Terminal, wireless communication method, and base station

Abstract

A terminal according to one embodiment of the present disclosure is characterized by being provided with: a reception unit that receives downlink control information (DCI); and a control unit that ignores at least one of a demodulation reference signal (DMRS) sequence initialization field and a phase tracking reference signal (PTRS)-DMRS association field of the DCI in a case where a physical uplink shared channel (PUSCH) waveform can be dynamically switched and a discrete Fourier transform extended orthogonal frequency division multiplexing (DFT-s-OFDM) waveform is indicated to the PUSCH. According to one embodiment of the present disclosure, waveform switching can be appropriately performed.

Description

Technical Field

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

[0002] In a Universal Mobile Telecommunication System (UMTS) network, Long Term Evolution (LTE) has been standardized for the purpose of further high-speed data rates, low latency, etc. (Non-Patent Document 1). In addition, for the purpose of further high-capacity and high-level of LTE (Third Generation Partnership Project (3GPP (registered trademark)) Release (Rel.) 8, 9), LTE-Advanced (3GPP Rel. 10-14) has been standardized.

[0003] Research is also being conducted on a successor system to LTE (for example, also referred to as the 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 and later, etc.).

[0004] Prior Art Documents

[0005] Non-Patent Documents

[0006] Non-Patent Document 1: 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the Invention

[0007] Problems to be Solved by the Invention

[0008] In future wireless communication systems, research is underway to support not only the Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform, which is a single-carrier waveform, but also the Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) waveform, which is a multi-carrier waveform.

[0009] However, the setting of conventional waveforms is performed by Radio Resource Control (RRC). Therefore, in order to switch waveforms, RRC reconfiguration is required. As a result, there are concerns about an increase in signaling overhead and a decrease in communication throughput.

[0010] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station capable of appropriately performing waveform switching.

[0011] Means for Solving the Problem

[0012] A terminal according to one embodiment of the present disclosure is characterized by including: a receiving unit that receives downlink control information (DCI); and a control unit that, when the Physical Uplink Shared Channel (PUSCH) waveform can be dynamically switched and the PUSCH is indicated with the Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform, ignores at least one of a demodulation reference signal (DMRS) sequence initialization field and a phase tracking reference signal (PTRS)-DMRS association field of the DCI.

[0013] Advantageous Effects of the Invention

[0014] According to one embodiment of the present disclosure, waveform switching can be appropriately performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a diagram showing the DCI size of Option 1-1.

[0016] Figure 2 It is a diagram showing the DCI size of Option 1-2.

[0017] Figure 3 It is a flowchart showing an example of the processing of Embodiment 0.1.

[0018] Figure 4 It is a flowchart showing an example of the processing of Embodiment 0.2.

[0019] Figure 5 It is a diagram showing the definition of the PTRS-DMRS association and DMRS sequence initialization of the DCI field.

[0020] Figure 6 It is a diagram showing an example of the setting mode of useInterlacePUCCH-PUSCH, resource allocation, and RA type.

[0021] Figure 7 It is a flowchart showing an example of the processing of Embodiment 3.

[0022] Figure 8 It is a diagram showing an example of the MAC payload.

[0023] Figure 9 It is a diagram showing an example of the number of bits of the RAR permission field.

[0024] Figure 10 It is a diagram showing an example of the value of the TPC command.

[0025] Figure 11 It is a diagram showing an example of the Backoff Parameter value.

[0026] Figure 12 It is a diagram showing an example of the schematic structure of a wireless communication system according to an embodiment.

[0027] Figure 13 It is a diagram showing an example of the structure of a base station according to an embodiment.

[0028] Figure 14 It is a diagram showing an example of the structure of a user terminal according to an embodiment.

[0029] Figure 15 It is a diagram showing an example of the hardware structure of a base station and a user terminal according to an embodiment.

[0030] Figure 16 It is a diagram showing an example of a vehicle according to an embodiment. Detailed implementation manners

[0031] (CP-OFDM and DFT-s-OFDM)

[0032] In the uplink (UL) of a wireless communication system (e.g., NR), in addition to supporting the Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) waveform as a multi-carrier waveform, the Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform as a single-carrier waveform is also supported. The "waveform" in this disclosure means at least one of the CP-OFDM waveform (waveform based on CP-OFDM) and the DFT-s-OFDM waveform (waveform based on DFT-s-OFDM).

[0033] The frequency resource allocation of CP-OFDM can be carried out more flexibly. For example, both continuous Physical Resource Block (PRB) allocation and discontinuous PRB allocation are allowed. In addition, the continuous PRB allocation is not limited to multiples of 2, 3, or 5. In the case of applying CP-OFDM, the Demodulation Reference Signal (DMRS) and the PUSCH can also use Frequency Division Multiplexing (FDM).

[0034] Although the frequency resource allocation of DFT-s-OFDM has greater constraints, its Peak to Average Power Ratio (PAPR) is low, which is suitable for UEs with power limitations.

[0035] In addition, regarding the communication throughput without considering PAPR, the communication throughput of CP-OFDM is higher than that of DFT-s-OFDM. For the communication throughput considering PAPR, when the SNR (MCS) is high (modulation and coding scheme is 16QAM or 64QAM), the communication throughput of CP-OFDM becomes higher than that of DFT-s-OFDM, but when the SNR (MCS) is low (modulation and coding scheme is QPSK), the communication throughput of DFT-s-OFDM is higher than that of CP-OFDM. That is, the preferred waveform is different according to the SNR (MCS).

