Method and apparatus for transmitting and receiving signals in wireless communication system including heterogeneous wireless access technologies

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a terminal in a wireless communication system, according to one embodiment of the present disclosure, may comprise the steps of: receiving a control information set including information regarding a first resource associated with a first communication system; determining, on the basis of the control information set, whether the first resource is used for a first signal associated with the first communication system; and transmitting or receiving a second signal associated with a second communication system on the basis of a second resource at least partially overlapping the first resource according to the determination.

Description

Method and device for transmitting and receiving signals in a wireless communication system composed of heterogeneous wireless access technologies

[0001] The present disclosure relates to a communication method of a wireless communication system, and to a method and device for defining efficient frequency use and transmission and reception operations of a terminal.

[0002] 5G mobile communication technology defines a wide frequency band to enable fast transmission speeds and new services, and can be implemented not only in the sub-6GHz frequency band, such as 3.5 gigahertz (3.5GHz), but also in the ultra-high frequency band called millimeter wave (mmWave), such as 28GHz and 39GHz ('Above 6GHz'). In addition, for 6G mobile communication technology, which is called the system after 5G communication (Beyond 5G), methods are being considered to achieve even faster transmission speeds and even less ultra-low latency compared to 5G mobile communication technology.

[0003] In the early stages of 5G mobile communication technology, the goal is to support services and meet performance requirements for enhanced Mobile Broadband (eMBB), Ultra-Reliable Low-Latency Communications (URLLC), and massive Machine-Type Communications (mMTC). These include beamforming and massive MIMO to mitigate path loss of radio waves in ultra-high frequency bands and increase the transmission distance of radio waves, support for various numerologies (such as operation of multiple subcarrier intervals) and dynamic operation of slot formats for efficient use of ultra-high frequency resources, initial access technology to support multi-beam transmission and wideband, definition and operation of BWP (Bidth Part), new channel coding methods such as LDPC (Low Density Parity Check) codes for large-capacity data transmission and Polar Code for reliable transmission of control information, and L2 pre-processing (L2). Standardization has been made for network slicing, which provides dedicated networks specialized for specific services, and pre-processing.

[0004] In addition, discussions are underway to improve and enhance the initial 5G mobile communication technology in consideration of the services that 5G mobile communication technology was intended to support, and standardization is being carried out for technologies such as V2X (Vehicle-to-Everything) to help autonomous vehicles make driving decisions and increase user convenience based on their own location and status information transmitted by vehicles, NR-U (New Radio Unlicensed) for the purpose of system operation that complies with various regulatory requirements in unlicensed bands, NR terminal low power consumption technology (UE Power Saving), Non-Terrestrial Network (NTN), which is direct terminal-satellite communication to secure coverage in areas where communication with terrestrial networks is impossible, and Positioning.

[0005] In addition, standardization of technologies such as the Industrial Internet of Things (IIoT) for intelligent factories to support new services through linkage and convergence with other industries, Integrated Access and Backhaul (IAB) that provides nodes for expanding network service areas by integrating wireless backhaul links and access links, Mobility Enhancement technology including Conditional Handover and Dual Active Protocol Stack (DAPS) handover, and 2-step random access (2-step RACH for NR) that simplifies random access procedures have also been carried out.

[0006] Additionally, standardization is underway for 5G baseline architectures (e.g., Service-based Architecture, Service-based Interface) for incorporating Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, as well as Mobile Edge Computing (MEC), which provides services based on the location of the terminal.

[0007] With the commercialization of 5G mobile communication systems, an explosive increase in connected devices will be connected to communication networks, necessitating enhanced functionality and performance of 5G mobile communication systems and integrated operation of these connected devices. To this end, new research will be conducted on improving 5G performance and reducing complexity, supporting AI services, supporting metaverse services, and drone communications by utilizing eXtended Reality (XR), Artificial Intelligence (AI), and Machine Learning (ML) to efficiently support Augmented Reality (AR), Virtual Reality (VR), and Mixed Reality (MR).

[0008] In addition, the development of these 5G mobile communication systems can serve as the basis for the development of new waveforms for coverage guarantee of 6G mobile communication technology, multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), Array Antenna, and Large Scale Antenna, metamaterial-based lenses and antennas, high-dimensional spatial multiplexing technology using Orbital Angular Momentum (OAM), Reconfigurable Intelligent Surface (RIS) technology, as well as full duplex technology for improving the frequency efficiency and system network of 6G mobile communication technology, satellite, AI (Artificial Intelligence)-based communication technology that utilizes AI from the design stage and internalizes end-to-end AI support functions to realize system optimization, and next-generation distributed computing technology that realizes services with complexity that exceeds the limits of terminal computing capabilities by utilizing ultra-high-performance communication and computing resources.

[0009] The disclosed embodiment seeks to provide a device and method capable of effectively providing mobile communication services.

[0010] The technical problems to be achieved in the disclosed embodiments are not limited to those mentioned above, and other technical problems not mentioned can be considered by a person having ordinary skill in the art from the various embodiments of the present disclosure described below.

[0011] A method performed by a terminal of a wireless communication system according to one embodiment of the present disclosure may include the steps of receiving a control information set including information on a first resource related to a first communication system, determining based on the control information set whether the first resource is used for a first signal related to the first communication system, and transmitting or receiving a second signal related to a second communication system based on a second resource at least partially overlapping with the first resource according to the determination.

[0012] A method performed by a base station of a wireless communication system according to one embodiment of the present disclosure may include the steps of determining whether a first resource associated with a first communication system is used for a first signal associated with the first communication system, transmitting a control information set including information about the first resource, and transmitting or receiving a second signal associated with a second communication system based on a second resource at least partially overlapping with the first resource according to the determination.

[0013] According to one embodiment of the present disclosure, a terminal of a wireless communication system may include at least one transceiver, at least one processor communicatively connected to the at least one transceiver, and a memory communicatively connected to the at least one processor and executable individually or in any combination of the at least one processor, such that the terminal receives a control information set including information on a first resource related to a first communication system, determines based on the control information set whether the first resource is used for a first signal related to the first communication system, and transmits or receives a second signal related to a second communication system based on a second resource at least partially overlapping with the first resource according to the determination.

[0014] A base station of a wireless communication system according to one embodiment of the present disclosure may include at least one transceiver, at least one processor communicatively connected to the at least one transceiver, and a memory communicatively connected to the at least one processor and executable by the at least one processor individually or in any combination, wherein the memory stores instructions that cause the base station to determine whether a first resource associated with a first communication system is used for a first signal associated with the first communication system, transmit a control information set including information about the first resource, and transmit or receive a second signal associated with a second communication system based on a second resource at least partially overlapping with the first resource according to the determination.

[0015] The disclosed embodiment provides a transmission / reception device and method for a terminal and a base station, and increases frequency usage efficiency in a mobile communication system.

[0016] The effects that can be obtained from the disclosed embodiments are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly derived and understood by a person having ordinary skill in the art based on the detailed description below.

[0017] FIG. 1 is a diagram showing the basic structure of a time-frequency resource domain of a 5G system according to one embodiment of the present disclosure.

[0018] FIG. 2 is a diagram illustrating a random access procedure according to one embodiment of the present disclosure.

[0019] FIG. 3 is a diagram illustrating a procedure for a terminal to report terminal capability information to a base station according to one embodiment of the present disclosure.

[0020] FIG. 4 is a diagram showing an example of bandwidth portion settings according to one embodiment of the present disclosure.

[0021] FIG. 5 is a diagram showing the interrelationship between frequency bands and coverage according to one embodiment of the present disclosure.

[0022] FIG. 6A is a diagram illustrating an example of dynamic frequency sharing according to one embodiment of the present disclosure.

[0023] FIG. 6b is a diagram illustrating an example of dynamic frequency sharing according to one embodiment of the present disclosure.

[0024] FIG. 7 is a diagram illustrating the operation of a base station and a terminal according to one embodiment of the present disclosure.

[0025] FIG. 8 is a diagram illustrating the operation of a base station and a terminal according to one embodiment of the present disclosure.

[0026] FIG. 9 is a diagram illustrating the operation of a base station and a terminal according to one embodiment of the present disclosure.

[0027] FIG. 10 is a diagram illustrating an example of a terminal procedure according to one embodiment of the present disclosure.

[0028] FIG. 11 is a diagram illustrating an example of a base station procedure according to one embodiment of the present disclosure.

[0029] FIG. 12 is a diagram showing a terminal transceiver device according to one embodiment of the present disclosure.

[0030] FIG. 13 is a block diagram illustrating the structure of a terminal according to one embodiment of the present disclosure.

[0031] FIG. 14 is a block diagram illustrating the structure of a base station according to one embodiment of the present disclosure.

[0032] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the attached drawings. Furthermore, detailed descriptions of related known functions or configurations will be omitted if they are deemed to unnecessarily obscure the gist of the present disclosure. Furthermore, the terms described below are defined based on their functions in the present disclosure and may vary depending on the intent or custom of the user or operator. Therefore, their definitions should be based on the overall content of this specification.

[0033] The advantages and features of the present disclosure, and methods for achieving them, will become clearer with reference to the embodiments described below in detail together with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below and may be implemented in various different forms. These embodiments are provided solely to ensure that the present disclosure is complete and to fully inform those skilled in the art of the scope of the disclosure, and the present disclosure is defined only by the scope of the claims. Like reference numerals designate like elements throughout the specification.

[0034] At this time, it will be understood that each block of the processing flowchart drawings and combinations of the flowchart drawings can be performed by computer program instructions. These computer program instructions can be installed in a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing equipment, so that the instructions executed by the processor of the computer or other programmable data processing equipment create a means for performing the functions described in the flowchart block(s). These computer program instructions can also be stored in a computer-available or computer-readable memory that can direct a computer or other programmable data processing equipment to implement the functions in a specific manner, so that the instructions stored in the computer-available or computer-readable memory can also produce a manufactured item that includes an instruction means for performing the functions described in the flowchart block(s). Since the computer program instructions may be installed on a computer or other programmable data processing device, a series of operational steps may be performed on the computer or other programmable data processing device to create a computer-executable process, and the instructions that cause the computer or other programmable data processing device to perform the steps for performing the functions described in the flowchart block(s) may also provide steps for performing the functions described in the flowchart block(s).

