to some embodiments of the present specification, when a terminal accesses a UAM-only cell, a procedure for confirming that the cell is UAM-only can be added, so that only terminals with UAM support capability can access the UAM-only cell, thereby preventing terrestrial terminals from accessing the UAM-only cell. By preventing terrestrial terminals from accessing the UAM-only cell, unnecessary handovers that would otherwise occur due to terrestrial terminals accessing the cell can be prevented.

[0018] In addition, by preventing ground terminals from accessing UAM-only cells, aerial network resources can be used efficiently, and thus the quality of service (QoS) of communication services can be improved.

[0019] The technical effects of this specification are not limited to the effects described above, and other technical effects can be inferred from some embodiments of this specification.

[0020] The drawings attached to this specification are intended to provide an understanding of the specification, illustrate various embodiments of the specification, and together with the description of the specification serve to explain the principles of the specification.

[0021] Figure 1 is a drawing for explaining UAM (Urban Aerial Mobility) service.

[0022] FIG. 2 is a diagram illustrating an example of a network architecture in a 5G NR system.

[0023] FIG. 3 is a schematic diagram illustrating a terminal on the ground and in the air attempting to connect to a UAM dedicated cell according to some embodiments of the present specification.

[0024] Figure 4 is a diagram schematically illustrating an existing procedure for a terminal to connect to a cell searched.

[0025] FIG. 5 is a diagram schematically illustrating an overall procedure for a terminal to connect to a UAM dedicated cell based on a 4G system according to some embodiments of the present specification.

[0026] FIG. 6 is a diagram schematically illustrating an overall procedure for a terminal to connect to a UAM dedicated cell based on a 5G system according to some embodiments of the present specification.

[0027] FIG. 7 is a schematic diagram illustrating a state in which information regarding UAM Cell Barred is included in a SIB1 message received by a terminal from a base station according to some embodiments of the present specification.

[0028] FIG. 8 is a diagram schematically illustrating a process for accessing a UAM-only cell by a terminal according to some embodiments of the present specification.

[0029] FIG. 9 is a diagram schematically illustrating the configuration of a base station and a terminal applied to UAM dedicated cell access according to some embodiments of the present specification.

[0030] Exemplary implementations of the present disclosure are described in detail with reference to the accompanying drawings. The detailed description set forth below, together with the accompanying drawings, is intended to illustrate exemplary implementations of the present disclosure and is not intended to represent the only possible implementations according to the present disclosure. The detailed description below includes specific details to provide a thorough understanding of the present disclosure. However, it will be apparent to one of ordinary skill in the art that the present disclosure may be practiced without these specific details.

[0031] In various examples herein, " / " and "," should be interpreted as indicating "and / or". For example, "A / B" can mean "A and / or B". Furthermore, "A, B" can mean "A and / or B". Furthermore, "A / B / C" can mean "at least one of A, B, and / or C". Furthermore, "A, B, C" can mean "at least one of A, B, and / or C".

[0032] Hereinafter, embodiments of the present specification will be described in detail one by one.

[0033] Figure 1 is a drawing for explaining UAM (Urban Aerial Mobility) service.

[0034] Referring to Figure 1, UAM service provides taxi-like transportation via vehicles flying 300 to 600 meters above the ground. It can also refer to a transportation system that uses aerial vehicles to move people within urban areas. Ground-based transportation has raised concerns about traffic congestion and noise pollution. UAM services, which provide services via aerial vehicles, are emerging as a means to address these issues.

[0035] The range of radio waves transmitted from base stations on the ground may differ from that in the air due to objects of varying heights, such as buildings and vehicles. Therefore, UAM services provided in the air may experience a different wireless communication environment than on the ground.

[0036] FIG. 2 is a diagram illustrating an example of a network architecture in a 5G (5th generation mobile communications) NR (New Radio) system.

[0037] The NR system network is largely composed of a next generation radio access network (NG-RAN) and a next generation core (NGC) network.

