Base station and control method

Abstract

This base station includes a distribution unit of a first generation, a distribution unit of a second generation, and a wireless unit, and performs multi-RAT spectrum sharing between a radio access technology (RAT) of the first generation and a RAT of the second generation. The wireless unit includes: a reception part that receives, from the distribution unit of the first generation and / or the distribution unit of the second generation, common or individual control information related to uplink transmission power control to be used commonly or individually in the RAT of the first generation and the RAT of the second generation; and a control unit that uses the common or individual control information to execute a process related to the uplink transmission power control in the RAT of the first generation and a process related to the uplink transmission power control in the RAT of the second generation.

Description

Base station and control method

[0001] The present invention relates to a base station and a control method in a communication system.

[0002] In NR (New Radio) (also known as "5G"), a wireless communication system based on the 3GPP (registered trademark) standard, and its successor systems (e.g., "6G"), technologies are being considered to meet requirements such as large capacity, high data transmission speed, low latency, simultaneous connection of numerous terminals, low cost, and low power consumption (e.g., Non-Patent Document 1).

[0003] Furthermore, network architectures for 5G Core Network (5GC) or 5G System (5GS), which are the core networks in 5G, and for 6G Core Network (6GC) or 6G System (6G System), which are the successors to 5G, are also being considered.

[0004] Furthermore, in O-RAN (Open-Radio Access Network), technologies such as the AI-Native RAN (Artificial Intelligence - Native Radio Access Network) architecture, Multi-RAT Spectrum Sharing (MRSS), enhanced Massive MIMO (Multiple Input Multiple Output) considering more than 1000 antenna elements, and distributed MIMO are being considered as technologies to realize 6G. These technologies are closely related to the Open Fronthaul Interface, which connects the distributed unit (O-DU (Distribution Unit)) that handles the physical upper layer (PHY-high) functions and the radio unit (O-RU (Radio Unit)) that handles the physical lower layer (PHY-low) functions. For example, the performance and implementation complexity of these technologies are affected by the low-layer partitioning options that determine the functions of PHY-high and PHY-low.

[0005] 3GPP TS 38.300 V18.3.0 (2024-09) 3GPP TS 38.213 V18.4.0 (2024-09)

[0006] One of the technologies being considered for 6G in O-RAN is Multi-RAT Spectrum Sharing (MRSS), which improves spectral efficiency by allowing different radio access technologies (RATs), such as 5G RATs and 6G RATs, to share the same frequency band. However, the operation of uplink transmission power control in MRSS in O-RAN is not yet clear.

[0007] This invention has been made in view of the above points, and aims to clarify the operation of uplink transmission power control in multi-RAT spectrum sharing.

[0008] According to the disclosed technology, a base station is provided that performs multi-RAT spectrum sharing using a first-generation RAT (Radio Access Technology) and a second-generation RAT, the base station comprising a first-generation distributed unit, a second-generation distributed unit, and a radio unit, wherein the radio unit includes a receiving unit that receives common or individual control information relating to uplink transmission power control used in common or individually by the first-generation RAT and the second-generation RAT from at least one of the first-generation distributed unit and the second-generation distributed unit, and a control unit that uses the common or individual control information to perform processing relating to uplink transmission power control in the first-generation RAT and processing relating to uplink transmission power control in the second-generation RAT.

[0009] The disclosed technology clarifies the operation of uplink power control in multi-RAT spectrum sharing.

[0010] This figure shows an example configuration of a wireless communication system in an embodiment of the present invention (1). This figure shows an example configuration of a wireless communication system in an embodiment of the present invention (2). This figure shows an example of a logical architecture in O-RAN. This figure shows an example configuration of a base station 10 in an embodiment of the present invention. This figure illustrates uplink transmission power control in an embodiment of the present invention. This figure shows an example of the functional configuration of a base station 10 and a network node 30 in an embodiment of the present invention. This figure shows an example of the functional configuration of a terminal 20 in an embodiment of the present invention. This figure shows an example of the hardware configuration of a base station 10 and a terminal 20 in an embodiment of the present invention. This figure shows an example of the configuration of a vehicle 2001 in an embodiment of the present invention.

[0011] Embodiments of the present invention will be described below with reference to the drawings. Note that the embodiments described below are examples, and the embodiments to which the present invention is applied are not limited to those described below.

[0012] In the operation of the wireless communication system according to the embodiment of the present invention, existing technologies may be used as appropriate. However, such existing technologies may be, for example, existing LTE or existing NR, but are not limited to existing LTE or NR.

[0013] Furthermore, in the embodiments of the present invention described below, terms such as SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), and PUSCH (Physical Uplink Shared Channel), which are used in existing LTE systems, will be used. This is for convenience of description, and similar signals, functions, etc., may be called by other names. Also, the above terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even if a signal is used in NR, it is not necessarily explicitly stated as "NR-".

[0014] Furthermore, in the embodiments of the present invention, the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or any other system (for example, a Flexible Duplex).

[0015] Furthermore, in embodiments of the present invention, "configuring" wireless parameters means that predetermined values ​​are pre-configured, or that wireless parameters notified from the base station 10 or terminal 20 are configured. Also, in the following description, " / " means "and / or" unless otherwise specified, or unless it is clear from the context that it has a different meaning.

