Terminal and communication method

Abstract

A terminal according to the present invention comprises: a communication unit that receives or transmits a signal; and a control unit that performs measurement during a measurement period. The control unit determines whether to activate the skip of the measurement on the basis of a field of downlink control information received by the communication unit.

Description

Terminal and communication method

[0001] The present disclosure relates to a terminal and a communication method.

[0002] The 3rd Generation Partnership Project (3GPP (registered trademark)) is specifying the 5th generation mobile communication system (5G, also known as New Radio (NR) or Next Generation (NG)), and is also specifying the next generation, called Beyond 5G, 5G Evolution, or 6G.

[0003] For 5G, technologies that satisfy the requirements such as a large-capacity system, high-speed data transmission speed, low latency, simultaneous connection of a large number of terminals, low cost, and power saving are being considered (for example, Non-Patent Document 1).

[0004] The expansion of mobile communication systems as described above is expected to lead to the use and spread of extended reality (XR), such as virtual reality (VR), augmented reality (AR), and mixed reality (MR), which enable the combination of the real world and the virtual world (virtual content). 3GPP is currently discussing XR expansion in preparation for Release 19 (see, for example, Non-Patent Document 2).

[0005] In the context of XR extensions, for example, extensions regarding Measurement Gap (MG) and scheduling restrictions have been widely discussed.

[0006] For example, it may be within the scope of future standards to specify extensions to the scheduling restrictions for inter-frequency RRM measurements in FR1 and FR2 with measurement gaps and intra-frequency RRM measurements in FR2 without measurement gaps to reduce the impact on capacity and on individual terminals.

[0007] 3GPP TS 38.300 V17.6.0 (2023-09)“Moderator's summary for REL-19 RAN2 topic Enhancements for XR”, RP-232619, 3GPP TSG-RAN Meeting #101, 3GPP, September 2023

[0008] In current wireless communication systems, measurements using synchronization signal blocks (SSBs) (SSB-based measurements) are used.

[0009] For SSB measurements, a measurement timing configuration (SMTC: SSB-based Measurement Timing Configuration) is notified to a terminal, and the terminal performs measurements based on the signal to be measured in the configured SMTC window. Also, for SSB measurements, a measurement gap configuration can be notified to the terminal for switching the used frequency (RF: Radio Frequency), etc.

[0010] Due to the periodicity of XR traffic, if the SMTC window or measurement gap overlaps with the transmission and reception of signals related to XR traffic, the signals cannot be scheduled, which can lead to problems due to scheduling restrictions associated with measurements, such as capacity loss.

[0011] In addition, in current wireless communication systems, other measurements such as measurements using a Channel State Information Reference Signal (CSI-RS) (CSI-RS-based measurement) are also used, and the above-mentioned problems may also occur in various measurements. Furthermore, the above-mentioned problems may also occur in transmission and reception of signals other than signals related to XR traffic.

[0012] One aspect of the present disclosure provides a terminal and a communication method that can reduce the impact caused by scheduling restrictions on measurements.

[0013] A terminal according to one aspect of the present disclosure includes a communication unit that receives or transmits signals and a control unit that performs measurements during a measurement period, and the control unit determines whether to activate skipping of the measurement based on a field of downlink control information received by the communication unit.

[0014] 1 is a diagram illustrating an example of a wireless communication system according to an embodiment of the present disclosure; FIG. 2 is a diagram illustrating an example of a frequency range used in a wireless communication system according to an embodiment of the present disclosure; FIG. 3 is a diagram illustrating an example of a configuration of a radio frame, a subframe, and a slot used in a wireless communication system according to an embodiment of the present disclosure; FIG. 4 is a diagram illustrating an example of activation of skipping of measurement gap opportunities by DCI according to an embodiment of the present disclosure; FIG. 5 is a block diagram illustrating an example of a configuration of a base station according to an embodiment of the present disclosure; FIG. 6 is a block diagram illustrating an example of a configuration of a terminal according to an embodiment of the present disclosure; FIG. 7 is a diagram illustrating an example of a hardware configuration of a base station and a terminal according to an embodiment of the present disclosure; and FIG. 8 is a diagram illustrating an example of a configuration of a vehicle according to an embodiment of the present disclosure.

[0015] Hereinafter, an embodiment according to one aspect of the present disclosure will be described with reference to the drawings.

[0016] 1 is a diagram illustrating an example of a wireless communication system 10 according to an embodiment of the present disclosure. The wireless communication system 10 is a wireless communication system conforming to 5G NR, and includes a Next Generation-Radio Access Network 20 (hereinafter, NG-RAN 20) and a terminal 200 (hereinafter, also referred to as UE (User Equipment) 200).

[0017] The wireless communication system 10 may be a wireless communication system conforming to a system called Beyond 5G, 5G Evolution, or 6G.

[0018] The NG-RAN 20 includes a base station 100A (hereinafter also referred to as gNB 100A) and a base station 100B (hereinafter also referred to as gNB 100B). When there is no need to distinguish between the gNB 100A, the gNB 100B, etc., they are collectively referred to as gNB or base station 100. Furthermore, the number of gNBs and UEs is not limited to the example shown in FIG. 1.

[0019] The NG-RAN 20 actually includes multiple NG-RAN nodes, specifically, gNBs (or ng-eNBs), and is connected to a 5G-compliant core network (5GC, not shown). The NG-RAN 20 and 5GC may simply be referred to as "networks." In the following, the term "gNB" may be replaced with "network (NW)."

[0020] As an example, the gNB 100A and the gNB 100B are base stations conforming to 5G, and perform 5G wireless communication with the UE 200. The gNB 100A, the gNB 100B, and the UE 200 may support MIMO (Multiple-Input Multiple-Output), which generates a more directional beam BM by controlling radio signals transmitted from multiple antenna elements, carrier aggregation (CA), which uses a bundle of multiple component carriers (CC), and dual connectivity (DC), which performs communication between the UE and each of two NG-RAN nodes.

[0021] The wireless communication system 10 may also support multiple frequency ranges (FR). Fig. 2 is a diagram showing an example of FRs used in the wireless communication system 10. As shown in Fig. 2, the wireless communication system 10 may support FR1 and FR2. The frequency bands of each FR are, for example, as follows: FR1: 410 MHz to 7.125 GHz FR2: 24.25 GHz to 52.6 GHz

[0022] FR1 may use a sub-carrier spacing (SCS) of 15 kHz, 30 kHz, or 60 kHz, and a bandwidth (BW) of 5 to 100 MHz. FR2 is a higher frequency than FR1, and may use an SCS of 60 kHz or 120 kHz (including 240 kHz), and a bandwidth (BW) of 50 to 400 MHz.

[0023] Note that SCS may be interpreted as numerology, which is defined in 3GPP TS 38.300 and corresponds to one subcarrier spacing in the frequency domain.

[0024] Furthermore, the wireless communication system 10 may support a frequency band higher than the FR2 frequency band. Specifically, the wireless communication system 10 may support a frequency band exceeding 52.6 GHz up to 114.25 GHz. For convenience, such a high frequency band may be referred to as "FR2x." When using a frequency band exceeding 52.6 GHz, CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) / DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing) with a larger SCS may be applied.

[0025] 3 is a diagram showing an example of the configuration of a radio frame (system frame), subframe, and slot used in the radio communication system 10. As shown in FIG. 3, one slot is composed of 14 symbols, and the larger (wider) the SCS, the shorter the symbol period (and slot period). However, the SCS is not limited to the interval (frequency) shown in FIG. 3. For example, 480 kHz, 960 kHz, etc. may be used as the SCS.