[0038] Referring to FIG. 2, the next-generation wireless access network is composed of base stations (gNBs) that provide termination of user plane protocols (e.g., SDAP, PDCP, RLC, MAC, PHY) and control plane protocols (e.g., RRC, PDCP, RLC, MAC, PHY) for user equipment (UE). The gNBs are interconnected via interfaces. For example, the gNB is connected to a core network node having an access and mobility management function (AMF) via an N2 interface, which is one of the interfaces between the gNB and a GC, and to a core network node having a user plane function (UPF) via an N3 interface, which is another of the interfaces between the gNB and the next-generation core network. The AMF and the UPF may be implemented by different core network devices, or may be implemented by a single core network device. In the RAN, signal transmission / reception between the gNB and the UE is performed via a wireless interface. For example, in RAN, signal transmission / reception between base stations and terminals is performed via physical resources (e.g., radio frequency (RF)). In contrast, in core networks, signal transmission / reception between base stations (gNBs) and network functions (e.g., AMF, UPF) can be performed via physical connections (e.g., optical cables) between core network nodes or logical connections between core network functions, rather than via radio interfaces.

[0039] FIG. 3 is a schematic diagram illustrating a terminal on the ground and in the air attempting to connect to a UAM dedicated cell according to some embodiments of the present specification.

[0040] UAM is an aerial vehicle that takes off from the ground, flies to its destination, and then lands there. Operating in the air, rather than on the ground, UAM can connect to specific cells and communicate with base stations while in motion.

[0041] The present invention is not limited to UAM, but can also be applied to unmanned aerial vehicles (UAVs) such as UAVs. The invention described herein will be described using UAM as an example.

[0042] A cell refers to the area covered by a single base station, and may be operated for ground terminals only, for airborne terminals only, or for both ground terminals and airborne terminals.

[0043] A terminal in the air can be controlled to connect only to a UAM-only cell (330). This is to overcome the handover problem that occurs when a terminal (320) on the ground connects to a UAM-only cell (330).

[0044] Whether a terminal can access a UAM-only cell (330) can be determined by whether the terminal has UAM support capability. The UAM support capability of the terminal may also be referred to as the terminal's UAM capability. A terminal (310) with UAM support capability may be referred to as a UAM-capable terminal. A terminal (320) that does not have UAM support capability may be referred to as a non-UAM capability-supporting terminal or a conventional terrestrial terminal.

[0045] Only terminals (310) with UAM support capability can connect to the UAM-only cell (330), and connection can be prohibited for terminals (320) that do not have UAM support capability.

[0046] Figure 4 is a diagram schematically illustrating an existing procedure for a terminal to connect to a cell searched.

[0047] Here, the cells are not limited to UAM-only cells.

[0048] Cell connection of a terminal may also be referred to as cell camping.

[0049] The cell access process for a terminal varies depending on whether the network is 4G or 5G. Drawing 4(a) illustrates the cell access process for a terminal in a 4G system, and Drawing 4(b) illustrates the cell access process for a terminal in a 5G system.

[0050] Specifically, cell connection is performed through the following process. Referring to Drawing 4(a)(b),

[0051] 1) The terminal searches for a cell to connect to through cell search (410).

[0052] 2) Receive MIB (Master Information Block) (420) and SIB1 (System information block type 1) (430) information including access information for the cell found from the base station.

[0053] 3) It is checked from MIB (420) or SIB1 information (430) whether the cell found by the terminal is a cell to which access is prohibited (Cell Barred) (440).

[0054] 4) If the cell is barred from connection, the terminal terminates the connection procedure for the cell and searches for another cell to connect to (450).

[0055] 5) If the cell is not barred from access (Not Barred), the terminal obtains other system information from MIB or SIB1 (460).

[0056] 6) Check whether the cell meets the cell selection criteria of the terminal (470).

[0057] 7) If the cell meets the cell selection criteria of the terminal, the terminal connects (camps) to the cell (480).

[0058] More specifically, the terminal searches for a cell expected to be accessible within a supportable frequency range (410). The terminal may transmit a cell access request signal to the base station. For example, the cell access request signal may be a Random Access Channel (RACH) signal.

[0059] When a cell is found, the base station receives MIB (Master Information Block) (420) and SIB1 (System Information Block Type 1) (430) messages. The MIB contains the most basic parameters required for a terminal to access a cell. SIB1 contains information related to the terminal's cell access. The MIB and SIB1 can also be considered system information.

[0060] Whether the cell searched by the terminal is an accessible cell can be confirmed through the Cell Barred information included in the MIB or SIB1. In the case of a 4G network, this can be confirmed by receiving Cell Barred information through SIB1 as shown in the drawing (a), and in the case of a 5G network, this can be confirmed by receiving Cell Barred information through the MIB as shown in the drawing (b). Cell Barred information can include access prohibition information (Barred) that prohibits cell access and access permission information (Not Barred). If there is no information, it can be regarded as access prohibition information (Barred).

