Method and apparatus for controlling transmission power of base station in wireless communication system

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting a data transmission rate higher than that of a 4G communication system such as LTE. A base station according to one embodiment of the present disclosure acquires configuration information related to Tx power adaptation, and performs Tx power adaptation on the basis of the configuration information related to Tx power adaptation. Here, the configuration information related to Tx power adaptation includes at least one from among information related to a Tx power pattern, information related to adaptation duration, and information related to a synchronization signal block (SSB) transmission period.

Description

Method and device for controlling the transmission power of a base station in a wireless communication system

[0001] The present disclosure relates to a wireless communication system, and specifically, to a method and apparatus for controlling the transmission power of a base station to reduce energy consumed in a network.

[0002] Looking back at the evolution of wireless communication through successive generations, technologies have been developed primarily for human-oriented services, such as voice, multimedia, and data. Following the commercialization of 5G (5th-generation) communication systems, connected devices, which have been increasing explosively, are expected to be connected to communication networks. Examples of networked objects include vehicles, robots, drones, home appliances, displays, smart sensors installed in various infrastructures, construction machinery, and factory equipment. Mobile devices are expected to evolve into various form factors, such as augmented reality glasses, virtual reality headsets, and holographic devices. In the 6G (6th-generation) era, efforts are underway to develop improved 6G communication systems to connect hundreds of billions of devices and objects to provide diverse services. For this reason, 6G communication systems are being referred to as "beyond 5G" systems.

[0003] In the 6G communication system predicted to be realized around 2030, the maximum transmission speed is tera (i.e., 1,000 gigabit) bps, and the wireless latency is 100 microseconds (μsec). In other words, compared to the 5G communication system, the transmission speed in the 6G communication system is 50 times faster, and the wireless latency is reduced to one-tenth.

[0004] To achieve such high data transmission speeds and ultra-low latency, 6G communication systems are being considered for implementation in the terahertz band (e.g., the 95 GHz to 3 terahertz (3 THz) band). In the terahertz band, due to more severe path loss and atmospheric absorption compared to the millimeter wave (mmWave) band introduced in 5G, the importance of technology capable of guaranteeing signal reach, or coverage, is expected to increase. As key technologies to ensure coverage, radio frequency (RF) devices, antennas, new waveforms that offer better coverage than orthogonal frequency division multiplexing (OFDM), beamforming, and multi-antenna transmission technologies such as massive multiple-input and multiple-output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, and large-scale antennas must be developed. In addition, new technologies such as metamaterial-based lenses and antennas, high-dimensional spatial multiplexing technology using orbital angular momentum (OAM), and reconfigurable intelligent surface (RIS) are being discussed to improve coverage of terahertz band signals.

[0005] In addition, to improve frequency efficiency and system network, development is underway in 6G communication systems for full duplex technology, in which uplink and downlink simultaneously utilize the same frequency resources at the same time; network technology that integrates satellites and HAPS (high-altitude platform stations); network structure innovation technology that supports mobile base stations and enables network operation optimization and automation; dynamic spectrum sharing technology through collision avoidance based on spectrum usage prediction; AI-based communication technology that utilizes AI (artificial intelligence) 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 of complexity exceeding the limits of terminal computing capabilities by utilizing ultra-high performance communication and computing resources (mobile edge computing (MEC), cloud, etc.). In addition, attempts are continuing to further strengthen connectivity between devices, further optimize networks, promote the softwareization of network entities, and increase the openness of wireless communication through the design of new protocols to be used in 6G communication systems, the implementation of hardware-based security environments, the development of mechanisms for the safe utilization of data, and the development of technologies regarding privacy maintenance methods.

[0006] Due to the research and development of such 6G communication systems, it is expected that a new dimension of hyper-connected experience will become possible through the hyper-connectivity of 6G communication systems, which encompasses not only connections between objects but also connections between people and objects. Specifically, it is projected that 6G communication systems will enable the provision of services such as truly immersive extended reality (truly immersive XR), high-fidelity mobile holograms, and digital replicas. Furthermore, services such as remote surgery, industrial automation, and emergency response, which are provided through 6G communication systems with enhanced security and reliability, will be applied in various fields including industry, healthcare, automotive, and home appliances.

[0007] A method of a base station in a wireless communication system according to one embodiment may include: a step of obtaining configuration information regarding Tx power adaptation; and a step of performing Tx power adaptation based on the configuration information regarding Tx power adaptation. The configuration information regarding Tx power adaptation may include at least one of information regarding a Tx power pattern, information regarding an adaptation duration, or information regarding a synchronization signal block (SSB) transmission period.

[0008] A method of a UE in a wireless communication system according to one embodiment may include the step of receiving a synchronization signal block (SSB) from a base station, the SSB including an indicator indicating whether to apply Tx power adaptation; and the step of performing an initial connection to a base station that applies Tx power adaptation based on the SSB.

[0009] In a wireless communication system according to one embodiment, a base station may include a memory for storing one or more instructions and at least one processor. The at least one processor may acquire configuration information regarding Tx power adaptation; and perform Tx power adaptation based on the configuration information regarding Tx power adaptation. The configuration information regarding Tx power adaptation may include at least one of information regarding a Tx power pattern, information regarding an adaptation duration, or information regarding an SSB (synchronization signal block) transmission period.

[0010] In a wireless communication system according to one embodiment, the UE may include a memory for storing one or more instructions and at least one processor. The at least one processor receives a synchronization signal block (SSB) from a base station, the SSB including an indicator indicating whether to apply Tx power adaptation; and based on the SSB, perform an initial connection to a base station that applies Tx power adaptation.

[0011] A computer-readable recording medium disclosed as a technical means for achieving the above-described technical task may store a program for executing at least one of the embodiments of the disclosed method on a computer.

[0012] Other technical features can be easily made clear to a person skilled in the art from the following drawings, descriptions, and claims.

[0013] According to one embodiment of the present disclosure, in a wireless communication system, a base station can reduce energy consumed by the RAN while ensuring the connection of new terminals through coverage by alternately using low Tx power and high Tx power.

[0014] However, the effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs from the description below.

[0015] FIG. 1 is a drawing for explaining the technical field and purpose of the present disclosure.

[0016] FIG. 2 is a diagram illustrating a method for a base station to acquire setting information regarding Tx power adaptation and perform Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure.

[0017] FIG. 3a is a diagram illustrating a method for a base station or OAM server to generate configuration information regarding Tx power adaptation using an AI / ML model in a wireless communication system according to one embodiment of the present disclosure.

[0018] FIG. 3b is a diagram illustrating a method for a base station or OAM server to generate configuration information regarding Tx power adaptation using an AI / ML model in a wireless communication system according to one embodiment of the present disclosure.

[0019] FIG. 4a is a drawing for illustrating examples of setting information regarding Tx power adaptation according to one embodiment of the present disclosure.

[0020] FIG. 4b is a drawing for illustrating examples of setting information regarding Tx power adaptation according to one embodiment of the present disclosure.

[0021] FIG. 4c is a drawing for illustrating examples of setting information regarding Tx power adaptation according to one embodiment of the present disclosure.

[0022] FIG. 4d is a drawing for illustrating examples of setting information regarding Tx power adaptation according to one embodiment of the present disclosure.

[0023] FIG. 5 is a diagram illustrating a method for a base station to perform Tx power adaptation based on setting information regarding Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure.

[0024] FIG. 6 is a diagram illustrating a method for a base station to stop Tx power adaptation and change to a default Tx power setting in a wireless communication system according to one embodiment of the present disclosure.

[0025] FIG. 7 is a diagram illustrating a method for a terminal to connect to a base station performing Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure.

[0026] FIG. 8 is a diagram illustrating a method for a terminal to connect to a base station performing Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure.

[0027] FIG. 9a is a diagram illustrating a method for a terminal connected to a base station performing Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure to measure a channel.

[0028] FIG. 9b is a diagram illustrating an example of a MeasObjectNR included in an RRC message received by a terminal connected to a base station performing Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure.

[0029] FIG. 10 is a diagram illustrating a method for a base station to perform Tx power adaptation by receiving configuration information regarding Tx power adaptation from an OAM server in a wireless communication system according to one embodiment of the present disclosure.

[0030] FIG. 11 is a diagram illustrating a method for a terminal to connect to a base station performing Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure.

[0031] FIG. 12 is a block diagram of a base station according to one embodiment of the present disclosure.

[0032] FIG. 13 is a block diagram of a UE according to one embodiment of the present disclosure.

[0033] FIG. 14 is a block diagram of an OAM server according to one embodiment of the present disclosure.

[0034] The present disclosure is subject to various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, FIGS. 1 through 12 discussed below and the various embodiments used in this specification to explain the principles of the present disclosure are merely illustrative and should not be construed as limiting the scope of the present disclosure in any way. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged system or device. Furthermore, those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably configured wireless communication system.

[0035] For the same reason, some components in the attached drawings have been exaggerated, omitted, or schematically depicted. Additionally, the dimensions of each component do not entirely reflect their actual dimensions. Identical or corresponding components in each drawing have been assigned the same reference numbers.

[0036] In addition, numbers used in the description process of the specification (e.g., 1st, 2nd, etc.) are merely identifiers to distinguish one component from another.

[0037] The advantages and features of the present disclosure, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the 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. Throughout the specification, the same reference numerals refer to the same components. Furthermore, in describing the present disclosure, if it is determined that a detailed description of a related function or configuration might unnecessarily obscure the essence of the present disclosure, such detailed description is omitted. Additionally, the terms described below are defined considering their functions in the present disclosure, and these may vary depending on the intentions or conventions of the user or operator. Therefore, their definitions should be based on the content throughout the specification.

[0038] Hereinafter, a base station (BS) is an entity that performs resource allocation for terminals and may be at least one of an NG-RAN, gNode B, eNode B, Node B, or xNode B (where x is an alphabet including g and e), a radio access unit, a base station controller, a satellite, an airborn, or a node on a network. A distributed base station may be separated into a centralized unit (CU) and a distributed unit (DU). The CU provides support for higher protocol layers such as SDAP (service data adaptation protocol), RRC (radio resource control), and PDCP (packet data convergence protocol), and the DU may provide support for lower protocol layers such as RLC (radio link control), MAC (medium access control), and PHY (physical layer). A single CU may exist for each gNodeB, and multiple DUs may be connected to each CU. The DU includes both baseband processing and RF functions and can support various mobility scenarios.

