CN117837189A - Terminal, wireless communication method and base station - Google Patents

Abstract

The terminal according to one aspect of the present disclosure includes: a receiving unit that receives beam setting information including information of an angle or a phase of a beam applied to a reference signal; and a control unit that estimates measurement results of other reference signals based on the measurement results of the reference signals and the beam setting information. According to an aspect of the present disclosure, proper channel estimation/utilization of resources can be achieved.

Description

Terminal, wireless communication method and base station

Technical Field

The present disclosure relates to a terminal, a wireless communication method, and a base station in a next generation mobile communication system.

Background

In a universal mobile telecommunications system (Universal Mobile Telecommunications System (UMTS)) network, long term evolution (Long Term Evolution (LTE)) has been standardized for the purpose of further high-speed data rates, low latency, and the like (non-patent document 1). Further, for the purpose of further large capacity, high altitude, and the like of LTE (third generation partnership project (Third Generation Partnership Project (3 GPP)) Release (rel.) 8, 9), LTE-Advanced (3 GPP rel.10-14) has been standardized.

Subsequent systems of LTE (e.g., also referred to as fifth generation mobile communication system (5 th generation mobile communication system (5G)), 5g+ (plus), sixth generation mobile communication system (6 th generation mobile communication system (6G)), new Radio (NR)), 3gpp rel.15 later, and so on) are also being discussed.

Prior art literature

Non-patent literature

Non-patent document 1:3GPP TS 36.300V8.12.0"Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); overall description; stage 2 (Release 8) ", 4 th 2010

Disclosure of Invention

Problems to be solved by the invention

Regarding future wireless communication technologies, artificial intelligence (Artificial Intelligence (AI)) technologies such as Machine Learning (ML)) are being discussed, which flexibly apply to control, management, etc. of networks/devices. For example, AI-assisted beam management using AI-assisted estimation (AI-assisted estimation) is being discussed.

However, the specific content of AI-assisted beam management has not been discussed. If these are not properly defined, high-precision channel estimation and efficient resource utilization cannot be achieved, and there is a concern that improvement in communication throughput or communication quality is suppressed.

Accordingly, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station capable of realizing appropriate channel estimation and resource utilization.

Means for solving the problems

The terminal according to one aspect of the present disclosure includes: a receiving unit that receives beam setting information including information of an angle or a phase of a beam applied to a reference signal; and a control unit that estimates measurement results of other reference signals based on the measurement results of the reference signals and the beam setting information.

Effects of the invention

According to an aspect of the present disclosure, proper channel estimation/utilization of resources can be achieved.

Drawings

Fig. 1 is a diagram showing an example of step S1 for beam reporting based on AI-assisted beam estimation.

Fig. 2 is a diagram showing an example of step S2 for beam reporting based on AI-assisted beam estimation.

Fig. 3 is a diagram showing an example of step S3 for beam reporting based on AI-assisted beam estimation.

Fig. 4 is a diagram showing an example of angle/phase information according to the second embodiment.

Fig. 5 is a diagram showing an example of width information according to the second embodiment.

Fig. 6A and 6B are diagrams showing an example of quantized width information.

Fig. 7A to 7E are diagrams showing an example of quantized phase information.

Fig. 8 is a diagram showing an example of a MAC CE used for beam setting information.

Fig. 9 is a diagram showing an example of a report on a preferred RS.

Fig. 10A and 10B are diagrams showing an example of a MAC CE for reporting a preferred RS.

Fig. 11 is a diagram showing an example of step S101.

Fig. 12 is a diagram showing an example of AI-model-related information in the fourth embodiment.

Fig. 13 is a diagram showing an example of a report of the model inference result in the fourth embodiment.

Fig. 14 is a diagram showing an example of a schematic configuration of a radio communication system according to an embodiment.

Fig. 15 is a diagram showing an example of a configuration of a base station according to an embodiment.

Fig. 16 is a diagram showing an example of a configuration of a user terminal according to an embodiment.

Fig. 17 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to an embodiment.

Detailed Description

Application of artificial intelligence (Artificial Intelligence (AI)) technology to wireless communication

With respect to future wireless communication technologies, flexible application of AI technology for control, management, etc. of networks/devices is being discussed.

For example, in future wireless communication technologies, particularly in communication using beams, it is desired to improve the accuracy of channel estimation (which may also be referred to as channel measurement) for beam management, decoding of received signals, and the like.

The channel estimation may be performed using at least one of a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a synchronization signal (Synchronization Signal (SS)), a synchronization signal/broadcast channel (Synchronization Signal/Physical Broadcast Channel (SS/PBCH)) block, a demodulation reference signal (DeModulation Reference Signal (DMRS)), a measurement reference signal (sounding reference signal (Sounding Reference Signal (SRS)), and the like, for example.

In the conventional wireless communication technology, a large amount of estimation resources (for example, resources for transmitting reference signals) are required for performing channel estimation with high accuracy, and channel estimation for all antenna ports to be used is required. If resources of DMRS, CSI-RS, etc. are increased for the realization of high-precision channel estimation, resources for data transmission and reception, for example, downlink shared channel (physical downlink shared channel (Physical Downlink Shared Channel (PDSCH))) resources, uplink shared channel (physical uplink shared channel (Physical Uplink Shared Channel (PUSCH)) resources, are reduced.

In addition, in the wireless communication technology up to now, control based on the existing or past measurement results is possible, but in the case of link disconnection or the like due to degradation of wireless quality, its handling becomes slow.

In the future, AI technology such as Machine Learning (ML) is being discussed for high-precision channel estimation with fewer resources and prediction of future measurements. Such channel estimation may also be referred to as AI-assisted estimation (AI-assisted estimation). Beam management using AI-assisted estimation may also be referred to as AI-assisted beam management.

As an example of AI-assisted beam management, when AI is used in a terminal (which may also be referred to as a User terminal, user Equipment (UE)), or the like), AI may predict future beam measurements, or may estimate (derive) a large number of beam measurements based on a small number of beams. In addition, the UE may also trigger a predicted enhanced beam failure recovery (enhanced beam failure recovery (enhanced BFR)).

As an example of AI-assisted beam management, when AI is used in a Base Station (BS), AI may predict future beam measurement values (for example, measurement values of beamlets) or estimate (derive) measurement values of beamlets based on a small amount of beam management. In addition, the UE may also receive a beam indication with a time offset.

However, the specific content regarding AI-assisted beam management has not been discussed. If these are not properly defined, high-precision channel estimation and efficient resource utilization cannot be achieved, and there is a concern that improvement in communication throughput and communication quality is suppressed.

Accordingly, the inventors of the present invention have conceived appropriate beam reporting for AI-assisted beam management. In addition, embodiments of the present disclosure may also be applied to cases where AI/prediction is not utilized.

In an embodiment of the present disclosure, the UE/BS learns the ML model in a training mode (training mode), and implements the ML model in a test mode (which may also be referred to as test mode, testing mode, etc.). In the test mode, verification (validation) of accuracy of the ML model (trained ML model) after training in the training mode may be performed.

In the present disclosure, the UE/BS inputs channel state information, reference signal measurement values, etc., for the ML model, outputs high-precision channel state information/measurement values/beam selection/location, future channel state information/radio link quality, etc.

In addition, in the present disclosure, AI may also be rewritten as an object (may also be referred to as an object, data, a function, a program, or the like) having (implementing) at least one of the following features:

An estimate based on the observed or collected information;

selection based on observed or collected information;

prediction based on observed or collected information.

In the present disclosure, the object may be, for example, a terminal, a base station, or other device, equipment, or the like. The object may correspond to a program included in the apparatus.

Further, in the present disclosure, the ML model may also be rewritten as an object having (implementing) at least one of the following features:

generating an estimated value by providing (feeding) information;

predicting an estimate by providing information;

by providing information, discovering features;

by providing information, select operation.

In addition, in the present disclosure, the ML model may also be rewritten as at least one of an AI model, a predictive analysis (predictive analytics), a predictive analysis model, and the like. In addition, the ML model may also be derived using at least one of regression analysis (e.g., linear regression analysis, multi-distance regression analysis, logistic regression analysis), support vector machine, random Forest (Random Forest), neural network, deep learning, etc. In the present disclosure, the model may also be rewritten as at least one of an encoder, a decoder, a tool, and the like.

The ML model outputs information of at least one of an estimated value, a predicted value, a selected operation, a classification, and the like based on the input information.

The ML model may include supervised learning (supervised learning), unsupervised learning (unsupervised learning), reinforcement learning (Reinforcement learning), and the like. Supervised learning may also be utilized for learning general rules that map inputs to outputs. Unsupervised learning may also be utilized for learning features of the data. Reinforcement learning may also be utilized for learning operations for maximizing the purpose.

The embodiments described below will mainly be described assuming that the ML model is learned by supervised learning, but the embodiments are not limited to this.

In this disclosure, implementations, operations, executions, etc. may also be rewritten with each other. In addition, in the present disclosure, test, after training (after-training), actual use, and the like may be rewritten with each other. Signals may also be rewritten with signals/channels.

In the present disclosure, the training mode may also correspond to a mode in which the UE/BS transmits/receives signals for the ML model (in other words, an operation mode during training). In the present disclosure, the test mode may also correspond to a mode in which the UE/BS implements the ML model (e.g., implements the trained ML model to predict the output) (in other words, an operation mode during the test).