[0036] Generally, the network (NW) switches waveforms based on the Signal to Noise Ratio (SNR). The switching between DFT-s-OFDM and CP-OFDM is switched by the transform precoder "transformPrecoder" set in the Physical Uplink Shared Channel (PUSCH) of the Radio Resource Control (RRC) signaling (PUSCH-Config). When the transform precoder is Disabled, CP-OFDM is applied, and when it is Enabled, DFT-s-OFDM is applied. The switching of waveforms requires RRC reconstruction. Therefore, there is a concern about an increase in signaling overhead and a decrease in communication throughput.

[0037] For more flexible throughput control, consider dynamically switching between CP-OFDM and DFT-s-OFDM via DCI / MAC CE. However, research on such dynamic switching has not progressed.

[0038] For example, in existing specifications (such as 3GPP Rel.16), as shown in the following (1) to (6), the sizes of several DCI fields in the DCI format (such as DCI format 0_0 / 0_1 / 0_2) are affected by waveform switching.

[0039] (1) In the "precoding information and number of layers" field, different tables are used for the two waveforms.

[0040] (2) In the "Antenna ports" field, different tables are used for the two waveforms.

[0041] (3) In the "DMRS sequence initialization" field, it becomes 0 bits when the transform precoder is valid and 1 bit when it is invalid.

[0042] (4) In the "PTRS-DMRS association" field, the DCI size is affected by the transform precoder.

[0043] (5) In "Frequency domain resource assignment", the DCI size varies according to the resource allocation type. In addition, the supported resource allocation varies according to the waveform. CP-OFDM supports resource allocation types 0, 1, and 2, and DFT-s-OFDM supports resource allocation types 1 and 2.

[0044] (6) In the "Frequency hopping flag" field, the DCI size varies according to the resource allocation type. As described above, the supported resource allocation varies according to the waveform.

[0045] (Dynamic switching between deactivation and activation of the transform precoder)

[0046] The UE can also receive a setting indicating dynamic switching between deactivation and activation of the transform precoder for the PUSCH via DCI / MAC CE. Moreover, the UE can also receive an indication of activation or deactivation of the transform precoder for the PUSCH via DCI / MAC CE. Hereinafter, the dynamic switching based on DCI / MAC CE may sometimes be simply referred to as dynamic switching. In addition, the UE can also be pre-set in higher layer signaling, etc. for dynamic switching of the waveform / transform precoder (switching can be performed). It is also possible that the dynamic switching of the transform precoder based on DCI / MAC CE can be performed regardless of whether or not this setting is present.

[0047] For example, the dynamic waveform switching based on DCI signaling can also be performed implicitly or explicitly. For example, a 1-bit field indicating the CP-OFDM or DFT-s-OFDM waveform used in the PUSCH can also be included in the DCI (explicit signaling). For example, the UE can also determine / identify the CP-OFDM or DFT-s-OFDM waveform used in the PUSCH according to specific conditions in the scheduling information, etc. in the DCI (implicit signaling). In this case, the existing DCI format is not changed.

[0048] Alternatively, the dynamic UL waveform switching based on MAC CE signaling can also be performed. For example, a 1-bit field indicating the CP-OFDM or DFT-s-OFDM waveform used in the PUSCH can also be included in the MAC CE (explicit signaling). Alternatively, the UE can also determine / identify the CP-OFDM or DFT-s-OFDM waveform used in the PUSCH based on the existing fields of the MAC CE (implicit signaling).

[0049] The DCI formats in the present disclosure can represent, for example, DCI format 0_0 / 0_1 / 0_2, or can be other formats (e.g., DCI format 0_3 for notifying waveform switching). As other formats, group-common DCIs such as DCI format 2_x can also be used, for example. In this case, it can also be that the UE applies waveform switching after a certain time after receiving DCI format 2_x and sending ACK.

[0050] The switching between deactivation and activation of the transform precoder (waveform switching) in the present disclosure can also be waveform switching within the same BWP (switching the waveform without switching the BWP). For example, different transform precoders can be set for each BWP. Therefore, although switching the transform precoder by BWP switching is considered, there will be a delay caused by BWP switching. Therefore, by switching between deactivation and activation of the transform precoder within the same BWP, the delay can be suppressed.

[0051] When it is set to dynamically switch between deactivation and activation of the transform precoder for PUSCH by DCI / MAC CE, the UE can also receive an indication representing activation or deactivation of the transform precoder for PUSCH by DCI / MAC CE, and based on this indication, switch the waveform (CP-OFDM / DFT-s-OFDM) used for PUSCH.

[0052] The total DCI size of the DCI format can also be fixed regardless of the deactivation and activation of the transform precoder. The size of the DCI format can also be set / decided by higher layer signaling (RRC). That is, the size of the DCI format can be independent of DCI / MAC CE.

[0053] However, it can also be that in some DCI fields, the size of each DCI field is different according to the deactivation and activation of the transform precoder. This part of the DCI fields is, for example, "precoding information and number of layers", "Antenna ports", "DMRS sequence initialization", "PTRS-DMRS association", "Frequency resource assignment", "Frequency hopping flag". For example, the DCI size can be different as shown in (1) to (6) of the above existing specifications.

[0054] [Option 1-1]

[0055] When the dynamic switching of the transform precoder for PUSCH (switching based on DCI / MAC CE) is set for PUSCH, for each DCI format, the total size of the DCI format can also be the larger one of the size of each DCI format when the transform precoder is invalid and the size of each DCI format when the transform precoder is valid.