[0035] Additionally, each block may represent a module, segment, or portion of code that contains one or more executable instructions for performing a specific logical function(s). It should also be noted that in some alternative implementation examples, the functions described in the blocks may occur out of order. For example, two blocks depicted in succession may actually be executed substantially concurrently, or the blocks may sometimes be executed in reverse order, depending on their respective functions.

[0036] Here, the term '~ part' used in this embodiment means software or hardware components such as FPGA (Field Programmable Gate Array) or ASIC (Application Specific Integrated Circuit), and the '~ part' performs certain roles. However, the '~ part' is not limited to software or hardware. The '~ part' may be configured to be on an addressable storage medium or may be configured to play one or more processors. Therefore, as an example, the '~ part' includes components such as software components, object-oriented software components, class components, and task components, processes, functions, properties, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. The functions provided within the components and '~ parts' may be combined into a smaller number of components and '~ parts' or further separated into additional components and '~ parts'. Additionally, the components and '~parts' may be implemented to activate one or more CPUs within a device or secure multimedia card. In addition, in an embodiment, the '~parts' may include one or more processors.

[0037] In the following description of the present disclosure, detailed descriptions of related known functions or configurations will be omitted if they are deemed to unnecessarily obscure the gist of the present disclosure. Hereinafter, embodiments of the present disclosure will be described with reference to the attached drawings.

[0038] The terms used in the following description to identify connection nodes, terms referring to network entities, terms referring to messages, terms referring to interfaces between network entities, terms referring to various identification information, etc. are provided as examples for convenience of explanation. Therefore, the present disclosure is not limited to the terms described below, and other terms referring to objects with equivalent technical meanings may be used.

[0039] In the following description, the terms "physical channel" and "physical signal" may be used interchangeably with data or control signals. For example, while PDSCH (physical downlink shared channel) refers to a physical channel through which data is transmitted, PDSCH can also be used to refer to data. That is, in the present disclosure, the expression "transmitting a physical channel" can be interpreted equivalently to the expression "transmitting data or a signal through a physical channel."

[0040] Hereinafter, in the present disclosure, higher layer signaling refers to a signal transmission method in which a base station transmits a signal to a terminal using a downlink data channel of the physical layer, or a terminal transmits a signal to a base station using an uplink data channel of the physical layer. Higher layer signaling can be understood as radio resource control (RRC) signaling or a media access control (MAC) control element (CE).

[0041] For convenience of explanation, this disclosure uses terms and names defined in the 3GPP NR (New Radio: 5th generation mobile communications standard) standards. However, this disclosure is not limited to these terms and names, and can be equally applied to systems conforming to other standards.

[0042] Hereinafter, a base station is an entity that performs resource allocation of a terminal, and may be at least one of a gNodeB, a gNB, an eNodeB, an eNB, a NodeB, a BS (Base Station), a wireless access unit, a base station controller, or a node on a network. The terminal may include a UE (User Equipment), an MS (Mobile Station), a cellular phone, a smartphone, a computer, an IoT device, a sensor, or a multimedia system capable of performing a communication function. Of course, the present invention is not limited to the examples described.

[0043] While existing mobile communication systems have focused on conventional voice / data communications, the 5G system aims to satisfy various services and requirements, such as enhanced Mobile Broadband (eMBB) services to improve existing voice / data communications, ultra-reliable and low latency communication (URLLC) services, and massive Machine Type Communication (MTC) services that support large-scale machine-to-machine communications.

[0044] While the transmission bandwidth of existing mobile communication systems, such as LTE (Long Term Evolution or E-UTRA (Evolved Universal Terrestrial Radio Access)) and LTE-A (LTE-Advanced or E-UTRA Evolution), is limited to a maximum of 20MHz per single carrier, the 5G system aims to provide ultra-high-speed data services of up to several Gbps by utilizing a much wider ultra-wide bandwidth. Accordingly, the 5G system is considering ultra-high frequency bands from several GHz up to 100 GHz, where it is relatively easy to secure ultra-wide bandwidth frequencies, as candidate frequencies. Additionally, it is possible to secure wide bandwidth frequencies for the 5G system through frequency reallocation or allocation among frequency bands ranging from several hundred MHz to several GHz used in existing mobile communication systems.

[0045] Ultra-high frequency radio waves, sometimes called millimeter waves (mmWave), have wavelengths on the order of millimeters. However, in ultra-high frequency bands, path loss increases proportionally to the frequency band, reducing the coverage of mobile communication systems.

[0046] To overcome the drawback of reduced coverage in ultra-high frequency bands, beamforming technology is applied. This technology focuses radio wave energy toward a predetermined target using multiple antennas, thereby increasing the transmission range. Specifically, a signal using beamforming technology has a relatively narrow beamwidth, and the radiation energy is concentrated within this narrowed beamwidth, increasing the transmission range. Beamforming can be applied to both the transmitter and receiver. In addition to increasing coverage, beamforming also reduces interference in areas outside the beamforming direction. For beamforming to function properly, accurate measurement and feedback of the transmission and reception beams are required. Beamforming can be applied to control or data channels that correspond one-to-one between a given terminal and a base station. Furthermore, beamforming can be applied to common signals transmitted by a base station to multiple terminals within a system, such as synchronization signals, physical broadcast channels (PBCHs), and control and data channels for transmitting system information, to increase coverage. When applying beamforming technology to a common signal, beam sweeping technology, which transmits a signal by changing the beam direction, is additionally applied so that the common signal can reach terminals located at any location within the cell.

[0047] Another requirement for 5G systems is ultra-low latency services, with transmission delays of approximately 1ms between transmitters and receivers. One way to reduce transmission delay is to design a frame structure based on a short TTI (Transmission Time Interval), which is shorter than that of LTE and LTE-A. A TTI is the basic time unit for scheduling, and the TTI of existing LTE and LTE-A systems is 1ms, corresponding to the length of one subframe. For example, in 5G systems, to meet the requirements for ultra-low latency services, shorter TTIs such as 0.5ms, 0.25ms, and 0.125ms are possible, which are shorter than those of existing LTE and LTE-A systems.

[0048] FIG. 1 is a diagram illustrating the basic structure of a time-frequency resource domain of a 5G system according to one embodiment of the present disclosure. That is, FIG. 1 is a diagram illustrating the basic structure of a time-frequency resource domain, which is a radio resource domain through which data or control channels of a 5G system are transmitted.

[0049] Referring to Figure 1, the horizontal axis in Figure 1 represents the time domain and the vertical axis represents the frequency domain. The minimum transmission unit in the time domain of the 5G system is an OFDM (Orthogonal Frequency Division Multiplexing) symbol. The dog symbols (102) come together to form one slot (106), A plurality of slots can be gathered to form a subframe (105). The length of one subframe (105) is 1.0 ms, and 10 subframes can be gathered to form a 10 ms frame (114). The minimum transmission unit in the frequency domain is a subcarrier, and the bandwidth of the entire system transmission bandwidth is a total of N BW It can be composed of a subcarrier (104).

[0050] The basic unit of resources in the time-frequency domain is a Resource Element (RE) (112), which can be represented by an OFDM symbol index and a subcarrier index. A Resource Block (RB or Physical Resource Block, PRB) is a resource block in the frequency domain. can be defined as a series of consecutive subcarriers (110). In the 5G system = 12, and the data rate can increase in proportion to the number of RBs scheduled to the terminal.

[0051] In a 5G system, a base station can map data in RB units and perform scheduling on RBs, which typically constitute a slot for a given terminal. That is, in a 5G system, the basic time unit for scheduling may be a slot, and the basic frequency unit for scheduling may be an RB.

[0052] Number of OFDM symbols It is determined by the length of the cyclic prefix (CP) added to each symbol to prevent interference between symbols. For example, if the normal CP is applied, = 14, when Extended CP is applied = can be 12. Extended CP is applied to a system with a relatively long transmission distance than the general CP, and can maintain orthogonality between symbols. In the case of the general CP, since the ratio of the CP length to the symbol length is maintained at a constant value, the overhead due to the CP can be maintained constant regardless of the subcarrier spacing. That is, if the subcarrier spacing is small, the symbol length becomes longer, and thus the CP length can also become longer. Conversely, if the subcarrier spacing is large, the symbol length becomes shorter, and thus the CP length can be reduced. The symbol length and CP length can be inversely proportional to the subcarrier spacing.

[0053] In 5G systems, various frame structures can be supported by adjusting the subcarrier spacing to meet diverse services and requirements. For example,

[0054] - From the perspective of the operating frequency band, the larger the subcarrier spacing, the more advantageous it is for recovering phase noise in the high-frequency band.

[0055] - From a transmission time perspective, if the subcarrier spacing is large, the symbol length in the time domain becomes shorter, and consequently, the slot length becomes shorter, which is advantageous for supporting ultra-low delay services such as URLLC.

[0056] - From a cell size perspective, a longer CP length allows for larger cells to be supported, so a smaller subcarrier spacing allows for relatively larger cells to be supported. In mobile communications, a cell is a concept that refers to the area covered by a single base station.

[0057] Subcarrier spacing, CP length, etc. are essential information for OFDM transmission and reception. Smooth transmission and reception are possible only when the base station and terminal recognize the subcarrier spacing, CP length, etc. as common values. shows the relationship between the subcarrier spacing configuration (μ), subcarrier spacing (Δf), and CP length supported by the 5G system.

[0058]

[0059] shows the number of symbols per slot for each subcarrier spacing setting (μ) in the case of the general CP. ), number of slots per frame ( ), number of slots per subframe ( ) is indicated.

[0060]

[0061] shows the number of symbols per slot for each subcarrier spacing setting (μ) in the case of extended CP. ), number of slots per frame ( ), number of slots per subframe ( ) is indicated.

[0062]

[0063] 5G systems can satisfy diverse user requirements through coexistence or dual-mode operation with existing LTE and / or LTE-A (hereinafter referred to as LTE / LTE-A) systems. For example, existing LTE / LTE-A systems can provide stable system operation to terminals, while 5G systems can provide enhanced services to terminals. Therefore, the 5G system's frame structure must at least include the LTE / LTE-A frame structure or essential parameter set (subcarrier spacing = 15 kHz).