In the present disclosure, the training mode may also mean a mode in which a specific signal transmitted through the test mode is transmitted with a large overhead (for example, a large amount of resources).

In the present disclosure, the training mode may also mean a mode with reference to a first setting (e.g., a first DMRS setting, a first CSI-RS setting). In the present disclosure, the test mode may also mean a mode in which a second setting (e.g., a second DMRS setting, a second CSI-RS setting) different from the first setting is referred to. The first setting is set to be larger in at least one of time resource, frequency resource, code resource, and port (antenna port) related to measurement than the second setting.

Embodiments according to the present disclosure will be described in detail below with reference to the accompanying drawings. The radio communication methods according to the embodiments may be applied individually or in combination.

In the following embodiments, for explaining the ML model related to communication between the UE-BS, the subjects of association are the UE and the BS, but the application of the embodiments of the present disclosure is not limited thereto. For example, for other inter-body communications (e.g., UE-UE communications), the UEs and BSs of the following embodiments may be rewritten to the first UE and the second UE. In other words, the UE, BS, etc. of the present disclosure may be rewritten as arbitrary UE/BS.

In the present disclosure, "a/B", "at least one of a and B" may also be rewritten with each other.

In the present disclosure, activation, deactivation, indication (or designation), selection, setting (configuration), update (update), decision (determination), and the like may also be rewritten to each other. In the present disclosure, support, control, enable control, operate, enable operation, and these may also be rewritten with each other.

In the present disclosure, radio resource control (Radio Resource Control (RRC)), RRC parameters, RRC messages, higher layer parameters, information Elements (IEs), settings, which may also be rewritten to each other. In the present disclosure, a media access Control Element (MAC (Medium Access Control) Control Element (CE)), an update command, an activate/deactivate command, which may also be rewritten to each other.

In the present disclosure, a panel, a UE panel, a panel group, a beam group, a precoder, an Uplink (UL)) transmitting entity, TRP, spatial Relationship Information (SRI), spatial relationship, SRS resource indicator (SRS Resource Indicator (SRI)), SRS resource, control resource set (COntrol Resource SET (CORESET)), physical downlink shared channel (Physical Downlink Shared Channel (PDSCH)), codeword, base station, reference Signal (RS), a specific antenna port (e.g., demodulation reference signal (DeModulation Reference Signal (DMRS)) port), a specific antenna port group (e.g., DMRS port group), a specific group (e.g., code division multiplexing (Code Division Multiplexing (CDM)) group, a specific reference signal group, CORESET group), a specific resource (e.g., a specific reference signal resource set), CORESET, PUCCH group (PUCCH resource set), spatial relationship group, downlink transmission setting indication state (TCI state) (DL TCI state), uplink TCI state (TCI state), TCI state (TCI unified TCI state), tcstate (qcif), and the like can be rewritten to each other as well as a standard.

In the present disclosure, the index, the ID, the indicator, and the resource ID may also be rewritten with each other. In this disclosure, sequences, lists, sets, groups, clusters, subsets, etc. may also be rewritten with each other.

In the present disclosure, beam reporting may also be rewritten with beam measurement reporting, CSI measurement reporting, predicted beam reporting, predicted CSI reporting, etc.

In the present disclosure, the CSI-RS may also be rewritten with at least one of a Non Zero Power (NZP) CSI-RS, a Zero Power (ZP) CSI-RS, and a CSI interference measurement (CSI Interference Measurement (CSI-IM)).

In the present disclosure, the RS being measured/reported may also mean the RS being measured/reported for beam reporting.

In addition, in the present disclosure, timing, time, slot, sub-slot, symbol, sub-frame, etc. may also be rewritten with each other.

In addition, in the present disclosure, directions, axes, dimensions, polarizations, polarization components, and the like may also be rewritten with each other.

In addition, in the present disclosure, estimation (estimation), prediction (prediction), and inference (reference) may be rewritten to each other. In the present disclosure, these may be rewritten with each other, for example, estimation (estimate), prediction (predict), and inference (refer).

In addition, in the present disclosure, the RS may be, for example, CSI-RS, SS/PBCH block (SS block (SSB)), or the like. The RS index may be a CSI-RS resource indicator (CSI-RS Resource Indicator (CRI)), an SS/PBCH block resource indicator (SS/PBCH Block Indicator (SSBRI)), or the like.

(Wireless communication method)

< first embodiment >

The first embodiment relates to beam reporting based on AI-assisted beam estimation. Hereinafter, the enhanced beam report and the beam report may be rewritten to each other.

The beam reporting based on AI-assisted beam estimation may also be implemented as follows steps S1 to S3.

Fig. 1 is a diagram showing an example of step S1 for beam reporting based on AI-assisted beam estimation. In step S1, the BS sets a beam for beam measurement of partiality/roughness (Rough) to the UE. The BS may notify the UE of beam setting information (to be described in the second embodiment) as needed. These settings/notifications may be set to the UE using physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), higher layer signaling (e.g., RRC signaling, MAC CE), specific signals/channels, or a combination thereof.

In the example of fig. 1, the BS sets three beams (corresponding RSs) indicated by hatching as partial beams to the UE. The BS may also notify the UE of the horizontal angle, vertical angle, and width of these beams (corresponding to the beam indexes #1, #2, and … …) as beam setting information.

Fig. 2 is a diagram showing an example of step S2 for beam reporting based on AI-assisted beam estimation. In step S2, the UE with AI estimates the measurement result (quality) of the complete/other/fine beam based on the measurement result of the partial/coarse beam of step S1. For the input of the ML model for these estimations, measurement results of the partial/coarse beams, location information/velocity information of the UE, etc. may be utilized. In addition, in the case where the estimation of the beam quality can be performed based on the position information, the velocity information, or the like of the UE, the UE may not perform measurement of the partial/coarse beam.

In addition, the UE may also decide the beam to report based on the measurement results (quality) of the full/other/fine beam. The beam to be reported may be the best of these beams or the best N (N is an integer) beams.

In addition, if the beam to be reported (for example, information indicating the best beam (beam index, etc.) according to the output of the AI model) can be decided, it is not necessary to estimate the measurement results of the complete (in other words, all of the beams set for beam reporting).

Fig. 3 is a diagram showing an example of step S3 for beam reporting based on AI-assisted beam estimation. In step S3, the UE transmits information about the decided beam to report to the BS. In this example, as the optimal beam, a beam different from the partial/coarse beam shown in fig. 1 is determined, and information about these beams is reported.

According to the first embodiment described above, the beam report based on the AI-assisted beam estimation can be appropriately reported.

< second embodiment >

The second embodiment relates to the beam setting information slightly related to the first embodiment.

In the second embodiment, the UE may also receive beam setting information from the BS. The beam setting information may be rewritten with beam association information, information for beam measurement, or the like.

In the conventional rel.15/16NR specification, the BS can freely change the beam of an arbitrary RS, and the UE cannot understand which beam is applied to the RS. On the other hand, in the second embodiment, the UE may also assume that a specific beam following the beam setting information is applied to the RS to which the information is set.

[ information of angle/phase ]

The beam setting information may include information of an angle/phase (hereinafter, also simply referred to as angle/phase information) of the RS for a certain direction (or axis). The angle/phase information may also represent the angle/phase of the aligned beams in a certain direction (or axis). For example, the angle/phase information may also indicate an angle/phase at which beams of BSs applied in transmission of a specific RS or a specific RS group are arranged.

In addition, the angle may be expressed by degrees (degrees), radians (radians), or the like. In addition, in the present disclosure, the RS may also be rewritten with the (formed) beam to which the RS is directed when transmitting.

The RS (RS to be applied) corresponding to the certain angle/phase information may be determined based on a specific rule, may be set to the UE by using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal/channel, or a combination thereof, or may be determined based on UE capability. For example, the angle/phase information may include information (e.g., CSI-RS resource ID, SSB index, etc.) of the RS to be applied.

The angle/phase information may also contain at least one of the following:

information about absolute angle/phase of RS;

information about the relative angle/phase of the RS (e.g., information about the angle/phase of the difference from a particular RS);

information on the angular interval and phase interval between RSs (information on the angular/phase shift may be attached);

information about the number of RSs in a certain direction/axis.

Fig. 4 is a diagram showing an example of angle/phase information according to the second embodiment. In the present disclosure, the direction/axis may also correspond to at least one of a horizontal axis (horizontal axes), a vertical axis (vertical axes), an azimuth direction, an elevation/depression direction, and the like.

RS #1 to #6 shown in the figure correspond to a specific horizontal angle/phase and a specific vertical angle/phase, respectively. The angle/phase information may be set collectively in RS groups. For example, the RS group may be composed of groups of rs#1 and #4 corresponding to the same horizontal angle/phase, or may be composed of groups of rs#1 to #3 corresponding to the same vertical angle/phase.

In addition, for example, the horizontal angle/phase information of rs#2 may also be notified as a differential value from the horizontal angle/phase of rs#1. Further, for example, the vertical angle/phase information of rs#6 may also be notified as a differential value from the vertical angle/phase of rs#3.

The angle/phase information of each RS may be derived based on the horizontal angle interval/phase interval and the vertical angle interval/phase interval between the RSs shown in the drawing and information on the number of RSs on each axis with one RS as a reference.

