Terminal, wireless communication method, base station and system

Abstract

Appropriately control scheduling restrictions on data transmission and reception during L1 measurements. [Solution] A terminal according to one embodiment of the present disclosure has a measurement unit that performs L1 measurement using a reference signal in a certain frequency band, and a control unit that controls scheduling restrictions in transmission and reception on the frequency band during the L1 measurement based on the sub-carrier spacing (SCS) of the reference signal, and if the SCS of a signal is not the same as the SCS of a reference signal (SSB), the control unit does not transmit or receive the signal in the symbol of the reference signal for the L1 measurement, and the control unit does not transmit or receive the signal in the symbol of the reference signal for RRM (Radio Resource Management) measurement and one symbol before and after the symbol.

Description

[Technical field]

[0001] The present disclosure relates to a terminal, a wireless communication method and a system in a next-generation mobile communication system. [Background technology]

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) has been specified for the purpose of achieving higher data rates and lower latency (Non-Patent Document 1). In addition, LTE-A (LTE Advanced, LTE Rel. 10, 11, 12, 13) has been specified for the purpose of achieving higher capacity and greater sophistication of LTE (LTE Rel. 8, 9).

[0003] Successor systems to LTE (e.g., FRA (Future Radio Access), 5G (5th generation mobile communication system), 5G+ (plus), NR (New Radio), NX (New radio access), FX (Future generation radio access), LTE Rel. 14 or 15 or later, etc.) are also being considered.

[0004] In existing LTE systems (e.g., LTE Rel. 8-13), a user equipment (UE: User Equipment) detects a synchronization signal (SS: Synchronization Signal) to synchronize with a network (e.g., a base station (eNB: eNode B)) and identify a cell to connect to (e.g., by a cell ID (Identifier)). Such a process is also called cell search. The synchronization signal includes, for example, a PSS (Primary Synchronization Signal) and / or an SSS (Secondary Synchronization Signal).

[0005] The UE also receives broadcast information (e.g., a Master Information Block (MIB), a System Information Block (SIB), etc.) to obtain configuration information (which may also be referred to as system information, etc.) for communication with the network.

[0006] The MIB may be transmitted on a physical broadcast channel (PBCH), and the SIB may be transmitted on a physical downlink shared channel (PDSCH). [Prior art documents] [Non-patent literature]

[0007] [Non-Patent Document 1] 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 Summary of the Invention [Problem to be solved by the invention]

[0008] In the future wireless communication system (hereinafter, simply referred to as NR), measurements using synchronization signal blocks (SSBs) are used. The timing configuration for measurements using SSBs (SMTC: SSB-based Measurement Timing Configuration) is notified to the UE. The UE performs measurements based on the SSBs to be measured (which may be called SSB measurements) within the configured SMTC window.

[0009] In NR, data transmission and reception operations at the same timing as SSB measurements are being considered. For example, it is being considered that in a specific frequency band, during the period when SSB measurements of a certain numerology are being performed, there may be no scheduling restrictions on data of the same SCS.

[0010] However, data transmission and reception operations when measurements other than SSB measurements (such as measurements based on Channel State Information-Reference Signals (CSI-RS)) are being performed have not been considered. If data transmission and reception operations when measurements other than SSB measurements are being performed are not properly specified, there is an issue that communication throughput will decrease.

[0011] Therefore, an object of the present disclosure is to provide a terminal, a wireless communication method, and a system that can appropriately control data transmission and reception simultaneously with measurements other than SSB measurements, even when the measurements are performed. [Means for solving the problem]

[0012] A terminal according to one embodiment of the present disclosure includes: A transceiver unit and a measurement unit connected to the transceiver unit, A measurement unit that performs L1 measurement using a reference signal in a certain frequency band; and when the frequency band is included in a first frequency band, the reference signal for the L1 measurement is a synchronization signal block (SSB), and the terminal does not have the capability of simultaneously transmitting and receiving data of different numerologies and SSB, the transceiver unit Reference signal for L1 measurement On the symbol , of the reference signal for the L1 measurement Sub-Carrier Spacing (SCS) Send and receive height figure, When the frequency band is included in a first frequency band and the terminal is in a synchronous environment of the first frequency band, the transceiver unit: Symbols and symbols of reference signals for RRM (Radio Resource Management) measurements Biyatsu One symbol before and after the symbol On , Data of an SCS different from the SCS of the reference signal for the RRM measurement Send and receive However, when the frequency band is included in a second frequency band higher than the first frequency band, and the reference signal for the L1 measurement is a reference signal that is quasi-collocated with a reference signal in an active Transmission Configuration Indicator state (TCI-state), the transceiver unit is capable of transmitting and receiving data on symbols of the reference signal for the L1 measurement. . Effect of the Invention

[0013] According to one aspect of the present disclosure, even when a measurement other than an SSB measurement is performed, data transmission and reception can be appropriately controlled simultaneously with the measurement. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram showing an example of scheduling restrictions when a synchronous environment is assumed. [Diagram 2] FIG. 2 is a diagram showing another example of scheduling restrictions when a synchronous environment can be assumed. [Diagram 3] FIG. 3 is a diagram illustrating an example of a scheduling restriction when a synchronous environment cannot be assumed. [Figure 4] FIG. 4 is a diagram showing another example of scheduling restrictions when a synchronous environment cannot be assumed. [Diagram 5] FIG. 5 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. [Figure 6] FIG. 6 is a diagram illustrating an example of an overall configuration of a radio base station according to an embodiment. [Figure 7] FIG. 7 is a diagram illustrating an example of a functional configuration of a radio base station according to an embodiment. [Figure 8] FIG. 8 is a diagram illustrating an example of the overall configuration of a user terminal according to an embodiment. [Figure 9] FIG. 9 is a diagram illustrating an example of a functional configuration of a user terminal according to an embodiment. [Figure 10] FIG. 10 is a diagram illustrating an example of a hardware configuration of a radio base station and a user terminal according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] (SSB measurement) In the existing LTE system, a UE supports inter-frequency measurement, which performs measurements on a non-serving carrier different from a serving carrier currently connected.

[0016] In a measurement gap (MG), the UE switches (retunes) its operating frequency (RF: Radio Frequency) from a serving carrier to a non-serving carrier, performs measurements using a reference signal, etc., and then switches the operating frequency from the non-serving carrier to the serving carrier.

[0017] Here, MG is a period for performing different frequency measurements, during which the UE stops transmission and reception on the carrier currently being used for communication and performs measurements on a carrier of a different frequency.

[0018] In LTE, while measuring different frequency carriers using MG, transmission and reception in the serving cell is not possible because the RF is switched. On the other hand, in other cases (e.g., same-frequency measurement), there are no restrictions on transmission and reception related to the measurement.

[0019] For NR, the following measurements are considered: (1) Intra-frequency measurement without MG, (2) Intra-frequency measurement with MG, (3) Inter-frequency measurement.

[0020] The intra-frequency measurement without MG (1) above is also called in-frequency measurement without RF retuning. The intra-frequency measurement with MG (2) above is also called in-frequency measurement that requires RF retuning. For example, if the signal to be measured is not included within the band of the active BWP (BandWidth Part), RF retuning is required even for in-frequency measurement, so it falls under the measurement type (2) above.

[0021] Here, the BWP corresponds to one or more partial frequency bands in a component carrier (CC) configured in NR. The BWP may be referred to as a partial frequency band, a partial band, or the like.

[0022] The inter-frequency measurement in (3) above is also called inter-frequency measurement. It is assumed that the inter-frequency measurement uses an MG. However, if the UE reports the UE capability of gap-less measurement to a base station (which may be called, for example, a BS (Base Station), a TRP (Transmission / Reception Point), an eNB (eNodeB), a gNB (NR NodeB), etc.), inter-frequency measurement without an MG is possible.

[0023] In a carrier, the UE may perform intra-frequency measurements of a serving cell, or may perform at least one of intra-frequency measurements and inter-frequency measurements of adjacent cells (which may also be called neighbor cells). In NR, while measuring the same-frequency carrier or different-frequency carrier using MG, transmission and reception in the serving cell is not possible because RF is switched.

[0024] In LTE, NR, etc., for in-frequency measurements and / or different frequency measurements, at least one of the reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), and signal to interference plus noise ratio (SINR) of a non-serving carrier may be measured.

[0025] Here, RSRP is the received power of a desired signal, and is measured using at least one of a cell-specific reference signal (CRS) and a channel state information-reference signal (CSI-RS). RSSI is the total received power including the received power of the desired signal and interference and noise power. RSRQ is the ratio of RSRP to RSSI.

[0026] The desired signal may be a signal included in a synchronization signal block (SSB). The SSB is a signal block including a synchronization signal (SS) and a broadcast channel (also called a broadcast signal, PBCH, NR-PBCH, etc.), and may be called an SS / PBCH block, etc.

[0027] The SS included in the SSB may include a primary synchronization signal (PSS), a secondary synchronization signal (SSS), etc. The SSB is composed of one or more symbols (e.g., OFDM symbols). Within the SSB, the PSS, SSS, and PBCH may each be arranged in one or more different symbols. For example, the SSB may be composed of a total of four or five symbols including one PSS symbol, one SSS symbol, and two or three PBCH symbols.

[0028] Note that measurements performed using SS (or SSB) may be called SS (or SSB) measurements. For example, SS-RSRP, SS-RSRQ, and SS-SINR measurements may be performed as SS (or SSB) measurements. Demodulation reference signals (DMRS) corresponding to PSS, SSS, and PBCH may be used in SS (or SSB) measurements.

[0029] The UE may perform communication (transmission / reception of signals, measurement, etc.) using at least one frequency band (carrier frequency) of a first frequency band (FR1: Frequency Range 1) and a second frequency band (FR2: Frequency Range 2).

[0030] For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band of above 24 GHz (above-24 GHz). FR1 may be defined as a frequency range in which at least one of 15, 30, and 60 kHz is used as a subcarrier spacing (SCS), and FR2 may be defined as a frequency range in which at least one of 60 and 120 kHz is used as an SCS. Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may be a higher frequency band than FR2.

[0031] FR2 may be used only in a time division duplex (TDD) band. FR2 is preferably operated synchronously among multiple base stations. When FR2 includes multiple carriers, these carriers are preferably operated synchronously.

[0032] The UE may be notified (configured) of information regarding same-frequency measurements and / or different-frequency measurements (e.g., the "MeasObjectNR" information element) from the base station, for example, using higher layer signaling, physical layer signaling, or a combination thereof.

[0033] Here, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, and the like, or a combination of these.

[0034] The MAC signaling may be, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (MAC PDU), etc. The broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), etc.

[0035] The information on same-frequency measurement and / or different-frequency measurement may include information applicable to same-frequency measurement, different-frequency measurement, etc. using SSB and / or CSI-RS. The information on same-frequency measurement and / or different-frequency measurement may include, for example, a frequency band (carrier) to be measured, presence or absence of synchronization of a carrier to be measured, a resource position (slot number, symbol number, RB index, etc.) of a signal to be measured (DMRS, CSI-RS, etc.), a timing configuration of SSB measurement (SMTC: SSB-based Measurement Timing Configuration), an index of an SSB to be measured, etc. The SSB index may be associated with a resource position of an SSB.

[0036] The presence or absence of synchronization of the carrier to be measured may be set in the UE by RRC signaling using information (which may be called the parameter "useServingCellTimingForSync") on whether the carrier to be measured is synchronized with the serving cell (whether the index of the SSB transmitted by a neighbor cell can be derived based on the timing of the serving cell). The information may be called information on SSB index derivation, information on carrier (or cell) synchronization, etc.

[0037] If useServingCellTimingForSync is included in information on same-frequency measurement and / or different-frequency measurement (e.g., "MeasObjectNR" information element), it may be assumed that useServingCellTimingForSync is enabled. If useServingCellTimingForSync is not included, it may be assumed that useServingCellTimingForSync is disabled.

[0038] In addition, when multiple carriers (or multiple cells) are synchronized, the UE may assume that the radio frame boundaries (or frame timing) between these carriers or cells are aligned, or that the System Frame Numbers (SFNs) are aligned, or may assume both.