[0056] When the transform precoder is deactivated / activated by MAC CE, the UE can also read each DCI field starting from the least significant bit (Least Significant Bit (LSB)) according to the size of each DCI field. Alternatively, the UE can also read each DCI field starting from the most significant bit (Most Significant bit (MSB)).

[0057] Figure 1 It is a diagram showing the DCI size of Option 1-1. According to Figure 1 , the number of DCI bits (total of DCI fields #1 to #4) when the transform precoder is invalid is 10 bits, and the number of DCI bits when the transform precoder is valid is 7 bits. In this case, as the total DCI size in the case where the dynamic switching of the transform precoder is set, the larger DCI size of 10 bits is used.

[0058] In Figure 1 , the smaller DCI bits (DCI bits when the transform precoder is valid) are filled and mapped starting from the left (least significant bit), but they can also be filled and mapped starting from the right (most significant bit). That is, the UE can read each DCI field starting from the least significant bit or starting from the most significant bit.

[0059] In Option 1-1, when compared with Option 1-2 described later, the total DCI size can be reduced.

[0060] [Option 1-2]

[0061] It can also be that when the dynamic switching of the transform precoder for PUSCH is set for PUSCH, for each DCI format, the size of the larger one of the size of the DCI field when the transform precoder is invalid and the size of the DCI field when the transform precoder is valid is determined for each field, and the total size of the DCI format is the sum value of the size of the larger one in all DCI fields.

[0062] That is, when the number of fields of a certain DCI format is set to N, the total size of the DCI format is calculated as follows.

[0063] Total size of DCI format = Σ(MAX(size of DCI field i when the transform precoder is invalid, size of DCI field i when the transform precoder is valid)) (i = 1 to N)

[0064] When the transform precoder is deactivated / activated by MAC CE, the UE can also read each DCI field starting from the least significant bit (LSB) according to the size of each DCI field. Alternatively, the UE can also read each DCI field starting from the most significant bit (MSB).

[0065] Figure 2 It is a diagram showing the DCI size of Option 1-2. According to Figure 2 , in DCI field #1, the larger of the size of the DCI field (2 bits) when the transform precoder is invalid and the size of the DCI field (1 bit) when the transform precoder is valid is 2 bits. Similarly, regarding the size of the larger one, it is 3 bits for DCI field #2, 2 bits for DCI field #3, and 4 bits for DCI field #4. By summing their sizes (2 + 3 + 2 + 4 = 11), 11 bits are used as the total DCI size in the case where dynamic switching of the transform precoder is set.

[0066] In Figure 2 , in each field, the smaller DCI bits are filled and mapped starting from the left (least significant bit), but they can also be filled and mapped starting from the right (most significant bit). That is, the UE can read each DCI field starting from the least significant bit or starting from the most significant bit.

[0067] In Figure 2 's example, when the transform precoder is invalid and valid, the bits at the starting position of each field (the bit range used in each field) are the same. For example, the starting position of DCI field #1 is the 1st bit, the starting position of DCI field #2 is the 3rd bit, the starting position of DCI field #3 is the 6th bit, and the starting position of DCI field #4 is the 8th bit. Therefore, it is possible to facilitate the detection process of each field of the UE.

[0068] In Options 1-2, even if the validity / invalidity of the transform precoder is switched, since the detected DCI size is the same, an increase in the processing load of the UE can be suppressed.

[0069] (FDRA type)

[0070] In NR, as the Frequency Domain Resource Allocation (FDRA) type, the following three types, i.e., Type 0, Type 1, and Type 2, are supported.

[0071] Type 0: Bitmap-based allocation (i.e., it can also be non-continuous).

[0072] Type 1: Continuous allocation based on the Resource Indication Value (RIV).

[0073] Type 2: Interlace configuration (for NR).

[0074] The applicability of the PUSCH waveform depending on each type can also be supported as follows.

[0075] Type 0: Only CP-OFDM can be applied.

[0076] Type 1: Can be applied to both CP-OFDM and DFTS-OFDM.

[0077] Type 2: Can be applied to both CP-OFDM and DFTS-OFDM.

[0078] When the RRC parameter useInterlacePUCCH-PUSCH is not set, Type 0 or Type 1 is used according to the RRC parameter resourceAllocation. When transmitting UL data of Type 1 without permission, resourceAllocation is set to resourceAllocationType0 or resourceAllocationType1. When resourceAllocationType0 is set, Type 0 is used, and when resourceAllocationType1 is set, Type 1 is used. When dynamicSwitch is set, Type 0 or Type 1 is indicated by the scheduling DCI (MSB of FDRA). When useInterlacePUCCH-PUSCH is set, Type 2 is used.

[0079] (Analysis)

[0080] In the past, the setting of waveforms was performed by Radio Resource Control (RRC). Therefore, in order to switch waveforms, RRC reconfiguration was required. As a result, there are concerns about an increase in signaling overhead and a decrease in communication throughput. Therefore, as described above, by dynamically switching the transform precoder for PUSCH (switching based on DCI / MAC CE), waveform switching can be easily (quickly) implemented. However, in this case, as shown in the following problem points 0 to 3, there are unclear points regarding various settings / controls.

[0081] Therefore, the inventors of the present invention conceived of a terminal that appropriately and dynamically switches the deactivation and activation (waveform switching) of the transform precoder for PUSCH.

[0082] Hereinafter, with reference to the drawings, embodiments related to the present disclosure will be described in detail. The wireless communication methods related to the respective embodiments can be applied separately or in combination.

[0083] In the present disclosure, "A / B" and "at least one of A and B" can also be rewritten as each other. Further, in the present disclosure, "A / B / C" can also mean "at least one of A, B, and C".

