Terminal, wireless communication method, and base station

Abstract

A terminal according to one aspect of the present disclosure comprises: a reception unit that receives information for reception or transmission of a signal for a target of a network or a cell to acquire channel state information (CSI); and a control unit that controls the reception or the transmission on the basis of the information in a state before connection to the target.

Description

Terminal, wireless communication method, and base station

[0001] This disclosure relates to terminals, wireless communication methods, and base stations in next-generation mobile communication systems.

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) was specified with the aim of achieving even higher data rates and lower latency (Non-Patent Literature 1). Furthermore, LTE-Advanced (3GPP Rel. 10-14) was specified with the aim of further increasing the capacity and sophistication of LTE (Third Generation Partnership Project (3GPP®) Release (Rel.) 8, 9).

[0003] Successor systems to LTE (for example, 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 and later) are also being considered.

[0004] 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010

[0005] In existing wireless communication systems (e.g., NR), a terminal (user terminal, User Equipment (UE)) reports channel status information (CSI) to the network (NW, base station), allowing the NW to apply appropriate modulation and encoding to the downlink (DL) data.

[0006] However, the measurement and reporting of performance when the terminal is not connected has not been adequately considered. Insufficient consideration of this may lead to a decrease in communication performance and throughput.

[0007] Therefore, one of the objectives of this disclosure is to provide a terminal, a wireless communication method, and a base station that can improve communication performance / throughput.

[0008] A terminal according to one aspect of the present disclosure includes a receiving unit that receives information for receiving or transmitting signals for a network or cell target to acquire channel status information (CSI), and a control unit that controls the receiving or transmitting based on the information in a state prior to connecting to the target.

[0009] According to one aspect of this disclosure, communication performance / throughput can be improved.

[0010] Figure 1 shows an example of a suspend setting in an RRC release message. Figure 2 shows an example of a 4-step CBRA procedure for an idle UE. Figure 3 shows an example of a 4-step CBRA procedure for a connected UE. Figure 4 shows an example of a 4-bit CQI table. Figure 5 shows an example of a 4-bit CQI table 2. Figure 6 shows an example of a 4-bit CQI table 3. Figure 7 shows an example of a 4-bit CQI table 4. Figure 8 shows an example of a 4-bit CQI table related to option 6 of embodiment 1. Figure 9 shows an example of a schematic configuration of a wireless communication system according to one embodiment. Figure 10 shows an example of a base station configuration according to one embodiment. Figure 11 shows an example of a user terminal configuration according to one embodiment. Figure 12 shows an example of the hardware configuration of a base station and user terminal according to one embodiment. Figure 13 shows an example of a vehicle according to one embodiment.

[0011] (CSI Reporting) Rel. 15 In NR, a terminal (also called a user terminal, User Equipment (UE), etc.) generates (also called determining, calculating, estimating, measuring, etc.) Channel State Information (CSI) based on a Reference Signal (RS) (or a resource for said RS), and transmits (also called reporting, feedback, etc.) the generated CSI to the network (e.g., a base station). The CSI may be transmitted to the base station using, for example, an uplink control channel (e.g., a Physical Uplink Control Channel (PUCCH)) or an uplink shared channel (e.g., a Physical Uplink Shared Channel (PUSCH)).

[0012] The RS used to generate the CSI may be at least one of the following: Channel State Information Reference Signal (CSI-RS), Synchronization Signal / Physical Broadcast Channel (SS / PBCH) block, Synchronization Signal (SS), or Demodulation Reference Signal (DMRS).

[0013] The CSI-RS may include at least one of Non Zero Power (NZP) CSI-RS and CSI-Interference Management (CSI-Interference Measurement, CSI-IM). The SS / PBCH block is a block that includes SS and PBCH (and corresponding DMRS), and may be called an SS block (SSB), etc. The SS may also include at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).

[0014] Furthermore, CSI may include at least one of the following: Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), CSI-RS Resource Indicator (CRI), SS / PBCH Block Resource Indicator (SSBRI, SSB Index), Layer Indicator (LI), Rank Indicator (RI), L1-RSRP (Layer 1 Reference Signal Received Power), L1-RSRQ (Reference Signal Received Quality), L1-SINR (Signal to Interference plus Noise Ratio), L1-SNR (Signal to Noise Ratio).

[0015] The UE may receive information regarding CSI reporting (report configuration information) and control CSI reporting based on that report configuration information. This report configuration information may be, for example, the "CSI-ReportConfig" information element (IE) of Radio Resource Control (RRC).

[0016] The reporting configuration information (for example, "CSI-ReportConfig" in RRC IE) may include, for example, at least one of the following: ◆ Information about the type of CSI report (report type information, for example, "reportConfigType" in RRC IE) ◆ Information about one or more quantities (one or more CSI parameters) of CSI to be reported (report quantity information, for example, "reportQuantity" in RRC IE) ◆ Information about the RS resources used to generate the quantity (the CSI parameter) (resource information, for example, "CSI-ResourceConfigId" in RRC IE) ◆ Information about the frequency domain to which the CSI report is applied (frequency domain information, for example, "reportFreqConfiguration" in RRC IE)

[0017] For example, the reporting type information may indicate a periodic CSI (P-CSI) report, an aperiodic CSI (A-CSI, AP-CSI) report, or a semi-persistent CSI (SP-CSI) report.

[0018] Furthermore, the reported quantity information may specify at least one combination of the above-mentioned CSI parameters (e.g., CRI, RI, PMI, CQI, LI, L1-RSRP, etc.).

[0019] Furthermore, the resource information may also be the ID of the RS resource. The RS resource may include, for example, a non-zero power CSI-RS resource or SSB and a CSI-IM resource (for example, a zero-power CSI-RS resource).

[0020] Furthermore, frequency domain information may indicate the frequency granularity of the CSI report. This frequency granularity may include, for example, wideband and subband. The wideband is the entire CSI reporting band. The wideband may be, for example, the entire carrier (component carrier (CC), cell, serving cell) or the entire bandwidth part (BWP) within a carrier. The wideband may also be referred to as the CSI reporting band, the entire CSI reporting band, etc.

[0021] Furthermore, a subband may be part of the wideband and may consist of one or more resource blocks (RBs or physical resource blocks (PRBs)). The size of the subband may be determined according to the size of the BWP (number of PRBs).

[0022] Frequency domain information may indicate whether to report wideband or subband PMI (frequency domain information may include, for example, the RRC IE's "pmi-FormatIndicator" used to determine whether to report wideband PMI or subband PMI). Based on at least one of the above-mentioned reporting quantity information and frequency domain information, the UE may determine the frequency granularity of the CSI report (i.e., whether to report wideband PMI or subband PMI).

[0023] If wideband PMI reporting is established (decided), one wideband PMI may be reported for the entire CSI reporting band. On the other hand, if subband PMI reporting is established, a single wideband indication i1 may be reported for the entire CSI reporting band, and one subband indication i2 (e.g., subband indication for each subband) may be reported for one or more subbands within the entire CSI reporting band.

[0024] The UE performs channel estimation using the received RS and estimates the channel matrix H. The UE then feeds back the index (PMI) determined based on the estimated channel matrix.

[0025] PMI may represent a precoder matrix (also simply called a precoder) that a UE considers appropriate for use in downlink (DL) transmissions to the UE. Each value of PMI may correspond to a single precoder matrix. A set of PMI values ​​may correspond to a different set of precoder matrices called a precoder codebook (also simply called a codebook).

[0026] In a spatial domain, a CSI report may include one or more types of CSIs. For example, the CSI may include at least one of a first type (Type 1 CSI) used for single-beam selection and a second type (Type 2 CSI) used for multi-beam selection. A single beam may be rephrased as a single layer, and a multi-beam as multiple beams. Furthermore, a Type 1 CSI may not assume multi-user multiple input multiple output (MU-MIMO), while a Type 2 CSI may assume multi-user MIMO.

[0027] The above codebooks may include a codebook for Type 1 CSI (also referred to as a Type 1 codebook, etc.) and a codebook for Type 2 CSI (also referred to as a Type 2 codebook, etc.). Furthermore, Type 1 CSI may include Type 1 single-panel CSI and Type 1 multi-panel CSI, and different codebooks (Type 1 single-panel codebook and Type 1 multi-panel codebook) may be specified for each.

[0028] The Upbound Control Information (UCI) type may include at least one of Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), scheduling request (SR), or CSI. The UCI may be carried by PUCCH or by PUSCH.

[0029] In Rel. 15 NR, the UCI may include one CSI part for wideband PMI feedback. CSI report #n includes PMI wideband information, if reported.

[0030] In Rel. 15 NR, the UCI may include two CSI parts for subband PMI feedback. CSI part 1 contains wideband PMI information. CSI part 2 contains one wideband PMI piece and several subband PMI pieces. CSI parts 1 and 2 are encoded separately.

[0031] In Rel. 15 NR, the UE is configured by a higher layer with N (N≧1) CSI reporting settings and M (M≧1) CSI resource settings. For example, a CSI reporting setting (CSI-ReportConfig) includes a resource setting for channel measurement (resourcesForChannelMeasurement), a CSI-IM resource setting for interference (csi-IM-ResourceForInterference), an NZP-CSI-RS resource setting for interference (nzp-CSI-RS-ResourceForInterference), and a report quantity (reportQuantity). Each of the resource settings for channel measurement, the CSI-IM resource setting for interference, and the NZP-CSI-RS setting for interference is associated with a CSI resource setting (CSI-ResourceConfig, CSI-ResourceConfigId). The CSI resource configuration includes a list of CSI-RS resource sets (csi-RS-ResourceSetList, e.g., NZP-CSI-RS resource set or CSI-IM resource set).

[0032] To enable more dynamic channel / interference hypotheses for NCJT, targeting both FR1 and FR2, evaluation and specification of CSI reporting for at least one multi-TRP and multi-panel transmission of DL are being considered.

[0033] In this disclosure, Type 1 and Type I may be interpreted as interchangeable. In this disclosure, Type 2 and Type II may be interpreted as interchangeable.