[0064] For example, comparing a frame structure with a subcarrier spacing setting μ=0 (hereinafter referred to as frame structure A) and a frame structure with a subcarrier spacing setting μ=1 (hereinafter referred to as frame structure B), compared to frame structure A, frame structure B shows that the subcarrier spacing and RB size are twice as large, and the slot length and symbol length are twice as small. In the case of frame structure B, two slots can constitute one subframe, and 20 subframes can constitute one frame.

[0065] Generalizing the frame structure of a 5G system provides high scalability by ensuring that essential parameters—subcarrier spacing, CP length, and slot length—have integer multiple relationships for each frame structure. Furthermore, a fixed-length subframe of 1 ms can be defined to represent a reference time unit independent of the frame structure.

[0066] The frame structure of the 5G system can be applied to various scenarios. From a cell size perspective, a longer CP length can support larger cells, so frame structure A can support relatively larger cells than frame structure B. From an operating frequency band perspective, a larger subcarrier spacing is advantageous for phase noise recovery in high-frequency bands, so frame structure B can support relatively higher operating frequencies than frame structure A. From a service perspective, a shorter slot length, which is the basic time unit for scheduling, is advantageous for supporting ultra-low latency services such as URLLC, so frame structure B can be relatively more suitable for URLLC services than frame structure A.

[0067] Similar to the coexistence of 5G and LTE / LTE-A mentioned above, system design for coexistence of 6G, which will arrive in the future as communication systems evolve, and existing systems such as 5G or LTE / LTE-A may be required.

[0068] In the following description of the present disclosure, uplink (UL) may refer to a wireless link through which a terminal transmits data or a control signal to a base station, and downlink (DL) may refer to a wireless link through which a base station transmits data or a control signal to a terminal.

[0069] In the initial access phase, when a terminal first accesses the system, the terminal can synchronize downlink time and frequency from a synchronization signal transmitted by a base station through cell search, and obtain a cell identifier (cell ID). Then, the terminal can receive a Physical Broadcast Channel (PBCH) using the obtained cell ID, and obtain a Master Information Block (MIB), which is essential system information, from the PBCH. Additionally, the terminal can obtain cell-common transmission and reception-related control information by receiving system information (System Information Block, SIB) transmitted by the base station. The cell-common transmission and reception-related control information may include random access-related control information, paging-related control information, and common control information for various physical channels.

[0070] The synchronization signal is a signal that serves as a reference for cell search, and the subcarrier spacing can be applied to suit the channel environment, such as phase noise, for each frequency band. In the case of data channels or control channels, the subcarrier spacing can be applied differently depending on the service type in order to support various services as described above. In the 5G system, the combination consisting of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH) is called an SS / PBCH block or SSB.

[0071] In addition to the initial connection procedure described above, the terminal may also receive SSBs to determine whether the radio link quality of the current cell is maintained at a certain level or higher. Furthermore, in a procedure where the terminal performs a handover from the current cell to an adjacent cell, the terminal may also receive SSBs from the adjacent cell to determine the radio link quality of the adjacent cell and obtain time / frequency synchronization with the adjacent cell.

[0072] After the terminal acquires MIB and system information from the base station through the initial access procedure, the terminal can perform a random access procedure to transition the link with the base station to the connected state (or RRC_CONNECTED state). Upon completion of the random access procedure, the terminal transitions to the connected state, enabling one-to-one communication between the base station and the terminal. The random access procedure is described in detail below with reference to FIG. 2.

[0073] FIG. 2 is a diagram illustrating a random access procedure according to one embodiment of the present disclosure.

[0074] Referring to FIG. 2, in the first step (210) of the random access procedure, the terminal transmits a random access preamble to the base station. The random access preamble, which is the first transmission message of the terminal in the random access procedure, may be referred to as message 1. The base station can measure the transmission delay value between the terminal and the base station from the random access preamble and synchronize the uplink. At this time, the terminal can arbitrarily select which random access preamble to use within the random access preamble set given in advance by system information. In addition, the initial transmission power of the random access preamble can be determined according to the path loss between the terminal and the base station measured by the terminal. In addition, the terminal can determine the transmission beam direction of the random access preamble from the synchronization signal received from the base station and transmit the random access preamble.

[0075] In the second step (220), the base station transmits an uplink transmission timing adjustment command to the terminal based on the transmission delay value measured from the random access preamble received in the first step (210). Additionally, the base station may transmit uplink resources and power control commands to be used by the terminal as scheduling information. The scheduling information may include control information regarding the terminal's uplink transmission beam.

[0076] If the terminal does not receive the Random Access Response (RAR) (or message 2), which is scheduling information for message 3, from the base station within a predetermined time in the second step (220), the first step (210) can be performed again. If the first step (210) is performed again, the terminal can increase the probability of the base station receiving the random access preamble by transmitting it while increasing the transmission power of the random access preamble by a predetermined step (power ramping).

[0077] In the third step (230), the terminal transmits uplink data (message 3) including its terminal ID to the base station through an uplink data channel (Physical Uplink Shared Channel, PUSCH) using the uplink resources allocated in the second step (220). The transmission timing of the uplink data channel for transmitting Message 3 may follow the timing control command received from the base station in the second step (220). In addition, the transmission power of the uplink data channel for transmitting Message 3 may be determined by considering the power control command received from the base station in the second step (220) and the power ramping value of the random access preamble. The uplink data channel for transmitting Message 3 may mean the first uplink data signal that the terminal transmits to the base station after transmitting the random access preamble.

[0078] In step 4 (240), if the base station determines that the terminal has performed random access without collision with other terminals, it transmits data (message 4) including the ID of the terminal that transmitted uplink data in step 3 (230) to the terminal. If the terminal receives the signal transmitted by the base station in step 4 (240) from the base station, it can determine that the random access has been successful. In addition, the terminal can transmit HARQ-ACK information indicating whether message 4 was successfully received to the base station through the uplink control channel (Physical Uplink Control Channel, PUCCH).

[0079] If the data transmitted by the terminal in step 3 (230) collides with data from another terminal, causing the base station to fail to receive a data signal from the terminal, the base station may not transmit any more data to the terminal. Accordingly, if the terminal fails to receive the data transmitted from the base station in step 4 (240) within a certain period of time, it may determine that the random access procedure has failed and restart from step 1 (210).

[0080] Upon successful completion of the random access procedure, the terminal transitions to the connected state, enabling one-to-one communication between the base station and the terminal. The base station receives UE capability information from the connected terminal and can adjust scheduling based on the UE capability information. Through UE capability information, the terminal can inform the base station whether it supports a given function and the maximum allowable value of the function supported by the terminal. Therefore, the UE capability information reported by each terminal to the base station may have different values ​​for each terminal.

[0081] For example, a terminal may report UE capability information including at least a portion of the following control information to a base station as UE capability information.

[0082] - Control information related to frequency bands supported by the terminal

[0083] - Control information related to channel bandwidth supported by the terminal

[0084] - Control information related to the maximum modulation method supported by the terminal

[0085] - Control information related to the maximum number of beams supported by the terminal

[0086] - Control information related to the maximum number of layers supported by the terminal

[0087] - Control information related to CSI reporting supported by the terminal

[0088] - Control information on whether the terminal supports frequency hopping

[0089] - Bandwidth-related control information when supporting carrier aggregation (CA)

[0090] - Control information on whether cross carrier scheduling is supported when carrier aggregation is supported.

[0091] FIG. 3 is a diagram illustrating a procedure for a terminal to report terminal capability information to a base station according to one embodiment of the present disclosure.

[0092] Referring to FIG. 3, at step 310, the base station (302) can transmit a UE capability information request message to the terminal (301). In response to the base station's request for UE capability information, the terminal transmits UE capability information to the base station at step 320.

[0093] Next, the bandwidth part (BWP) setting in the 5G communication system will be explained in detail with reference to the drawing.

[0094] Figure 4 is a diagram illustrating an example of bandwidth portion settings in a 5G communication system.

[0095] FIG. 4 shows an example in which the UE bandwidth (400) is set to two bandwidth portions, namely, bandwidth portion #1 (BWP#1) (401) and bandwidth portion #2 (BWP#2) (402). The base station can set one or more bandwidth portions to the UE, and can set the information in below for each bandwidth portion.

[0096]

[0097] Of course, the above example is not limited, and in addition to the above configuration information, various parameters related to the bandwidth portion can be configured for the terminal. The above information can be transmitted from the base station to the terminal via upper layer signaling, for example, RRC (Radio Resource Control) signaling. At least one bandwidth portion among the configured one or more bandwidth portions can be activated. Whether or not the configured bandwidth portion is activated can be semi-statically transmitted from the base station to the terminal via RRC signaling or dynamically transmitted via DCI.

[0098] According to some embodiments, a terminal before RRC connection can receive configuration information for an initial bandwidth portion (Initial BWP) for initial access from a base station through a Master Information Block (MIB). More specifically, during the initial access phase, the terminal can receive configuration information for a control resource set (CORESET) and a search space, where a PDCCH for receiving system information (System Information Block) required for initial access can be transmitted, through the MIB. The control space and search space configured by the MIB can each be regarded as identifier (ID) 0 (CORESET 0, Search Space 0). The base station can notify the terminal of configuration information such as frequency allocation information, time allocation information, and subcarrier spacing settings for control space #0 through the MIB. In addition, the base station can notify the terminal of configuration information for a monitoring cycle and monitoring occasion for control space #0, i.e., configuration information for search space #0, through the MIB. The terminal may consider the frequency range set as control area #0 obtained from the MIB as the initial bandwidth portion for initial connection. At this time, the identifier (ID) of the initial bandwidth portion may be considered as 0.

[0099] The settings for the bandwidth supported by the above 5G can be used for various purposes.

[0100] In some embodiments, when the bandwidth supported by a terminal is smaller than the system bandwidth, this can be supported through bandwidth portion configuration. For example, the base station can configure the bandwidth portion frequency location (configuration information 2) for the terminal, thereby allowing the terminal to transmit and receive data at a specific frequency location within the system bandwidth.

[0101] Additionally, in some embodiments, a base station may configure multiple bandwidth segments for a terminal to support different subcarrier spacing settings. For example, to support data transmission and reception using both 15 kHz and 30 kHz subcarrier spacing for a given terminal, two bandwidth segments may be configured with subcarrier spacings of 15 kHz and 30 kHz, respectively. The different bandwidth segments may be frequency-division multiplexed (FDM), and when data is to be transmitted and received using a specific subcarrier spacing, the bandwidth segment configured for that subcarrier spacing may be activated.

