Terminal device, base station device, and communication method

Abstract

The present invention provides a terminal device that communicates with a base station device, the terminal device comprising: an upper layer processing unit that receives a fourth parameter, a fifth parameter, and a sixth parameter; and a transmission unit that transmits uplink control information (UCI). The fourth parameter is a parameter for configuring CSI-RS resources, the fifth parameter is a parameter indicating the number K of CSI-RS resources predicted at each of time instances reported in a certain report configuration, and the sixth parameter is the number Y of the time instances for predicting L1-RSRP for each of the CSI-RSs. The UCI includes at least a first field set, the first field set is constituted of Y first fields, and each of the Y first fields indicates the number N of CSI-RS resource indices (CRIs) at each of the Y time instances.

Description

Terminal equipment, base station equipment, and communication method

[0001] The present invention relates to a terminal device, a base station device, and a communication method. This application claims priority to Japanese Patent Application No. 2024-194694, filed in Japan on November 6, 2024, the contents of which are incorporated herein by reference.

[0002] The cellular mobile communication radio access system and radio network (hereinafter referred to as "LTE (LongTerm Evolution)" or "EUTRA (Evolved Universal Terrestrial Radio Access)") is part of the Third Generation Partnership Project (3GPP:3 rd This is being considered in the Generation Partnership Project (trademark registered). In LTE, base station equipment may also be called eNodeB (evolved NodeB), and terminal equipment may also be called UE (User Equipment). LTE is a cellular communication system in which multiple base station devices are arranged in a cell-like structure to cover different areas. One base station device may manage one or more serving cells.

[0003] 3GPP is considering a next-generation wireless communication standard (NR: New Radio) to propose to IMT (International Mobile Telecommunication)-2020, the standard for next-generation mobile communication systems formulated by the International Telecommunication Union (ITU) (Non-Patent Literature 1). NR is required to meet the requirements of three scenarios—enhanced Mobile Broadband (eMBB), massive Machine Type Communication (mMTC), and Ultra Reliable and Low Latency Communication (URLLC)—within a single technological framework.

[0004] "New SID proposal: Study on New Radio Access Technology", RP-160671, NTT DOCOMO, 3GPP TSG RAN Meeting #71, Goteborg, Sweden, 7th - 10th March, 2016.

[0005] One aspect of the present invention provides a terminal device, a base station device, and a communication method used in the terminal device or the base station device for efficient communication.

[0006] (1) A first aspect of this embodiment of the present invention is a terminal device that communicates with a base station device, comprising: an upper layer processing unit that receives a fourth parameter, a fifth parameter and a sixth parameter; a receiving unit that receives CSI-RS based on the fourth parameter; a measuring unit that measures the L1-RSRP of each of the CSI-RS; and a transmitting unit that transmits uplink control information (UCI), wherein the fourth parameter is a parameter that sets the CSI-RS resources; the fifth parameter is a parameter that indicates the number K of predicted CSI-RS resources in each time instance reported in a certain report setting; the sixth parameter is the number Y of time instances for predicting the L1-RSRP of each of the CSI-RS; and the UCI includes at least a first field set, the first field set being Y first fields, each of the Y first fields indicating the number N of CSI-RS resource indices (CRI) in each of the Y time instances.

[0007] (2) A terminal device according to a first embodiment of this embodiment of the present invention, which receives a seventh parameter for setting a threshold for L1-RSRP, and in each of the time instances, the L1-RSRP associated with N CSI-RS resource indices is between a first value and a second value, the first value being the maximum L1-RSRP value predicted in the time instance, and the second value being the first value minus the threshold value.

[0008] (3) A terminal device according to a first embodiment of this embodiment of the present invention, wherein the UCI is composed of a first part and a second part, and the first part includes at least the first field set.

[0009] (4) A terminal device according to the first embodiment of this present invention, wherein the bit size of the first field is determined based on the value of K.

[0010] (5) A terminal device according to a first embodiment of this present invention, wherein the second part includes at least the N L1-RSRPs and the N CRIs in the Y time instances.

[0011] (6) A second aspect of this embodiment of the present invention is a base station device for communicating with a terminal device, comprising: an upper layer processing unit for setting a fourth parameter, a fifth parameter, a sixth parameter, and a seventh parameter; a transmitting unit for transmitting CSI-RS based on the fourth parameter; and a receiving unit for receiving uplink control information (UCI), wherein the fourth parameter is a parameter for setting the CSI-RS resources; the fifth parameter is a parameter indicating the number K of predicted CSI-RS resources in each time instance reported in a certain report setting; the sixth parameter is the number Y of time instances for predicting the L1-RSRP of each CSI-RS; the UCI includes at least a first field set, the first field set being Y first fields, each of the Y first fields indicating the number N of CSI-RS resource indices (CRIs) in each of the Y time instances.

[0012] (7) A third aspect of this embodiment of the present invention is a communication method in a terminal device communicating with a base station device, comprising: receiving a fourth parameter, a fifth parameter, a sixth parameter, and a seventh parameter; receiving a CSI-RS based on the fourth parameter; measuring the L1-RSRP of each of the CSI-RSs; and transmitting uplink control information (UCI), wherein the fourth parameter is a parameter for setting the CSI-RS resources; the fifth parameter is a parameter indicating the number K of predicted CSI-RS resources in each time instance reported in a certain report setting; the sixth parameter is the number Y of time instances for predicting the L1-RSRP of each of the CSI-RSs; and the UCI comprises at least a first field set, the first field set being Y first fields, each of the Y first fields indicating the number N of CSI-RS resource indices (CRIs) in each of the Y time instances.

[0013] According to one aspect of this invention, a terminal device can communicate efficiently. Furthermore, a base station device can communicate efficiently.

[0014] This is a conceptual diagram of a wireless communication system according to one aspect of this embodiment. ｓｌｏｔ ｓｙｍｂThis is an example showing the relationship between SCS setting μ and CP setting. This is a schematic diagram showing an example of a resource grid in a subframe according to one aspect of this embodiment. This is a schematic block diagram showing the configuration of terminal device 1 according to one aspect of this embodiment. This is a schematic block diagram showing the configuration of base station device 3 according to one aspect of this embodiment. This is a diagram showing an example of an AI / ML functional framework for an NR air interface by the terminal device and base station device according to this embodiment. This is a diagram showing an example of downlink beam prediction processing by base station device 3 according to this embodiment. This is a diagram showing an example of downlink beam prediction processing by terminal device 1 according to this embodiment. This is a diagram showing an example of a method for notifying information related to L1-RSRP measured in terminal device 1 according to this embodiment. This is a diagram showing an example of a method by which terminal device 1 according to this embodiment notifies L1-RSRP. This is a diagram showing an example of a method by which terminal device 1 according to this embodiment notifies L1-RSRP using differential RSRP. This is a diagram showing an example of a method for notifying information related to predicted L1-RSRP in terminal device 1 according to this embodiment.

[0015] Embodiments of the present invention will be described below.

[0016] "A, and / or B" may be a term that includes "A", "B", or "A and B".

[0017] Figure 1 is a conceptual diagram of a wireless communication system according to one embodiment of this model. In Figure 1, the wireless communication system comprises terminal devices 1A to 1C and a base station device 3. Hereinafter, terminal devices 1A to 1C may also be referred to as terminal device 1. The base station device 3 may include some or all of a communication device, a node, an NB (NodeB), an eNB, a gNB, a network device (core network, gateway), and an access point. Terminal device 1 may also be referred to as UE (User Equipment). An eNB is a node that provides EUTRA user plane and control plane protocol termination to one or more terminal devices 1, and an eNB connected to the fifth generation core network (5GC) via an NG (Next Generation) interface is referred to as an ng-eNB. A gNB is a node that provides NR user plane and control plane protocol termination to one or more terminal devices 1 and is connected to the 5GC via an NG interface.

[0018] The base station device 3 may constitute one or both of an MCG (Master Cell Group) and an SCG (Secondary Cell Group). An MCG is a group of serving cells comprising at least a PCell (Primary Cell). An SCG is a group of serving cells comprising at least a PSCell (Primary Secondary Cell). A PCell may be a serving cell given based on the initial connection. An MCG may comprise one or more SCells (Secondary Cells). An SCG may comprise one or more SCells. PCells and PSCells may be referred to as SpCells (Special Cells). The process of forming one CG (Cell Group) using one SpCell and one or more SCells and performing communication may be referred to as carrier aggregation.

[0019] The MCG may consist of one or more serving cells on EUTRA. The SCG may consist of one or more serving cells on NR. The MCG may consist of one or more serving cells on NR. The SCG may consist of one or more serving cells on EUTRA. The MCG and SCG may consist of one or more serving cells on either EUTRA or NR. Here, "on EUTRA" may include the meaning that EUTRA RAT (Radio Access Technology) is applied. "On NR" may include the meaning that NR RAT is applied.

[0020] Furthermore, the MCG may be composed of the first base station device. Also, the SCG may be composed of the second base station device. In other words, the PCell may be composed of the first base station device. The PSCell may be composed of the second base station device. The first base station device and the second base station device may each be the same as base station device 3.

[0021] The following explains the frame structure.

[0022] In a wireless communication system according to an aspect of this embodiment, OFDM (Orthogonal Frequency Division Multiplex) is at least used. An OFDM symbol is a unit in the time domain of OFDM. An OFDM symbol includes at least one or a plurality of subcarriers. An OFDM symbol is converted into a time - continuous signal in baseband signal generation. In the downlink, CP - OFDM (Cyclic Prefix - Orthogonal Frequency Division Multiplex) is at least used. In the uplink, either CP - OFDM or DFT - s - OFDM (Discrete Fourier Transform - spread - Orthogonal Frequency Division Multiplex) is used. DFT - s - OFDM may be given by applying transform precoding to CP - OFDM.

[0023] The subcarrier spacing (SCS) may be given by subcarrier spacing Δf = 2 μ ·15 kHz. For example, the SCS setting μ may be set to any one of 0, 1, 2, 3, 4, and / or 5. For a certain BWP (BandWidth Part), the SCS setting μ may be given by a parameter of the upper layer. That is, regardless of the downlink and / or uplink, the value of μ may be set for each BWP (for each downlink BWP, for each uplink BWP).

[0024] In a wireless communication system according to an aspect of this embodiment, the time unit T is used for expressing the length in the time domain. ｃ The time unit T ｃ is such that T ｃ = 1 / (Δf ｍａｘ ·N ｆ ). Δf ｍａｘ may be the maximum value of the SCS supported in a wireless communication system according to an aspect of this embodiment. Δfｍａｘ Δf ｍａｘ = 480 kHz is also acceptable. ｆ is, N ｆ It may also be 4096. The constant κ is given by κ = Δf ｍａｘ ・N ｆ / (Δf ｒｅｆ N ｆ，ｒｅｆ ) = 64. Δf ｒｅｆ It may also be 15 kHz. ｆ，ｒｅｆ It may also be 2048.

[0025] The constant κ is defined by the reference SCS and T ｃ The value may represent the relationship between the two. The constant κ may be used for the length of the subframe. The number of slots included in the subframe may be given, at least based on the constant κ. Δf ｒｅｆ This is a reference SCS, and N ｆ，ｒｅｆ This is the value corresponding to the reference SCS.

[0026] The transmission of a signal on the downlink and / or on the uplink consists of a 10ms frame. The frame consists of 10 subframes. The length of each subframe is 1ms. The length of the frame may be given regardless of SCSΔf; that is, the frame settings may be given regardless of the value of μ. The length of the subframe may be given regardless of SCSΔf; that is, the subframe settings may be given regardless of μ.

[0027] For a given SCS setting μ, the number of slots and their indices within a single subframe may be provided. For example, slot number n μ ｓ In the subframe, the range is from 0 to N ｓｕｂｆｒａｍｅ，μ ｓｌｏｔ The values ​​may be given in ascending order within the range of -1. For the SCS setting μ, the number of slots and their indices in a single frame may be given. Also, slot number n μ ｓ，ｆ In a frame, the value ranges from 0 to N. ｆｒａｍｅ，μ ｓｌｏｔ The numbers may be given in ascending order within the range of -1. Consecutive N ｓｌｏｔ ｓｙｍｂEach OFDM symbol may be contained within a single slot. ｓｌｏｔ ｓｙｍｂ The slot number may also be referred to as the slot index.

[0028] Figure 2 shows an N according to one aspect of this embodiment. ｓｌｏｔ ｓｙｍｂ This is an example showing the relationship between the SCS setting μ (also called the subcarrier spacing setting u) and the CP setting. In Figure 2A, for example, if the SCS setting μ is 2 and the CP setting is normal CP (NCP), then N ｓｌｏｔ ｓｙｍｂ = 14, N ｆｒａｍｅ，μ ｓｌｏｔ = 40, N ｓｕｂｆｒａｍｅ，μ ｓｌｏｔ = 4. Also, in Figure 2B, for example, if the SCS setting μ is 2 and the CP setting is extended CP (ECP), then N ｓｌｏｔ ｓｙｍｂ = 12, N ｆｒａｍｅ，μ ｓｌｏｔ = 40, N ｓｕｂｆｒａｍｅ，μ ｓｌｏｔ = 4.

[0029] The physical resources according to this embodiment will be described below.