[0039] The position of the SSB to be measured within the SMTC period may be signaled by a bitmap (which may be called the parameter "ssb-ToMeasure"). The bitmap may be associated with the frequency band to be measured. For example, the higher the frequency band to be measured, the longer the bitmap may be used to signal the SSB index.

[0040] The SMTC may include the length, period, timing offset, etc. of an SSB measurement period (which may also be referred to as an SMTC window, measurement timing, etc.) The UE performs measurements based on the SSB to be measured within the configured SMTC window.

[0041] UE capability signaling for configuring an MG for different frequency measurement may be supported. For example, the UE capability signaling can configure an MG for different frequency measurement for FR1 and FR2 separately.

[0042] For example, the UE may notify capability signaling including an MG length (length or duration), an MG repetition period, etc. for gaps corresponding to at least one of FR1 individual, FR2 individual, and UE individual.

[0043] (SSB measurement and data transmission / reception) In NR, in order to enable flexible control, it is also considered to transmit and receive data in symbols where SSB is set. When the numerology of SSB is different from the numerology of the data and / or control channel of the serving cell, whether or not the UE can simultaneously process these signals with different numerologies (including at least one of simultaneous transmission, simultaneous reception, simultaneous transmission and reception, etc.) may depend on the UE capabilities. For example, it may be assumed that a UE that does not have these simultaneous processing capabilities cannot transmit or receive data during SSB measurement.

[0044] Numerology corresponds to, for example, SCS. In the present disclosure, numerology and SCS may be interpreted as mutually interchangeable. In the present disclosure, the term "data" may be interpreted as at least one of data, a control channel, and a reference signal. For example, "data" may be interpreted as PUCCH / PUSCH or PDCCH / PDSCH. Data transmission / reception may mean at least one of PUCCH / PUSCH transmission and PDCCH / PDSCH reception in a serving cell.

[0045] In addition, the UE may support simultaneous transmission and reception of data and SSB of different numerologies, and the UE may report the capability to the base station by the UE capability information (simultaneousRxDataSSB-DiffNumerology). A UE having the capability may simultaneously receive SSB and / or receive and transmit data. The above capability may be read as capability related to intra-carrier simultaneous measurement (intraCarrierConcurrentMeas). The names such as simultaneousRxDataSSB-DiffNumerology are not limited to this.

[0046] In FR1, regardless of whether in a synchronous or asynchronous environment, when measuring an SSB of a certain SCS, it may be assumed that there is no scheduling restriction on data of the same SCS, i.e., if the SSB and data have the same SCS, the UE may transmit and receive the data during the measurement of the SSB.

[0047] In FR1, when measuring SSB of one SCS, data of a different SCS may be restricted. FR1 considers both synchronous and asynchronous cases since it can be both Frequency Division Duplex (FDD) and TDD bands. For example, a UE that cannot process SSB and data of different SCS simultaneously may follow at least one of the following scheduling restrictions for SSB measurement in FR1: (1) When the network (or the measurement target carrier) is synchronized (e.g., useServingCellTimingForSync is enabled), the UE is not expected to transmit or receive data with an SCS different from the SCS of the SSB in the SSB symbol to be measured in the SMTC window and in one symbol before and after each consecutive SSB symbol (or is unable to transmit or receive data). (2) If the network (or the carrier to be measured) is not synchronized (e.g., useServingCellTimingForSync is disabled), the UE does not expect to transmit or receive data of an SCS different from the SCS of the SSB in all symbols within the SMTC window (or is unable to transmit or receive data).

[0048] Note that "not assuming transmission or reception" may be interpreted as "transmission or reception is not permitted", "transmission or reception is not performed", "transmission or reception is restricted", "assuming that transmission or reception is not possible", etc. Also, the fact that the NW or the carrier to be measured is (is not) synchronized and the fact that the UE can (cannot) assume a synchronous environment may be interpreted as interchangeable. Also, a symbol may be called a data symbol if it can be used for data transmission or reception.

[0049] The above (1) is due to the assumption that the SSB symbol and one symbol before and after it are time resources that may be affected by SSB measurements in a synchronous environment, taking into account that the SSB of a neighboring cell arrives at the UE with a propagation delay difference. Also, the above (2) is due to the assumption that all symbols in the SMTC window are time resources that may be affected by SSB measurements, since it is not possible to predict at which symbol in the SMTC window the SSB will be received in an asynchronous environment.

[0050] In addition, when intra-band CA is performed in FR1, the scheduling restriction may be applied to all serving cells of the band, regardless of the synchronous / asynchronous environment, SCS, etc. For example, when two CCs are subjected to intra-band CA in FR1, when SSB measurement is performed on one CC, it may be assumed that data transmission / reception of the other CC is affected by the scheduling restriction. When inter-band CA is performed in FR1, it may be assumed that there is no scheduling restriction, regardless of the synchronous / asynchronous environment, SCS, etc.

[0051] It should be noted that CA may be interpreted as other terms, such as dual connectivity (DC).

[0052] Since FR2 is a TDD band, it is sufficient to consider the case of a synchronous environment. In FR2, it is assumed that the UE performs reception BF using analog BF (Beam Forming) when performing SSB measurement. In this case, when the UE directs a beam toward a neighboring cell to measure the SSB of the neighboring cell, it may be assumed that the UE cannot receive data from the serving cell at the same time. Therefore, it may be assumed that the UE cannot transmit or receive data during SSB measurement in FR2, regardless of the UE capability and SCS.

[0053] For example, in the case of performing FR2 SSB measurements, the following scheduling restriction may be observed: The UE is not expected to transmit or receive data (or is not able to transmit or receive data) in the SSB symbol to be measured and in one symbol before or after each successive SSB symbol within the SMTC window. Note that when measuring SS-RSRQ, this "SSB symbol" may be interpreted as "SSB symbol and RSSI measurement symbol".

[0054] In addition, when intra-band CA is performed in FR2, the scheduling restriction may be applied to all serving cells in the band. When inter-band CA is performed in FR2, the scheduling restriction may be applied to all serving cells between the bands (both bands).

[0055] Also, when inter-band CA is performed in FR1 and FR2, it may be assumed that there are no scheduling restrictions.

[0056] Data transmission / reception operations in a serving cell during CA may be determined taking into consideration measurement timing information (e.g., SMTC, SSB index, etc.) in other serving cells. Also, during intra-band CA, information regarding the availability of co-frequency measurement in a SCell (secondary cell) frequency may be notified to the UE. The UE may control the execution of co-frequency measurement in the SCell frequency based on the information.

[0057] Meanwhile, a UE may perform same-frequency measurement and / or different-frequency measurement based on a Channel State Information Reference Signal (CSI-RS).

[0058] The UE may also perform measurements for Radio Link Monitoring (RLM), which may be referred to as RLM measurements. When a Radio Link Failure (RLF) is detected by RLM, re-establishment of the RRC connection may be performed. The reference signal for RLM (RLM-RS) may be at least one of SSB, CSI-RS, PSS, SSS, DMRS, Mobility Reference Signal (MRS), beam-specific signal, etc., or a signal configured by extending or modifying these.

[0059] The UE may also perform measurements for L1-RSRP (Reference Signal Received Power (RSRP) in the physical layer). The reference signal for L1-RSRP may be at least one of SSB, CSI-RS, PSS, SSS, DMRS, MRS, and a beam-specific signal, or a signal configured by extending or modifying any of these.

[0060] In addition, the UE may perform measurements for beam failure detection. The reference signal for beam failure detection may be at least one of SSB, CSI-RS, PSS, SSS, DMRS, MRS, and beam-specific signals, or may be a signal configured by extending or modifying these signals.

[0061] Since the L1-RSRP measurement and the measurement for beam fault detection are physical layer measurements, they may be called L1 measurements (Layer 1 measurements). The reference signal for L1-RSRP and the reference signal for beam fault detection may be called a reference signal for L1 measurement (L1-RS).

[0062] What has been considered in NR so far is data transmission and reception operation when SSB-based same-frequency measurement and / or different-frequency measurement (SSB measurement) is performed as described above. However, data transmission and reception operation when CSI-RS-based same-frequency measurement and / or different-frequency measurement (CSI-RS measurement), RLM measurement, and L1 measurement are performed has not been considered.

[0063] For example, if the SCS of RLM-RS (or L1-RS) and data are different, it has not been considered whether they can be transmitted and received simultaneously. Also, in FR2, it has not been considered whether the analog BF for data reception is the same as the analog BF for RLM (or L1-RSRP).

[0064] If data transmission and reception operations are not properly specified when CSI-RS measurements, RLM measurements, and L1 measurements are being performed, there is a problem that communication throughput will decrease.

[0065] Therefore, the present inventors have come up with the idea of ​​UE operation when CSI-RS measurements, RLM measurements, and L1 measurements are being performed.

[0066] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0067] In the following embodiments, "one symbol before or after" may be interpreted as "a predetermined number of symbols at least one of before and after (in time)" and "a first number of symbols before and a second number of symbols after (in time)." The predetermined number, the first number, and the second number may be, for example, 1, 2, 3 symbols, etc. Also, the first number and the second number do not have to be the same.

[0068] (Wireless communication method) <First embodiment> The first embodiment relates to data transmission and reception during CSI-RS measurement.

[0069] In FR1, regardless of whether in a synchronous or asynchronous environment, when measuring a CSI-RS of a certain SCS, it may be assumed that there is no scheduling restriction on data of the same SCS, i.e., if the SCS of the CSI-RS and data is the same, the UE may transmit or receive the data during the measurement of the CSI-RS.

[0070] The UE may support simultaneous transmission and reception of data and CSI-RS of different numerologies, and the UE may report the capability to the base station through UE capability information. If the UE supports simultaneous transmission and reception capability of data and SSB of different numerologies (e.g., simultaneousRxDataSSB-DiffNumerology), the UE may be assumed to support simultaneous transmission and reception of data and CSI-RS of different numerologies.

[0071] The UE may support simultaneous transmission and reception capability of data of different numerologies and CSI-RS as a capability separate from the simultaneous transmission and reception capability of data of different numerologies and SSB (e.g., simultaneousRxDataSSB-DiffNumerology). In other words, UE capability information indicating simultaneous transmission and reception capability of data of different numerologies and CSI-RS may be specified separately from UE capability information indicating simultaneous transmission and reception capability of data of different numerologies and SSB.

[0072] A UE capable of simultaneously transmitting and receiving CSI-RS and data of different SCS may assume that there is no scheduling restriction on the data, i.e., the UE may transmit and receive data during CSI-RS measurement even if the SCS of the CSI-RS and data are different.

[0073] A UE that does not have the capability of simultaneously transmitting and receiving CSI-RS and data of different SCSs may follow the following scheduling restrictions: It is not expected (or possible) that the CSI-RS and SCS will transmit or receive data that is different during CSI-RS measurement. Note that operation in synchronous and asynchronous environments will be described later.

[0074] Note that the capability of simultaneous transmission and reception of data and CSI-RS of different numerologies may not be specified. In this case, it may be assumed that (all) UEs can simultaneously transmit and receive CSI-RS and data of different SCSs, or may not. Such assumptions may be specified in the specification.

[0075] In FR2, in the case of CSI-RS measurement, it is assumed that the receiving beam is directed to a neighboring cell, as in the case of SSB measurement. Therefore, in the case of performing CSI-RS measurement in FR2, the UE is not assumed to transmit or receive data in the CSI-RS symbol to be measured or in one symbol before or after the CSI-RS symbol (or is not capable of transmitting or receiving data).

[0076] In addition, when intra-band CA is performed in FR2, the scheduling restriction may be applied to all serving cells of the band. When inter-band CA is performed in FR2, the scheduling restriction may be applied to all serving cells between the bands (both bands). In other words, when intra-band CA or inter-band CA is performed in FR2, it is not necessary to assume data transmission / reception in the CSI-RS symbol in all serving cells and one symbol before and after the CSI-RS symbol.