[0102] Furthermore, in some embodiments, the base station may configure bandwidth portions with different bandwidth sizes for the terminal for the purpose of reducing power consumption of the terminal. For example, if the terminal supports a very large bandwidth, for example, 100 MHz, and constantly transmits and receives data using that bandwidth, very large power consumption may occur. In particular, monitoring unnecessary downlink control channels using a large bandwidth of 100 MHz in a situation where there is no traffic may be very inefficient in terms of power consumption. To reduce power consumption of the terminal, the base station may configure a bandwidth portion with a relatively small bandwidth, for example, 20 MHz, for the terminal. In a situation where there is no traffic, the terminal can perform monitoring operations in the 20 MHz bandwidth portion, and when data is generated, it can transmit and receive data using the 100 MHz bandwidth portion according to the instructions of the base station.

[0103] In the method for setting the bandwidth portion, terminals prior to RRC connection (Connected) can receive configuration information for the initial bandwidth portion (Initial BWP) through the MIB during the initial access phase. More specifically, the terminal can receive a control region (i.e., CORESET) for a downlink control channel on which a DCI scheduling a System Information Block (SIB) can be transmitted from the MIB of the PBCH (Physical Broadcast Channel). The bandwidth of the control region set by the MIB can be regarded as the initial bandwidth portion, and the terminal can receive the PDSCH (Physical Downlink Shared Channel) on which the SIB is transmitted through the set initial bandwidth portion. In addition to receiving the SIB, the initial bandwidth portion can also be utilized for paging and random access.

[0104] Next, we will specifically explain downlink control information (DCI) in the 5G system.

[0105] In a 5G system, scheduling information for uplink data (or physical uplink shared channel (PUSCH)) or downlink data (or physical downlink shared channel (PDSCH)) can be transmitted from a base station to a terminal via DCI. The terminal can monitor a DCI format for fallback and a DCI format for non-fallback for the PUSCH or PDSCH. The fallback DCI format can be composed of fixed fields predefined between the base station and the terminal, and the non-fallback DCI format can include configurable fields.

[0106] DCI can be transmitted through the Physical Downlink Control Channel (PDCCH) after going through the channel coding and modulation process. A Cyclic Redundancy Check (CRC) is attached to the DCI message payload, and the CRC can be scrambled with a Radio Network Temporary Identifier (RNTI) corresponding to the identity of the UE. Different RNTIs can be used depending on the purpose of the DCI message, such as UE-specific data transmission, power control command, or random access response. That is, the RNTI is not transmitted explicitly, but is included in the CRC calculation process. When the UE receives a DCI message transmitted on the PDCCH, it verifies the CRC using the assigned RNTI. If the CRC verification result is correct, the UE can know that the message was transmitted to the UE.

[0107] For example, a DCI scheduling a PDSCH for System Information (SI) may be scrambled with SI-RNTI. A DCI scheduling a PDSCH for a Random Access Response (RAR) message may be scrambled with RA-RNTI. A DCI scheduling a PDSCH for a Paging message may be scrambled with P-RNTI. A DCI notifying a Slot Format Indicator (SFI) may be scrambled with SFI-RNTI. A DCI notifying a Transmit Power Control (TPC) may be scrambled with TPC-RNTI. A DCI scheduling a UE-specific PDSCH or PUSCH may be scrambled with C-RNTI (Cell RNTI).

[0108] The base station can operate by applying a predetermined DCI format depending on whether the DCI is scheduling information for downlink data (downlink assignment) for the terminal to be scheduled, scheduling information for uplink data (uplink grant), or DCI for purposes other than data scheduling, such as power control.

[0109] The base station can transmit downlink data to the terminal via the Physical Downlink Shared Channel (PDSCH), a physical channel for downlink data transmission. Scheduling information, such as the specific mapping location in the time and frequency domains of the PDSCH, modulation scheme, HARQ-related control information, and power control information, can be communicated to the terminal by the base station via DCI related to downlink data scheduling information among the DCI transmitted via the PDCCH.

[0110] A terminal can transmit uplink data to a base station via the Physical Uplink Shared Channel (PUSCH), a physical channel for uplink data transmission. Scheduling information, such as specific mapping locations in the time and frequency domains of the PUSCH, modulation schemes, HARQ-related control information, and power control information, can be provided to the terminal by the base station via DCI related to uplink data scheduling information, among the DCIs transmitted via the PDCCH.

[0111] The time-frequency resources to which the PDCCH is mapped are called a Control Resource Set (CORESET). A CORESET can be configured for all or part of the frequency resources of the bandwidth supported by the UE in the frequency domain. In the time domain, it can be configured with one or more OFDM symbols, which can be defined as the CORESET length (Control Resource Set Duration). The base station can configure one or more CORESETs to the UE through higher layer signaling (e.g., System Information, Master Information Block (MIB), Radio Resource Control (RRC) signaling). Configuring a CORESET to the UE may mean providing information such as a CORESET identifier (Identity), the frequency location of the CORESET, and the symbol length of the CORESET. The information that the base station provides to the UE to configure the CORESET may include at least some of the information included in .

[0112]

[0113] CORESET is in the frequency domain It can be composed of RBs and in the time domain ∈{1,2,3} symbols. The PDCCH may be composed of one or more CCEs (Control Channel Elements). One CCE may be composed of six REGs (Resource Element Groups), and a REG may be defined as one RB during one OFDM symbol. Within one CORESET, REGs may be indexed in time-first order, starting with REG index 0 from the first OFDM symbol of the CORESET, the lowest RB.

[0114] Interleaved and non-interleaved transmission methods for PDCCH can be supported. The base station can configure whether to use interleaved or non-interleaved transmission for each CORESET to the terminal through upper layer signaling. Interleaving can be performed in units of REG bundles. A REG bundle can be defined as a set of one or more REGs. The terminal can determine the CCE-to-REG mapping method in the corresponding CORESET based on whether to use interleaved or non-interleaved transmission as configured by the base station, as shown in below.

[0115]

[0116] The base station can inform the terminal of configuration information such as which symbol within the slot the PDCCH is mapped to and the transmission cycle through signaling.

[0117] The search space of the PDCCH is described as follows. The number of CCEs required to transmit the PDCCH can be 1, 2, 4, 8, or 16 depending on the aggregation level (AL), and different numbers of CCEs can be used for link adaptation of the downlink control channel. For example, when AL=L, a single downlink control channel can be transmitted through L CCEs. The UE performs blind decoding, which detects a signal without knowing information about the downlink control channel, and for this purpose, a search space representing a set of CCEs can be defined. The search space is a set of downlink control channel candidates consisting of CCEs that the UE should attempt to decode at a given aggregation level. Since there are various aggregation levels that create a single group with 1, 2, 4, 8, or 16 CCEs, the UE can have multiple search spaces. A search space set can be defined as the set of search spaces at all established aggregation levels.

[0118] Search spaces can be classified into a common search space (CSS) and a UE-specific search space (USS). A certain group of UEs or all UEs can monitor the common search space of the PDCCH to receive cell-common control information, such as dynamic scheduling for the System Information Block (SIB) or paging messages. For example, a UE can receive scheduling allocation information for the PDSCH for receiving system information by monitoring the common search space of the PDCCH. In the case of the common search space, since a certain group of UEs or all UEs must receive the PDCCH, it can be defined as a set of pre-arranged CCEs. UE-specific scheduling allocation information for the PDSCH or PUSCH can be received by the UE by monitoring the UE-specific search space of the PDCCH. The UE-specific search space can be defined UE-specifically as a function of the UE's identity (ID) and various system parameters.

[0119] The base station can set the search space configuration information of the PDCCH to the terminal through higher layer signaling (e.g., SIB, MIB, RRC signaling). For example, the base station can set the number of PDCCH candidates in each aggregation level L, the monitoring period for the search space, the monitoring occasion for each symbol within the slot for the search space, the search space type (common search space or terminal-specific search space), the combination of DCI format and RNTI to be monitored in the corresponding search space, the CORESET index to be monitored for the search space, etc. to the terminal. For example, the parameters for the search space for the PDCCH may include information such as the following .

[0120]

[0121]

[0122] Depending on the configuration information, the base station may configure one or more search space sets for the terminal. In some embodiments, the base station may configure search space set 1 and search space set 2 for the terminal. In search space set 1, the terminal may be configured to monitor DCI format A scrambled with X-RNTI in a common search space, and in search space set 2, the terminal may be configured to monitor DCI format B scrambled with Y-RNTI in a terminal-specific search space.

[0123] According to the configuration information, one or more search space sets may exist in a common search space or a terminal-specific search space. For example, search space set #1 and search space set #2 may be configured as a common search space, and search space set #3 and search space set #4 may be configured as terminal-specific search spaces.

[0124] In a common search space, a terminal can monitor the following combinations of DCI formats and RNTIs, although these are not limited to the following examples.

[0125] - DCI format 0_0 / 1_0 with CRC scrambled by C-RNTI, CS-RNTI, SP-CSI-RNTI, RA-RNTI, TC-RNTI, P-RNTI, SI-RNTI

[0126] - DCI format 2_0 with CRC scrambled by SFI-RNTI

[0127] - DCI format 2_1 with CRC scrambled by INT-RNTI

[0128] - DCI format 2_2 with CRC scrambled by TPC-PUSCH-RNTI, TPC-PUCCH-RNTI

[0129] - DCI format 2_3 with CRC scrambled by TPC-SRS-RNTI

[0130] In a terminal-specific search space, a terminal can monitor the following combinations of DCI formats and RNTIs, although these are not limited to the following examples.

[0131] - DCI format 0_0 / 1_0 with CRC scrambled by C-RNTI, CS-RNTI, TC-RNTI

[0132] - DCI format 1_0 / 1_1 with CRC scrambled by C-RNTI, CS-RNTI, TC-RNTI

[0133] RNTIs may follow the following definitions and uses:

[0134] C-RNTI (Cell RNTI): For terminal-specific PDSCH or PUSCH scheduling purposes.

[0135] TC-RNTI (Temporary Cell RNTI): For terminal-specific PDSCH scheduling purposes

[0136] CS-RNTI (Configured Scheduling RNTI): Used for semi-static terminal-specific PDSCH scheduling.

[0137] RA-RNTI (Random Access RNTI): Used for PDSCH scheduling in the random access phase.