[0084] In the present disclosure, notification, activation, deactivation, indication (or specify), selection, configuration, update, determination, etc. can also be rewritten as each other. In the present disclosure, support, control, be able to control, operate, be able to operate, etc. can also be rewritten as each other.

[0085] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, fields, Information Element (IE), settings, etc. can also be rewritten as each other. In the present disclosure, Medium Access Control control element (MAC Control Element (CE)), update command, activation / deactivation command, etc. can also be rewritten as each other.

[0086] In the present disclosure, higher layer signaling can also be any one of, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof.

[0087] In the present disclosure, MAC signaling may also be, for example, a MAC control element (MACCE), a MAC protocol data unit (PDU), etc. Broadcast information may also be, for example, a master information block (MIB), a system information block (SIB), minimum system information (remaining minimum system information (RMSI)), other system information (OSI), etc.

[0088] In the present disclosure, physical layer signaling may also be, for example, downlink control information (DCI), uplink control information (UCI), etc.

[0089] In the present disclosure, an index, an identifier (ID), an indicator, a resource ID, etc. may also be rewritten with each other. In the present disclosure, a sequence, a list, a set, a group, a cluster, a subset, etc. may also be rewritten with each other.

[0090] In the present disclosure, applying / using CP-OFDM and having a transform precoder disabled (deactivated) may also be rewritten with each other. Applying / using DFT-s-OFDM and having a transform precoder enabled (activated) may also be rewritten with each other. The transform precoder being deactivated / activated, the transform precoder being switched, switching waveforms (CP-OFDM / DFT-s-OFDM) may also be rewritten with each other. The PUSCH waveform, the waveform, the transform precoder may also be rewritten with each other. CP-OFDM, the CP-OFDM waveform may also be rewritten with each other. DFT-s-OFDM, the DFT-s-OFDM waveform may also be rewritten with each other. Enabled, ON may also be rewritten with each other. Disabled, OFF may also be rewritten with each other. "A case where the PUSCH waveform can be dynamically switched" and "a case where the PUSCH waveform is set to be dynamically switched" may also be rewritten with each other.

[0091] (Wireless communication method)

[0092] As described above, the UE can also receive settings indicating deactivation and activation of dynamically switching the transform precoder for the PUSCH via DCI / MAC CE. Moreover, the UE can also receive an indication of activation or deactivation of the transform precoder for the PUSCH via DCI / MAC CE. That is, the UE can also be capable of dynamically switching the PUSCH waveform. In this case, at least one of the processes of the following several embodiments can also be applied.

[0093] In the present disclosure, in the case where the PUSCH waveform can be dynamically switched, at least one of the above (dynamic switching of deactivation and activation of the transform precoder) methods can also be applied.

[0094] <Problem 0>

[0095] In the case where the PUSCH waveform can be dynamically switched, it is not clear what values are set in the RRC parameters transformPrecoder and maxRank. For example, in transformPrecoder, a value corresponding to any one of valid (i.e., DFT-s-OFDM), invalid (i.e., CP-OFDM), and unrestricted is expected. For example, according to the setting of the RRC parameter transformPrecoder, it affects the DCI size and the processing load and communication overhead of the UE, so it is preferably made clear.

[0096] <Embodiment 0.1>

[0097] When the UE can dynamically switch the PUSCH waveform, the following any one of the setting methods can also be applied to the RRC parameter transform precoder.

[0098] [Method 1]

[0099] When the PUSCH waveform can be dynamically switched, the RRC parameter transformPrecoder can also be set to Enabled. As a result, the DCI size assumed by the UE becomes smaller. That is, the NW (base station, gNB) can set the DCI size small, so communication overhead can be suppressed.

[0100] [Method 2]

[0101] When the PUSCH waveform can be dynamically switched, the RRC parameter transformPrecoder can also be set to Disabled. As a result, even if the PUSCH waveform is switched to DFT-s-OFDM, since the UE assumes the same DCI size as CP-OFDM, the processing load of the UE can be reduced.

[0102] [Mode 3]

[0103] In the case where the PUSCH waveform can be dynamically switched, the RRC parameter transformPrecoder can also be ignored. That is, there can also be no restrictions on transformPrecoder.

[0104] Figure 3 It is a flowchart showing an example of the processing of Embodiment 0.1. When the UE receives a setting indicating that dynamic switching of the PUSCH waveform is possible (step S101), it receives the RRC parameter transformPrecoder for which valid / invalid is set (step S102).

[0105] As RRC parameters, although there are multiple transformPrecoders, the transformPrecoder referred to by the UE can also be different for each case (each timing). For example, the following Options 1 and 2 can also be applied. In the case where dynamic switching of the PUSCH waveform is set, the processing of the following Options 1 and 2 can also be applied at a timing before the dynamic switching indication of the PUSCH waveform.

[0106] [Option 1]

[0107] The UE can also refer to / consider the transformPrecoder in the RRC IE corresponding to the PUSCH to be transmitted (for example, PUSCH-Config, or ConfiguredGrantConfig). This option can also be applied to the UE after dedicated (UE-specific) RRC configuration.

[0108] [Option 2]

[0109] It can also be that, regardless of the type of PUSCH, the UE refers to / considers the transformPrecoder in a specific RRC IE (for example, msg3-transformPrecoder in RACH-ConfigCommon, etc.). This option can also be applied to the UE before dedicated (UE-specific) RRC configuration.