[0034] In the present disclosure, CSI-RS, periodic CSI-RS (P-CSI-RS), semi-persistent CSI-RS (SP-CSI-RS), and aperiodic CSI-RS (AP-CSI-RS, A-CSI-RS) may be read interchangeably with each other. In the present disclosure, CSI-RS, periodic CSI report (P-CSI report), semi-persistent CSI report (SP-CSI report), and aperiodic CSI report (AP-CSI report, A-CSI report) may be read interchangeably with each other.

[0035] (RRC state) In the [RRC] connected (RRC_CONNECTED) state, when there is no traffic, the UE can receive an RRC release (RRCRelease) message with a suspend configuration (SuspendConfig, FIG. 1) from the NW and stay in the [RRC] inactive (RRC_INACTIVE) state without completely releasing the RRC. If necessary, it can quickly return to the [RRC] connected state by an RRC resume request (RRCResumeRequest) message from the UE or paging from the NW. The UE in the [RRC] inactive state can transition to the [RRC] idle (RRC_IDLE) state by releasing the RRC. The UE in the [RRC] idle state can transition to the [RRC] connected state by a random access procedure (e.g., a 4-step contention-based random access (CBRA) procedure).

[0036] In the present disclosure, state, mode, and the UE [in that state / mode] may be read interchangeably with each other.

[0037] (4-Step CBRA Procedure) The 4-step CBRA procedure (Figure 2) for an idle UE in the RRC idle state is performed as follows. First, the UE transmits Msg1 (PRACH, random access preamble) to the gNB. Then, the UE receives a random access response (RAR, Msg2) from the gNB. The DCI in the PDCCH that schedules the PDSCH carrying the RAR has a CRC scrambled by the RA-RNTI. The UE that successfully receives the RAR transmits Msg3 (PUSCH scheduled by the RAR UL grant) to the gNB. Then, the UE receives Msg4 (UE contention resolution identifier, UE contention resolution identity). The DCI that schedules the Msg4 PDSCH has a CRC scrambled by the TC-RNTI. If Msg4 is successfully decoded and the UE contention resolution identifier in Msg4 matches the common control channel (CCCH) service data unit (SDU) transmitted in Msg3, the UE recognizes CBRA (contention resolution) success (RRC connection establishment) and transmits a HARQ-ACK (ACK) to the gNB on the PUCCH. Then, the value of the C-RNTI is set to the value of the TC-RNTI.

[0038] (In the RRC connected state) In the 4-step CBRA procedure (Figure 3) for a connected UE, from the transmission of Msg1 to the transmission of Msg3, it is the same as the 4-step CBRA procedure for an RRC idle state UE. Then, the UE receives Msg4. The DCI in the Msg4 PDCCH has a CRC scrambled by the C-RNTI. If the Msg4 PDCCH is addressed to the C-RNTI, the UE recognizes CBRA (contention resolution) success.

[0039] The CBRA BFR for the PCell follows the 4-step CBRA procedure for an RRC connected UE.

[0040] (CQI) The 4-bit CQI index reported by the UE in the CSI report is associated with the modulation scheme, coding rate, and resource utilization efficiency, as shown in the 4-bit CQI table (Table C-2) in Figure 4, the 4-bit CQI table 2 (Table C-3) in Figure 5, the 4-bit CQI table 3 (Table C-4) in Figure 6, and the 4-bit CQI table 4 (Table C-5) in Figure 7.

[0041] (L1 / L2 triggered mobility (LTM)) The primary synchronization of LTM is the reduction of interruption time [in RACH-based cell switching]. LTM has several features, including: ◆Handover can be performed without using RACH / RRC reconfiguration / MAC reset. ◆One or more candidate cells are in the same CU as the serving cell. ◆One or more candidate cells are on the same or different frequencies as the serving cell.

[0042] After the UE receives the LTM settings from the serving cell, several steps are taken before a cell switch decision is made for one or more candidate cells: ◆ DL synchronization [between the UE and one or more candidate cells] ◆ L1 measurement report ◆ UL synchronization [between the UE and one or more candidate cells] ◆ TCI status activation [from the serving cell to the UE]

[0043] Subsequently, the serving cell determines the cell switch and, upon selecting one target cell from one or more candidate cells, sends a cell switch command (CSC) MAC CE to the UE. The CSC MAC CE contains several pieces of information about the target cell of the cell switch [from one or more candidate cells], including: ◆ Configuration ID [to indicate the target cell] ◆ TCI status ID ◆ Timing advance (TA) value ◆ CFRA resource index (optional)

[0044] Upon receiving the CSC MAC CE, the UE performs a RACH-based or RACH-less cell switch (connection) to the target cell. The UE then sends the first subsequent UL to the serving cell.

[0045] (Event-Based Beam Reporting) In future wireless communication systems, support for event-based beam reporting is being considered. Event-based beam reporting may also be called event-triggered beam reporting, and may refer to UE-initiated beam reporting initiated by a UE (Unified Energy Operator).

[0046] Examples of events defined in existing 5G NR include the following. Note that events are not limited to those listed below, and other new events may be defined. ・Event A1: The serving [cell] measurement result is better than the threshold. ・Event A2: The serving [cell] measurement result is worse than the threshold. ・Event A3: The neighboring [cell] measurement result (the measurement result plus an offset) is better than the SpCell measurement result (the measurement result plus an offset). ・Event A4: The neighboring [cell] measurement result (the measurement result plus an offset) is better than the threshold. ・Event A5: The SpCell measurement result is worse than the first threshold, and the neighboring [cell] measurement result (the measurement result plus an offset) is better than the second threshold. - Event A6: A case where the measurement result of an adjacent cell (the measurement result plus an offset) is better than the measurement result of the serving cell (Secondary Cell (SCell)) (the measurement result plus an offset). - Event B1: A case where the measurement result of an adjacent cell between RATs is better than the threshold. - Event B2: A case where the measurement result of PCell is worse than the first threshold, and the measurement result of an adjacent cell between RATs (the measurement result plus an offset) is better than the second threshold.

[0047] (Issue) DL data may be sent from the gNB before receiving the CSI-RS for the CSI. In particular, in the case of mobility, the UE receives the PDSCH during the transition to completion. For such DL data, the NW will use a robust modulation and coding scheme (MCS), which may result in reduced communication performance / throughput compared to DL data in a connected state. To avoid this, it is preferable that a channel quality indicator (CQI) is reported before the RRC connection.

[0048] However, currently, measurement / reporting is impossible because RRC connectivity has not been established before the completion of mobility.

[0049] Therefore, the inventors devised a method for CSI reporting in cases where the device is not connected.

[0050] The embodiments of this disclosure will be described in detail below with reference to the drawings. Each wireless communication method according to the embodiments may be applied individually or in combination.

[0051] (Various substitutions) In this disclosure, words enclosed in parentheses () may indicate an explanation of the preceding word (e.g., an explanation of spelling), a paraphrase, a specific example, or supplementary explanation. Also, in this disclosure, words enclosed in square brackets [] may be interpreted as part of the overall meaning of the text, or they may be interpreted as being excluded (ignored). Note that parentheses () and square brackets [] may be used for purposes / meanings other than those described above.

[0052] In this disclosure, "A / B" and "at least one of A and B" may be interpreted as mutually exclusive. In this disclosure, "A / B / C" may mean "at least one of A, B, and C".

[0053] In this disclosure, terms such as notice, activate, deactivate, indicate (or specify), select, configure, update, and determine may be interpreted interchangeably. In this disclosure, terms such as support, control, controllable, operate, and capable of operating may be interpreted interchangeably.

[0054] In this disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher-layer parameters, fields, Information Elements (IE), settings, etc., may be interpreted interchangeably. In this disclosure, Medium Access Control elements (MAC Control Elements (CE)), update commands, activation / deactivation commands, etc., may be interpreted interchangeably.

[0055] In this disclosure, the upper layer signaling may be any or a combination thereof, such as Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, and other messages (e.g., messages from the core network, such as positioning protocol messages (e.g., NR Positioning Protocol A (NRPPPa) / LTE Positioning Protocol (LPP)) messages).

[0056] In the present disclosure, MAC signaling may use, for example, a MAC control element (MAC CE), a MAC Protocol Data Unit (PDU), etc. Broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0057] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), etc.

[0058] In the present disclosure, ceil(x), ceiling function, ceiling operation may be read as each other. In the present disclosure, floor(x), floor function, floor operation may be read as each other. In the present disclosure, ceil(x), floor(x) may be read as each other. In the present disclosure, sqrt(x), square root of x, root x may be read as each other. In the present disclosure, x mod y, mod(x, y), mod function, modulo operation may be read as each other. In the present disclosure, Σ i=M M+N-1 f(i), Σ i=M M+N-1 f i , the summation of f(i) or f over i = M, M + 1,..., M + N - 1 i f(M) + f(M + 1) +... + f(M + N - 1), f M +f M+1 +...+f M+N-1, can be read interchangeably. C(n,k) is the number of combinations of choosing k values ​​from n values ​​(combinatorial coefficient), binomial coefficients, n C k , C n k , may be interpreted as mutually exclusive. In this disclosure, x / / y and floor(x / y) may be interpreted as mutually exclusive.

[0059] In this disclosure, A b The notations A_b, Ab, and A with a b placed to the lower right may be interpreted as interchangeable. In this disclosure, A c The notation A^c, with a c superscripted above A, may be interpreted as interchangeable. In this disclosure, A b c The notation A_b^c, where b is placed to the lower right of A and c is placed to the upper right of A, may be interpreted as being interchangeable. In this disclosure, x ~ x may be represented by placing a ~ above x, or it may be called x tilde. In this disclosure, x - x may be represented by placing a hyphen above it, or it may be called an x-bar. In this disclosure, x ＾ This can also be represented by placing a caret (^) above x, or it may be called an x-hat.

[0060] In this disclosure, FR may be at least one of FR1, FR2, FR2-1, FR2-2, FR3, subterahertz, and terahertz. In this disclosure, the frequency range corresponding to FR1 may be 410–7125 MHz. In this disclosure, FR2 may include FR2-1 and FR2-2, the frequency range corresponding to FR2-1 may be 24250–52600 MHz, and the frequency range corresponding to FR2-1 may be 52600–71000 MHz.