[0077] <Synchronization environment> If a synchronous environment can be assumed in FR1, the UE does not need to assume that the CSI-RS and the SCS transmit and receive different data in the CSI-RS symbol and one symbol before and after the CSI-RS symbol.

[0078] When intra-band CA is performed in FR1 and a synchronous environment can be assumed in the FR1, the UE may assume that the scheduling restriction applies to all serving cells in the band.

[0079] When inter-band CA is performed in FR1 and a synchronous environment can be assumed in the FR1, the UE may assume that there are no scheduling restrictions or that the scheduling restrictions apply to all serving cells in the band.

[0080] The UE may assume that the environment is synchronous except when associated SSBs are configured for all CSI-RSs to be measured. In other words, if there is at least one CSI-RS for which associated SSBs are not configured among the configured CSI-RSs, the UE may assume that the environment is synchronous. If associated SSBs are configured for all configured CSI-RSs, the UE may assume that the environment is asynchronous.

[0081] A UE may be configured with one associated SSB per CSI-RS resource, which may or may not be in a Quasi-Co-Location (QCL) relationship with the CSI-RS resource.

[0082] The UE may determine whether or not a synchronous environment can be assumed for CSI-RS measurement based on information other than the above-mentioned related SSB (e.g., useServingCellTimingForSync, other information elements, parameters, etc.). For example, the UE may assume that the environment is synchronous when useServingCellTimingForSync is enabled. Also, for example, the UE may assume that the environment is synchronous when the measurement target frequency is within the TDD band.

[0083] Fig. 1 is a diagram showing an example of a scheduling restriction when a synchronous environment can be assumed. Fig. 2 is a diagram showing another example of a scheduling restriction when a synchronous environment can be assumed. Fig. 1 corresponds to a case where a UE is not configured with CA (one serving cell is configured), and Fig. 2 corresponds to a case where a UE is configured with CA (two serving cells are configured).

[0084] In Fig. 1, CSI-RS to be measured are transmitted on carriers to be measured (serving cell, neighbor cell 1, and neighbor cell 2). The serving cell and neighbor cell 2 have CSI-RS resources in slot #0 and slot #3. Neighbor cell 1 has CSI-RS resources in slots #0-#3. The UE is configured to make measurements using these CSI-RS. These cells are synchronized.

[0085] When a synchronous environment can be assumed as shown in Fig. 1, the UE does not need to assume that the CSI-RS and SCS transmit and receive different data in the configured CSI-RS symbol and one symbol before and after the CSI-RS symbol. The "resources for which data transmission and reception is not possible" shown in the figure correspond to resources for which the UE assumes that there is a data scheduling restriction. Note that the UE may assume that there is no scheduling restriction for other resources.

[0086] In Fig. 2, the CSI-RS to be measured is transmitted in carrier B. The configuration of the CSI-RS of the serving cell of carrier B, neighbor cell 1, and neighbor cell 2 is the same as in Fig. 1. Carrier A and carrier B are synchronized.

[0087] When a synchronous environment can be assumed as shown in Figure 2, it is not necessary to assume that the CSI-RS and SCS transmit and receive different data in the CSI-RS symbol measured on a certain carrier (carrier B) and in one symbol before and after the CSI-RS symbol, not only on the same carrier (carrier B) but also on another carrier (carrier A).

[0088] 1 and 2 show an example in which the symbol positions of the CSI-RS resources in each cell are the same (aligned), but this is not limited to this. The slot configuration, the number of CSI-RS, etc. are not limited to this example. The UE does not need to assume that the CSI-RS and the SCS transmit and receive different data in the CSI-RS symbol and one symbol before and after the CSI-RS symbol in at least one cell in which CSI-RS measurement is configured.

[0089] <Asynchronous environment> When the UE cannot assume a synchronous environment in FR1, the UE may measure a CSI-RS of an SCS different from that of the serving cell in a measurement gap (MG). In addition, the UE may not assume (cannot transmit or receive) data in the serving cell in the MG.

[0090] In this case, the UE may perform measurements using CSI-RS resources included in the MG period, and may not need to measure on CSI-RS resources outside the MG period. Outside the MG period, the UE may transmit and receive data of an SCS different from the SCS of the CSI-RS measured within the MG period.

[0091] When the UE cannot assume a synchronous environment in FR1, the UE may measure the CSI-RS within a set predetermined period, and may not assume that the CSI-RS and the SCS transmit and receive different data within the predetermined period. The predetermined period may be set in the UE by, for example, higher layer signaling. Note that the UE may not assume that the CSI-RS and the SCS transmit and receive the same data within the predetermined period.

[0092] Here, the predetermined period may be an SMTC window. That is, even if the UE is not configured for SSB measurement but is configured for CSI-RS measurement, the SMTC window may be configured. In this case, the UE may perform CSI-RS measurement using the CSI-RS included in the SMTC window. The UE may not measure CSI-RS resources outside the SMTC window.

[0093] The predetermined period may be a window for CSI-RS measurement. The window may be a window that is defined separately from the SMTC window. When the window for CSI-RS measurement is configured, for example, by using higher layer signaling, the UE may perform CSI-RS measurement using the CSI-RS included in the window. The UE may not need to measure CSI-RS resources outside the window.

[0094] The above-mentioned predetermined period may be configured in the UE whenever a CSI-RS in which an associated SSB is configured is configured in the UE.

[0095] Fig. 3 is a diagram showing an example of a scheduling restriction when a synchronous environment cannot be assumed. Fig. 4 is a diagram showing another example of a scheduling restriction when a synchronous environment cannot be assumed. Fig. 3 corresponds to a case where a UE is not configured with CA (one serving cell is configured), and Fig. 4 corresponds to a case where a UE is configured with CA (two serving cells are configured).

[0096] In Fig. 3, CSI-RS to be measured are transmitted in carriers to be measured (serving cell, neighbor cell 1, and neighbor cell 2). UE is configured to measure using these CSI-RS. These cells are asynchronous.

[0097] Figures 3 and 4 correspond to the above-mentioned case where the CSI-RS is measured within the set SMTC window, and it is not assumed that the CSI-RS and the SCS transmit and receive different data in the SMTC window. Figures 3 and 4 also show the resources of the SSB associated with each CSI-RS. Note that the CSI-RS and the SSB associated with the CSI-RS may be included in the same slot, or may be included in different slots.

[0098] When a synchronized state cannot be assumed as in Figure 3, the UE does not need to assume that it will transmit or receive data within the window period, since any symbol within that window period may be used for CSI-RS measurement.

[0099] In Fig. 4, the CSI-RS to be measured is transmitted in carrier B. The configuration of the CSI-RS of the serving cell of carrier B, neighboring cell 1, and neighboring cell 2 is the same as in Fig. 1. In this example, the frame timing of the serving cell of carrier A and the serving cell of carrier B are aligned, but they do not have to be aligned.

[0100] When a synchronous environment cannot be assumed as in Figure 4, any symbol may be used for CSI-RS measurement within the above window period set in a certain carrier (carrier B), so the UE does not need to assume that it will transmit or receive data within the window period.

[0101] According to the first embodiment described above, the UE can appropriately assume scheduling restrictions on data transmission and reception when measuring the CSI-RS.

[0102] <Second embodiment> The second embodiment relates to data transmission and reception during RLM-RS measurement.

[0103] First, data transmission and reception operations on a reference signal for RLM (RLM-RS) symbol in a PCell (primary cell) / PSCell (primary secondary cell) frequency (a frequency including at least one of a PCell and a PSCell) will be described.

[0104] <FR1> In FR1, if the SCS of the reference signal for RLM and the data are the same, the UE may assume that there is no scheduling restriction. That is, if the SCS of the reference signal for RLM and the data are the same, the UE may transmit and receive the data during radio link monitoring. Note that "during radio link monitoring" in the present disclosure may be interpreted as "on the RLM-RS symbol," "on the RLM-RS symbol and one symbol before and after the RLM-RS symbol," etc.

[0105] On the other hand, in FR1, when the SCS for the reference signal for RLM and the SCS for data are different, the UE may, for example, follow the following scheduling restrictions (Alt. 1-3, including no scheduling restrictions).

[0106] (Alt. 1) The UE is not expected to transmit or receive the reference signal for RLM and data at the same time (cannot transmit or receive). The UE may not expect to transmit or receive the reference signal for RLM and data during radio link monitoring if the SCS of the reference signal for RLM and the data are different. Such a scheduling restriction may be applied to all UEs communicating with the same PCell / PSCell frequency as the UE.

[0107] (Alt. 2) The UE may obey scheduling restrictions using UE Capability.

[0108] For example, in RRM measurements based on SSB, simultaneous transmission and reception capability (simultaneousRxDataSSB-DiffNumerology) of data with different numerologies and SSB is specified. When the reference signal for RLM (RLM-RS) is SSB, the above UE capability (simultaneousRxDataSSB-DiffNumerology) may be reused. A UE having this UE capability may transmit and receive data during radio link monitoring even if the SCS of the reference signal for RLM and the data are different. A UE not having this UE capability may assume that simultaneous transmission and reception (transmission and reception of the data) is not possible when the SCS of the reference signal for RLM and the data are different.

[0109] In addition, even if the reference signal for RLM is CSI-RS, the above UE capabilities may be reused. Or, a new UE capability may be defined that indicates the UE capability to transmit and receive data during radio link monitoring even if the SCS of the reference signal for RLM and the data are different. If the UE has the new UE capability, it may assume that the UE can transmit and receive data during radio link monitoring even if the SCS of the reference signal for RLM and the data are different.

[0110] If the reference signal for RLM is a specific reference signal (e.g., CSI-RS), the UE may assume that simultaneous transmission and reception (transmission and reception of the data) is not possible (i.e., it may not support simultaneous transmission and reception of data of an SCS different from the reference signal for RLM).

[0111] (Alt. 3) The UE may assume that there are no scheduling restrictions. That is, the UE may assume that the SCS can simultaneously transmit and receive reference signals and data for RLM (transmit and receive the data). Such scheduling restrictions may be applied in special cases for RLM.

[0112] ≪FR2≫ In FR2, the following scheduling constraints are considered from the viewpoint of analog BF:

[0113] In FR2, when the SCS of the RLM reference signal and data are the same, the UE may, for example, follow the following scheduling restrictions (Alt. ac including no scheduling restrictions). Note that in SSB-based RRM measurements, the UE cannot receive the analog reception BF simultaneously because it directs the analog reception BF to neighboring cells.

[0114] (Alt. a) The UE assumes that it cannot simultaneously transmit and receive RLM-RS and data, regardless of other conditions. This assumption allows for cases where the same beam is not necessarily used for RLM as for data transmission and reception, as in the case of SSB-based RRM measurements.

[0115] (Alt. b) The UE assumes that it can receive the RLM-RS and data simultaneously, depending on other conditions (e.g., on RLM-RS symbols that are quasi-co-located (QCL) with PDCCH). For example, if the UE is monitoring only active Transmission Configuration Indicator (TCI) states (TCI-states) (PDCCH beams) and QCL RSs as RLM-RS (e.g., if the UE is not explicitly specified), it may assume that the UE can transmit and receive the RLM-RS and data simultaneously, since RLM is assumed to be performed on the analog BF used for data transmission and reception.

[0116] In addition, the UE may control reception processing (e.g., at least one of demapping, demodulation, and decoding) of a channel (e.g., PDCCH, PDSCH) based on information (QCL information) on the QCL of the channel. Here, the QCL is an index indicating the statistical properties of the channel. For example, when a signal and another signal have a QCL relationship, it may mean that it can be assumed that at least one of the Doppler shift, Doppler spread, average delay, delay spread, and spatial parameters (e.g., spatial reception parameters (Spatial Rx Parameters)) is the same between these different signals (the signals are QCL with respect to at least one of these).

[0117] In addition, the spatial reception parameters may correspond to a reception beam (e.g., a reception analog beam) of the UE, and the beam may be specified based on a spatial QCL. The QCL and at least one element of the QCL in the present disclosure may be replaced with sQCL (spatial QCL).