[0110] According to this embodiment, for the RRC parameter transformPrecoder in the case where the PUSCH waveform can be dynamically switched, the set value and the operation of the UE can be clarified.

[0111] <Embodiment 0.2>

[0112] In the case where the PUSCH waveform can be dynamically switched, the UE can also receive the value / setting based on any of the following methods / options as the maximum rank (maxRank) of the RRC parameter. That is, for the value / setting of maxRank, the UE can also assume the application of any of the following methods / options. maxRank is a parameter representing the maximum value of the transmission rank (layers) of the UL (PUSCH). The UE controls the transmission of the PUSCH based on maxRank.

[0113] [Method 1]

[0114] The setting of maxRank can also be unrestricted. That is, even when the dynamic switching of the PUSCH waveform is set, maxRank can be set to any value.

[0115] [Method 2]

[0116] maxRank can also be set to a specific value or a value smaller than a specific value. The specific value can be determined (fixed) by the specification, for example. Or, the specific value can be set / indicated by RRC / MAC CE / DCI. For example, when the dynamic switching of the PUSCH waveform is set, maxRank (the specific value) can also be 1.

[0117] When maxRank is restricted, for example, if only 1 can be set for maxRank, regardless of the waveform of the PUSCH, the bit width of the transmitted precoding matrix indicator (TPMI) is the same. That is, the DCI size is the same, so the processing load of the UE can be reduced.

[0118] Figure 4 It is a flowchart showing an example of the processing of Embodiment 0.2. Figure 4 An example of the above Method 2 is shown. When the UE receives the setting indicating that the dynamic switching of the PUSCH waveform can be performed (step S201), it receives the setting representing a specific value or a value smaller than a specific value as the value of the RRC parameter maxRank (step S202).

[0119] According to this embodiment, for the RRC parameter maxRank in the case where the PUSCH waveform can be dynamically switched, the set value can be clearly defined.

[0120] <Problem 1>

[0121] In the case where the PUSCH waveform can be dynamically switched, it is not clear how to handle DCI fields that sometimes exist (more than 1 bit) and sometimes do not exist (0 bit) according to the waveform of the PUSCH. Such DCI fields are, for example, PTRS-DMRS association and DMRS sequence initialization.

[0122] Figure 5 It is a diagram showing the definitions of PTRS-DMRS association and DMRS sequence initialization of the DCI field. As Figure 5 shown, in the case where CP-OFDM is applied without setting PTRS (PTRS-UplinkConfig) (transform precoder is disabled), in the case of applying DFTS-OFDM (if transform precoder is enabled), or in the case of maxRank = 1, the DMRS sequence initialization is 0 bit, otherwise it is 2 bits. The DMRS sequence initialization is 0 bit in the case of applying DFTS-OFDM and 1 bit in the case of applying CP-OFDM.

[0123] <First Embodiment>

[0124] In the case where the PUSCH waveform can be dynamically switched and a specific waveform is indicated for the PUSCH, the UE can also process (assume) specific fields of the scheduling DCI of the PUSCH based on specific rules.

[0125] Specific fields of the DCI can also be at least one of the following: the DMRS sequence initialization field of the Demodulation Reference Signal (DMRS), and the Phase Tracking Reference Signal (PTRS)-DMRS association field.

[0126] The specific rule can also be that the UE ignores the specific field of the DCI.

[0127] A specific waveform can also be DFT-s-OFDM or CP-OFDM.

[0128] For example, when the UE receives DCI and is capable of dynamically switching the PUSCH waveform and the PUSCH is indicated with DFT-s-OFDM, the UE ignores at least one of the DMRS sequence initialization field and the PTRS-DMRS association field of the DCI.

[0129] Not limited to the above example, when the DMRS sequence initialization field or the PTRS-DMRS association field that satisfies Figure 5 becomes 0 bits, the UE can also ignore this field. Thereby, the processing load of the UE can be reduced.

[0130] In the first embodiment, when the PUSCH waveform is dynamically switched, regardless of the exact waveform used by the UE, the number of bits of each DCI field / the overall size of the DCI can also follow the rules in the case of CP-OFDM. Or, the number of bits of each DCI field / the overall size of the DCI may not follow the rules in the case of CP-OFDM.

[0131] <Problem 2>

[0132] As described above (in the FDRA type), RA of type 0 cannot be used for DFT-s-OFDM. Therefore, when the PUSCH waveform is switched to DFT-s-OFDM, type 1 or type 2 needs to be used. For example, it is preferable that the RRC parameter indicating the PUSCH waveform always corresponds to the setting / indication of the FDRA type. However, when the PUSCH waveform is dynamically switched, the setting of the useInterlacePUCCH-PUSCH for FDRA is not clear.

[0133] <Second Embodiment>

[0134] When the PUSCH waveform can be dynamically switched and a specific waveform is indicated for the PUSCH, the UE can also receive specific fields of the DCI and specific RRC parameters corresponding to the scheduling of the PUSCH (it is also conceivable to receive the specific fields of the DCI and the specific RRC parameters) based on specific rules. The UE can also control the PUSCH transmission based on the received specific fields of the DCI and the specific RRC parameters.

[0135] A specific field of the DCI may also be an FDRA or a frequency hopping flag.

[0136] A specific RRC parameter may also be a resource allocation or an indication of the interleaved use of PUCCH and PUSCH (useInterlacePUCCH-PUSCH).

[0137] A specific waveform may also be DFT-s-OFDM or CP-OFDM.

