WO2025041112A1 - Method for controlling urban aerial mobility (uam)-dedicated cell access of terminal in wireless communication system, and apparatus therefor - Google Patents

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

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.

UAM, a short-distance urban mobility system, is an aerial vehicle that takes off from the ground, travels to its destination, and then lands at its destination. Recently, new services based on this UAM have emerged.

For example, UAM can provide transportation services such as taxis through vehicles flying hundreds of meters in the air. In this way, services provided through UAM in the sky rather than on the ground can have different wireless communication environments than on the ground.

UAM, which is intended for use in the air, may affect ground terminals due to various signals generated from 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.

The technical problem to be achieved by the present specification includes providing a method for more efficiently controlling access of a UAM terminal in the air to a UAM-only cell and a device therefor. In particular, it includes suggesting a method for preventing a ground terminal from accessing a UAM-only cell and a method for configuring a UAM-only cell.

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

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 including: 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.

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.

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

In another aspect of the present specification, a method for a terminal to perform a cell access procedure in a wireless communication system is provided. The method includes: 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 allow cell access.

In another aspect of the present specification, a method for supporting a cell-based access procedure of a terminal supporting Urban Aerial Mobility (UAM) in a wireless communication system is provided. The method includes: 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 based on the cell being a UAM dedicated cell, the first access information is set to prohibit cell access and the second access information is set to allow cell access.

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 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, 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 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.

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.

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

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 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, wherein the operations include: 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 cell access prohibition and the second access information is set to cell access permission.

In another aspect of the present specification, a base station supporting a cell-based access procedure of a terminal supporting Urban Aerial Mobility (UAM) in a wireless communication system is provided. 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, wherein the operations include: 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 based on the cell being a UAM-only cell, the first access information may be set to cell access prohibition and the second access information may be set to cell access permission.

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 is added, so that only terminals having UAM support capability can access the UAM-only cell, thereby preventing terrestrial terminals from accessing the UAM-only cell. Preventing terrestrial terminals from accessing the UAM-only cell can prevent unnecessary handovers caused by terrestrial terminals from accessing the cell.

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

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.

The drawings attached hereto are included to provide an understanding of the present specification, illustrate various embodiments of the present specification and, together with the description of the specification, serve to explain the principles of the present specification.

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

FIG. 2 is a diagram illustrating one embodiment of a network architecture in a 5G NR system.

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

Figure 4 is a diagram schematically illustrating an existing procedure for a terminal to access a cell searched for.

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

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.

FIG. 7 is a diagram schematically 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.

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.

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

Exemplary implementations of the present disclosure will now be described in detail with reference to the accompanying drawings. The detailed description set forth below, together with the accompanying drawings, is intended to describe exemplary implementations of the present disclosure and is not intended to represent the only implementation forms that may be practiced in accordance with the present disclosure. The detailed description below includes specific details in order 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.

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".

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

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

Referring to Figure 1, UAM service is a service that provides transportation such as taxis through vehicles flying in the air at an altitude of 300m to 600m. In addition, it can also refer to a transportation system that moves through urban areas using aircraft. Problems such as traffic congestion and noise pollution have been raised due to transportation on the ground. UAM service, which provides services through vehicles flying in the air, is emerging as a means to solve these problems.

The range of radio waves transmitted from a base station may differ from that in the air due to objects of different heights on the ground, such as buildings and cars. Therefore, UAM services provided in the air may have a different wireless communication environment than that on the ground.

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

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

Referring to FIG. 2, the next generation wireless access network is composed of base stations (gNBs) that provide user plane protocols (e.g., SDAP, PDCP, RLC, MAC, PHY) and control plane protocols (e.g., RRC, PDCP, RLC, MAC, PHY) termination 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 access and mobility management function (AMF) and the user plane function (UPF) may be implemented by different core network devices, or may be implemented by a single core network device. In the RAN, transmission/reception of signals between the gNB and the UE is performed via a radio interface. For example, in RAN, transmission/reception of signals between base stations and terminals is performed via physical resources (e.g., radio frequency (RF)). In contrast, transmission/reception of signals between base stations (gNBs) and network functions (e.g., AMF, UPF) in a core network can be performed via physical connections (e.g., optical cables) between core network nodes or logical connections between core network functions, not via a radio interface.