[0026] Furthermore, the number of symbols constituting one slot does not necessarily have to be 14 (for example, it may be 28 or 56 symbols, etc.) Furthermore, the number of slots per subframe may differ depending on the SCS.

[0027] 3 may be called a time domain, a symbol period, a symbol time, etc. The frequency direction may be called a frequency domain, a resource block, a subcarrier, a bandwidth part (BWP), etc.

[0028] The gNB100 transmits control information, setting information, etc. to the UE200 as a downlink (DL) signal.

[0029] Furthermore, for example, gNB100 receives control information, data signals, information regarding the processing capabilities of UE200 (terminal capabilities (information); for example, UE capability), etc. from UE200 as uplink (UL) signals.

[0030] Channels used for transmitting DL signals include, for example, data channels and control channels. For example, the data channel may include a physical downlink shared channel (PDSCH), and the control channel may include a physical downlink control channel (PDCCH). For example, the gNB 100 transmits control information to the UE 200 using the PDCCH, and transmits DL data signals using the PDSCH. Note that the PDSCH is an example of a downlink shared channel, and the PDCCH is an example of a downlink control channel. Note that the PDCCH may be interpreted as downlink control information (DCI), control information, etc. transmitted in the PDCCH.

[0031] The reference signal included in the DL signal may include, for example, at least one of a DMRS (Demodulation Reference Signal), a PTRS (Phase Tracking Reference Signal), a CSI-RS (Channel State Information - Reference Signal), an SRS (Sounding Reference Signal), and a PRS (Positioning Reference Signal) for position information. For example, reference signals such as the DMRS and PTRS are used to demodulate the DL data signal and are transmitted using the PDSCH.

[0032] The UE 200 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or an M2M (Machine-to-Machine) communication module.

[0033] UE200 receives control signals or data signals from gNB100 in DL and transmits control signals or data signals to gNB100 in UL, thereby utilizing various communication services provided by wireless communication system 10. UE200 also receives various reference signals transmitted from gNB100 and performs measurement of propagation path quality based on the reception results of the reference signals.

[0034] For example, UE200 receives control information, configuration information, etc. from gNB100 as a DL signal.

[0035] Also, for example, UE200 transmits control information, data signals, terminal capability information of UE200, etc. to gNB100 as UL signals.

[0036] Channels used for transmitting UL signals include, for example, data channels and control channels. For example, the data channel may include a Physical Uplink Shared Channel (PUSCH), and the control channel may include a Physical Uplink Control Channel (PUCCH). For example, the UE 200 transmits control information using the PUCCH and transmits UL data signals using the PUSCH. Note that the PUSCH is an example of an uplink shared channel, and the PUCCH is an example of an uplink control channel. Note that the PUSCH or the PUCCH may be interpreted as uplink control information (UCI), control information, etc. transmitted in the PUSCH or the PUCCH.

[0037] The reference signal included in the UL signal may include, for example, at least one of a DMRS, a PTRS, a CSI-RS, an SRSRS, and a PRS for location information. For example, the reference signal such as the DMRS or the PTRS is used for demodulating the UL data signal and is transmitted using the PUSCH.

[0038] <Current status of discussions on XR> XR presents attractive use cases for future wireless communication systems. However, XR also poses challenges that need to be considered and addressed. For example, in 3GPP, XR extensions are being discussed for Release 19 (see, for example, Non-Patent Document 2), and extensions related to measurement gaps and scheduling restrictions are being widely discussed.

[0039] <About SSB and SSB Measurement> Some signals and / or channels transmitted from a base station to a terminal are periodically transmitted. Examples of such signals and / or channels include synchronization signal blocks (SSBs).

[0040] The SSB is used by a terminal to measure, for example, received power (e.g., SS-RSRP (Synchronization Signal Reference Signal Received Power)) and received quality (e.g., SS-RSRQ (Synchronization Signal Reference Signal Received Quality)) (SSB measurement). This measurement is an example of RRM (Radio Resource Management) measurement.

[0041] For SSB measurements, a measurement timing configuration (SMTC) is notified to the terminal. The SMTC may include the length, period, timing offset, etc. of the SSB measurement period (which may also be called an SMTC window, measurement timing, etc.). The terminal performs measurements based on the signal to be measured within the configured SMTC window.

[0042] Furthermore, for SSB measurements, a measurement gap setting may be notified to the terminal due to switching of the used frequency (RF: Radio Frequency). A measurement gap is an extended period for measurements in which an additional period may be added before and after the SMTC window. The measurement gap setting may also include a length, a period, etc.

[0043] Examples of RRM measurements also include measurements based on CSI-RS (CSI-RS measurements).

[0044] In NR, the following RRM measurements are used, including SSB measurements and CSI-RS measurements, with or without measurement gaps: (1) Intra-frequency measurements (2) Inter-frequency measurements (3) Inter-frequency measurements (4)

[0045] The terminal can perform the above-mentioned RRM measurements and transmit / receive signals using at least one frequency band (carrier frequency) of the first frequency band (FR1) and the second frequency band (FR2).

[0046] <Scheduling Restrictions for RRM Measurements> Scheduling restrictions (terminal operation restrictions) for intra-frequency SSB measurements without measurement gaps, with NCSG (Network Configured Small Gap), and with measurement gaps are described in the current standard in the following sections: Intra-frequency SSB measurements without measurement gaps: TS 38.133 clause 9.2.5.3 (In short, scheduling restrictions are imposed on SSB symbols measured within an SMTC window or on all symbols within an SMTC window, if the conditions are met.) Intra-frequency SSB measurements with NCSG: TS 38.133 clause 9.2.5.3 Intra-frequency SSB measurements with measurement gaps: TS 38.133 clause 9.1.2

[0047] Regarding inter-frequency SSB measurements, the scheduling restrictions (terminal operation restrictions) for inter-frequency SSB measurements without measurement gaps, inter-frequency SSB measurements with NCSG, and inter-frequency SSB measurements with measurement gaps are described in the following sections of the current standard. Inter-frequency SSB measurements without measurement gaps: TS 38.133 clause 9.3.5.3 (briefly, scheduling restrictions are imposed on the SSB symbols measured within the SMTC window or on all symbols within the SMTC window, if the condition is met). Inter-frequency SSB measurements with NCSG: TS 38.133 clause 9.2.10.3 (briefly, scheduling restrictions are imposed on the union of SSB symbols measured within the SMTC window for all Measurement Occasions (MOs) or on the union of all symbols within the SMTC window for all MOs, if the condition is met). Inter-frequency SSB measurements with measurement gaps: TS 38.133 clause 9.1.2

[0048] Regarding intra-frequency CSI-RS measurements, the scheduling restrictions (terminal operation restrictions) for intra-frequency CSI-RS measurements without measurement gaps are described in the current standard in the following section: Intra-frequency CSI-RS measurements without measurement gaps: TS 38.133 clause 9.10.2.6 (in brief, scheduling restrictions are imposed on configured CSI-RS symbols if the conditions are met).

[0049] Regarding inter-frequency CSI-RS measurements, the scheduling restrictions (terminal operation restrictions) for inter-frequency CSI-RS measurements with measurement gaps are described in the following section of the current standard: Inter-frequency CSI-RS measurements with measurement gaps: TS 38.133 clause 9.1.2

[0050] Due to the periodicity of XR traffic, if the SMTC window or measurement gap overlaps with the transmission and reception of signals related to XR traffic, the signals cannot be scheduled, which can lead to problems due to scheduling restrictions associated with measurements, such as capacity loss.