[0118] The TCI state may indicate (may include) QCL information. The TCI state (and / or QCL information) may be, for example, information about the QCL between the target channel (or a Reference Signal (RS) for the channel) and another signal (e.g., another Downlink Reference Signal (DL-RS)).

[0119] (Alt. c) The UE assumes that it can simultaneously transmit and receive RLM-RS and data, regardless of other conditions. In other words, the UE assumes that there are no scheduling restrictions. This assumption allows for the case where RLM is performed only on the same beam as the analog beam for data.

[0120] On the other hand, in FR2, when the SCS of the reference signal for RLM and the SCS of data are different, the UE may follow the scheduling restriction based on any one of the above Alt. 1-3 and Alt. ac, or any combination of them. When the analog BF is common to data and RLM, it affects whether or not simultaneous transmission and reception of data and RLM-RS with different SCS is possible, so this can be handled.

[0121] Note that Alt. 1-3 may be a scheduling restriction other than Alt. 1-3 when the SCS of FR1 is different, and Alt. ac may be a scheduling restriction other than Alt. ac when the SCS of FR2 is the same.

[0122] <SCell Scheduling Restrictions in Intra-band CA and Inter-band CA> Next, a description will be given of scheduling restrictions on an SCell in intra-band CA or inter-band CA.

[0123] <In-band CA in FR1> When intra-band CA is performed in FR1, the UE may comply with the following restrictions (scheduling restrictions) for transmitting and receiving data on the SCell serving cell.

[0124] (Alt. 1) UE may follow the same scheduling restrictions as on PCell / PSCell in FR1. Note that this (Alt. 1) corresponds to the scheduling restrictions during SSB based RRM measurements, and is therefore compatible with SSB measurements.

[0125] (Alt. 2) The UE may assume that there are no scheduling restrictions, i.e., the UE may transmit and receive data during radio link monitoring on the SCell serving cell when intra-band CA is performed in FR1.

[0126] <In the case of inter-band CA in FR1> When inter-band CA is performed in FR1, the UE may comply with the following restrictions (scheduling restrictions) for transmitting and receiving data on the SCell serving cell.

[0127] (Alt. 1) The UE may be subject to the same scheduling restrictions as on a PCell / PSCell in FR1.

[0128] (Alt. 2) The UE may assume that there is no scheduling restriction. That is, the UE may transmit and receive data during radio link monitoring on the SCell serving cell when inter-band CA is performed in FR1. Note that this (Alt. 2) corresponds to a scheduling restriction during SSB-based RRM measurements, and is therefore compatible with SSB measurements.

[0129] <In-band CA in FR2> When intra-band CA is performed in FR2, the UE may comply with the following restrictions (scheduling restrictions) for transmitting and receiving data on the SCell serving cell.

[0130] (Alt. 1) UE may follow the same scheduling restrictions as on PCell / PSCell in FR2. Note that (Alt. 1) corresponds to the scheduling restrictions during SSB based RRM measurements, and is therefore compatible with SSB measurements.

[0131] (Alt. 2) The UE may assume that there are no scheduling restrictions, i.e., the UE may transmit and receive data during radio link monitoring on the SCell serving cell when intra-band CA is performed in FR2.

[0132] <In the case of inter-band CA in FR2> When inter-band CA is performed in FR2, the UE may comply with the following restrictions (scheduling restrictions) for transmitting and receiving data on the SCell serving cell.

[0133] (Alternative 1) The UE may follow the same scheduling restriction as on the FR2 PCell / PSCell. Note that since this (Alternative 1) corresponds to the scheduling restriction during RRM measurements based on SSB, it has an affinity with SSB measurements.

[0134] (Alternative 2) The UE may assume that there is no scheduling restriction. That is, when inter-band CA is being performed in FR2, the UE may transmit and receive data during radio link monitoring on the SCell serving cell.

[0135] ≪In the case of inter-band CA between FR1 and FR2≫ When inter-band CA is being performed between FR1 and FR2, the UE may assume that there is no scheduling restriction on the SCell serving cell. That is, when inter-band CA is being performed between FR1 and FR2, the UE may transmit and receive data during radio link monitoring on the SCell serving cell.

[0136] Next, some examples will be described in more detail regarding the scheduling restrictions in the above-mentioned various cases.

[0137] <Regarding the case where the reference signal for RLM (RLM-RS) is an SS block and the case of CSI-RS> Different scheduling restrictions may be defined according to the type (kind) of the reference signal for RLM (RLM-RS) (for example, in the case of an SS block and the case of CSI-RS). The type of the reference signal may also mean which of the SSB, CSI-RS, PSS, SSS, DMRS, MRS, beam-specific signal, etc. the reference signal is.

[0138] The UE may determine whether simultaneous transmission and reception of RLM-RS and data based on the first scheduling restriction when SSB is set as the RLM-RS, and based on the second scheduling restriction when CSI-RS is set as the RLM-RS.

[0139] For example, in FR1, when the SCS of the reference signal for RLM and the data is different and the reference signal for RLM is an SS block, the possibility of simultaneous transmission and reception may be determined according to whether the UE has a predetermined UE capability (for example, UE capability for RRM (such as simultaneousRxDataSSB-DiffNumerology, etc.)).

[0140] Also, in FR1, when the reference signal for RLM is CSI-RS, it is assumed that the UE capability (UE capability of RRM based on CSI-RS) that defines the measurement based on CSI-RS may not always be available. Therefore, when the reference signal for RLM is CSI-RS, the UE may assume that it is not possible to simultaneously transmit and receive RLM-RS and data regardless of whether the UE has the UE capability for RRM or not.

[0141] <Control of Scheduling Restrictions in RLM and RRM> The scheduling restriction in RLM may be considered to be relaxed compared to the scheduling restriction in the RRM measurement (SSB-based / CSI-RS-based RRM measurement) based on the SS block or CSI-RS. The RRM measurement based on the SSB may also be simply called the SSB measurement, and the RRM measurement based on CSI-RS may also be simply called the CSI-RS measurement. In the present disclosure, the RS used for the RRM measurement may also be called the RRM-RS.

[0142] When the UE is set to use the same type of reference signal for both the RRM measurement and the RLM measurement, different data transmission and reception controls (different scheduling restrictions may be assumed) may be applied for the measurement timing of the RRM-RS and the measurement timing of the RLM-RS.

[0143] Here, using the same type of reference signal for both RRM measurement and RLM measurement may mean, for example, that both RRM-RS and RLM-RS are configured to be SSB, or that both RRM-RS and RLM-RS are configured to be CSI-RS.

[0144] (Example 1) In the case of FR2, it is assumed that the analog BF is also directed to neighboring cells during RRM measurements based on SS blocks or CSI-RS, so it is assumed that the UE cannot transmit or receive data simultaneously with the RRM measurements. On the other hand, during RLM, it may be assumed that data transmission and reception is possible simultaneously with RLM depending on the conditions (such as when monitoring an active TCI state and a reference signal for RLM that is a QCL).

[0145] (Example 2) In a synchronized environment of FR1 and / or FR2, during RRM measurement, the arrival timing of the reference signal of a neighboring cell deviates from the frame timing of the serving cell by the propagation delay difference (+ synchronization error between base stations). For this reason, the UE assumes that data cannot be transmitted or received on the symbol of the reference signal for RRM (SSB, CSI-RS, etc.) or one symbol before or after the symbol. On the other hand, in RLM, the UE may assume that data cannot be transmitted or received simultaneously only on the symbol of the reference signal for RLM. This is because RLM does not monitor signals of neighboring cells but only monitors the signal of its own cell, eliminating the need for a margin of one or more symbols before or after.

[0146] According to the second embodiment described above, the UE can appropriately assume scheduling restrictions on data transmission and reception when measuring the RLM-RS.

[0147] <Third embodiment> The third embodiment relates to data transmission and reception during L1 measurement.

[0148] First, data transmission / reception operations on L1 measurement reference signal (L1-RS) symbols in a PCell (primary cell) / PSCell (primary secondary cell) frequency (a frequency including at least one of a PCell and a PSCell) will be described.

[0149] In addition, L1-RSRP measurements (measurements for reference signal received power (RSRP) in the physical layer and beam failure detection) are physical layer measurements and may be referred to as L1 measurements. The reference signal for L1 measurement in the present disclosure (which may be referred to as L1-RS, L1 measurement RS, etc.) may be interpreted as at least one of a reference signal for L1-RSRP and a reference signal for beam failure detection.

[0150] <FR1> In FR1, if the SCS of the L1 measurement reference signal and the data are the same, the UE may assume that there is no scheduling restriction. That is, if the SCS of the L1 measurement reference signal and the data are the same, the UE may transmit and receive the data during L1 measurement. Note that "during L1 measurement" in this disclosure may be interpreted as "on the L1-RS symbol," "on the L1-RS symbol and one symbol before and after the L1-RS symbol," etc.

[0151] On the other hand, in FR1, if the SCS of the L1 measurement reference signal and data are different, the UE may, for example, follow the following scheduling restrictions (Alt. 1-3, including no scheduling restriction).

[0152] (Alt. 1) The UE is not expected to transmit or receive L1 measurement reference signals and data at the same time (cannot transmit or receive). The UE may not expect to transmit or receive data during L1 measurement if the SCS of the L1 measurement reference signals and data are different. Such scheduling restrictions may be applied to all UEs communicating with the same PCell / PSCell frequency as the UE.

[0153] (Alt. 2) The UE may obey scheduling restrictions using UE Capability.

[0154] For example, in RRM measurements based on SSB, simultaneous transmission and reception capability (simultaneousRxDataSSB-DiffNumerology) of data of different numerologies and SSB is specified. When the L1 measurement reference signal (L1-RS) is SSB, the above UE capability (simultaneousRxDataSSB-DiffNumerology) may be reused. A UE having this UE capability may transmit and receive data during L1 measurement even if the SCS of the L1 measurement reference signal and the data are different. A UE not having this UE capability may assume that simultaneous transmission and reception (transmission and reception of the data) is not possible (it may not be assumed that simultaneous transmission and reception is performed) when the SCS of the L1 measurement reference signal and the data are different.

[0155] In addition, even if the reference signal for L1 measurement is CSI-RS, the above UE capabilities may be reused. Alternatively, a new UE capability may be defined that indicates the UE capability to transmit and receive data during L1 measurement that does not assume simultaneous transmission and reception even if the SCS of the reference signal for L1 measurement and the data are different. If the UE has the new UE capability, it may assume that the UE can transmit and receive data during L1 measurement even if the SCS of the reference signal for L1 measurement and the data are different.

[0156] If the reference signal for L1 measurement is a specific reference signal (e.g., CSI-RS), the UE may assume that simultaneous transmission and reception (transmission and reception of the data) is not possible (i.e., it may not support simultaneous transmission and reception of data of an SCS different from the reference signal for L1 measurement).

[0157] (Alt. 3) The UE may assume that there are no scheduling restrictions, i.e., the UE may assume that the UE can simultaneously transmit and receive reference signals and data for L1 measurements with different SCSs. Such scheduling restrictions may be applied for special handling of L1 measurements.

[0158] ≪FR2≫ In FR2, the following scheduling constraints are considered from the viewpoint of analog BF:

[0159] In FR2, when the SCS of the L1 measurement reference signal and data are the same, the UE may, for example, follow the following scheduling restrictions (Alt. ac including no scheduling restrictions): Note that in SSB-based RRM measurements, the UE cannot receive them simultaneously because the analog reception BF is directed to a neighboring cell.

[0160] (Alt. a) The UE shall assume that it cannot simultaneously transmit and receive L1-RS and data, regardless of other conditions.

[0161] (Alt. b) The UE may assume that it can receive L1-RS and data simultaneously, depending on other conditions (e.g., on L1-RS symbols that are PDCCH and QCL). For example, if the UE is monitoring only active TCI states (PDCCH beams) and QCL RSs as L1-RSs (e.g., if the UE has not explicitly specified L1-RS), the UE may assume that it can transmit and receive L1-RS and data simultaneously.