[0061] If the Cell Barred information received by the terminal is access prohibited (Barred), access to the corresponding cell is considered to be prohibited for a certain period of time, and the terminal stops the cell access process and searches for another cell (450).

[0062] If the Cell Barred information is Access Allowed (Not Barred), the terminal obtains other system information from SIB1 (460) and checks whether the terminal satisfies the criteria for selecting a cell (470).

[0063] If the cell does not satisfy the criteria, the terminal searches for a new cell again, and if it satisfies the criteria, it completes the connection to the cell (480).

[0064] Depending on whether the network is 4G or 5G, the difference in the cell access process is the location where the cell barred information is determined to be a barred cell. As mentioned, in 4G, the cell barred information is determined through SIB1 (440), and in 5G, the cell barred information is determined through MIB (431) to determine whether the cell searched by the terminal is an accessible cell.

[0065] The existing process according to FIG. 4 has the problem that it is difficult to distinguish whether the cell searched by the terminal is for an airborne terminal or a ground-based terminal, and even if it is for an airborne cell, it cannot prevent access to a ground-based cell. Therefore, a method is required to distinguish whether the searched cell is a UAM-only cell for airborne terminals only, and to enable airborne terminals to access the UAM-only cell.

[0066] Here, the UAM-only cell configuration and the terminal's UAM-only cell connection method are described in detail in Figures 5 to 8.

[0067] FIG. 5 is a diagram schematically illustrating an overall procedure for a terminal to connect to a UAM dedicated cell based on a 4G system according to some embodiments of the present specification.

[0068] 1) The terminal searches for a cell to connect to through cell search (510).

[0069] 2) Receive MIB (Master Information Block) (520) and SIB1 (System information block type 1) (530) messages containing access information (Cell Barred) for a cell found from a base station.

[0070] 3) The terminal checks whether the cell is barred from access from the SIB1 (Cell Barred information) (540).

[0071] 4) If the Cell Barred information is Barred and the terminal has UAM support capability, the UAM Cell Barred information is checked from SIB1 (551).

[0072] 5) If the UAM Cell Barred information of the cell is access permitted (Not Barred), other system information is obtained from SIB1 (570).

[0073] 6) Check whether the cell meets the cell access criteria set by the terminal (580).

[0074] 7) If the cell satisfies the cell selection criteria, the terminal connects (camps) to the UAM-only cell (590).

[0075] More specifically, the terminal searches for a cell that is expected to be accessible within the supportable frequency (510).

[0076] Terminals may include both UAM-supported and non-UAM-supported general terminals. UAM-supported terminals can access UAM-only cells, as well as general cells accessible to both UAM-supported and non-UAM-supported general terminals. However, UAM-supported terminals may not be able to access cells that are only accessible to non-UAM-supported general terminals.

[0077] A cell may include a cell that can only be accessed by terminals that support UAM, a cell that can be accessed by both terminals that support UAM and general terminals that do not support UAM, and a cell that can only be accessed by general terminals that do not support UAM.

[0078] The terminal transmits a cell access request signal to the base station. For example, the cell access request signal may be a RACH (Random Access Channel) signal.

[0079] Receives MIB (Master Information Block) (520) and SIB1 (System information block type 1) (530) messages containing access information for cells found from a base station.

[0080] The above SIB1 may include only Cell Barred information, or may include both Cell Barred information and UAM Cell Barred information.

[0081] The base station can transmit both Cell Barred information and UAM Cell Barred information if the cell that the terminal is trying to connect to is a cell that only terminals that support UAM can connect to.

[0082] As another example, if the cell to which the terminal is attempting to connect is a cell to which both terminals supporting UAM and general terminals not supporting UAM can connect, the base station may transmit both Cell Barred information and UAM Cell Barred information, or may transmit only Cell Barred information.

[0083] As another example, the base station can transmit both Cell Barred information and UAM Cell Barred information if the cell to which the terminal is attempting to connect is a cell that can only be accessed by general terminals that do not support UAM.

[0084] Whether the above cell is a UAM-only cell can be determined based on Cell Barred information and UAM Barred information.

[0085] The terminal verifies the Cell Barred information of the cell found through search (540). In the case of a 4G system, Cell Barred information can be verified by receiving it via SIB1. Cell Barred information can include access prohibition information (Barred) that prohibits cell access and access permission information (Not Barred).