[0138] P-RNTI (Paging RNTI): Used for scheduling PDSCH where paging is transmitted.

[0139] SI-RNTI (System Information RNTI): Used for scheduling PDSCH where system information is transmitted.

[0140] INT-RNTI (Interruption RNTI): Used to indicate whether PDSCH is punctured.

[0141] TPC-PUSCH-RNTI (Transmit Power Control for PUSCH RNTI): Used to indicate power control commands for PUSCH.

[0142] TPC-PUCCH-RNTI (Transmit Power Control for PUCCH RNTI): Used to indicate power control commands for PUCCH.

[0143] TPC-SRS-RNTI (Transmit Power Control for SRS RNTI): Used to indicate power control commands for SRS.

[0144] The DCI formats described above can follow the definitions shown in below.

[0145]

[0146] CORESET p, the search space of aggregation level L in the search space set s can be expressed as the following mathematical formula.

[0147]

[0148] - L: Integration level

[0149] - n CI : Carrier Index

[0150] - N CCE,p : Total number of CCEs existing within the control resource set p

[0151] - n μ s,f : slot index

[0152] - M (L) p,s,max : Number of PDCCH candidates for aggregation level L

[0153] - m snCI = 0, ..., M (L) p,s,max -1: PDCCH candidate index of aggregation level L

[0154] - i = 0, ..., L-1

[0155] - , , , , ,

[0156] - n RNTI : Terminal identifier

[0157] The value can be 0 for a common search space.

[0158] In the case of a terminal-specific search space, the value may correspond to a value that changes according to the terminal's ID (C-RNTI or ID set to the terminal by the base station) and time index.

[0159] Below, we will specifically describe how a terminal measures channel conditions and reports them to a base station in a 5G communication system.

[0160] Channel state information (CSI) may include the following information:

[0161] - Channel Quality Indicator (CQI): CQI index indication information consisting of a modulation method and coding rate that satisfies the minimum reception error rate of a predefined PDSCH.

[0162] - Precoding Matrix Indicator (PMI): Precoding matrix indicator information selected by the terminal.

[0163] - CRI (CSI-RS resource indicator): CSI-RS information measured by the terminal

[0164] - RI (Rank Indicator): Rank indication information selected by the terminal

[0165] - LI (Layer indicator): Indication information for the best layer among the precoding matrices reported by the terminal.

[0166] - SSBRI (SS / PBCH block resource indicator): SSB information measured by the terminal

[0167] - L1-RSRP (Reference Signal Received Power): L1 RSRP information measured by the terminal

[0168] The base station can control time and frequency resources for the aforementioned CSI measurement and reporting of the terminal.

[0169] For CSI measurement and reporting operations, 'Aperiodic', 'Semi-Persistent', and 'Periodic' methods are supported, and the base station can set which method to use to the terminal through signaling. The semi-persistent CSI reporting method supports 'PUCCH-based semi-persistent (semi-PersistentOnPUCCH)' and 'PUSCH-based semi-persistent (semi-PersistentOnPUSCH)'. In the case of periodic or semi-persistent CSI reporting methods, the terminal can receive PUCCH or PUSCH resources to transmit CSI from the base station through upper layer signaling. The period and slot offset of the PUCCH or PUSCH resources to transmit CSI can be given by setting the subcarrier spacing of the uplink (UL) bandwidth part where the CSI report is set to be transmitted. In the case of the aperiodic CSI reporting method, the terminal can schedule PUSCH resources for transmitting CSI from the base station through L1 signaling (DCI format 0_1 ​​described above).

[0170] Aperiodic CSI reporting of a terminal can use PUSCH, periodic CSI reporting can use PUCCH, and semi-persistent CSI reporting can be performed using PUSCH when triggered or activated by DCI, or PUCCH after being activated by MAC control element (MAC CE).

[0171] Aperiodic CSI reporting can be triggered by the “CSI request” field of the aforementioned DCI format 0_1 ​​corresponding to the scheduling DCI for PUSCH.

[0172] As another way to support ultra-high-speed data services, 5G systems can support ultra-wide bandwidth signal transmission and reception of tens to hundreds of MHz, or even several GHz. The ultra-wide bandwidth signal transmission and reception can be supported through a single component carrier (CC), or through carrier aggregation (CA) technology that combines multiple component carriers. When a mobile communication service provider cannot secure a frequency with sufficient bandwidth to provide ultra-high-speed data services through a single component carrier, carrier aggregation technology can increase the total frequency bandwidth by combining individual component carriers with relatively small bandwidths, thereby enabling ultra-high-speed data services.

[0173] As mentioned above, the frequency band utilized by 5G systems is wide, ranging from hundreds of MHz to tens of GHz. Figure 5 shows the interrelationship among frequency bands, coverage, and bandwidth. Figure 5 shows the frequency bands of low band (501), mid band (502), high band (503), and ultra high band (504). In general, the lower the frequency band, the greater the coverage due to relatively small path loss, and the higher the frequency band, the smaller the coverage due to relatively high path loss. In the low frequency band, the frequency available for mobile communication is fragmented, resulting in a small bandwidth, whereas in the high frequency band, it is relatively easy to secure a wide bandwidth, making it suitable for ultra-high-speed data services. As mobile communication systems evolve, efforts are being made to discover and utilize new frequency bands. For example, the next-generation mobile communication system, 6G (6 th In the 5G mobile communication system, the 7 to 15 GHz band, called the upper midband, is being considered as one of the candidate frequencies. Typically, mobile communication operators secure multiple frequency bands to provide mobile communication services to users. For example, mobile communication operators can combine existing LTE system frequency bands with newly secured 5G system frequency bands to operate a combined LTE and 5G system. As another example, mobile communication operators can secure frequency bands for 5G systems across multiple bands and then provide mobile communication services through 5G CA by combining the frequencies of the multiple bands. Similarly, 6G mobile communication systems can provide mobile communication services by combining 6G frequencies with existing 4G or 5G frequencies, or by combining 6G frequencies alone.

[0174] As mentioned above, since characteristics such as coverage and bandwidth vary depending on the frequency band, mobile communication services that combine multiple frequency bands are becoming more active than mobile communication services that rely on a single frequency band.

[0175] Below, we describe dynamic spectrum sharing (DSS). DSS, or co-existence, refers to a scenario where signals from different communication systems are transmitted on overlapping frequencies within the same frequency band or frequency domain. These different communication systems can include LTE, 5G, and 6G.

[0176] In a system operating DSS, which consists of a first communication system and a second communication system, the base station can adjust whether to schedule a terminal for the first communication system or the second communication system based on changes in traffic between the first and second communication systems. For example, the first communication system may be 5G, and the second communication system may be 6G. In this case, DSS can be used to promote 6G expansion without additional frequency allocation by maximizing existing frequencies during the initial 6G system installation, when 5G traffic gradually decreases and 6G traffic gradually increases. From the perspective of a telecommunications operator, DSS operation allows for efficient utilization of already secured frequencies without wasting them.

[0177] FIG. 6a and FIG. 6b are diagrams illustrating the concept of DSS according to one embodiment of the present disclosure.

[0178] Figure 6a shows an example where 5G and 6G systems overlap in the same frequency band.

[0179] Referring to Figure 6a, the base station can determine when to schedule 5G and when to schedule 6G based on the distribution of 5G and 6G traffic. Figure 6a illustrates an example in which 5G is scheduled during the T1 time interval and 6G is scheduled during the T2 time interval.

[0180] Figure 6b shows an example where 5G and 6G systems overlap partially in the frequency domain.

[0181] Referring to Fig. 6b, an example is shown in which 5G is scheduled in the F1 frequency domain during the T1 time interval, and 6G is scheduled in the F2 frequency domain during the T1 time interval. In addition, an example is shown in which 6G is scheduled in the F3 (= F1+F2) frequency domain during the T2 time interval. Both Fig. 6a and 6b show that 5G and 6G share time / frequency resources, but by preventing 5G and 6G from colliding in the time / frequency resources at any moment, transmission / reception performance degradation can be minimized.

[0182] Although the above-described FIGS. 6a and 6b illustrate that 5G and 6G each use continuous time / frequency resources, it is also possible for 5G and 6G to share time / frequency resources by dividing them into RE units. For example, time / frequency resource sharing is possible by mapping the CSI-RS of a 5G system to certain REs and mapping 6G signals to the remaining time / frequency resources.

[0183] The operation of the system proposed in the present disclosure is described below through specific examples.

[0184] The main point of the present disclosure is to propose a method for configuring a mobile communication system to transmit a signal of a first communication system or a signal of a second communication system to overlapping radio resources through dynamic spectrum sharing (DSS), thereby preventing a signal of a predetermined communication system to be transmitted from colliding with a signal of another communication system at any instant in the radio resources, and enabling a terminal to accurately perform transmission and reception operations without confusion about which communication system the signal is from.

[0185] The above embodiments are conveniently distinguished to explain implementations according to the present disclosure, and all or part of the embodiments may be selectively combined and configured to achieve various implementations through the present disclosure. Although each embodiment of the present disclosure is described based on the first communication system being configured as 5G and the second communication system being configured as 6G, it can be generally applied to other mobile communication systems unless otherwise specified. For convenience of description below, "5G" is added to channels / signals of a 5G system, and "6G" is added to channels / signals of a 6G system to distinguish them. For example, a PDCCH for 5G is referred to as a 5G PDCCH, and a PDCCH for 6G is referred to as a 6G PDCCH.

[0186] Hereinafter, a description of each specific embodiment is provided. The present invention may include multiple embodiments, and each embodiment may be implemented independently, but as long as they are not mutually exclusive, the multiple embodiments may be implemented in combination with each other. Such combinations encompass various modifications and variations of the present invention, and may be implemented in various ways depending on technical needs or application environments. Even if the multiple embodiments use different approaches to achieve the purpose of the invention, as long as the embodiments of the present invention are not technically mutually exclusive, they may be used simultaneously or complementarily. Such combinations may be modified in various ways depending on technical requirements or specific application cases, and the present invention may encompass various embodiments that include such modifications and combinations.