[0039] Hereinafter, the terminal (user equipment, UE) may include a Mobile Station (MS), a Vehicle, a Satellite, an Airborne, a Cellular Phone, a Smartphone, a Computer, or a Multimedia System capable of performing communication functions.

[0040] Additionally, while LTE, LTE-A, or 5G systems may be described below as examples, embodiments of the present disclosure may also be applied to other communication systems having similar technical backgrounds or channel types. For example, 5G-Advance or NR-Advance or 6th generation mobile communication technology (6G) developed after 5G mobile communication technology (or new radio, NR) may be included, and the 5G below may be a concept that includes existing LTE, LTE-A, and other similar services. Furthermore, the present disclosure may be applied to other communication systems with some modifications made at the discretion of a person with skilled technical knowledge, without significantly departing from the scope of the present disclosure.

[0041] At this point, it will be understood that each block of the process flow diagrams and combinations of the flow diagrams can be executed by computer program instructions. Since these computer program instructions can be loaded into the processor of a general-purpose computer, a special-purpose computer, or other programmable data processing equipment, the instructions executed through the processor of the computer or other programmable data processing equipment create means to perform the functions described in the flow diagram block(s). Since these computer program instructions can also be stored in computer-available or computer-readable memory that can be directed toward the computer or other programmable data processing equipment to implement the function in a specific way, the instructions stored in computer-available or computer-readable memory can also produce a manufactured item containing instruction means to perform the function described in the flow diagram block(s). Since computer program instructions can be loaded onto a computer or other programmable data processing equipment, instructions that perform a series of operation steps on the computer or other programmable data processing equipment to create a process executed by the computer can also provide steps for executing the functions described in the flowchart block(s).

[0042] Additionally, each block may represent a module, segment, or part of code containing one or more executable instructions for executing a specified logical function(s). It should also be noted that in some alternative practices, the functions mentioned in the blocks may occur out of order. For example, two blocks described in succession may actually be executed substantially simultaneously, or the blocks may be executed in reverse order according to their corresponding functions.

[0043] In this embodiment, the term "part" refers to a software or hardware component such as an FPGA (Field Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit), and the "part" performs certain roles. However, the meaning of "part" is not limited to software or hardware. The "part" may be configured to reside in an addressable storage medium or configured to run one or more processors. Thus, as an example, the "part" includes components such as software components, object-oriented software components, class components, and task components, as well as processes, functions, attributes, 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." In addition, the components and 'parts' may be implemented to utilize one or more CPUs within the device or secure multimedia card. Also, in the embodiments, 'parts' may include one or more processors.

[0044] Terms used in the following description to refer to broadcast information, control information, communication coverage, state changes (e.g., events), network entities, messages, and device components are examples provided for the convenience of explanation. Accordingly, the present disclosure is not limited to the terms described below, and other terms having equivalent technical meanings may be used.

[0045] For the convenience of the following explanation, the present invention uses terms and names defined in the LTE and NR specifications, which are the most recent standards defined by the 3GPP (The 3rd Generation Partnership Project) among currently existing communication standards. However, the present invention is not limited by the above terms and names and can be applied in the same way to systems conforming to other standards.

[0046] FIG. 1 is a drawing for explaining the technical field and purpose of the present disclosure.

[0047] Referring to FIG. 1, a base station 10 according to one embodiment of the present disclosure can perform a Tx power adaptation technique (transmission power adaptation / control technique) or a cell breathing technique that alternately uses a high Tx power (transmission power) and a low Tx power when controlling transmission power (Tx power).

[0048] A representative technology for reducing energy consumption in networks is cell activation / deactivation, as described in 3GPP TR 37.817. Cell activation / deactivation is an energy saving technique in the spatial domain that reduces energy by offloading traffic in a radio access network (RAN) with a layered structure of component carriers (CCs). According to cell activation / deactivation, energy consumed by the RAN can be reduced by deactivating cells corresponding to specific CCs. In addition, other technologies for reducing energy consumption in networks include techniques for turning power amplifiers (PAs) on and off and techniques for turning Tx paths on and off.

[0049] However, reducing base station Tx power in accordance with technologies designed to reduce energy consumption in existing networks leads to a decrease in coverage and the occurrence of coverage holes where terminals cannot connect to the network. Consequently, key performance indicators (KPIs) related to new terminal connections or mobility may decline. Therefore, a method is needed to appropriately control Tx power so that base stations can reduce network energy consumption while maintaining coverage. For example, a base station needs to reduce energy usage by adjusting Tx power low when there are no terminals located at the edge of a cell, after initially using high Tx power to secure coverage. Reducing the base station's Tx power from 55 dBm to 43 dBm results in a maximum energy saving effect of 47.6%.

[0050] To solve the above problems, the present disclosure proposes a method for supporting a Tx power adaptation technology that alternately uses high Tx power and low Tx power. According to one embodiment of the present disclosure, a base station 10 alternately uses high Tx power and low Tx power, thereby reducing energy consumed in the RAN while using low Tx power and ensuring coverage while using high Tx power periodically or temporarily. Through this, energy consumed in the RAN can be reduced while ensuring the connection of new terminals in a wireless communication system.

[0051] Specifically, in one embodiment of the present disclosure, a method is proposed for a base station (10) to obtain setting information regarding Tx power adaptation, a method to perform Tx power adaptation according to the setting information regarding Tx power adaptation obtained by the base station, and a method for a terminal to connect to the base station (10) that performs Tx power adaptation and to perform channel measurement.

[0052] The embodiments proposed in the present disclosure will be described in detail below with reference to FIGS. 2 to FIGS. 12.

[0053] FIG. 2 is a diagram illustrating a method (200) for a base station to obtain setting information regarding Tx power adaptation and perform Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure.

[0054] Referring to FIG. 2, in step 210, a base station according to one embodiment of the present disclosure can obtain setting information regarding Tx power adaptation.

[0055] In one embodiment, the base station can generate configuration information regarding Tx power adaptation using an AI (artificial intelligence) / ML (machine learning) model.

[0056] In this case, the AI / ML model can be pre-loaded within the base station and trained and inferred to generate configuration information regarding Tx power adaptation.

[0057] The base station can collect a measurement report (MR) from a terminal and generate statistical information on RSRP (or RSRQ or SINR) and the average number of RRC-connected UEs from the collected MR. The base station can perform training and inference of an AI / ML model to generate configuration information regarding Tx power adaptation based on the statistical information. This will be explained in detail with reference to FIGS. 3a and 3b.

[0058] In one embodiment, a base station may receive configuration information regarding Tx power adaptation from an OAM (Operations and Maintenance) server. The OAM server may generate configuration information regarding Tx power adaptation using an AI / ML model and transmit a message containing the generated configuration information regarding Tx power adaptation to the base station. The base station may obtain configuration information regarding Tx power adaptation by receiving a message containing configuration information regarding Tx power adaptation from the OAM server. The OAM server of the present disclosure may correspond to a SMO (service management and orchestration) server in an O-RAN architecture.

[0059] In this case, the AI / ML model can be pre-loaded within the OAM server and trained and inferred to generate configuration information regarding Tx power adaptation.

[0060] The base station can collect measurement reports (MR) from terminals and generate statistical information on Reference Signal Received Power (RSRP) (or Reference Signal Received Quality (RSRQ) or Signal-to-Interference-Plus-Noise Ratio (SINR)) and the average number of terminals in an RRC-connected state from the collected MRs. The base station can transmit the statistical information to an OAM server in the form of performance management (PM) data. The OAM server can perform training and inference of an AI / ML model to generate configuration information regarding Tx power adaptation based on the PM data received from the base station. This will be explained in detail with reference to FIGS. 3a and 3b.

[0061] In one embodiment, the setting information regarding Tx power adaptation (transmission power adaptation / control) may include at least one of information regarding Tx power pattern (transmission power pattern), information regarding adaptation duration (adaptation period), or information regarding the SSB (synchronization signal block) transmission period. This will be explained in detail with reference to FIGS. 4a and 4b.

[0062] In step 220, a base station according to one embodiment of the present disclosure can perform Tx power adaptation based on configuration information regarding acquired Tx power adaptation.

[0063] Based on information regarding the Tx power pattern, the adaptation duration, or the SSB (synchronization signal block) transmission period included in the acquired configuration information regarding Tx power adaptation, the base station can appropriately alternate between high Tx power and low Tx power. The base station can reduce energy consumed in the RAN while using low Tx power and secure coverage while using high Tx power. Through this, energy consumed in the RAN can be reduced while guaranteeing the connection of new terminals in the wireless communication system.

[0064] FIGS. 3a and 3b are drawings for explaining a method in which a base station or OAM server in a wireless communication system according to one embodiment of the present disclosure generates configuration information regarding Tx power adaptation using an AI / ML model.

[0065] Referring to FIG. 3a, in one embodiment, a base station or OAM server may generate setting information regarding Tx power adaptation based on adapted Tx power information (310) and Tx power adaptation interval information (320).

[0066] The adapted Tx power information (310) may represent the minimum Tx power required to support coverage for terminals currently connected to the cell. The adapted Tx power information (310) may indicate how much the base station can actually reduce the Tx power. In order to determine the adapted Tx power information that ensures adequate coverage, it is necessary to consider the location distribution of terminals currently connected to the cell.

[0067] The Tx power adaptation interval information (320) may refer to a period in which the default Tx power or the adapted Tx power is repeated. Here, the default Tx power may refer to the transmission power according to the fixed Tx power setting used by the base station, and the adapted Tx power may refer to the transmission power adjusted by the base station performing Tx power adaptation. In order to determine the Tx power adaptation interval information that ensures smooth connection of new terminals, it is necessary to consider the frequency of new connections of terminals.