[0086] If the Cell Barred information received by the terminal is Access Allowed (Not Barred), unlike the existing procedure, the terminal reports that the searched cell is not a UAM-only cell and can perform a general cell access procedure as shown in Fig. 4.

[0087] If the Cell Barred information received by the terminal is access prohibited (Barred), the terminal continues the cell access procedure, unlike the existing procedure of FIG. 4.

[0088] Only terminals that support UAM can access UAM-only cells. Terminals that do not support UAM stop the UAM-only cell access procedure and search for a new cell to access (560).

[0089] A terminal supporting UAM checks UAM Cell Barred information via the received SIB1 (551). If the UAM Cell Barred information indicates access is prohibited (Barred), the connection process is halted, and the terminal searches for a new UAM-dedicated cell to connect to.

[0090] If the UAM Cell Barred information is "Not Barred," it is confirmed that the cell searched by the terminal is a UAM-only cell, the terminal obtains separate system information through SIB1 (570), and checks whether the cell satisfies the cell access criteria (580). If the criteria are not met, the terminal terminates the cell access procedure for a new cell access and performs cell search again. If the criteria are met, the cell access is performed, thereby completing the UAM-only cell access procedure (590).

[0091] In other words, the UAM-only cell can be defined as having Cell Barred information that prohibits access (Barred) and the UAM Cell Barred information that allows access (Not Barred).

[0092] Additionally, terminals capable of accessing UAM-only cells may be terminals with UAM support capabilities. Terminals with UAM support capabilities can also be referred to as UAM-supporting terminals.

[0093] A terminal not connected to a cell can be said to be in the RRC_Idle state. If a terminal in the RRC_Idle state connects to a specific cell, it can enter the RRC_Connected state. After connecting to a cell, a terminal in the RRC_Connected state can transmit its terminal capability information to the base station at the base station's request and can also perform handover policies to other cells. These policies can be applied differently depending on whether the terminal supports UAM or not, or whether the cell is a UAM-only cell or a general cell.

[0094] The difference from the conventional cell access process illustrated in FIG. 4 is that access to a UAM-only cell is possible according to the UAM Cell Barred information even when the Cell Barred information (540) is access prohibited (Barred), and that UAM support capability information (550) is separately checked so that only terminals with UAM support capability can access the UAM-only cell.

[0095] In the conventional cell access process in a 4G system illustrated in FIG. 4(a), if the Cell Barred information is Barred, the cell is determined to be unreachable and the terminal searches for another cell. However, in the invention according to the present specification illustrated in FIG. 5, the cell access process continues when the Cell Barred information is Barred.

[0096] FIG. 6 is a diagram schematically illustrating an overall procedure for a terminal to connect to a UAM dedicated cell based on a 5G system according to some embodiments of the present specification.

[0097] The difference between the procedure for a terminal to connect to a UAM-only cell based on a 4G system and the procedure for connecting to a UAM-only cell based on a 5G system is whether Cell Barred information is checked through MIB or SIB1.

[0098] In a 4G system, the terminal can check Cell Barred information through SIB1, and in a 5G system as shown in Fig. 6, the terminal can check Cell Barred information through MIB.

[0099] The terminal can check UAM Cell Barred information through SIB1 for both 4G and 5G systems.

[0100] Specifically, it proceeds through the following process.

[0101] 1) The terminal searches for a cell to connect to through cell search (610).

[0102] 2) The terminal receives MIB information including access information (Cell Barred) for the cell found from the base station (620).

[0103] 3) The terminal checks whether the found cell is a cell to which access is prohibited through Cell Barred information (630).

[0104] 4) Based on the terminal having UAM support capability, the terminal receives SIB1 including UAM Cell Barred information from the base station (641).

[0105] 5) If the UAM Cell information is access permitted (Not Barred) (642), the terminal obtains other system information from SIB1 (670).

[0106] 6) Check whether the cell meets the cell access criteria set by the terminal (680).

[0107] 7) If the cell satisfies the cell selection criteria, the terminal connects (camps) to the UAM-only cell (690).

[0108] FIG. 7 is a schematic diagram illustrating a state in which information regarding UAM Cell Barred is included in a SIB1 message received by a terminal from a base station according to some embodiments of the present specification.

[0109] FIG. 7 (a) is a diagram illustrating that information about UAM Cell Barred is included in a SIB1 message in a 4G system, and (b) is a diagram illustrating that information about UAM Cell Barred is included in a SIB1 message in a 5G system.