[0016] Figure 1 shows an example configuration (1) of a wireless communication system according to an embodiment of the present invention. The wireless communication system according to an embodiment of the present invention includes a base station 10 and a terminal 20, as shown in Figure 1. Figure 1 shows one base station 10 and one terminal 20, but this is an example, and there may be multiple base stations 10 and terminals 20.

[0017] Base station 10 is a communication device that provides one or more cells and communicates wirelessly with terminal 20. The physical resources of the wireless signal are defined in the time domain and the frequency domain. The time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain may be defined by the number of subcarriers or resource blocks. Base station 10 transmits synchronization signals and system information to terminal 20. Synchronization signals are, for example, NR-PSS and NR-SSS. System information is transmitted, for example, in NR-PBCH and is also called broadcast information. Synchronization signals and system information may also be called SSB (SS / PBCH block). As shown in Figure 1, base station 10 transmits control signals or data to terminal 20 via DL (Downlink) and receives control signals or data from terminal 20 via UL (Uplink). Both base station 10 and terminal 20 are capable of transmitting and receiving signals using beamforming. Furthermore, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Also, both the base station 10 and the terminal 20 may communicate via Carrier Aggregation (CA) through secondary cells (SCell) and primary cells (PCell). Additionally, the terminal 20 may communicate via Dual Connectivity (DC) through the primary cell of base station 10 and the primary secondary cell group cell (PSCell) of another base station 10.

[0018] Terminal 20 is a communication device equipped with wireless communication capabilities, such as a smartphone, mobile phone, tablet, wearable device, or M2M (Machine-to-Machine) communication module. As shown in Figure 1, Terminal 20 receives control signals or data from the base station 10 via DL and transmits control signals or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. Terminal 20 also receives various reference signals transmitted from the base station 10 and performs propagation path quality measurement based on the reception results of said reference signals.

[0019] Furthermore, various requirements are being considered for the next generation of 6G. For example, these requirements may include ultra-broadband communication, mission-critical communication, ultra-massive connection, universal coverage, intelligent connection, and ubiquitous sensing.

[0020] Furthermore, these requirements may include ultra-high-speed communication, large-capacity communication, ultra-wide coverage, ultra-low power consumption, cost reduction, ultra-low latency, ultra-high reliability communication, ultra-high connectivity, and sensing.

[0021] To meet these requirements, the new concept aims for extensibility (e.g., making it more effective for future use), ease of operation, customizability (e.g., making it easier to operate), and sustainability (e.g., cost reduction, a more robust configuration, and resilience). Furthermore, guaranteed communication, ensuring a minimum level of performance at all times, is being considered.

[0022] Figure 2 shows an example configuration (2) of a wireless communication system according to an embodiment of the present invention. Figure 2 shows an example configuration of a wireless communication system when DC (Dual connectivity) is performed. As shown in Figure 2, a base station 10A that will be an MN (Master Node) and a base station 10B that will be an SN (Secondary Node) are provided. Base stations 10A and 10B are each connected to the core network. Terminal 20 can communicate with both base station 10A and base station 10B.

[0023] A cell group provided by base station 10A, which is an MN (Mobile Network), is called an MCG (Master Cell Group), and a cell group provided by base station 10B, which is an SN (Mobile Network), is called an SCG (Secondary Cell Group). In a data center, an MCG consists of one PCell and one or more SCells, and an SCG consists of one PSCell (Primary SCG Cell) and one or more SCells.

[0024] Figure 3 shows an example of the logical architecture in O-RAN. As shown in Figure 3, at base station 10, distributed units (O-DUs) and radio units (O-RUs) are connected via an open fronthaul interface. This interface also transmits and receives control signals, user data, and synchronization signals in the open fronthaul control / user / synchronization plane (Open FH CUS-Plane), and management signals in the open fronthaul management plane (Open FH M-Plane). Furthermore, Service Management and Orchestration (SMO) communicates with the O-RUs via the Open FH M-Plane, with the O-DUs via the O1 interface, and with the O-Cloud via the O2 interface. Furthermore, in SMO, the non-real-time control unit (Non-RT (Real Time) RIC (RAN Intelligent Controller)) communicates with the near-real-time control unit (Near-RT (Real Time) RIC) via the A1 interface. The O-CU control plane (O-CU-CP) and the O-CU user plane (O-CU-UP) communicate with the O-DU via the F1-c and F1-u interfaces, respectively. The Near-RT RIC communicates with the O-DU and O-CU-CP, etc., via the E2 interface.

[0025] O-DU, O-CU, O-RU, SMO, and RIC may be deployed on the same base station, on different base stations, or in different locations other than base stations (nearby, remote, etc.). They may be treated as base station equipment or as network nodes. Furthermore, O-DU and O-CU may be deployed on a virtualization infrastructure and may be denoted as vDU (virtual DU) and vCU (virtual CU), for example.

[0026] Figure 4 shows an example of the configuration of a base station 10 in an embodiment of the present invention. Figure 4(a) shows a configuration in which one O-RU (5G+6G O-RU) that supports both 5G and 6G is connected to a 5G O-DU that supports 5G and a 6G O-DU that supports 6G, and communicates by dynamically switching between 5G and 6G or by using 5G and 6G simultaneously. In this configuration, the case in which the 5G O-DU and 6G O-DU are from the same vendor or a multi-vendor configuration may also be considered. Furthermore, since one O-RU (5G+6G O-RU) that supports both 5G and 6G is shared and used by the 5G and 6G O-DUs, it may be called a Shared O-RU.