[0030] An antenna port is defined by the fact that the channels through which symbols are transmitted in one antenna port can be estimated from the channels through which other symbols are transmitted in the same antenna port. Two antenna ports may be referred to as QCL (Quasi Co-Located) if the large-scale property of the channels through which symbols are transmitted in one antenna port can be estimated from the channels through which symbols are transmitted in another antenna port. The large-scale property may include at least the long-range properties of the channels. The large-scale property may include at least some or all of the delay spread, Doppler spread, Doppler shift, average gain, average delay, and some of the spatial Rx parameters. A first antenna port and a second antenna port being QCL with respect to beam parameters may mean that the received beam assumed by the receiver for the first antenna port is the same as the received beam assumed by the receiver for the second antenna port. For the first and second antenna ports to be QCL with respect to beam parameters, it is also possible that the transmission beam assumed by the receiver for the first antenna port and the transmission beam assumed by the receiver for the second antenna port are the same. Terminal device 1 may assume that the two antenna ports are QCL if the large-scale characteristics of the channel through which symbols are transmitted at one antenna port can be estimated from the channel through which symbols are transmitted at the other antenna port. For the two antenna ports to be QCL, it is also possible that it is assumed that the two antenna ports are QCL.

[0031] For the SCS setting μ and carrier set, N ｓｉｚｅ，μ ｇｒｉｄ，ｘ N ＲＢ ｓｃ Individual subcarriers and N ｓｕｂｆｒａｍｅ，μ ｓｙｍｂA resource grid defined by N OFDM symbols is given. ｓｉｚｅ，μ ｇｒｉｄ，ｘ This may indicate the number of resource blocks given for the SCS setting μ for carrier x. ｓｉｚｅ，μ ｇｒｉｄ，ｘ This may indicate the carrier bandwidth. ｓｉｚｅ，μ ｇｒｉｄ，ｘ This may correspond to the value of the higher-level parameter CarrierBandwidth. Carrier x may represent either a downlink carrier or an uplink carrier. That is, x may be either "DL" or "UL". ＲＢ ｓｃ This may indicate the number of subcarriers contained in a single resource block. ＲＢ ｓｃ This may be 12. At least one resource grid may be provided for each antenna port p, and / or for each SCS setting μ, and / or for each transmission direction setting. The transmission direction includes at least the downlink (DL) and uplink (UL). Hereinafter, a set of parameters including at least some or all of the antenna port p, SCS setting μ, and transmission direction settings may also be referred to as the first radio parameter set. In other words, one resource grid may be provided for each first radio parameter set. Note that a radio parameter set may be one or more sets containing one or more radio parameters (physical layer parameters or upper layer parameters).

[0032] In a downlink, the carriers included in the serving cell are called downlink carriers (or downlink component carriers). In an uplink, the carriers included in the serving cell are called uplink carriers (uplink component carriers). Downlink component carriers and uplink component carriers may be collectively referred to as component carriers (or carriers).

[0033] The serving cell type may be PCell, PSCell, or SCell. A PCell may be a serving cell identified at least based on a cell ID (physical layer cell ID, physical cell ID) obtained from an SSB (Synchronization signal / Physical broadcast channel block) during the initial connection. An SCell may be a serving cell used in carrier aggregation. An SCell may be a serving cell provided at least based on dedicated RRC signaling. Also, an SSB may be rephrased as an SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block.

[0034] Each element in the resource grid provided for each first set of radio parameters may be called a resource element (RE). The resource element is an index k in the frequency domain. ｓｃ And, the time domain index l ｓｙｍ This is determined by the following: For a certain first set of radio parameters, the resource element is the frequency domain index k ｓｃ And, the time domain index l ｓｙｍ It is determined by the frequency domain index k. ｓｃ and the time domain index l ｓｙｍ The resource element identified by is the resource element (k ｓｃ , l ｓｙｍ It may also be called the frequency domain index k. ｓｃ It ranges from 0 to N μ ＲＢ N ＲＢ ｓｃ It represents one of the values ​​of -1. μ ＲＢ This may be the number of resource blocks given for the SCS setting μ. μ ＲＢ is, N ｓｉｚｅ，μ ｇｒｉｄ，ｘ It is also acceptable. N ＲＢ ｓｃ This is the number of subcarriers included in the resource block, NＲＢ ｓｃ is 12. The index k in the frequency domain ｓｃ may correspond to the subcarrier index k ｓｃ The index l in the time domain ｓｙｍ may correspond to the OFDM symbol index l ｓｙｍ One or more resource elements may correspond to a physical resource and a complex value (complex-valued modulation symbol). For each of the one or more resource elements corresponding to the physical resource and / or complex value, one or more information bits (information bits for control information, transport blocks, and upper layer parameters) may be mapped.

[0035] FIG. 3 is a schematic diagram showing an example of a resource grid in a subframe according to an aspect of the present embodiment. In the resource grid of FIG. 3, the horizontal axis is the index l in the time domain ｓｙｍ and the vertical axis is the index k in the frequency domain ｓｃ In one subframe, the frequency domain of the resource grid is N μ ＲＢ N ＲＢ ｓｃ includes a plurality of subcarriers. In one subframe, the time domain of the resource grid may include 14·2 μ OFDM symbols. One resource block is configured to include N ＲＢ ｓｃ subcarriers. The time domain of the resource block may correspond to 1 OFDM symbol. The time domain of the resource block may correspond to 14 OFDM symbols. The time domain of the resource block may correspond to one or more slots. The time domain of the resource block may correspond to one subframe.

[0036] Terminal device 1 may be instructed to transmit and receive using only a subset of the resource grid. A subset of the resource grid is also called a BWP, and the BWP may be given based on at least some or all of the parameters of the higher layer and / or DCI. The BWP may also be called a CBP (Carrier Bandwidth Part). Terminal device 1 is not required to be instructed to transmit and receive using the entire set of resource grid. Terminal device 1 may be instructed to transmit and receive using some of the frequency resources in the resource grid. A single BWP may consist of multiple resource blocks in the frequency domain. A single BWP may consist of multiple consecutive resource blocks in the frequency domain. A BWP set for a downlink carrier may also be called a downlink BWP. A BWP set for an uplink carrier may also be called an uplink BWP. A BWP may be a subset of the carrier bandwidth (a subset of the frequency domain in the carrier).

[0037] One or more downlink BWPs may be configured for each serving cell. One or more uplink BWPs may be configured for each serving cell.

[0038] Of the one or more downlink BWPs set for a serving cell, one downlink BWP may be set as the active downlink BWP. A downlink BWP switch may be used to deactivate the active downlink BWP and activate the other inactive downlink BWPs. Switching of downlink BWPs may be controlled by a BWP instruction field included in the downlink control information. Switching of downlink BWPs may also be controlled based on parameters of a higher layer.

[0039] In an active downlink BWP, DL-SCH may be received. In an active downlink BWP, PDCCH may be monitored. In an active downlink BWP, PDSCH may be received.

[0040] In an inactive downlink BWP, DL-SCH does not need to be received. In an inactive downlink BWP, PDCCH does not need to be monitored. CSI for an inactive downlink BWP does not need to be reported.

[0041] Of the one or more downlink BWPs set for a serving cell, two or more downlink BWPs do not need to be set as active downlink BWPs.

[0042] Of the one or more uplink BWPs configured for a serving cell, one uplink BWP may be set as the active uplink BWP. The uplink BWP switch is used to deactivate the active uplink BWP and activate the other inactive uplink BWPs. Uplink BWP switching may be controlled by a BWP instruction field included in the downlink control information. Uplink BWP switching may also be controlled based on higher-layer parameters.

[0043] In an active uplink BWP, UL-SCH may be transmitted. In an active uplink BWP, PUCCH may be transmitted. In an active uplink BWP, PRACH may be transmitted. In an active uplink BWP, SRS may be transmitted.

[0044] In an inactive uplink BWP, UL-SCH does not need to be transmitted. In an inactive uplink BWP, PUCCH does not need to be transmitted. In an inactive uplink BWP, PRACH does not need to be transmitted. In an inactive uplink BWP, SRS does not need to be transmitted.

[0045] Of the one or more uplink BWPs set for a serving cell, two or more uplink BWPs do not need to be set as active uplink BWPs. In other words, for a serving cell that includes uplink BWPs, at least one active uplink BWP is sufficient.

[0046] Higher-layer parameters are parameters included in the higher-layer signals. Higher-layer signals may be RRC (Radio Resource Control) signaling or MAC CE (Medium Access Control Control Element). Here, higher-layer signals may be RRC layer signals or MAC layer signals. Higher-layer signals may be signals from a layer higher than the physical layer. Note that higher-layer parameters provided by RRC layer signals may be notified from base station device 3 to terminal device 1 and set. Higher-layer parameters provided by RRC layer signals may also be called RRC parameters or RRC information elements (IE).

[0047] The upper layer signal may be common RRC signaling. The common RRC signaling may have at least some or all of the following features C1 to C3: C1) Mapped to a BCCH logical channel or a CCCH logical channel; C2) Includes at least a ReconfigurationWithSync information element; C3) Mapped to a PBCH.

[0048] The ReconfigurationWithSync information element may include information indicating settings commonly used in the serving cell. These settings may include at least the PRACH settings. The PRACH settings may indicate at least one or more random access preamble indices. The PRACH settings may also indicate at least the PRACH time / frequency resources.

[0049] Common RRC signaling may include at least common RRC parameters. Common RRC parameters may be cell-specific parameters used commonly within a serving cell.

[0050] The upper layer signal may be dedicated RRC signaling. The dedicated RRC signaling may have at least some or all of the following features D1 to D2: D1) Mapped to a DCCH logical channel; D2) Does not include ReconfigurationWithSync information elements.

[0051] For example, MIBs (Master Information Blocks) and SIBs (System Information Blocks) may be included in the common RRC signaling. Also, upper-layer messages that are mapped to DCCH logical channels and include at least a ReconfigurationWithSync information element may be included in the common RRC signaling. Furthermore, upper-layer messages that are mapped to DCCH logical channels and do not include a ReconfigurationWithSync information element may be included in the dedicated RRC signaling. Note that MIBs and SIBs may be collectively referred to as system information.

[0052] Furthermore, a higher-layer parameter that includes one or more higher-layer parameters may be referred to as an information element (IE). Also, a higher-layer parameter and / or an IE that includes one or more higher-layer parameters may be referred to as a message (higher-layer message, RRC message), an information block (IB), or system information.

[0053] The SIB may include at least the SSB time index. The SIB may include at least information related to the PRACH resource. The SIB may include at least information related to the initial connection setup.

[0054] The ReconfigurationWithSync information element may include at least information related to the PRACH resource. The ReconfigurationWithSync information element may include at least information related to the initial connection setup.

[0055] Dedicated RRC signaling may include at least dedicated RRC parameters. Dedicated RRC parameters may be parameters used exclusively for terminal device 1 (UE-specific). Dedicated RRC signaling may include at least common RRC parameters.

[0056] Common RRC parameters and dedicated RRC parameters may also be referred to as higher-level parameters.

[0057] The following describes various aspects of this embodiment of physical channels and physical signals.

[0058] An uplink physical channel may correspond to a set of resource elements that carry information generated in the upper layers. An uplink physical channel is a physical channel used in the uplink carrier. In a wireless communication system according to one aspect of this embodiment, at least some or all of the following uplink physical channels are used: • PUCCH (Physical Uplink Control Channel) • PUSCH (Physical Uplink Shared Channel) • PRACH (Physical Random Access Channel)

[0059] PUCCH may be used to transmit uplink control information (UCI). Uplink control information includes some or all of the HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement) information corresponding to channel status information (CSI), scheduling requests (SR), and transport blocks (TB). TB may also be referred to as MAC PDU (Medium Access Control Protocol Data Unit), DL-SCH (Downlink-Shared Channel), or PDSCH (Physical Downlink Shared Channel).

[0060] A PUCCH may contain multiple uplink control information of one or more types. The multiplexed PUCCH may be transmitted. That is, a PUCCH may contain multiple HARQ-ACKs, multiple CSIs, multiple SRs, HARQ-ACKs and CSIs, HARQ-ACKs and SRs, or other types of UCIs.

[0061] HARQ-ACK information may include at least one HARQ-ACK bit corresponding to a TB. The HARQ-ACK bit may indicate an ACK (acknowledgement) or NACK (negative-acknowledgement) corresponding to the TB. ACK may be a value indicating that the decoding of the TB has been successfully completed. NACK may be a value indicating that the decoding of the TB has not been successfully completed. HARQ-ACK information may include at least one HARQ-ACK codebook containing one or more HARQ-ACK bits. The HARQ-ACK bit corresponding to one or more TBs may correspond to a PDSCH containing the one or more TBs.

[0062] The HARQ-ACK bit may indicate an ACK or NACK corresponding to one CBG (Code Block Group) contained in the TB. The HARQ-ACK may also be referred to as HARQ feedback, HARQ information, or HARQ control information.

[0063] The SR bit may be used to request a PUSCH resource for an initial transmission. The SR may also be used to request a UL-SCH resource for a new transmission. The SR bit may be used to indicate either a positive SR or a negative SR. When the SR bit indicates a positive SR, this may also be referred to as "a positive SR is transmitted." A positive SR may indicate that terminal device 1 is requesting a PUSCH resource for an initial transmission. A positive SR may indicate that an SR is triggered by a higher layer. A positive SR may be transmitted when instructed to transmit an SR by a higher layer. When the SR bit indicates a negative SR, this may also be referred to as "a negative SR is transmitted." A negative SR may indicate that terminal device 1 is not requesting a PUSCH resource for an initial transmission. A negative SR may indicate that an SR is not triggered by a higher layer. A negative SR may be sent if the higher layer does not instruct the transmission of an SR.