[0110] A UAM-only cell can be configured so that the Cell Barred information sent from the base station to the terminal is Barred and the UAM Cell Barred information is Not Barred. Referring to drawings (a) and (b), the UAM Cell Barred information can be transmitted from the base station to the terminal as part of SIB1. The UAM Cell Barred information can include either Not Barred, meaning access is permitted, or Barred, meaning access is prohibited.

[0111] FIG. 8 is a diagram schematically illustrating a process in which a terminal performs UAM-only cell access according to some embodiments of the present specification.

[0112] Referring to FIG. 8, a method for a terminal supporting UAM (Urban Aerial Mobility) in a wireless communication system to perform a connection procedure through a cell is as follows.

[0113] 1) A process in which a terminal receives system information including first access information regarding cell access permission on the cell and second access information regarding UAM cell access permission (S810), 2) a process in which the second access information is set to allow cell access based on the first access information being set to prohibit cell access (S820), and 3) a process in which a cell access procedure for UAM is performed through the cell based on the second access information being set to allow cell access (S830).

[0114] FIG. 9 is a diagram schematically illustrating the configuration of a base station and a terminal applied to UAM dedicated cell access according to some embodiments of the present specification.

[0115] The base station (910) may include a processor (920), a transceiver (930), a memory (940), etc. The processor (920) may be configured to implement the procedures or inventions proposed in the invention of the present specification. The memory (940) is connected to the processor (920) and stores various information related to the operation of the processor (920). The transceiver (930) is connected to the processor (920) and transmits or receives a wireless signal. The terminal (950) may include a processor (960), a transceiver (970), and a memory (980). The processor (960) may be configured to implement the procedures or inventions proposed in the invention of the present specification. The memory (980) is connected to the processor (960) and stores various information related to the operation of the processor (960). The transceiver (970) is connected to the processor (960) and transmits or receives a wireless signal.

[0116] More specifically, the transceiver (930) of the base station (910) and the transceiver (970) of the terminal (950) can transmit and receive signals or data for the terminal (950) to perform UAM dedicated cell access. The transceiver (930) of the base station (910) and the transceiver (970) of the terminal (950) can include wired or wireless transceivers. The transceiver (930) of the base station (910) and the transceiver (970) of the terminal (950) can include one or more components that enable communication via a Local Area Network (LAN), a Wide Area Network (WAN), a Value Added Network (VAN), a mobile radio communication network, a satellite communication network, and a combination thereof. Additionally, the transmitter / receiver (930) of the base station (910) and the transmitter / receiver (970) of the terminal (950) can wirelessly transmit and receive data or signals using cellular communication, wireless LAN (e.g., Wi-Fi), etc.

[0117] The memory (940) of the base station (910) and the memory (980) of the terminal (950) can store programs for the operations of the processor (920) of the base station (910) and the processor (960) of the terminal (950), respectively, and can temporarily or permanently store input / output data. The memory (940) of the base station (910) and the memory (980) of the terminal (950) can include at least one type of storage medium among RAM, SRAM, ROM, EEPROM, PROM, magnetic memory, magnetic disk, optical disk, hard disk type, multimedia card micro type, flash memory type, and card type memory (e.g., SD or XD memory, etc.).

[0118] Additionally, the memory (940) of the base station (910) and the memory (980) of the terminal (950) can store various functions and algorithms, and can store various data, applications, software, commands, codes, etc.

[0119] The processor (920) of the base station (910) and the processor (960) of the terminal can control the overall operation of the base station (910) and the terminal (950), respectively. The processor (920) of the base station (910) and the processor (960) of the terminal (950) can execute one or more programs. The processor (920) of the base station (910) and the processor (960) of the terminal (950) can mean a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which methods according to some embodiments of the present specification are performed.

[0120] In some embodiments, the processor (960) of at least one terminal (950) may receive access information for the UAM-only cell from the base station and access the UAM-only cell to perform UAM-only cell access of the terminal (950).

[0121] In some embodiments, the processor (960) of at least one terminal (950) may determine that access to the UAM-only cell is based on access information received by the terminal (950) based on whether the terminal (950) has UAM support capability.

[0122] According to some embodiments, a method for performing UAM dedicated cell access of a terminal may be implemented as a program code that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program commands, data files, data structures, etc., alone or in combination. The program commands recorded on the medium may be those specially designed and configured for the present specification or may be known and usable by those skilled in the art in computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and hardware devices specially configured to store and execute program commands, such as ROMs, RAMs, and flash memories. Examples of program commands include not only machine language codes but also high-level language codes that can be executed by a computer.