[0027] Furthermore, Figure 4(b) shows a configuration in which one O-RU (5G+6G O-RU) that supports both 5G and 6G is connected to one O-DU (5G+6G O-DU) that supports both 5G and 6G, and communicates by dynamically switching between 5G and 6G or using 5G and 6G simultaneously. In this configuration, for example, a case may be considered in which a 5G-compatible O-DU and a 6G-compatible O-DU are in the same housing, and a 6G-compatible O-DU from a different vendor is installed in the 5G-compatible O-DU.

[0028] Figure 5 is a diagram illustrating the uplink transmission power control in an embodiment of the present invention. As shown in Figure 5, based on existing specifications (see Section 7.2.1 of Non-Patent Document 2), the uplink transmission power (P) at terminal 20 is controlled. PUCCH [dBm]) is P 0_PUCCH , 10log 10 (2μ·M) PUCCH ), PL, Δ F_PUCCH It is calculated by the sum of (F) and g(i).

[0029] Here, P 0_PUCCH This is the target receive level for uplink transmit power, which is set based on cell-specific table values.

[0030] 10log 10 (2μ·M) PUCCH) is a value for correcting the bandwidth and varies each time scheduling is performed. Also, μ is a value determined by the subcarrier spacing, where μ = 0 corresponds to 15 kHz, μ = 1 corresponds to 30 kHz, μ = 2 corresponds to 60 kHz, and μ = 4 corresponds to 120 kHz.

[0031] PL is the path loss value in the downlink (DL) calculated by the terminal 20.

[0032] Δ F_PUCCH (F) is the power offset value that depends on the format of the physical uplink control channel (PUCCH).

[0033] g(i) is the cumulative value of the transmit power control (TPC) command used for error correction.

[0034] Also, P PUCCH is set not to exceed the maximum power (P cMAX ) of the terminal 20.

[0035] Hereinafter, the operation of uplink transmission power control in multi-RAT spectrum sharing will be described. In the following methods, requests / instructions / notifications / reports, etc. transmitted and received by the O-DU, O-RU, etc. may be messages including the requests / instructions / notifications / reports. Also, a plurality of the following methods may be used in combination. Also, the generations of the network are described for 5G and 6G, but are not limited to the combination of 5G and 6G and may be replaced with 4G or 7G and later such as 7G. Also, when expressed as "the first generation and the second generation (of RAT)", for example, "the first generation" may be 5G and "the second generation" may be 6G, or may be a combination of other generations. Also, the O-DU and O-RU corresponding to 5G (5G RAT) and 6G (6G RAT) may be described as 5G O-DU, 5G O-RU, 6G O-DU, and 6G O-RU. Also, the O-DU and O-RU corresponding to both 5G and 6G may be described as 5G+6G O-DU and 5G+6G O-RU. The interface may be denoted as IF.

[0036] (Method 1) Common control of uplink transmission power between RATs (Setting a common target received power) Each RAT's O-DU (5G O-DU, 6G O-DU, etc.) may coordinate in advance to set a common target received power (e.g., -70 dBm) at the base station 10. Alternatively, each RAT's O-DU may be configured to adjust the transmission power to the same target received power for each RAT, either for the same terminal 20, or for example, for terminal 20A communicating via 5G and terminal 20B communicating via 6G.

[0037] (Commonization of Uplink Transmit Power Control Algorithms) The O-DUs of each RAT may coordinate in advance to set the uplink transmit power control algorithm used by each RAT (for example, setting some or all of the transmit power control parameters such as the uplink target received power (P0), the cumulative value of the transmit power control command (g(i)), and the fractional power control coefficient (α value) to be common). The algorithm set here may be a common algorithm or an compatible algorithm for each RAT.

[0038] (Commonization of Uplink Power Control Parameters) The O-DU of each RAT may coordinate in advance to set parameters / procedures for uplink power control that are commonly used by each RAT. Such parameters may be, for example, the coefficient (α value) of Fractional Power Control (FPC), the step size in Transmit Power Control (TPC), the parameters in closed-loop control, and the control period. For example, the O-DU of each RAT may decide to use FPC and set the same α value among the RATs. The procedure may be, for example, the transmit power ramping procedure at terminal 20. The O-DU of each RAT (5G O-DU, 6G O-DU, etc.) may commonize / adjust the procedure to minimize interference.

[0039] (Information sharing with O-RU) The O-DU of each RAT may transmit common control information regarding the common target reception power, and / or the algorithm for uplink transmission power control, and / or the parameters / procedures regarding uplink transmission power control, which have been pre-coordinated at the base station 10, to the O-RU.

[0040] Further, the O-DU of each RAT may transmit the common control information to the terminal 20 via the O-RU. Alternatively, the O-RU may transmit the common control information received from the O-DU of each RAT to the terminal 20.

[0041] (Cooperation using IF etc. between O-DUs) For example, in the harmonization of uplink transmission power control between RATs, the 5G O-DU may transmit (or the 6G O-DU may transmit to the 5G O-DU) common control information regarding the common target reception power, and / or the algorithm for uplink transmission power control, and / or the parameters / procedures regarding uplink transmission power control at the base station 10 via the interface between O-DUs (e.g., D2 IF etc.) or SMO / Non-RT RIC / Near-RT RIC. Here, the common control information may include a list containing a plurality of candidates for the common target reception power, and / or the algorithm for uplink transmission power control, and / or the parameters / procedures regarding uplink transmission power control at the base station 10. Also, the candidates may be included in the list in descending order of the priority of use.