[0051] Incidentally, the terminal may also perform measurements for radio link monitoring, measurements for L1-RSRP, measurements for beam obstruction detection, and the like.

[0052] The above-mentioned problems may occur in CSI-RS measurements and various other measurements including these measurements. The above-mentioned problems may also occur in transmission and reception of signals other than signals related to XR traffic.

[0053] Currently, extensions to scheduling constraints are being considered, but specific operations related to control to realize such extensions have not been fully considered.

[0054] Therefore, the following describes a proposal for reducing the influence caused by the scheduling restrictions on measurements (a proposal for relaxing the scheduling restrictions on measurements).

[0055] More specifically, a proposal is described for supporting dynamic instructions that activate skipping (or disabling) of certain measurement gaps / RRM measurements / SMTC windows until the skipping (or disabling) of other dynamic instructions is deactivated.

[0056] The following proposal will be described assuming that the measurement gap is periodic. For example, the measurement gap (configuration) may be configured by an existing measurement gap configuration information element (e.g., MeasGapConfig IE), which is an RRC parameter, or a (new) information element similar to the existing information element, and the period of the measurement gap may be configured in such an information element.

[0057] The following suggestions are also applicable to intra-frequency SSB and / or CSI-RS measurements and / or inter-frequency SSB and / or CSI-RS measurements with measurement gaps / RRM measurements / SMTC windows.

[0058] Also, in the following proposal, the DCI / MAC CE instructs the UE 200 to activate measurement gaps / RRM measurements / SMTC window skipping.

[0059] For example, if UE200 is instructed by gNB100 via DCI / MAC CE to activate skipping of measurement gaps / RRM measurements / SMTC windows, UE200 may receive / transmit DL / UL channels / signals without performing RRM measurements (and / or Positioning Reference Signal (PRS) measurements) in the measurement gaps / RRM measurements / SMTC windows.

[0060] The items described in the following proposals may be combined as appropriate as long as no contradictions arise.

[0061] In this application, the notation " / " may mean "and / or" unless otherwise specified.

[0062] In addition, in this application, the expression "not receiving / transmitting" may be interpreted as "not assuming reception / transmission," "reception / transmission is disabled," "not performing reception / transmission," "restricting reception / transmission," "assuming reception / transmission is not possible," etc.

[0063] Furthermore, in this application, the expression "deactivate" may be interpreted as "disable", "turn off", "put into an inactive (or disabled) state (disabled state, off state)", etc., and "enable" may be interpreted as "enable", "turn on", "put into an active (or disabled) state (disabled state, off state)", etc.

[0064] In addition, in this application, the expression "notification" may be read as the expression "instruction."

[0065] In addition, in this application, signals such as SSB and CSI-RS used to measure received power, received quality, etc. may be referred to as measurement signals, measurement signals, etc.

[0066] In addition, in this application, "skipping ~" may be interpreted as "not performing measurements (e.g., RRM measurements) on ~", "assuming that scheduling restrictions do not apply on ~ (do not assume that scheduling restrictions apply)", etc.

[0067] In addition, in this application, "measurement gap opportunity," "RRM measurement opportunity," and "SMTC window opportunity" may be abbreviated to "measurement gap," "RRM measurement," and "SMTC window," respectively. Furthermore, "measurement gap / RRM measurement / SMTC window" may be abbreviated to "measurement gap, etc."

[0068] In this application, a measurement gap or the like (opportunity) may also be referred to as an extended period or interval for measurement.

[0069] In addition, in this application, "activating a skip of a measurement gap or the like" may be abbreviated to "skip activation." Similarly, "deactivating a skip of a measurement gap or the like" may be abbreviated to "skip deactivation."

[0070] In addition, in this application, a DCI / MAC CE that instructs skip activation may be referred to as an "activation DCI / MAC CE," and a DCI / MAC CE that instructs skip deactivation may be referred to as a "deactivation DCI / MAC CE."

[0071] In addition, in this application, "DCI / MAC CE" and "DCI, etc." may be abbreviated.

[0072] <Proposal> The following describes a proposal for supporting a dynamic indication of skip activation by DCI etc. Note that the dynamic indication of skip activation may be referred to as information indicating activation of not performing measurements (for part of the periodic extended period for measurements), etc.

[0073] The UE may be instructed to perform skip activation by receiving a dynamic instruction by DCI or the like from the gNB, and may decide whether to perform skip activation based on the DCI or the like. The dynamic instruction of skip activation by DCI or the like may follow Proposal 1 to Proposal 3 below.

[0074] <Proposal 1: UE Operation> Proposal 1 proposes the operation of a UE when receiving an activation DCI, etc. When receiving an activation DCI, etc., the UE may perform one of the following optional operations.

[0075] (Option A) The UE may skip all measurement gaps, etc. that start after one of the following times, regardless of the measurement gap type / measurement gap ID / serving cell: - K_offset slots / symbols / ms have elapsed since the reception of an activation DCI, etc. - K_offset slots / symbols / ms have elapsed since the transmission of a HARQ-ACK for an activation DCI, etc. - K_offset slots / symbols / ms have elapsed since the transmission of a HARQ-ACK for a PDSCH scheduled by an activation DCI - K_offset slots / symbols / ms have elapsed since the reception / transmission of a PDSCH / PUSCH scheduled by an activation DCI - K_offset slots / symbols / ms have elapsed since the reception / transmission of a CSI-RS / SRS triggered by an activation DCI

[0076] The value of K_offset may be set by RRC, may be defined by a specification, or may be notified by an activation DCI, etc.

[0077] (Variations of Option A) The value of K_offset may vary from SCS to SCS and may depend on the UE capabilities.

[0078] The value of K_offset may be determined based on the SCS of the serving cell of the DCI / MAC CE, or based on the minimum value between the SCS of the serving cell of the DCI / MAC CE and the SCS of the serving cell of the scheduled PDSCH / PUSCH, or based on the minimum value between the SCSs of configured serving cells (within the same frequency range / band as the cell of the DCI / MAC CE).

[0079] The value of K_offset may be counted based on any of the following SCSs: the SCS of the serving cell of the activation DCI / MAC CE, the SCS of the serving cell of the PDSCH / PUSCH scheduled by the activation DCI (if any), or the explicitly configured SCS.

[0080] (Option B) The UE may skip measurement gaps of a specific measurement gap type (e.g., per UE, per FR1 / FR2), measurement gaps with a specific measurement gap ID, RRM measurements configured for a specific cell, or measurement gaps with an SMTC window that start after any of the following: - K_offset slots / symbols / ms have elapsed since receiving an activation DCI, etc. - K_offset slots / symbols / ms have elapsed since transmitting a HARQ-ACK for an activation DCI, etc. - K_offset slots / symbols / ms have elapsed since transmitting a HARQ-ACK for a PDSCH scheduled by an activation DCI - K_offset slots / symbols / ms have elapsed since receiving / transmitting a PDSCH / PUSCH scheduled by an activation DCI - K_offset slots / symbols / ms have elapsed since receiving / transmitting a CSI-RS / SRS triggered by an activation DCI

[0081] The method described in Option A can be used to determine K_offset slots / symbols / ms.

[0082] The specific measurement gap type (e.g. per UE, FR1 / FR2) may be configured by the RRC, may be configured for the corresponding frequency range of the serving cell of the DCI, may be predefined by the specification, or may be indicated by the activation DCI / MAC CE.

[0083] The specific measurement gap ID may be configured by the RRC or by the activation DCI / MAC CE.