[ information on width ]

The beam setting information may include information on the width of a beam in a certain direction (or axis) (hereinafter, also simply referred to as width information). The width information may also indicate the width of a beam of the BS applied in transmission of a specific RS or a specific RS group.

The RS (RS to be applied) corresponding to certain width information may be determined based on a specific rule, may be set to the UE by physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal/channel, or a combination thereof, or may be determined based on UE capability. For example, the angle/phase information may include information (e.g., CSI-RS resource ID, SSB index, etc.) of the RS to be applied.

The width information may also include at least one of:

information of the width of the main lobe beam;

information about the total power within the main lobe beam (e.g., the ratio of the inner to outer total radiated power (Total Radiated Power (TRP)) of the main lobe);

information about the type of beam (e.g., discrete fourier transform (Discrete Fourier Transform (DFT)) beam);

information about the number of antenna elements forming the beam.

Fig. 5 is a diagram showing an example of bandwidth information according to the second embodiment. Fig. 5 shows an example of a radiation pattern (the horizontal axis represents the angle θ and the vertical axis represents the gain G (θ)) in which the direction of the maximum gain of the main lobe is 90 °. The length of the portion of the arrow shown may also correspond to the width of the main lobe beam. The width of the main lobe beam may be represented by an angle or a phase between points where the gain of the main lobe beam is equal to or less than a threshold value (0 in the figure), or by an angle or a phase between points 3dB smaller than the maximum gain (may be referred to as a 3dB beam width).

[ other information ]

The beam setting information may also contain information of the antenna interval (of the BS).

The information of the antenna interval may also include at least one of:

information on the distance between antennas used for transmission of the specific RS;

information about the antenna panel used for transmission of the specific RS (for example, information about the number, position, etc. of the antenna panel);

information on the distance between antenna panels used for transmission of the specific RS;

information on a distance between an antenna used for transmission of the first RS and an antenna used for transmission of the second RS;

information on the distance between the antenna panel used for transmission of the first RS and the antenna panel used for transmission of the second RS.

The beam setting information may also contain information of the radiation pattern. The radiation pattern may also be adapted to the beam characteristics, directivity, etc.

The information of the radiation pattern may be, for example, information indicating the antenna gain of the peak in the main lobe beam, or information indicating the correspondence between the angle/radian and the gain shown in fig. 5.

The location information of the BS, the location information and the speed information of the UE, the surrounding obstacle information of the BS, the obstacle information of the beam path between the UE and the BS, and the like may be notified to the UE so as to be included in the beam setting information or be separate from the beam setting information. At least one of these information may also be used as input to the ML model.

The location information of the UE may also contain information (e.g., location/position)/orientation of an antenna, location/orientation of an antenna panel, the number of antennas, the number of antenna panels, etc.) related to the actual installation of the UE itself.

The speed information of the UE may also include information indicating a mobility type, position information of the UE, and information indicating at least one of a movement speed of the UE, an acceleration of the UE, a movement direction of the UE, and the like.

Here, the mobility type may also correspond to at least one of a fixed location UE (fixed location UE), a mobile/moving UE (mobile/moving UE), no mobility UE (no mobility UE), low mobility UE (low mobility UE), medium mobility UE (middle mobility UE), high mobility UE (high mobility UE), a cell-edge UE (cell-edge UE), a non-cell-edge UE (non-cell-edge UE), and the like.

The UE may determine the position information and the velocity information based on at least one of the measurement result of the RS and the acquisition result of the position information, the moving velocity, and the acceleration.

In the present disclosure, the position information/velocity information may be acquired by the UE/BS based on a satellite positioning system (e.g., global navigation satellite system (Global Navigation Satellite System (GNSS)), global positioning system (Global Positioning System (GSP)), or the like), or may be acquired/corrected based on inter-UE communication/inter-UE-BS communication (e.g., may also be determined based on a doppler shift (or QCL-related parameter) of a reference signal transmitted from the BS, or the like).

[ quantization of Beam setting information ]

The beam setting information may be quantized information. The beam setting information may be information (for example, phase information and width information) included in the beam setting information.

Fig. 6A and 6B are diagrams showing an example of quantized width information.

The UE receives, as quantized width information, a bit field indicating one piece of width information selected from among candidates of the set width information. In fig. 6A, the UE envisages 4 pieces of width information (pi/2, pi/4, pi/6, and pi/8) corresponding to each bit field being set with RRC parameters.

The UE may receive, as the quantized width information, a bit field indicating one piece of width information selected from candidates of width information specified in advance. In fig. 6B, for example, 4 pieces of width information (pi/2, pi/4, pi/6, and pi/8) corresponding to each bit field may be specified in advance in the specification.

The beam setting information may be a bit string representing an absolute value/differential value, or may be an index associated with the absolute value/differential value.

The UE may report the value of the beam setting information for a certain RS included in the beam setting information based on a difference value from the value of the beam setting information for the first RS. Here, the first RS may be an RS corresponding to the first entry (or field) included in the beam setting information, may be an RS having the smallest or largest index (for example, a resource index, a setting index, or the like) corresponding to the RS reported by the beam setting information, or may be an RS corresponding to the value of the smallest or largest beam setting information reported by the beam setting information.

The value of the beam setting information may have different bit widths (sizes) in the case of being reported based on an absolute value and in the case of being reported based on a differential value.

The beam setting information may be reported according to different granularity (may also be referred to as a minimum unit of reporting, step size, etc.) per RS. The granularity of the beam setting information may be determined based on a specific rule, may be determined using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal/channel, or a combination thereof, or may be determined based on UE capabilities.

The beam setting information can be represented by a bit string in which each signal point (constellation point) is sequentially associated with a binary number. For example, in the case where the phase information is represented by X bits, the decimal number N may be assigned to n×2pi/2 ^X 。

In addition, the phase information may be represented by a gray code (gray code) to minimize a Hamming distance (Hamming distance) between adjacent signal points. In the case of using the gray code, the influence of errors in the case of bit errors can be appropriately suppressed.

Fig. 7A to 7E are diagrams showing an example of quantized phase information. Fig. 7A shows the phase of each signal point (phase=n×2pi/2 ^X X=2) is associated with an example of a 2-bit binary number. Fig. 7B shows an example of gray-coded data shown in fig. 7A.

Fig. 7C shows the phase of each signal point (phase=n×2pi/2 ^X X=3) is associated with an example of a 3-bit binary number. Fig. 7D shows an example of gray-coded data shown in fig. 7C.

When the phase information represented by the left table of fig. 7E is reported using the bit map of fig. 7D, the bit represented by the right table of fig. 7E may be used. The phase information in fig. 7E indicates the difference in phase with rs#3 as a reference. In the present disclosure, "N/a" may be rewritten with "Not Applicable", "Not Available", and "invalid" as well.

[ method of notifying Beam setting information ]

The beam setting information may be notified via a system information block (System Information Block (SIB 1)), or may be notified via RRC signaling, or may be notified via a MAC CE, for example.

Fig. 8 is a diagram showing an example of a MAC CE used for beam setting information. The MAC CE may include a field indicating an angle in the vertical direction and a field indicating an angle in the horizontal direction for each RS (rs#1 to #n).

According to the second embodiment described above, the UE can appropriately determine the beam of the BS applied to the RS.

< third embodiment >

The third embodiment relates to reporting (preferred RS reporting (preferable RS report)) related to preferred RS for partial beam measurement. The preferred RS may be rewritten with an appropriate RS (preferered RS), a desired RS, an RS that is desired to transmit/receive/monitor (measure), or the like.

In the third embodiment, the UE decides an RS suitable for monitoring (measurement). The UE may be determined based on a specific rule for the suitable RS, may use physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal/channel, or a combination thereof, or may be determined based on UE capabilities. Suitable RSs may be more than one RS. The appropriate RS may be determined based on past/current measurement results, feedback information from the BS, and the like, for example.

The UE may include information of the preferred RS index in a report on the preferred RS, or may include information on the number of the preferred RSs.

Fig. 9 is a diagram showing an example of a report on a preferred RS. The UE determines 3 beams (corresponding RSs) indicated by hatching among the 7 beams (RSs) to be set as preferred RSs, and reports information (for example, RS index) of these to the BS.

In addition, the UE may determine that an RS satisfying at least one of the following conditions is a preferable RS:

have low bias correlation (partial correlation)/partial correlation (part correlation or semipartial correlation)/spatial correlation with other RSs;

received with a UE panel different from the UE panel used for reception of other RSs;

capable of being received/received simultaneously with other RSs; and

received with a UE beam different from the UE beam used for reception of other RSs.

The report on the preferred RS may also contain information on the RS satisfying at least one of the above conditions and the other RSs.

The other RS may be an RS that achieves the maximum Layer 1-reference signal received power (Layer 1 (L1) -Reference Signal Received Power (RSRP)) (reference signal received power in Layer 1)/L1-signal-to-interference-and-noise ratio (L1-Signal to Interference plus Noise Ratio (SINR)).

The partial correlation/spatial correlation may be determined by 2 values of correlation (or correlation) or uncorrelation (uncorrelated), may be determined by a correlation coefficient (or correlation), may be determined by information related to QCL/TCI state/spatial relationship, may be determined by information indicating the influence of attenuation, may be determined by information indicating the variance value (or standard deviation) of the Angle of Arrival (AOA)) or information indicating the inverse of the variance value/standard deviation, or may be determined by using a plurality of these pieces of information.