[0042] Based on the common control information received from the 5G O-DU (or the 5G O-DU receives from the 6G O-DU), the 6G O-DU may determine the common target reception power, and / or the algorithm for uplink transmission power control, and / or the parameters / procedures regarding uplink transmission power control at the base station 10, and transmit the determined information to the 5G O-DU (or the 6G O-DU).

[0043] Alternatively, the O-DU of each RAT may transmit common control information to the SMO / Non-RT RIC / Near-RT RIC regarding a common target received power at base station 10, and / or an algorithm for uplink transmit power control, and / or parameters / procedures related to uplink transmit power control. The SMO / Non-RT RIC / Near-RT RIC may then determine the common target received power at base station 10, and / or an algorithm for uplink transmit power control, and / or parameters / procedures related to uplink transmit power control, based on the received common control information, and transmit the determined information to the O-DU of each RAT.

[0044] (Method 2) Execution of different uplink power control between RATs (Support for uplink power control of multiple RATs in the O-RU) The O-DU (5G O-DU, 6G O-DU, etc.) of each RAT and the O-RU may be assumed to be capable of setting control information for each of the multiple RATs regarding uplink power control, and simultaneously executing processing of different algorithms in the multiple RATs. In addition, the O-DU of each RAT may transmit the control information for each RAT to the terminal 20 corresponding to that RAT via the O-RU. Alternatively, the O-RU may transmit the control information received from the O-DU of each RAT to the terminal 20 corresponding to that RAT.

[0045] (Example 1) The O-RU may use two protocol stacks internally for transmit power control, one for 5G and one for 6G, to simultaneously operate transmit power control algorithms corresponding to the respective RATs for 5G and 6G.

[0046] (Example 2) The O-RU may perform protocol processing related to 5G and 6G transmit power control in separate processes or threads, and process them simultaneously in parallel.

[0047] The O-RU may identify the RAT corresponding to the received signal received from terminal 20 and perform uplink transmission power control processing according to each RAT. For example, the O-RU may identify the RAT using the header information / physical layer signaling information of the received signal. Alternatively, for example, the O-RU may route the received signal to the corresponding transmission power control protocol stack based on the RAT identification result and process it using the corresponding algorithm.

[0048] (Management of uplink transmission power control information by RAT) (Separation of control information (parameters)) The O-RU may manage control information (parameters) related to uplink transmission power control received from the O-DUs of multiple RATs (5G RAT, 6G RAT, etc.), and use said control information (parameters) to perform processing on the uplink transmission power signal for the signal received from the terminal 20.

[0049] (Example 1) The O-RU may separately store control information (parameters) for 5G and 6G transmission power control within its own device and apply the appropriate control information (parameters) according to the RAT identification result.

[0050] (Example 2) The O-RU may receive update information (parameters) regarding the transmission power control from the O-DU of each RAT and update the control information (parameters) of the corresponding RAT within the O-RU in real time.

[0051] (RAT-specific management of timing and control information) The O-DU and O-RU of each RAT may individually manage the timing of control information (parameters) related to the uplink transmission power of each RAT (control information processing timing / transmission timing to terminal 20, etc.) and the processing procedure of the control information (parameters).

[0052] (Example 1) The O-RU may individually manage the timing of processing / transmission (to the terminal 20) of control information (parameters) related to uplink power control, based on the frame structure (frame length, slot length, etc.) and timing requirements (time from receiving uplink data to transmitting control information to the terminal 20, etc.) in the 5G RAT and 6G RAT.

[0053] (Example 2) The O-RU may identify and analyze the format of the control information regarding uplink transmission power in each RAT (e.g., bit length of TPC command, structure of control message), and perform processing related to uplink transmission power control based on the control information (parameters) included in the format of each RAT.

[0054] (Method 3) Dynamic switching between Method 1 and Method 2 (Dynamic switching of uplink power control method according to network conditions) The O-DU (5G O-DU, 6G O-DU, etc.) and O-RU of each RAT may be assumed to dynamically switch between uplink power control by Method 1 and Method 2 according to the network conditions (traffic volume, interference level, number of users, etc.). Here, the uplink power control by Method 1 and Method 2 may be called the first mode and the second mode, respectively, and the switching of said method may be called mode switching.

[0055] For example, the O-DU of a first-generation RAT (e.g., a 5G O-DU) may decide to switch modes based on network conditions and send notifications regarding the mode switch to other generations of O-DUs (e.g., a 6G O-DU) and O-RUs. Alternatively, an SMO / Non-RT RIC / Near-RT RIC may decide to switch based on network conditions and send notifications regarding the switch to the O-DU and O-RUs of each RAT.

[0056] Furthermore, mode switching may be determined based on the results of real-time evaluation of performance indicators such as communication quality, interference level, and resource utilization efficiency, and / or on conditions such as exceeding a threshold for traffic volume or exceeding an acceptable range for interference levels.

[0057] Alternatively, mode switching may be determined using an artificial intelligence / machine learning model. Here, the artificial intelligence / machine learning model may be one that has been trained, for example, by backpropagation of a neural network, to predict future conditions and determine the optimal mode using operational data related to past network conditions.

[0058] (Dynamic update of control information (parameters)) The O-DU (5G O-DU, 6G O-DU, etc.) and O-RU of each RAT may update the control information (parameters) related to uplink transmission power control when the uplink transmission power control mode is switched. The O-DU (via the O-RU), or the O-RU, may send the mode switch notification / updated control information to the terminal 20.