[0064] The SR bit may be used to indicate either a positive SR or a negative SR for one or more SR configurations. Each of these SR configurations may correspond to one or more logical channels. A positive SR for a given SR configuration may be a positive SR for one or all of the one or more logical channels corresponding to that SR configuration. A negative SR may not correspond to any particular SR configuration. The indication of a negative SR may mean that a negative SR is indicated for all SR configurations.

[0065] The SR setting may also be an SR-ID (Scheduling Request ID). The SR-ID may be provided by a parameter at a higher level.

[0066] The CSI may include at least some or all of the Channel Quality Index (CQI), Precoder Matrix Index (PMI), and Rank Index (RI). The CQI is an index related to channel quality (e.g., propagation strength), the PMI is an index indicating the precoder, and the RI is an index indicating the transmit rank (or transmit layer number).

[0067] The CSI may be given based at least on receiving a physical signal (e.g., CSI-RS) used for channel measurement. The CSI may include a value selected by the terminal device 1. The CSI may be selected by the terminal device 1 based at least on receiving a physical signal used for channel measurement. Channel measurement may include interference measurement. The CSI-RS may be set based on the CSI-RS setting or based on the SSB setting.

[0068] A CSI report is a report of CSI. A CSI report may include CSI Part 1 and / or CSI Part 2. CSI Part 1 may consist of at least wideband channel quality information (wideband CQI), wideband precoder matrix index (wideband PMI), and some or all of the RI. The number of bits of CSI Part 1 multiplexed into PUCCH may be a predetermined value regardless of the value of the RI in the CSI report. The number of bits of CSI Part 2 multiplexed into PUCCH may be given based on the value of the RI in the CSI report. The rank index of a CSI report may be the value of the rank index used to calculate the CSI report. The RI of the CSI information may be the value indicated by the RI field included in the CSI report.

[0069] The set of RIs permitted in a CSI report may be some or all of 1 through 8. Furthermore, the set of RIs permitted in a CSI report may be given based at least on the higher-level parameter RankRestriction. If the set of RIs permitted in a CSI report contains only one value, the RI in the CSI report may be that single value.

[0070] Priorities may be assigned to CSI reports. The priority of a CSI report may be based on at least some or all of the settings regarding the time domain behavior (processing) of the CSI report, the type of content of the CSI report, the index of the CSI report, and / or some of the indexes of the serving cells in which the measurement of the CSI report is set.

[0071] The settings for the time-domain behavior (processing) of CSI reporting may indicate whether the CSI reporting is performed aperiodicly, semi-persistently, or quasi-statically.

[0072] The content type of the CSI report may indicate whether or not the CSI report includes Layer 1 RSRP (Reference Signals Received Power).

[0073] Layer 1 refers to the physical layer, and may be a layer that performs processing such as the physical layer processing unit, wireless transmission unit, transmission unit, and / or wireless reception unit, reception unit, etc. Layers above Layer 1 include the MAC layer, RRC layer, and upper layer processing unit. For example, Layer 2 may be the MAC layer, RLC layer, PDCP layer, MAC layer processing unit, RLC layer processing unit, or PDCP layer processing unit. Layer 3 may be the RRC layer or RRC layer processing unit.

[0074] PUSCH is used to transmit TB (MAC PDU, UL-SCH). PUSCH may be used to transmit at least some or all of the TB, HARQ-ACK information, CSI, and SR. PUSCH is used to transmit Random Access Message 3 (Message 3 (Msg3)) corresponding to RAR (Msg2) and / or RAR Grant in the Random Access Procedure. Note that TB may correspond to both the uplink and downlink, respectively. That is, PUSCH may be used to transmit TB for the uplink. PDSCH may be used to transmit TB for the downlink.

[0075] PRACH is used at least to transmit a random access preamble (random access message 1, message 1 (Msg1)). PRACH may be used at least to indicate some or all of the initial connection establishment procedure, handover procedure, connection re-establishment procedure, initial access procedure, synchronization (timing adjustment) for transmitting PUSCH, and request for resources for PUSCH. The random access preamble may be used to notify the base station device 3 of an index (random access preamble index) provided by the upper layer of terminal device 1.

[0076] A random access preamble may be provided by cyclically shifting a Zadoff-Chu sequence corresponding to a physical root sequence index u. The Zadoff-Chu sequence may be generated based on the physical root sequence index u. Multiple random access preambles may be defined in a single serving cell. A random access preamble may be identified at least based on its index. Different random access preambles corresponding to different indices of the random access preamble may correspond to different combinations of the physical root sequence index u and the cyclic shift. The physical root sequence index u and the cyclic shift may be provided at least based on information contained in the system information. The physical root sequence index u may be an index that identifies the sequence contained in the random access preamble. A random access preamble may be identified at least based on the physical root sequence index u.

[0077] In Figure 1, the following uplink physical signals are used in uplink wireless communication. Uplink physical signals do not necessarily have to be used to transmit information output from higher layers, but they are used by the physical layer. • UL DMRS (Uplink Demodulation Reference Signal) • SRS (Sounding Reference Signal) • UL PTRS (Uplink Phase Tracking Reference Signal)

[0078] UL DMRS is associated with the transmission of PUSCH and / or PUCCH. UL DMRS is multiplexed with PUSCH or PUCCH. Base station device 3 may use UL DMRS to perform propagation path correction for PUSCH or PUCCH. Hereinafter, transmitting PUSCH and the UL DMRS associated with PUSCH together will be simply referred to as "transmitting PUSCH". Hereinafter, transmitting PUCCH and the UL DMRS associated with PUCCH together will be simply referred to as "transmitting PUCCH". UL DMRS associated with PUSCH is also referred to as UL DMRS for PUSCH. UL DMRS associated with PUCCH is also referred to as UL DMRS for PUCCH.

[0079] SRS does not have to be associated with the transmission of PUSCH or PUCCH. Base station device 3 may use SRS for measuring channel status. SRS may be transmitted at the end of a subframe in an uplink slot, or in a predetermined number of OFDM symbols from the end.

[0080] UL PTRS may be a reference signal used for phase tracking. UL PTRS may be associated with a UL DMRS group that includes at least one antenna port used in one or more UL DMRS. The association between UL PTRS and a UL DMRS group may mean that some or all of the antenna ports of the UL PTRS and some of the antenna ports included in the UL DMRS group are at least QCL. UL DMRS groups may be identified based at least on the antenna port with the smallest index among the UL DMRS included in the UL DMRS group. UL PTRS may be mapped to the antenna port with the smallest index among one or more antenna ports to which a codeword is mapped. UL PTRS may be mapped to the first layer if a codeword is mapped to at least the first and second layers. UL PTRS may not be mapped to the second layer. The index of the antenna port to which the UL PTRS is mapped may be given based at least on downlink control information.

[0081] In Figure 1, the following downlink physical channels are used in the wireless communication of the downlink from base station device 3 to terminal device 1. Downlink physical channels are used by the physical layer to transmit information output from the upper layers. • PBCH (Physical Broadcast Channel) • PDCCH (Physical Downlink Control Channel) • PDSCH (Physical Downlink Shared Channel)

[0082] A PBCH is used to transmit an MIB and / or a PBCH payload. The PBCH payload may include at least information indicating an index related to the SSB transmission timing (SSB occasion). The PBCH payload may include information related to the SSB identifier (index). The PBCH may be transmitted based on a predetermined transmission interval. The PBCH may be transmitted at 80 millisecond (ms) intervals. The PBCH may be transmitted at 160 ms intervals. The contents of the information contained in the PBCH may be updated every 80 ms. Some or all of the information contained in the PBCH may be updated every 160 ms. The PBCH may consist of 288 subcarriers. The PBCH may consist of 2, 3, or 4 OFDM symbols. The MIB may include information related to the SSB identifier (index). The MIB may include information indicating at least part of the slot number, subframe number, and / or radio frame number from which the PBCH is transmitted.

[0083] PDCCH is used at least for transmitting downlink control information (DCI). PDCCH may transmit including at least DCI. PDCCH may transmit including DCI. DCI may also be called DCI format. DCI may indicate at least either a downlink grant or an uplink grant. The DCI format used for scheduling PDSCH may also be called downlink DCI format and / or downlink grant. The DCI format used for scheduling PUSCH may also be called uplink DCI format and / or uplink grant. Downlink grant may also be called downlink assignment or downlink allocation. The uplink DCI format includes part or all of DCI format 0_0 and DCI format 0_1.

[0084] The downlink DCI format includes DCI format 1_0, and parts or all of DCI format 1_1, DCI format 1_2, and DCI format 1_3.

[0085] DCI formats 1_1, 1_2, and 1_3 may include a Transmission configuration indication field. The Transmission configuration indication field may be 0 bits if the upper-layer parameter tci-PresentInDCI is not enabled. Otherwise, it may be set to 3 bits.

[0086] DCI format 2 may include parameters used for PUSCH or PUCCH transmit power control. DCI format 2 includes some or all of DCI format 2_0, DCI format 2_1, DCI format 2_2, DCI format 2_3, DCI format 2_4, DCI format 2_5, DCI format 2_6, DCI format 2_7, DCI format 2_8, and DCI format 2_9.

[0087] DCI format 2_9 may be used to activate or deactivate the cell DTX / DRX settings of one or more serving cells for one or more UEs. DCI format 2_9 may be transmitted with a CRC scrambled by NES-RNTI. DCI format 2_9 consists of some or all of the following information: Block number Cell DTX / DRX indication

[0088] In various embodiments of this model, unless otherwise specified, the number of resource blocks (RBs) indicates the number of resource blocks in the frequency domain. The resource block index is assigned in ascending order from resource blocks mapped to lower frequency domains to resource blocks mapped to higher frequency domains. Furthermore, "resource block" is a general term encompassing both common resource blocks and physical resource blocks.

[0089] A single physical channel may be mapped to a single serving cell. A single physical channel may be mapped to a single CBP configured on a single carrier contained within a single serving cell.

[0090] Terminal device 1 is provided with one or more control resource sets (CORESETs). Terminal device 1 monitors PDCCH in one or more CORESETs.

[0091] CORESET may represent a time-frequency domain to which one or more PDCCHs may be mapped. CORESET may also represent a domain to which terminal device 1 monitors PDCCHs. CORESET may consist of localized resources. CORESET may consist of distributed resources.

[0092] In the frequency domain, the unit of CORESET mapping may be a resource block (RB). For example, in the frequency domain, the unit of CORESET mapping may be 6 resource blocks. That is, CORESET mapping in the frequency domain may be 6RB × n (where n is 1, 2, ...). In the time domain, the unit of CORESET mapping may be an OFDM symbol. For example, in the time domain, the unit of CORESET mapping may be one OFDM symbol.

[0093] The frequency domain of CORESET may be given based at least on the signals of the upper layers and / or DCI.

[0094] The time domain of CORESET may be given based at least on the signals of the upper layer and / or DCI.

[0095] A CORESET may be a Common CORESET. A Common CORESET may be a CORESET that is set in common for multiple terminal devices 1. A Common CORESET may be provided based on at least some or all of the MIB, SIB, Common RRC signaling, and cell IDs. For example, the time resources and / or frequency resources of a CORESET set to monitor the PDCCH used for SIB scheduling may be provided based on at least the MIB.

[0096] A CORESET may be a Dedicated CORESET. A Dedicated CORESET may be a CORESET configured to be used exclusively for terminal device 1. A Dedicated CORESET may be provided at least on the basis of dedicated RRC signaling.

[0097] The set of PDCCH candidates monitored by terminal device 1 may be defined in terms of the search domain. In other words, the set of PDCCH candidates monitored by terminal device 1 may be given by the search domain.

[0098] The search region may consist of one or more PDCCH candidates with one or more aggregation levels (AL). The aggregation level of a PDCCH candidate may indicate the number of CCEs that constitute the PDCCH.

[0099] Terminal device 1 may monitor at least one or more search spaces in slots where DRX (Discontinuous reception) is not set. DRX may be provided based at least on parameters of the upper layer. Terminal device 1 may monitor at least one or more search space sets in slots where DRX is not set.

[0100] A search area set may consist of at least one or more search areas. The type of search area set may be any of the following: Type 0 PDCCH common search space, Type 0 APDCCH common search space, Type 1 PDCCH common search space, Type 2 PDCCH common search space, Type 3 PDCCH common search space, and / or UE individual PDCCH search space.

[0101] The Type 0 PDCCH common search area, Type 0 APDCCH common search area, Type 1 PDCCH common search area, Type 2 PDCCH common search area, and Type 3 PDCCH common search area may also be referred to as CSS (Common Search Space). The UE-specific PDCCH search area may also be referred to as USS (UE-specific Search Space).

[0102] Each of the search area sets may be associated with one control resource set. Each of the search area sets may be contained in at least one control resource set. Each of the search area sets may be given an index of the control resource set associated with that search area set.

[0103] The higher-level parameter SearchSpace may be used to set one or more search areas as a single set. The one or more search areas set by SearchSpace may be called a search area set.