[0162] (Alt. c) The UE is assumed to be able to simultaneously transmit and receive L1-RS and data, regardless of other conditions (always). That is, the UE is assumed to have no scheduling restrictions. Since only the beam of the serving cell is considered to be the measurement target during L1 measurement, this assumption allows for the case where L1 measurements are only performed on the same beam as the analog BF used for data.

[0163] Note that the above (Alt. 1-3), (Alt. ac), etc. may use different assumptions for L1-RSRP measurement and beam obstruction detection. For example, the UE may follow the scheduling constraints of (Alt. a) for L1-RSRP measurement and the scheduling constraints of (Alt. c) for beam obstruction detection.

[0164] On the other hand, in FR2, if the SCS of the L1 measurement reference signal and data are different, the UE may follow the scheduling restriction based on any one of Alt. 1-3 and Alt. ac above, or any combination of them. If the analog BF is common to data and L1 measurement, it affects whether or not simultaneous transmission and reception of data and L1-RS with different SCS is possible, so this can be handled.

[0165] Note that Alt. 1-3 may be a scheduling restriction other than Alt. 1-3 when the SCS of FR1 is different, and Alt. ac may be a scheduling restriction other than Alt. ac when the SCS of FR2 is the same.

[0166] <Serving cell scheduling restrictions in intra-band CA and inter-band CA> Next, a description will be given of scheduling restrictions on a serving cell in intra-band CA or inter-band CA.

[0167] <In-band CA in FR1> When intra-band CA is performed in FR1, the UE may comply with the following restrictions (scheduling restrictions) on transmitting and receiving data on the serving cell:

[0168] (Alt. 1) The UE may be subject to the same scheduling restrictions as on the serving cell performing FR1 L1 measurements. Note that this (Alt. 1) corresponds to the scheduling restrictions during SSB based RRM measurements and is therefore compatible with SSB measurements.

[0169] (Alt. 2) The UE may assume no scheduling restrictions, i.e., the UE may transmit or receive data on the serving cell during L1 measurements on other serving cells when intra-band CA is performed in FR1.

[0170] <In the case of inter-band CA in FR1> When inter-band CA is performed in FR1, the UE may comply with the following restrictions (scheduling restrictions) for transmitting and receiving data on the serving cell.

[0171] (Alt. 1) The UE may be subject to the same scheduling restrictions as on the serving cell in which it is making L1 measurements in FR1.

[0172] (Alt. 2) The UE may assume that there are no scheduling restrictions. That is, the UE may transmit and receive data on the serving cell during L1 measurements on the serving cell of another band when inter-band CA is performed in FR1. Note that this (Alt. 2) corresponds to a scheduling restriction during SSB-based RRM measurements, and is therefore compatible with SSB measurements.

[0173] <In-band CA in FR2> When intra-band CA is performed in FR2, the UE may comply with the following restrictions (scheduling restrictions) on transmitting and receiving data on the serving cell:

[0174] (Alt. 1) The UE may be subject to the same scheduling restrictions as on the serving cell performing FR2 L1 measurements. Note that this (Alt. 1) corresponds to the scheduling restrictions during SSB based RRM measurements and is therefore compatible with SSB measurements.

[0175] (Alt. 2) The UE may assume no scheduling restrictions, i.e., the UE may transmit or receive data on the serving cell during L1 measurements on other serving cells when in-band CA is performed in FR2.

[0176] <In the case of inter-band CA in FR2> When inter-band CA is performed in FR2, the UE may comply with the following restrictions (scheduling restrictions) on transmitting and receiving data on the serving cell:

[0177] (Alt. 1) The UE may be subject to the same scheduling restrictions as on the serving cell performing FR2 L1 measurements. Note that this (Alt. 1) corresponds to the scheduling restrictions during SSB based RRM measurements and is therefore compatible with SSB measurements.

[0178] (Alt. 2) The UE may assume no scheduling restrictions, i.e., the UE may transmit or receive data on the serving cell during L1 measurements on the serving cell of the other band when inter-band CA is performed in FR2.

[0179] <In the case of inter-band CA between FR1 and FR2> When inter-band CA is performed between FR1 and FR2, the UE may assume that there is no scheduling restriction on the serving cell. That is, when inter-band CA is performed between FR1 and FR2, the UE may transmit and receive data on the FR1 serving cell during L1 measurement on the FR2 serving cell. Also, the UE may transmit and receive data on the FR2 serving cell during L1 measurement on the FR1 serving cell.

[0180] Next, some examples of scheduling constraints in the various cases mentioned above will be described in more detail.

[0181] <Regarding the case where the reference signal for L1 measurement (L1-RS) is an SS block and the case where it is a CSI-RS> Different scheduling restrictions may be defined according to the type (category) of the reference signal for L1 measurement (L1-RS) (for example, between the case of an SS block and the case of a CSI-RS). The UE may determine whether simultaneous transmission and reception of L1-RS and data is possible based on the first scheduling restriction when the SSB is set as the L1-RS, and may determine it based on the second scheduling restriction when the CSI-RS is set as the L1-RS.

[0182] For example, in FR1, when the SCS of the reference signal for L1 measurement and the data is different and the reference signal for L1 measurement is an SS block, whether simultaneous transmission and reception is possible may be determined according to whether the UE has a predetermined UE capability (for example, UE capability for RRM (such as simultaneousRxDataSSB-DiffNumerology)).

[0183] Also, in FR1, when the reference signal for L1 measurement is a CSI-RS, it is assumed that the UE capability that defines the measurement based on the CSI-RS (UE capability of RRM based on CSI-RS) may not always be available. Therefore, when the reference signal for L1 measurement is a CSI-RS, the UE may assume that simultaneous transmission and reception of L1-RS and data is not possible regardless of whether it has the UE capability for RRM.

[0184] <Control of Scheduling Restrictions in L1 Measurement and RRM> The scheduling restriction in L1 measurement may be relaxed compared to the scheduling restriction in the RRM measurement based on the SS block or CSI-RS (SSB-based / CSI-RS-based RRM measurement). The RRM measurement based on the SSB may also be simply called the SSB measurement, and the RRM measurement based on the CSI-RS may also be simply called the CSI-RS measurement.

[0185] When the UE is configured to use the same type of reference signal for both RRM measurements and L1 measurements, the UE may apply different data transmission and reception controls (different scheduling restrictions may be assumed) for the RRM-RS measurement timing and the L1-RS measurement timing.

[0186] Here, using the same type of reference signal for both RRM measurement and L1 measurement may mean, for example, that both the RRM-RS and the L1-RS are configured to be SSBs, or that both the RRM-RS and the L1-RS are configured to be CSI-RSs.

[0187] When the UE is configured to use the same type of reference signal for both RLM measurements and L1 measurements, it may apply different data transmission and reception controls (different scheduling restrictions may be assumed) for the RLM-RS measurement timing and the L1-RS measurement timing.

[0188] (Example 1) In the case of FR2, since it is assumed that the analog BF is also directed to neighboring cells during RRM measurements based on SS blocks or CSI-RS, it is assumed that the UE cannot transmit or receive data simultaneously with the RRM measurements. On the other hand, since only the beam of the serving cell is measured during L1 measurements, it may be assumed that data transmission and reception simultaneously with L1 measurements is possible at least under certain conditions (for example, when only active TCI state (PDCCH beam) and QCL RS are monitored as L1-RS).

[0189] (Example 2) In an FR1 and / or FR2 synchronized environment, during RRM measurement, the arrival timing of a reference signal from a neighboring cell deviates from the frame timing of the serving cell by the propagation delay difference (+inter-base station synchronization error). For this reason, the UE assumes that data cannot be transmitted or received on the symbol of the reference signal for RRM (SSB, CSI-RS, etc.) or one symbol before or after that symbol. On the other hand, in L1 measurement, the UE may assume that data cannot be transmitted or received simultaneously only on the symbol of the reference signal for L1 measurement. This is because L1 measurement does not measure signals from neighboring cells, but only the signal from the own cell, eliminating the need for a margin of one or more symbols before or after.

[0190] According to the third embodiment described above, the UE can appropriately assume scheduling restrictions on data transmission and reception during L1 measurement.

[0191] <Modification> When at least two of the RRM measurements (e.g., SSB measurements, CSI-RS measurements), RLM-RS measurements, and L1 measurements are performed in the same symbol, it may be assumed that one of the scheduling restrictions for data transmission and reception assumed in the measurements performed is applied preferentially (e.g., the strictest scheduling restriction is applied).

[0192] For example, when CSI-RS measurement and RLM-RS measurement are performed in the same symbol, and data transmission / reception is assumed not to be possible simultaneously with CSI-RS measurement, but data transmission / reception is assumed to be possible simultaneously with RLM-RS measurement, the UE may assume that data transmission / reception is not possible in that symbol.

[0193] In the above embodiment, a configuration has been mainly assumed in which one frequency range includes multiple carriers and one carrier includes multiple cells, but in the present disclosure, the frequency range, cell, serving cell, carrier, band, and CC may be interpreted as being interchangeable.

[0194] In addition, in the present disclosure, "different frequency measurement" may be read as "handover", and in this case, "measurement subject" may be read as "target".

[0195] (Wireless communication system) A configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination of these methods.

[0196] 5 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment. In the wireless communication system 1, carrier aggregation (CA) and / or dual connectivity (DC) can be applied, in which a plurality of basic frequency blocks (component carriers) are integrated into one unit, the system bandwidth (e.g., 20 MHz) of the LTE system.

[0197] The wireless communication system 1 may be referred to as LTE (Long Term Evolution), LTE-A (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), NR (New Radio), FRA (Future Radio Access), New-RAT (Radio Access Technology), etc., or may be referred to as a system that realizes these.

[0198] The wireless communication system 1 includes a wireless base station 11 that forms a macrocell C1 with a relatively wide coverage, and wireless base stations 12 (12a-12c) that are arranged in the macrocell C1 and form small cells C2 that are narrower than the macrocell C1. User terminals 20 are arranged in the macrocell C1 and each small cell C2. The arrangement and number of each cell and user terminal 20 are not limited to the embodiment shown in the figure.

[0199] The user terminal 20 can be connected to both the radio base station 11 and the radio base station 12. It is assumed that the user terminal 20 uses the macro cell C1 and the small cell C2 simultaneously using CA or DC. The user terminal 20 may also apply CA or DC using multiple cells (CC).

[0200] Communication between the user terminal 20 and the radio base station 11 can be performed using a carrier (also called an existing carrier, legacy carrier, etc.) with a relatively low frequency band (e.g., 2 GHz) and narrow bandwidth. On the other hand, a carrier with a relatively high frequency band (e.g., 3.5 GHz, 5 GHz, etc.) and wide bandwidth may be used between the user terminal 20 and the radio base station 12, or the same carrier as between the user terminal 20 and the radio base station 11 may be used. Note that the configuration of the frequency bands used by each radio base station is not limited to this.

[0201] Furthermore, the user terminal 20 can communicate in each cell using time division duplex (TDD) and / or frequency division duplex (FDD). Furthermore, a single numerology may be applied in each cell (carrier), or multiple different numerologies may be applied.

[0202] Numerology may be a communication parameter applied to the transmission and / or reception of a certain signal and / or channel, and may indicate at least one of, for example, subcarrier spacing, bandwidth, symbol length, cyclic prefix length, subframe length, TTI length, number of symbols per TTI, radio frame configuration, a specific filtering process performed by a transceiver in the frequency domain, a specific windowing process performed by a transceiver in the time domain, etc. For example, when the subcarrier spacing of constituent OFDM symbols and / or the number of OFDM symbols are different for a certain physical channel, the numerology may be said to be different.

[0203] The wireless base station 11 and the wireless base station 12 (or the two wireless base stations 12) may be connected by wire (for example, optical fiber conforming to CPRI (Common Public Radio Interface), X2 interface, etc.) or wirelessly.

[0204] The radio base station 11 and each radio base station 12 are each connected to a higher station device 30, and are connected to a core network 40 via the higher station device 30. The higher station device 30 includes, but is not limited to, an access gateway device, a radio network controller (RNC), a mobility management entity (MME), and the like. Each radio base station 12 may be connected to the higher station device 30 via the radio base station 11.