[0068] In one embodiment, a base station or OAM server can determine minimum adapted Tx power information and Tx power adaptation interval information using an AI / ML model.

[0069] FIG. 3b illustrates an example of an AI / ML model loaded within a base station or OAM server to generate configuration information regarding Tx power adaptation.

[0070] Referring to FIG. 3b, the AI / ML model may be composed of an AI / ML model 1 (330) and optionally may additionally include an AI / ML model 2 (340). In one embodiment, a base station or OAM server may be equipped with an AI / ML model 1 (330) and / or an AI / ML model 2 (340) and may perform learning and inference of the AI / ML model 1 (330) and / or an AI / ML model 2 (340) to determine adapted Tx power information (310) and Tx power adaptation interval information (320).

[0071] The input data of the AI / ML model 1 (330) may include at least one of a current transmission power adaptation pattern (301), current RSRP (or RSRQ or SINR) statistical information (302), current average number of RRC connected UEs (303), predicted RSRP (or RSRQ or SINR) statistical information (304) or predicted average number of RRC connected UEs (305).

[0072] Input data Current RSRP (or RSRQ or SINR) statistical information (302) and Predicted RSRP (or RSRQ or SINR) statistical information (304) are information that can infer the location distribution of terminals currently connected to the cell.

[0073] RSRP (or RSRQ or SINR) statistical information can be collected from MR (measurement report) reported from the terminal, and, for example, may refer to statistical values ​​representing how many MRs were received within a specific RSRP (or RSRQ or SINR) range of the serving cell. For example, RSRP (or RSRQ or SINR) statistical information can be expressed in a sequence form such as [Table 1].

[0074] [Table 1]

[0075]

[0076] The example in [Table 1] shows each RSRP bin and the count value belonging to that bin. There are multiple bins from RSRP bin 1 to RSRP bin N, and the number of samples having RSRP values ​​within that range can be recorded in each bin. RsrpBin_1, RsrpBin_2, ..., RsrpBin_N may represent specific ranges of RSRP values. For example, RsrpBin_1 may represent the lowest RSRP value, and RsrpBin_N may represent the highest RSRP value. Count may represent the number of samples having RSRP values ​​belonging to each bin. A count value of 0 for RsrpBin_1 means there are no samples with RSRP values ​​in this range, a count value of 0 for RsrpBin_2 means there are no samples with RSRP values ​​in this range, a count value of 3 for RsrpBin_3 means there are 3 samples with RSRP values ​​in this range, and a count value of 1 for RsrpBin_N means there is 1 sample with RSRP values ​​in this range.

[0077] Input data Current average number of RRC connected UEs (303) and Predicted average number of RRC connected UEs (305) are information that can be used to infer the frequency of new connections of terminals.

[0078] AI / ML model 1 (330) can output at least one of adapted Tx power information (310) and Tx power adaptation interval information (320) based on at least one of the input data 301 to 305. In one example, AI / ML model 1 (300) can output the adapted Tx power information (310) in the form of spectral density (PSD).

[0079] In one example, the AI / ML model 1 (330) may be configured to output both outputs (e.g., adapted Tx power information 310 and Tx power adaptation interval information 320) from a single AI / ML model 1 (300), or it may be configured with two AI / ML sub-models that output each output individually.

[0080] In one embodiment, an AI / ML model 2 (340), which is a separate AI / ML model, may be used to predict the predicted RSRP (or RSRQ or SINR) statistical information (304) or the predicted average number of RRC connected UEs (305) among the input data of the AI / ML model 1 (330).

[0081] The input data of the AI / ML model 2 (340) may include a history of RSRP (or RSRQ or SINR) (306) or a history of the average number of RRC-connected UEs (307). The AI / ML model 2 (340) may analyze at least one of the input data 306 to 307 and output at least one of the predicted RSRP (or RSRQ or SINR) statistical information (304) or the predicted average number of RRC-connected UEs (305).

[0082] In one embodiment, a base station or OAM server may learn and infer an existing AI / ML model (e.g., AI / ML model 1 (300) (301) and / or AI / ML model 2 (301)) to determine adapted Tx power information and Tx power adaptation interval information, and generate configuration information regarding Tx power adaptation based on the determined adapted Tx power information and Tx power adaptation interval information.

[0083] The OAM server can transmit configuration information regarding the generated Tx power adaptation to the base station. Accordingly, a base station according to one embodiment of the present disclosure can obtain configuration information regarding the Tx power adaptation by producing it itself or by receiving it from the OAM server.

[0084] Below, with reference to FIGS. 4a to 4d, examples of configuration information regarding Tx power adaptation generated by a base station or OAM server will be described in detail.

[0085] FIGS. 4a to 4d are drawings for illustrating examples of setting information regarding Tx power adaptation according to one embodiment of the present disclosure.

[0086] In order for a base station to perform Tx power adaptation, it is necessary to configure an SSB pattern for transmitting an SSB required for cell connection. The configuration information regarding Tx power adaptation obtained by the base station in step 210 of FIG. 2 of the present disclosure may include various information related to an SSB pattern required for the base station to transmit an SSB when performing Tx power adaptation.

[0087] In one embodiment, the setting information regarding Tx power adaptation may include at least one of information regarding the Tx power pattern, information regarding the adaptation duration, or information regarding the SSB (synchronization signal block) transmission period.

[0088] Information regarding the Tx power pattern may indicate the arrangement / sequence of transmission powers to be used for actual SSB transmission when performing Tx power adaptation. The Tx power pattern may appropriately include high Tx power (e.g., 55 dBm, etc.) and low Tx powers (e.g., 49 dBm, 43 dBm, etc.), and accordingly, a base station according to one embodiment of the present disclosure can achieve a balance of energy saving and coverage by dynamically adjusting the Tx power.

[0089] Information regarding the adaptation duration may indicate a time interval during which the same adapted Tx power is sustained. Additionally, information regarding the adaptation duration may indicate a pattern / array / sequence of time intervals during which the same adapted Tx power is sustained. Accordingly, a base station according to one embodiment of the present disclosure can operate Tx power adaptation more precisely by dynamically controlling the adaptation duration, and can achieve a balance between energy saving and coverage acquisition.

[0090] Information regarding the SSB transmission period may indicate a commonly applicable SSB transmission period (common SSB periodicity) or an array / sequence of SSB transmission periods (pattern / array).

[0091] The following describes specific examples of configuration information regarding Tx power adaptation, but is not limited thereto.

[0092] Referring to FIG. 4a, information regarding the Tx power pattern (410a) may indicate an array of transmission powers [55 dBm, 49 dBm, 43 dBm] to be used for actual SSB transmission when performing Tx power adaptation. In the example of FIG. 4a, SSB A is an SSB transmitted with a transmission power of 55 dBm, SSB B is an SSB transmitted with a transmission power of 49 dBm, and SSB C is an SSB transmitted with a transmission power of 43 dBm.

[0093] Information regarding the adaptation duration (420a) may indicate a time interval of 100ms during which the same adapted Tx power is maintained. In the example of FIG. 4a, a Tx power of 55dBm is maintained for 100ms, a Tx power of 49dBm is maintained for 100ms, and a Tx power of 43dBm is maintained for 100ms.

[0094] Information regarding the SSB transmission period (430a) may indicate a common SSB transmission period (common SSB preodicity) of 20ms. In the example of FIG. 4a, SSB A is transmitted 5 times at 20ms intervals during 100ms with a Tx power of 55dBm, SSB B is transmitted 5 times at 20ms intervals during 100ms with a Tx power of 49dBm, and SSB C is transmitted 5 times at 20ms intervals during 100ms with a Tx power of 43dBm.

[0095] Referring to FIG. 4b, information regarding the Tx power pattern (410b) may indicate an array of transmission powers [55 dBm, 49 dBm, 43 dBm] to be used for actual SSB transmission when performing Tx power adaptation. In the example of FIG. 4b, SSB A is an SSB transmitted with a transmission power of 55 dBm, SSB B is an SSB transmitted with a transmission power of 49 dBm, and SSB C is an SSB transmitted with a transmission power of 43 dBm.

[0096] Information regarding the adaptation duration (420b) may indicate an array of time intervals in which the same adapted Tx power is sustained as [60ms, 100ms, 140ms]. In the example of FIG. 4b, a Tx power of 55dBm is sustained for 60ms, a Tx power of 49dBm is sustained for 100ms, and a Tx power of 43dBm is sustained for 140ms.

[0097] Information regarding the SSB transmission period (430b) may indicate a common SSB transmission period (common SSB preodicity) of 20ms. In the example of FIG. 4b, SSB A is transmitted 3 times at 20ms intervals during 60ms with a Tx power of 55dBm, SSB B is transmitted 5 times at 20ms intervals during 100ms with a Tx power of 49dBm, and SSB C is transmitted 7 times at 20ms intervals during 140ms with a Tx power of 43dBm.

[0098] Referring to FIG. 4c, information regarding the Tx power pattern (410c) may indicate an array of transmission powers [55 dBm, 49 dBm, 43 dBm] to be used for actual SSB transmission when performing Tx power adaptation. In the example of FIG. 4c, SSB A is an SSB transmitted with a transmission power of 55 dBm, SSB B is an SSB transmitted with a transmission power of 49 dBm, and SSB C is an SSB transmitted with a transmission power of 43 dBm.

[0099] Information regarding the adaptation duration (420c) may indicate a time interval of 100ms during which the same adapted Tx power is maintained. In the example of FIG. 4c, a Tx power of 55dBm is maintained for 100ms, a Tx power of 49dBm is maintained for 100ms, and a Tx power of 43dBm is maintained for 100ms.

[0100] Information regarding the SSB transmission period (430c) may indicate a pattern of SSB transmission periods [20ms, 40ms, 80ms]. In the example of FIG. 4c, SSB A is transmitted 5 times at 20ms intervals during 100ms with a Tx power of 55dBm, SSB B is transmitted 3 times at 40ms intervals during 100ms with a Tx power of 49dBm, and SSB C is transmitted 2 times at 80ms intervals during 100ms with a Tx power of 43dBm.