[0138] A specific rule may also be that resourceAllocation is one of resourceAllcationType1 or dynamicSwitch. When resourceAllocation is dynamicSwitch, the most significant bit (MSB) of the FDRA must be "1". That is, type 1 of the FDRA must be indicated. This specific rule can be applied when useInterlacePUCCH-PUSCH is not set.

[0139] A specific rule may also be that resourceAllocation is resourceAllcationType1.

[0140] A specific rule may also be that the frequency hopping flag is determined based on at least one of resourceAllocation and FDRA according to the above specific rule.

[0141] A specific rule may also be that useInterlacePUCCH-PUSCH (for the interleaved use of PUCCH and PUSCH) is set to enabled (for the interleaved use of PUCCH and PUSCH).

[0142] [Specific example]

[0143] For example, when the PUSCH waveform can be dynamically switched and the PUSCH is indicated as DFT-s-OFDM, the UE may also receive (it is also conceivable to receive) setting information (RRC parameter) indicating dynamic switching (dynamicSwitch) as the resource allocation and indication information (DCI) of type 1 as the FDRA. The UE may also control the PUSCH transmission based on the setting information and the indication information.

[0144] For example, in a case where the PUSCH waveform can be dynamically switched and DFT-s-OFDM is indicated for the PUSCH, the UE may also receive (it is also conceivable to receive) setting information (RRC parameter) representing type 1 (resourceAllcationType1) as resource allocation. The UE may also control PUSCH transmission based on this setting information.

[0145] For example, in a case where the PUSCH waveform can be dynamically switched and DFT-s-OFDM is indicated for the PUSCH, the UE may also receive (it is also conceivable to receive) setting information indicating that useInterlacePUCCH-PUSCH (use of interleaving for PUCCH and PUSCH) is enabled. The UE may also control PUSCH transmission based on this setting information.

[0146] Figure 6 FIG. is an example showing a setting mode of useInterlacePUCCH-PUSCH, resource allocation, and RA type (RA type). In a case where dynamic waveform switching is possible, for Figure 6 the setting mode shown, the following (1) and (2) may also be applied.

[0147] (1) It may be that when the default value of transformPrecoder is invalid (CP-OFDM is indicated / used), the UE can expect any mode, but when it is valid (DFT-s-OFDM is indicated / used), modes 1-1 and 1-3 cannot be applied.

[0148] (2) It may be that when the default value of transformPrecoder is valid, the UE can expect to apply modes other than mode 1-1 and 1-3 of DCI representing type 0, but when CP-OFDM is indicated / used, it expects any mode.

[0149] The processing of this embodiment may also be applied regardless of the waveform indicated for the PUSCH. That is, in a case where the PUSCH waveform can be dynamically switched, the UE may also control the above specific fields of DCI corresponding to the scheduling of the PUSCH and the above specific RRC parameters based on the above specific rules.

[0150] According to this embodiment, even when the PUSCH waveform is dynamically switched, it is possible to avoid situations that result in errors (for example, when DFT-s-OFDM is applied, FDRA of type 0 is set).

[0151] <Problem 3>

[0152] When the PUSCH waveform can be dynamically switched, the types of PUSCH that can be applied are not clear. For example, it is not clear whether Msg3 / msgA (msg3-TransformPrecoder / msgA-TransformPrecoder) can be applied as the PUSCH. In addition, it is not clear whether CG-PUSCH (transformPrecoder of ConfiguredGrantConfig) can be applied as the PUSCH. Moreover, when supporting dynamic switching of the PUSCH waveform for these PUSCHs, it is not clear what kind of processing should be performed.

[0153] <Embodiment 3>

[0154] The UE may also apply dynamic switching of the PUSCH waveform only to a specific type of PUSCH. That is, when the UE receives a setting indicating dynamic switching of the PUSCH waveform, it may also perform control to dynamically switch only a specific type of PUSCH based on DCI / MAC CE. The specific type of PUSCH may be, for example, at least one of the following (1) to (4).

[0155] (1) DCI grant (DCIGrant (DG))-PUSCH (PUSCH scheduled by DCI).

[0156] (2) Type 1 configured grant (CG)-PUSCH (PUSCH transmission configured by higher layer signaling).

[0157] (3) Type 2 CG-PUSCH (PUSCH transmission configured by higher layer signaling and activated / deactivated by DCI).

[0158] (4) PUSCH (Message 3 PUSCH or Message A PUSCH) scheduled via a Random Access Response (RAR). The RAR can be a RAR for contention-based random access (Contention based Random Access (CBRA)) or a RAR for contention-free random access (Contention-Free Random Access (CFRA)). For example, in CFRA, the base station (gNB) knows the UE and its channel state, and thus can appropriately adjust the waveform.

[0159] Figure 7 It is a flowchart showing an example of the processing of Embodiment 3. When the UE receives a setting indicating that dynamic switching of the PUSCH waveform is possible (step S301), it controls to dynamically switch only the waveform of a specific type of PUSCH based on DCI / MAC CE (step S302).

[0160] <Embodiment 4.1>

[0161] Alternatively, the dynamic switching of the CG-PUSCH (PUSCH transmission set by higher layer signaling) waveform of Application Type 1 may support at least one of the following methods (1-1) to (1-4). As specific methods for the following (1-1) to (1-4), the methods in the above (dynamic switching of deactivation and activation of the transform precoder) may also be applied.

[0162] (1-1) The UE may also receive an explicit DCI-based indication (explicit signaling) indicating the validity / invalidity of the transformPrecoder (DFT-s-OFDM / CP-OFDM).