[0061] In this disclosure, cell group, serving cell group, master cell group (MCG), and secondary cell group (SCG) may be interpreted interchangeably. L1 / L2, L1 / L2 signaling, and DCI / MAC CE may be interpreted interchangeably. A serving cell may be replaced with a cell that transmits a PDSCH. A candidate cell may mean a cell that is a candidate to become a serving cell through L1 / L2 inter-cell mobility. L1 / L2-triggered mobility (or Lower layer triggered mobility, LTM) and L1 / L2 inter-cell mobility may be interpreted interchangeably.

[0062] In this disclosure, cell, PCI, serving cell, source serving cell, source cell, CC, BWP, BWP within CC, and band may be interpreted interchangeably. In this disclosure, cell, PCI, cell with additional PCI, additional cell, other cell, non-serving cell, cell with a different PCI, candidate cell, candidate serving cell, cell with a PCI different from the current serving cell's PCI, another serving cell, and target cell may be interpreted interchangeably. A target cell may be a cell selected from among several candidate cells. In this disclosure, switch, change, and update may be interpreted interchangeably. A serving cell may be interpreted as a serving cell before a switch or a serving cell after a switch.

[0063] In this disclosure, "transmission" and "reception" may be interpreted interchangeably.

[0064] In this disclosure, MAC CE, UCI, cell switching command, beam switching command, MAC CE for beam reporting, and MAC CE for cell switching may be interpreted as interchangeable.

[0065] In this disclosure, the measured RS may be the QCL source RS in an active TCI state / indicated TCI state.

[0066] In this disclosure, the terms event-based beam reporting, event-triggered beam reporting, event-driven beam reporting, UE-triggered beam reporting, UE-initiated beam reporting (UEIBR), UE-initiated beam management (UEIBM), beam reporting, CSI reporting, UEIBR, CSI relating to UEIBR, UEIBR-CSI, UEIBR-UCI, reporting, MAC CE, beam reporting MAC CE, UCI, CSI, and PUSCH may be interpreted as interchangeable. In this disclosure, CSI relating to UEIBR / UCI may be referred to as UEIBR-CSI / UCI. In this disclosure, "other" UCI (or simply "UCI") may mean a UCI separate from the CSI / UCI relating to the UEIBR.

[0067] In this disclosure, indicated TCI state, active TCI state, activated TCI state, configured TCI state, RS set in RRC, beam may be interpreted as one another.

[0068] In this disclosure, Msg1 (Message 1, Msg.1), RACH, PRACH (preamble), and Random Access Preamble may be interpreted as interchangeable. In this disclosure, Msg2 (Message 2, Msg.2), RAR, RAR PDSCH and at least one PDCCH scheduling it, and RAR UL Grant may be interpreted as interchangeable. In this disclosure, Msg3 (Message 3, Msg.3), PUSCH carrying the RRC Setup Request message, and Msg3 PUSCH may be interpreted as interchangeable. In this disclosure, Msg4 (Message 4, Msg.4), PDSCH carrying the RRC Setup message, Msg4 PDSCH, and PDSCH received after sending Msg3 PUSCH may be interpreted as interchangeable.

[0069] In this disclosure, the terms synchronization signal (SS), PSS, SSS, PBCH, synchronization signal block (SSB), SS / PBCH block, SSB index, SS / PBCH block index, candidate SS / PBCH block index, CSI-RS, CSI-RS resource, and CSI-RS resource index may be interpreted as interchangeable.

[0070] In this disclosure, the terms "random access (RA) procedure" and "RACH procedure" may be used interchangeably.

[0071] (Wireless communication method) Early CSI reporting / reference signals may be defined that can be transmitted from the UE before connection / transition to a target in order to notify (allow the target of the NW / cell) of the CSI (e.g., CQI indicating an available MCS). A DL / UL reference signal (RS) for measuring the early CSI may be defined. Early CSI reporting of the target cell for mobility may be defined. The UE may receive information [from the NW] for receiving or transmitting signals for the target of the NW or cell to acquire the CSI. The UE / NW may control the receiving or transmitting based on that information in the state before connecting to the target.

[0072] The target may be at least one of the [destination / transition destination] NW, [candidate / target] cell [of gNB]. The signal for the target to acquire CSI may be at least one of [DL / UL] DMRS, SSB (SS / PBCH block), SRS, CSI-RS. The information for receiving or transmitting that signal may be a setting / configuration / trigger / instruction / notification / SIBx (x is an integer of 1 or more) for early CSI reporting / [CSI] reporting setting / [CSI / RS] [resource] setting / LTM setting / . The state before connecting to the target may be at least one of the [RRC] idle state and [RRC] inactive state. The CSI may include at least one of CRI, RI, PMI, LI, CQI, L1-RSRP, and L1-SINR.

[0073] <Assumptions> Each embodiment may be based on the following assumptions: ◆ The UE is connected before entering an idle or inactive state. ◆ In the idle state, the UE clears all previous RRC configuration information, and the NW clears all previous UE capability reports. ◆ In the inactive state, the UE retains all previous RRC configuration information, and the NW retains all previous UE capability reports, but the NW cannot utilize the UE capability reports unless it has obtained the UE ID (or information related to the UE IDk, e.g., I-RNTI contained in Msg3).

[0074] <Embodiment 1> This embodiment relates to setting / configuration for early CSI reporting before RRC connection is completed.

[0075] According to this embodiment, the UE can properly configure early CSI reporting before RRC connection and properly transmit UL signals.

[0076] This embodiment may be based on at least one of the following multiple options x.

[0077] <<Option 1>> The UE may expect that a specific event will set / trigger an early CSI report. The specific event may include at least one of the following options 1-x:

[0078] <<<Option 1-1>>> One or more [DL] messages used in the RACH procedure instruct the UE to report an early CSI. The message may include at least one of the following options 1-1-x / variations.

[0079] ◆Option 1-1-1: Msg2. The message may be, for example, at least one of RAR MAC CE, PDCCH scheduling RAR, or PDSCH transporting RAR.

[0080] ◆Option 1-1-2: Msg4. The message may be, for example, PDCCH scheduling Msg4, Msg4 PDSCH, or at least one of these.

[0081] ◆Variations: In this disclosure, being triggered by Msg2 / 4 may also include being triggered within a DCI / MAC CE after Msg2 / 4. The DCI may have a CRC scrambled by a specific RNTI.

[0082] <<<Option 1-2>>> Random access based on information within SIBx [Procedure].

[0083] <<<Option 1-3>>> The network instructs / configures the UE to perform at least one of the following: RRC reconfiguration and RRC connection reconfiguration.

[0084] <<<Option 1-4>>> The UE sends a measurement report to the NW triggered by the occurrence of a specific event. The specific event may include at least one of the following: inter-RAT events (events B1, B2), intra-RAT events (events A1-A6), and events newly introduced [in Rel. 19 / 20]. The specific event may include at least one of the following: event Dx, conditional event Ax, events related to the MIMO-oriented UEIBR (e.g., event x), and events related to the mobility-oriented UEIBR (e.g., event LTMx) (where x is an integer of 1 or more).

[0085] <<<Note>>> In the NW / cell to which the UE transitions / connects, the relationship between the UE and the NW (the state of the UE) may be at least one of the following states: ◆ RRC idle state. ◆ RRC inactive state.

[0086] <<Option 2>> If early CSI reporting is configured, the UE may be expected to report early CSI by a specific signal. The specific signal may include at least one of the following options 2-x:

[0087] <<<Option 2-1>>> One or more [UL] messages used within the RACH procedure. The messages may be, for example, at least one of PUSCH (Msg3) scheduled by Msg2 (RAR UL grant), PUCCH for sending HARQ-ACK in response to Msg4, and other UL signals within the RACH procedure.

[0088] <<<Option 2-2>>> A UL signal on PUSCH scheduled by DCI format 0_0 / 1_0 sent after the completion of the RACH procedure. The UL signal may be, for example, at least one of UE capability [signaling / message], RRC setup complete [signal / message], and other UL signals.

[0089] <<Option 3>> The UE may assume that the [Early CSI] report is sent at a specific time or time slot after the [reporting] instruction / notification / trigger. This option may be based on at least one of the following options 3-x.

[0090] <<<Option 3-1>>> The UE / NW may assume that an early CSI will be reported within X slots after the NW / UE instructs / notifies / triggers it.

[0091] <<<Option 3-2>>> The NW / UE may assume that the time between the [reporting] instruction / notification / trigger and the early CSI report is X slots or less.

[0092] <<Option 4>> Early CSI reporting may be defined as a CSI report that includes at least one CSI / reported quantity of CRI, RI, PMI, CQI, LI, L1-RSRP, and L1-SINR.

[0093] <<Option 5>> Early CSI reporting may be defined as a CSI report that does not include at least one CSI / reported quantity of CRI, RI, PMI, LI, L1-RSRP, and L1-SINR.

[0094] <<Option 6>> With respect to the reported CQI values / indexes, the UE may assume at least one of the following features: ◆ The UE may report the modulation scheme by a CQI index having a size of 4 bits / 3 bits / 2 bits / 1 bit using a newly defined table [in the specification]. ◆ The newly defined table may include BPSK / QPSK / 16QAM / 64QAM / 256QAM / 1024QAM as modulation schemes. Figure 8 shows an example of a newly defined CQI table (Table D-1). In Table D-1, CQI index = 1 may be associated with the BPSK modulation scheme, or with any of QPSK / 16QAM / 64QAM / 256QAM / 1024QAM. In table D-1, the CQI index = {1,3,7,15} is not associated with the BPSK modulation scheme, but may be associated with any of QPSK / 16QAM / 64QAM / 256QAM / 1024QAM. Multiple tables may be defined to correspond to multiple combinations of the bit size of the CQI index and the modulation scheme. In this case, the UE may assume that which of the multiple tables is being referenced is notified by at least one of one of the following: one or more messages in the RACH procedure and the setting of an early CSI report. The message may be, for example, at least one of the following: PDCCH scheduling Msg2 / 4, PDSCH carrying Msg2 / 4, RRC reset, and RRC connection reset.