[0205] The radio base station 11 is a radio base station having a relatively wide coverage, and may be called a macro base station, an aggregation node, an eNodeB (eNB), a transmission / reception point, etc. The radio base station 12 is a radio base station having a local coverage, and may be called a small base station, a micro base station, a pico base station, a femto base station, a Home eNodeB (HeNB), a Remote Radio Head (RRH), a transmission / reception point, etc. Hereinafter, when there is no need to distinguish between the radio base stations 11 and 12, they are collectively referred to as the radio base station 10.

[0206] Each user terminal 20 is a terminal compatible with various communication methods such as LTE and LTE-A, and may include not only a mobile communication terminal (mobile station) but also a fixed communication terminal (fixed station).

[0207] In the wireless communication system 1, as a wireless access scheme, Orthogonal Frequency Division Multiple Access (OFDMA) is applied to the downlink, and Single Carrier Frequency Division Multiple Access (SC-FDMA) and / or OFDMA is applied to the uplink.

[0208] OFDMA is a multi-carrier transmission method that divides a frequency band into multiple narrow frequency bands (subcarriers) and maps data to each subcarrier for communication. SC-FDMA is a single-carrier transmission method that divides a system bandwidth into bands consisting of one or consecutive resource blocks for each terminal, and multiple terminals use different bands to reduce interference between terminals. Note that the uplink and downlink wireless access methods are not limited to the combination of these, and other wireless access methods may be used.

[0209] In the wireless communication system 1, a downlink shared channel (PDSCH: Physical Downlink Shared Channel) shared by each user terminal 20, a broadcast channel (PBCH: Physical Broadcast Channel), a downlink L1 / L2 control channel, etc. are used as downlink channels. User data, upper layer control information, SIB (System Information Block), etc. are transmitted by the PDSCH. Furthermore, MIB (Master Information Block) is transmitted by the PBCH.

[0210] The downlink L1 / L2 control channels include a PDCCH (Physical Downlink Control Channel), an EPDCCH (Enhanced Physical Downlink Control Channel), a PCFICH (Physical Control Format Indicator Channel), a PHICH (Physical Hybrid-ARQ Indicator Channel), etc. Downlink control information (DCI: Downlink Control Information) including scheduling information of a PDSCH and / or a PUSCH, etc., is transmitted by the PDCCH.

[0211] In addition, DCI for scheduling DL data reception may be called DL assignment, and DCI for scheduling UL data transmission may be called UL grant.

[0212] The number of OFDM symbols used for the PDCCH is transmitted by the PCFICH. The PHICH transmits delivery confirmation information (e.g., retransmission control information, also called HARQ-ACK, ACK / NACK, etc.) of the HARQ (Hybrid Automatic Repeat reQuest) for the PUSCH. The EPDCCH is frequency division multiplexed with the PDSCH (Downlink Shared Data Channel) and is used for transmitting DCI, etc., like the PDCCH.

[0213] In the wireless communication system 1, as uplink channels, an uplink shared channel (PUSCH: Physical Uplink Shared Channel) shared by each user terminal 20, an uplink control channel (PUCCH: Physical Uplink Control Channel), a random access channel (PRACH: Physical Random Access Channel), and the like are used. The PUSCH transmits user data, higher layer control information, and the like. The PUCCH transmits downlink radio quality information (CQI: Channel Quality Indicator), delivery acknowledgement information, scheduling request (SR), and the like. The PRACH transmits a random access preamble for establishing a connection with a cell.

[0214] In the wireless communication system 1, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), etc. are transmitted as downlink reference signals. In addition, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. are transmitted as uplink reference signals. Note that the DMRS may be called a user equipment specific reference signal (UE-specific Reference Signal). In addition, the reference signals to be transmitted are not limited to these.

[0215] (Radio base station) 6 is a diagram showing an example of the overall configuration of a wireless base station according to an embodiment. The wireless base station 10 includes a plurality of transmitting / receiving antennas 101, an amplifier unit 102, a transmitting / receiving unit 103, a baseband signal processing unit 104, a call processing unit 105, and a transmission path interface 106. Note that the wireless base station 10 may be configured to include one or more of each of the transmitting / receiving antennas 101, the amplifier unit 102, and the transmitting / receiving unit 103.

[0216] User data to be transmitted from the radio base station 10 to the user terminal 20 on the downlink is input from the higher-level station device 30 to the baseband signal processing unit 104 via the transmission path interface 106 .

[0217] In the baseband signal processing unit 104, transmission processes such as Packet Data Convergence Protocol (PDCP) layer processing, user data division and joining, Radio Link Control (RLC) layer transmission processes such as RLC retransmission control, Medium Access Control (MAC) retransmission control (e.g., HARQ transmission process), scheduling, transmission format selection, channel coding, Inverse Fast Fourier Transform (IFFT) processing, and precoding processing are performed on the user data, and the data is transferred to the transceiver unit 103. In addition, transmission processes such as channel coding and inverse fast Fourier transform are also performed on the downlink control signal, and the data is transferred to the transceiver unit 103.

[0218] The transmitting / receiving unit 103 converts the baseband signal output from the baseband signal processing unit 104 after precoding for each antenna into a radio frequency band and transmits the converted signal. The radio frequency signal frequency-converted by the transmitting / receiving unit 103 is amplified by the amplifier unit 102 and transmitted from the transmitting / receiving antenna 101. The transmitting / receiving unit 103 can be configured from a transmitter / receiver, a transmitting / receiving circuit, or a transmitting / receiving device that are explained based on a common understanding in the technical field to which the present disclosure relates. Note that the transmitting / receiving unit 103 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit.

[0219] On the other hand, for an uplink signal, a radio frequency signal received by the transmitting / receiving antenna 101 is amplified by the amplifier unit 102. The transmitting / receiving unit 103 receives the uplink signal amplified by the amplifier unit 102. The transmitting / receiving unit 103 frequency-converts the received signal to a baseband signal and outputs the signal to the baseband signal processing unit 104.

[0220] The baseband signal processing unit 104 performs Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing, error correction decoding, MAC retransmission control reception processing, and RLC layer and PDCP layer reception processing on the user data included in the input uplink signal, and transfers the data to the higher level station device 30 via a transmission path interface 106. The call processing unit 105 performs call processing (setting, releasing, etc.) of communication channels, status management of the wireless base station 10, management of wireless resources, etc.

[0221] The transmission line interface 106 transmits and receives signals to and from the higher-level station device 30 via a predetermined interface. The transmission line interface 106 may also transmit and receive signals (backhaul signaling) to and from other wireless base stations 10 via an inter-base station interface (for example, an optical fiber conforming to CPRI (Common Public Radio Interface), an X2 interface).

[0222] The transmitting / receiving unit 103 may further include an analog beam forming unit that performs analog beam forming. The analog beam forming unit may be configured with an analog beam forming circuit (e.g., a phase shifter, a phase shift circuit) or an analog beam forming device (e.g., a phase shifter) that is explained based on a common understanding in the technical field related to the present invention. The transmitting / receiving antenna 101 may be configured with, for example, an array antenna.

[0223] 7 is a diagram illustrating an example of a functional configuration of a wireless base station according to an embodiment of the present disclosure. Note that this example mainly illustrates functional blocks of characteristic parts of this embodiment, and the wireless base station 10 may be assumed to also have other functional blocks necessary for wireless communication.

[0224] The baseband signal processing unit 104 includes at least a control unit (scheduler) 301, a transmission signal generating unit 302, a mapping unit 303, a reception signal processing unit 304, and a measurement unit 305. Note that these components only need to be included in the radio base station 10, and some or all of the components do not necessarily need to be included in the baseband signal processing unit 104.

[0225] The control unit (scheduler) 301 performs overall control of the radio base station 10. The control unit 301 can be configured with a controller, a control circuit, or a control device that is described based on common understanding in the technical field to which the present disclosure relates.

[0226] The control unit 301 controls, for example, signal generation in the transmission signal generation unit 302, signal allocation in the mapping unit 303, etc. The control unit 301 also controls signal reception processing in the reception signal processing unit 304, signal measurement in the measurement unit 305, etc.

[0227] The control unit 301 controls the scheduling (e.g., resource allocation) of system information, downlink data signals (e.g., signals transmitted on PDSCH), and downlink control signals (e.g., signals transmitted on PDCCH and / or EPDCCH, such as delivery acknowledgement information). In addition, the control unit 301 controls the generation of downlink control signals, downlink data signals, etc., based on the result of determining whether or not retransmission control is required for uplink data signals.

[0228] The control unit 301 controls the scheduling of synchronization signals (for example, PSS (Primary Synchronization Signal) / SSS (Secondary Synchronization Signal)), downlink reference signals (for example, CRS, CSI-RS, DMRS), and the like.

[0229] The control unit 301 controls the scheduling of uplink data signals (e.g., signals transmitted on PUSCH), uplink control signals (e.g., signals transmitted on PUCCH and / or PUSCH, such as delivery acknowledgement information), random access preambles (e.g., signals transmitted on PRACH), uplink reference signals, etc.

[0230] The control unit 301 may control the formation of a transmission beam and / or a reception beam using a digital BF (e.g., precoding) in the baseband signal processing unit 104 and / or an analog BF (e.g., phase rotation) in the transmission / reception unit 103. The control unit 301 may control the formation of a beam based on downlink propagation path information, uplink propagation path information, etc. The propagation path information may be acquired from the reception signal processing unit 304 and / or the measurement unit 305.

[0231] The transmission signal generating unit 302 generates downlink signals (downlink control signals, downlink data signals, downlink reference signals, etc.) based on instructions from the control unit 301, and outputs the generated downlink signals to the mapping unit 303. The transmission signal generating unit 302 can be configured from a signal generator, a signal generating circuit, or a signal generating device described based on common understanding in the technical field related to the present disclosure.

[0232] The transmission signal generating unit 302 generates a DL assignment for notifying allocation information of downlink data and / or a UL grant for notifying allocation information of uplink data, for example, based on an instruction from the control unit 301. Both the DL assignment and the UL grant are DCI and follow the DCI format. In addition, the downlink data signal is coded and modulated according to a coding rate, a modulation method, and the like determined based on channel state information (CSI) from each user terminal 20, and the like.

[0233] The mapping unit 303 maps the downlink signal generated by the transmission signal generating unit 302 to a predetermined radio resource based on an instruction from the control unit 301, and outputs the mapped signal to the transmitting / receiving unit 103. The mapping unit 303 can be configured from a mapper, a mapping circuit, or a mapping device described based on a common understanding in the technical field related to the present disclosure.

[0234] The received signal processing unit 304 performs reception processing (e.g., demapping, demodulation, decoding, etc.) on the received signal input from the transmitting / receiving unit 103. Here, the received signal is, for example, an uplink signal (uplink control signal, uplink data signal, uplink reference signal, etc.) transmitted from the user terminal 20. The received signal processing unit 304 can be configured with a signal processor, a signal processing circuit, or a signal processing device described based on common understanding in the technical field related to the present disclosure.

[0235] The received signal processing unit 304 outputs information decoded by the receiving process to the control unit 301. For example, when a PUCCH including an HARQ-ACK is received, the received signal processing unit 304 outputs the HARQ-ACK to the control unit 301. In addition, the received signal processing unit 304 outputs the received signal and / or the signal after the receiving process to the measurement unit 305.

[0236] The measurement unit 305 performs measurements on the received signal. The measurement unit 305 can be configured with a measurement instrument, a measurement circuit, or a measurement device described based on common understanding in the technical field to which the present disclosure relates.

[0237] For example, the measurement unit 305 may perform RRM (Radio Resource Management) measurement, channel estimation, etc., based on the received signal. The measurement unit 305 may measure received power (e.g., RSRP (Reference Signal Received Power)), received quality (e.g., RSRQ (Reference Signal Received Quality), SINR (Signal to Interference plus Noise Ratio), SNR (Signal to Noise Ratio)), signal strength (e.g., RSSI (Received Signal Strength Indicator)), propagation path information (e.g., CSI (Channel State Information)), etc. The measurement result may be output to the control unit 301.