[0101] Referring to FIG. 4d, information regarding the Tx power pattern (410d) may indicate an array of transmission powers [55 dBm, 49 dBm, 55 dBm, 43 dBm] to be used for actual SSB transmission when performing Tx power adaptation. In the example of FIG. 4d, SSB A is an SSB transmitted with a transmission power of 55 dBm, SSB B is an SSB transmitted with a transmission power of 49 dBm, and SSB C is an SSB transmitted with a transmission power of 43 dBm.

[0102] Information regarding the adaptation duration (420d) may indicate a pattern of time intervals during which the same adapted Tx power is sustained as [20ms, 80ms, 20ms, 180ms]. In the example of FIG. 4d, a Tx power of 55dBm is sustained for 20ms, a Tx power of 49dBm is sustained for 80ms, a Tx power of 55dBm is sustained again for 20ms, and a Tx power of 43dBm is sustained for 180ms.

[0103] Information regarding the SSB transmission period (430d) may indicate a pattern of SSB transmission periods as [20ms, 40ms, 20ms, 60ms]. In the example of FIG. 4d, SSB A is transmitted once at 20ms intervals during 20ms when the Tx power of 55dBm is maintained, SSB B is transmitted twice at 40ms intervals during 80ms when the Tx power of 49dBm is maintained, SSB A is transmitted once at 20ms intervals during 20ms when the Tx power of 55dBm is maintained, and SSB C is transmitted three times at 80ms intervals during 180ms when the Tx power of 43dBm is maintained.

[0104] A base station according to one embodiment of the present disclosure can reduce energy consumed by the RAN while ensuring coverage by obtaining configuration information regarding Tx power adaptation based on an AI / ML model and dynamically setting a Tx power pattern, an adaptation duration pattern, etc., in the configuration information regarding Tx power adaptation to perform Tx power adaptation.

[0105] FIG. 5 is a diagram illustrating a method for a base station (10) to perform Tx power adaptation based on setting information regarding Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure.

[0106] Referring to FIG. 5, in step 510, a base station (10) according to one embodiment of the present disclosure can determine whether the entering condition of Tx power adaptation is satisfied.

[0107] The entry condition for Tx power adaptation may refer to a trigger condition for applying Tx power adaptation. The entry condition for Tx power adaptation may be defined as a condition corresponding to a situation where the performance of the terminal does not significantly degrade even when the base station (10) applies Tx power adaptation. For example, the entry condition for Tx power adaptation may be defined as when there is a specific time condition (e.g., 0:00 <= current time <= 3:00) or when KPIs such as the number of currently connected terminals or current resource usage fall below a specific threshold, but is not limited thereto.

[0108] In one embodiment, the base station (10) may generate the entry condition for Tx power adaptation itself. Alternatively, the base station (10) may receive the entry condition for Tx power adaptation from an OAM server. Alternatively, the entry condition for Tx power adaptation may be set by a user in the base station (10) as a network operation parameter.

[0109] In one embodiment, the base station (10) can check / identify whether the entry conditions for Tx power adaptation are satisfied through periodic monitoring.

[0110] In step 520, if the base station (10) determines that the entry condition is satisfied, it may transmit a reporting message containing configuration information regarding Tx power adaptation to one or more adjacent base stations (20) via the Xn interface.

[0111] The base station (10) may notify one or more adjacent base stations (20) through a reporting message that the base station (10) has satisfied the entry conditions for Tx power adaptation and will perform Tx power adaptation according to the configuration information regarding Tx power adaptation. The configuration information regarding Tx power adaptation included in the reporting message is the same information as the configuration information regarding Tx power adaptation obtained by the base station (10) in step 210 of FIG. 2 of the present disclosure.

[0112] In step 530, one or more adjacent base stations (20) may decide whether to accept or reject the Tx power adaptation of the base station (10).

[0113] One or more adjacent base stations (20) that receive a reporting message may decide whether to approve or reject by considering the KPI of each adjacent base station (20). For example, if a base station (10) performs Tx power adaptation in a situation where the proportion of terminals connected to the cell edge is high and the handover-related KPI is low, the mobility KPI may be lowered further. The adjacent base stations (20) corresponding to this situation may decide to reject.

[0114] In step 540, the base station (10) may receive an acceptance message or a rejection message from one or more adjacent base stations (20) in response to a reporting message. The acceptance message may include a 1-bit indicator indicating acceptance, and the rejection message may include a 1-bit indicator indicating rejection.

[0115] In one embodiment, the acceptance message may include timing offset information related to Tx power adaptation. For example, the timing offset information may be offset information regarding the system frame number (SFN). The adjacent base station (20) may calculate the timing offset based on configuration information regarding Tx power adaptation included in the reporting message (e.g., information regarding the Tx power pattern, information regarding the adaptation duration, and information regarding the SSB transmission period). Based on the timing offset information included in the acceptance message, the base station (10) may synchronize the Tx power adaptation between the base station (10) and the adjacent base station (20). For example, the timing when the network has full coverage may be synchronized between the base station (10) and the adjacent base stations (20).

[0116] In step 550, the base station (10) may determine whether to perform Tx power adaptation based on an acknowledgment message or a rejection message received from one or more adjacent base stations (20). If the base station (10) decides to perform Tx power adaptation, it may change the settings according to the setting information regarding Tx power adaptation.

[0117] In one embodiment, the base station (10) may decide to perform Tx power adaptation only when it receives acknowledgment messages from all adjacent base stations (20). In one embodiment, the base station (10) may decide to perform Tx power adaptation only when it receives acknowledgment messages from N (N>=1) or more adjacent base stations (20). In one embodiment, the base station (10) may decide to perform Tx power adaptation only when it receives acknowledgment messages from 1 / 2 or more (or other specific ratio (i.e., 3 / 4)) of the adjacent base stations (20).

[0118] In step 560, the base station (10) may transmit an indication message to one or more adjacent base stations (20) indicating that it has decided to perform Tx power adaptation.

[0119] In one embodiment, the base station (10) may periodically / non-periodically / quasi-statically transmit the reporting message of step 520 to one or more adjacent base stations (20) without determining whether the entering condition is satisfied. In this case, the base station (10) may determine whether to perform Tx power adaptation of the base station (10) based solely on the acceptance / rejection of the adjacent base stations (20).

[0120] In one embodiment, the base station (10), after receiving an approval or rejection message from adjacent base stations (20) according to steps 520 and 530, determines whether the entry condition of step 510 is satisfied, and if it determines that the entry condition is satisfied, it may decide to perform Tx power adaptation.

[0121] According to one embodiment of the present disclosure, since a base station applies Tx power adaptation and a coverage reduction effect occurs during the adaptation duration when low Tx power is used, it is necessary for adjacent base stations to compensate by expanding coverage as much as possible during this period. Accordingly, a base station according to one embodiment of the present disclosure can compensate for the coverage reduction resulting from the performance of Tx power adaptation by confirming the acceptance or rejection of adjacent base stations, without independently deciding not to perform Tx power adaptation.

[0122] FIG. 6 is a drawing for explaining a method (600) in which a base station in a wireless communication system according to one embodiment of the present disclosure stops Tx power adaptation and changes to a default Tx power setting.

[0123] Referring to FIG. 6, in step 610, a base station (10) according to one embodiment of the present disclosure can determine whether the leaving condition of Tx power adaptation is satisfied.

[0124] The exit condition for Tx power adaptation may refer to a trigger condition for falling back to the existing default Tx power setting without applying Tx power adaptation. For example, the exit condition for Tx power adaptation may be defined as when mobility KPIs such as UE throughput, handover failure (RLF) rate, RACH failure, etc., fall below a specific threshold, but is not limited to these.

[0125] In one embodiment, the base station (10) may generate the Tx power adaptation exit condition itself. Alternatively, the base station (10) may receive the Tx power adaptation exit condition from an OAM server. Alternatively, the Tx power adaptation exit condition may be set by a user in the base station (10) as a network operation parameter.

[0126] In one embodiment, the base station (10) can check / identify whether the Tx power adaptation exit condition is satisfied through periodic monitoring while performing Tx power adaptation.

[0127] In step 620, if the base station (10) according to one embodiment of the present disclosure determines that the exit condition is satisfied, it may stop performing Tx power adaptation and change to a default Tx power setting.

[0128] According to one embodiment of the present disclosure, since the coverage is reduced during the adaptation duration when a base station applies Tx power adaptation and uses low Tx power, the problem caused by the reduction in coverage can be compensated for by periodically monitoring the out-of-bounds conditions and allowing it to fall back to the default Tx power setting when it is necessary to increase coverage.

[0129] Hereinafter, with reference to FIGS. 7 to 9b, a method for setting parameters necessary for a terminal to initially connect to a base station when a base station performs Tx power adaptation ( FIGS. 7 to 8) or a method for setting parameters necessary for a terminal to perform channel measurement at a base station ( FIGS. 9a to 9b) will be explained.

[0130] According to one embodiment of the present disclosure, when a base station decides to perform Tx power adaptation, it may transmit to a terminal, via upper layer signaling (e.g., SSB, SIB, RRC messages, etc.), information necessary for initial connection to the base station applying Tx power adaptation and / or information necessary for measuring the channel applying Tx power adaptation. Based on the information necessary for initial connection to the base station applying Tx power adaptation and / or information necessary for measuring the channel applying Tx power adaptation received from the base station via upper layer signaling (e.g., SSB, SIB, RRC messages, etc.), the terminal may make an initial connection to the said base station, perform channel measurement, and report the measurement results.

[0131] FIG. 7 is a diagram illustrating a method for a terminal (30) to connect to a base station (10) that performs Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure.

[0132] Referring to FIG. 7, in step 710, a base station (10) according to one embodiment of the present disclosure may transmit an SSB (synchronization signal block) including an indicator indicating whether to apply Tx power adaptation to a terminal (30).

[0133] In one embodiment, the SSB may include an indicator indicating whether Tx power adaptation is applied to the master information block (MIB). The base station (10) may utilize a 1-bit space that is left empty as a spare in the MIB of the current NR standard, as shown in [Table 2], as an indicator indicating whether Tx power adaptation is applied. For example, the base station (10) may set the corresponding 1-bit to '1' when applying Tx power adaptation, and may leave the corresponding 1-bit empty or set it to '0' when not applying Tx power adaptation.