[0095] <Embodiment 2> This embodiment relates to a reference signal (RS) for measuring CSI reported before RRC connection.

[0096] According to this embodiment, the UE can appropriately determine the RS used to calculate the CSI content before the completion of the RRC connection.

[0097] The UE may assume that the NW will notify it of a measurement [reference] signal for CSI reporting before RRC connection. The measurement signal may be based on at least one of the following options x:

[0098] <<Option 1>> The UE may expect to be notified by the NW to measure the CQI of the destination / connection destination (before the transition / connection) NW / cell using [DL]DMRS.

[0099] UE may also calculate L1-SINR using DMRS.

[0100] The UE may assume that its DMRS is one of the following options 1-x:

[0101] ◆Option 1-1: DMRS for PDCCH scheduling Msg2 / 4 within the RACH procedure.

[0102] ◆Option 1-2: DMRS for PDSCH to transport Msg2 / 4 within the RACH procedure.

[0103] ◆Options 1-3: At least one DMRS for PDCCH that schedules Msg2 / 4 within the RACH procedure, and at least one DMRS for PDSCH that carries Msg2 / 4 within the RACH procedure. If there are multiple DMRSs, the UE may select the DMRS having the largest (highest) or smallest (lowest) number of layers / ports from among the multiple DMRSs to be used for CQI calculations.

[0104] The UE may be expected to measure at least one of the following several early CSI reporting contents / volumes: ◆RI: The UE may refer to several ports configured with DMRS for calculating RI. ◆PMI: The UE may assume that the identity matrix is ​​used as the precoder (precoding matrix). ◆CQI: The UE may derive the CQI from the L1-SINR and PMI.

[0105] <<Option 2>> The UE may expect to be notified by the NW to measure the CQI of the destination / connection destination (before the transition / connection) NW / cell using SSB.

[0106] UE may calculate L1-SINR using SSB for inter-frequency / intra-frequency measurements.

[0107] The UE may be expected to measure at least one of the following early CSI reporting content / volume: ◆RI: The UE may assume RI = 1. ◆PMI: The UE may assume that the identity matrix is ​​used as the precoder (precoding matrix). ◆CQI: The UE may derive the CQI from L1-SINR and PMI.

[0108] <<Option 3>> If the UE does not set / instruct a measurement RS for CSI reporting before RRC connection, the UE may use a default RS for measuring CSI before RRC connection. The default RS may be an RS resource from an SS / PBCH block having the same SS / PBCH block index as the SS / PBCH block that the UE uses to acquire MIB, or it may be an RS resource from an SS / PBCH block from which the UE acquires time and frequency synchronization for the secondary cell.

[0109] <<Option 4>> The UE may use SRS to transmit signals to the NW [for calculating the modulation scheme to be used] (SRS-based early CSI report, SRS-based early CSI acquisition).

[0110] This option may be based on at least one of the following options 4-x.

[0111] ◆Option 4-1: When the UE transitions from an RRC idle state to an RRC connected state, the UE may expect to be triggered by one or more messages of the RACH procedure, [as in Option 1-1 of Embodiment 1] to perform an SRS-based early CSI report.

[0112] ◆Option 4-2: When the UE transitions from an RRC inactive state to an RRC connected state, the UE may expect to be triggered by one or more messages of the RACH procedure [as described in Option 1-1 of Embodiment 1], or to be triggered by information of parameters previously set (in the previous RRC connected state).

[0113] UE may expect that the use of the SRS resource [set] [for early CSI reporting] will be antenna switching, beam management, codebook, and non-codebook.

[0114] UE may assume an A / AP / SP SRS resource [set] for early CSI reporting.

[0115] The UE may expect to transmit an SRS in at least one of the following resources: one or more [UL] messages used within a RACH procedure, and a UL signal on PUSCH scheduled by DCI format 0_0 / 1_0, which is transmitted after the completion of the RACH procedure.

[0116] In Option 4, the NW may, as an implementation, calculate the CQI based on information from the SRS [and TDD reciprocity].

[0117] A [UL]DMRS may be used for CQI measurement instead of an SRS. This DMRS may be a DMRS for PUCCH / PUSCH.

[0118] <<Option 5>> The UE may expect to be notified by the NW to measure the CQI of the destination / connection destination (before the transition / connection) NW / cell using CSI-RS.

[0119] UE may calculate L1-SINR using CSI-RS for inter-frequency / intra-frequency measurements.

[0120] The UE may be expected to transition from an RRC inactive state to an RRC connected state. That is, the UE may be expected to use the parameter information previously set (in the previous RRC connected state) [for CSI-RS / CQI measurement] [available to the NW only if the NW has some information related to the UE ID].

[0121] The signals used for early CSI reporting can be configured on a CSI-RS resource or CSI-RS resource set basis.

[0122] UE may assume a CSI-RS resource [set] for A / AP / SP [for early CSI reporting].

[0123] <<Other Features>> In the NW / cell to which the UE transitions / connects, the relationship between the UE and the NW (the state of the UE) may be at least one of the following states: ◆ For options 1 to 4, at least one of the RRC idle state and the RRC inactive state. ◆ For option 5, the RRC connected state.

[0124] In Embodiment 2, "CQI" may be replaced with any CSI content / reported quantity. This CSI content / reported quantity may include, for example, at least one of CRI, RI, PMI, LI, CQI, L1-RSRP, and L1-SINR.

[0125] When a UE sends a CSI report, the UE / NW may expect to operate according to at least one of the following behaviors: ◆ The UE / NW does not expect the time or time slot between the RS [measured for early CSI reporting] and the early CSI report to be greater than a certain amount. For example, the NW / UE may expect that the time between the RS and the early CSI report is less than or equal to X slots. ◆ In option 2 of Embodiment 2, if an AP CSI-RS for L1-SINR calculation is set, the UE / NW may expect that its AP CSI-RS is triggered within Y slots from the early CSI report instruction from the NW.

[0126] <Embodiment 3> This embodiment relates to early CSI reporting of target cells in mobility.

[0127] According to this embodiment, the UE can appropriately report the CSI before transitioning to / connecting to the target cell.

[0128] Early CSI reporting can be applied to mobility / handover / LTM. This embodiment may be based on at least one of the following multiple options x.

[0129] <<Option 1>> A new field may be introduced within the CSC MAC CE to trigger early CSI reporting for a target cell. The CSC MAC CE (cell switch command) indicates a target cell from one or more candidate cells. The new field may trigger early CSI reporting for that target cell.

[0130] <<Option 2>> Embodiment 1, which enables early CSI reporting in Msg2 / 4 or early CSI reporting in DCI after Msg2 / 4, may be adapted within the PRACH procedure in LTM. In LTM, since the UE is in an RRC connected state and holds the RRC parameters, the operation of Embodiment 1 can be simplified compared to the case of RRC idle / RRC inactive state.

[0131] <<Option 3>> Conditions may be defined to trigger early CSI reporting for one or more candidate cells. These conditions may include one of the following examples x, or the result of an AND / OR operation of two or more conditions from the following examples x: ◆ Whether a PDCCH order has been received for the candidate cell. ◆ Whether the TCI status for the candidate cell is activated. ◆ Whether a specific function has been set for the candidate cell. ◆ Whether the conditions for event-triggered reporting / conditional LTM are met for the candidate cell.

[0132] <<Option 4>> The DL signal may trigger early CSI reporting for one or more candidate cells preceding the CSC MAC CE. The DL signal may be, for example, a newly introduced DCI / MAC CE or an extension of an existing DCI / MAC CE.

[0133] <Embodiment 4> This embodiment relates to early CSI reporting using CSI-RS.

[0134] For early CSI reporting using CSI-RS, the UE may expect to configure the CSI reporting settings.

[0135] According to this embodiment, the UE can appropriately configure early CSI reporting using CSI-RS.

[0136] The CSI reporting configuration may be based on at least one of the following multiple embodiments 4-x.

[0137] <<Embodiment 4-1>> The CSI reporting settings for early CSI reporting may include at least one of the following:

[0138] ◆Content 1: RS [Resource] setting. This may indicate an RS for at least one of the following: a channel measurement resource (CMR) and an interference measurement resource (IMR).

[0139] ◆Content 2: Reporting settings. This may include, for example, at least one of the following: reportQuantity, CQI table (cqi_Table), and reporting configuration type (reportconfigType, time domain behavior). reportconfigType may be limited to "aperiodic". The UE may assume that reportQuantity includes at least cqi.

[0140] ◆Content 3: Any other content within the RRC IE CSI-ReportConfig in the existing specifications.

[0141] <<Embodiment 4-2>> The UE may assume that the CSI reporting settings are indicated / configured by at least one of the following multiple options x:

[0142] ◆Option 1: Content defined in the specifications.

[0143] ◆Option 2: SIBx.

[0144] ◆Option 3: Content defined in the specification and specific instructions. For example, a combination of options 1 and 2. Multiple patterns [of CSI reporting settings] may be defined as content defined in the specification, and one of the multiple patterns may be determined by a specific instruction. The specific instruction may be an SIBx or one of the instructions for options 1-1 to 1-4 of Embodiment 1.

[0145] ◆Option 4: RRC Release (RRCRelease) [Messages / RRC IE] Suspend setting (SuspendConfig).

[0146] <Supplement> <<Notification of Information to UE>> In the embodiments described above, notification of any information from the Network (NW) (e.g., Base Station (BS)) to the UE (in other words, reception of any information from the BS at the UE) may be performed using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE, RRC messages, LTE positioning protocol (LPP) messages), specific signals / channels (e.g., DCI, PDCCH, PDSCH, reference signals), or a combination thereof.

[0147] When the above notification is made by a MAC CE, the MAC CE may be identified by the inclusion of a new Logical Channel ID (LCID) not defined in existing standards in the MAC subheader. The MAC CE may be an extension of an existing MAC CE. For example, the MAC CE may introduce a new octet into an existing MAC CE.