[0059] For example, when switching from the second mode to the first mode, the O-DUs of each RAT may cooperate to determine the control information and transmit the determined control information to the O-RU, as described in Method 1. Alternatively, when switching from the first mode to the second mode, the O-RU may determine the control information and transmit the determined control information to the O-DU of each RAT.

[0060] In other words, the above method makes it possible to clarify the operation of uplink transmission power control in multi-RAT spectrum sharing.

[0061] (Device Configuration) Next, an example of the functional configuration of the base station 10, network node 30, and terminal 20 that perform the processing and operations described above will be explained. The base station 10, network node 30, and terminal 20 include the functions to perform the embodiments described above. However, the base station 10, network node 30, and terminal 20 may each be equipped with only some of the functions in the embodiments.

[0062] <Base Station 10 and Network Node 30> Figure 6 shows an example of the functional configuration of a base station 10 and a network node 30. As shown in Figure 6, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Figure 6 is merely an example. The functional classifications and names of the functional units can be anything as long as they can perform the operations according to the embodiment of the present invention. The network node 30 may have the same functional configuration as the base station 10. Furthermore, a network node 30 having multiple different functions on the system architecture may be composed of multiple network nodes 30 separated by function.

[0063] The transmitting unit 110 includes the function of generating a signal to be transmitted to the terminal 20 or other network node 30 and transmitting the signal by wire or wireless. The receiving unit 120 includes the function of receiving various signals transmitted from the terminal 20 or other network node 30 and obtaining information from the received signal, for example, information from a higher layer. A communication unit including the transmitting unit 110 and the receiving unit 120 may be configured.

[0064] The setting unit 130 stores pre-configured setting information and various setting information to be transmitted to the terminal 20 in a storage device, and reads them from the storage device as needed.

[0065] The control unit 140 performs the processing described in the embodiment. The signal transmission function in the control unit 140 may be included in the transmission unit 110, and the signal reception function in the control unit 140 may be included in the reception unit 120.

[0066] Furthermore, the base station 10 may include a distributed unit (O-DU), a radio unit (O-RU), and a central unit (O-CU). Also, the SMO, the non-real-time control device (Non-RT RIC) in the SMO, and the near-real-time control device (Near-RT RIC) may be functions of the network node 30. In addition, the O-DU, O-RU, O-CU, SMO, Non-RT RIC, and Near-RT RIC may each have a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140, and the transmitting unit 110 and the receiving unit 120 may communicate with each other.

[0067] <Terminal 20> Figure 7 is a diagram showing an example of the functional configuration of terminal 20. As shown in Figure 7, terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Figure 7 is merely an example. Any functional classification and name of functional unit is acceptable as long as it can perform the operations according to the embodiment of the present invention. Furthermore, a communication device that acts as a resource holder may have a functional configuration similar to that of terminal 20.

[0068] The transmitting unit 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly. The receiving unit 220 wirelessly receives various signals and obtains signals from higher layers from the received physical layer signals. The receiving unit 220 also has the function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals or reference signals transmitted from the network node 30. A communication unit including the transmitting unit 210 and the receiving unit 220 may be configured.

[0069] The setting unit 230 stores various setting information received from the network node 30 by the receiving unit 220 in its storage device and reads it from the storage device as needed. The setting unit 230 also stores pre-configured setting information.

[0070] The control unit 240 performs the processing described in the embodiment. The signal transmission function in the control unit 240 may be included in the transmission unit 210, and the signal reception function in the control unit 240 may be included in the reception unit 220.

[0071] (Hardware Configuration) The block diagrams (Figures 6 and 7) used in the description of the above embodiments show functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may be realized by combining the one device or the multiple devices with software.

[0072] Functions include, but are not limited to, judgment, decision, determination, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, assumption, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission is called a transmitting unit or transmitter. In all cases, as mentioned above, the method of implementation is not particularly limited.

[0073] For example, the network node 30, terminal 20, etc. in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. Figure 8 is a diagram showing an example of the hardware configuration of a base station 10 and terminal 20 according to one embodiment of the present disclosure. The network node 30 may have the same hardware configuration as the base station 10. The base station 10 and terminal 20 described above may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0074] In the following explanation, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware configuration of the base station 10 and terminal 20 may include one or more of the devices shown in the figure, or it may be configured without some of the devices.

[0075] Each function in the base station 10 and terminal 20 is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and storage device 1002, which allows the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of data reading and writing in the storage device 1002 and auxiliary storage device 1003.

[0076] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may consist of a central processing unit (CPU) that includes interfaces with peripheral devices, control devices, arithmetic units, registers, etc. For example, the control unit 140, control unit 240, etc., described above may be implemented by the processor 1001.

[0077] Furthermore, the processor 1001 reads programs (program code), software modules, or data from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. For example, the control unit 140 of the base station 10 shown in Figure 6 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001. Also, for example, the control unit 240 of the terminal 20 shown in Figure 7 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001. Although the above-described processes have been explained as being executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The program may also be transmitted from the network via a telecommunications line.

[0078] The storage device 1002 is a computer-readable recording medium and may consist of at least one of the following: ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. The storage device 1002 may also be called a register, cache, main memory, etc. The storage device 1002 can store executable programs (program code), software modules, etc., for implementing a communication method according to one embodiment of the present disclosure.