[0084] The particular serving cell may be the serving cell that receives the DCI, may be configured by the RRC, or may be indicated by an activation DCI / MAC CE (e.g., reuse of the CIF field).

[0085] (Option C) The UE may periodically skip measurement gaps etc. based on a bitmap indicating the skip pattern.

[0086] The skip pattern bitmap indicates "skip" or "don't skip" for each of a series of measurement gaps within a predetermined period.

[0087] The bitmap indicates, for each bit, whether to "skip" or "not skip" the corresponding measurement gap, etc. For example, a bit value "0" may indicate "not skip (not skipped)" and a bit value "1" may indicate "skip (skipped)," or alternatively, a bit value "1" may indicate "not skip (not skipped)" and a bit value "0" may indicate "skip (skipped)."

[0088] For measurement gaps etc. that are signaled as "skipped", the UE does not perform RRM measurements during said measurement gaps etc., the scheduling restrictions defined in the current standard do not apply, and the UE may receive / transmit DL / UL channels / signals. On the other hand, for measurement gap occasions that are signaled as "not skipped", the UE must perform RRM measurements during said measurement gap occasions, and the scheduling restrictions defined in the current standard apply during non-skipped measurement gap occasions.

[0089] The skip pattern may be configured by the RRC or may be indicated by the activation DCI / MAC CE.

[0090] (Example 1) The bitmap is set or indicated by the activation DCI / MAC CE with a bit indicating "skip" or "don't skip" for each opportunity.

[0091] (Example 2) Multiple skip patterns (each skip pattern corresponding to a bitmap as in Example 1) may be configured by the RRC or defined by a specification. The pattern index may be configured or indicated by the activation DCI / MAC CE.

[0092] The skip pattern bitmap may be mapped to all measurement gaps within a period, etc., or may be mapped to measurement gap opportunities of a specific measurement gap type (e.g. per UE, FR1 / FR2) within a period, or may be mapped to measurement gap opportunities with a specific measurement gap ID within a period, or may be mapped to RRM measurement / SMTC windows configured for a specific cell within a period.

[0093] The specific measurement gap type (e.g. per UE, FR1 / FR2) may be configured by the RRC, may be configured for the corresponding frequency range of the serving cell of the DCI, may be predefined by the specification, or may be indicated by the activation DCI / MAC CE.

[0094] The specific measurement gap ID may be configured by the RRC or may be indicated by the activation DCI / MAC CE.

[0095] The particular serving cell may be the serving cell that receives the DCI, may be configured by the RRC, or may be indicated by an activation DCI / MAC CE (e.g., reuse of the CIF field).

[0096] (Time for applying skip pattern) The skip pattern may be applied after any of the following timings: - The timing when K_offset slots / symbols / ms have elapsed since an activation DCI or the like was received - The timing when K_offset slots / symbols / ms have elapsed since an HARQ-ACK for an activation DCI or the like was transmitted - The timing when K_offset slots / symbols / ms have elapsed since an HARQ-ACK for a PDSCH scheduled by an activation DCI was transmitted - The timing when K_offset slots / symbols / ms have elapsed since a PDSCH / PUSCH scheduled by an activation DCI was received / transmitted - The timing when K_offset slots / symbols / ms have elapsed since a CSI-RS / SRS triggered by an activation DCI was received / transmitted

[0097] The method described in Option A above can be used to determine K_offset slots / symbols / ms.

[0098] FIG. 4 illustrates an example of activation of measurement gap opportunity skipping according to Option C. FIG. 4 illustrates an example in which the activation DCI indicates a skip pattern for N consecutive measurement gap opportunities (N=5 in the example of FIG. 4 ) using a bitmap. In this example, the bitmap (skip pattern) is “11000” (where “0” indicates not skipping and “1” indicates skipping), and the first and second measurement gap opportunities corresponding to each skip pattern are skipped. Therefore, upon receiving the activation DCI, the UE activates skipping of the first and second measurement gap opportunities corresponding to each skip pattern, and does not perform RRM measurements during these measurement gap opportunities, but receives / transmits DL / UL channels / signals. Furthermore, upon receiving a deactivation DCI after receiving the activation DCI, the UE stops activating measurement gap opportunity skipping and performs RRM measurements during each subsequent measurement gap opportunity.

[0099] (Variation of Option C) When the UE is in a skip activation state due to the reception of an activation DCI / MAC CE, the UE may not expect to receive another activation DCI / MAC CE indicating skip activation.

[0100] If the UE is in a skip activation state due to the reception of an activation DCI / MAC CE and subsequently receives another activation DCI / MAC CE indicating skip activation, the UE may take one of the following alternative (Alt) actions:

[0101] (Alt-a) The UE may continuously skip measurement gaps etc., i.e. the UE may ignore subsequently received activation DCI / MAC CEs.

[0102] (Alt-b) The skip operation may be overridden by a later received activation DCI / MAC CE, and the UE may apply the indication in the later received activation DCI / MAC CE.

[0103] For example, if an earlier received activation DCI / MAC CE indicates skipping all measurement gaps, etc., and a later received activation DCI / MAC CE indicates skipping measurement gaps (opportunities) for FR1, the UE may apply the instruction in the later received activation DCI / MAC CE. In this case, the UE may stop applying the instruction in the earlier received activation DCI / MAC CE.

[0104] <Proposal 2: DCI Details> Proposal 2 proposes details of activation DCI when dynamic instruction of skip activation is by DCI.

[0105] <Proposal 2-1: DCI Format> A new DCI format or an existing DCI format may be used as the activation DCI.

[0106] (Option 2-1-1: New DCI Format) A new DCI format or an existing DCI format including a CRC scrambled with a new RNTI may be used as the activation DCI.

[0107] (Option 2-1-2: Existing DCI Format) As the activation DCI, an existing DCI format including a CRC scrambled by an existing RNTI may be used.

[0108] <Proposal 2-2: Contents of DCI fields> The activation DCI may include one or more of the following fields: - Field 1: Skip activation flag (1 bit) indicating whether skip activation is performed. The skip activation flag in field 1 may, for example, indicate that "skip activation" is performed when it is a specific value (e.g., "0" (or "1")), and indicate that "skip activation" is not performed when it is another value (e.g., "1" (or "0")). - Field 2: Indication of activated skip pattern (e.g., bitmap or bitmap index described in option C of proposal 1). - Field 3: Indication of specific measurement gap type (e.g., per UE, FR1 / FR2) / specific measurement gap ID / specific cell (e.g., those described in options B / C of proposal 1).

[0109] The above fields 1, 2, and 3 can be arbitrarily combined. For example, the activation DCI may include only field 1, field 2, or field 3, or may include (field 1 + field 2), or may include (field 1 + field 3), or may include (field 2 + field 3), or may include (field 1 + field 2 + field 3).

[0110] <Proposal 2-3: DCI fields indicating the contents of Proposal 2-2> (In the case of a new DCI format) If the activation DCI is in a new DCI format or in an existing field including a CRC scrambled by a new RNTI, the DCI format (including the CRC scrambled by the new RNTI) may include field 1 / field 2 / field 3 of Proposal 2-2.

[0111] (For Existing DCI Format) If the activation DCI is in an existing DCI format with a CRC scrambled by an existing RNTI, it may signal that skipping of measurement gaps, etc. will be activated using one of the following options:

[0112] (Option 2-3-1: New Field) A new field may indicate whether or not to perform skip activation.