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

UAM is an aerial vehicle that takes off from the ground, moves to a destination, and then lands at the destination. UAM, which operates in the air rather than on the ground, can connect to a specific cell while moving and communicate with a base station.

The present invention is not limited to UAM, but can also be applied to unmanned aerial vehicles such as UAVs (Unmanned Aerial Vehicles). The invention according to this specification is explained using UAM as an example.

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.

The terminal in the sky can be controlled to connect only to the UAM dedicated cell (330). This is to overcome the handover problem that occurs when the terminal (320) on the ground connects to the UAM dedicated cell (330).

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 be referred to as the UAM capability of the terminal. A terminal (310) having UAM support capability may be referred to as a UAM capability terminal. A terminal (320) not having UAM support capability may be referred to as a UAM capability non-supporting terminal or a conventional terrestrial terminal.

Only a terminal (310) with UAM support capability can access a UAM-only cell (330), and access can be prohibited for a terminal (320) that does not have UAM support capability.

Figure 4 is a diagram schematically illustrating an existing procedure for a terminal to access a cell searched for.

Here, cells are not limited to UAM-only cells.

Cell access by terminals may also be referred to as cell camping.

The cell access process of a terminal is different depending on whether the network is 4G or 5G. Drawing 4(a) is a drawing illustrating the cell access process of a terminal in a 4G system, and Drawing 4(b) is a drawing illustrating the cell access process of a terminal in a 5G system.

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

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

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.

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).

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

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

6) Check whether the cell in question meets the cell selection criteria of the terminal (470).

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

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

When a cell is found, a MIB (Master Information Block) (420) and SIB1 (System information block type 1) (430) message are received from the base station. The MIB contains the most basic parameters required for a terminal to access a cell. The SIB1 contains information related to the terminal's cell access. The MIB and SIB1 can also be referred to as system information.

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 in the drawing (a), and in the case of a 5G network, this can be confirmed by receiving Cell Barred information through MIB as 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).

If the Cell Barred information received by the terminal is access barred, it is reported that access to the corresponding cell is barred for a certain period of time, and the terminal stops the cell access process and searches for another cell (450).

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).

If the cell does not satisfy the criterion, the terminal searches for a new cell again, and if satisfied, completes connection to the cell (480).

Depending on whether the network is 4G or 5G, the difference in the cell access process is the location where the cell to which access is prohibited is checked (Cell Barred information). As mentioned, in 4G, through SIB1 (440), and in 5G, through MIB, whether the cell searched by the terminal is a cell that can be accessed is checked with Cell Barred information (431).

The existing process according to Fig. 4 has a problem in that it is difficult to distinguish whether the cell searched by the terminal is a cell for a terminal in the air or a cell for a ground terminal, and even if it is a cell for the air, it cannot block access to a cell on the ground. Therefore, a method is required to distinguish whether the searched cell is a UAM-only cell only for a terminal in the air, and to allow a terminal in the air to access a UAM-only cell.

Here, the UAM-only cell configuration and the method of connecting a terminal to a UAM-only cell are described in detail in Figures 5 to 8.

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

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

2) Receives a MIB (Master Information Block) (520) and SIB1 (System information block type 1) (530) message including access information (Cell Barred) for a cell found from a base station.

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

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).

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

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

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

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

The terminal may include a terminal that supports UAM and a general terminal that does not support UAM. A terminal that supports UAM can access a UAM-only cell, and can also access a general cell that both a terminal that supports UAM and a general terminal that does not support UAM can access. However, a terminal that supports UAM may not be able to access a cell that only a general terminal that does not support UAM can access.

A cell may include a cell that can only be accessed by terminals that support UAM, a cell that can be accessed by 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.