[0134] [Table 2]

[0135]

[0136] When an indicator indicating whether Tx power adaptation is applied indicates 'Tx power adaptation applied (e.g., 1-bit set to '1')', the terminal (30) can know that the cell is performing Tx power adaptation by decoding the MIB during initial access and can be induced to measure the SSB for a longer period of time.

[0137] In one embodiment, an SSB including an indicator indicating the application of Tx power adaptation may further include additional information related to Tx power adaptation. For example, the additional information related to Tx power adaptation may further include at least one of: information regarding the adaptation duration; information regarding the time from the current SSB to the next SSB to which Tx power adaptation is not applied; index information related to the beam; or repetition information of an SSB transmitted with the same Tx power. Such information may help improve the initial access performance of the terminal or improve the SSB decoding performance.

[0138] In step 720, the terminal (10) can initially connect to the base station (10) that performs Tx power adaptation based on the SSB received from the base station (10).

[0139] According to one embodiment of the present disclosure, when a base station performs Tx power adaptation, a terminal can smoothly establish an initial connection to the base station performing Tx power adaptation based on Tx power adaptation indicator information included in the SSB and various additional information related to Tx power adaptation.

[0140] FIG. 8 is a diagram illustrating a method for a terminal (30) to connect to a base station (10) that performs Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure.

[0141] Referring to FIG. 8, in step 810, a base station (10) according to one embodiment of the present disclosure may transmit system information to a terminal (30) including sequence information of offsets for correcting a received signal controlled by Tx power adaptation. Here, the sequence information may include offset values ​​corresponding to each SSB index.

[0142] When the terminal performs cell selection, it receives a single value from q-RxLevMinOffset and q-QualMinOffset within SIB1 and can perform cell selection when the offset value is exceeded. However, when the base station performs Tx power adaptation, the Tx power may differ for each SSB, so it is necessary to set different offset values ​​for each Tx power adapted SSB.

[0143] For example, assume that SIB1 is generated at the base station's CU (central unit) at specific periodicity intervals (e.g., 160 ms) and transmitted to the base station's DU (distributed unit), and that the DU transmits the SIB1 generated by the CU to the terminal at specific repetition periodicity intervals (<= 160 ms). In this case, if q-RxLevMinOffset and q-QualMinOffset are transmitted as single values, a problem may arise where offset values ​​can be set differently for each Tx power adapted SSB using q-RxLevMinOffset and q-QualMinOffset only in the case of Tx power adaptation with an adaptation duration longer than the CU's specific periodicity (e.g., 160 ms). However, if q-RxLevMinOffset and q-QualMinOffset are transmitted in the form of a sequence or array rather than as single values, it becomes possible to apply a corresponding offset to each Tx power adapted SSB even when the terminal has a short adaptation duration.

[0144] Therefore, the base station can transmit q-RxLevMinOffset and q-QualMinOffset within the SIB in the form of a sequence / array with different values ​​for each SSB index, rather than as a single value. [Table 3] illustrates q-RxLevMinOffset and q-QualMinOffset within SIB1.

[0145] [Table 3]

[0146]

[0147] In one embodiment, the system information is not limited to SIB 1 and may be on-demand system information.

[0148] In step 820, the terminal (30) can correct the received signal strength of the Tx power adapted SSB based on offset values ​​in the sequence information based on system information received from the base station (10) and select the cell with the best signal strength.

[0149] In one embodiment, the terminal (30) can obtain the index of a received SSB by decoding the Physical Broadcast Channel (PBCH) of the SSB to obtain the Most Significant Bit (MSB) of the SSB index and decoding the Demodulation Reference Signal (DMRS) to obtain the Least Significant Bit (LSB) of the SSB index. The terminal (30) can correct the received signal strength of the corresponding SSB based on an offset value within the sequence information corresponding to the obtained SSB index.

[0150] According to one embodiment of the present disclosure, when a base station performs Tx power adaptation, a terminal can connect to the cell with the best signal strength by compensating for the signal strength reduced according to Tx power adaptation based on the sequence information of the offset in the SIB at the time of initial connection.

[0151] A connected terminal connected to a base station performing Tx power adaptation needs to consider the adapted Tx power when measuring SSB or CSI-RS.

[0152] In one embodiment, the base station transmits an offset to the terminal to correct the adapted Tx power, and the terminal can perform correction by applying the offset equal to the adjusted Tx power to the actual measured value. Through the correction, the terminal can estimate how much the transmission power would have been if the Tx power adaptation had not been applied, and can report the correction result to the base station. This will be explained in detail in FIGS. 9a and 9b.

[0153] In one embodiment, the terminal reports the actual channel measurement value according to the adapted Tx power to the base station, and the base station can use the channel measurement value sent by the terminal by correcting it by the transmission power reduced due to the application of Tx power adaptation.

[0154] FIG. 9a is a diagram illustrating a method for a terminal (30) connected to a base station (10) performing Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure to measure a channel.

[0155] Referring to FIG. 9a, in step 910, a base station (10) according to one embodiment of the present disclosure may transmit to a terminal (30) an RRC (radio resource control) message (e.g., an RRC reconfiguration message) containing information related to an offset for correcting a receiving channel measurement controlled by Tx power adaptation.

[0156] In one embodiment, information related to an offset for correcting a receiving channel measurement controlled by Tx power adaptation may include the following information.

[0157] - Power offset sequence for Tx power adaptation: Information regarding the array of power offsets for correction of NZP-CSI-RS or CSI-SSB measurements, etc.

[0158] - Power offset period sequence for Tx power adaptation: Information regarding the sequence of durations for each of the above power offsets

[0159] For example, the above information may be included in NZP-CSI-RS-ResourceSet, CSI-SSB-ResourceSet, or CSI-ResourceConfig, but is not limited thereto. [Table 4] illustrates NZP-CSI-RS-ResourceSet, and [Table 5] illustrates CSI-SSB-ResourceSet.

[0160] [Table 4]

[0161]

[0162] [Table 5]

[0163]

[0164] In one embodiment, information related to an offset for correcting a received channel measurement controlled by Tx power adaptation may include information for correcting channel measurement values ​​related to mobility, such as terminal handover. This will be explained in detail with reference to FIG. 9b.

[0165] In step 920, the terminal (30) can perform a correction by applying an offset of the reduced Tx power to the actual measured value based on information regarding an offset for correcting a receiving channel measurement controlled by Tx power adaptation. Through the correction, the terminal (30) can estimate how much the transmission power would have been if Tx power adaptation had not been applied.

[0166] In step 930, the terminal (30) can report the corrected channel measurement result to the base station (10).

[0167] According to one embodiment of the present disclosure, when a terminal is connected to a base station that performs Tx power adaptation, channel measurement can be performed efficiently by considering the adapted Tx power during SSB or CSI-RS measurement.

[0168] FIG. 9b is a diagram illustrating an example of a MeasObjectNR included in an RRC message received by a terminal (30) connected to a base station (10) performing Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure.

[0169] For example, the MeasObjectNR in the Measurement configuration may include the following information.

[0170] - Configuration index: An ID representing the measurement for an SSB transmitted at the same Tx power.

[0171] - SSB-MTC periodicity: The measurement period of the SSB corresponding to the index (SSB-MTC measurement window period)

[0172] - Adaptation window: The window range where measurements for the corresponding index can be performed.

[0173] - Adaptation timing offset: The timing offset from the corresponding index to the start of the adaptation window (= first SSB index).

[0174] - Adaptation power offset: Power offset to correct the received signal strength measured at the corresponding index

[0175] Referring to FIG. 9b, it is assumed that a base station performs Tx power adaptation according to the configuration for Tx power adaptation of FIG. 4d of the present disclosure. At this time, the terminal may receive an RRC reconstruction message from the base station that includes a MeasObjectNR for correcting a received channel measurement controlled by Tx power adaptation.

[0176] In the example of FIG. 9b, MeasObjectNR may include 4 Configuration indices (index 1, index 2, index 3, index 4).

[0177] For index 1, the SSB-MTC periodicity can be set to 20ms, the Adaptation window to 20ms, the Adaptation timing offset to 0ms, and the Adaptation power offset to 0. Setting the Adaptation power offset to 0 means that the received signal strength of SSB A measured in the Adaptation window corresponding to index 1 does not need to be corrected.

[0178] For index 2, the SSB-MTC periodicity can be set to 40ms, the Adaptation window to 80ms, the Adaptation timing offset to 20ms, and the Adaptation power offset to 1. Setting the Adaptation power offset to 1 means that the received signal strength of SSB B measured in the Adaptation window corresponding to index 2 must be corrected by an offset of 1, which is 55-49 dBm in this example.

[0179] For index 3, the SSB-MTC periodicity can be set to 20ms, the Adaptation window to 20ms, the Adaptation timing offset to 100ms, and the Adaptation power offset to 0. Setting the Adaptation power offset to 0 means that the received signal strength of SSB A in the Adaptation window corresponding to index 3 does not need to be corrected.

[0180] For index 4, the SSB-MTC periodicity can be set to 60ms, the Adaptation window to 180ms, the Adaptation timing offset to 120ms, and the Adaptation power offset to 2. Setting the Adaptation power offset to 2 means that the received signal strength of SSB C in the Adaptation window corresponding to index 4 must be corrected by an offset of 2, which is 55-43 dBm in this example.

[0181] FIG. 10 is a diagram illustrating a method for a base station (10) to receive configuration information regarding Tx power adaptation from an OAM server (100) in a wireless communication system according to one embodiment of the present disclosure and to perform Tx power adaptation.

[0182] Referring to FIG. 10, in step 1010, the OAM server (100) can generate configuration information regarding Tx power adaptation based on AL / ML. The OAM server (100) may correspond to an SMO (service management and orchestration) server in an O-RAN architecture.

[0183] In this case, the AI / ML model can be pre-loaded in the OAM server (100) and trained and inferred to generate configuration information regarding Tx power adaptation.