[0104] The Type 0 PDCCH common search area may be used for the DCI format with a Cyclic Redundancy Check (CRC) sequence scrambled by SI-RNTI (System Information-Radio Network Temporary Identifier). The Type 0 PDCCH common search area may be set based on at least four bits of the LSB (Least Significant Bits) of the upper-layer parameter PDCCH-ConfigSIB1. The upper-layer parameter PDCCH-ConfigSIB1 may be included in the MIB. The Type 0 PDCCH common search area may be set based on at least the upper-layer parameter SearchSpaceZero. The interpretation of the bits of the upper-layer parameter SearchSpaceZero may be the same as the interpretation of the four bits of the LSB of the upper-layer parameter PDCCH-ConfigSIB1. The setting of the Type 0 PDCCH common search area may be provided based at least on the upper layer parameter SearchSpaceSIB1. The upper layer parameter SearchSpaceSIB1 may be included in the upper layer parameter PDCCH-ConfigCommon. The PDCCH detected in the Type 0 PDCCH common search area may be used at least for scheduling the PDCCH transmitted including SIB1. SIB1 is a type of SIB. SIB1 may include scheduling information for SIBs other than SIB1. Terminal device 1 may receive the upper layer parameter PDCCH-ConfigCommon in EUTRA. Terminal device 1 may receive the upper layer parameter PDCCH-ConfigCommon in MCG. These common search areas may be referred to as the Type 0 PDCCHCSS set.

[0105] The Type 0 APDCH common search area may be used at least for DCI formats with a Cyclic Redundancy Check (CRC) sequence scrambled by SI-RNTI (System Information-Radio Network Temporary Identifier). The setting of the Type 0a APDCH common search area may be given at least based on the upper layer parameter SearchSpaceOtherSystemInformation. The upper layer parameter SearchSpaceOtherSystemInformation may be included in SIB1. The upper layer parameter SearchSpaceOtherSystemInformation may be included in the upper layer parameter PDCCH-ConfigCommon. PDCCHs detected in the Type 0 APDCH common search area may be used at least for scheduling PDSCHs transmitted with SIBs other than SIB1. These common search regions may be referred to as the Type 0APDCCHCSS set.

[0106] The Type 1 PDCCH common search area may be used at least for a DCI format with a CRC sequence scrambled by RA-RNTI (Random Access-Radio Network Temporary Identifier) ​​and / or a CRC sequence scrambled by TC-RNTI (Temporary Common-Radio Network Temporary Identifier). RA-RNTI may be provided at least based on the time / frequency resources of the random access preamble transmitted by terminal device 1. TC-RNTI may be provided by a PDSCH (also referred to as Random Access Message 2, Message 2 (Msg2), or Random Access Response (RAR)) scheduled in a DCI format with a CRC sequence scrambled by RA-RNTI. The Type 1 PDCCH common search area may be provided at least based on the upper-layer parameter ra-SearchSpace. The upper-layer parameter ra-SearchSpace may be included in SIB1. The higher-level parameter ra-SearchSpace may be included in the higher-level parameter PDCCH-ConfigCommon. These common search areas may be referred to as the type 1 PDCCHCSS set.

[0107] A Type 2 PDCCH common search area may be used for a DCI format with a CRC sequence scrambled by P-RNTI (Paging-Radio Network Temporary Identifier). P-RNTI may be used at least for transmitting a DCI format containing information notifying changes to the SIB. The Type 2 PDCCH common search area may be provided based at least on the higher-layer parameter PagingSearchSpace. The higher-layer parameter PagingSearchSpace may be included in SIB1. The higher-layer parameter PagingSearchSpace may be included in the higher-layer parameter PDCCH-ConfigCommon. These common search areas may be referred to as the Type 2 PDCCHCSS set.

[0108] The Type 3 PDCCH common search region may be used for a DCI format with a CRC sequence scrambled by C-RNTI (Cell-Radio Network Temporary Identifier). C-RNTI may be provided based at least on PDSCH (Random Access Message 4, Message 4 (Msg4), or Contention Resolution) scheduled by a DCI format with a CRC sequence scrambled by TC-RNTI. The Type 3 PDCCH common search region may also be a set of search regions provided when the upper-layer parameter SearchSpaceType is set to common. These common search regions may be referred to as the Type 3 PDCCHCSS set.

[0109] The UE individual PDCCH search regions may be used for the DCI format with a CRC sequence scrambled by C-RNTI. These UE individual search regions may be referred to as the PDCCHUSS set.

[0110] When C-RNTI is provided to terminal device 1, the Type 0 PDCCH common search area, Type 0 APDCCH common search area, Type 1 PDCCH common search area, and / or Type 2 PDCCH common search area may be used for the DCI format with a CRC sequence scrambled with C-RNTI.

[0111] When C-RNTI is provided to terminal device 1, the search region set provided based on at least one of the upper layer parameters PDCCH-ConfigSIB1, SearchSpaceZero, SearchSpaceSIB1, SearchSpaceOtherSystemInformation, ra-SearchSpace, PagingSearchSpace, or SearchSpace may be used for the DCI format with a CRC sequence scrambled by C-RNTI.

[0112] A common coreset may include at least one or both of CSS and USS. A dedicated coreset may include at least one or both of CSS and USS.

[0113] The physical resources in the search area are composed of Control Channel Elements (CCEs). A CCE is composed of six Resource Element Groups (REGs). A REG may consist of one OFDM symbol of one Physical Resource Block (PRB). In other words, a REG may consist of twelve Resource Elements (REs). A PRB may also simply be called a Resource Block (RB).

[0114] PDSCH may be used at least to transmit TB. It may also be used at least to transmit Random Access Message 2 (RAR, Msg2). Furthermore, PDSCH may be used at least to transmit system information, including parameters used for initial access.

[0115] In Figure 1, the following downlink physical signals are used in downlink wireless communication. Downlink physical signals do not necessarily have to be used to transmit information output from higher layers, but they are used by the physical layer. • Synchronization signal • DL DMRS (Downlink DeModulation Reference Signal) • CSI-RS (Channel State Information-Reference Signal) • DL PTRS (Downlink Phase Tracking Reference Signal) • TRS (Tracking Reference Signal)

[0116] The synchronization signal is used by terminal device 1 to synchronize the downlink in the frequency domain and / or time domain. The synchronization signal includes PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal).

[0117] An SSB (SS / PBCH block) comprises at least some or all of a PSS, SSS, and PBCH. The antenna ports of each of the PSS, SSS, and PBCH included in the SS block may be the same. The PSS, SSS, and PBCH included in the SSB may be mapped to consecutive OFDM symbols. The CP settings of each of the PSS, SSS, and PBCH included in the SSB may be the same. The SCS setting μ may be the same value applied to each of the PSS, SSS, and PBCH included in the SSB.

[0118] DL DMRS is associated with the transmission of PBCH, PDCCH, and / or PDSCH. DL DMRS is multiplexed to PBCH, PDCCH, and / or PDSCH. Terminal device 1 may use the PBCH, PDCCH, or PDSCH and the corresponding DL DMRS to perform propagation path correction for the PBCH, PDCCH, or PDSCH. Hereinafter, when a PBCH and its associated DL DMRS are transmitted together, it may be referred to as "the PBCH is transmitted." When a PDCCH and its associated DL DMRS are transmitted together, it may simply be referred to as "the PDCCH is transmitted." When a PDSCH and its associated DL DMRS are transmitted together, it may simply be referred to as "the PDSCH is transmitted." DL DMRS associated with a PBCH may also be referred to as DL DMRS for PBCH. DL DMRS associated with PDSCH may also be referred to as DL DMRS for PDSCH. DL DMRS associated with PDCCH may also be referred to as DL DMRS associated with PDCCH.

[0119] DL DMRS may be a reference signal individually configured on terminal device 1. The DL DMRS sequence may be given based on at least parameters individually configured on terminal device 1. The DL DMRS sequence may be given based on at least UE-specific values ​​(e.g., C-RNTI). DL DMRS may be transmitted separately for PDCCH and / or PDSCH.

[0120] CSI-RS may be a signal used at least to calculate CSI. CSI-RS may also be used to measure RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality). The CSI-RS pattern assumed by terminal device 1 may be given at least by higher-level parameters.

[0121] PTRS may be a signal used at least for phase noise compensation. The PTRS pattern assumed by terminal device 1 may be given at least based on higher layer parameters and / or DCI.

[0122] A DL PTRS may be associated with a DL DMRS group that includes at least one antenna port used by a DL DMRS. The association between a DL PTRS and a DL DMRS group may be such that at least some or all of the antenna ports of the DL PTRS and the antenna ports included in the DL DMRS group are QCLs. A DL DMRS group may be identified based at least on the antenna port with the smallest index among the DL DMRS included in the DL DMRS group.

[0123] The TRS may be a signal used at least for time and / or frequency synchronization. The TRS pattern assumed by the terminal device may be given at least based on higher-layer parameters and / or DCI.

[0124] Downlink physical channels and downlink physical signals may also be referred to as downlink signals. Uplink physical channels and uplink physical signals may also be referred to as uplink signals. Downlink signals and uplink signals may be collectively referred to as physical signals or signals. Downlink physical channels and uplink physical channels may be collectively referred to as physical channels. In the downlink, physical signals may include some or all of SSB, PDCCH (CORESET), PDSCH, DL DMRS, CSI-RS, DL PTRS, and TRS. In the uplink, physical signals may include some or all of PRACH, PUCCH, PUSCH, UL DMRS, UL PTRS, and SRS. Physical signals may also include signals other than those described above. In other words, physical signals may include one or more types of physical channels and / or physical signals, or one or more physical channels and / or physical signals.

[0125] BCH (Broadcast Channel), UL-SCH (Uplink-Shared Channel), and DL-SCH (Downlink-Shared Channel) are transport channels. Channels used in the Media Access Control (MAC) layer may also be called transport channels. The unit of transport channel used in the MAC layer may also be called TB or MAC PDU. HARQ control is performed for each TB in the MAC layer. A TB is the unit of data that the MAC layer delivers to the physical layer. In the physical layer, TBs are mapped to codewords, and modulation processing is performed for each codeword.

[0126] The base station device 3 and the terminal device 1 exchange (send and receive) higher layer signals at the higher layer. For example, the base station device 3 and the terminal device 1 may send and receive RRC signaling (RRC messages, RRC information, RRC parameters, RRC information elements) at the Radio Resource Control (RRC) layer. Alternatively, the base station device 3 and the terminal device 1 may send and receive MAC CE (Control Element) at the MAC layer. Here, RRC signaling and / or MAC CE are also referred to as higher layer signaling.

[0127] PUSCH and PDSCH may be used at least to transmit RRC signaling and / or MAC CE. Here, the RRC signaling transmitted by PDSCH from base station device 3 may be a common signaling to multiple terminal devices 1 within a serving cell. A common signaling to multiple terminal devices 1 within a serving cell may also be called a common RRC signaling. The RRC signaling transmitted by PDSCH from base station device 3 may be a dedicated signaling to a particular terminal device 1 (may also be called a dedicated signaling or UE specific signaling). A dedicated signaling to a terminal device 1 may also be called a dedicated RRC signaling. Upper layer parameters specific to a serving cell may be transmitted using a common signaling to multiple terminal devices 1 within the serving cell, or a dedicated signaling to a particular terminal device 1. UE-specific upper-layer parameters may be transmitted to a terminal device 1 using dedicated signaling.

[0128] BCCH (Broadcast Control Channel), CCCH (Common Control Channel), and DCCH (Dedicated Control Channel) are logical channels. For example, BCCH is a higher-layer channel used to transmit MIB (Media Indicator Block). CCCH (Common Control Channel) is a higher-layer channel used to transmit common information to multiple terminal devices 1. Here, CCCH may be used, for example, for terminal devices 1 that are not connected via RRC (Remote Control Network). DCCH (Dedicated Control Channel) is a higher-layer channel used to transmit dedicated control information to terminal devices 1. Here, DCCH may be used, for example, for terminal devices 1 that are connected via RRC (Remote Control Network).

[0129] BCCH in the logical channel may be mapped to BCH, DL-SCH, or UL-SCH in the transport channel. CCCH in the logical channel may be mapped to DL-SCH or UL-SCH in the transport channel. DCCH in the logical channel may be mapped to DL-SCH or UL-SCH in the transport channel.

[0130] UL-SCH in the transport channel may be mapped to PUSCH in the physical channel. DL-SCH in the transport channel may be mapped to PDSCH in the physical channel. BCH in the transport channel may be mapped to PBCH in the physical channel.

[0131] The following describes an example of the configuration of a terminal device 1 according to one aspect of this embodiment.

[0132] Figure 4 is a schematic block diagram showing the configuration of a terminal device 1 according to one embodiment of this model. As shown in the figure, the terminal device 1 is composed of a wireless transceiver unit 10 and a higher-layer processing unit 14. The wireless transceiver unit 10 is composed of at least part or all of an antenna unit 11, an RF (Radio Frequency) unit 12, and a baseband unit 13. The higher-layer processing unit 14 is composed of at least part or all of a media access control layer processing unit 15 and a wireless resource control layer processing unit 16. The wireless transceiver unit 10 may also be referred to as a transmitter, receiver, physical layer processing unit, and / or lower-layer processing unit.

[0133] The upper layer processing unit 14 outputs the uplink data (TB, UL-SCH) generated by user operations, etc., to the wireless transceiver unit 10. The upper layer processing unit 14 performs processing at the MAC layer, Packet Data Integration Protocol (PDCP) layer, Wireless Link Control (RLC) layer, and RRC layer.

[0134] The media access control layer processing unit 15, which is part of the upper layer processing unit 14, performs MAC layer processing.

[0135] The wireless resource control layer processing unit 16, located within the upper layer processing unit 14, performs RRC layer processing. The wireless resource control layer processing unit 16 manages various setting information / parameters of its own device. The wireless resource control layer processing unit 16 sets various setting information / parameters based on the upper layer signals received from the base station device 3. That is, the wireless resource control layer processing unit 16 sets various setting information / parameters based on information indicating the various setting information / parameters received from the base station device 3. These parameters may be upper layer parameters and / or information elements.