[0148] If the above notification is made by DCI, the notification may be made by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used to scramble the Cyclic Redundancy Check (CRC) bits assigned to the DCI, or the format of the DCI. The specific field may be an existing DCI field or a new DCI field. The RNTI may be an existing RNTI or a new RNTI. The format of the DCI may be an existing DCI format or a new DCI format.

[0149] Furthermore, notification of any information to the UE in the above-described embodiment may be periodic, semi-persistent (triggered by the UE or gNB), or aperiodic (triggered by the UE or gNB).

[0150] In the embodiments described above, the UE may receive information from the NW of at least one of the following QCL rules: ◆ QCL Type A ◆ QCL Type B ◆ QCL Type C ◆ QCL Type D

[0151] In the embodiments described above, the QCL source RS for each QCL type may be at least one of the following RSs: ◆SSB ◆CSI-RS with / without repetition ◆TRS ◆DMRS for PDCCH / PDSCH

[0152] In the embodiments described above, information from the network may be set / instructed by the following methods: ◆ Common to multiple UEs, or individual to a UE ◆ Cell-specific, or common to multiple cells ◆ Per UE / Per CC / Per BWP / Per band / Per cell / Per cell group (CG)

[0153] <<Notification of Information from UE>> Notification of any information from the UE to the NW in the embodiments described above (in other words, transmission / reporting of any information from the UE to the BS) may be performed using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE, RRC messages, LPP messages), specific signals / channels (e.g., UCI, PUCCH, PUSCH, PRACH, reference signals), or a combination thereof.

[0154] When the above notification is made by a MAC CE, the MAC CE may be identified by the inclusion of a new LCID not specified in existing standards in the MAC subheader. The MAC CE may be an extension of an existing MAC CE. For example, the MAC CE may introduce a new octet into an existing MAC CE.

[0155] If the above notice is made by the UCI, the notice may be transmitted using PUCCH or PUSCH.

[0156] Furthermore, the notification of any information from the UE in the above-described embodiments may be periodic, semi-persistent (triggered by the UE or gNB), or aperiodic (triggered by the UE or gNB).

[0157] <<Regarding the application of each embodiment>> In UE / BS, specific (one or more) processes / operations / controls / assumptions / information for at least one of the embodiments described above may be applied (or used) if any or more of the following conditions are met: ◆ A higher-layer parameter indicating the specific process / operation / control / assumption / information is set; ◆ The specific process / operation / control / assumption / information is determined based on the relevant higher-layer parameter; ◆ The specific process / operation / control / assumption / information is instructed / specified / activated / triggered by MAC CE / DCI / UCI / Resource / Channel / RS; ◆ A specific UE capability indicating (or related to) the specific process / operation / control / assumption / information is reported or supported; ◆ The application of the specific process / operation / control / assumption / information is determined based on specific conditions.

[0158] The above-mentioned specific UE capabilities may represent at least one of the following: ◆ Supporting the above-mentioned specific processing / operation / control / assumption / information; ◆ The capability of each embodiment; ◆ The capability of each option in each embodiment, or the capability of a combination of multiple options in each embodiment; ◆ The capability of each choice in each embodiment, or the capability of a combination of multiple choices in each embodiment.

[0159] Furthermore, the above-mentioned specific UE capability may be a capability that applies across all frequencies (commonly regardless of frequency), a capability per frequency (e.g., one or a combination thereof, such as cell, band, band combination, BWP, component carrier, etc.), a capability per frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), a capability per subcarrier spacing (SCS), or a capability per feature set (FS) or feature set per component-carrier (FSPC).

[0160] Furthermore, the specific UE capabilities described above may be capabilities that apply across all duplexing schemes (common to all duplexing schemes regardless of the duplexing scheme), or they may be capabilities specific to each duplexing scheme (e.g., Time Division Duplex (TDD), Frequency Division Duplex (FDD)).

[0161] If the above conditions are not met, UE / BS may follow the behavior specified in existing 3GPP releases.

[0162] Information regarding whether one or more of the above embodiments / options / choices / examples apply / are used, or which of the above embodiments / options / choices / examples apply / are used, may be based on several of the following methods: ◆ The information is set by one or more higher layer parameters / RRC IEs. ◆ The information is determined by one or more relevant higher layer parameters / RRC IEs. ◆ The information is indicated by MAC CE / DCI. ◆ The information is determined based on one or more UE capabilities. ◆ The information is described / defined in the specification. ◆ The information is based on conditions described / defined in the specification. ◆ The information is determined by a combination of several of the above methods. For example, the information is determined by the setting / indication of higher layer parameters / MAC CE / DCIs and reported by UE capabilities.

[0163] The above multiple embodiments / options / choices may be combined into a single embodiment / option / choice.

[0164] In the embodiments described above, the measured RS may be a QCL source RS in an active TCI state / indicated / unified TCI state.

[0165] (Notes) The following inventions are added with respect to one embodiment of the present disclosure. <Note 1> A terminal having: a receiving unit that receives information for receiving or transmitting a signal for a network or cell target to acquire channel state information (CSI); and a control unit that controls the receiving or transmitting based on the information in a state prior to connection with the target. <Note 2> The terminal according to Note 1, which controls the receiving based on at least one of a downlink message in a random access procedure, a message for radio resource control (RRC) resetting, and an event, and reporting based on the receiving. <Note 3> The terminal according to Note 1 or Note 2, wherein the signal is one of a downlink demodulation reference signal (DMRS), a synchronization signal block, a sounding reference signal (SRS), and a channel state information (CSI)-reference signal (RS). <Note 4> The terminal according to any one of Notes 1 to 3, wherein the target is a target cell in mobility. <Note A> A base station having a transmitting unit that transmits information for receiving or transmitting a signal for a network or cell target to acquire channel status information (CSI), and a control unit that controls the receiving or transmitting based on the information in a state before connecting to the target. <Supplement> The terminal in Notes 1 to 4 may be a user terminal 20. The receiving / transmitting unit in Notes 1 to 4 may be a transmitting / receiving unit 220. The control unit in Notes 1 to 4 may be a control unit 210. The base station in Note A may be a base station 10. The receiving / transmitting unit in Note A may be a transmitting / receiving unit 120. The control unit in Note A may be a control unit 110.

[0166] (Wireless Communication System) The configuration of a wireless communication system according to one embodiment of this disclosure will be described below. In this wireless communication system, communication is performed using any of the wireless communication methods according to the above embodiments of this disclosure, or a combination thereof.

[0167] Figure 9 shows an example of a schematic configuration of a wireless communication system according to one embodiment. The wireless communication system 1 (which may also be simply called system 1) may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc., as specified by the Third Generation Partnership Project (3GPP).

[0168] Furthermore, the wireless communication system 1 may support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and the like.

[0169] In EN-DC, the LTE (E-UTRA) base station (eNB) is the Master Node (MN), and the NR base station (gNB) is the Secondary Node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0170] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity where both MN and SN are NR base stations (gNB) (NR-NR Dual Connectivity (NN-DC))).

[0171] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with relatively wide coverage, and base stations 12 (12a-12c) located within the macrocell C1 that form a small cell C2 that is narrower than the macrocell C1. User terminals 20 may be located within at least one cell. The arrangement, number, shape, size, etc., of each cell and user terminal 20 are not limited to the configuration shown in the figure. Hereinafter, when base stations 11 and 12 are not distinguished, they will be collectively referred to as base station 10.

[0172] The wireless communication system 1 may utilize Multi Input Multi Output (MIMO). For example, one cell may be formed by one antenna / base station 10, or by multiple antennas / base stations 10. One [virtual] cell (which may be called a supercell, for example) may be composed of multiple [virtual] cells (which may be called subcells, for example). A supercell may correspond to a cell with a fixed physical range, and a subcell may correspond to a cell whose physical range fluctuates quasi-statically / dynamically. In this case, the wireless communication system 1 may be called a cell-free system.

[0173] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of Carrier Aggregation (CA) using multiple Component Carriers (CC) and Dual Connectivity (DC).

[0174] Each CC may be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). A macrocell C1 may be included in FR1, and a small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band above 24 GHz. Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may be in a frequency band higher than FR2.

[0175] Furthermore, the user terminal 20 may communicate in each CC using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD).

[0176] Multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with Common Public Radio Interface (CPRI), X2 / Xn interface, etc.) or wireless (e.g., NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, base station 11, which is the upstream station, may be called an Integrated Access Backhaul (IAB) donor, and base station 12, which is the relay station, may be called an IAB node.

[0177] Base station 10 may be connected to the core network 30 via other base stations 10 or directly. The core network 30 may include at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), etc.

[0178] The core network 30 may include network functions (NF) such as User Plane Function (UPF), Access and Mobility Management Function (AMF), Session Management Function (SMF), Unified Data Management (UDM), Application Function (AF), Data Network (DN), Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM). Multiple functions may be provided by a single network node. Furthermore, communication with an external network (e.g., the Internet) may occur via the DN.

[0179] The user terminal 20 may be a terminal that supports at least one of the following communication methods: LTE, LTE-A, 5G, etc.

[0180] In the wireless communication system 1, an orthogonal frequency division multiplexing (OFDM)-based wireless access scheme may be used. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-OFDM), etc., may be used in at least one of the downlink (DL) and uplink (UL).

[0181] The wireless access method may also be called a waveform. In wireless communication system 1, other wireless access methods (for example, other single-carrier transmission methods, other multi-carrier transmission methods) may be used for the UL and DL wireless access methods.

[0182] In the wireless communication system 1, a Physical Downlink Shared Channel (PDSCH), a Broadcast Channel (PBCH), or a Physical Downlink Control Channel (PDCCH) may be used as the downlink channel, which is shared by each user terminal 20.

[0183] Furthermore, in the wireless communication system 1, the uplink channel may include a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), a Physical Random Access Channel (PRACH), or the like, all of which are shared by each user terminal 20.

[0184] User data, higher-layer control information, and System Information Blocks (SIBs) are transmitted via PDSCH. User data and higher-layer control information may also be transmitted via PUSCH. Furthermore, Master Information Blocks (MIBs) may be transmitted via PBCH.