[0187] <First embodiment>

[0188] In the first embodiment, when a mobile communication system is configured to transmit a signal of a first communication system or a signal of a second communication system to overlapping radio resources, the base station notifies the terminal of configuration information of a physical channel or physical signal of the first communication system, information on whether the physical channel or physical signal is actually transmitted (hereinafter referred to as control information set #1), etc. As an example, the base station may notify the terminal of control information set #1 through upper layer signaling, L1-signaling (DCI format), or a combination thereof. Alternatively, some control information of control information set #1 may be notified through upper layer signaling, and other control information may be notified through L1 signaling. The control information set #1 is control information related to a physical channel or physical signal with a relatively high transmission frequency, and includes at least one of the following control information.

[0189] - 5G bandwidth part (BWP) related control information: Information that includes at least one of the specific control information in described above, and represents information related to 5G BWP. 5G BWP related information can be defined independently for downlink and uplink. In addition, the base station can distinguish whether the 5G BWP is an initial BWP and inform the terminal. In addition, the base station can additionally inform the terminal whether the 5G BWP is activated.

[0190] - Control information related to the Control Resource Set (CORESET), which is the time-frequency resource to which the 5G PDCCH is mapped: Information including at least one of the specific control information in described above, indicating control information related to the 5G CORESET. In addition, the base station can distinguish whether the 5G CORESET is CORESET#0 required for the initial access of the terminal to the 5G system and inform the terminal of this.

[0191] - 5G PDCCH search space related control information: Information including at least one of the specific control information in described above, indicating 5G search space related control information. In addition, the base station can distinguish whether the 5G search space is search space #0 required for the terminal's initial access to the 5G system and inform the terminal of this.

[0192] - Control information indicating whether 5G PDCCH is actually transmitted: The 5G CORESET-related control information and the 5G search space-related control information only indicate candidate radio resources to which the 5G PDCCH can be mapped and transmitted, and do not indicate whether the 5G PDCCH is actually transmitted. By notifying the terminal of whether the 5G PDCCH is actually transmitted, the base station can utilize the radio resource for 6G signal transmission as needed if the 5G PDCCH is not actually transmitted, or prevent the terminal from unnecessarily monitoring the 5G PDCCH. In order to indicate whether the 5G PDCCH is actually transmitted, the base station can link the control information of the related 5G CORESET or 5G search space with whether the 5G PDCCH is actually transmitted and notify the terminal of the result.

[0193] The terminal can determine whether the radio resource is being used for signal transmission of the 5G system from the control information set #1 provided by the base station. If the radio resource is not being used for signal transmission of the 5G system, the terminal recognizes that the radio resource can be used for signal transmission of the 6G system, and can receive a 6G signal or perform 6G transmission on the radio resource.

[0194] FIG. 7 is a conceptual diagram illustrating the operations of a base station and a terminal according to the first embodiment. In the example of FIG. 7, the base station configures a 5G BWP (701) over the F2 frequency domain during the T1 time interval. In the example of FIG. 7, it is assumed that radio resources not configured as the 5G BWP can be used for 6G. The T1 time interval may be a slot, a subframe, a frame, etc., and the F2 frequency domain may be a RB, an RB group, etc. If 5G traffic occurs, the base station can transmit and receive 5G traffic with the 5G terminal through the 5G BWP. If 5G traffic does not occur, the 5G BWP may be occupied for 5G but may not actually be used. If 5G traffic does not occur but 6G traffic does occur, the base station can convert the 5G BWP from 5G to 6G and use it for 6G traffic for efficient use of radio resources. That is, in this case, the base station can use the radio resources of the 5G BWP to transmit and receive 6G traffic with the 6G terminal. To achieve this, the base station notifies the 6G terminal of the 5G BWP-related control information through signaling. Additionally, the base station can inform the terminal of whether the configured 5G BWP is actually used for 5G traffic or is available for 6G use.

[0195] Similarly, the operation of the base station and the terminal related to the 5G CORESET can be explained with reference to FIG. 8. In the example of FIG. 8, the base station configures the 5G CORESET (801) over the F2 frequency domain during the T3 time interval. The unit of the T3 time interval may be a symbol, a slot, etc., and the unit of the F2 frequency domain may be an RB, an RB group, etc. If 5G traffic occurs, the base station can transmit a 5G PDCCH including scheduling information for the 5G traffic to the 5G terminal through the 5G CORESET. The base station and the terminal can transmit and receive 5G traffic through the radio resources indicated by the scheduling information. If 5G traffic does not occur, the 5G CORESET may be occupied for 5G but may not actually be used. If 6G traffic occurs but no 5G traffic occurs, the base station can convert the 5G CORESET from 5G to 6G for efficient use of radio resources. In other words, in this case, the base station can use the radio resources of the 5G CORESET for 6G communication with a 6G terminal. For this operation, the base station notifies the 6G terminal of the 5G CORESET-related control information through signaling. Additionally, the base station can inform the terminal of information such as whether the configured 5G CORESET is actually used for 5G PDCCH transmission or is available for 6G.

[0196] <Second embodiment>

[0197] In the second embodiment, when a mobile communication system is configured to transmit a signal of a first communication system or a signal of a second communication system to overlapping radio resources, the base station notifies the terminal of configuration information of a physical channel or physical signal of the first communication system, information on whether the physical channel or physical signal is actually transmitted (hereinafter referred to as control information set #2), etc. As an example, the base station may notify the terminal of control information set #2 through upper layer signaling, L1-signaling (DCI format), or a combination thereof. Alternatively, some control information of control information set #2 may be notified through upper layer signaling, and other control information may be notified through L1 signaling. The control information set #2 is control information related to a physical channel or physical signal with a relatively low transmission frequency, and includes at least one of the following control information.

[0198] - Control information related to 5G SSB configuration: Control information related to the time / frequency resources to which 5G SSB is mapped, which may be composed of the following information.

[0199] ■ ssb-PeriodicityServingCell: The transmission period of 5G SSB can be expressed in units such as ms, subframe, and frame.

[0200] ■ ssbSubcarrierSpacing: Indicates the subcarrier spacing of 5G SSB.

[0201] ■ ssbFrequency: Indicates the frequency domain information to which 5G SSB is mapped.

[0202] ■ ssb-PositionsInBurst: Indicates the time domain information to which 5G SSB is mapped. A predetermined mapping pattern can be defined in advance and whether or not it is mapped can be indicated in bitmap format.

[0203] ■ ssb-Index: This is the index of 5G SSB and indicates beam information.

[0204] - Control information indicating whether 5G SSB is actually transmitted: Normally, the base station maps 5G SSB to time / frequency resources according to the 5G SSB configuration-related control information and transmits it to the terminal. However, if necessary, for example, for purposes such as base station energy saving, the transmission of 5G SSB that was intended to be transmitted according to the configuration information may be omitted or adjusted. In this case, the base station can inform the 6G terminal of whether 5G SSB is actually transmitted, thereby indicating whether the corresponding radio resource can be utilized for 6G signal transmission.

[0205] - Control information related to 5G CSI-RS configuration: Control information related to time / frequency resources to which 5G CSI-RS is mapped, which may be composed of the following information.

[0206] ■ CSI-ResourcePeriodicityAndOffset: Information indicating the transmission period of 5G CSI-RS and the offset, which is the time interval from the reference point.

[0207] ■ CSI-RS-ResourceMapping: Information indicating the symbol location and frequency domain location where 5G CSI-RS is mapped.

[0208] ■ subcarrierSpacing: Subcarrier spacing of 5G CSI-RS

[0209] - Control information indicating whether 5G CSI-RS is actually transmitted: Similar to the case of 5G SSB described above, the base station can inform the 6G terminal whether 5G CSI-RS is actually transmitted, thereby indicating whether the corresponding radio resources can be used for 6G signal transmission.

[0210] The terminal can determine whether the radio resource is being used for signal transmission of the 5G system from the control information set #2 provided by the base station. If the radio resource is not being used for signal transmission of the 5G system, the terminal recognizes that the radio resource can be used for signal transmission of the 6G system, and can receive a 6G signal or perform 6G transmission on the radio resource.

[0211] Figure 9 is a conceptual diagram showing the operation of a base station and a terminal according to the second embodiment.

[0212] In the example of FIG. 9, the base station configures 5G SSB#0 (900) over the F2 frequency domain during the T3 time period. 5G SSB#0 represents a 5G SSB corresponding to the 0th beam. The unit of the T3 time period may be a symbol, a slot, etc., and the unit of the F2 frequency domain may be an RB, an RB group, etc. For example, T3 is 4 symbols, and F2 is 20 RBs. Similarly, FIG. 9 shows that 5G SSB#1 (901), 5G SSB#2 (902), and 5G SSB#3 (903) are configured over the same frequency domain and different time periods as the 5G SSB#0, respectively. As described above, the base station informs the 6G terminal of the transmission period at which the 5G SSB#0 to 5G SSB#3 are transmitted, the time domain and frequency domain information to which the 5G SSB is mapped, and whether the 5G SSB is actually transmitted, thereby efficiently using radio resources by converting the corresponding resources to 6G use when necessary. For example, in the case of FIG. 9, the time domain mapping pattern of the 5G SSB can be expressed as a 4-bit bitmap, and if the 5G SSB is mapped, it can be represented as '1', and if it is not mapped, it can be represented as '0'. For example, if the base station maps 5G SSB#0 and 5G SSB#1 to preset radio resources and does not map 5G SSB#2 and 5G SSB#3, the base station can represent the 5G SSB mapping pattern as '1100'. In this case, the first bit of the bitmap corresponds to 5G SSB#0, and the remaining bits correspond to the 5G SSB index in ascending order.

[0213] If the base station maps and transmits all of the preset 5G SSB#0 to 5G SSB#3, the bitmap can be displayed as '1111'. The 5G SSBs can be multiplexed at different locations in the frequency domain. In this case, the bitmap can be extended in a way that indicates the frequency domain location. For example, if 5G SSB#A and 5G SSB#B are set to be mapped to different frequency domains, the frequency domain mapping pattern can be expressed in a 2-bit bitmap format. Of course, it is also possible to extend in a 2-dimensional manner by combining the time domain mapping pattern and the frequency domain mapping pattern.

[0214] In the example of FIG. 9, if there are no 5G terminals to be serviced by the base station at any given moment, the base station can suspend or minimize 5G SSB transmission to save base station energy. If there are no 5G terminals to be serviced by the base station at any given moment, but 6G traffic for 6G terminals increases, the base station can convert the radio resources preset for 5G SSB transmission from 5G to 6G for efficient use of radio resources. That is, in this case, the base station can use the radio resources for 5G SSB for 6G communication with 6G terminals. For this operation, the base station can notify the 6G terminal of the 5G SSB-related control information through signaling. Additionally, the base station can notify the terminal of information such as whether the radio resources preset for 5G SSB are actually used for 5G SSB or are available for 6G.