The UE may transmit a report related to the preferred RS using uplink control information (Uplink Control Information (UCI)) or may transmit using MAC CE in PUSCH. The UE may determine that the size of the MAC CE is fixed (predetermined), or may determine based on at least one of:

the number of preferred RSs that can be reported, which are set by RRC;

the maximum set number of RSs for beam reporting based on AI-assisted beam estimation;

the set number of RSs for the beam report;

the type/kind of CSI association for that beam report (e.g., which CSI association); and

the field of the MAC CE.

The fields of the MAC CE described above may correspond to at least one of:

a field indicating the number of RSs reported; and

a field indicating whether a certain octet (e.g., the next octet to the octet containing the field) is present in the MAC CE.

Fig. 10A and 10B are diagrams showing an example of a MAC CE for reporting a preferred RS. The MAC CE includes an RS ID (RS ID to monitor) field for monitoring corresponding to the preferred RS.

Fig. 10A includes an RS number ("# of RS (RS #)") field. This field may also represent the number of octets (=rs ID field number) contained in the MAC CE.

Fig. 10B does not include the RS number field, but includes the AC field. The field may indicate whether there is a next octet containing the octet of the field. The AC field, for example, if "1" indicates that there is a next octet, and if "0" indicates that there is no next octet.

According to the third embodiment described above, the UE can properly report the preferred RS for the partial beam measurement.

< fourth embodiment >

The fourth embodiment relates to supported, AI-model forwarding (transfer) suitable for Beam Management (BM) optimization. In addition, in the present disclosure, forwarding may also be rewritten with notification, reporting, setting, communication, delivery, etc.

The present inventors considered that an AI model exhibiting excellent performance in BM is environment-specific/BS-specific, and focused on that it is difficult for a UE to maintain a plurality of AI models adaptable to different environment characteristics/beam model structures, thereby completing the fourth embodiment.

According to the fourth embodiment, the BS can provide the UE with a customized AI model in cooperation with coverage areas, beam pattern structures, and the like. In addition, the UE can help the BS train/fine tune/update AI models.

In the fourth embodiment, the communication of the AI model and the update of the AI model may be performed by steps S101 to S106 described below.

Step S101

In step S101, in case the UE performs initial access/handover to a new cell, the BS may transmit a message (e.g., RRC message) asking the UE for capability indicating an inference of whether the AI model is supported.

The UE may also report the above capabilities at initial access/handover or thereafter.

The UE may also send information about the type/type of ML model supported (e.g., linear regression, neural network, etc.) as the capability described above.

In addition, the UE may report the capability only when the BS requests the report of the capability, or may report the capability even without the request from the BS.

Fig. 11 is a diagram showing an example of step S101. In this example, the UE enters the illustrated cell, and performs initial access/handover to the cell (BS). The BS transmits information asking the UE whether the capability of the inference of the AI model is supported. The UE transmits capability information about these.

Step S102

When reported that the UE capability of step S101 is indicative of the inference supporting the AI model, the BS selects an appropriate AI model and forwards information associated with the selected AI model (hereinafter, referred to as AI model association information, also simply referred to as association information, etc.) to the UE in step S102.

Fig. 12 is a diagram showing an example of AI-model-related information in the fourth embodiment. The association information may contain at least one of information of a model ID, a model function, input/output of a model, an application range, and the like.

As shown in fig. 12, the model ID may contain an integer, a character string, or the like. The model function may include, for example, an explanation of the function of the AI model such as "estimate best CSI-RS". The model inputs may be RSRP of SSBs #1 to #n. The output of the model may also be the best CSI-RS index (CSI-RS resource ID). The application range may indicate, for example, a case where cells corresponding to the AI-assisted technology (cells that can be the target of beam reporting based on AI-assisted beam estimation, and cells that can use AI-based prediction/estimation) are cells #1 to # 3. The application scope may also be represented by a physical cell ID, a serving cell index, etc.

As shown in fig. 12, the AI-model association information may include a model ID, other association information (e.g., input/output of a model, etc.), or may include only a model ID.

The UE may determine other association information based on the notified model ID based on a specific rule. That is, the model ID maps to other associated information.

Step S103

The UE may also decide in step S103 to apply an ML model (utilized for BM optimization) based on the association information forwarded in step S102.

In step S103, the UE may also decide an ML model for at least one of:

prediction for predicting beam failure recovery (beam failure recovery (BFR));

prediction for future predicted beam reports; and

beam reporting based on AI-assisted beam estimation.

In addition, the predicted BFR may also correspond to: the radio link quality predicted based on current/past beam measurements (e.g., L1-RSRP measurements) is calculated to predict future beam failures and based thereon the triggered preventive (prior) BFRs.

The predicted beam report may correspond to a predicted beam report including a predicted radio link quality, which is a predicted time after a time offset (time offset) from a certain timing.

The UE may also determine input, output, etc. to the applied ML model based on the association information, and input values/information to the ML model, and derive output.

For example, the UE may put measurements of more than one beam into the AI model and estimate the quality of other beams (beams other than the one beam). The input to the ML model may also be any one or a combination of the following:

RSRP, SINR, aoA, etc.;

location information/speed information of the UE; and

the beam setting information described above.

The location information and the velocity information of the UE may be calculated (acquired) by the UE or may be received from the BS.

The output from the ML model may also be any one or a combination of the following:

information of the best beam (RS up to maximum beam/quality); and

information of estimated values of the quality (e.g., RSRP/SINR) of other beams.

Step S104

In step S104, the UE may report the output (e.g., estimation result, information of RS) obtained in step S103 or the result of model inference to the BS.

The report of step S104 may be reported together with the model ID. The report of step S104 may include only the model ID.

Fig. 13 is a diagram showing an example of a report of the model inference result in the fourth embodiment. As a result of the model inference, for example, "the best beam among all candidates" or the like may be reported. In other words, the result of the model inference may indicate which (e.g., which RS) the reported information corresponds to, or may include the reported information (RS index, etc.).

The BS may optimize (e.g., adjust, update, etc.) the beam selection/indication of the UE based on the report of step S104. The report of step S104 may also represent an AI model different from the model specified by the AI model association information of step S102 (which is assumed to be more preferable for the report).

Step S105

In step S105, the UE may perform training/fine-tuning (fine-tune) of the AI model utilized in step S103, and transmit information about the training/fine-tuning to the BS. In addition, the UE may also transmit information related to training/fine tuning to the BS for assisting training/fine tuning of the AI model utilized in step S103 in the BS.

The information may include at least one of an output of the AI model, a result of inference, information (available) for assisting the training/fine adjustment (for example, a measurement result of any RS that becomes an input of the AI model, an RS index, and the like), a model ID, association information, and the like. The UE may transmit the above information using uplink control information (Uplink Control Information (UCI)), may transmit the above information using a MAC CE in PUSCH, or may transmit the above information in the report of step S104.

Step S106

In step S106, the BS may evaluate the performance of the trained/tuned AI model based on the information about training/tuning transmitted in step S105, and determine whether to use the trained/tuned AI model for updating/replacing the original (original) AI model.

According to the fourth embodiment described above, the control based on the AI model can be appropriately performed.

< others >

In the present disclosure, it is assumed that one value illustrates a predicted value, but is not limited thereto. For example, the predicted value may also be calculated as a probability density function (Probability Density Function (PDF))/cumulative distribution function (Cumulative Distribution Function (CDF)).

At least one of the above embodiments may also be applied only for UEs reporting or supporting a specific UE Capability (UE Capability).

The particular UE capability may also represent at least one of:

whether or not specific operations/information of the respective embodiments are supported (e.g., beam report based on AI-assisted beam estimation, beam setting information); and

the accuracy of the beam quality estimation.

The UE capability may be reported per Frequency, per Frequency Range (e.g., frequency Range 1 (FR 1)), frequency Range 2 (RF 2)), FR2-1, FR 2-2), per cell, per subcarrier spacing (SubCarrier Spacing (SCS)).

The UE capability may be reported commonly for time division duplexing (Time Division Duplex (TDD)) and frequency division duplexing (Frequency Division Duplex (FDD)) or may be reported independently.

At least one of the above embodiments may be applied when the UE sets specific information related to the above embodiments by higher layer signaling. For example, the specific information may be information indicating that the AI model is enabled, any RRC parameter for a specific version (e.g., rel.18), or the like.

(Wireless communication System)

The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the embodiments of the present disclosure or a combination thereof.

Fig. 14 is a diagram showing an example of a schematic configuration of a radio communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication by using long term evolution (Long Term Evolution (LTE)) standardized by the third generation partnership project (Third Generation Partnership Project (3 GPP)), the fifth generation mobile communication system new wireless (5 th generation mobile communication system New Radio (5G NR)), or the like.

The wireless communication system 1 may support dual connection (Multi-RAT dual connection (Multi-RAT Dual Connectivity (MR-DC))) between a plurality of radio access technologies (Radio Access Technology (RATs)). MR-DC may also include a dual connection of LTE (evolved universal terrestrial radio Access (Evolved Universal Terrestrial Radio Access (E-UTRA))) with NR (E-UTRA-NR dual connection (E-UTRA-NR Dual Connectivity (EN-DC))), NR with LTE (NR-E-UTRA dual connection (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

In EN-DC, a base station (eNB) of LTE (E-UTRA) is a Master Node (MN), and a base station (gNB) of NR is a Slave Node (SN). In NE-DC, the base station (gNB) of NR is MN and the base station (eNB) of LTE (E-UTRA) is SN.