[0185] Lower-layer control information may be transmitted by PDCCH. The lower-layer control information may include, for example, Downlink Control Information (DCI) which includes scheduling information for at least one of PDSCH and PUSCH.

[0186] Furthermore, the DCI that schedules PDSCH may be called DL assignment, DL DCI, etc., and the DCI that schedules PUSCH may be called UL grant, UL DCI, etc. Furthermore, PDSCH may be read as DL data, and PUSCH may be read as UL data.

[0187] PDCCH detection may utilize a Control Resource Set (CORESET) and a search space. A CORESET corresponds to the resources used to search for DCIs. A search space corresponds to the search area and search method for PDCCH candidates. A single CORESET may be associated with one or more search spaces. A UE may monitor CORESETs associated with a given search space based on the search space configuration.

[0188] A single search space may correspond to one or more PDCCH candidates corresponding to aggregation levels. One or more search spaces may be referred to as a search space set. In this disclosure, "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," and "CORESET configuration" may be interpreted interchangeably.

[0189] PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery acknowledgment information (for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). PRACH may transmit a random access preamble for establishing a connection with the cell.

[0190] In this disclosure, downlinks, uplinks, etc., may be expressed without the prefix "link." Also, the prefix "physical" may be omitted from the names of various channels.

[0191] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc., may be transmitted. In the wireless communication system 1, the DL-RS may include a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc.

[0192] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS / PBCH block, SS Block (SSB), etc. Note that SS, SSB, etc. may also be called reference signals.

[0193] Furthermore, in the wireless communication system 1, the uplink reference signal (UL-RS) may include a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. The DMRS may also be called a user-specific reference signal (UE-specific Reference Signal).

[0194] (Base Station) Figure 10 shows an example of the configuration of a base station according to one embodiment. The base station 10 includes a control unit 110, a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission line interface 140. Note that one or more of the control unit 110, the transmitting / receiving unit 120, the transmitting / receiving antenna 130, and the transmission line interface 140 may be provided.

[0195] In this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each part described below may be omitted.

[0196] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, control circuit, etc., as described based on common understanding in the technical field related to this disclosure.

[0197] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc., using the transmitting / receiving unit 120, transmitting / receiving antenna 130, and transmission path interface 140. The control unit 110 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transmitting / receiving unit 120. The control unit 110 may also perform call processing of communication channels (setting, releasing, etc.), status management of the base station 10, management of wireless resources, etc.

[0198] The transmitting / receiving unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transmitting / receiving unit 120 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0199] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or it may be composed of a transmitting unit and a receiving unit. The transmitting unit may consist of a transmitting processing unit 1211 and an RF unit 122. The receiving unit may consist of a receiving processing unit 1212, an RF unit 122 and a measuring unit 123.

[0200] The transmitting and receiving antenna 130 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0201] The transmitting / receiving unit 120 may transmit the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 120 may also receive the uplink channel, uplink reference signal, etc.

[0202] The transmitting / receiving unit 120 may use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like to form at least one of the transmitting beam and the receiving beam.

[0203] The transmitting / receiving unit 120 (transmission processing unit 1211) may perform processing on data and control information acquired from the control unit 110, for example, at the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer (e.g., RLC retransmission control), and the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), to generate a bit sequence to be transmitted.

[0204] The transmitting / receiving unit 120 (transmission processing unit 1211) may perform transmission processing on the bit sequence to be transmitted, such as channel coding (which may include error correction coding), modulation, mapping, filtering, discrete Fourier transform (DFT) processing (if necessary), inverse fast Fourier transform (IFFT) processing, precoding, and digital-to-analog conversion, and output a baseband signal.

[0205] The transmitting / receiving unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 130.

[0206] On the other hand, the transmitting / receiving unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc., on the radio frequency band signal received by the transmitting / receiving antenna 130.

[0207] The transmitting / receiving unit 120 (receiving processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

[0208] The transmitting / receiving unit 120 (measurement unit 123) may perform measurements related to the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc., based on the received signal. The measurement unit 123 may also measure received power (e.g., Reference Signal Received Power (RSRP)), reception quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0209] The transmission path interface 140 may send and receive signals (backhaul signaling) with devices included in the core network 30 (e.g., network nodes that provide NF), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0210] In this disclosure, the transmitting and receiving units of the base station 10 may consist of at least one of a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission path interface 140.

[0211] The base station 10 may be separated into three elements: a Radio Unit (RU), a Distributed Unit (DU), and a Central Unit (CU). For example, the RU may implement RF processing (digital beamforming, digital-to-analog conversion, analog beamforming, etc.) and lower-level physical layer functions (precoding, IFFT, FFT, etc.). The DU may implement higher-level physical layer functions (coding to resource element mapping, etc.), MAC layer functions, and RLC layer functions. The CU may implement PDCP layer, Service Data Adaptation Protocol (SDAP) layer, and RRC layer functions.

[0212] In this disclosure, base station 10 may include a single device that implements all the functions of RU, DU, and CU, or it may include multiple devices that each implement some of the functions of RU, DU, and CU and are connected to each other. In this disclosure, base station 10 may be interpreted as RU / DU / CU.

[0213] (User Terminal) Figure 11 shows an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. Note that one or more of the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may be provided.

[0214] In this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each part described below may be omitted.

[0215] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, control circuit, etc., as described based on common understanding in the technical field related to this disclosure.

[0216] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc., using the transmitting / receiving unit 220 and the transmitting / receiving antenna 230. The control unit 210 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transmitting / receiving unit 220.

[0217] The transmitting / receiving unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmitting / receiving unit 220 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0218] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or it may be composed of a transmitting unit and a receiving unit. The transmitting unit may consist of a transmitting processing unit 2211 and an RF unit 222. The receiving unit may consist of a receiving processing unit 2212, an RF unit 222 and a measuring unit 223.

[0219] The transmitting and receiving antenna 230 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0220] The transmitting / receiving unit 220 may receive the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 220 may also transmit the uplink channel, uplink reference signal, etc.

[0221] The transmitting / receiving unit 220 may use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like to form at least one of the transmitting beam and the receiving beam.

[0222] The transmitting / receiving unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc., on data and control information acquired from the control unit 210 to generate a bit sequence to be transmitted.

[0223] The transmitting / receiving unit 220 (transmission processing unit 2211) may perform transmission processing on the bit sequence to be transmitted, such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion, and output a baseband signal.

[0224] Whether or not to apply DFT processing may be based on the transform precoding settings. The transmitting / receiving unit 220 (transmission processing unit 2211) may perform DFT processing as part of the transmission process to transmit a channel (for example, PUSCH) using a DFT-s-OFDM waveform if transform precoding is enabled for that channel, or it may not perform DFT processing as part of the transmission process if transform precoding is not enabled for that channel.

[0225] The transmitting / receiving unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 230.

[0226] On the other hand, the transmitting / receiving unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc., on the radio frequency band signal received by the transmitting / receiving antenna 230.

[0227] The transmitting / receiving unit 220 (receiving processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

[0228] The transmitting / receiving unit 220 (measuring unit 223) may perform measurements related to the received signal. For example, the measuring unit 223 may perform RRM measurement, CSI measurement, etc., based on the received signal. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0229] The measurement unit 223 may derive channel measurements for CSI calculation based on channel measurement resources. Channel measurement resources may be, for example, Non Zero Power (NZP) CSI-RS resources. The measurement unit 223 may also derive interference measurements for CSI calculation based on interference measurement resources. Interference measurement resources may be at least one of the following: NZP CSI-RS resources for interference measurement, CSI-Interference Measurement (IM) resources, etc. CSI-IM may also be called CSI-Interference Management (IM), and may be interpreted interchangeably with Zero Power (ZP) CSI-RS. In this disclosure, CSI-RS, NZP CSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc., may be interpreted interchangeably.

[0230] In this disclosure, the transmitting unit and receiving unit of the user terminal 20 may be composed of at least one of a transmitting / receiving unit 220 and a transmitting / receiving antenna 230.

[0231] (Hardware Configuration) The block diagram used in the description of the above embodiment shows functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may also be realized by combining the above one device or the above multiple devices with software.

[0232] Here, functions include, but are not limited to, judgment, decision, determination, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission may be called a transmitting unit or transmitter. In all cases, as mentioned above, the method of implementation is not particularly limited.

[0233] For example, a base station, user terminal, etc. in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. Figure 12 is a diagram showing an example of the hardware configuration of a base station and user terminal according to one embodiment. The base station 10 and user terminal 20 described above may be physically configured as a computer device including a processor 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0234] In this disclosure, terms such as apparatus, circuit, device, section, and unit are interchangeable. The hardware configuration of the base station 10 and the user terminal 20 may include one or more of the devices shown in the figure, or it may be configured without some of the devices.

[0235] For example, although only one processor 1001 is shown in the diagram, there may be multiple processors. Furthermore, the processing may be performed by one processor, or it may be performed by two or more processors simultaneously, sequentially, or by other means. Note that the processor 1001 may be implemented using one or more chips.

[0236] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, which allows the processor 1001 to perform calculations and control communication via the communication device 1004, or control at least one of reading and writing data in the memory 1002 and storage 1003.

[0237] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may be composed of a central processing unit (CPU) that includes interfaces with peripheral devices, control devices, arithmetic units, registers, etc. For example, at least a part of the control unit 110 (210) and the transmitting / receiving unit 120 (220) described above may be implemented by the processor 1001.

[0238] Furthermore, the processor 1001 reads programs (program code), software modules, data, etc., from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and other functional blocks may be implemented similarly.

[0239] The memory 1002 is a computer-readable recording medium and may consist of at least one of the following: Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. The memory 1002 may also be called a register, cache, or main memory. The memory 1002 can store executable programs (program code), software modules, etc., for carrying out a wireless communication method according to one embodiment of the present disclosure.