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.

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.

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

The base station can transmit both Cell Barred information and UAM Cell Barred information if the cell that the terminal is attempting to connect to is a cell that only terminals supporting UAM can connect to.

As another example, if the cell to which a 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.

As another example, 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 general terminals that do not support UAM can connect to.

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

The terminal checks the Cell Barred information of the cell found through the search (540). In the case of a 4G system, the Cell Barred information can be checked by receiving the Cell Barred information through SIB1. The Cell Barred information may include access prohibition information (Barred) that prohibits cell access and access permission information (Not Barred).

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.

If the Cell Barred information received by the terminal is access barred, the terminal continues the cell access procedure, unlike the existing procedure of Fig. 4.

Only terminals supporting 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).

A terminal supporting UAM checks UAM Cell Barred information through the received SIB1 (551). If the UAM Cell Barred information is access prohibited (Barred), the access procedure is stopped and the terminal searches for a new UAM-only cell to access.

If the UAM Cell Barred information is Access Allowed (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, and if the criteria are met, the cell access is performed, thereby completing the UAM-only cell access procedure (590).

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

Additionally, a terminal that can access a UAM-only cell may be a terminal with UAM support capability. A terminal with UAM support capability may also be said to be a terminal that supports UAM.

A state in which a terminal is not connected to a cell can be said to be in the RRC_Idle state. When a terminal in the RRC_Idle state connects to a specific cell, it can be in 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 request of the base station, and can also perform a handover policy to another cell, etc. These policies, etc. can be applied differently depending on whether the terminal supports UAM or does not support UAM, or whether the cell is a UAM-only cell or a general cell.

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.

In the conventional cell access process in a 4G system illustrated through Fig. 4(a), if the Cell Barred information is Barred, the cell is determined to be unaccessible and the terminal searches for another cell. However, in the invention according to the present specification illustrated through Fig. 5, the cell access procedure is continued when the Cell Barred information is Barred.

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.

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 to check Cell Barred information through MIB or through SIB1.

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.

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

Specifically, it proceeds through the following process.

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

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

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

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

5) When the UAM Cell information is Not Barred (642), the terminal obtains other system information from SIB1 (670).

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

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

FIG. 7 is a diagram schematically 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.

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.

A UAM-only cell can be set 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 included in SIB1. The UAM Cell Barred information can include either Not Barred, meaning access is permitted, or Barred, meaning access is prohibited.

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.

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.

1) A process in which a terminal receives system information including first access information regarding cell access permission and second access information regarding UAM cell access permission on the cell (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).

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

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 this 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), etc. The processor (960) may be configured to implement the procedures or inventions proposed in the invention of this 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.

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 transceiver (930) of the base station (910) and the transceiver (970) of the terminal (950) can wirelessly transmit and receive data or signals using cellular communication, wireless LAN (e.g., Wi-Fi), etc.

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 (for example, SD or XD memory, etc.).

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.

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.

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

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.

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 to 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 the program commands include not only machine language codes but also high-level language codes that can be executed by a computer.

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.

A computer program product may include a S/W program, a computer-readable storage medium on which the S/W program is stored. For example, a computer program product may include a product in the form of a S/W program that is distributed electronically through a manufacturer of an electronic device or an electronic market. In this case, the storage medium may be a storage medium of a server or a relay server that stores the program.

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

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 (10)

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 above cell and second access information regarding UAM cell access permission; Based on the first connection information being set to prohibit cell connection, verifying whether 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 including 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 above 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, Transmitting system information through the above cells; 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 the first access information is set to prohibit cell access and the second access information is set to allow cell access based on the fact that the cell is a UAM-only cell. 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 connected 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 above 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 Article 6, Further including searching for another cell based on the second connection information being set to cell connection prohibition. Terminal. In Article 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 connected 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, other 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 supporting UAM (Urban Aerial Mobility) in a wireless communication system, Transmitter and receiver; at least one processor; and At least one computer memory operably connected 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 cells, 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 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. Base station.

Images