[0113] (Examples of New Fields) Specific examples of new fields include the following: (Example 1): A new field in a non-fallback DL grant DCI (e.g., DCI1_1 / 1_2 / 1_3) with (or without) PDSCH scheduling (Example 2): A new field in a non-fallback UL grant DCI (e.g., DCI0_1 / 0_2 / 0_3) with (or without) PUSCH scheduling (Example 3): A new field in DCI format 2_1 with (or without) DL preemption indication (Example 4): A new field in DCI format 2_4 with (or without) UL cancellation indication

[0114] Whether the new fields, Field 1 / Field 2 / Field 3, of Proposal 2-2 are present in the DCI format may be configured by RRC.

[0115] (Variation of Option 2-3-1) Whether the new field 2 / field 3 of Proposal 2-2 exists in the DCI format may depend on the indication of field 1.

[0116] For example, if field 1 (i.e., the "skip activation flag") indicates that "skip activation" is to be performed (e.g., value "0" (or "1")) (and RRC is configured to enable the presence of field 2 / field 3), the UE determines that field 2 / field 3 are present in the activation DCI. On the other hand, if field 1 indicates that "skip activation" is not to be performed (e.g., value "1" (or "0")), the UE determines that field 2 / field 3 are not present in the activation DCI.

[0117] (Option 2-3-2: Existing Field) Reinterpretation of a particular existing field may indicate whether or not to perform skip activation.

[0118] (Examples of Existing Fields) Specific examples of existing fields include the following: (Example 1): Existing fields in non-fallback DL grant DCIs (e.g., DCI1_1 / 1_2 / 1_3) without PDSCH scheduling (Example 2): Existing fields in non-fallback UL grant DCIs (e.g., DCI0_1 / 0_2 / 0_3) without PUSCH scheduling (Example 3): Existing fields in DCI2_1 without DL preemption indication (Example 4): Existing fields in DCI2_4 without UL cancellation indication

[0119] Whether or not the DCI format can be reinterpreted to indicate skip activation may be enabled / configured by RRC.

[0120] If enabled / configured, the decision to reinterpret these fields or leave the DCI with the existing interpretation may be based on the value of the particular DCI field.

[0121] For example, if the DCI indicates specific values ​​for specific DCI fields (e.g., HPN all "0", FDRA all "0", TDRA all "0", MCS all "0", etc.), the UE reinterprets the existing DCI fields as an indication of skip activation.

[0122] (Variation of Option 2-3-2) Whether or not to reinterpret existing fields in Field 2 / Field 3 of Proposal 2-2 may depend on the instruction in Field 1.

[0123] For example, if field 1 (i.e., "skip activation flag") indicates that "skip activation" is to be performed (e.g., value "0" (or "1")), the UE reinterprets certain existing fields in field 2 / field 3. On the other hand, if field 1 indicates that "skip activation" is not to be performed (e.g., value "1" (or "0")), the UE does not reinterpret existing fields in field 2 / field 3.

[0124] Whether or not the DCI format can be reinterpreted to indicate skip activation may be enabled / configured by RRC.

[0125] If enabled / configured, the decision to reinterpret these fields or leave the DCI with the existing interpretation may be based on the value of the particular DCI field.

[0126] For example, if the DCI indicates specific values ​​for specific DCI fields (e.g., HPN all "0", FDRA all "0", TDRA all "0", MCS all "0", etc.), the UE reinterprets the existing DCI fields as an indication of skip activation.

[0127] (Option 2-3-3: Combination of Option 2-1 and Option 2-2) It is also possible to combine a new field of 1-bit flag with a reinterpretation of an existing field to indicate skip activation.

[0128] In this case, a new field is introduced in field 1 of proposal 2-2 (i.e., "skip activation flag").

[0129] For example, if field 1 (i.e., "skip activation flag") indicates that "skip activation" is to be performed (e.g., value "0" (or "1")), the UE reinterprets the existing fields for field 2 / field 3. On the other hand, if field 1 indicates that "skip activation" is not to be performed (e.g., value "1" (or "0")), the UE interprets the DCI as legacy.

[0130] Whether field 1 (i.e., "skip activation flag") is present in the DCI format may be configured by the RRC. <Proposal 2-4: Processing Timeline> The timeline for skip activation is shown below.

[0131] The processing time of an Activation DCI indicating skip activation is defined as the minimum time required to process a skip activation indication. The processing time of a skip activation indication, T_proc_skip, may be defined by the specification. The value of T_proc_skip may also vary from SCS to SCS and may depend on the UE capabilities.

[0132] (Variation of Proposal 2-4) The specification defines a new table containing the values ​​of T_proc_skip for various SCSs.

[0133] The value of T_proc_skip is the PDSCH processing procedure time T as per TS 38.214, section 5.3. proc, 1 It may be smaller or larger.

[0134] The value of T_proc_skip is the PUSCH preparation procedure time T as per TS 38.214, section 6.4. proc, 2 It may be smaller or larger.

[0135] The value of T_proc_skip is T proc, 1 +d skip It may be equal to d skip The value of may be defined by the specification. skipThe value of may vary from SCS to SCS and may depend on the UE capabilities.

[0136] The value of T_proc_skip is T proc, 2 May be equivalent to +dskip. d skip The value of may be defined by the specification. skip The value of may vary from SCS to SCS and may depend on the UE capabilities.

[0137] For example, the UE may not expect to detect a DCI indicating a skip activation that starts / ends no later than T_proc_skip after the ending symbol / slot of the DCI.

[0138] For example, the UE may not assume that the value of K_offset in Option A of Proposal 1 is smaller than T_proc_skip.

[0139] <Proposal 3: Skip Deactivation> Proposal 3 proposes the operation of a UE when a deactivation DCI or the like is received.

[0140] (According to Proposal 1), when a UE receives a deactivation DCI / MAC CE indicating deactivation of skipping of measurement gaps etc. while skip activation is in progress, the UE may stop skipping measurement gaps etc. after one of the following timings: - when the deactivation DCI etc. is received - when N slots / symbols / ms have elapsed since the transmission of a HARQ-ACK for the deactivation DCI etc. - when N slots / symbols / ms have elapsed since the transmission of a HARQ-ACK for the PDSCH scheduled by the deactivation DCI - when N slots / symbols / ms have elapsed since the reception of a PDSCH / PUSCH scheduled by the deactivation DCI - when N slots / symbols / ms have elapsed since the reception of a CSI-RS / SRS triggered by the deactivation DCI

[0141] <Proposal 3-1: Application Time of Deactivation Instruction> The value of N may be set by the RRC, may be defined by a specification, or may be indicated by the deactivation DCI / MAC CE.

[0142] (Variation of Proposal 3-1) The value of N may vary for each SCS and may depend on the capabilities of the UE.

[0143] The value of N may be determined based on the SCS of the serving cell of the DCI / MAC CE, or based on the minimum value between the SCS of the serving cell of the DCI / MAC CE and the SCS of the serving cell of the scheduled PDSCH / PUSCH, or based on the minimum value between the SCSs of configured serving cells (within the same frequency range / band as the cell of the DCI / MAC CE).

[0144] The value of N may be counted based on any of the following SCSs: the SCS of the serving cell of the deactivation DCI / MAC CE, the SCS of the serving cell of the PDSCH / PUSCH scheduled by the deactivation DCI (if any), or the explicitly configured SCS.

[0145] <Proposal 3-2: Design of Deactivation DCI> When the dynamic instruction of skip deactivation is by DCI, the design of the deactivation DCI is as follows.