[0136] The wireless transceiver unit 10 performs physical layer processing such as modulation, demodulation, encoding, and decoding. The wireless transceiver unit 10 separates, demodulates, and decodes the received physical signal and outputs the decoded information to the upper layer processing unit 14. These processes may also be called reception processing. The wireless transceiver unit 10 generates a physical signal (uplink signal) by modulating, encoding, and generating a baseband signal (conversion to a time-continuous signal) the data and transmits it to the base station device 3. These processes may also be called transmission processing.

[0137] The RF unit 12 converts the signal received via the antenna unit 11 into a baseband signal (down-converts) by quadrature demodulation and removes unwanted frequency components. The RF unit 12 outputs the processed analog signal to the baseband unit.

[0138] The baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal. The baseband unit 13 removes the portion corresponding to the CP from the converted digital signal, and performs a Fast Fourier Transform (FFT) on the signal from which the CP has been removed to extract the signal in the frequency domain.

[0139] The baseband unit 13 performs an inverse fast Fourier transform (IFFT) on the data to generate OFDM symbols, adds CP to the generated OFDM symbols to generate a baseband digital signal, and converts the baseband digital signal into an analog signal. The baseband unit 13 outputs the converted analog signal to the RF unit 12.

[0140] The RF unit 12 uses a low-pass filter to remove unwanted frequency components from the analog signal input from the baseband unit 13, upconverts the analog signal to the carrier frequency, and transmits it via the antenna unit 11. The RF unit 12 also amplifies the power. The RF unit 12 may also have a function to control the transmission power. The RF unit 12 is also referred to as the transmission power control unit.

[0141] The following describes an example of the configuration of a base station device 3 according to one aspect of this embodiment.

[0142] Figure 5 is a schematic block diagram showing the configuration of a base station device 3 according to one aspect of this embodiment. As shown in the figure, the base station device 3 is composed of a wireless transceiver unit 30 and a higher layer processing unit 34. The wireless transceiver unit 30 is composed of an antenna unit 31, an RF unit 32, and a baseband unit 33. The higher layer processing unit 34 is composed of a media access control layer processing unit 35 and a wireless resource control layer processing unit 36. The wireless transceiver unit 30 is also referred to as the transmitting unit, receiving unit, or physical layer processing unit.

[0143] The upper layer processing unit 34 performs processing on the MAC layer, PDCP layer, RLC layer, and RRC layer.

[0144] The media access control layer processing unit 35, which is part of the upper layer processing unit 34, performs MAC layer processing.

[0145] The wireless resource control layer processing unit 36, located in the upper layer processing unit 34, performs RRC layer processing. The wireless resource control layer processing unit 36 ​​generates or acquires downlink data (TB, DL-SCH), system information, RRC messages, MAC CE, etc., which are placed on the PDSCH, from the upper layer node and outputs them to the wireless transceiver unit 30. The wireless resource control layer processing unit 36 ​​also manages various setting information / parameters for each terminal device 1. The wireless resource control layer processing unit 36 ​​may set various setting information / parameters for each terminal device 1 via signals from the upper layer. That is, the wireless resource control layer processing unit 36 ​​transmits / notifies information indicating various setting information / parameters.

[0146] The basic functions of the wireless transceiver 30 are the same as those of the wireless transceiver 10, so a detailed explanation is omitted. The wireless transceiver 30 transmits the physical signals it generates to the terminal device 1 (i.e., it performs the transmission process). The wireless transceiver 30 also performs the reception process for the physical signals it receives.

[0147] The media access control layer processing units 15 and / or 35 may be referred to as MAC entities.

[0148] Each of the parts designated 10 to 16 in the terminal device 1 may be configured as a circuit. Each of the parts designated 30 to 36 in the base station device 3 may be configured as a circuit. Some or all of the parts designated 10 to 16 in the terminal device 1 may be configured as a memory and a processor connected to the memory. Some or all of the parts designated 30 to 36 in the base station device 3 may be configured as a memory and a processor connected to the memory. Various embodiments (operations, processes) according to this embodiment may be implemented (performed) in the memory and the processor connected to the memory included in the terminal device 1 and / or the base station device 3.

[0149] In carrier aggregation (CA), two or more component carrier carriers (CCs) are aggregated. A UE may receive or transmit simultaneously on one or more CCs, depending on its capabilities. A UE with one timing advance capability for CA may receive and / or transmit simultaneously on multiple CCs corresponding to multiple serving cells (multiple serving cells grouped into one TAG) that share the same timing advance. A UE with multiple timing advance capabilities for CA may receive and / or transmit simultaneously on multiple CCs corresponding to multiple serving cells (multiple serving cells grouped into multiple TAGs) that have different timing advances. NG-RAN ensures that each TAG contains at least one serving cell. A UE that does not support CA may receive on one CC and transmit on one CC corresponding to only one serving cell (one serving cell within one TAG).

[0150] When a CA is configured, the UE has only one RRC connection to the network. During RRC connection establishment / re-establishment / handover, one serving cell provides NAS mobility information, and during RRC connection re-establishment / handover, one serving cell provides security input. This cell is referred to as the Primary Cell (PCell). Depending on the UE's capabilities, Secondary Cells (SCells) may be configured to form a set of PCells and serving cells. The set of serving cells configured for the UE consists of one PCell and one or more SCells. Reconfiguration, addition, and deletion of SCells are performed by RRC. In the case of intra-NR handover and connection resumption from RRC_INACTIVE, the network may also add, delete, retain, or reconfigure SCells for use in the target PCell. When adding a new SCell, dedicated RRC signaling is used to transmit all system information required by the SCell. In other words, during connected mode, the UE does not need to obtain broadcast system information directly from SCell.

[0151] RRC may support the states RRC_IDLE, RRC_INACTIVE, and RRC_CONNECTED.

[0152] SSB can be classified into Always-on SSB and On-demand SSB. In Always-on SSB, SSB may be transmitted periodically from the base station equipment. In On-demand SSB, SSB may be transmitted from the base station equipment when SSB transmission is requested. Always-on SSB and On-demand SSB may be referred to simply as SSB without distinction.

[0153] In On-demand SSB, an SSB transmission request may be made using UE WUS (uplink wake-up signaling), cell on / off indication via backhaul, or Scell ​​activation / deactivation signaling. The method for an SSB transmission request may be called a triggering method. In On-demand SSB, an SSB transmission request may be called an SSB transmission request, an SS / PBCH block request, an SSB trigger, or an On-demand SSB trigger. On-demand SSB may be an operation in SCell.

[0154] An SSB transmission (SSB burst) triggered by an On-demand SSB in SCell may behave as follows: The UE may assume that On-demand SSBs are transmitted periodically from a first timing. The UE may assume that On-demand SSBs are transmitted periodically from a first timing until the gNB turns off On-demand SSB transmission. The UE may assume that On-demand SSBs are transmitted between a first timing and a second timing, and that no On-demand SSBs are transmitted after the second timing. The UE may assume that N On-demand SSBs are transmitted after the first timing, and that no On-demand SSBs are transmitted after N On-demand SSBs have been transmitted. The UE may assume that On-demand SSBs are transmitted periodically between a first timing and a second timing, and that On-demand SSBs are transmitted at other transmission cycles after the second timing. Note that an SSB transmission (SSB burst) may contain one or more SS / PBCH blocks.

[0155] In cells that support On-demand SSB in SCell, Always-on SSB does not need to be sent. In cells that support On-demand SSB in SCell, Always-on SSB may be sent periodically.

[0156] In this embodiment, the wireless transceiver 10 may include a wireless receiver, a wireless transmitter, and a processing unit. For example, the wireless receiver may perform signal reception processing, and the wireless transmitter may perform signal transmission processing. For example, the processing unit may perform information judgment and setting, and the processing unit may include processing in the upper layer processing unit 14.

[0157] In this embodiment, an Artificial Intelligence (AI) / Machine Learning (ML) model and / or AI / ML functionality may be applied. The AI / ML model may be a data-driven algorithm that applies AI / ML techniques to generate a set of outputs based on a set of inputs.

[0158] AI / ML models and / or AI / ML functions may be implemented on the terminal device side or the network side. The network-side model may be an AI / ML model in which inference is performed entirely within the network. The UE-side model may be an AI / ML model in which inference is performed entirely within the UE.

[0159] Figure 6 shows an example of an AI / ML functional framework for an NR air interface using terminal and base station equipment.

[0160] As shown in Figure 6, the AI / ML functional framework for the NR air interface includes a series of core functions, including a Data Collection unit 601, a Model Training unit 602, a Management unit 603, an Inference unit 604, and a Model Storage unit 605. The function in the Data Collection unit 601 may be called the Data Collection function. The function in the Model Training unit 602 may be called the Model Training function. The function in the Management unit 603 may be called the Management function. The function in the Inference unit 604 may be called the Inference function. The function in the Model Storage unit 605 may be called the Model Storage function.

[0161] The data collection unit 601 may have the function of providing input data to the model training unit 602, the management unit 603, and the inference unit 604. Specifically, the data collection unit 601 may provide training data to the model training unit 602. In other words, training data refers to the data required as input to the AI / ML model training unit 602. The data collection unit 601 may provide monitoring data to the management unit 603. In other words, monitoring data refers to the input data required for the management of the AI / ML model and AI / ML functions. The data collection unit 601 may provide inference data to the inference unit 604. In other words, inference data refers to the data required as input to the inference unit 604.

[0162] The model training unit 602 is a function that performs training, validation, and testing of AI / ML models, and may generate model performance metrics that can be used as part of the model testing procedure. The model training unit 602 may also be responsible for preparing the data based on the training data provided by the data acquisition function. If there is a model storage unit 605, the trained, validated, and tested AI / ML models may be provided to the model storage function. Furthermore, updated versions of the AI / ML models may also be provided to the model storage unit 605.

[0163] The management unit 603 may be responsible for overseeing the operation (e.g., selection, (de)activation, switching, fallback) and monitoring (e.g., performance) of AI / ML models and AI / ML functions. This function may also be responsible for making decisions to ensure appropriate inference operations based on data received from the data acquisition unit 601 and the inference unit 604.

[0164] The inference unit 604 may be a function that takes data provided by the data acquisition unit 601 (i.e., inference data) as input and provides output from a process that applies an AI / ML model or AI / ML function. The inference unit 604 may also be responsible for preparing the data (e.g., preprocessing, cleaning, formatting, or transforming the data) based on the inference data provided by the data acquisition unit 601, as needed.

[0165] The model storage unit 605 may be a function responsible for storing trained or updated models that can be used to perform inference functions.

[0166] In this embodiment, the functional framework shown in Figure 6 provides a general functional architecture that can be applied to both AI / ML models and AI / ML functions.

[0167] AI / ML models or AI / ML functions need to be developed, deployed, and managed throughout their entire lifecycle. This can be either lifecycle management (LCM) based on AI / ML models or LCM based on AI / ML functions.

[0168] An AI / ML model may be identified by a model ID. The model ID may be a unique ID for the AI / ML model. The model ID may also be a logical ID. A logical AI / ML model refers to a model to which a model ID has been identified and assigned. A logical AI / ML model may be mapped to a physical AI / ML model by its implementation. In other words, the physical AI / ML model refers to the actual implementation of the logical AI / ML model.

[0169] In an AI / ML model-based LCM, models are identified by a network, and the network and / or UE may activate, deactivate, select, or switch individual AI / ML models via model IDs. In this embodiment, the AI / ML model-based LCM may be referred to as a model-ID based LCM.

[0170] AI / ML functionality refers to features defined within AI / ML-enabled features, which are functions that utilize AI / ML. A UE (User Environment) may have one AI / ML model for a single function, or it may have multiple AI / ML models for a single function.

[0171] In an AI / ML function-based LCM, a UE may use UE capability signaling to indicate its supported capabilities to the network. Furthermore, the UE may indicate capabilities applicable for model inference. Upon receiving UE capability signaling, the network may indicate activation, deactivation, fallback, and / or switching of AI / ML capabilities through signaling such as RRC signals, MAC CE, DCI, etc. The exact AI / ML model supporting a particular capability may not be identified by the network.

[0172] In this embodiment, the terminal device 1 and / or the base station device 3 may apply AI / ML models and / or AI / ML functions to beam management, such as spatial domain downlink beam prediction and / or temporal downlink beam prediction.

[0173] Set A may be a set of beams consisting of multiple DL Tx beams. Terminal device 1 may predict one or more DL TX beams from the beams in Set A using an AI / ML model / function. The one or more predicted DL TX beams may be the model outputs of the AI / ML model and / or function. Set A may also be a resource set consisting of one or more reference signal (CSI-RS or SSB) resource sets. Set B may be a set of beams measured as input to an AI / ML model. The beams of Set A and Set B may be within the same frequency range.

[0174] The spatial domain downlink beam prediction may be a spatial domain downlink beam prediction for set A based on the measurement results of the beam in set B. AI / ML model training and inference may be performed on the network side or on the UE side.

[0175] In spatial domain downlink beam prediction, sets A and B may be different, and set B may be a subset of set A. The AI / ML model input may consist only of L1-RSRP measurements based on set B. The AI / ML model input may consist of L1-RSRP measurements based on set B and assistance information. The AI / ML model input may consist of CIR based on set B. The AI / ML model input may consist of L1-RSRP measurements based on set B and corresponding DL Tx and / or Rx beam IDs.

[0176] The temporal downlink beam prediction may be the temporal downlink beam prediction for set A, based on past measurement results of the beam in set B. AI / ML model training and inference may be performed on the network side or on the UE side.