[0238] The transceiver 103 transmits at least one of the SSB, CSI-RS, RLM-RS, and L1-RS. The transceiver 103 may transmit and / or receive data in a cell in which at least one of the SSB measurement, the CSI-RS measurement, the RLM-RS measurement, and the L1 measurement is configured. The transceiver 103 may transmit information related to the same-frequency measurement and / or the different-frequency measurement to the user terminal 20.

[0239] (User terminal) 8 is a diagram showing an example of the overall configuration of a user terminal according to an embodiment. The user terminal 20 includes a plurality of transmitting / receiving antennas 201, an amplifier unit 202, a transmitting / receiving unit 203, a baseband signal processing unit 204, and an application unit 205. Note that the user terminal 20 may be configured to include one or more of each of the transmitting / receiving antennas 201, the amplifier unit 202, and the transmitting / receiving unit 203.

[0240] The radio frequency signal received by the transmitting / receiving antenna 201 is amplified by the amplifier unit 202. The transmitting / receiving unit 203 receives the downlink signal amplified by the amplifier unit 202. The transmitting / receiving unit 203 frequency-converts the received signal to a baseband signal and outputs the signal to the baseband signal processing unit 204. The transmitting / receiving unit 203 can be configured from a transmitter / receiver, a transmitting / receiving circuit, or a transmitting / receiving device that are explained based on a common understanding in the technical field to which the present disclosure relates. Note that the transmitting / receiving unit 203 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit.

[0241] The baseband signal processing unit 204 performs FFT processing, error correction decoding, retransmission control reception processing, etc. on the input baseband signal. Downlink user data is transferred to the application unit 205. The application unit 205 performs processing related to layers higher than the physical layer and the MAC layer, etc. Among the downlink data, broadcast information may also be transferred to the application unit 205.

[0242] On the other hand, uplink user data is input from the application unit 205 to the baseband signal processing unit 204. The baseband signal processing unit 204 performs transmission processing for retransmission control (for example, transmission processing for HARQ), channel coding, precoding, Discrete Fourier Transform (DFT) processing, IFFT processing, and the like, and transfers the data to the transceiver unit 203.

[0243] The transmitting / receiving unit 203 converts the baseband signal output from the baseband signal processing unit 204 into a radio frequency band and transmits it. The radio frequency signal frequency-converted by the transmitting / receiving unit 203 is amplified by the amplifier unit 202 and transmitted from the transmitting / receiving antenna 201.

[0244] The transmitting / receiving unit 203 may further include an analog beam forming unit that performs analog beam forming. The analog beam forming unit may be configured with an analog beam forming circuit (e.g., a phase shifter, a phase shift circuit) or an analog beam forming device (e.g., a phase shifter) that is explained based on a common understanding in the technical field related to the present invention. The transmitting / receiving antenna 201 may be configured with, for example, an array antenna.

[0245] 9 is a diagram showing an example of a functional configuration of a user terminal according to an embodiment. Note that in this example, functional blocks of the characteristic parts of this embodiment are mainly shown, and the user terminal 20 may be assumed to have other functional blocks necessary for wireless communication.

[0246] The baseband signal processing unit 204 of the user terminal 20 includes at least a control unit 401, a transmission signal generating unit 402, a mapping unit 403, a reception signal processing unit 404, and a measurement unit 405. Note that these components only need to be included in the user terminal 20, and some or all of the components do not necessarily need to be included in the baseband signal processing unit 204.

[0247] The control unit 401 performs overall control of the user terminal 20. The control unit 401 can be configured from a controller, a control circuit, or a control device that is described based on common understanding in the technical field to which the present disclosure relates.

[0248] The control unit 401 controls, for example, signal generation in the transmission signal generation unit 402, signal allocation in the mapping unit 403, etc. The control unit 401 also controls signal reception processing in the reception signal processing unit 404, signal measurement in the measurement unit 405, etc.

[0249] The control unit 401 acquires the downlink control signal and the downlink data signal transmitted from the radio base station 10 from the received signal processing unit 404. The control unit 401 controls the generation of the uplink control signal and / or the uplink data signal based on the result of judging whether or not retransmission control is required for the downlink control signal and / or the downlink data signal.

[0250] The control unit 401 may control the formation of a transmission beam and / or a reception beam using a digital BF (e.g., precoding) in the baseband signal processing unit 204 and / or an analog BF (e.g., phase rotation) in the transmission / reception unit 203. The control unit 401 may control the formation of a beam based on downlink propagation path information, uplink propagation path information, etc. The propagation path information may be acquired from the reception signal processing unit 404 and / or the measurement unit 405.

[0251] Furthermore, when the control unit 401 acquires various pieces of information notified by the wireless base station 10 from the received signal processing unit 404, the control unit 401 may update parameters used for control based on the information.

[0252] The transmission signal generating unit 402 generates uplink signals (uplink control signals, uplink data signals, uplink reference signals, etc.) based on instructions from the control unit 401, and outputs the signals to the mapping unit 403. The transmission signal generating unit 402 can be configured from a signal generator, a signal generating circuit, or a signal generating device that is described based on common understanding in the technical field related to the present disclosure.

[0253] The transmission signal generating unit 402 generates uplink control signals related to acknowledgement information, channel state information (CSI), etc., based on, for example, an instruction from the control unit 401. The transmission signal generating unit 402 also generates uplink data signals based on an instruction from the control unit 401. For example, when a downlink control signal notified from the radio base station 10 includes an UL grant, the transmission signal generating unit 402 is instructed by the control unit 401 to generate an uplink data signal.

[0254] The mapping unit 403 maps the uplink signal generated by the transmission signal generating unit 402 to a radio resource based on an instruction from the control unit 401, and outputs the result to the transceiver unit 203. The mapping unit 403 can be configured from a mapper, a mapping circuit, or a mapping device that is described based on common understanding in the technical field related to the present disclosure.

[0255] The received signal processing unit 404 performs reception processing (e.g., demapping, demodulation, decoding, etc.) on the received signal input from the transmitting / receiving unit 203. Here, the received signal is, for example, a downlink signal (downlink control signal, downlink data signal, downlink reference signal, etc.) transmitted from the radio base station 10. The received signal processing unit 404 can be configured from a signal processor, a signal processing circuit, or a signal processing device described based on common understanding in the technical field related to the present disclosure. Furthermore, the received signal processing unit 404 can configure a receiving unit related to the present disclosure.

[0256] The received signal processing unit 404 outputs information decoded by the receiving process to the control unit 401. The received signal processing unit 404 outputs, for example, broadcast information, system information, RRC signaling, DCI, and the like to the control unit 401. In addition, the received signal processing unit 404 outputs the received signal and / or the signal after the receiving process to the measurement unit 405.

[0257] The measurement unit 405 performs measurements on the received signal. The measurement unit 405 can be configured with a measurement instrument, a measurement circuit, or a measurement device described based on common understanding in the technical field to which the present disclosure relates.

[0258] For example, the measurement unit 405 may perform RRM measurement, channel estimation, etc. based on the received signal. The measurement unit 405 may 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 result may be output to the control unit 401.

[0259] The transceiver 203 receives at least one of an SSB, a CSI-RS, an RLM-RS, and an L1-RS. The received RS may be used for measurement in the measurement unit 405. The transceiver 203 may transmit and / or receive data in a cell in which at least one of an SSB measurement, a CSI-RS measurement, an RLM-RS measurement, and an L1 measurement is configured.

[0260] The control unit 401 may determine whether or not to control (for example, whether or not to permit) data transmission and reception at the timing of measuring the CSI-RS, based on whether or not a synchronous environment can be assumed.

[0261] When a synchronous environment can be assumed, control unit 401 does not need to assume that data with a subcarrier interval different from that of the CSI-RS is transmitted and received in the CSI-RS symbol and one symbol before and after the CSI-RS symbol.

[0262] When a synchronous environment cannot be assumed, control unit 401 measures the CSI-RS with a subcarrier spacing different from that of the data in the serving cell within a measurement gap, and does not need to assume transmission and reception of data in the serving cell within the measurement gap.

[0263] If the control unit 401 cannot assume a synchronous environment, it measures the CSI-RS within a set specified period, and does not need to assume that data with a subcarrier spacing different from the CSI-RS will be transmitted or received within the specified period.

[0264] The control unit 401 may assume that the environment is synchronous if there is a CSI-RS for which no associated synchronization signal block is configured among all the configured CSI-RS.

[0265] The measurement unit 405 may perform at least one of a measurement for Radio Link Monitoring (RLM) and an L1 measurement using a predetermined reference signal in a specific frequency band.

[0266] The control unit 401 may control data transmission / reception on the specific frequency band during the measurement based on a sub-carrier spacing (SCS: Sub-Carrier Spacing) of the predetermined reference signal. Note that "control of data transmission / reception" may include control of whether or not data is transmitted / received.

[0267] The control unit 401 may control the data transmission and reception based on the relationship between the subcarrier spacing of the predetermined reference signal and the subcarrier spacing of data.

[0268] The control unit 401 may control the data transmission and reception using information indicating UE capabilities related to Radio Resource Management (RRM) measurements.

[0269] The control unit 401 may assume that the conditions under which data can be transmitted and received during at least one of the RLM measurement and the L1 measurement are looser (relaxed) than the conditions under which data can be transmitted and received during the RRM measurement. Note that the term "loose" is explained in the examples described in the second and third embodiments.

[0270] (Hardware configuration) The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. The method of realizing each functional block is not particularly limited. That is, each functional block may be realized by using one device that is physically or logically combined, or may be realized by using two or more devices that are physically or logically separated and directly or indirectly connected (for example, by using wires, wirelessly, etc.) and these multiple devices.

[0271] For example, a radio base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 10 is a diagram showing an example of a hardware configuration of a radio base station and a user terminal according to an embodiment. The above-mentioned radio base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0272] In the following description, the term "apparatus" may be interpreted as a circuit, a device, a unit, etc. The hardware configuration of the radio base station 10 and the user terminal 20 may be configured to include one or more of the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0273] For example, although only one processor 1001 is shown, there may be multiple processors. Also, the processes may be performed by one processor, or the processes may be performed by two or more processors simultaneously, sequentially, or in other manners. Also, the processor 1001 may be implemented by one or more chips.

[0274] Each function in the radio base station 10 and the user terminal 20 is realized, for example, by loading a specific software (program) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communications via a communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0275] The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may be configured with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned baseband signal processing unit 104 (204), call processing unit 105, etc. may be realized by the processor 1001.

[0276] Furthermore, the processor 1001 reads out programs (program codes), 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 according to these. As the programs, programs that cause a computer to execute at least a part of the operations described in the above-mentioned embodiments are used. For example, the control unit 401 of the user terminal 20 may be realized by a control program stored in the memory 1002 and operated by the processor 1001, and other functional blocks may be realized in a similar manner.

[0277] The memory 1002 is a computer-readable recording medium, and may be configured by at least one of, for example, a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically EPROM (EEPROM), a Random Access Memory (RAM), and other suitable storage media. The memory 1002 may also be called a register, a cache, a main memory (primary storage device), and the like. The memory 1002 can store a program (program code), a software module, and the like that is executable to implement a wireless communication method according to an embodiment of the present disclosure.

[0278] Storage 1003 is a computer-readable recording medium, and may be constituted by at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disk (CD-ROM (Compact Disc ROM)), a digital versatile 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, a stick, a key drive), a magnetic stripe, a database, a server, and other suitable storage media. Storage 1003 may also be referred to as an auxiliary storage device.

[0279] The communication device 1004 is hardware (transmission / reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also called, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to realize at least one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD). For example, the above-mentioned transmission / reception antenna 101 (201), the amplifier unit 102 (202), the transmission / reception unit 103 (203), the transmission path interface 106, etc. may be realized by the communication device 1004.