[0123] Additionally, the method for controlling access to a UAM-only cell of a terminal according to embodiments may be provided as included in a computer program product.

[0124] A computer program product may include a software program and a computer-readable storage medium on which the software program is stored. For example, a computer program product may include a product in the form of a software program distributed electronically by an electronic device manufacturer or through an electronic marketplace. In this case, the storage medium may be the storage medium of a server or a relay server that stores the program.

[0125] As seen above, the invention of the present specification has the characteristics of i) being able to configure a UAM-only cell that only terminals used in the air can access, and ii) being able to set a terminal having a UAM support capability that determines whether to access a UAM-only cell and a terminal not having a UAM support capability.

[0126] As described in detail with respect to the embodiments, the scope of the present specification is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concepts of the present specification defined in the following claims also fall within the scope of the present specification.

Claims

In a method for a terminal supporting UAM (Urban Aerial Mobility) in a wireless communication system to perform a connection procedure through a cell, Receiving system information including first access information regarding cell access permission on the cell and second access information regarding UAM cell access permission; Based on the first connection information being set to prohibit cell connection, it is confirmed that the second connection information is set to allow cell connection; and Including performing a cell access procedure for UAM through the cell based on the second access information being set to allow cell access. method. In the first paragraph, Further comprising searching for another cell based on the second connection information being set to cell connection prohibition. method. In the first paragraph, Further comprising performing a general cell access procedure based on the first access information being set to allow cell access. method. In a method for a terminal to perform a cell access procedure in a wireless communication system, Receiving system information including first access information regarding cell access permission on the cell and second access information regarding UAM (Urban Aerial Mobility) cell access permission; Based on the above terminal not supporting UAM, performing another cell search; and Based on the above terminal supporting UAM, performing a connection procedure through the cell, The above first connection information is set to cell connection prohibition, The second connection information is characterized in that it is set to allow cell connection. method. In a method for supporting a connection procedure through a cell of a terminal supporting UAM (Urban Aerial Mobility) in a wireless communication system, Transmit system information through the above cell; and Including receiving a cell access request signal through the above cell, The above system information includes first access information regarding cell access permission on the cell and second access information regarding UAM cell access permission, A method characterized in that, based on the above cell being a UAM-only cell, the first access information is set to prohibit cell access and the second access information is set to allow cell access. In a terminal supporting UAM (Urban Aerial Mobility) that performs a connection procedure through a cell in a wireless communication system, Transmitter and receiver; at least one processor; and At least one computer memory operably connectable to said at least one processor and storing instructions that, when executed, cause said at least one processor to perform operations; The above actions are: Receive system information including first access information regarding cell access permission on the above cell and second access information regarding UAM cell access permission, Based on the first connection information being set to prohibit cell connection, it is checked whether the second connection information is set to allow cell connection, Including performing a cell access procedure for UAM through the cell based on the second access information being set to allow cell access. Terminal. In paragraph 6, Further comprising searching for another cell based on the second connection information being set to cell connection prohibition. Terminal. In paragraph 6, Further comprising performing a general cell access procedure based on the first access information being set to allow cell access. Terminal. In a terminal performing a connection procedure through a cell in a wireless communication system, Transmitter and receiver; at least one processor; and At least one computer memory operably connectable to said at least one processor and storing instructions that, when executed, cause said at least one processor to perform operations; The above actions are: Receive system information including first access information regarding cell access permission on the above cell and second access information regarding UAM (Urban Aerial Mobility) cell access permission, Based on the above terminal not supporting UAM, another cell search is performed, Including performing a connection procedure through the cell based on the above terminal supporting UAM, The above first connection information is set to cell connection prohibition, The second connection information is characterized in that it is set to allow cell connection. Terminal. In a base station that supports the connection procedure through a cell of a terminal that supports UAM (Urban Aerial Mobility) in a wireless communication system, Transmitter and receiver; at least one processor; and At least one computer memory operably connectable to said at least one processor and storing instructions that, when executed, cause said at least one processor to perform operations; The above actions are: Transmit system information through the above cell, Including receiving a cell access request signal through the above cell, The above system information includes first access information regarding cell access permission on the cell and second access information regarding UAM cell access permission, Based on the fact that the cell is a UAM-only cell, the first access information is set to prohibit cell access and the second access information is set to allow cell access. Base station.

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