[0177] In temporal downlink beam prediction, sets A and B may be different. Set B may be a subset of set A. Sets A and B may be the same. The AI / ML model input may be the measurement results of K (where K is 1 or more) of the most recent measurement instances. Here, the measurement results of the K most recent measurement instances may be L1-RSRP measurements based on set B. Alternatively, the measurement results of the K most recent measurement instances may be L1-RSRP measurements based on set B and assistance information. The measurement results of the K most recent measurement instances may be L1-RSRP measurements based on set B and the corresponding DL Tx and / or Rx beam IDs.

[0178] Spatial domain downlink beam prediction aims to provide good spatial domain downlink beam performance while reducing the overhead of measurement and reference signals. Spatial domain downlink transmit beam prediction involves predicting one or more optimal beams from the beams in set A based on the measurement results of the beams in set B. In other words, set B consists of one or more downlink beams from which measurements are taken as model inputs to an AI / ML model and / or function. Set A consists of multiple downlink beams from which one or more downlink beams are predicted as model outputs to an AI / ML model and / or function.

[0179] In this embodiment, the AI / ML model and / or function for spatial domain downlink beam prediction or temporal downlink beam prediction may be a Layer 1 reference signal received power (L1-RSRP) measurement of the beams in set B. The output from the AI / ML model and / or function is the predicted optimal and / or best beam of one or more sets A. AI / ML model training and inference may reside on the base station equipment (network) side or the UE side. In this embodiment, unless otherwise specified, L1-RSRP may be used below.

[0180] The base station device 3 may configure one or more resource sets for set B, which may transmit reference signals (e.g., CSI-RS or SSB) for configured resources within one or more resource sets to which the base station device 3 applies different spatial domain transmission filters. The terminal device 1 may perform measurement with the configured resources. In other words, the one or more resource sets configured for set B may also be the one or more resource sets configured for channel measurement. Therefore, the "one or more resource sets configured for set B" and the "one or more resource sets for channel measurement" may be used alternately.

[0181] In this embodiment, one resource set configured by the base station device 3 for set B (or channel measurement) may be a set of CSI-RS resources or a set of SSB resources. That is, the reference signals for each resource in set B may be transmitted by the base station device 3 using different downlink spatial domain transmit filters. The resource set configured for set B may be used by the terminal device 1 to perform channel measurement for estimation or RSRP measurement on each resource in the resource set.

[0182] The base station device 3 may configure one or more resource sets for set A while the base station device 3 is not transmitting a reference signal (e.g., CSI-RS or SSB) for a resource in which one or more resource sets have been configured.

[0183] In this embodiment, sets A and B may be different; that is, set B may not be a subset of set A. For example, set B may consist of a downlink wide beam based on SSB transmission. Set A may consist of a number of downlink narrow beams based on CSI-RS transmission. Additionally or alternatively, set B may be a subset of set A. For example, set B may consist of a portion of the downlink beams in set A.

[0184] The terminal device 1 may implement functions for data acquisition, model training, management, inference, and / or model storage. For example, the upper layer processing unit 14 may include processing for data acquisition, model training, management, inference, and / or model storage functions. For example, the processing for data acquisition, model training, management, inference, and / or model storage functions may be performed by the AI / ML processing unit. The AI / ML processing unit is a processing unit that performs processing for data acquisition, model training, management, inference, and / or model storage functions, and may consist of the upper layer processing unit 14 and / or a part of the physical layer processing unit (wireless transceiver 10) in the terminal device 1.

[0185] The base station device 3 may implement functions for data acquisition, model training, management, inference, and / or model storage. For example, the upper layer processing unit 34 may include processing for data acquisition, model training, management, inference, and / or model storage functions. For example, the processing for data acquisition, model training, management, inference, and / or model storage functions may be performed by the AI / ML processing unit. The AI / ML processing unit is a processing unit that performs processing for data acquisition, model training, management, inference, and / or model storage functions, and may consist of the upper layer processing unit 34 and / or a part of the physical layer processing unit (wireless transceiver 30) in the base station device 3.

[0186] Figure 7 shows an example of the downlink beam prediction process performed by the base station device 3. Here, AI / ML inference is performed on the base station device or the network side. The base station device 3 may apply AI / ML functions and / or models for downlink beam prediction. This prediction may be referred to as network-side model inference. The terminal device 1 needs to report L1-RSRP measurements for one, more, or all beams in set B to the base station.

[0187] In S701, the base station device 3 transmits a reference signal to the terminal device 1. In S701, the base station device 3 may transmit a reference signal (SSB or CSI-RS) to the terminal device 1 on each resource configured in one or more resource sets for channel measurement. Here, the base station device 3 may use different spatial domain transmit filters to transmit reference signals on different resources. The base station device 3 may perform downlink beam sweeping on the resources configured for set B.

[0188] In S702, terminal device 1 performs RSRP measurement. For example, terminal device 1 may perform channel measurement on each resource for L1-RSRP measurement.

[0189] In S703, terminal device 1 may transmit a measurement report to base station device 3. For example, the measurement report may include L1-RSRP values ​​and resource indicators corresponding to L1-RSRP. Terminal device 1 needs to report L1-RSRP measurements for one, more, or all beams in set B to the base station.

[0190] In S704, the base station device 3 may perform beam prediction based on AI-ML. The base station device 3 may use the measurement report notified in S703 as input for the AI / ML inference function. The base station device 3 may apply an AI / ML model or AI / ML function to predict one or more optimal downlink beams (i.e., the top K best transmit beams in set A) for the terminal device 1 based on the measurement report.

[0191] In S705, the base station device 3 may transmit a subsequent signal and / or channel (e.g., CSI-RS, PDCCH, PDSCH) to the terminal device 1 based on one or more predicted optimal downlink beams. For example, the base station device 3 may select a beam from one or more predicted optimal beams and perform the subsequent transmission on the selected beam.

[0192] Figure 8 shows an example of the downlink beam prediction process performed by terminal device 1. Here, AI / ML inference is performed on the terminal device side. Terminal device 1 may apply AI / ML functions / models for downlink beam prediction. This prediction may be referred to as UE-side model inference. Terminal device 1 needs to report L1-RSRP measurements for one, more, or all beams in set B to the base station.

[0193] In S801, the base station device 3 transmits a reference signal to the terminal device 1. S801 may be the same process as S701.

[0194] In S802, terminal device 1 performs RSRP measurement. For example, terminal device 1 may perform channel measurement on each resource for L1-RSRP measurement.

[0195] In S803, terminal device 1 may perform beam prediction based on AI-ML. Terminal device 1 may use the RSRP measurement results measured in S802 as input for the AI / ML inference function. Terminal device 1 may apply an AI / ML model or AI / ML function to predict the optimal downlink beam (i.e., the top K best transmit beams in set A).

[0196] In S804, terminal device 1 may transmit a measurement report to base station device 3. For example, the measurement report may include L1-RSRP values ​​and resource indicators corresponding to L1-RSRP. Terminal device 1 needs to report the L1-RSRP measurements of one, more, or all beams in set B to the base station. Terminal device 1 may also transmit the results of beam prediction based on AI / ML in S803.

[0197] In S805, the base station device 3 may transmit a subsequent signal and / or channel (e.g., CSI-RS, PDCCH, PDSCH) to the terminal device 1 based on one or more optimal downlink beams predicted by the terminal device 1. For example, the base station device 3 may select a beam from the one or more predicted optimal beams and perform the subsequent transmission with the selected beam.

[0198] Figure 9 shows an example of a method for notifying information related to L1-RSRP measured in the terminal device 1 according to this embodiment.

[0199] In S901, the upper-layer processing unit 14 of the terminal device 1 may receive some or all of the first parameter, the second parameter, and the third parameter. For example, in S901, the terminal device 1 may receive the first parameter, the second parameter, and the third parameter. For example, in S901, the terminal device 1 may receive the first parameter and the second parameter. For example, in S901, the terminal device 1 may receive the first parameter and the third parameter. In S901, if the terminal device does not receive some of the parameters, it may perform processing using values ​​that the terminal device has previously held or values ​​that the terminal device has determined.

[0200] In this embodiment, the number of L1-RSRP measurements in one time instance is defined as M, and the number of CSI-RS resource indices (CRIs) in one time instance is defined as N. A time instance may be information about the time when the terminal device 1 measures each L1-RSRP of the CSI-RS. For example, if the terminal device measures L1-RSRP in four time instances t1, t2, t3, and t4, the number of L1-RSRP measurements in t1 is M1, the number of L1-RSRP measurements in t2 is M2, the number of L1-RSRP measurements in t3 is M3, the number of L1-RSRP measurements in t4 is M4, and the number of L1-RSRP measurements in a given time instance may be referred to as M. For example, if a terminal device measures L1-RSRP in four time instances t1, t2, t3, and t4, the number of CSI-RS resource indices in t1 is N1, the number of CSI-RS resource indices in t2 is N2, the number of CSI-RS resource indices in t3 is N3, and the number of CSI-RS resource indices in t4 is N4. The number of L1-RSRP measurements in a single time instance can be denoted as N.

[0201] The first parameter may be a parameter indicating the number M of CSI-RS resources measured in each time instance reported to a given report setting. For example, the first parameter may include information indicating the locations to which M CSI-RSs are mapped. M may be the number of beams that the base station device 3 instructs the terminal device 1 to measure. For example, M may be the number of resources for the terminal device 1 to perform channel measurements. For example, M may be the number of L1-RSRP measurements when the terminal device 1 measures L1-RSRPs in the measurement resource set. The measurement resource set may be a set of resources that the terminal device 1 measures. CSI-RS resources may be resources to which CSI-RSs are mapped. M may be set by the base station device 3. For example, M may be set by the upper layer of the base station device 3. The first parameter may be set in the upper layer.

[0202] The second parameter may be a threshold related to L1-RSRP. For example, the second parameter may be a value indicating a power difference, such as X[dB]. When terminal device 1 measures L1-RSRP and obtains multiple L1-RSRP measurements, the second parameter may be a value indicating the power difference between the measured values ​​other than the maximum L1-RSRP and the maximum L1-RSRP. The second parameter may be set by base station device 3. The second parameter may be set at a higher layer. For example, the second parameter may be set by the higher layer of base station device 3. The second parameter may be set to a different value for each time instance.

[0203] The third parameter may be a parameter indicating the number of time instances Y for the terminal device to measure each L1-RSRP of the CSI-RS. A time instance may be information about the time at which the terminal device measures each L1-RSRP of the CSI-RS. The third parameter may be the number of time instances. For example, if the time instances are times t1, t2, t3, and t4, the third parameter may be 4, and Y may be 4. Alternatively, the third parameter may be information indicating the time at which the terminal device measures each L1-RSRP of the CSI-RS. For example, if the time instances are times t1, t2, t3, and t4, the third parameter may be t1, t2, t3, and t4, or t1 and t4, which are the start and end times of the time instances. Alternatively, the third parameter may be set by information indicating the time and the number of time instances. For example, if the time instances are times t1, t2, t3, and t4, the third parameter may be time t1 and the number of time instances, 4. Y may be set by the base station device 3. For example, Y may be set by the upper layer of the base station device 3. The third parameter may be set in the upper layer.

[0204] In S902, the receiving unit of terminal device 1 receives M CSI-RSs in each time instance based on the first parameter. For example, the receiving unit of terminal device 1 receives M1, M2, M3, and M4 CSI-RSs in four time instances t1, t2, t3, and t4 based on the first parameter. Terminal device 1 may also receive M CSI-RS resources based on a parameter that sets the M CSI-RS resources included in the first parameter.

[0205] In S903, the measurement unit of terminal device 1 measures the L1-RSRP of each of the M CSI-RSs in each time instance. The measurement unit may be included in the physical layer processing unit. For example, the measurement unit of terminal device 1 measures the L1-RSRP of each of the M1, M2, M3, and M4 CSI-RSs in four time instances t1, t2, t3, and t4, respectively, and obtains the measured values ​​of the M1, M2, M3, and M4 L1-RSRPs.

[0206] In S904, the transmitting unit of terminal device 1 transmits uplink control information (UCI) to base station device 3. The UCI may include at least a first field set. The first field set consists of Y first fields, each of which Y first fields may represent the number N of CSI-RS resource indices (CRI) in each of the Y time instances.

[0207] When the second parameter is received in terminal device 1, a threshold for L1-RSRP may be set in S904. In each time instance, the UCI may include L1-RSRP associated with N CSI-RS resource indices between the first and second values. For example, in each time instance, the UCI may include N L1-RSRPs out of M L1-RSRPs that are between the first and second values, N CSI-RS resource indices (CRIs) corresponding to the N L1-RSRPs, and the number of CSI-RS resource indices, N.

[0208] In S904, for example, if Y is set to 4 by the third parameter, the first field set may be a first field indicating the number of CSI-RS resource indexes (CRIs) in the four time instances. For example, if four time instances t1, t2, t3, and t4 are set by the third parameter, the first field set may consist of four first fields, including a field indicating the number of CSI-RS resource indexes N1 in t1, a field indicating the number of CSI-RS resource indexes N2 in t2, a field indicating the number of CSI-RS resource indexes N3 in t3, and a field indicating the number of CSI-RS resource indexes N4 in t4. In this case, N1, N2, N3, and N4 may be N L1-RSRPs in each time instance that fall between the first and second values ​​of the M L1-RSRPs. In this case, the first field in time instance t1 may be N1, the first field in time instance t2 may be N2, the first field in time instance t3 may be N3, and the first field in time instance t4 may be N4. Regardless of how the third parameter is set, the value of N in the first field may be set for each time in the time instance.