[0163] (1-2) The UE may also receive an implicit DCI-based indication (implicit signaling) indicating the validity / invalidity of the transformPrecoder (DFT-s-OFDM / CP-OFDM).

[0164] (1-3) The UE may also receive an explicit MAC CE-based indication (explicit signaling) indicating the validity / invalidity of the transformPrecoder (DFT-s-OFDM / CP-OFDM).

[0165] (1-4) The UE may also receive an implicit MAC CE-based indication (implicit signaling) indicating the validity / invalidity of the transformPrecoder (DFT-s-OFDM / CP-OFDM).

[0166] The methods of (1-1) to (1-4) can also be applied to CG-PUSCH of type 1 separately from other types of PUSCH (CG-PUSCH of type 2, DG-PUSCH). Alternatively, as the methods of (1-1) to (1-4), the same methods as those for other types of PUSCH can also be applied to CG-PUSCH of type 1.

[0167] In the conventional CG-PUSCH of type 1, DCI is not used in scheduling. Therefore, when applying the above (1-1) and (1-2), it is preferable to newly define DCI. For example, as the DCI of the above (1-1) and (1-2), any one of the following (2-1) and (2-2) can also be applied.

[0168] (2-1) The DCI for scheduling unicast data of UL / DL can also be applied. Additionally, in fact, the UL / DL-SCH scheduled by the DCI may not exist.

[0169] (2-2) The DCI for scheduling other than unicast data can also be applied. For example, this DCI can also be applied when using group common DCI.

[0170] According to this embodiment, the processing in the case of clearly applying the dynamic switching of the CG-PUSCH waveform of type 1 can be achieved.

[0171] <Embodiment 4.2>

[0172] It is also possible to apply the dynamic switching of the CG-PUSCH waveform of type 2 (PUSCH transmission that is set by higher layer signaling and activated / deactivated by DCI), and support at least one of the methods of (1-1) to (1-4) in Embodiment 4.1.

[0173] (1-1) to (1-4) The methods can also be applied to CG-PUSCH of type 2 separately from other types of PUSCH (CG-PUSCH of type 1, DG-PUSCH). Alternatively, as the methods of (1-1) to (1-4), the same methods as those for other types of PUSCH can also be applied to CG-PUSCH of type 2.

[0174] In the conventional CG-PUSCH of type 2, the DCI for activation / deactivation is used, so this DCI can also be reused. Specifically, as the DCI of the above (1-1) and (1-2), any one of the following (2-1) and (2-2) can also be applied.

[0175] (2-1) The DCI for scheduling unicast data for UL / DL can also be applied. Additionally, the UL / DL-SCH actually scheduled by the DCI may not exist. For example, the DCI for activating / deactivating type 2 CG-PUSCH can also be applied.

[0176] (2-2) The DCI for scheduling other than unicast data can also be applied. For example, this DCI can also be applied when using group common DCI.

[0177] According to this embodiment, the processing in the case of clearly applying the dynamic switching of type 2 CG-PUSCH waveforms can be clarified.

[0178] <Embodiment 5>

[0179] It may also be to apply the dynamic switching of the message 3 / message A PUSCH (PUSCH scheduled by random access response (RAR)) waveform and support at least one of the methods (1-1) to (1-4) of Embodiment 4.1. Alternatively, the following (1-5) can also be applied.

[0180] (1-5) The UE can also receive an explicit / implicit indication based on the RAR indicating the validity / invalidity of the transformPrecoder (DFT-s-OFDM / CP-OFDM).

[0181] The methods (1-1) to (1-5) can also be applied to the message 3 / message A PUSCH separately from other types of PUSCH (type 1 / type 2 CG-PUSCH, DG-PUSCH). Alternatively, as the methods (1-1) to (1-5), the same methods as those for other types of PUSCH can also be applied to the message 3 / message A PUSCH.

[0182] In the conventional message 3 / message A PUSCH, the DCI for activation / deactivation is used, so this DCI can also be reused. Specifically, as the DCI of the above (1-1) and (1-2), any one of the following (2-1) and (2-2) can be applied.

[0183] (2-1) The DCI for scheduling unicast data for UL / DL can also be applied. Additionally, the UL / DL-SCH actually scheduled by the DCI may not exist. For example, the DCI can also be DCI 1_0 with a cyclic redundancy check (CRC) scrambled by a random access radio network temporary identifier (RNTI) or a message B RNTI.

[0184] (2-2) can also apply DCI for scheduling other than unicast data. For example, this DCI can also be applied when using group common DCI.

[0185] For the dynamic waveform switching of Message 3 / Message APUSCH, at least one of the following (3-1) and (3-2) related to the RAR-based indication can also be supported. The UE can also dynamically switch the waveform of Message 3 PUSCH or Message APUSCH based on at least one of the MAC sub-header or MAC payload for RAR.

[0186] (3-1) can also be that the reserved bit (R) of the MAC sub-header / MAC payload for RAR is released and used for dynamic waveform switching. For example, Figure 8 The "R" in the first octet of the MAC payload shown (i.e., next to the Timing Advance Command) can also indicate dynamic waveform switching.

[0187] (3-2) can also be implicitly indicated based on Figure 9 the existing RAR grant field (UL grant) shown. For example, when the Modulation and Coding Scheme (MCS) in the UL grant represents a specific MCS, the validity / invalidity of transformPrecoder for Message 3 / Message APUSCH can also be set. For example, when the value corresponding to the TPC command for Message 3 PUSCH in the UL grant ( Figure 9 、 Figure 10 ) is a specific value, or greater than / less than a specific threshold, the validity / invalidity of transformPrecoder for Message 3 / Message APUSCH can also be set.