[0240] The storage 1003 is a computer-readable recording medium and may consist of at least one of the following: a flexible disk, a floppy disk, a magneto-optical disk (e.g., a Compact Disk (Compact Disc ROM (CD-ROM)), a Digital Use Disk, a Blu-ray (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, stick, key drive), a magnetic stripe, a database, a server, or other suitable storage medium. The storage 1003 may also be called an auxiliary storage device.

[0241] The communication device 1004 is hardware (transmitting / receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc. The communication device 1004 may be configured to include, for example, a high-frequency switch, duplexer, filter, frequency synthesizer, etc., in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmitting / receiving unit 120 (220), transmitting / receiving antenna 130 (230), etc., may be implemented by the communication device 1004. The transmitting / receiving unit 120 (220) may be implemented with physically or logically separated transmitting unit 120a (220a) and receiving unit 120b (220b).

[0242] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, light-emitting diode (LED) lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0243] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for each device.

[0244] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and some or all of each functional block may be implemented using such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0245] Furthermore, devices included in the core network 30 (for example, network nodes that provide NF) may also be implemented using the functional block / hardware configuration described above.

[0246] (Variations) Terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, channel, symbol and signal (signal or signaling) may be used interchangeably. Also, a signal may be a message. A reference signal may be abbreviated as RS and may be called a pilot, pilot signal, etc., depending on the applicable standard. Also, a component carrier (CC) may be called a cell, frequency carrier, carrier frequency, etc.

[0247] A wireless frame may consist of one or more periods (frames) in the time domain. Each of these periods (frames) constituting a wireless frame may be called a subframe. Furthermore, a subframe may consist of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0248] Here, the neurology may be communication parameters applied to at least one of the transmission and reception of a signal or channel. The neurology may be, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering processes performed by the transceiver in the frequency domain, and specific windowing processes performed by the transceiver in the time domain.

[0249] A slot may consist of one or more symbols in the time domain (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols). Alternatively, a slot may be a time unit based on neurology.

[0250] A slot may include multiple minislots. Each minislot may consist of one or more symbols in the time domain. Minislots may also be called subslots. Minislots may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using minislots may be called a PDSCH (PUSCH) mapping type B.

[0251] Wireless frames, subframes, slots, minislots, and symbols all represent units of time when transmitting a signal. Wireless frames, subframes, slots, minislots, and symbols may each be referred to by different names. Furthermore, the units of time such as frames, subframes, slots, minislots, and symbols in this disclosure may be interpreted as interchangeable.

[0252] For example, one subframe may be called a TTI, multiple consecutive subframes may be called a TTI, and one slot or one mini-slot may be called a TTI. In other words, at least one of a subframe and a TTI may be a subframe in existing LTE (1 ms), a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. Note that the unit representing a TTI may be called a slot, mini-slot, etc., instead of a subframe.

[0253] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, the base station schedules each user terminal to allocate wireless resources (such as the frequency bandwidth and transmission power available to each user terminal) in TTI units. However, the definition of TTI is not limited to this.

[0254] TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, code words, etc., or it may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the actual time interval (e.g., number of symbols) in which the transport block, code block, code word, etc. are mapped may be shorter than the TTI.

[0255] Furthermore, if one slot or one mini-slot is referred to as a TTI, then one or more TTIs (i.e., one or more slots or one or more mini-slots) may constitute the minimum time unit for scheduling. In addition, the number of slots (number of mini-slots) that constitute this minimum time unit for scheduling may be controlled.

[0256] A TTI with a time length of 1 ms may be called a normal TTI, long TTI, normal subframe, long subframe, slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, mini slot, sub slot, slot, etc.

[0257] Furthermore, long TTIs (e.g., normal TTIs, subframes, etc.) may be interpreted as TTIs with a time length exceeding 1 ms, and short TTIs (e.g., shortened TTIs, etc.) may be interpreted as TTIs with a TTI length less than that of a long TTI but 1 ms or more.

[0258] A Resource Block (RB) is a resource allocation unit in the time domain and frequency domain, and in the frequency domain, it may contain one or more consecutive subcarriers. The number of subcarriers in an RB may be the same regardless of the neurology, for example, 12. The number of subcarriers in an RB may be determined based on the neurology.

[0259] Furthermore, an RB may contain one or more symbols in the time domain and may have the length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc., may each consist of one or more resource blocks.

[0260] One or more RBs may also be called Physical RBs (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

[0261] Furthermore, a resource block may consist of one or more resource elements (REs). For example, one RE may be a radio resource area comprising one subcarrier and one symbol.

[0262] A Bandwidth Part (BWP), also known as a partial bandwidth, may represent a subset of consecutive common resource blocks (RBs) for a given neurology in a given carrier. These common RBs may be identified by an index of the RBs relative to a common reference point of the carrier. The PRBs may be defined and numbered within a given BWP.

[0263] A BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL). One or more BWPs may be configured within a single carrier for a UE.

[0264] At least one of the configured BWPs may be active, and the UE does not need to assume that it will transmit or receive a predetermined signal / channel outside of the active BWP. In this disclosure, terms such as "cell" and "carrier" may be read as "BWP".

[0265] The structures of wireless frames, subframes, slots, minislots, and symbols described above are merely examples. For example, the number of subframes included in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, and the number of symbols, symbol length, and cyclic prefix (CP) length within the TTI can be varied in various ways.

[0266] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a predetermined value, or corresponding other information. For example, wireless resources may be indicated by a predetermined index.

[0267] The names used for parameters and other elements in this disclosure are not restrictive in any way. Furthermore, mathematical formulas and other elements using these parameters may differ from those expressly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

[0268] The information, signals, etc. described in this disclosure may be represented using any of the various different techniques. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0269] Furthermore, information, signals, etc., can be output from upper layers to lower layers and from lower layers to upper layers, or to at least one of the two. Information, signals, etc., may also be input and output via multiple network nodes.

[0270] Input and output information and signals may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information and signals may be overwritten, updated, or appended to. Output information and signals may be deleted. Input information and signals may be transmitted to other devices.

[0271] Any information described in this disclosure (e.g., variables, constants, parameters) may be communicated from any first device (e.g., UE / base station) to any second device (e.g., base station / UE) that indicates / specifies (or relates to) the value of such any information, even if not specifically stated in the embodiments described above.

[0272] Information notification is not limited to the embodiments described herein and may be carried out by other means. For example, information notification in this disclosure may be carried out by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0273] Physical layer signaling may also be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signals), L1 control information (L1 control signals), etc. RRC signaling may also be called RRC messages, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc. MAC signaling may also be communicated using, for example, MAC Control Elements (CEs).

[0274] Furthermore, notification of the specified information (for example, notification that "X is the case") is not limited to explicit notification, but may also be made implicitly (for example, by not notifying the specified information or by notifying other information).

[0275] The determination may be made by a value represented by one bit (0 or 1), by a boolean value represented as true or false, or by a numerical comparison (for example, a comparison with a predetermined value).

[0276] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0277] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0278] The terms “system” and “network” as used in this disclosure may be used interchangeably. “Network” may also mean the equipment included in the network (e.g., base stations).

[0279] In this disclosure, terms such as “precoding,” “precoder,” “weight (precoding weight),” “quasi-co-location (QCL),” “transmission configuration indication state (TCI state),” “spatial relation,” “spatial domain filter,” “transmit power,” “phase rotation,” “antenna port,” “layer,” “number of layers,” “rank,” “resource,” “resource set,” “beam,” “beam width,” “beam angle,” “antenna,” “antenna element,” “panel,” “UE panel,” “transmitting entity,” and “receiving entity” may be used interchangeably.

[0280] In this disclosure, "antenna port" may be interpreted interchangeably with "antenna port for any signal / channel" (e.g., a Demodulation Reference Signal (DMRS) port). In this disclosure, "resource" may be interpreted interchangeably with "resource for any signal / channel" (e.g., a reference signal resource, an SRS resource, etc.). Resources may include time / frequency / code / spatial / power resources. Furthermore, a spatial domain transmit filter may include at least one of a spatial domain transmit filter and a spatial domain receive filter.

[0281] The above group may include, for example, at least one of the following: a spatial relationship group, a code division multiplexing (CDM) group, a reference signal (RS) group, a control resource set (CORESET) group, a PUCCH group, an antenna port group (e.g., a DMRS port group), a layer group, a resource group, a beam group, an antenna group, or a panel group.

[0282] Furthermore, in this disclosure, terms such as beam, SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, Codeword (CW), Transport Block (TB), and RS may be interpreted interchangeably.

[0283] Furthermore, in this disclosure, TCI state, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, joint TCI state, etc., may be interpreted interchangeably.

[0284] Furthermore, in this disclosure, terms such as "QCL," "QCL assumption," "QCL relationship," "QCL type information," "QCL property / properties," "specific QCL type (e.g., Type A, Type D) properties," and "specific QCL type (e.g., Type A, Type D)" may be interpreted interchangeably.

[0285] In this disclosure, terms such as index, identifier (ID), indicator, indication, and resource ID may be interpreted interchangeably. In this disclosure, terms such as sequence, list, set, group, cluster, subset may be interpreted interchangeably.

[0286] Furthermore, the spatial relationship information Identifier (ID) (TCI state ID) and spatial relationship information (TCI state) may be interpreted as mutually exclusive. "Spatial relationship information (TCI state)" may be interpreted as mutually exclusive as "a set of spatial relationship information (TCI state)," "one or more pieces of spatial relationship information," etc. TCI state and TCI may be interpreted as mutually exclusive. Spatial relationship information and spatial relationship may be interpreted as mutually exclusive.

[0287] In this disclosure, terms such as “Base Station (BS),” “wireless base station,” “fixed station,” “NodeB,” “eNB (eNodeB),” “gNB (gNodeB),” “access point,” “Transmission Point (TP),” “Reception Point (RP),” “Transmission / Reception Point (TRP),” “panel,” “cell,” “sector,” “cell group,” “carrier,” and “component carrier” may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0288] A base station may house one or more (e.g., three) cells. If a base station houses multiple cells, the entire coverage area of ​​the base station may be divided into several smaller areas, each of which may also be provided with communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The terms “cell” or “sector” refer to part or all of the coverage area of ​​at least one of the base station and / or base station subsystems that provide communication services in that coverage.