[0209] The first value may be the maximum value of the M L1-RSRPs measured in S903. The second value may be the first value minus the threshold value included in the second parameter. N may be the number of L1-RSRPs between the first and second values. For example, if the terminal device measures the L1-RSRP of each of the M CSI-RSs, the number of L1-RSRPs between the first and second values ​​may be N. For example, in S903, if M is 4, the terminal device 1 measures 4 L1-RSRPs, and the measured values ​​of the L1-RSRPs are -70 [dBm], -72 [dBm], -75 [dBm], and -78 [dBm]. In this case, the first value will be the maximum value of the 4 measured values, which is -70 [dBm]. In this case, if the threshold included in the second parameter is 5 [dB], the second value is obtained by subtracting the threshold value of 5 [dB] from the first value of -70 [dBm], resulting in -75 [dBm]. In this case, in S904, the N L1-RSRPs included in the first and second values ​​are -70 [dBm], -72 [dBm], and -75 [dBm], and N is 3. Note that in this case, -75 [dBm] does not have to be included in the N L1-RSRPs included in the first and second values, and if the first value and the L1-RSRP value are the same, that value may be excluded from the N candidates.

[0210] Thus, in Figure 9, the terminal device may measure M L1-RSRPs and transmit information about N L1-RSRPs that are within the threshold range from the maximum value of the measured L1-RSRPs, including this information in the UCI.

[0211] Figure 10 shows an example of how the terminal device 1 according to this embodiment notifies L1-RSRP.

[0212] The N L1-RSRPs included in the UCI may be measured values ​​of the N L1-RSRPs. The terminal device 1 may use Figure 10 to set the Reported value corresponding to each RSRP value as the N L1-RSRPs included in the UCI. For example, if the measured values ​​of three L1-RSRPs are -70[dBm], -72[dBm], and -75[dBm], then using Figure 10, the Reported values ​​would be RSRP_87, RSRP_85, and RSRP_82, and these Reported values ​​may be set as the information for the N L1-RSRPs included in the UCI.

[0213] Figure 11 shows an example of how the terminal device 1 according to this embodiment notifies L1-RSRP using differential RSRP.

[0214] The N L1-RSRPs included in the UCI may be the maximum value of the L1-RSRP and N-1 power differences from the maximum value, where the maximum value is a power value expressed in dBm, and the L1-RSRPs other than the maximum value may be the power difference between the L1-RSRP maximum value and the power value expressed in dBm. Here, the L1-RSRPs other than the maximum value may be called differential RSRPs. For example, if the measured values ​​of the three L1-RSRPs are -70[dBm], -72[dBm], and -75[dBm], the maximum value of the L1-RSRP is -70[dBm], and the differential RSRPs may be -2[dB] and -5[dB]. In this case, the information corresponding to the maximum value of -70[dBm] may be set in RSRP_87 using the Reported value corresponding to the RSRP value in Figure 10. Furthermore, using the Reported value corresponding to the difference RSRP in Figure 11, the information corresponding to the differential RSRPs of -2[dB] and -5[dB] may be set to DIFFRSRP_1 and DIFFRSRP_2.

[0215] The N CRIs corresponding to L1-RSRPs included in the UCI may be indexes of CSI-RS resources corresponding to the N L1-RSRPs.

[0216] The number of CSI-RS resource indices included in the UCI may be N. The field indicating the number N of CSI-RS resource indices may be referred to as the first field. A CSI-RS resource index (CRI) is a CSI-RS index mapped to a resource element and may be referred to as a beam index.

[0217] The UCI may consist of a first part and a second part. The first part may include at least a first field. The bit size of the first field may be determined based on the value of M, for example, the bit size of the first field may be log2(M). The second part may include at least the N L1-RSRPs and the N CRIs for Y time instances. The first part may be CSI part 1. The second part may be CSI part 2.

[0218] The UCI consists of a first part and a second part, the first part may include a first field containing the number N of CSI-RS resource indexes, and the second part may include N CRIs and N L1-RSRPs. For example, if the number of time instances Y is 4, the first field included in the first part contains the number N of CSI-RS resource indexes per time instance, and the first part may include the values ​​of N1, N2, N3, and N4. For example, the N CRIs and N L1-RSRPs included in the second part include N CRIs and N L1-RSRPs per time instance, and the second part may include N1 CRIs and N1 L1-RSRPs, N2 CRIs and N2 L1-RSRPs, N3 CRIs and N3 L1-RSRPs, and N4 CRIs and N4 L1-RSRPs.

[0219] The UCI consists of a first part and a second part, the first part may include a first field containing the number N of CSI-RS resource indexes, and the second part may include N CRIs, the maximum value of L1-RSRPs, and N-1 differential RSRPs. When differential RSRPs are used in the second part, the maximum value of L1-RSRPs and N-1 differential RSRPs included in the second part may include the maximum value of L1-RSRPs and N-1 differential RSRPs for each time instance. For example, the second part may include the maximum value of N1 L1-RSRPs and N1-1 differential RSRPs, the maximum value of N2 L1-RSRPs and N2-1 differential RSRPs, the maximum value of N3 L1-RSRPs and N3-1 differential RSRPs, and the maximum value of N4 L1-RSRPs and N4-1 differential RSRPs.

[0220] The UCI consists of a first part and a second part, the first part may include the maximum value of L1-RSRP in Y time instances and the CRI corresponding to that maximum value of L1-RSRP. In this case, the first part may include a first field containing the number N of CSI-RS resource indexes, the maximum value of L1-RSRP in Y time instances, and the CRI corresponding to that maximum value of L1-RSRP. Furthermore, the second part may include N-1 differential RSRPs and the CRI corresponding to N-1 differential RSRPs. The first part may include information indicating the time instance at the maximum value of L1-RSRP. For example, if the number of time instances Y is 4, the first field may include the number of CSI-RS resource indexes N for each time instance, and the first part may include the value of N1, the value of N2, the value of N3, the value of N4, the maximum value of L1-RSRP in the Y time instances, the CRI corresponding to that maximum value of L1-RSRP, and information indicating the time instance at the maximum value of L1-RSRP. Furthermore, the second part may be the differential RSRP excluding the maximum value of L1-RSRP in the Y time instances, and the CRI corresponding to that differential RSRP. The maximum value of L1-RSRP in the Y time instances may be the L1-RSRP that is the maximum value among N1 L1-RSRPs, N2 L1-RSRPs, N3 L1-RSRPs, and N4 L1-RSRPs. In addition, in the second part, the values ​​of differential RSRP may be set in the order of time indices t1, t2, t3, and t4. Furthermore, in the second part, the differential RSRP values ​​within the same time index may be set in the order of CRI.

[0221] Furthermore, if the terminal device does not receive the third parameter in S901, the first part of the UCI in S904 may include information about the time instance. For example, the information about the time instance may be information indicating the time instance in which the L1-RSRP included in the UCI was measured. For example, the information about the time instance may be the number of time instances Y, the time of the time instance, the start and end times of the time instance, or information indicating the time and the time instance.

[0222] The upper layer processing unit 34 of the base station device 3 may set some or all of the first, second, and third parameters. The transmitting unit of the base station device 3 may transmit M CSI-RSs based on the first parameter. The receiving unit of the base station device 3 receives the UCI transmitted from the terminal device 1. The base station device 3 may perform temporal downlink beam prediction using the L1-RSRP transmitted from the terminal device 1.

[0223] Figure 12 shows an example of a method for notifying information related to L1-RSRP that is predicted in the terminal device 1 according to this embodiment.

[0224] In S1201, the upper-layer processing unit 14 of the terminal device 1 may receive some or all of the fourth parameter, the fifth parameter, the sixth parameter, and the seventh parameter. For example, in S1201, the terminal device 1 may receive the fourth parameter, the fifth parameter, the sixth parameter, and the seventh parameter. For example, in S1201, the terminal device 1 may receive the fourth parameter, the fifth parameter, and the sixth parameter. In S1201, if the terminal device does not receive some of the parameters, it may perform processing using values ​​that the terminal device has previously held or values ​​that the terminal device has determined.

[0225] In this embodiment, the number of predicted L1-RSRP values ​​in one time instance is defined as K, and the number of CSI-RS resource indices (CRIs) in one time instance is defined as N. A time instance may be information indicating the time when the terminal device 1 predicts the L1-RSRP for each CSI-RS and the predicted L1-RSRP values ​​are used. For example, when the terminal device 1 calculates the predicted L1-RSRP values ​​in time instances t5, t6, and t7, the number of predicted L1-RSRP values ​​in t5 is K5, the number of predicted L1-RSRP values ​​in t6 is K6, the number of predicted L1-RSRP values ​​in t7 is K7, and the number of predicted L1-RSRP values ​​in a given time instance may be referred to as K. For example, when terminal device 1 calculates predicted values ​​of L1-RSRP in time instances t5, t6, and t7, the number of CSI-RS resource indices in t5 is N5, the number of CSI-RS resource indices in t6 is N6, the number of CSI-RS resource indices in t7 is N7, and the number of measured values ​​of L1-RSRP in a given time instance may be referred to as N.

[0226] The fourth parameter may be a parameter that configures one or more CSI-RS resources. For example, the fourth parameter may include information indicating the location where one or more CSI-RS resources are mapped. The fourth parameter may be configured at a higher layer.

[0227] The fifth parameter may be a parameter indicating the number K of predicted CSI-RS resources to be reported in a given report setting. K may be set by the base station device 3. For example, K may be set by the upper layer of the base station device 3. The fifth parameter may be set by the base station device 3. For example, the fifth parameter may be set by the upper layer of the base station device 3.

[0228] The sixth parameter may be a parameter indicating the number of time instances Y for predicting the L1-RSRP for each CSI-RS. The sixth parameter may be the number of time instances. For example, if terminal device 1 calculates the predicted values ​​of L1-RSRP for time instances t5, t6, and t7, the sixth parameter may be 3 and Y may be 3. The sixth parameter may also be information indicating the time when the terminal device predicts the L1-RSRP for each CSI-RS and the predicted values ​​of L1-RSRP are used. For example, if terminal device 1 calculates the predicted values ​​of L1-RSRP for time instances t5, t6, and t7, the sixth parameter may be t5, t6, and t7, or t5 and t7, which are the start and end times of the time instances. The sixth parameter may also be set by information indicating the time and the number of time instances. For example, if the time instances are times t5, t6, and t7, the sixth parameter may be time t5 and the number of time instances, 3. Y may be set by the base station device 3. For example, Y may be set by the upper layer of the base station device 3. The sixth parameter may be set in the upper layer.

[0229] The seventh parameter may be a threshold related to L1-RSRP. For example, the seventh parameter may be a value indicating a power difference, such as X[dB]. When terminal device 1 predicts L1-RSRP and multiple predicted values ​​for L1-RSRP are obtained, the seventh parameter may be a value indicating the power difference between predicted values ​​other than the maximum value of L1-RSRP and the maximum value of L1-RSRP. The seventh parameter may be set by base station device 3. The seventh parameter may be set in a higher layer. For example, the seventh parameter may be set in a higher layer of base station device 3. The seventh parameter may be set to a different value for each time instance.

[0230] In S1202, the receiving unit of terminal device 1 receives one or more CSI-RS signals in each time instance based on the fourth parameter. Terminal device 1 may also receive CSI-RS resources based on the parameter that sets one or more CSI-RS resources included in the fourth parameter.

[0231] In S1203, the measurement unit of terminal device 1 measures the L1-RSRP of one or more CSI-RSs in each time instance. The measurement unit may be included in the physical layer processing unit. For example, if four CSI-RS resources are set in a given time instance, terminal device 1 measures the L1-RSRP for each of the four CSI-RS resources and obtains the measured values ​​of the four L1-RSRPs.

[0232] In S1204, terminal device 1 predicts K L1-RSRPs from the measured values ​​of L1-RSRPs in each time instance. Terminal device 1 may perform temporal downlink beam prediction using the measured values ​​of L1-RSRPs measured in S1203. Terminal device 1 may perform temporal downlink beam prediction using the measured values ​​of L1-RSRPs measured in S1203 and past measured values ​​of L1-RSRPs. The L1-RSRPs predicted in S1204 may be referred to as predicted L1-RSRPs.

[0233] In S1205, the transmitting unit of the terminal device 1 transmits uplink control information (UCI) to the base station device 3. The UCI may include at least a first field set. The first field set consists of Y first fields, each of which Y first fields may represent the number N of CSI-RS resource indices (CRI) in each of the Y time instances.

[0234] When the sixth parameter is received in terminal device 1, a threshold for L1-RSRP may be set in S1205. In each time instance, the UCI may include L1-RSRP associated with N CSI-RS resource indices between the third and fourth values. For example, in each time instance, the UCI may include N L1-RSRPs among K predicted L1-RSRPs that fall between the third and fourth values, N CSI-RS resource indices (CRIs) corresponding to the N L1-RSRPs, and the number of CSI-RS resource indices, N.

[0235] In S1205, for example, if Y is set to 3 by the seventh parameter, the first field set is the number of CSI-RS resource indexes (CRIs) in the three time instances, which may be N5, N6, and N7, respectively. For example, if time instances t5, t6, and t7 are set by the seventh parameter, the first field set consists of three first fields, which may include the number of CSI-RS resource indexes in t5 N5, the number of CSI-RS resource indexes in t6 N6, and the number of CSI-RS resource indexes in t7 N7. In this case, N5, N6, and N7 may be the N L1-RSRPs that fall between the first and second values ​​of the K L1-RSRPs in each time instance. In this case, the first field in time instance t5 may be N5, the first field in time instance t6 may be N6, and the first field in time instance t7 may be N7. The first field may have a value of N set for each time in the time instance, regardless of how the seventh parameter is set.