[0184] A base station (10) can collect a measurement report (MR) from a terminal (30) and generate statistical information on the average number of terminals in an RRC connected state and statistical information on the Reference Signal Received Power (RSRP) (or Reference Signal Received Quality (RSRQ) or Signal-to-Interference-Plus-Noise Ratio (SINR)) from the collected MR. The base station (10) can transmit the statistical information to an OAM server (100) in the form of performance management (PM) data. The OAM server (100) can perform training and inference of an AI / ML model to generate configuration information regarding Tx power adaptation based on the PM data received from the base station (30). Here, descriptions that overlap with those described in FIGS. 3a and 3b are omitted, and FIGS. 3a and 3b are referenced.

[0185] In step 1020, the OAM server (100) can transmit a message containing configuration information regarding Tx power adaptation to the base station (30). The base station (30) can receive configuration information regarding Tx power adaptation from the OAM server (100).

[0186] In one embodiment, a message containing configuration information regarding the Tx power adaptation of step 1020 may include a Tx power adaptation pattern IE. Examples of configurations for the Tx power adaptation pattern IE are as follows, but are not limited thereto.

[0187] - Type 1) Consists of Tx power pattern sequence, adaptation duration, and Common SSB periodicity

[0188] - type 2-1) Consists of Tx power pattern sequence, adaptation duration pattern sequence, and Common SSB periodicity

[0189] - type 2-2) It may be composed of multiple sets consisting of {Pattern ID, Tx power, adaptation duration} and Common SSB periodicity, for example as shown in [Table 6].

[0190] [Table 6]

[0191]

[0192] - type 3-1) Consists of Tx power pattern sequence, adaptation duration, and SSB periodicity pattern sequence

[0193] - type 3-2) Consists of multiple sets of {Pattern ID, Tx power, SSB periodicity} and adaptation duration

[0194] - type 4-1) Consists of Tx power pattern sequence, adaptation duration pattern sequence, and SSB periodicity pattern sequence

[0195] - type 4-2) is composed of multiple sets consisting of {Pattern ID, Tx power, adaptation duration, SSB periodicity}, for example, type 4-2) can be configured in the form of {Pattern ID, Tx power, 20 ms, 20 ms}, {Pattern ID, Tx power, 80 ms, 40 ms}, {Pattern ID, Tx power, 180 ms, 60 ms}, {Pattern ID, Tx power, 160 ms, 20 ms}, {Pattern ID, Tx power, 160 ms, 40 ms}, {Pattern ID, Tx power, 160 ms, 80 ms}, etc.

[0196] According to one embodiment of the present disclosure, when indexing SSB-related patterns used in Tx power adaptation using a Pattern ID in a Tx power adaptation pattern IE, there is an advantage in that signals can be efficiently transmitted and received by utilizing the Pattern ID in situations where reporting is required, such as when the performance of a specific Tx power is degraded due to some cause.

[0197] In one embodiment, in the Tx power adaptation pattern IE of type 1, type 2-1, type 3-1, and type 4-1, the pattern sequences may be composed of a single sequence or may be composed of a combination of subsequences. For example, the Tx power pattern sequence may be composed of a single sequence [55 dBm, 49 dBm, 55 dBm, 43 dBm], or may be composed as a combination of subsequence 1 = (Id_0, [55 dBm, 49 dBm]) and subsequence 2 = (Id_1, [55 dBm, 43 dBm]), such as Tx power pattern sequence = [Id_0, Id_1].

[0198] In one embodiment, the message containing setting information regarding the Tx power adaptation of step 1020 may additionally include information regarding the entry condition of the Tx power adaptation and / or the exit condition of the Tx power adaptation. Here, descriptions that overlap with those described in FIGS. 5 and 6 are omitted, and FIGS. 5 and 6 are referenced.

[0199] Steps 1030 to 1080 may operate in the same manner as steps 510 to 560 of FIG. 5. Here, descriptions that overlap with those described in FIG. 5 are omitted, and FIG. 5 is referenced.

[0200] Step 1085 can operate in the same way as Step 910 of FIG. 9. Here, explanations that overlap with those described in FIG. 9 are omitted, and FIG. 9 is referenced.

[0201] Step 1090 can operate in the same way as Step 710 of FIG. 7. Here, explanations that overlap with those described in FIG. 7 are omitted, and FIG. 7 is referenced.

[0202] Step 1095 can operate in the same way as Step 810 of FIG. 8. Here, explanations that overlap with those described in FIG. 8 are omitted, and FIG. 8 is referenced.

[0203] In one embodiment, the base station (10) may periodically / non-periodically / quasi-statically transmit the reporting message of step 1040 to one or more adjacent base stations (20) without determining whether the entering condition is satisfied. In this case, the base station (10) may determine whether to perform Tx power adaptation of the base station (10) based solely on the acceptance / rejection of the adjacent base stations (20).

[0204] In one embodiment, the base station (10), after receiving an approval or rejection message from adjacent base stations (20) according to steps 1050 and 1060, determines whether the entry condition of step 1030 is satisfied, and if it determines that the entry condition is satisfied, it may decide to perform Tx power adaptation.

[0205] According to one embodiment of the present disclosure, an OAM server generates configuration information regarding Tx power adaptation using an AI / ML model, and a base station receives and utilizes the configuration information generated by the OAM server, thereby distributing the load of the RAN and improving network performance.

[0206] FIG. 11 is a diagram illustrating a method for a terminal to connect to a base station performing Tx power adaptation in a wireless communication system according to one embodiment of the present disclosure. Here, descriptions that overlap with those described in FIG. 7 are omitted, and reference is made to FIG. 7.

[0207] Referring to FIG. 11, in step 1110, a terminal according to one embodiment of the present disclosure may receive a synchronization signal block (SSB) from a base station that includes an indicator indicating whether to apply Tx power adaptation. Step 1110 may operate in the same manner as step 710 of FIG. 7. Here, descriptions that overlap with those described in FIG. 7 are omitted, and FIG. 7 is referenced.

[0208] Here, the SSB may further include at least one of: information regarding the adaptation duration; information regarding the time from the current SSB to the next SSB to which Tx power adaptation is not applied; index information related to the beam; or repetition information of the SSB transmitted with the same Tx power.

[0209] In step 1120, the terminal can perform an initial connection to a base station that applies Tx power adaptation based on the SSB. Step 1120 can operate in the same way as step 720 of FIG. 7. Here, descriptions that overlap with those described in FIG. 7 are omitted, and FIG. 7 is referenced.

[0210] According to one embodiment of the present disclosure, when a base station performs Tx power adaptation, a terminal can smoothly establish an initial connection to the base station performing Tx power adaptation based on Tx power adaptation indicator information included in the SSB and various additional information related to Tx power adaptation.

[0211] FIG. 12 is a block diagram of a base station (1200) according to one embodiment. Base station 1200 may correspond to base station 10 of the present disclosure.

[0212] Referring to FIG. 12, a base station (1200) may be composed of a transceiver (1210), a processor (1220), and a memory (1230). Depending on the communication method of the base station (1200) described above, the transceiver (1210), the processor (1220), and the memory (1230) of the base station (1200) may operate. However, the components of the base station (1200) are not limited to the examples described above. For example, the base station (1200) may include more components or fewer components than the components described above. In one embodiment, the transceiver (1210), the processor (1220), and the memory (1230) may be implemented in the form of a single chip. Additionally, the processor (1220) may include one or more processors.

[0213] The transceiver (1210) is a collective term for the receiver and the transmitter of the base station (1200), and can transmit and receive signals with a network entity including a UE (1300). The signals transmitted and received with the network entity including the UE (1300) may include control information and data. To this end, the transceiver (1210) may be composed of an RF transmitter that up-converts and amplifies the frequency of a transmitted signal, and an RF receiver that low-noise amplifies a received signal and down-converts the frequency. However, this is one embodiment of the transceiver (1210), and the components of the transceiver (1210) are not limited to an RF transmitter and an RF receiver.

[0214] Additionally, the transceiver (1210) can perform functions for transmitting and receiving signals through a wireless channel. For example, the transceiver (1210) can receive a signal through a wireless channel and output it to a processor (1220), and transmit the signal output from the processor (1220) through a wireless channel.

[0215] The memory (1230) can store programs and data necessary for the operation of the base station (1200). Additionally, the memory (1230) can store control information or data included in signals obtained from the base station (1200). The memory (1230) may be composed of a storage medium or a combination of storage media such as ROM, RAM, hard disk, CD-ROM, and DVD. Additionally, the memory (1230) may not exist separately but may be configured to be included in the processor (1220). The memory (1230) may be composed of volatile memory, non-volatile memory, or a combination of volatile and non-volatile memory. Furthermore, the memory (1230) can provide stored data upon the request of the processor (1220). Computer programs, code, or instructions that can be executed by the processor (1220) may be stored in the memory (1230). According to one embodiment, a computer program, code, or instruction that can be executed by a processor (1220) may be stored in a single memory device or may be separated and distributed among two or more memory devices. The processor (1220) may perform various functions according to an embodiment of the present disclosure by executing instructions stored in memory (1230). According to one embodiment of the present disclosure, the operation of a base station (1200) may be caused to be performed based on at least one processor (or processing circuit), a processing circuitry not configured to execute instructions, and / or a component of a processing circuitry not configured to execute instructions, configured to perform the features of the present disclosure individually, collectively, or in any combination based on the execution of instructions (or computer program or code) stored in memory (1230).

[0216] The processor (1220) can control a series of processes to enable the base station (1200) to operate according to the embodiments of the present disclosure described above. For example, the processor (1220) can receive control signals and data signals through the transceiver (1210) and process the received control signals and data signals. The processor (1220) can transmit the processed control signals and data signals through the transceiver (1210). Additionally, the processor (1220) can write or read data to or from the memory (1230). The processor (1220) can perform the functions of the protocol stack required by the communication standard. To this end, the processor (1220) may include at least one processor or microprocessor. In one embodiment, a part of the transceiver (1210) or the processor (1220) may be referred to as a communication processor (CP).