[0079] The auxiliary storage device 1003 is a computer-readable recording medium and may consist of at least one of the following: an optical disc such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital multipurpose disk, a Blu-ray® disk), a smart card, flash memory (e.g., a card, a stick, a key drive), a floppy® disk, a magnetic strip, etc. The above-mentioned storage medium may also be a database, server, or other suitable medium that includes at least one of the storage device 1002 and the auxiliary storage device 1003.

[0080] The communication device 1004 is hardware (transmitting / receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc. The communication device 1004 may be configured to include, for example, a high-frequency switch, duplexer, filter, frequency synthesizer, etc., in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the transmitting and receiving antenna, amplifier section, transmitting and receiving section, transmission path interface, etc., may be implemented by the communication device 1004. The transmitting and receiving section may be implemented in a physically or logically separated manner, with a transmitting section and a receiving section.

[0081] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, LED lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0082] Furthermore, each device, such as the processor 1001 and the storage device 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for each device.

[0083] Furthermore, the base station 10 and terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array), and some or all of each functional block may be realized by such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0084] Figure 9 shows an example of the configuration of vehicle 2001. As shown in Figure 9, vehicle 2001 includes an operating unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in this disclosure may be applied to a communication device mounted on vehicle 2001, for example, to the communication module 2013.

[0085] The operating unit 2002 consists of, for example, an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel, which is operated by the user.

[0086] The electronic control unit 2010 consists of a microprocessor 2031, memory (ROM, RAM) 2032, and communication ports (IO ports) 2033. Signals from various sensors 2021 to 2029 installed in the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0087] Signals from various sensors 2021 to 2029 include current signals from current sensor 2021 for sensing motor current, front and rear wheel rotation speed signals acquired by rotation speed sensor 2022, front and rear wheel air pressure signals acquired by air pressure sensor 2023, vehicle speed signals acquired by vehicle speed sensor 2024, acceleration signals acquired by acceleration sensor 2025, accelerator pedal depression signals acquired by accelerator pedal sensor 2029, brake pedal depression signals acquired by brake pedal sensor 2026, shift lever operation signals acquired by shift lever sensor 2027, and detection signals acquired by object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0088] The Information Service Unit 2012 consists of various devices for providing (outputting) various types of information such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, television, and radio, and one or more ECUs that control these devices. The Information Service Unit 2012 uses information acquired from external devices via a communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001. The Information Service Unit 2012 may include input devices that accept input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) and output devices that perform output to the outside (e.g., display, speaker, LED lamp, touch panel, etc.).

[0089] The driver assistance system unit 2030 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System)), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. The driver assistance system unit 2030 also transmits and receives various information via the communication module 2013 to realize driver assistance functions or autonomous driving functions.

[0090] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via its communication port. For example, the communication module 2013 sends and receives data via the communication port 2033 between the moving parts 2002, steering parts 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, the microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021-29 provided in the vehicle 2001.

[0091] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with external devices. For example, it can send and receive various types of information with external devices via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station or a mobile station.

[0092] The communication module 2013 may transmit at least one of the following to an external device via wireless communication: signals from the various sensors 2021-2028 input to the electronic control unit 2010, information obtained based on said signals, and information based on input from an external source (user) obtained via the information service unit 2012. The electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc., may also be called input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include the information based on the above input.

[0093] The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device and displays it on the information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may also be called an output unit, which outputs information (for example, outputs information to devices such as displays and speakers based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 2013). The communication module 2013 also stores the various information received from the external device in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the operating unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021-2029, etc., provided in the vehicle 2001.

[0094] <Notes> (Note 1) A base station that performs multi-RAT spectrum sharing using the first generation RAT (Radio Access Technology) and the second generation RAT, comprising a first generation distributed unit, a second generation distributed unit, and a wireless unit, wherein the wireless unit comprises: a receiving unit that receives common or individual control information relating to uplink transmission power control used in common or individually for the first generation RAT and the second generation RAT from at least one of the first generation distributed unit and the second generation distributed unit; and a control unit that uses the common or individual control information to perform processing relating to uplink transmission power control in the first generation RAT and processing relating to uplink transmission power control in the second generation RAT. (Note 2) The base station according to Note 1, wherein the control unit determines the common or individual control information including information relating to target received power and a transmission power control algorithm. (Appendix 3) A base station that performs multi-RAT spectrum sharing using the first generation RAT (Radio Access Technology) and the second generation RAT, comprising a first generation distributed unit, a second generation distributed unit, and a wireless unit, wherein the wireless unit includes: a receiving unit that receives first control information relating to uplink transmission power control in the first generation RAT from the first generation distributed unit and second control information relating to uplink transmission power control in the second generation RAT from the second generation distributed unit; a control unit that performs processing relating to uplink transmission power control of the first generation using the first control information and a protocol stack corresponding to the first generation RAT, and processing relating to uplink transmission power control of the second generation using the second control information and a protocol stack corresponding to the second generation RAT.(Appendix 4) The base station according to Appendix 3, wherein the receiving unit receives the first control information, which includes information on the frame structure and timing requirements in the first generation RAT, from the first generation distributed unit, and receives the second control information, which includes information on the frame structure and timing requirements in the second generation RAT, from the second generation distributed unit. (Appendix 5) A base station that performs multi-RAT spectrum sharing using the first generation RAT (Radio Access Technology) and the second generation RAT, comprising a first generation distributed unit, a second generation distributed unit, and a wireless unit, wherein the wireless unit includes a receiving unit that receives common control information relating to uplink transmission power control used in common by the first generation RAT and the second generation RAT from the first generation distributed unit or the second generation distributed unit, a first control information relating to uplink transmission power control in the first generation RAT from the first generation distributed unit, and a second control information relating to uplink transmission power control in the second generation RAT from the second generation distributed unit, and a control unit that switches between a first mode that executes processing relating to uplink transmission power control using the common control information and a second mode that executes processing relating to uplink transmission power control using the first control information and the second control information. (Appendix 6) A control method to be performed by a base station that performs multi-RAT spectrum sharing using a first-generation RAT (Radio Access Technology) and a second-generation RAT, the base station comprising a first-generation distributed unit, a second-generation distributed unit, and a wireless unit, wherein the wireless unit comprises the steps of: receiving common or individual control information relating to uplink transmission power control, which is used in common or individually by the first-generation RAT and the second-generation RAT, from at least one of the first-generation distributed unit and the second-generation distributed unit; and performing processing relating to uplink transmission power control in the first-generation RAT and processing relating to uplink transmission power control in the second-generation RAT using the common or individual control information.