[0236] The third value may be the maximum value of the predicted L1-RSRP predicted in S1204. The fourth value may be the value obtained by subtracting the threshold value from the third value. N may be the number of predicted L1-RSRPs that fall between the third value and the fourth value. For example, if terminal device 1 holds K predicted L1-RSRPs, the number of predicted L1-RSRPs that fall between the third value and the fourth value may be N.

[0237] In S1205, the threshold value may be the value indicated by the fifth parameter. The fifth parameter may be set by the base station device 3. The fifth parameter may be set in a higher layer. For example, the fifth parameter may be set by the higher layer of the base station device 3. The fifth parameter may also be a value pre-set in the terminal device.

[0238] Thus, in Figure 12, the terminal device may predict K L1-RSRPs and transmit information about N L1-RSRPs that are within the threshold range from the maximum predicted L1-RSRP to the UCI.

[0239] The method for configuring the N L1-RSRPs included in the UCI is the same as for S904, and either the RSRP notification method shown in Figure 10 or the notification method using differential RSRP shown in Figure 11 may be used.

[0240] The N L1-RSRPs included in the UCI may be N predicted L1-RSRPs. The terminal device 1 may use Figure 10 to set the Reported value corresponding to each RSRP value as the N L1-RSRPs included in the UCI. For example, if the three predicted L1-RSRPs are -70[dBm], -72[dBm], and -75[dBm], then using Figure 10, the Reported values ​​would be RSRP_87, RSRP_85, and RSRP_82, and these Reported values ​​may be set as the information for the N L1-RSRPs included in the UCI.

[0241] The N L1-RSRPs included in the UCI may be the maximum value of the L1-RSRP and N-1 power differences from the maximum value, where the maximum value is a power value expressed in dBm, and the L1-RSRPs other than the maximum value may be the power difference between the L1-RSRP maximum value and the power value expressed in dBm. Here, the L1-RSRPs other than the maximum value may be called differential RSRPs. For example, if the three predicted L1-RSRPs are -70[dBm], -72[dBm], and -75[dBm], the maximum value of the L1-RSRP is -70[dBm], and the differential RSRPs may be -2[dB] and -5[dB]. In this case, the information corresponding to the maximum value of -70[dBm] may be set in RSRP_87 using the Reported value corresponding to the RSRP value in Figure 10. Furthermore, using the Reported value corresponding to the difference RSRP in Figure 11, the information corresponding to the differential RSRPs of -2[dB] and -5[dB] may be set to DIFFRSRP_1 and DIFFRSRP_2.

[0242] The N CRIs corresponding to L1-RSRPs included in the UCI may be indexes of CSI-RS resources corresponding to the N L1-RSRPs.

[0243] The number of CSI-RS resource indices included in the UCI may be N. The field indicating the number N of CSI-RS resource indices may be referred to as the first field. A CSI-RS resource index (CRI) is a CSI-RS index mapped to a resource element and may be referred to as a beam index.

[0244] The UCI may consist of a first part and a second part. The first part may include at least a first field. The bit size of the first field may be determined based on the value of K, for example, the bit size of the first field may be log2(K). The second part may include at least the K L1-RSRPs and the K CRIs for Y time instances. The first part may be CSI part 1. The second part may be CSI part 2.

[0245] The UCI consists of a first part and a second part, the first part may include a first field containing the number N of CSI-RS resource indexes, and the second part may include N CRIs and N L1-RSRPs. For example, if the number of time instances Y is 3, the first field in the first part may contain the number N of CSI-RS resource indexes for each time instance, and the first part may contain the values ​​of N5, N6, and N7. For example, the N CRIs and N L1-RSRPs in the second part may contain N CRIs and N L1-RSRPs for each time instance, and the second part may contain N5 CRIs and N5 L1-RSRPs, N6 CRIs and N6 L1-RSRPs, and N7 CRIs and N7 L1-RSRPs.

[0246] The UCI consists of a first part and a second part, the first part may include a first field containing the number N of CSI-RS resource indexes, and the second part may include N CRIs, the maximum value of L1-RSRPs, and N-1 differential RSRPs. For example, if differential RSRPs are used in the second part, the maximum value of L1-RSRPs and N-1 differential RSRPs included in the second part will include the maximum value of L1-RSRPs and N-1 differential RSRPs for each time instance, and the second part may include the maximum value of N5 L1-RSRPs and N5-1 differential RSRPs, the maximum value of N6 L1-RSRPs and N6-1 differential RSRPs, and the maximum value of N7 L1-RSRPs and N7-1 differential RSRPs.

[0247] The UCI consists of a first part and a second part, the first part may include the maximum value of L1-RSRP in Y time instances and the CRI corresponding to that maximum L1-RSRP. In this case, the first part may include a first field containing the number of CSI-RS resource indexes N, the maximum value of L1-RSRP in Y time instances and the CRI corresponding to that maximum L1-RSRP. Furthermore, the second part may include N-1 differential RSRPs and the CRI corresponding to N-1 differential RSRPs. The first part may include information indicating the time instance at the maximum value of L1-RSRP. For example, if the number of time instances Y is 3, the first field contains the number of CSI-RS resource indexes N for each time instance, and the first part may include the value of N5, the value of N6, the value of N7, the maximum value of L1-RSRP in Y time instances, the CRI corresponding to that maximum L1-RSRP, and information indicating the time instance at the maximum L1-RSRP. Furthermore, the second part may consist of differential RSRPs obtained by excluding the maximum value of L1-RSRPs in Y time instances, and the CRI corresponding to those differential RSRPs. Also, in the second part, the values ​​of differential RSRPs may be set within the second part in the order of time indices t5, t6, and t7. Also, in the second part, the values ​​of differential RSRPs within the same time index may be set in the order of CRIs.

[0248] In addition, if no threshold is set in S1205, terminal device 1 may transmit K L1-RSRPs to base station device 3. In that case, UCI may include K L1-RSRPs and K CSI-RS resource indices (CRIs) corresponding to the L1-RSRPs. UCI consists of a first part, which may include K L1-RSRPs and K CRIs corresponding to the L1-RSRPs.

[0249] If the terminal device does not receive the seventh parameter in S1201, the first part of the UCI in S1205 may include information about time instances. For example, the information about time instances may be information indicating the time instance in which the L1-RSRP included in the UCI was measured. For example, the information about time instances may be the number of time instances Y, the time of the time instance, the start and end times of the time instance, or information indicating the time and the time instance.

[0250] The upper layer processing unit 34 of the base station device 3 may set some or all of the fourth, fifth, sixth, and seventh parameters. The transmitting unit of the base station device 3 may transmit CSI-RS based on the fourth parameter. The receiving unit of the base station device 3 receives the UCI transmitted from the terminal device 1.

[0251] The programs that operate in the base station device 3 and terminal device 1 according to one aspect of the present invention may be programs that control the CPU (Central Processing Unit) and the like (programs that make the computer function) in order to realize the functions of the above embodiment according to one aspect of the present invention. The information handled by these devices is temporarily stored in RAM (Random Access Memory) during processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) or HDD (Hard Disk Drive), and read, modified, and written by the CPU as needed.

[0252] Furthermore, the terminal device 1 and a part of the base station device 3 in the above-described embodiment may be implemented using a computer. In that case, the program for implementing this control function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read by a computer system and executed.

[0253] Furthermore, the term "computer system" as used herein refers to a computer system built into terminal device 1 or base station device 3, and includes hardware such as the OS and peripheral devices. In addition, "computer-readable recording medium" refers to portable media such as flexible disks, magneto-optical disks, ROMs, CD-ROMs, and storage devices such as hard disks built into computer systems.

[0254] Furthermore, "computer-readable recording media" may include those that dynamically hold programs for a short period of time, such as communication lines used when transmitting programs via networks such as the Internet or communication lines such as telephone lines, as well as those that hold programs for a certain period of time, such as volatile memory within a computer system that acts as a server or client in such cases. In addition, the above-mentioned program may be for the purpose of realizing some of the functions described above, or it may be a program that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0255] Furthermore, the base station device 3 in the above-described embodiment can also be realized as an assembly (device group) composed of multiple devices. Each device constituting the device group may have some or all of the functions or functional blocks of the base station device 3 related to the above-described embodiment. The device group only needs to have a complete set of the functions or functional blocks of the base station device 3. In addition, the terminal device 1 related to the above-described embodiment can also communicate with the base station device as an assembly.

[0256] Furthermore, the base station device 3 in the above-described embodiment may be an Evolved Universal Terrestrial Radio Access Network (EUTRAN) and / or an NG-RAN (NextGen RAN, NR RAN). Also, the base station device 3 in the above-described embodiment may have some or all of the functions of a higher-level node for eNodeB and / or gNB.

[0257] Furthermore, some or all of the terminal device 1 and base station device 3 in the above-described embodiment may be implemented as LSIs, which are typically integrated circuits, or as chipsets. Each functional block of the terminal device 1 and base station device 3 may be individually chipped, or some or all of them may be integrated into a single chip. In addition, the method of integrated circuit implementation is not limited to LSIs; it may also be implemented using dedicated circuits or general-purpose processors. Moreover, if advances in semiconductor technology lead to the emergence of integrated circuit implementation technologies that can replace LSIs, it is also possible to use integrated circuits based on those technologies.

[0258] Furthermore, although the above-described embodiment mentions a terminal device as an example of a communication device, the present invention is not limited to this and can also be applied to stationary or non-movable electronic devices installed indoors or outdoors, such as AV equipment, kitchen equipment, cleaning and washing machines, air conditioning equipment, office equipment, vending machines, and other household appliances, as well as terminal devices or communication devices.

[0259] Although embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like that do not depart from the gist of the invention are also included. Furthermore, one aspect of the present invention can be modified in various ways within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. In addition, configurations in which elements described in each of the above embodiments that produce similar effects are substituted for each other are also included.

[0260] One aspect of the present invention can be used, for example, in communication systems, communication equipment (e.g., mobile phone devices, base station devices, wireless LAN devices, or sensor devices), integrated circuits (e.g., communication chips), or programs.

[0261] 1 (1A, 1B, 1C) Terminal device 3 Base station device 10, 30 Wireless transceiver unit 11, 31 Antenna unit 12, 32 RF unit 13, 33 Baseband unit 14, 34 Upper layer processing unit 15, 35 Media access control layer processing unit 16, 36 Wireless resource control layer processing unit 601 Data acquisition unit 602 Model training unit 603 Management unit 604 Inference unit 605 Model storage unit

Claims

1. A terminal device for communicating with a base station device, comprising: an upper layer processing unit that receives a fourth parameter, a fifth parameter, and a sixth parameter; a receiving unit that receives CSI-RS based on the fourth parameter; a measuring unit that measures the L1-RSRP of each of the CSI-RS; and a transmitting unit that transmits uplink control information (UCI), wherein the fourth parameter is a parameter that sets the CSI-RS resources; the fifth parameter is a parameter that indicates the number K of predicted CSI-RS resources in each time instance reported in a certain report setting; the sixth parameter is the number Y of time instances for predicting the L1-RSRP of each of the CSI-RS; and the UCI includes at least a first field set, the first field set being Y first fields, and each of the Y first fields indicating the number N of CSI-RS resource indices (CRI) in each of the Y time instances.

2. The terminal device according to claim 1, which receives a seventh parameter for setting a threshold for L1-RSRP, wherein in each of the time instances, the L1-RSRP associated with N of the CSI-RS resource indices is between a first value and a second value, where the first value is the maximum L1-RSRP value predicted in the time instance, and the second value is the first value minus the threshold value.

3. The terminal device according to claim 2, wherein the UCI comprises a first part and a second part, the first part comprising at least the first field set.

4. The terminal device according to claim 3, wherein the bit size of the first field is determined based on the value of K.

5. The terminal device according to claim 3, wherein the second part comprises at least the N L1-RSRPs and the N CRIs in the Y time instances.

6. A base station device for communicating with a terminal device, comprising: an upper layer processing unit for setting a fourth parameter, a fifth parameter, a sixth parameter, and a seventh parameter; a transmitting unit for transmitting CSI-RS based on the fourth parameter; and a receiving unit for receiving uplink control information (UCI), wherein the fourth parameter is a parameter for setting the CSI-RS resources; the fifth parameter is a parameter indicating the number K of predicted CSI-RS resources in each time instance reported in a certain report setting; the sixth parameter is the number Y of time instances for predicting the L1-RSRP of each CSI-RS; the UCI includes at least a first field set, the first field set consists of Y first fields, and each of the Y first fields indicates the number N of CSI-RS resource indices (CRI) in each of the Y time instances.

7. A communication method for a terminal device communicating with a base station device, comprising: receiving a fourth parameter, a fifth parameter, a sixth parameter, and a seventh parameter; receiving CSI-RS based on the fourth parameter; measuring the L1-RSRP of each of the CSI-RS; transmitting uplink control information (UCI); the fourth parameter being a parameter for setting the CSI-RS resources; the fifth parameter being a parameter indicating the number K of predicted CSI-RS resources in each time instance reported in a certain report setting; the sixth parameter being the number Y of time instances for predicting the L1-RSRP of each of the CSI-RS; the UCI comprising at least a first field set, the first field set being Y first fields, and each of the Y first fields indicating the number N of CSI-RS resource indices (CRIs) in each of the Y time instances.

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