[0146] <Proposal 3-2-1: DCI Format> (Option 3-2-1) A new DCI format or an existing DCI format including a CRC scrambled with a new RNTI may be used as the deactivation DCI.

[0147] (Option 3-2-2) The deactivation DCI may use an existing DCI format including a CRC scrambled by an existing RNTI.

[0148] <Proposal 3-2-2: DCI fields and their contents> If the DCI is based on a new DCI format or an existing field containing a CRC scrambled by a new RNTI, the DCI format includes a field indicating "skip deactivation".

[0149] If the DCI is in the existing DCI format with a CRC scrambled by the existing RNTI, the deactivation of skipping of measurement gaps etc. may be signaled by one of the following options:

[0150] (Option 3-2-1: New Field) A new field may indicate whether or not skip deactivation is to be performed.

[0151] (Examples of New Fields) Specific examples of new fields include the following: (Example 1): New fields in non-fallback DL grant DCIs (e.g., DCI1_1 / 1_2 / 1_3) with (or without) PDSCH scheduling (Example 2): New fields in non-fallback UL grant DCIs (e.g., DCI0_1 / 0_2 / 0_3) with (or without) PUSCH scheduling

[0152] Whether the new field is present in the DCI format may be configured by the RRC.

[0153] (Variation of Option 3-2-1) The field for deactivating skipping of measurement gaps, etc. may be the same field as the field for skip activation (i.e., field 1 of Proposal 2-2 (i.e., "skip activation flag")). For example, a "skip activation / deactivation flag (field)" is introduced. If the value of this field indicates "0" (or "1"), the deactivation DCI indicates that skipping of measurement gaps, etc. is activated, and if the value of this field indicates "1" (or "0"), the deactivation DCI indicates that skipping of measurement gaps, etc. is deactivated.

[0154] (Option 3-2-2: Based on the values ​​of existing fields) For example, if the DCI indicates specific values ​​of specific DCI fields (e.g., HPN all "0", FDRA all "0", TDRA all "0", MCS all "0", etc.), the UE reinterprets the existing DCI fields as an indication of skip deactivation.

[0155] (Examples of Existing Fields) Specific examples of existing fields include the following: (Example 1): Existing fields in non-fallback DL grant DCIs (e.g., DCI1_1 / 1_2 / 1_3) without PDSCH scheduling (Example 2): Existing fields in non-fallback UL grant DCIs (e.g., DCI0_1 / 0_2 / 0_3) without PUSCH scheduling

[0156] <Proposal 3-3: Processing Timeline> The timeline for skip deactivation is shown below.

[0157] The processing time for a DCI that deactivates a skip, such as a particular measurement gap, is defined as the minimum time required to process the deactivation DCI (eg, T_proc_de-act-skip).

[0158] The value of T_proc_de-act-skip. can be reused from the contents described in Proposal 2-4 by replacing "T_proc_skip" with "T_proc_de-act-skip".

[0159] (Variation of Proposal 3-3) When the UE is performing skip activation, if the skip timer (the length of the timer is set by RRC) expires before detecting the deactivation DCI / MAC CE, the UE may automatically stop skipping measurement gaps, etc.

[0160] When the UE is in a skip activation state, if the skipping of measurement gaps etc. is applied for a specific period (e.g., configured by RRC or indicated by an activation DCI / MAC CE), the UE may automatically stop skipping measurement gaps etc. Similarly, if the UE does not detect a skip deactivation DCI / MAC CE for a specific period, the UE may also automatically stop skipping measurement gaps etc.

[0161] When the UE is performing skip activation with a skip pattern (as described in Option C of Proposal 1), the skip pattern may be applied only for one or more periods. Note that the period for which the skip pattern is applied may be predefined by the specification, configured by the RRC, or indicated by the DCI / MAC CE. Also, the number of periods for which the skip pattern is applied may be predefined by the specification, configured by the RRC, or indicated by the DCI / MAC CE.

[0162] (Effect) According to the above proposal, skipping of measurement gaps etc. (opportunities) can be activated / deactivated based on dynamic notification by DCI, thereby reducing the impact caused by scheduling restrictions on measurements.

[0163] <UE capability> UE capability indicating the capabilities of a terminal may include the following information indicating the capabilities of the terminal. Terminal 200 may report the following information indicating the capabilities of the terminal to base station 100. Note that the information indicating the capabilities of the terminal may correspond to information defining the capabilities of the terminal.

[0164] Information defining whether the terminal supports dynamic indication of measurement gaps / RRM measurements / activation of SMTC window skipping by DCI. Information defining whether the terminal supports dynamic indication of measurement gaps / RRM measurements / deactivation of SMTC window skipping by DCI.

[0165] In the above, an example has been described in which notifications, requests (skip patterns, etc.) to skip measurement gaps / RRM measurements / SMTC windows (opportunities) are exchanged between base station 100 and terminal 200, but notifications, requests (skip patterns, etc.) to not skip measurement gaps / RRM measurements / SMTC windows (opportunities) may also be exchanged.

[0166] Next, the configurations of the base station 100 and the terminal 200 will be described. Note that the configurations of the base station 100 and the terminal 200 described below are examples of functions related to this embodiment. The base station 100 and the terminal 200 may have functions not shown. Furthermore, the functional divisions and / or names of the functional units are not limited as long as the functions perform the operations related to this embodiment.

[0167] <Configuration of Base Station> Fig. 5 is a block diagram showing an example of the configuration of base station 100 according to this embodiment. Base station 100 includes, for example, a transmitting unit 101, a receiving unit 102, and a control unit 103. Base station 100 communicates with terminal 200 (see Fig. 6) by radio.

[0168] The transmitter 101 transmits a downlink (DL) signal to the terminal 200. For example, under the control of the controller 103, the transmitter 101 transmits a DL signal (for example, the above-mentioned RRC, SIB, MAC CE, DCI, notification, confirmation, etc.).

[0169] The DL signal may include, for example, a downlink data signal and control information (e.g., Downlink Control Information (DCI)). The DL signal may also include information indicating scheduling related to signal transmission of terminal 200 (e.g., an UL grant). The DL signal may also include control information of higher layers (e.g., control information of Radio Resource Control (RRC)). The DL signal may also include a reference signal.

[0170] Channels used for transmitting DL signals include, for example, a downlink data channel and a downlink control channel. For example, the downlink data channel may include a PDSCH (Physical Downlink Shared Channel), and the downlink control channel may include a PDCCH (Physical Downlink Control Channel). For example, the base station 100 transmits downlink control information to the terminal 200 using the PDCCH and transmits downlink data signals using the PDSCH.

[0171] The reference signal included in the DL signal may include at least one of a demodulation reference signal (Demodulation Reference Signal (DMRS)), a Phase Tracking Reference Signal (PTRS), a Channel State Information-Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), and a Positioning Reference Signal (PRS) for position information. For example, reference signals such as DMRS and PTRS are used for demodulating downlink data signals and are transmitted using the PDSCH.

[0172] The receiving unit 102 receives an uplink (UL) signal transmitted from the terminal 200. For example, the receiving unit 102 receives an UL signal (for example, the above-mentioned request, notification, etc.) under the control of the control unit 103.

[0173] The transmitting unit 101 and the receiving unit 102 may be collectively referred to as a communication unit.

[0174] The control unit 103 controls the communication operations of the base station 100 , including the transmission processing of the transmission unit 101 and the reception processing of the reception unit 102 .

[0175] For example, the control unit 103 acquires information such as data and control information from the upper layer and outputs it to the transmitting unit 101. The control unit 103 also outputs the data, control information, etc. received from the receiving unit 102 to the upper layer.