[0095] Any of the above supplementary notes can clarify the operation of uplink transmission power control in multi-RAT spectrum sharing.

[0096] (Supplement to Embodiments) Embodiments of the present invention have been described above, but the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, substitutions, etc. Specific numerical examples have been used to facilitate understanding of the invention, but unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention, and matters described in two or more items may be combined as needed, and matters described in one item may be applied to matters described in another item (as long as they do not contradict each other). The boundaries of functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical parts. The operation of multiple functional units may be physically performed by one part, or the operation of one functional unit may be physically performed by multiple parts. The processing procedures described in the embodiments may be rearranged as long as they do not contradict each other. For the convenience of explaining the processing, the base station 10 and terminal 20 have been described using functional block diagrams, but such devices may be realized in hardware, software, or a combination thereof. The software operated by the processor of the base station 10 according to an embodiment of the present invention and the software operated by the processor of the terminal 20 according to an embodiment of the present invention may be stored in any suitable storage medium such as random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or other appropriate storage medium.

[0097] Furthermore, notification of information is not limited to the embodiments described herein and may be carried out by other means. For example, notification of information may be carried out by physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling), broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or combinations thereof. Also, RRC signaling may be called RRC messages, and may be, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc.

[0098] Each aspect / embodiment described in this disclosure refers to LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (where x is, for example, an integer or decimal)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20 may apply to at least one system utilizing UWB (Ultra-WideBand), Bluetooth®, or other appropriate systems, and to next-generation systems extended, modified, created, or defined based thereon. Alternatively, multiple systems may be applied in combination (e.g., a combination of at least one of LTE and LTE-A with 5G).

[0099] The processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described herein may be reordered, provided they are consistent with each other. For example, the methods described herein present various step elements in an exemplary order and are not limited to that specific order.

[0100] In this specification, specific operations performed by the base station 10 may, in some cases, be performed by its upper node. In a network consisting of one or more network nodes having a base station 10, it is clear that various operations performed for communication with the terminal 20 can be performed by the base station 10 and at least one of the other network nodes (for example, an MME or S-GW, but not limited to these). Although the above example illustrates the case where there is one other network node besides the base station 10, the other network node may be a combination of multiple other network nodes (for example, an MME and an S-GW).

[0101] The information or signals described in this disclosure may be output from a higher layer (or lower layer) to a lower layer (or higher layer). They may also be input and output via multiple network nodes.

[0102] Input and output information may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information may be overwritten, updated, or appended to. Output information may be deleted. Input information may be transmitted to other devices.

[0103] The determination in this disclosure may be made by a value represented by one bit (0 or 1), by a Boolean value (true or false), or by a numerical comparison (for example, a comparison with a predetermined value).

[0104] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0105] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or digital subscriber line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0106] The information, signals, etc. described in this disclosure may be represented using any of the various different techniques. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0107] In addition, terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of the channel and symbol may be a signal (signaling). Also, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, cell, frequency carrier, etc.

[0108] The terms “system” and “network” as used in this disclosure are interchangeable.

[0109] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a given value, or other corresponding information. For example, wireless resources may be indicated by an index.

[0110] The names used for the parameters described above are not restrictive in any way. Furthermore, the formulas and other expressions using these parameters may differ from those expressly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

[0111] In this disclosure, terms such as "Base Station (BS)", "wireless base station", "base station equipment", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission / reception point", "cell", "sector", "cell group", "carrier", and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0112] A base station can accommodate one or more (e.g., three) cells. If a base station accommodates multiple cells, the entire coverage area of ​​the base station can be divided into multiple smaller areas, each of which may also be provided with communication services by a base station subsystem (e.g., a Remote Radio Head (RRH)). The terms “cell” or “sector” refer to part or all of the coverage area of ​​at least one of the base station and / or base station subsystems that provide communication services in that coverage.

[0113] In this disclosure, the transmission of information by a base station to a terminal may be interpreted as the base station instructing the terminal to perform control or operation based on the information.

[0114] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0115] A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or several other appropriate terms.