The wireless communication system 1 may also support dual connections between multiple base stations within the same RAT (e.g., dual connection (NR-NR dual connection (NR-NR Dual Connectivity (NN-DC))) of a base station (gNB) where both MN and SN are NRs).

The radio communication system 1 may include a base station 11 forming a macro cell C1 having a relatively wide coverage area, and base stations 12 (12 a to 12C) arranged in the macro cell C1 and forming a small cell C2 narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The arrangement, number, etc. of each cell and user terminal 20 are not limited to those shown in the figure. Hereinafter, the base stations 11 and 12 are collectively referred to as a base station 10 without distinction.

The user terminal 20 may also be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (Carrier Aggregation (CA)) using a plurality of component carriers (Component Carrier (CC)) and Dual Connection (DC).

Each CC may be included in at least one of the first Frequency band (Frequency Range 1 (FR 1)) and the second Frequency band (Frequency Range 2 (FR 2))). The macrocell C1 may be included in the FR1 and the small cell C2 may be included in the FR 2. For example, FR1 may be a frequency band of 6GHz or less (lower than 6GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24GHz (above-24 GHz). The frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may be a higher frequency band than FR 2.

The user terminal 20 may perform communication using at least one of time division duplex (Time Division Duplex (TDD)) and frequency division duplex (Frequency Division Duplex (FDD)) in each CC.

The plurality of base stations 10 may also be connected by wire (e.g., optical fiber based on a common public radio interface (Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication is utilized as a backhaul between the base stations 11 and 12, the base station 11 corresponding to a higher-level station may be referred to as an integrated access backhaul (Integrated Access Backhaul (IAB)) donor (donor), and the base station 12 corresponding to a relay station (relay) may be referred to as an IAB node.

The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The Core Network 30 may include at least one of an evolved packet Core (Evolved Packet Core (EPC)), a 5G Core Network (5 GCN), a next generation Core (Next Generation Core (NGC)), and the like, for example.

The user terminal 20 may be a terminal supporting at least one of communication schemes such as LTE, LTE-a, and 5G.

In the wireless communication system 1, a wireless access scheme based on orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing (OFDM)) may be used. For example, cyclic prefix OFDM (Cyclic Prefix OFDM (CP-OFDM)), discrete fourier transform spread OFDM (Discrete Fourier Transform Spread OFDM (DFT-s-OFDM)), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access (OFDMA)), single carrier frequency division multiple access (Single Carrier Frequency Division Multiple Access (SC-FDMA)), and the like may be used in at least one of Downlink (DL)) and Uplink (UL).

The radio access scheme may also be referred to as waveform (waveform). In the radio communication system 1, other radio access schemes (for example, other single carrier transmission schemes and other multi-carrier transmission schemes) may be used for the UL and DL radio access schemes.

As the downlink channel, a downlink shared channel (physical downlink shared channel (Physical Downlink Shared Channel (PDSCH))), a broadcast channel (physical broadcast channel (Physical Broadcast Channel (PBCH)))), a downlink control channel (physical downlink control channel (Physical Downlink Control Channel (PDCCH))), and the like shared by the user terminals 20 may be used in the wireless communication system 1.

As the uplink channel, an uplink shared channel (physical uplink shared channel (Physical Uplink Shared Channel (PUSCH))), an uplink control channel (physical uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (physical random access channel (Physical Random Access Channel (PRACH))), or the like shared by the user terminals 20 may be used in the wireless communication system 1.

User data, higher layer control information, system information blocks (System Information Block (SIBs)), and the like are transmitted through the PDSCH. User data, higher layer control information, etc. may also be transmitted through the PUSCH. In addition, a master information block (Master Information Block (MIB)) may also be transmitted through the PBCH.

Lower layer control information may also be transmitted through the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI))) including scheduling information of at least one of PDSCH and PUSCH.

The DCI scheduling PDSCH may be referred to as DL allocation, DL DCI, or the like, and the DCI scheduling PUSCH may be referred to as UL grant, UL DCI, or the like. The PDSCH may be rewritten to DL data, and the PUSCH may be rewritten to UL data.

In the detection of PDCCH, a control resource set (COntrol REsource SET (CORESET)) and a search space (search space) may also be utilized. CORESET corresponds to searching for the resources of DCI. The search space corresponds to a search region of PDCCH candidates (PDCCH candidates) and a search method. A CORESET may also be associated with one or more search spaces. The UE may also monitor CORESET associated with a certain search space based on the search space settings.

One search space may also correspond to PDCCH candidates corresponding to one or more aggregation levels (aggregation Level). One or more search spaces may also be referred to as a set of search spaces. In addition, "search space", "search space set", "search space setting", "search space set setting", "CORESET setting", and the like of the present disclosure may also be rewritten with each other.

Uplink control information (Uplink Control Information (UCI)) including at least one of channel state information (Channel State Information (CSI)), transmission acknowledgement information (e.g., also referred to as hybrid automatic repeat request acknowledgement (Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK)), ACK/NACK, etc.), and scheduling request (Scheduling Request (SR)) may also be transmitted through the PUCCH. The random access preamble used to establish a connection with a cell may also be transmitted via the PRACH.

In addition, in the present disclosure, downlink, uplink, etc. may be expressed without "link". The present invention may be expressed without "Physical" at the beginning of each channel.

In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), and the like may be transmitted. As DL-RS, a Cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), and the like may be transmitted in the wireless communication system 1.

The synchronization signal may be at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)), for example. The signal blocks including SS (PSS, SSs) and PBCH (and DMRS for PBCH) may also be referred to as SS/PBCH blocks, SS blocks (SSB)), or the like. In addition, SS, SSB, etc. may also be referred to as reference signals.

In the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a reference signal for measurement (sounding reference signal (Sounding Reference Signal (SRS))), a reference signal for Demodulation (DMRS), and the like may be transmitted. In addition, the DMRS may also be referred to as a user terminal specific reference signal (UE-specific Reference Signal).

(base station)

Fig. 15 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transmitting/receiving unit 120, a transmitting/receiving antenna 130, and a transmission path interface (transmission line interface (transmission line interface)) 140. The control unit 110, the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140 may be provided with one or more components.

In this example, the functional blocks of the characteristic part in the present embodiment are mainly shown, and it is also conceivable that the base station 10 further has other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

The control unit 110 performs control of the entire base station 10. The control unit 110 can be configured by a controller, a control circuit, or the like described based on common knowledge in the technical field of the present disclosure.

The control unit 110 may also control generation of signals, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission/reception, measurement, and the like using the transmission/reception unit 120, the transmission/reception antenna 130, and the transmission path interface 140. The control unit 110 may generate data, control information, a sequence (sequence), and the like transmitted as signals, and forward the generated data to the transmitting/receiving unit 120. The control unit 110 may perform call processing (setting, release, etc.) of the communication channel, state management of the base station 10, management of radio resources, and the like.

The transmitting/receiving unit 120 may include a baseband (baseband) unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may also include a transmission processing unit 1211 and a reception processing unit 1212. The transmitting/receiving unit 120 may be configured of a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measurement circuit, a transmitting/receiving circuit, and the like, which are described based on common knowledge in the technical field of the present disclosure.

The transmitting/receiving unit 120 may be configured as an integral transmitting/receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmission unit may be composed of the transmission processing unit 1211 and the RF unit 122. The receiving unit may be composed of a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

The transmitting/receiving antenna 130 may be constituted by an antenna described based on common knowledge in the technical field of the present disclosure, for example, an array antenna or the like.

The transmitting/receiving unit 120 may transmit the downlink channel, the synchronization signal, the downlink reference signal, and the like. The transmitting/receiving unit 120 may receive the uplink channel, the uplink reference signal, and the like.

The transmitting-receiving unit 120 may also form at least one of a transmit beam and a receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), and the like.

The transmission/reception section 120 (transmission processing section 1211) may perform processing of a packet data convergence protocol (Packet Data Convergence Protocol (PDCP)) layer, processing of a radio link control (Radio Link Control (RLC)) layer (for example, RLC retransmission control), processing of a medium access control (Medium Access Control (MAC)) layer (for example, HARQ retransmission control), and the like with respect to data, control information, and the like acquired from the control section 110, for example, to generate a bit sequence to be transmitted.

The transmission/reception section 120 (transmission processing section 1211) may perform transmission processing such as channel coding (error correction coding may be included), modulation, mapping, filter processing (filtering processing), discrete fourier transform (Discrete Fourier Transform (DFT)) processing (if necessary), inverse fast fourier transform (Inverse Fast Fourier Transform (IFFT)) processing, precoding, and digital-analog conversion on a bit string to be transmitted, and output a baseband signal.

The transmitting/receiving unit 120 (RF unit 122) may perform modulation, filter processing, amplification, etc. on the baseband signal in the radio frequency band, and transmit the signal in the radio frequency band via the transmitting/receiving antenna 130.