[0289] In this disclosure, the transmission of information by a base station to a terminal may be interpreted as the base station instructing the terminal to perform a control / operation based on said information.

[0290] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0291] A mobile station may also be called a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other appropriate term.

[0292] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. At least one of the base station and the mobile station may also be a device mounted on a moving object, the moving object itself, etc.

[0293] The term "mobile object" refers to any movable object, regardless of its speed, and naturally includes cases where the mobile object is stationary. Examples of such mobile objects include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcarts, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and items carried on them. Furthermore, such mobile objects may be autonomously driven objects operating based on operational commands.

[0294] The mobile entity may be a vehicle (e.g., a car, an airplane), an unmanned mobile entity (e.g., a drone, an autonomous vehicle), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0295] Figure 13 shows an example of a vehicle according to one embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed sensor 51, a pneumatic pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0296] The drive unit 41 consists of, for example, at least one of an engine, a motor, or an engine-motor hybrid. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.

[0297] The electronic control unit 49 consists of a microprocessor 61, memory (ROM, RAM) 62, and communication ports (e.g., input / output (IO) ports) 63. Signals from various sensors 50-58 installed in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0298] Signals from various sensors 50-58 include current signals from current sensor 50 for sensing motor current, rotational speed signals of front wheels 46 / rear wheels 47 acquired by rotational speed sensor 51, air pressure signals of front wheels 46 / rear wheels 47 acquired by air pressure sensor 52, vehicle speed signals acquired by vehicle speed sensor 53, acceleration signals acquired by acceleration sensor 54, accelerator pedal depression amount signals acquired by accelerator pedal sensor 55, brake pedal depression amount signals acquired by brake pedal sensor 56, operation signals of shift lever 45 acquired by shift lever sensor 57, and detection signals acquired by object detection sensor 58 for detecting obstacles, vehicles, pedestrians, etc.

[0299] The information service unit 59 consists of various devices for providing (outputting) various types of information such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, display, television, and radio, and one or more ECUs that control these devices. The information service unit 59 uses information acquired from external devices via a communication module 60 or the like to provide various types of information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40.

[0300] The information service unit 59 may include input devices that accept input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) or output devices that perform output to the outside (e.g., display, speaker, LED lamp, touch panel, etc.).

[0301] The driver assistance system unit 64 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Unit (IMU), Inertial Navigation System (INS)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driver assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driver assistance functions or autonomous driving functions.

[0302] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 sends and receives data (information) via the communication port 63 to the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axle 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50-58 provided in the vehicle 40.

[0303] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with external devices. For example, it can send and receive various types of information to and from external devices via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the base station 10 or the user terminal 20 described above. Alternatively, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 (it may function as at least one of the base station 10 and the user terminal 20).

[0304] The communication module 60 may transmit at least one of the following to an external device via wireless communication: signals from the various sensors 50-58 input to the electronic control unit 49, information obtained based on said signals, and information based on input from an external source (user) obtained via the information service unit 59. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc., may also be called input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include the information based on the above input.

[0305] The communication module 60 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device and displays it on the information service unit 59 installed in the vehicle. The information service unit 59 may also be called an output unit, which outputs information (for example, it outputs information to devices such as displays and speakers based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 60).

[0306] Furthermore, the communication module 60 stores various information received from external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axle 48, various sensors 50-58, etc., which are provided in the vehicle 40.

[0307] Furthermore, the term "base station" in this disclosure may be interpreted as "user terminal." For example, the various aspects / embodiments of this disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may have the functions of the base station 10 described above. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, uplink channel, downlink channel, etc., may be interpreted as sidelink channel.

[0308] Similarly, the term "user terminal" in this disclosure may be replaced with "base station." In this case, the base station 10 may be configured to have the same functions as the user terminal 20 described above.

[0309] In this disclosure, operations performed by a base station may, in some cases, be performed by its upper node. In a network including one or more network nodes having base stations, it is clear that various operations performed for communication with terminals may be performed by the base station, one or more network nodes other than the base station (for example, a Mobility Management Entity (MME), a Serving Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0310] Each aspect / embodiment described in this disclosure may be used individually, in combination, or switched between as needed during execution. Furthermore, the processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described in this disclosure may be rearranged in order, provided they are consistent. For example, the methods described in this disclosure present various step elements using exemplary order and are not limited to the specific order presented.

[0311] Each aspect / embodiment described in this disclosure is Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (where x is, for example, an integer or decimal)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM®), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), IEEE 802.20, systems utilizing Ultra-WideBand (UWB), Bluetooth®, or other appropriate wireless communication methods, and next-generation systems extended, modified, created, or defined based thereon may also be applied. Furthermore, multiple systems may be applied in combination (for example, a combination of LTE or LTE-A and 5G).

[0312] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0313] Any reference to elements using the designations “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, the references to the first and second elements do not imply that only two elements may be employed or that the first element must precede the second element in any way.

[0314] The term “determining” as used in this disclosure may encompass a wide variety of actions. For example, “determining” may be considered to mean judging, calculating, computing, processing, deriving, investigating, looking up, searching, or inquiring (e.g., searching in tables, databases, or other data structures), ascertaining, etc.

[0315] Furthermore, "judgment (decision)" may be considered as "judging (deciding)" things like receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory).

[0316] Furthermore, “judgment (decision)” may be considered as “judgment (decision)” of resolving, selecting, choosing, establishing, comparing, etc. In other words, “judgment (decision)” may be considered as “judgment (decision)” of some action. In this disclosure, “judgment (decision)” may be interpreted as mutually interchangeable with the actions described above.

[0317] Furthermore, in this disclosure, “determine / determining” may be interpreted as “assume / assuming,” “expect / expecting,” or “consider / considering.” In addition, in this disclosure, “not expecting to do…” may be interpreted as “expecting not to do….”

[0318] In this disclosure, "expect" may be rephrased as "be expected." For example, "expect(s) ..." (where "..." may be expressed as a that clause, an infinitive, etc.) may be rephrased as "be expected ..." or "do (the verb without "to" if "..." is an infinitive)." Similarly, "does not expect ..." may be rephrased as "be not expected ..." or "do not (the verb without "to" if "..." is an infinitive)." Furthermore, "An apparatus A is not expected ..." may be rephrased as "An apparatus B other than apparatus A does not expect ... from apparatus A" (for example, if apparatus A is a UE, apparatus B may be a base station).

[0319] The term "maximum transmit power" as used in this disclosure may mean the maximum transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0320] As used in this disclosure, the terms “connected,” “coupled,” and any variations thereof mean any direct or indirect connection or coupling between two or more elements, and may include one or more intermediate elements between two elements that are “connected” or “coupled” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be replaced with “access.”

[0321] In this disclosure, when two elements are connected, they can be considered to be "connected" or "coupled" to each other using one or more wires, cables, printed electrical connections, etc., and, in some non-exclusive and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible) domain.

[0322] In this disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "combine" may be interpreted similarly to "different."

[0323] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0324] In this disclosure, if articles are added by translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0325] In this disclosure, "less than or equal to," "less than," "greater than or equal to," "more than," and "equal to" may be interpreted interchangeably. In addition, in this disclosure, words meaning "good," "bad," "big," "small," "high," "low," "early," "slow," "wide," and "narrow" may be interpreted interchangeably, not limited to the positive, comparative, and superlative degrees. In addition, in this disclosure, words meaning "good," "bad," "big," "small," "high," "low," "early," "slow," "wide," and "narrow" may be interpreted interchangeably, not limited to the positive, comparative, and superlative degrees, by adding "i-th" (where i is any integer) to the expression (for example, "highest" may be interpreted interchangeably with "i-th highest").

[0326] In this disclosure, "of," "for," "regarding," "related to," and "associated with" may be interpreted as being interchangeable.

[0327] In this disclosure, phrases such as "when A, B", "if A, then B", "B upon A", "B in response to A", "B based on A", "B during / while A", "B before A", "B at (the same time as) / on A", "B after A", "B since A", and "B until A" may be interchangeable. Furthermore, A, B, etc., may be replaced with appropriate expressions such as nouns, gerunds, or regular sentences depending on the context. The time difference between A and B may be approximately zero (immediately after or immediately before). Additionally, a time offset may be applied to the time when A occurs. For example, "A" may be interpreted as "before / after the time offset when A occurs". The time offset (e.g., one or more symbols / slots) may be predetermined or determined by the UE based on notified information.

[0328] In this disclosure, timing, time, duration, time instance, any unit of time (e.g., slot, subslot, symbol, subframe), period, occasion, resource, etc., may be interpreted interchangeably.

[0329] Although the invention described herein has been explained in detail above, it will be clear to those skilled in the art that the invention described herein is not limited to the embodiments described herein. The descriptions herein are illustrative and not intended to be restrictive in any way to the invention described herein.

[0330] This application is based on Japanese Patent Application No. 2025-018301, filed on February 6, 2025. All of its contents are included herein.

Claims

1. A terminal having a receiving unit that receives information for receiving or transmitting a signal for a network or cell target to acquire channel status information (CSI), and a control unit that controls the receiving or transmitting based on the information in a state before connecting to the target.

2. The terminal according to claim 1, which controls receiving based on at least one of a downlink message in a random access procedure, a message for radio resource control (RRC) reset, and an event, and reporting based on said receiving.

3. The terminal according to claim 1, wherein the signal is one of a downlink demodulation reference signal (DMRS), a synchronization signal block, a sounding reference signal (SRS), or a channel status information (CSI)-reference signal (RS).

4. The terminal according to claim 1, wherein the target is a target cell in mobility.

5. A wireless communication method for a terminal, comprising the steps of: receiving information for receiving or transmitting a signal for a network or cell target to acquire channel status information (CSI); and controlling the receiving or transmitting based on the information in a state prior to connecting to the target.

6. A base station having a transmitting unit that transmits information for receiving or transmitting a signal for a network or cell target to acquire channel status information (CSI), and a control unit that controls the receiving or transmitting based on the information in a state prior to connecting to the target.

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