[0116] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may also be a device mounted on a mobile body, the mobile body itself, etc. The mobile body refers to a movable object, and its speed of movement is arbitrary. This also includes the case when the mobile body is stationary. The mobile body includes, but is not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcarts, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and items mounted on them. The mobile body may also be a mobile body that moves autonomously based on operation commands. It may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Furthermore, at least one of the base station and the mobile station may include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0117] Furthermore, the term "base station" in this disclosure may be interpreted as "user terminal." For example, the various aspects / embodiments of this disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, the terminals 20 may have the functions that the base station 10 has. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, uplink channel, downlink channel, etc., may be interpreted as side channel.

[0118] Similarly, the term "user terminal" in this disclosure may be replaced with "base station." In this case, the base station may be configured to have the same functions as the user terminal described above.

[0119] As used in this disclosure, the terms “determining” and “determining” may encompass a wide variety of actions. “Determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, or inquiring (e.g., searching in a table, database, or other data structure), or ascertaining. “Determining” may also include receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, or accessing (e.g., accessing data in memory). Furthermore, "judgment" and "decision" can include considering something as having been "judged" or "decided" after resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment" and "decision" can include considering something as having been "judged" or "decided" after some action. Also, "judgment (decision)" can be reinterpreted as "assuming," "expecting," or "considering."

[0120] The terms “connected,” “coupled,” or any variation thereof, mean any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be reinterpreted as “access.” As used in this disclosure, two elements may be considered to be “connected” or “coupled” with each other using at least one of one or more wires, cables, and printed electrical connections, and, in some non-limiting and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible) domain.

[0121] The reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot depending on the applicable standard.

[0122] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0123] Any reference to elements using the designations “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, references to the first and second elements do not imply that only two elements may be employed, or that the first element must precede the second element in any way.

[0124] In the configuration of each of the above devices, "means" may be replaced with "part," "circuit," "device," etc.

[0125] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0126] In this disclosure, if articles are added through translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0127] In this disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "combine" may be interpreted similarly to "different."

[0128] Each aspect / embodiment described in this disclosure may be used individually, in combination, or switched between as needed during implementation. Furthermore, notification of specific information (e.g., notification that "X is") is not limited to explicit notification, but may also be implicit (e.g., by not providing such notification).

[0129] Although the present disclosure has been described in detail above, it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the intent and scope of the present disclosure as defined by the claims. Therefore, the descriptions in the present disclosure are illustrative and not intended to be restrictive in any way.

[0130] 10 Base station 110 Transmitter 120 Receiver 130 Setting unit 140 Control unit 20 Terminal 210 Transmitter 220 Receiver 230 Setting unit 240 Control unit 30 Network node 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

Claims

1. A base station that performs multi-RAT spectrum sharing using a first-generation RAT (Radio Access Technology) and a second-generation RAT, comprising a first-generation distributed unit, a second-generation distributed unit, and a wireless unit, wherein the wireless unit includes: a receiving unit that receives common or individual control information relating to uplink transmission power control used in common or individually by the first-generation RAT and the second-generation RAT from at least one of the first-generation distributed unit and the second-generation distributed unit; and a control unit that uses the common or individual control information to perform processing relating to uplink transmission power control in the first-generation RAT and processing relating to uplink transmission power control in the second-generation RAT.

2. The base station according to claim 1, wherein the control unit determines the common or individual control information, which includes information regarding the algorithm for controlling the target received power and the transmitted power.

3. A base station that performs multi-RAT spectrum sharing using the first generation RAT (Radio Access Technology) and the second generation RAT, comprising a first generation distributed unit, a second generation distributed unit, and a wireless unit, wherein the wireless unit includes: a receiving unit that receives first control information relating to uplink transmission power control in the first generation RAT from the first generation distributed unit and second control information relating to uplink transmission power control in the second generation RAT from the second generation distributed unit; a control unit that executes processing relating to uplink transmission power control in the first generation using the first control information and a protocol stack corresponding to the first generation RAT, and processing relating to uplink transmission power control in the second generation using the second control information and a protocol stack corresponding to the second generation RAT.

4. The base station according to claim 3, wherein the receiving unit receives first control information from the first generation distributed unit, which includes information regarding the frame structure and timing requirements in the first generation RAT, and receives second control information from the second generation distributed unit, which includes information regarding the frame structure and timing requirements in the second generation RAT.

5. A base station that performs multi-RAT spectrum sharing using a first-generation RAT (Radio Access Technology) and a second-generation RAT, comprising a first-generation distributed unit, a second-generation distributed unit, and a wireless unit, wherein the wireless unit includes: a receiving unit that receives common control information relating to uplink transmission power control used in common by the first-generation RAT and the second-generation RAT from the first-generation distributed unit or the second-generation distributed unit; a receiving unit that receives first control information relating to uplink transmission power control in the first-generation RAT from the first-generation distributed unit; and a control unit that switches between a first mode that executes processing relating to uplink transmission power control using the common control information and a second mode that executes processing relating to uplink transmission power control using the first control information and the second control information.

6. A control method to be performed by a base station that performs multi-RAT spectrum sharing using a first-generation RAT (Radio Access Technology) and a second-generation RAT, the base station comprising a first-generation distributed unit, a second-generation distributed unit, and a wireless unit, wherein the wireless unit comprises the steps of: receiving common or individual control information relating to uplink transmission power control, which is used in common or individually by the first-generation RAT and the second-generation RAT, from at least one of the first-generation distributed unit and the second-generation distributed unit; and performing processing relating to uplink transmission power control in the first-generation RAT and processing relating to uplink transmission power control in the second-generation RAT using the common or individual control information.

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