On the other hand, the transmitting/receiving unit 120 (RF unit 122) may amplify, filter-process, demodulate a signal in a radio frequency band received by the transmitting/receiving antenna 130, and the like.

The transmitting/receiving section 120 (reception processing section 1212) may apply an analog-to-digital conversion, a fast fourier transform (Fast Fourier Transform (FFT)) process, an inverse discrete fourier transform (Inverse Discrete Fourier Transform (IDFT)) process (if necessary), a filter process, demapping, demodulation, decoding (error correction decoding may be included), a MAC layer process, an RLC layer process, a PDCP layer process, and other reception processes to the acquired baseband signal, and acquire user data.

The transmitting-receiving unit 120 (measuring unit 123) may also perform measurements related to the received signals. For example, measurement section 123 may perform radio resource management (Radio Resource Management (RRM)) measurement, channel state information (Channel State Information (CSI)) measurement, and the like based on the received signal. Measurement section 123 may also measure received power (for example, reference signal received power (Reference Signal Received Power (RSRP))), received quality (for example, reference signal received quality (Reference Signal Received Quality (RSRQ)), signal-to-interference-plus-noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal-to-noise ratio (Signal to Noise Ratio (SNR))), signal strength (for example, received signal strength indicator (Received Signal Strength Indicator (RSSI)), propagation path information (for example, CSI), and the like. The measurement results may also be output to the control unit 110.

The transmission path interface 140 may transmit and receive signals (backhaul signaling) to and from devices, other base stations 10, and the like included in the core network 30, or may acquire and transmit user data (user plane data), control plane data, and the like for the user terminal 20.

In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may be configured by at least one of the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140.

The transmitting/receiving unit 120 may transmit beam setting information including information of an angle or a phase of a beam applied to a Reference Signal (RS) to the user terminal 20.

The transmitting/receiving unit 120 may receive information on measurement results of other reference signals estimated based on the measurement results of the reference signals and the beam setting information from the user terminal 20.

The transmitting/receiving unit 120 may receive capability information (UE capability) indicating that inference of an artificial intelligence (Artificial Intelligence (AI)) model is supported from the user terminal 20.

The transmitting/receiving unit 120 may transmit association information associated with a specific AI model to the user terminal 20.

The control unit 110 may also perform control (e.g., scheduling) based on the following results: that is, the results (e.g., the best CSI-RS index) are deduced by the user terminal 20 using the specific AI model based on the association information and reported.

(user terminal)

Fig. 16 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting/receiving unit 220, and a transmitting/receiving antenna 230. The control unit 210, the transmitting/receiving unit 220, and the transmitting/receiving antenna 230 may be provided with one or more types.

In this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and it is also conceivable that the user terminal 20 further has other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

The control unit 210 performs control of the entire user terminal 20. The control unit 210 can be configured by a controller, a control circuit, or the like described based on common knowledge in the technical field of the present disclosure.

The control unit 210 may also control the generation of signals, mapping, etc. The control unit 210 may control transmission/reception, measurement, and the like using the transmission/reception unit 220 and the transmission/reception antenna 230. The control unit 210 may generate data, control information, a sequence, and the like transmitted as signals, and forward the generated data to the transmitting/receiving unit 220.

The transceiver unit 220 may also include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmitting/receiving unit 220 may be configured of a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitting/receiving circuit, and the like, which are described based on common knowledge in the technical field of the present disclosure.

The transmitting/receiving unit 220 may be configured as an integral transmitting/receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmission means may be constituted by the transmission processing means 2211 and the RF means 222. The receiving unit may be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

The transmitting/receiving antenna 230 may be constituted by an antenna described based on common knowledge in the technical field of the present disclosure, for example, an array antenna or the like.

The transceiver unit 220 may also receive the above-described downlink channel, synchronization signal, downlink reference signal, and the like. The transceiver unit 220 may transmit the uplink channel, the uplink reference signal, and the like.

The transmitting-receiving unit 220 may also form at least one of a transmit beam and a receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), and the like.

The transmission/reception section 220 (transmission processing section 2211) may perform, for example, PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control) and the like with respect to the data, control information and the like acquired from the control section 210, and generate a bit sequence to be transmitted.

The transmission/reception section 220 (transmission processing section 2211) may perform transmission processing such as channel coding (error correction coding may be included), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion, and the like for a bit string to be transmitted, and output a baseband signal.

Further, whether to apply DFT processing may be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is valid (enabled), the transmission/reception section 220 (transmission processing section 2211) may perform DFT processing as the transmission processing for transmitting the channel using a DFT-s-OFDM waveform, and if not, the transmission/reception section 220 (transmission processing section 2211) may not perform DFT processing as the transmission processing.

The transmitting/receiving unit 220 (RF unit 222) may perform modulation, filter processing, amplification, etc. for the baseband signal in the radio frequency band, and transmit the signal in the radio frequency band via the transmitting/receiving antenna 230.

On the other hand, the transmitting/receiving unit 220 (RF unit 222) may amplify, filter-process, demodulate a baseband signal, and the like, with respect to a signal in a radio frequency band received through the transmitting/receiving antenna 230.

The transmitting/receiving section 220 (reception processing section 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filter processing, demapping, demodulation, decoding (error correction decoding may be included), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data.

The transceiver unit 220 (measurement unit 223) may also perform measurements related to the received signals. For example, the measurement unit 223 may also perform RRM measurement, CSI measurement, and the like based on the received signal. The measurement unit 223 may also measure for received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting/receiving unit 220, the transmitting/receiving antenna 230, and the transmission path interface 240.

The transmitting/receiving unit 220 may receive beam setting information including information of an angle or a phase of a beam applied to the reference signal.

The control unit 210 may also estimate measurement results of other reference signals based on the measurement results of the reference signals and the beam setting information.

The beam setting information may further include information on the width of the beam, information on an antenna interval used for transmitting the beam, and information on a radiation pattern of the beam.

Further, the transmitting-receiving unit 220 may also transmit capability information indicating a case of supporting inference of an artificial intelligence (Artificial Intelligence (AI)) model. The transmitting-receiving unit 220 may also receive association information associated with a particular AI model.

The control unit 210 may also implement inference using the specific AI model based on the association information.

The association information may contain information about cells corresponding to AI-assistance techniques. In this case, the control unit 210 may also perform inference using the specific AI model on the cell.

The transmitting and receiving unit 220 may also receive beam setting information including information of an angle or a phase of a beam applied to the reference signal. In this case, the control unit 210 may perform inference using the specific AI model based on the measurement result of the reference signal and the beam setting information.

The control unit 210 may also send information that enables fine tuning for the particular AI model.

(hardware construction)

The block diagrams used in the description of the above embodiments show blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. The implementation method of each functional block is not particularly limited. That is, each functional block may be realized by one device physically or logically combined, or two or more devices physically or logically separated may be directly or indirectly connected (for example, by a wire, a wireless, or the like) and realized by these plural devices. The functional blocks may also be implemented by combining the above-described device or devices with software.

Here, the functions include, but are not limited to, judgment, decision, judgment, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, establishment, comparison, assumption, expectation, view, broadcast (broadcasting), notification (notification), communication (communication), forwarding (forwarding), configuration (configuration), reconfiguration (reconfiguration), allocation (mapping), assignment (allocation), and the like. For example, a functional block (structural unit) that realizes the transmission function may also be referred to as a transmission unit (transmitting unit), a transmitter (transmitter), or the like. As described above, the implementation method is not particularly limited.

For example, a base station, a user terminal, and the like in one embodiment of the present disclosure may also function as a computer that performs the processing of the wireless communication method of the present disclosure. Fig. 21 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to an embodiment. The base station 10 and the user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

In addition, in this disclosure, terms of apparatus, circuit, device, section, unit, and the like can be rewritten with each other. The hardware configuration of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to not include a part of the devices.

For example, the processor 1001 is shown as only one, but there may be multiple processors. Further, the processing may be performed by one processor, or the processing may be performed by two or more processors simultaneously, sequentially, or by other means. The processor 1001 may be realized by one or more chips.

Each function in the base station 10 and the user terminal 20 is realized by, for example, reading specific software (program) into hardware such as the processor 1001 and the memory 1002, performing an operation by the processor 1001, controlling communication via the communication device 1004, or controlling at least one of reading and writing of data in the memory 1002 and the memory 1003.

The processor 1001, for example, causes an operating system to operate to control the entire computer. The processor 1001 may be configured by a central processing unit (Central Processing Unit (CPU)) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, at least a part of the control unit 110 (210), the transmitting/receiving unit 120 (220), and the like described above may be implemented by the processor 1001.

Further, the processor 1001 reads out a program (program code), a software module, data, or the like from at least one of the memory 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment can be used. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same may be implemented for other functional blocks.

The Memory 1002 may be a computer-readable recording medium, and may be constituted by at least one of a Read Only Memory (ROM), an erasable programmable Read Only Memory (Erasable Programmable ROM (EPROM)), an electrically erasable programmable Read Only Memory (Electrically EPROM (EEPROM)), a random access Memory (Random Access Memory (RAM)), and other suitable storage media, for example. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage), or the like. The memory 1002 can store programs (program codes), software modules, and the like executable to implement a wireless communication method according to an embodiment of the present disclosure.