[0217] The processor (1220) may be composed of one or more processors. In this case, the one or more processors may be general-purpose processors such as CPUs, APs, and DSPs (Digital Signal Processors), graphics-dedicated processors such as GPUs and VPUs (Vision Processing Units), or artificial intelligence-dedicated processors such as NPUs. For example, if one or more processors are artificial intelligence-dedicated processors, the artificial intelligence-dedicated processors may be designed with a hardware structure specialized for processing a specific artificial intelligence model. The processor (1220) may include at least one processor (or processor circuitry), and at least one processor may perform the following operations individually, collectively, or in any combination. In a specific embodiment, at least one part of the processor (1220) may be included in one chip, and another part of the processor (1220) may be included in a separate chip. Alternatively, at least one processor may be included in other components, such as a transceiver (1210) or memory (1230). The processor (1220) may perform, cause, or control operations of a base station for performing at least one or a combination thereof of the methods according to embodiments of the present disclosure. To this end, the processor (1220) may control other components of the base station (1200) to perform various operations by executing computer programs, code, and instructions stored in memory (1230).

[0218] In one embodiment, the base station (1200) can obtain configuration information regarding Tx power adaptation by the processor (1220) executing instructions stored in memory (1230) alone or in combination. The base station (1200) can perform Tx power adaptation based on the obtained configuration information regarding Tx power adaptation by the processor (1220) executing instructions stored in memory (1230) alone or in combination.

[0219] In one embodiment, by the processor (1220) executing instructions stored in memory (1230) alone or in combination, the base station (1200) can obtain setting information regarding the Tx power adaptation by generating setting information regarding the Tx power adaptation using an AI / ML model installed in the base station (1200).

[0220] In one embodiment, by having the processor (1220) execute a command stored in memory (1230) alone or in combination, the base station (1200) can obtain the configuration information regarding the Tx power adaptation by receiving a message containing configuration information regarding the Tx power adaptation from an OAM (Operations and Maintenance) server.

[0221] In one embodiment, the setting information regarding Tx power adaptation may include at least one of information regarding the Tx power pattern, information regarding the adaptation duration, or information regarding the SSB (synchronization signal block) transmission period.

[0222] In one embodiment, by the processor (1220) executing instructions stored in memory (1230) alone or in combination, the base station (1200) can determine whether the entering condition of Tx power adaptation is satisfied. By the processor (1220) executing instructions stored in memory (1230) alone or in combination, the base station (1200) can transmit a report message containing configuration information regarding Tx power adaptation to one or more adjacent base stations if the entering condition is satisfied. By the processor (1220) executing instructions stored in memory (1230) alone or in combination, the base station (1200) can receive an acceptance message or a rejection message from one or more adjacent base stations. By the processor (1220) executing instructions stored in memory (1230) alone or in combination, the base station (1200) can determine whether to perform Tx power adaptation based on the acceptance message or the rejection message.

[0223] In one embodiment, by having the processor (1220) execute instructions stored in memory (1230) alone or in combination, the base station (1200) can determine whether the leaving condition of Tx power adaptation is satisfied. If the leaving condition is satisfied, the processor (1220) can stop the execution of Tx power adaptation and change to a default Tx power setting.

[0224] In one embodiment, by having the processor (1220) execute an instruction stored in memory (1230) alone or in combination, the base station (1200) may transmit an SSB to a terminal (1300) that includes an indicator indicating whether Tx power adaptation is applied. The SSB may further include at least one of: information regarding the adaptation duration; information regarding the time information from the current SSB to the next SSB to which Tx power adaptation is not applied; index information related to the beam; or repetition information of the SSB transmitted with the same Tx power.

[0225] In one embodiment, by the processor (1220) executing instructions stored in memory (1230) alone or in combination, the base station (1200) can transmit system information including sequence information of offsets for correcting a received signal controlled by Tx power adaptation to a terminal (1300). The sequence information may include offset values ​​corresponding to each SSB index.

[0226] In one embodiment, by the processor (1220) executing instructions stored in memory (1230) alone or in combination, the base station (1200) can transmit a radio resource control (RRC) message to a terminal (1300) that includes information related to an offset for correcting a received channel measurement controlled by Tx power adaptation. The processor (1220) can receive from the terminal (1300) a result of correcting the channel measurement based on the information related to the offset.

[0227] FIG. 13 is a block diagram of a UE (1300) according to one embodiment of the present disclosure. UE 1300 may correspond to UE 30 of the present disclosure.

[0228] Referring to FIG. 13, the UE (1300) may be composed of a transceiver (1310), a processor (1320), and a memory (1330). Depending on the communication method of the UE (1300) described above, the transceiver (1310), the processor (1320), and the memory (1330) of the UE (1300) may operate. However, the components of the UE (1300) are not limited to the examples described above. For example, the UE (1300) may include more components or fewer components than the components described above. In one embodiment, the transceiver (1310), the processor (1320), and the memory (1330) may be implemented in the form of a single chip. Additionally, the processor (1320) may include one or more processors.

[0229] The transceiver (1310) is a collective term for the receiver and the transmitter of the UE (1300), and can transmit and receive signals with a network entity including a base station (1200). The signals transmitted and received with the network entity including the base station (1200) may include control information and data. To this end, the transceiver (1310) may be composed of an RF transmitter that up-converts and amplifies the frequency of a transmitted signal, and an RF receiver that low-noise amplifies a received signal and down-converts the frequency. However, this is one embodiment of the transceiver (1310), and the components of the transceiver (1310) are not limited to an RF transmitter and an RF receiver.

[0230] Additionally, the transceiver (1310) can perform functions for transmitting and receiving signals through a wireless channel. For example, the transceiver (1310) can receive a signal through a wireless channel and output it to a processor (1320), and transmit the signal output from the processor (1320) through a wireless channel.

[0231] Memory (1330) can store programs and data necessary for the operation of the UE (1300). Additionally, memory (1330) can store control information or data included in signals obtained from the UE (1300). Memory (1330) may be composed of a storage medium or a combination of storage media such as ROM, RAM, hard disk, CD-ROM, and DVD. Additionally, memory (1330) may not exist separately but may be configured to be included in the processor (1320). Memory (1330) may be composed of volatile memory, non-volatile memory, or a combination of volatile and non-volatile memory. Furthermore, memory (1330) can provide stored data upon the request of the processor (1320). Computer programs, code, or instructions that can be executed by the processor (1320) may be stored in memory (1330). According to one embodiment, a computer program, code, or instruction that can be executed by a processor (1320) may be stored in a single memory device or may be separated and distributed across two or more memory devices. The processor (1320) may perform various functions according to an embodiment of the present disclosure by executing instructions stored in memory (1330). According to one embodiment of the present disclosure, the operation of a terminal (1300) may be caused to be performed based on at least one processor (or processing circuit), a processing circuitry not configured to execute instructions, and / or a component of a processing circuitry not configured to execute instructions, configured to perform the features of the present disclosure individually, collectively, or in any combination based on the execution of instructions (or computer program or code) stored in memory (1330).

[0232] The processor (1320) can control a series of processes to enable the UE (1300) to operate according to the embodiments of the present disclosure described above. For example, the processor (1320) can receive control signals and data signals through the transceiver (1310) and process the received control signals and data signals. The processor (1320) can transmit the processed control signals and data signals through the transceiver (1310). Additionally, the processor (1320) can write or read data to or from memory (1330). The processor (1320) can perform the functions of a protocol stack required by a communication standard. To this end, the processor (1320) may include at least one processor or microprocessor. In one embodiment, a part of the transceiver (1310) or the processor (1320) may be referred to as a communication processor (CP).

[0233] The processor (1320) may be composed of one or more processors. In this case, the one or more processors may be general-purpose processors such as CPUs, APs, and DSPs (Digital Signal Processors), graphics-dedicated processors such as GPUs and VPUs (Vision Processing Units), or artificial intelligence-dedicated processors such as NPUs. For example, if one or more processors are artificial intelligence-dedicated processors, the artificial intelligence-dedicated processors may be designed with a hardware structure specialized for processing a specific artificial intelligence model. The processor (1320) may include at least one processor (or processing circuitry), and at least one processor may perform the following operations individually, collectively, or in any combination. For example, the processor (1320) may include a communication processor (CP) that controls communication operations and an application processor (AP) that controls the execution of an upper layer (e.g., an application layer). In a specific embodiment, at least one part of the processor (1320) may be included in one chip, and another part of the processor (1320) may be included in a separate chip. Alternatively, at least one processor may be included in other components, such as a transceiver (1310) or memory (1330). To this end, the processor (1320) may control other components of the terminal (1300) to perform various operations by executing computer programs, code, or instructions stored in memory (1330).

[0234] In one embodiment, by the processor (1320) executing instructions stored in memory (1330) alone or in combination, the UE (1300) can receive a synchronization signal block (SSB) from a base station (1200) that includes an indicator indicating whether to apply Tx power adaptation. By the processor (1320) executing instructions stored in memory (1330) alone or in combination, the UE (1300) can perform an initial connection to a base station (1200) that applies Tx power adaptation based on the SSB.

[0235] In one embodiment, the SSB may further include at least one of: information regarding the adaptation duration; information regarding the time from the current SSB to the next SSB to which the Tx power adaptation is not applied; index information related to the beam; or repetition information of the SSB transmitted with the same Tx power.

[0236] In one embodiment, by the processor (1320) executing instructions stored in memory (1330) alone or in combination, the UE (1300) can receive system information from the base station (1200) including sequence information of offsets for correcting a received signal controlled by Tx power adaptation. The sequence information may include offset values ​​corresponding to each SSB index. By the processor (1320) executing instructions stored in memory (1330) alone or in combination, the UE (1300) can select the cell with the best signal strength based on the system information.

[0237] In one embodiment, by the processor (1320) executing instructions stored in memory (1330) alone or in combination, the UE (1300) may receive a radio resource control (RRC) message from the base station (1200) containing information regarding an offset for correcting a received channel measurement controlled by Tx power adaptation. By the processor (1320) executing instructions stored in memory (1330) alone or in combination, the UE (1300) may report to the base station (1200) the result of correcting the channel measurement based on the information regarding the offset.