[0215] Although not illustrated separately in the example of FIG. 9, for 5G CSI-RS, in a similar manner to the 5G SSB, related control information can be signaled to 6G terminals to ensure efficient use of radio resources. For example, the base station can convert radio resources preset for 5G CSI-RS transmission from 5G to 6G for efficient use of radio resources. That is, in this case, the base station can use the radio resources of the 5G CSI-RS for 6G communication with the 6G terminal. For this operation, the base station can signal the 6G terminal about the control information related to the 5G CSI-RS. Additionally, the base station can inform the terminal of information such as whether the radio resources configured for the 5G CSI-RS are actually used for 5G CSI-RS or are available for 6G.

[0216] <Third embodiment>

[0217] The third embodiment describes examples of terminal and base station procedures according to a preferred embodiment of the present invention. The terminal and base station procedures of the third embodiment can be performed in combination with at least one of the first and second embodiments.

[0218] FIG. 10 is a diagram illustrating an example of a terminal procedure applied when operating a mobile communication system configured so that base stations can transmit signals of a first communication system or a second communication system to overlapping wireless resources, according to an embodiment of the present invention. It is assumed that the first communication system is configured as 5G and the second communication system is configured as 6G.

[0219] At step 1001, the terminal can receive the above-described 'control information set #1' or 'control information set #2' from the base station.

[0220] In step 1002, the terminal can refer to the 'control information set #1' or 'control information set #2' to determine whether a 5G signal is being transmitted. For example, the terminal can refer to the 'control information set #1' or 'control information set #2' to identify resources related to the transmission of 5G signals (resources on which 5G signals can be transmitted), and determine whether the resources related to the transmission of the 5G signal are actually being used for 5G signal transmission.

[0221] In step 1003, the terminal transmits and receives a 6G signal scheduled by the base station depending on whether the 5G signal is transmitted. For example, if the resource related to the transmission of the 5G signal is not actually used for the transmission of the 5G signal, and the base station schedules a resource including a resource related to the transmission of the 5G signal to the terminal for a 6G signal, the terminal recognizes that the radio resource to which the 5G signal could have been mapped and transmitted has also been used for the transmission of the 6G signal, and performs a 6G signal reception operation. If the resource related to the transmission of the 5G signal is actually used for the transmission of the 5G signal, and the base station schedules a resource including a resource related to the transmission of the 5G signal to the terminal for a 6G signal, the terminal recognizes that the 6G signal has been mapped and transmitted to the remaining radio resources excluding the radio resource to which the 5G signal is mapped and transmitted, and performs a 6G signal reception operation. The above-described terminal operation can be applied to the uplink in the same manner, and can be used for the 6G signal transmission operation of the terminal. For example, the base station can inform the 6G terminal of the radio resource setting for uplink 5G signal transmission of the 5G terminal and whether or not actual transmission is performed, and can utilize the radio resource for uplink 6G signal transmission of the 6G terminal. For example, if the resource related to transmission of the 5G signal is not actually used for 5G signal transmission, and the base station schedules the resource including the resource related to transmission of the 5G signal to the terminal for 6G signal, the terminal recognizes that the radio resource to which the 5G signal was originally mapped and could have been transmitted was also used for 6G signal transmission, and performs a 6G signal transmission operation.If the resources related to transmission of the above 5G signal are actually used for transmission of the 5G signal, and the base station schedules the resources including the resources related to transmission of the 5G signal to the terminal for transmission of the 6G signal, the terminal recognizes that the 6G signal is mapped and transmitted to the remaining wireless resources except for the wireless resources to which the 5G signal is mapped and transmitted, and performs a 6G signal transmission operation.

[0222] The steps described above may be modified, omitted, changed in order, or steps not described may be added to carry out the present invention.

[0223] FIG. 11 is a diagram illustrating an example of a base station procedure applied when operating a mobile communication system configured to transmit signals of a first communication system or a second communication system to overlapping radio resources according to an embodiment of the present invention. It is assumed that the first communication system is configured as 5G and the second communication system is configured as 6G.

[0224] In step 1101, the base station determines whether actual 5G signal transmission is possible on resources associated with 5G signal transmission. The base station can determine whether to transmit a 5G signal based on factors such as the presence of 5G terminals to be serviced. For example, if the base station does not have any 5G terminals to be serviced, transmission of the 5G SSB signal that was configured for transmission can be omitted.

[0225] In step 1102, the base station may transmit the above-described 'control information set #1' or 'control information set #2' to the terminal. The 'control information set #1' or 'control information set #2' may include information on resources related to transmission of the above-described 5G signal (resources on which 5G signals can be transmitted) and information on whether the resources related to transmission of the 5G signal are actually used for transmission of the 5G signal.

[0226] In step 1103, the base station schedules 6G signals to the terminal. At this time, the determination result of step 1101 may be referenced and applied to the radio resource mapping of the 6G signal. For example, if the base station skips the transmission of the 5G signal, the 6G signal may be mapped to resources related to the transmission of the 5G signal and transmitted. Alternatively, if the base station does not skip the transmission of the 5G signal, the 6G signal may be mapped and transmitted without excluding resources related to the transmission of the 5G signal.

[0227] The steps described above may be modified, omitted, changed in order, or steps not described may be added to carry out the present invention.

[0228] As a modified example of the third embodiment, the base station may inform the terminal of a higher priority system among the 5G and 6G systems, as needed. For example, the base station may inform the terminal of at least one of the following options:

[0229] - 5G system priority mode: A 6G terminal that has received a signal of '5G system priority mode' can perform a 6G signal transmission and reception operation depending on whether a 5G signal is transmitted or not, according to the description of the above-described embodiments. For example, if a 5G signal is transmitted in a resource related to 5G signal transmission, the terminal can transmit and receive a 6G signal excluding the resource related to 5G signal transmission, and if a 5G signal is not transmitted in a resource related to 5G signal transmission, the terminal can transmit and receive a 6G signal including the resource related to 5G signal transmission.

[0230] - 6G System Priority Mode: A 6G terminal that has received the '6G System Priority Mode' signal can transmit and receive 6G signals regardless of whether a 5G signal is being transmitted. For example, the terminal can transmit and receive 6G signals, including resources related to 5G signal transmission, both when a 5G signal is being transmitted and when a 5G signal is not being transmitted.

[0231] In one embodiment, the terminal and the base station define '5G system priority mode' as the default operation, and the terminal may operate in '5G system priority mode' without separate additional signaling from the base station. Alternatively, the terminal and the base station may define '6G system priority mode' as the default operation, and the terminal may operate in '6G system priority mode' without separate additional signaling from the base station.

[0232] In the embodiments described above, in addition to signaling between a base station and a terminal, signaling between base stations can be additionally defined and operated. For example, just as a base station supports terminal operation by transmitting the above-described 'control information set #1' or 'control information set #2' to a terminal, a base station can support scheduling operations of adjacent base stations by providing information including or corresponding to the 'control information set #1' or 'control information set #2' to one or more adjacent base stations. The adjacent base station can use the provided information to schedule terminals within the corresponding base station or to control interference between base stations. As another example, a base station can signal to the adjacent base station whether it is the '5G system priority mode' or the '6G system priority mode'.

[0233] In the first and second embodiments, when the units of the time-frequency radio resources of the 5G system and the 6G system are the same, the utilization of the radio resources between them can be improved. For example, when the subcarrier intervals applied by the 5G system and the 6G system are the same, and the time-domain intervals for scheduling, such as symbol, slot, subframe, or frame boundaries, are identical, and the frequency-domain intervals for scheduling, such as RB and RB group boundaries, are identical, effective operation can be expected. However, even when the subcarrier intervals applied by the two systems are different, if the subcarrier intervals maintain a difference of at least an integer multiple of N, and the time or frequency-domain boundaries are also identical within an integer multiple of N, efficient use of radio resources is possible.

[0234] FIG. 12 is a diagram illustrating an example of a terminal transceiver device in a wireless communication system according to an embodiment of the present disclosure. For convenience of explanation, the illustration and description of devices not directly related to the present disclosure may be omitted.

[0235] Referring to FIG. 12, the terminal may be configured with a transmitter (1204) including an uplink transmission processing block (1201), a multiplexer (1202), and a transmission RF block (1203), a receiver (1208) including a downlink reception processing block (1205), a demultiplexer (1206), and a reception RF block (1207), and a control unit (1209). As described above, the control unit (1209) may control each of the configuration blocks of the receiver (1208) for receiving a data channel or control channel transmitted by the base station and each of the configuration blocks of the transmitter (1204) for transmitting an uplink signal.

[0236] In the transmitter (1204) of the terminal, the uplink transmission processing block (1201) can generate a signal to be transmitted by performing processes such as channel coding and modulation. The signal generated in the uplink transmission processing block (1201) can be multiplexed with another uplink signal by a multiplexer (1202), and then transmitted to the base station after signal processing in the transmission RF block (1203).

[0237] The receiving unit (1208) of the terminal demultiplexes the signal received from the base station and distributes it to each downlink receiving processing block. The downlink receiving processing block (1205) can perform processes such as demodulation and channel decoding on the downlink signal of the base station to obtain control information or data transmitted by the base station. The receiving unit (1208) of the terminal can support the operation of the control unit (1209) by applying the output result of the downlink receiving processing block to the control unit (1209).

[0238] FIG. 13 is a block diagram showing an example of a configuration of a terminal according to one embodiment of the present disclosure.

[0239] As illustrated in FIG. 13, the terminal of the present disclosure may include a processor (1330), a transceiver (1310), and a memory (1320). However, the components of the terminal are not limited to the examples described above. For example, the terminal may include more or fewer components than the components described above. In addition, the processor (1330), the transceiver (1310), and the memory (1320) may be implemented in the form of a single chip. According to one embodiment, the transceiver (1310) of FIG. 13 may include the transmitter (1204) and receiver (1208) of FIG. 12. In addition, the processor (1330) of FIG. 13 may include the control unit (1209) of FIG. 12.