[0280] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, an LED (Light Emitting Diode) lamp, etc.) that performs output to the outside. The input device 1005 and the output device 1006 may be integrated into one (e.g., a touch panel).

[0281] In addition, 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 may be configured using different buses between each device.

[0282] Furthermore, the radio 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), a field programmable gate array (FPGA), etc., and some or all of the functional blocks may be realized using the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0283] (Modification) In addition, the terms described in this disclosure and the terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of the channel and the symbol may be a signal (signaling). Also, the signal may be a message. The reference signal may be abbreviated as RS (Reference Signal) and may be called a pilot, pilot signal, etc. depending on the applied standard. Also, the component carrier (CC) may be called a cell, frequency carrier, carrier frequency, etc.

[0284] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed 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.

[0285] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel, such as subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, a specific filtering process performed by a transceiver in the frequency domain, or a specific windowing process performed by a transceiver in the time domain.

[0286] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. Also, a slot may be a time unit based on numerology.

[0287] A slot may include multiple minislots. Each minislot may be composed of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may be composed of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0288] A radio frame, a subframe, a slot, a minislot, and a symbol each represent a time unit for transmitting a signal. A radio frame, a subframe, a slot, a minislot, and a symbol may be referred to by other names corresponding thereto, or may be read as interchangeable terms.

[0289] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in the existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit expressing the TTI may be called a slot, a minislot, or the like, instead of a subframe.

[0290] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, a wireless base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. Note that the definition of TTI is not limited to this.

[0291] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) in which a transport block, a code block, a code word, etc. are actually mapped may be shorter than the TTI.

[0292] In addition, when one slot or one minislot is called TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit of scheduling. Also, the number of slots (minislots) constituting the minimum time unit of scheduling may be controlled.

[0293] A TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, etc.

[0294] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0295] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain.

[0296] In addition, an RB may include one or more symbols in the time domain, and may have a length of one slot, one minislot, one subframe, or one TTI. Each of one TTI and one subframe may be composed of one or more resource blocks.

[0297] Note that one or more RBs may be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, or the like.

[0298] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0299] The above-mentioned structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of 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, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0300] In addition, the information, parameters, etc. described in the present disclosure may be represented using absolute values, may be represented using relative values ​​from a predetermined value, or may be represented using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

[0301] The names used for parameters and the like in this disclosure are not limiting in any way. Furthermore, the formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUCCH (Physical Uplink Control Channel), PDCCH (Physical Downlink Control Channel), etc.) and information elements may be identified by any suitable names, and the various names assigned to these various channels and information elements are not limiting in any way.

[0302] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. 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 voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0303] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via a plurality of network nodes.

[0304] Input and output information, signals, etc. may be stored in a specific location (e.g., memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added to. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0305] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed 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), etc.), Medium Access Control (MAC) signaling), other signals, or a combination of these.

[0306] The physical layer signaling may be called L1 / L2 (Layer 1 / Layer 2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. The RRC signaling may be called an RRC message, for example, an RRC connection setup message, an RRC connection reconfiguration message, etc. The MAC signaling may be notified by using a MAC control element (MAC CE (Control Element)), for example.

[0307] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0308] The determination may be made based on a value represented by a single bit (0 or 1), a Boolean value represented as true or false, or by comparing numerical values ​​(e.g., with a predetermined value).

[0309] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0310] Additionally, software, instructions, information, etc. may be transmitted or received over a transmission medium. For example, if the software is transmitted from a website, server, or other remote source using wired and / or wireless technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave, etc.), then these wired and / or wireless technologies are included within the definition of transmission media.

[0311] As used in this disclosure, the terms "system" and "network" may be used interchangeably.

[0312] In this disclosure, terms such as "base station (BS)", "radio base station", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission / reception point", "cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)", etc. may be used interchangeably. A base station may also be referred to by terms such as a macro cell, a small cell, a femto cell, a pico cell, etc.

[0313] A base station can accommodate one or more (e.g., three) cells (also called sectors). When a base station accommodates multiple cells, the entire coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or a base station subsystem that provides communication services in this coverage.

[0314] In this disclosure, the terms "Mobile Station (MS)", "user terminal", "User Equipment (UE)", "terminal", etc. may be used interchangeably.

[0315] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0316] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, etc. At least one of the base station and the mobile station may be a device mounted on a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned moving body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may include a device that does not necessarily move during communication operation.

[0317] Furthermore, the radio base station in the present disclosure may be read as a user terminal. For example, each aspect / embodiment of the present disclosure may be applied to a configuration in which communication between a radio base station and a user terminal is replaced with communication between a plurality of user terminals (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)). In this case, the user terminal 20 may be configured to have the functions of the above-mentioned radio base station 10. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, an uplink channel, a downlink channel, etc. may be read as a side channel.

[0318] Similarly, the user terminal in the present disclosure may be interpreted as a wireless base station. In this case, the wireless base station 10 may be configured to have the functions of the user terminal 20 described above.

[0319] In the present disclosure, an operation performed by a base station may be performed by its upper node in some cases. In a network including one or more network nodes having a base station, it is clear that various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, an MME (Mobility Management Entity) and an S-GW (Serving-Gateway)), or a combination thereof.

[0320] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched according to implementation. In addition, the processing procedures, sequences, flow charts, etc. of each aspect / embodiment described in this disclosure may be reordered unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0321] Each aspect / embodiment described in the present disclosure may be applied to a system using LTE (Long Term Evolution), LTE-A (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), New-RAT (Radio Access Technology), NR (New Radio), NX (New radio access), FX (Future generation radio access), GSM (registered trademark) (Global System for Mobile communications), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), or other suitable wireless communication method, or a next-generation system extended based on these. In addition, multiple systems may be applied in combination (for example, a combination of LTE or LTE-A and 5G).

[0322] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0323] Any reference to an element using a designation such as "first," "second," etc., 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 method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must precede the second element in some way.

[0324] The term "determining" as used in this disclosure may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, database, or another data structure), ascertaining, etc.

[0325] A "determining" may also be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in a memory), etc.

[0326] Also, "determination" may be considered to be "deciding" resolving, selecting, choosing, establishing, comparing, etc. That is, "determination" may be considered to be "deciding" to perform some action.

[0327] Additionally, "judgment (decision)" may be interpreted as "assuming," "expecting," "considering," etc.

[0328] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between the elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."

[0329] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, and the like, as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, and the like, as some non-limiting and non-exhaustive examples.

[0330] In this disclosure, the term "A and B are different" may mean "A and B are different from each other." Terms such as "separate," "coupled," etc. may be interpreted similarly.

[0331] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Further, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0332] In this disclosure, where articles have been added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0333] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented as modified and altered forms without departing from the spirit and scope of the invention defined based on the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the invention according to the present disclosure.

Claims

1. A terminal, A transmitting / receiving unit; A measurement unit connected to the transceiver unit, the measurement unit performing an L1 measurement using a reference signal in a certain frequency band, When the frequency band is included in a first frequency band, the reference signal for the L1 measurement is a synchronization signal block (SSB), and the terminal does not have a simultaneous transmission and reception capability of data of different numerologies and SSB, the transceiver unit does not transmit or receive data of a subcarrier spacing (Sub-Carrier Spacing (SCS)) of the reference signal for the L1 measurement on a symbol of the reference signal for the L1 measurement, which is different from the SCS of the reference signal for the L1 measurement; When the frequency band is included in a first frequency band and the terminal is in a synchronous environment of the first frequency band, the transceiver unit does not transmit or receive data of an SCS different from the SCS of the reference signal for RRM measurement on a symbol of a reference signal for RRM (Radio Resource Management) measurement and on one symbol before and after the symbol, A terminal, wherein when the frequency band is included in a second frequency band higher than the first frequency band, and the reference signal for the L1 measurement is a reference signal that is quasi-collocated with a reference signal in an active Transmission Configuration Indicator state (TCI-state), the transceiver unit is capable of transmitting and receiving data on symbols of the reference signal for the L1 measurement.

2. The terminal according to claim 1 , wherein when inter-band carrier aggregation is configured in the first frequency band and the frequency band is included in the first frequency band, there is no scheduling restriction on transmission and reception during the L1 measurement.

3. The terminal described in claim 1, wherein when inter-band carrier aggregation is configured in the first frequency band and the second frequency band, there are no scheduling restrictions on transmission and reception during the L1 measurement.

4. A terminal as described in claim 1, wherein when the frequency band is included in the second frequency band and the reference signal for the L1 measurement is not a quasi-collocated reference signal with a reference signal of the active TCI-state, the transceiver unit does not transmit or receive data on symbols of the reference signal for the L1 measurement.

5. A wireless communication method in a terminal, comprising: performing an L1 measurement using a reference signal in a frequency band; When the frequency band is included in a first frequency band, the reference signal for the L1 measurement is a Synchronization Signal Block (SSB), and the terminal does not have the capability of simultaneously transmitting and receiving data of different numerologies and SSB, not transmitting or receiving data of a Sub-Carrier Spacing (SCS) different from the SCS of the reference signal for the L1 measurement on a symbol of the reference signal for the L1 measurement; When the frequency band is included in a first frequency band and the terminal is in a synchronous environment of the first frequency band, neither transmitting nor receiving data of an SCS different from an SCS of the reference signal for RRM measurement on a symbol of a reference signal for RRM measurement and on one symbol before and after the symbol; and when the frequency band is included in a second frequency band higher than the first frequency band and the reference signal for the L1 measurement is a reference signal that is quasi-collocated with a reference signal in an active Transmission Configuration Indicator state (TCI-state), enabling data transmission and reception on symbols of the reference signal for the L1 measurement.

6. A control unit, a transceiver connected to the control unit, the transceiver communicating with a terminal that performs L1 measurements using a reference signal in a certain frequency band; When the frequency band is included in a first frequency band, the reference signal for the L1 measurement is a Synchronization Signal Block (SSB), and the terminal does not have the capability of simultaneously transmitting and receiving data of different numerologies and SSB, the transceiver unit does not transmit or receive data for the terminal of a subcarrier spacing (SCS) different from the subcarrier spacing (SCS) of the reference signal for the L1 measurement on a symbol of the reference signal for the L1 measurement, When the frequency band is included in a first frequency band and the terminal is in a synchronous environment of the first frequency band, the transceiver unit does not transmit or receive data for the terminal having an SCS different from the SCS of the reference signal for the RRM measurement on a symbol of a reference signal for RRM (Radio Resource Management) measurement and one symbol before and after the symbol, A base station, wherein when the frequency band is included in a second frequency band higher than the first frequency band and the reference signal for the L1 measurement is a reference signal that is quasi-collocated with a reference signal in an active Transmission Configuration Indicator state (TCI-state), the transceiver unit is capable of transmitting and receiving data for the terminal on symbols of the reference signal for the L1 measurement.

7. A system having a terminal and a base station, The terminal includes: A transmitting / receiving unit; A measurement unit connected to the transceiver unit, the measurement unit performing an L1 measurement using a reference signal in a certain frequency band, When the frequency band is included in a first frequency band, the reference signal for the L1 measurement is a Synchronization Signal Block (SSB), and the terminal does not have the capability of simultaneously transmitting and receiving data of different numerologies and SSB, the transceiver unit does not transmit or receive data of a subcarrier spacing (Sub-Carrier Spacing (SCS)) of the reference signal for the L1 measurement on a symbol of the reference signal for the L1 measurement, which is different from the SCS of the reference signal for the L1 measurement; When the frequency band is included in a first frequency band and the terminal is in a synchronous environment of the first frequency band, the transceiver unit does not transmit or receive data of an SCS different from the SCS of the reference signal for RRM measurement on a symbol of a reference signal for RRM (Radio Resource Management) measurement and on one symbol before and after the symbol, When the frequency band is included in a second frequency band higher than the first frequency band, and the reference signal for the L1 measurement is a reference signal that is quasi-collocated with a reference signal in an active Transmission Configuration Indicator state (TCI-state), the transceiver unit is capable of transmitting and receiving data on symbols of the reference signal for the L1 measurement; The base station, A transceiver for communicating with the terminal.

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