[0176] For example, the control unit 103 allocates resources (or channels) used for transmitting and receiving DL signals and / or resources used for transmitting and receiving UL signals based on signals (e.g., data and control information, etc.) received from the terminal 200 and / or data and control information, etc. acquired from a higher layer. Information on the allocated resources may be included in control information transmitted to the terminal 200.

[0177] 6 is a block diagram showing an example of the configuration of terminal 200 according to this embodiment. Terminal 200 includes, for example, a receiving unit 201, a transmitting unit 202, and a control unit 203. Terminal 200 communicates with base station 100, for example, wirelessly.

[0178] In relation to the above proposal, for example, the receiver 201 may receive, from the base station 100, first information (such as an RRC) regarding an extended period (such as a measurement gap opportunity) for measurements (such as SSB measurements) using measurement signals (such as an SSB). For example, the receiver 201 may receive, from the base station 100, second information (such as an RRC, SIB, MAC CE, or DCI) indicating that measurements will not be performed during a portion of the periodic extended period. For example, after receiving the second information, the receiver 201 may receive, from the base station 100, information (such as a MAC CE or DCI) indicating that measurements will be performed during another portion of the periodic extended period. The receiver 201 may receive a signal from the base station 100 during a portion of the periodic extended period.

[0179] The transmitting unit 202 transmits an UL signal to the base station 100. For example, under the control of the control unit 203, the transmitting unit 202 transmits an UL signal (for example, the above-mentioned request, notification, etc.).

[0180] In relation to the above proposal, for example, the transmitter 202 may transmit a signal to the base station 100 during a portion of a periodic extended period (such as a measurement gap opportunity) for measurements (such as SSB measurements) using a measurement signal (such as SSB).

[0181] The UL signal may include, for example, an uplink data signal and control information (e.g., UCI). For example, information related to the processing capability of the terminal 200 (e.g., UE capability) may be included. The UL signal may also include a reference signal.

[0182] Channels used for transmitting UL signals include, for example, an uplink data channel and an uplink control channel. For example, the uplink data channel includes a PUSCH (Physical Uplink Shared Channel), and the uplink control channel includes a PUCCH (Physical Uplink Control Channel). For example, terminal 200 transmits uplink control information to base station 100 using the PUCCH and transmits uplink data signals using the PUSCH.

[0183] The reference signals included in the UL signal may include, for example, at least one of DMRS, PTRS, CSI-RS, SRS, and PRS. For example, the reference signals such as DMRS and PTRS are used for demodulating the uplink data signal and are transmitted using an uplink channel (for example, PUSCH).

[0184] The receiving unit 201 and the transmitting unit 202 may be collectively referred to as a communication unit.

[0185] The control unit 203 controls the communication operations of the terminal 200 , including the reception processing in the receiving unit 201 and the transmission processing in the transmitting unit 202 .

[0186] For example, the control unit 203 acquires information such as data and control information from the upper layer and outputs it to the transmitting unit 202. Also, the control unit 203 outputs, for example, the data and control information received from the receiving unit 201 to the upper layer.

[0187] For example, the control unit 203 controls transmission of information to be fed back to the base station 100. The information to be fed back to the base station 100 may include, for example, HARQ-ACK, Channel State Information (CSI), or a Scheduling Request (SR). The information to be fed back to the base station 100 may be included in UCI.

[0188] In relation to the above proposal, for example, the control unit 203 may periodically set an extended period (such as a measurement gap opportunity) for measurements (such as SSB measurements) using a measurement signal (such as SSB) based on the first information. For example, the control unit 203 may determine a portion of the periodic extended period during which measurements are not performed based on the second information, or may not perform measurements during the determined portion of the periodic extended period.

[0189] Note that the channel used for transmitting the DL signal and the channel used for transmitting the UL signal are not limited to the above-mentioned example. For example, the channel used for transmitting the DL signal and the channel used for transmitting the UL signal may include a Random Access Channel (RACH) and a Physical Broadcast Channel (PBCH). The RACH may be used to transmit Downlink Control Information (DCI) including a Random Access Radio Network Temporary Identifier (RA-RNTI), for example.

[0190] The above configuration can reduce the impact of scheduling restrictions on measurements.

[0191] <Summary of the embodiment> As described above, according to one aspect of the present disclosure, a terminal is provided that includes a communication unit that receives or transmits signals and a control unit that performs measurements during a measurement period, and the control unit determines whether to activate skipping of the measurement based on a field of downlink control information received by the communication unit.

[0192] The above configuration allows for activation / deactivation of skipping of measurement gaps etc. (opportunities) based on dynamic notification by DCI, thereby reducing the impact of scheduling restrictions on measurements.

[0193] In one example, the field of the downlink control information is a 1-bit flag field, and the control unit activates skipping of the measurement when the flag field has a specific value.

[0194] In one example, the downlink control information indicates a specific measurement period, and the control unit determines whether to activate measurement skipping during the specific measurement period based on a field of the downlink control information.

[0195] In one example, the downlink control information indicates a skip pattern by a bitmap, and the control unit activates the skip of the measurement in a measurement period corresponding to a bit having a specific value in the bitmap.

[0196] According to one aspect of the present disclosure, a communication method is provided in which a terminal sets a measurement period, determines whether to activate measurement skipping during the measurement period based on a field of downlink control information, and receives or transmits signals during the measurement period when measurement skipping is activated.

[0197] The above configuration allows for activation / deactivation of skipping of measurement gaps etc. (opportunities) based on dynamic notification by DCI, thereby reducing the impact of scheduling restrictions on measurements.

[0198] <Hardware Configuration, etc.> 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. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may also be realized by combining software with the single device or the multiple devices.

[0199] Functions include, but are not limited to, judgment, determination, assessment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0200] For example, a base station, a terminal, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the communication method of the present disclosure. Fig. 7 is a diagram illustrating an example of the hardware configuration of a base station and a terminal according to an embodiment of the present disclosure. The above-described base station 100 and terminal 200 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.

[0201] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configuration of base station 100 and terminal 200 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.

[0202] Each function in the base station 100 and the terminal 200 is realized by loading specified software (programs) onto hardware such as the processor 1001 and the memory 1002, causing the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0203] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured by 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 control unit 103 and control unit 203 may be realized by the processor 1001.

[0204] The processor 1001 also reads 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 in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 203 of the terminal 200 may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and similar implementations may be made for other functional blocks. While the above-described various processes have been described as being executed by one processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The programs may also be transmitted from a network via a telecommunications line.

[0205] The memory 1002 is a computer-readable recording medium and may be configured by, for example, at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), etc. The memory 1002 may also be called a register, a cache, a main memory (primary storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.

[0206] Storage 1003 is a computer-readable recording medium, and may be composed of at least one of, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. Storage 1003 may also be referred to as an auxiliary storage device. The above-mentioned storage medium may be, for example, a database, a server, or other appropriate medium including at least one of memory 1002 and storage 1003.

[0207] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, 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. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmitter 101, receiver 102, receiver 201, transmitter 202, etc. may be realized by the communication device 1004.

[0208] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0209] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0210] Furthermore, base station 100 and terminal 200 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), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

[0211] (Supplementary Notes on the Embodiments) Although the embodiments of the present disclosure have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present disclosure; matters described in two or more items may be used in combination as needed, and matters described in one item may apply to matters described in another item (unless inconsistent). Boundaries between functional units or processing units in functional block diagrams do not necessarily correspond to boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of processing procedures described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, base stations and terminals have been described using functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof. The software operated by the processor of a base station in accordance with an embodiment of the present disclosure, and the software operated by the processor of a terminal in accordance with an embodiment of the present disclosure may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.