[0240] According to one embodiment, the processor (1330) may control a series of processes that enable the terminal to operate according to the embodiments of the present disclosure described above. For example, according to the embodiments of the present disclosure, the components of the terminal may be controlled to perform a transmission and reception method of the terminal depending on whether a 5G signal is transmitted. There may be one or more processors (1330), and the processors (1330) may execute a program stored in the memory (1320) to perform transmission and reception operations of the terminal in a wireless communication system that applies the operations of the present disclosure described above.

[0241] The transceiver (1310) can transmit and receive signals with a base station. The signals transmitted and received with the base station can include control information and data. The transceiver (1310) can be configured with an RF transmitter that up-converts and amplifies the frequency of a transmitted signal, and an RF receiver that low-noise amplifies and frequency-converts a received signal. However, the transceiver (1310) is only one embodiment, and the components of the transceiver (1310) are not limited to the RF transmitter and RF receiver. In addition, the transceiver (1310) can receive a signal through a wireless channel and output it to the processor (1330), and transmit a signal output from the processor (1330) through the wireless channel.

[0242] According to one embodiment, the memory (1320) can store programs and data necessary for the operation of the terminal. In addition, the memory (1320) can store control information or data included in signals transmitted and received by the terminal. The memory (1320) can be configured as a storage medium or a combination of storage media such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD. In addition, there can be a plurality of memories (1320). According to one embodiment, the memory (1320) can store a program for performing transmission and reception operations of the terminal depending on whether or not a 5G signal is transmitted, which are embodiments of the present disclosure described above.

[0243] FIG. 14 is a block diagram showing an example of a configuration of a base station according to one embodiment of the present disclosure.

[0244] As illustrated in FIG. 14, the base station of the present disclosure may include a processor (1430), a transceiver (1410), and a memory (1420). However, the components of the base station are not limited to the examples described above. For example, the base station may include more or fewer components than the components described above. In addition, the processor (1430), the transceiver (1410), and the memory (1420) may be implemented in the form of a single chip.

[0245] The processor (1430) may control a series of processes so that the base station can operate according to the embodiments of the present disclosure described above. For example, the processor may control components of the base station to perform a method for scheduling terminals based on whether or not a 5G signal is transmitted according to the embodiments of the present disclosure. There may be one or more processors (1430), and the processors (1430) may execute a program stored in the memory (1420) to perform the method for scheduling terminals based on whether or not a 5G signal is transmitted according to the present disclosure described above.

[0246] The transceiver (1410) can transmit and receive signals with the terminal. The signals transmitted and received with the terminal can include control information and data. The transceiver (1410) can be configured with an RF transmitter that up-converts and amplifies the frequency of a transmitted signal, an RF receiver that low-noise amplifies the received signal and down-converts the frequency, etc. However, the transceiver (1410) is only one embodiment, and the components of the transceiver (1410) are not limited to the RF transmitter and RF receiver. In addition, the transceiver (1410) can receive a signal through a wireless channel and output it to the processor (1430), and transmit a signal output from the processor (1430) through the wireless channel.

[0247] According to one embodiment, the memory (1420) may store programs and data necessary for the operation of the base station. In addition, the memory (1420) may store control information or data included in signals transmitted and received by the base station. The memory (1420) may be configured as a storage medium or a combination of storage media, such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD. In addition, there may be a plurality of memories (1420). According to one embodiment, the memory (1420) may store a program for performing a method for scheduling a terminal depending on whether a 5G signal is transmitted, which are embodiments of the present disclosure described above.

[0248] In the specific embodiments of the present disclosure described above, components included in the present disclosure are expressed singularly or plurally, depending on the specific embodiment presented. However, the singular or plural expressions are selected to suit the presented situation for convenience of explanation, and the present disclosure is not limited to singular or plural components. Components expressed in plural may be composed of singular elements, or components expressed in singular may be composed of plural elements.

[0249] Meanwhile, the present specification and drawings have disclosed preferred embodiments of the present disclosure, and although specific terms have been used, they have been used in a general sense only to easily explain the technical contents of the present disclosure and to help understand the invention, and are not intended to limit the scope of the present disclosure. It will be apparent to those skilled in the art to which the present disclosure pertains that other modified examples based on the technical idea of ​​the present disclosure are possible in addition to the embodiments disclosed herein. In addition, each of the above embodiments may be combined and operated with each other as needed. For example, the first embodiment, the second embodiment, and the third embodiment may be implemented independently, or at least one embodiment may be implemented in combination with each other.

[0250] While the detailed description of this disclosure has described specific embodiments, it should be understood that various modifications are possible without departing from the scope of this disclosure. Therefore, the scope of this disclosure should not be limited to the described embodiments, but should be defined not only by the scope of the claims described below, but also by equivalents thereof.

Claims

1. In a method performed by a terminal of a wireless communication system, A step of receiving a set of control information including information about a first resource associated with a first communication system; A step of determining whether the first resource is used for a first signal related to the first communication system based on the control information set; and A method characterized by comprising the step of transmitting or receiving a second signal related to a second communication system based on a second resource that overlaps at least partly with the first resource according to the above decision.

2. In paragraph 1, The above control information set is: Information about the bandwidth part (BWP) of the first communication system, Information about a control resource set (CORESET) related to a physical downlink control channel (PDCCH) of the first communication system, Information about the search space associated with the PDCCH of the first communication system, or Information indicating whether the PDCCH of the first communication system is transmitted; A method characterized by comprising at least one of:

3. In paragraph 1, The above control information set is: Information about resources for a synchronization signal block (SSB) of the first communication system; Information indicating whether the first communication system transmits SSB; Information about resources for a channel state information-reference signal (CSI-RS) of the first communication system, or Information indicating whether the CSI-RS of the first communication system is transmitted, A method characterized by comprising at least one of:

4. In paragraph 1, Further comprising a step of determining a communication system having a higher priority among the first communication system and the second communication system, If the first resource is used for the first signal and the first communication system has a high priority, at least a portion of the second resource overlapping with the first resource is not used for transmission or reception of the second signal, A method characterized in that when the first resource is used for the first signal and the second communication system has a high priority, at least a portion of the second resource overlapping with the first resource is used for transmission or reception of the second signal.

5. In a method performed by a base station of a wireless communication system, A step of determining whether a first resource associated with a first communication system is used for a first signal associated with the first communication system; a step of transmitting a control information set including information about the first resource; and A method characterized by comprising the step of transmitting or receiving a second signal related to a second communication system based on a second resource that overlaps at least partly with the first resource according to the above decision.

6. In paragraph 5, The above control information set is: Information about the bandwidth part (BWP) of the first communication system, Information about a control resource set (CORESET) related to a physical downlink control channel (PDCCH) of the first communication system, Information about the search space associated with the PDCCH of the first communication system, or Information indicating whether the PDCCH of the first communication system is transmitted; A method characterized by comprising at least one of:

7. In paragraph 5, The above control information set is: Information about resources for a synchronization signal block (SSB) of the first communication system; Information indicating whether the first communication system transmits SSB; Information about resources for a channel state information-reference signal (CSI-RS) of the first communication system, or Information indicating whether the CSI-RS of the first communication system is transmitted, A method characterized by comprising at least one of:

8. In paragraph 5, Further comprising a step of determining a communication system having a higher priority among the first communication system and the second communication system, If the first resource is used for the first signal and the first communication system has a high priority, at least a portion of the second resource overlapping with the first resource is not used for transmission or reception of the second signal, A method characterized in that when the first resource is used for the first signal and the second communication system has a high priority, at least a portion of the second resource overlapping with the first resource is used for transmission or reception of the second signal.

9. In the terminal of a wireless communication system, At least one transceiver; At least one processor communicatively connected to at least one transceiver; and Communicably connected to at least one processor, and executable individually or in any combination of said at least one processor, so that said terminal Receive a set of control information including information about a first resource associated with a first communication system; Based on the above control information set, determining whether the first resource is used for a first signal associated with the first communication system; A terminal characterized by including a memory storing an instruction for transmitting or receiving a second signal related to a second communication system based on a second resource that overlaps at least partly with the first resource according to the above decision.

10. In paragraph 9, The above control information set is: Information about the bandwidth part (BWP) of the first communication system, Information about a control resource set (CORESET) related to a physical downlink control channel (PDCCH) of the first communication system, Information about the search space associated with the PDCCH of the first communication system, or Information indicating whether the PDCCH of the first communication system is transmitted; A terminal characterized by including at least one of:

11. In paragraph 9, The above control information set is: Information about resources for a synchronization signal block (SSB) of the first communication system; Information indicating whether the first communication system transmits SSB; Information about resources for a channel state information-reference signal (CSI-RS) of the first communication system, or Information indicating whether the CSI-RS of the first communication system is transmitted, A terminal characterized by including at least one of:

12. In paragraph 9, The above instruction causes the terminal to determine a communication system having a higher priority among the first communication system and the second communication system, If the first resource is used for the first signal and the first communication system has a high priority, at least a portion of the second resource overlapping with the first resource is not used for transmission or reception of the second signal, A terminal characterized in that, when the first resource is used for the first signal and the second communication system has a high priority, at least a portion of the second resource overlapping with the first resource is used for transmission or reception of the second signal.

13. In a base station of a wireless communication system, At least one transceiver; At least one processor connected to enable communication with at least one transceiver; and Communicably connected to at least one processor, and executable individually or in any combination of said at least one processor, so that said base station Determine whether a first resource associated with a first communication system is used for a first signal associated with the first communication system; Transmitting a control information set including information about the first resource, A base station characterized by including a memory storing an instruction for transmitting or receiving a second signal related to a second communication system based on a second resource that overlaps at least partly with the first resource according to the above decision.

14. In paragraph 13, The above control information set is: Information about the bandwidth part (BWP) of the first communication system, Information about a control resource set (CORESET) related to a physical downlink control channel (PDCCH) of the first communication system, Information about the search space associated with the PDCCH of the first communication system, or Information indicating whether the PDCCH of the first communication system is transmitted; A base station characterized by including at least one of:

15. In paragraph 13, The above control information set is: Information about resources for a synchronization signal block (SSB) of the first communication system; Information indicating whether the first communication system transmits SSB; Information about resources for a channel state information-reference signal (CSI-RS) of the first communication system, or Information indicating whether the CSI-RS of the first communication system is transmitted, A base station characterized by including at least one of:

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