The storage 1003 may also be a computer-readable recording medium, for example, constituted by at least one of a flexible disk (flexible Disc), a soft (registered trademark) disk, an magneto-optical disk (for example, a Compact Disc read only memory (CD-ROM), etc.), a digital versatile Disc, a Blu-ray (registered trademark) disk, a removable magnetic disk (removables), a hard disk drive, a smart card, a flash memory device (for example, a card, a stick, a key drive), a magnetic stripe (strip), a database, a server, and other suitable storage medium. The storage 1003 may also be referred to as secondary storage.

The communication device 1004 is hardware (transmission/reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, or the like, for example. In order to realize at least one of frequency division duplexing (Frequency Division Duplex (FDD)) and time division duplexing (Time Division Duplex (TDD)), the communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like. For example, the transmitting/receiving unit 120 (220), the transmitting/receiving antenna 130 (230), and the like described above may be implemented by the communication device 1004. The transmitting/receiving unit 120 (220) may be implemented by physically or logically separating the transmitting unit 120a (220 a) and the receiving unit 120b (220 b).

The input device 1005 is an input apparatus (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, or the like) that receives an input from the outside. The output device 1006 is an output apparatus (for example, a display, a speaker, a light emitting diode (Light Emitting Diode (LED)) lamp, or the like) that performs output to the outside. The input device 1005 and the output device 1006 may be integrated (for example, a touch panel).

The processor 1001, the memory 1002, and other devices are connected by a bus 1007 for communicating information. The bus 1007 may be formed using a single bus or may be formed using different buses between devices.

The base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (Digital Signal Processor (DSP)), an application specific integrated circuit (Application Specific Integrated Circuit (ASIC)), a programmable logic device (Programmable Logic Device (PLD)), and a field programmable gate array (Field Programmable Gate Array (FPGA)), or may be configured to implement a part or all of the functional blocks by using the hardware. For example, the processor 1001 may also be implemented using at least one of these hardware.

(modification)

In addition, with respect to terms described in the present disclosure and terms required for understanding the present disclosure, terms having the same or similar meanings may be substituted. For example, channels, symbols, and signals (signals or signaling) may also be interchanged. In addition, the signal may also be a message. The Reference Signal (RS) can also be simply referred to as RS, and may also be referred to as Pilot (Pilot), pilot Signal, or the like, depending on the standard applied. In addition, the component carrier (Component Carrier (CC)) may also be referred to as a cell, a frequency carrier, a carrier frequency, or the like.

A radio frame may also consist of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may also be referred to as a subframe. Further, a subframe may also be formed of one or more slots in the time domain. The subframes may also be a fixed length of time (e.g., 1 ms) independent of the parameter set (numerology).

Here, the parameter set may also be a communication parameter applied in at least one of transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of a subcarrier spacing (SubCarrier Spacing (SCS)), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (Transmission Time Interval (TTI)), a number of symbols per TTI, a radio frame structure, a specific filter process performed by a transceiver in a frequency domain, a specific windowing (windowing) process performed by a transceiver in a time domain, and the like.

A slot may also be formed in the time domain from one or more symbols, orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing (OFDM)) symbols, single carrier frequency division multiple access (Single Carrier Frequency Division Multiple Access (SC-FDMA)) symbols, and so on. Furthermore, the time slots may also be time units based on parameter sets.

The time slot may also contain a plurality of mini-slots. Each mini-slot may also be formed of one or more symbols in the time domain. In addition, the mini-slot may also be referred to as a sub-slot. Mini-slots may also be made up of a fewer number of symbols than slots. PDSCH (or PUSCH) transmitted in a larger time unit than the mini-slot may also be referred to as PDSCH (PUSCH) mapping type a. PDSCH (or PUSCH) transmitted using mini-slots may also be referred to as PDSCH (PUSCH) mapping type B.

The radio frame, subframe, slot, mini-slot, and symbol each represent a unit of time when a signal is transmitted. The radio frames, subframes, slots, mini-slots, and symbols may also use other designations that each corresponds to. In addition, the frame, subframe, slot, mini-slot, symbol, and the like units in the present disclosure may also be rewritten with each other.

For example, one subframe may also be referred to as a TTI, a plurality of consecutive subframes may also be referred to as a TTI, and one slot or one mini-slot may also be referred to as a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in the conventional LTE, may be a period (for example, 1 to 13 symbols) shorter than 1ms, or may be a period longer than 1 ms. The unit indicating the TTI may be referred to as a slot, a mini-slot, or the like, instead of a subframe.

Here, TTI refers to, for example, a scheduled minimum time unit in wireless communication. For example, in the LTE system, a base station performs scheduling for each user terminal to allocate radio resources (frequency bandwidth, transmission power, and the like that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited thereto.

The TTI may be a transmission time unit of a data packet (transport block), a code block, a codeword, or the like subjected to channel coding, or may be a processing unit such as scheduling or link adaptation. In addition, when a TTI is given, a time interval (e.g., the number of symbols) in which a transport block, a code block, a codeword, etc. are actually mapped may be shorter than the TTI.

In addition, in the case where one slot or one mini-slot is referred to as a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) may also be the minimum time unit of scheduling. In addition, the number of slots (mini-slots) constituting the minimum time unit of the schedule can also be controlled.

A TTI having a time length of 1ms may also be referred to as a normal TTI (TTI in 3gpp rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a slot, etc. A TTI that is shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini-slot, a sub-slot, a slot, etc.

In addition, a long TTI (e.g., normal TTI, subframe, etc.) may be rewritten to a TTI having a time length exceeding 1ms, and a short TTI (e.g., shortened TTI, etc.) may be rewritten to a TTI having a TTI length less than the long TTI and a TTI length of 1ms or more.

A Resource Block (RB) is a Resource allocation unit of a time domain and a frequency domain, and may include one or a plurality of consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in the RB may be the same regardless of the parameter set, and may be 12, for example. The number of subcarriers included in the RB may also be decided based on the parameter set.

Further, the RB may also contain one or more symbols in the time domain, and may be one slot, one mini-slot, one subframe, or one TTI in length. One TTI, one subframe, etc. may also be respectively composed of one or more resource blocks.

In addition, one or more RBs may also be referred to as Physical Resource Blocks (PRBs), subcarrier groups (SCGs), resource element groups (Resource Element Group (REGs)), PRB pairs, RB peering.

Furthermore, a Resource block may also be composed of one or more Resource Elements (REs). For example, one RE may be a subcarrier and a radio resource area of one symbol.

A Bandwidth Part (BWP) (which may also be referred to as a partial Bandwidth, etc.) may also represent a subset of consecutive common RBs (common resource blocks (common resource blocks)) for a certain parameter set in a certain carrier. Here, the common RB may also be determined by an index of the RB with reference to the common reference point of the carrier. PRBs may be defined in a BWP and numbered in the BWP.

The BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL). For a UE, one or more BWP may also be set in one carrier.

At least 1 of the set BWP may also be activated, and the UE may not contemplate: the specific signal/channel is transmitted and received outside the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be rewritten as "BWP".

The above-described configurations of radio frames, subframes, slots, mini slots, symbols, and the like are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the Cyclic Prefix (CP) length, and the like can be variously changed.

The information, parameters, and the like described in the present disclosure may be expressed in absolute values, relative values to a specific value, or other corresponding information. For example, radio resources may also be indicated by a particular index.

In the present disclosure, the names used for parameters and the like are not restrictive names in all aspects. Further, the mathematical expression or the like using these parameters may also be different from that explicitly disclosed in the present disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting names in all respects.

Information, signals, etc. described in this disclosure may also be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips (chips), and the like may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination thereof.

Further, information, signals, etc. can be output in at least one of the following directions: from higher layer (upper layer) to lower layer (lower layer), and from lower layer to higher layer. Information, signals, etc. may also be input and output via a plurality of network nodes.

The input/output information, signals, and the like may be stored in a specific location (for example, a memory), or may be managed by a management table. The input and output information, signals, etc. may be overwritten, updated, or added. The outputted information, signals, etc. may also be deleted. The input information, signals, etc. may also be transmitted to other devices.

The notification of information is not limited to the embodiment described in the present disclosure, but may be performed by other methods. For example, notification of information in the present disclosure may also be implemented by physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), uplink control information (Uplink Control Information (UCI)))), higher layer signaling (e.g., radio resource control (Radio Resource Control (RRC)) signaling, broadcast information (master information block (Master Information Block (MIB)), system information block (System Information Block (SIB)) or the like), medium access control (Medium Access Control (MAC)) signaling), other signals, or a combination thereof.

The physical Layer signaling may be referred to as Layer 1/Layer 2 (L1/L2)) control information (L1/L2 control signal), L1 control information (L1 control signal), or the like. The RRC signaling may be called an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration)) message, or the like. The MAC signaling may be notified using, for example, a MAC control element (MAC Control Element (CE)).

Note that the notification of specific information (for example, notification of "X") is not limited to explicit notification, and may be performed implicitly (for example, by notification of no specific information or notification of other information).

The determination may be performed by a value (0 or 1) represented by one bit, a true or false value (boolean) represented by true or false, or a comparison of values (e.g., with a specific value).