[0212] <Notification of Information, Signaling> Notification of information is not limited to the embodiments described in the present disclosure and may be performed using other methods. For example, notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB))), other signals, or a combination thereof. Furthermore, RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0213] <Applicable Systems> The embodiments described in the present disclosure are applicable to LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802.34 (WiMAX (registered trademark The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), or other suitable systems, and next-generation systems that are extended, modified, created, or defined based on these systems. The present invention may also be applied to a combination of multiple systems (e.g., a combination of LTE and / or LTE-A with 5G).

[0214] <Processing Procedures, etc.> The processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be rearranged 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.

[0215] <Operation of Base Station> In the present disclosure, specific operations described as being performed by a base station may also be performed by its upper node in some cases. In a network consisting of 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 at least one of the base station and another network node other than the base station (for example, an MME or an S-GW, etc., but are not limited to these). Although the above example illustrates a case where there is one other network node other than the base station, a combination of multiple other network nodes (for example, an MME and an S-GW) may also be used.

[0216] <Direction of Input / Output> Information, etc. (see <Information, Signal>) can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may also be input / output via multiple network nodes.

[0217] <Handling of Input / Output Information, etc.> Input / output information, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information, etc. may be overwritten, updated, or added. Output information, etc. may be deleted. Input information, etc. may be sent to another device.

[0218] <Determination method> The determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0219] <Variations of Aspects, etc.> Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched depending on the implementation. In addition, notification of predetermined information (e.g., notification that "X is true") is not limited to being done explicitly, but may be done implicitly (e.g., by not notifying the predetermined information).

[0220] Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure.

[0221] <Software> 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.

[0222] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0223] Information, Signals, etc., described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which 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.

[0224] Note that terms described in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

[0225] <System, Network> As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0226] <Parameter and Channel Names> Furthermore, the information, parameters, and the like described in the present disclosure may be expressed using absolute values, relative values ​​from a predetermined value, or other corresponding information. For example, a radio resource may be indicated by an index.

[0227] The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical expressions using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0228] <Base Station> In the present 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," and "component carrier" may be used interchangeably. A base station may also be referred to by terms such as a macrocell, a small cell, a femtocell, and a picocell.

[0229] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a remote radio head (RRH)). The terms "cell" or "sector" refer to part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication services within that coverage area.

[0230] In the present disclosure, the base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.

[0231] Mobile Station In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," and the like may be used interchangeably.

[0232] A mobile station may also be referred to by those skilled in the art 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.

[0233] <Base Station / Mobile Station> At least one of the base station and the mobile station may be referred to as a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, etc. The mobile object refers to a movable object, and may move at any speed. Naturally, this also includes cases where the mobile object is stationary. Examples of the mobile object include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and objects mounted thereon. The mobile object may also be a mobile object that moves autonomously based on an operational command. It may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (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 be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0234] Furthermore, a base station in the present disclosure may be read as a terminal. For example, the embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a terminal is replaced with communication between multiple terminals (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)). In this case, the terminal may be configured to have the functions of the base station described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0235] Similarly, the term "terminal" in the present disclosure may be read as "base station." In this case, the base station may be configured to have the functions of the terminal described above.

[0236] Fig. 8 shows an example configuration of a vehicle 2001. As shown in Fig. 8, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in the present disclosure may be applied to a communication device mounted on the vehicle 2001, and may be applied to the communication module 2013, for example.

[0237] The drive unit 2002 is configured, for example, by an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

[0238] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0239] The signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 2022, an air pressure signal of the front and rear wheels obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

[0240] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various types of information, such as driving information, traffic information, and entertainment information, and one or more ECUs that control these devices. The information service unit 2012 provides various types of multimedia information and multimedia services to the occupants of the vehicle 2001 by using information acquired from external devices via the communication module 2013, etc.

[0241] The information service unit 2012 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0242] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driving burden on the driver, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. In addition, the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0243] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 2029, which are provided in the vehicle 2001.

[0244] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

[0245] The communication module 2013 may transmit at least one of signals from the above-mentioned various sensors 2021 to 2029 input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication. The electronic control unit 2010, the various sensors 2021 to 2029, the information service unit 2012, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above-mentioned input.

[0246] The communication module 2013 receives various information (traffic information, traffic signal information, vehicle-to-vehicle information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 2013). The communication module 2013 also stores the various information received from external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021 to 2029, and the like provided in the vehicle 2001.

[0247] <Meaning and Interpretation of Terms> As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching a table, database, or other data structure), ascertaining something that is considered to be a "judging" or "determining," and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like that are considered to be a "judging" or "determining." Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0248] 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 elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0249] <Reference Signal> A reference signal can also be abbreviated as RS (Reference Signal), and may also be called a pilot depending on the applicable standard.

[0250] <Meaning of "based on"> 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."

[0251] "First," "Second" Any reference to an element using designations 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.

[0252] <Means> The "means" in the configuration of each device above may be replaced with "section," "circuit," "device," etc.

[0253] Open Format: 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." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0254] <Time Units such as TTI, Frequency Units such as RB, and Radio Frame Configuration> A radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further 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.

[0255] Numerology may be a communication parameter that applies to the transmission and / or reception of a signal or channel, and may indicate, for example, at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transceiver in the frequency domain, and specific windowing operations performed by the transceiver in the time domain.

[0256] A slot may be composed of one or more symbols in the time domain (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol). A slot may be a time unit based on numerology.

[0257] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0258] The radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals, and may be referred to by other names corresponding to the radio frame, subframe, slot, minislot, and symbol.

[0259] 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 existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0260] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio 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.

[0261] 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) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0262] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0263] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0264] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 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 greater than or equal to 1 ms.

[0265] 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. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may be determined based on numerology.

[0266] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0267] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0268] 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.

[0269] A Bandwidth Part (BWP) (which may also be referred to as a fractional bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0270] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be configured for a UE within one carrier.

[0271] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0272] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples, and various changes may be made to 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.

[0273] <Maximum Transmit Power> The "maximum transmit power" in the present disclosure may refer to the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0274] Articles In this disclosure, where articles are 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.

[0275] <"Different"> In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." Note that the term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0276] One aspect of the present disclosure is useful in wireless communication systems.

[0277] 10 Wireless communication system 20 NG-RAN 100 Base station (gNB) 200 Terminal (UE) 101, 202 Transmitter 102, 201 Receiver 103, 203 Controller

Claims

1. A terminal comprising: a communication unit that receives or transmits signals; and a control unit that performs measurements during a measurement period, wherein the control unit determines whether to activate skipping of the measurement based on a field of downlink control information received by the communication unit.

2. The terminal according to claim 1, wherein the downlink control information field is a 1-bit flag field, and the control unit activates skipping of the measurement when the flag field has a specific value.

3. The terminal according to claim 1, wherein the downlink control information indicates a specific measurement period, and the control unit determines whether to activate skipping of measurements during the specific measurement period based on a field of the downlink control information.

4. The terminal according to claim 1, wherein the downlink control information indicates a skip pattern using a bitmap, and the control unit activates skipping of the measurement during a measurement period corresponding to a bit having a specific value in the bitmap.

5. A communication method in which a terminal sets a measurement period, determines whether to activate measurement skipping during the measurement period based on a field of downlink control information, and receives or transmits signals during the measurement period when measurement skipping is activated.

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