[0238] FIG. 14 is a block diagram of an OAM server (1400) according to one embodiment of the present disclosure. The OAM server 1400 may correspond to the OAM server 100 of the present disclosure.

[0239] Referring to FIG. 14, the OAM server (1400) may be composed of a transceiver (1410), a processor (1420), and a memory (1430). The transceiver (1410), processor (1420), and memory (1430) of the UE (1400) may operate according to the operation method of the OAM server (1400) described in FIG. 1 to FIG. 10 above. However, the components of the OAM server (1400) are not limited to the examples described above. For example, the OAM server (1400) may include more components or fewer components than the components described above. In one embodiment, the transceiver (1410), processor (1420), and memory (1430) may be implemented in the form of a single chip. Additionally, the processor (1420) may include one or more processors.

[0240] The transceiver (1410) is a collective term for the receiver of the OAM server (1400) and the transmitter of the OAM server (1400), and can transmit and receive signals with a network entity including a base station (1200). The signals transmitted and received with the network entity including the base station (1200) may include control information and data. To this end, the transceiver (1410) may be composed of an RF transmitter that up-converts and amplifies the frequency of a transmitted signal, and an RF receiver that low-noise amplifies a received signal and down-converts the frequency. However, this is one embodiment of the transceiver (1410), and the components of the transceiver (1410) are not limited to an RF transmitter and an RF receiver.

[0241] Additionally, the transceiver (1410) can perform functions for transmitting and receiving signals through a wireless channel. For example, the transceiver (1410) can receive a signal through a wireless channel and output it to a processor (1420), and transmit the signal output from the processor (1420) through a wireless channel.

[0242] Memory (1430) can store programs and data necessary for the operation of the OAM server (1400). Additionally, memory (1430) can store control information or data included in signals obtained from the OAM server (1400). Memory (1430) may be composed of a storage medium or a combination of storage media such as ROM, RAM, hard disk, CD-ROM, and DVD. Additionally, memory (1430) may not exist separately but may be configured to be included in the processor (1420). Memory (1430) may be composed of volatile memory, non-volatile memory, or a combination of volatile and non-volatile memory. Furthermore, memory (1430) can provide stored data upon the request of the processor (1420). Computer programs, code, or instructions that can be executed by the processor (1420) may be stored in memory (1430). According to one embodiment, a computer program, code, or instruction that can be executed by a processor (1420) may be stored in a single memory device or may be separated and distributed across two or more memory devices. By executing an instruction stored in memory (1430), the processor (1420) can perform various functions according to an embodiment of the present disclosure.According to one embodiment of the present disclosure, the operation of the OAM server (1400) may be caused to be performed based on at least one processor (or processing circuit) configured to perform the features of the present disclosure individually, collectively, or in any combination based on the execution of instructions (or computer programs or code) stored in memory (1430), based on processing circuitry not configured to execute instructions, and / or based on components of a processing circuitry not configured to execute instructions.

[0243] The processor (1420) can control a series of processes to enable the OAM server (1400) to operate according to the embodiments of the present disclosure described above. For example, the processor (1420) can receive control signals and data signals through the transceiver (1410) and process the received control signals and data signals. The processor (1420) can transmit the processed control signals and data signals through the transceiver (1410). Additionally, the processor (1420) can write or read data to or from memory (1430). The processor (1420) can perform the functions of a protocol stack required by a communication standard. To this end, the processor (1420) may include at least one processor or microprocessor. In one embodiment, a part of the transceiver (1410) or the processor (1420) may be referred to as a communication processor (CP).

[0244] The processor (1420) may be composed of one or more processors. In this case, the one or more processors may be general-purpose processors such as CPUs, APs, and DSPs (Digital Signal Processors), graphics-dedicated processors such as GPUs and VPUs (Vision Processing Units), or artificial intelligence-dedicated processors such as NPUs. For example, if one or more processors are artificial intelligence-dedicated processors, the artificial intelligence-dedicated processors may be designed with a hardware structure specialized for processing a specific artificial intelligence model. The processor (1420) may include at least one processor (or processing circuitry), and at least one processor may perform the following operations individually, collectively, or in any combination. For example, the processor (1420) may include a communication processor (CP) that controls communication operations and an application processor (AP) that controls the execution of an upper layer (e.g., an application layer). In a specific embodiment, at least one part of the processor (1420) may be included in one chip, and another part of the processor (1420) may be included in a separate chip. Alternatively, at least one processor may be included in other components, such as a transceiver (1410) or memory (1430). To this end, the processor (1420) may control other components of the OAM server (1400) to perform various operations by executing computer programs, code, or instructions stored in memory (1430).

[0245] The specific example for explaining the embodiment according to the present disclosure is merely one combination of each standard, method, detailed method, and operation, and through a combination of at least two of the various techniques described, the base station and the UE can ensure scheduling performance and improve resource efficiency in a wireless communication system supporting various channel environments. In addition, the operation may be performed according to a method determined through one or a combination of at least two of the aforementioned techniques. For example, it may be possible to perform a part of the operation of one embodiment in combination with a part of the operation of another embodiment.

[0246] A device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory storage medium' simply means that it is a tangible device and does not contain a signal (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily. For example, a 'non-transitory storage medium' may include a buffer in which data is stored temporarily.

[0247] According to one embodiment, the method according to the various embodiments disclosed herein may be provided by being included in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or distributed online (e.g., download or upload) through an application store or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product (e.g., downloadable app) may be temporarily stored or temporarily created on a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0248] Meanwhile, although specific embodiments have been described in the detailed description of the present disclosure, it is understood that various modifications are possible within the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the described embodiments, but should be defined by the claims set forth below as well as equivalents thereof.

Claims

1. In a method of a base station in a wireless communication system, A step of obtaining configuration information regarding Tx power adaptation; and A method comprising the step of performing Tx power adaptation based on setting information regarding the above Tx power adaptation.

2. In claim 1, the step of obtaining setting information regarding the Tx power adaptation is, A method comprising the step of generating configuration information regarding the Tx power adaptation using an AI / ML model installed in the base station.

3. In claim 1, the step of obtaining setting information regarding the Tx power adaptation is, A method comprising the step of receiving a message containing configuration information regarding the Tx power adaptation from an OAM (Operations and Maintenance) server.

4. In claim 1, the setting information regarding the Tx power adaptation is, A method comprising at least one of information regarding a Tx power pattern, information regarding an Adaptation duration, or information regarding an SSB (synchronization signal block) transmission period.

5. In Paragraph 1, A step of determining whether the entering condition of Tx power adaptation is satisfied; If the above entry conditions are satisfied, a step of transmitting a report message containing configuration information regarding the Tx power adaptation to one or more adjacent base stations; The step of receiving an acceptance message or a rejection message from one or more adjacent base stations; and A method further comprising the step of determining whether to perform Tx power adaptation based on the above approval message or rejection message.

6. In Paragraph 1, A step of determining whether the leaving condition of Tx power adaptation is satisfied; and A method further comprising the step of stopping the execution of Tx power adaptation and changing to the default Tx power setting when the above-mentioned departure condition is satisfied.

7. In Paragraph 1, The method further includes the step of transmitting an SSB to a terminal that includes an indicator indicating whether to apply Tx power adaptation, and A method wherein the above SSB further comprises at least one of: information regarding the adaptation duration; information regarding the time from the current SSB to the next SSB to which Tx power adaptation is not applied; index information related to the beam; or repetition information of the SSB transmitted with the same Tx power.

8. In Paragraph 1, The method further includes the step of transmitting system information to a terminal, the system information including sequence information of an offset for correcting a received signal controlled by Tx power adaptation, and A method in which the above sequence information includes offset values ​​corresponding to each SSB index.

9. In Paragraph 1, A step of transmitting an RRC (radio resource control) message to a terminal containing information related to an offset for correcting a receiving channel measurement controlled by Tx power adaptation; and A method further comprising the step of receiving from the above terminal a result of correcting channel measurements based on information related to the offset.

10. In a method of a terminal in a wireless communication system, A step of receiving an SSB (synchronization signal block) from a base station that includes an indicator indicating whether to apply Tx power adaptation; and A method comprising the step of performing an initial connection to a base station applying the Tx power adaptation based on the above SSB.

11. In Paragraph 10, A step of receiving system information from the base station, including sequence information of an offset for correcting a received signal controlled by Tx power adaptation; Here, the sequence information includes offset values ​​corresponding to each SSB index, and A method further comprising the step of selecting the cell with the best signal strength based on the above system information.

12. In Paragraph 10, A step of receiving an RRC (radio resource control) message from the base station containing information related to an offset for correcting a received channel measurement controlled by Tx power adaptation; and A method further comprising the step of reporting to the base station the result of correcting the channel measurement based on the information related to the offset above.

13. In a base station of a wireless communication system, One or more transceivers; One or more processors coupled to communicate with the above one or more transceivers; and One or more memories coupled to communicate with the above one or more processors; including, The above one or more memories store instructions that the above one or more processors can execute alone or in combination, and the instructions are configured so that the base station performs the following: Obtain configuration information regarding Tx power adaptation, and A base station that performs Tx power adaptation based on the above-mentioned configuration information regarding Tx power adaptation.

14. In claim 13, the at least one processor executes the one or more instructions: Determine whether the entering condition of Tx power adaptation is satisfied, and If the above entry conditions are satisfied, a report message containing configuration information regarding the Tx power adaptation is transmitted to one or more adjacent base stations, and Receive an acceptance message or a rejection message from one or more adjacent base stations, and A base station that determines whether to perform Tx power adaptation based on the above approval message or rejection message.

15. In a terminal of a wireless communication system, One or more transceivers; One or more processors coupled to communicate with the above one or more transceivers; and One or more memories coupled to communicate with the above one or more processors; including, The above one or more memories store instructions that the above one or more processors can execute alone or in combination, and the instructions are configured so that the terminal performs the following: Receive an SSB (synchronization signal block) from a base station that includes an indicator indicating whether to apply Tx power adaptation, and A terminal that performs an initial connection to a base station applying the Tx power adaptation based on the above SSB.

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