Software, whether referred to as software (firmware), middleware (middleware-software), microcode (micro-code), hardware description language, or by other names, should be construed broadly to mean instructions, instruction sets, codes (codes), code segments (code fragments), program codes (program codes), programs (programs), subroutines (sub-programs), software modules (software modules), applications (applications), software applications (software application), software packages (software packages), routines (routines), subroutines (sub-routines), objects (objects), executable files, threads of execution, procedures, functions, and the like.

In addition, software, instructions, information, etc. may also be transmitted and received via a transmission medium. For example, in the case of transmitting software from a website, server, or other remote source (remote source) using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (Digital Subscriber Line (DSL)), etc.) and wireless technology (infrared, microwave, etc.), the at least one of wired technology and wireless technology is included in the definition of transmission medium.

The terms "system" and "network" as used in this disclosure can be used interchangeably. "network" may also mean a device (e.g., a base station) included in a network.

In the present disclosure, terms such as "precoding", "precoder", "weight", "Quasi Co-Location", "transmission setting instruction state (Transmission Configuration Indication state (TCI state))", "spatial relationship", "spatial domain filter (spatial domain filter)", "transmission power", "phase rotation", "antenna port group", "layer number", "rank", "resource set", "resource group", "beam width", "beam angle", "antenna element", "panel", and the like can be used interchangeably.

In the present disclosure, terms such as "Base Station (BS))", "radio Base Station", "fixed Station", "NodeB", "eNB (eNodeB)", "gNB (gndeb)", "access Point", "Transmission Point (Transmission Point (TP))", "Reception Point (RP))", "Transmission Reception Point (Transmission/Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", and the like can be used interchangeably. There are also cases where the base station is referred to by terms of a macrocell, a small cell, a femtocell, a picocell, and the like.

The base station can accommodate one or more (e.g., three) cells. In the case of a base station accommodating a plurality of cells, the coverage area of the base station can be divided into a plurality of smaller areas, each of which can also provide communication services through a base station subsystem, such as a small base station for indoor use (remote radio head (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a portion or the entirety of the coverage area of at least one of the base station and the base station subsystem that is in communication service within that coverage area.

In the present disclosure, terms such as "Mobile Station (MS)", "User terminal", "User Equipment (UE)", "terminal", and the like can be used interchangeably.

There are also situations where a mobile station is referred to by a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand-held communicator (hand set), user agent, mobile client, or a number of other suitable terms.

At least one of the base station and the mobile station may also be referred to as a transmitting apparatus, a receiving apparatus, a wireless communication apparatus, or the like. At least one of the base station and the mobile station may be a device mounted on a mobile body, or the like. The mobile body may be a vehicle (e.g., a vehicle, an airplane, etc.), a mobile body that moves unmanned (e.g., an unmanned aerial vehicle (clone), an autonomous vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may be an internet of things (Internet of Things (IoT)) device such as a sensor.

In addition, the base station in the present disclosure may also be rewritten as a user terminal. For example, the various aspects/embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between a plurality of user terminals (for example, may also be referred to as Device-to-Device (D2D)), vehicle-to-evaluation (V2X), or the like. In this case, the user terminal 20 may have the functions of the base station 10 described above. Further, the language "Uplink", "downlink", or the like may be rewritten to a language (for example, "sidelink") corresponding to the inter-terminal communication. For example, an uplink channel, a downlink channel, or the like may be rewritten as a side link channel.

Likewise, the user terminal in the present disclosure may also be rewritten as a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

In the present disclosure, the operation performed by the base station may be performed by an upper node (upper node) according to circumstances. Obviously, in a network comprising one or more network nodes (network nodes) with base stations, various operations performed for communication with a terminal may be performed by a base station, one or more network nodes other than a base station (e.g. considering a mobility management entity (Mobility Management Entity (MME)), a Serving-Gateway (S-GW)), etc., but not limited thereto, or a combination thereof.

The embodiments described in the present disclosure may be used alone, in combination, or switched depending on the execution. The processing procedure, the sequence, the flow chart, and the like of each embodiment/mode described in the present disclosure may be changed as long as they are not contradictory. For example, for the methods described in this disclosure, elements of the various steps are presented using the illustrated order, but are not limited to the particular order presented.

The various modes/embodiments described in the present disclosure can also be applied to long term evolution (Long Term Evolution (LTE)), LTE-Advanced (LTE-a), LTE-Beyond (LTE-B), upper 3G, IMT-Advanced, fourth-generation mobile communication system (4 th generation mobile communication system (4G)), fifth-generation mobile communication system (5 th generation mobile communication system (5G)), sixth-generation mobile communication system (6 th generation mobile communication system (6G)), x-th-generation mobile communication system (xth generation mobile communication system (xG)) (xG (x is, for example, an integer, a decimal)), future wireless access (Future Radio Access (FRA)), new wireless access technology (New-Radio Access Technology (RAT)), new wireless (New Radio (NR)), new Radio access (NX), new-generation wireless access (Future generation Radio access (FX)), global system for mobile communication (Global System for Mobile communications (GSM (registered trademark)), 2000, ultra mobile broadband (Ultra Mobile Broadband (UMB)), IEEE 802.11 (IEEE-Fi (registered trademark) 802.16 (Wi) and (registered trademark), bluetooth (20) and other suitable methods based on them, and the like, and the Ultra-WideBand (UWB) can be obtained, multiple systems may also be applied in combination (e.g., LTE or LTE-a, in combination with 5G, etc.).

The term "based on" as used in the present disclosure is not intended to mean "based only on" unless specifically written otherwise. In other words, the recitation of "based on" means "based only on" and "based at least on" both.

Any reference to elements using references in this specification to "first," "second," etc. does not entirely limit the amount or order of such elements. These designations can be used throughout this specification as a convenient method of distinguishing between two or more elements. Thus, reference to a first and second element does not mean that only two elements can be employed or that in some form the first element must precede the second element.

The term "determining" used in the present disclosure may include various actions. For example, the "judgment (decision)" may be a case where judgment (decision), calculation (calculation), processing (processing), derivation (development), investigation (investigation), search (lookup), search, inquiry (search in a table, database, or other data structure), confirmation (evaluation), or the like is regarded as "judgment (decision)".

The "determination (decision)" may be a case where reception (e.g., reception of information), transmission (e.g., transmission of information), input (input), output (output), access (processing) (e.g., access to data in a memory), or the like is regarded as "determination (decision)".

The "judgment (decision)" may be a case where resolution (resolution), selection (selection), selection (setting), establishment (establishment), comparison (comparison), or the like is regarded as "judgment (decision)". That is, the "judgment (decision)" may be a case where some actions are regarded as "judgment (decision)" to be performed.

The "judgment (decision)" may be rewritten as "assumption", "expectation", "consider", or the like.

The "maximum transmission power" described in the present disclosure may be the maximum value of transmission power, the nominal maximum transmission power (nominal UE maximum transmission power (the nominal UE maximum transmit power)), or the nominal maximum transmission power (nominal UE maximum transmission power (the rated UE maximum transmit power)).

The terms "connected", "coupled", or all variations thereof as used in this disclosure mean all connections or couplings, either direct or indirect, between two or more elements thereof, and can include the case where one or more intervening elements are present between two elements that are "connected" or "coupled" to each other. The bonding or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may also be rewritten as "access".

In the present disclosure, where two elements are connected, it is contemplated that more than one wire, cable, printed electrical connection, etc. can be used, and electromagnetic energy, etc. having wavelengths in the wireless frequency domain, the microwave region, the optical (both visible and invisible) region, etc. can be used as several non-limiting and non-inclusive examples, to be "connected" or "joined" to each other.

In the present disclosure, the term "a is different from B" may also mean that "a is different from B". In addition, the term may also mean that "A and B are each different from C". Terms such as "separate," coupled, "and the like may also be construed in the same manner as" different.

In the case where "including", "containing", and variations thereof are used in the present disclosure, these terms are meant to be inclusive in the same sense as the term "comprising". Further, the term "or" as used in this disclosure does not mean exclusive or.

In the present disclosure, for example, in the case where an article is appended by translation as in a, an, and the in english, the present disclosure may also include the case where a noun following the article is in plural form.

While the invention according to the present disclosure has been described in detail, it is obvious to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented as a modification and variation without departing from the spirit and scope of the invention defined based on the description of the claims. Accordingly, the description of the present disclosure is for illustrative purposes and is not intended to limit the invention in any way.

Claims (6)

1. A terminal, comprising:

a receiving unit that receives beam setting information including information of an angle or a phase of a beam applied to a reference signal; and

and a control unit estimating measurement results of other reference signals based on the measurement results of the reference signals and the beam setting information.

2. The terminal according to claim 1,

the beam setting information further includes information of a width of the beam.

3. The terminal according to claim 1 or claim 2,

the beam setting information further includes information of an antenna interval used for transmission of the beam.

4. The terminal according to any one of claim 1 to claim 3,

the beam setting information further includes information of a radiation pattern of the beam.

5. A wireless communication method for a terminal, the wireless communication method having:

a step of receiving beam setting information including information of an angle or a phase of a beam applied to a reference signal; and

estimating measurement results of other reference signals based on the measurement results of the reference signals and the beam setting information.

6. A base station, comprising:

a transmitting unit configured to transmit beam setting information including information of an angle or a phase of a beam applied to a reference signal to a terminal; and

and a receiving unit configured to receive, from the terminal, information on measurement results of other reference signals estimated based on the measurement results of the reference signals and the beam setting information.