[0188] The backoff parameter value corresponding to the Backoff Indicator (BI) field included in the MAC sub-header for RAR ( Figure 11When it is a specific value, or when it is greater than / less than a specific threshold, the validity / invalidity of the transformPrecoder can also be set for Message 3 / Message A PUSCH. Alternatively, when the Extension (E) field, Type (T) field, and Random Access Preamble IDentifier (RAPID) field included in the MAC sub-header for RAR are specific values, the validity / invalidity of the transformPrecoder can also be set for Message 3 / Message A PUSCH.

[0189] This embodiment can also be applied when specific conditions are met. The specific conditions can also be that the PRACH triggering the RAR is transmitted in a specific RA resource based on the RACH resource partition structure.

[0190] According to this embodiment, it is possible to clarify the processing in the case of applying the dynamic switching of the Message 3 / Message A PUSCH waveform. In addition, for the dynamic waveform switching of Message 3 / Message A PUSCH, since the existing MAC sub-header / payload can be used when using the RAR-based indication, an increase in communication overhead can be suppressed.

[0191] <Supplement>

[0192] [Notification of Information to UE]

[0193] The notification of any information from the above embodiment (from the Network (NW) (e.g., Base Station (BS))) to the UE (in other words, the reception of any information from the BS by the UE) can also be performed using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), specific signals / channels (e.g., PDCCH, PDSCH, reference signals), or a combination thereof.

[0194] When the above notification is performed through the MAC CE, the MAC CE can also be identified by being included in the MAC sub-header with a new Logical Channel ID (LCID) not specified in the existing standard.

[0195] In the case where the above notification is performed via DCI, the above notification can also be performed by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used in scrambling of Cyclic Redundancy Check (CRC) bits assigned to the DCI, the format of the DCI, etc.

[0196] In addition, the notification of any information to the UE in the above embodiments can also be performed periodically, semi - persistently, or aperiodically.

[0197] [Notification of information from UE]

[0198] The notification of any information from the UE (to the NW) in the above embodiments (in other words, the transmission / reporting of any information from the UE to the BS) can also be performed using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE), specific signals / channels (e.g., PUCCH, PUSCH, PRACH, reference signals), or a combination thereof.

[0199] In the case where the above notification is performed via MAC CE, the MAC CE can also be identified by being included in the MAC sub - header with a new LCID not specified in the existing standards.

[0200] In the case where the above notification is performed via UCI, the above notification can also be sent using PUCCH or PUSCH.

[0201] In addition, the notification of any information from the UE in the above embodiments can also be performed periodically, semi - persistently, or aperiodically.

[0202] [Application of each embodiment]

[0203] At least one of the above embodiments can also be applied when specific conditions are met. The specific conditions can either be specified in the standard or be notified to the UE / BS using higher layer signaling / physical layer signaling.

[0204] At least one of the above embodiments can also be applied only to UEs that have reported a specific UE capability or support that specific UE capability.

[0205] The specific UE capability can also represent at least one of the following:

[0206] · Support for specific processing / operations / control / information for at least one of the above embodiments.

[0207] In addition, the above-mentioned specific UE capabilities can be capabilities applied across all frequencies (commonly regardless of the frequency), or capabilities for each frequency (e.g., one or a combination of a cell, a frequency band, a frequency band combination, a BWP, a component carrier, etc.), or capabilities for each frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or capabilities for each SubCarrier Spacing (SCS), or can also be capabilities for each Feature Set (FS) or each Feature Set PerComponent-carrier (FSPC).

[0208] In addition, the above-mentioned specific UE capabilities can be capabilities applied across all duplex modes (commonly regardless of the duplex mode), or capabilities for each duplex mode (e.g., Time Division Duplex (TDD), Frequency Division Duplex (FDD)).

[0209] In addition, at least one of the above-mentioned embodiments can also be applied when the UE is set / activated / triggered by high-layer signaling / physical-layer signaling with specific information associated with the above-mentioned embodiments (or operates the above-mentioned embodiments). For example, the specific information can also be any RRC parameters, etc., for a specific version (e.g., Rel.18 / 19).

[0210] When the UE does not support at least one of the above-mentioned specific UE capabilities or has not been set with the above-mentioned specific information, it can also apply operations such as Rel.15 / 16.

[0211] (Supplementary Note)

[0212] Regarding an embodiment of the present disclosure, the following invention is noted.

[0213] [Supplementary Note 1]

[0214] A terminal, comprising:

[0215] a receiving unit that, when capable of dynamically switching the Physical Uplink Shared Channel (PUSCH) waveform, receives the setting of a transform precoder with an RRC parameter set to be valid or invalid, and the setting of a maximum rank set to a specific value or a value smaller than the specific value; and

[0216] a control unit that controls the transmission of the PUSCH.

[0217] [Supplementary Note 2]

[0218] The terminal as described in Supplementary Note 1, wherein,

[0219] The transform precoder is set to be effective.

[0220] [Supplementary Note 3]

[0221] The terminal as described in Supplementary Note 1, wherein,

[0222] The transform precoder is set to be ineffective.

[0223] [Supplementary Note 4]

[0224] The terminal as described in any one of Supplementary Notes 1 to 3, wherein,

[0225] The maximum rank is set to 1.

[0226] Regarding an embodiment of the present disclosure, the following invention is further noted.

[0227] [Supplementary Note 1]

[0228] A terminal, having:

[0229] A receiving unit that receives downlink control information (DCI); and

[0230] A control unit that, in a case where a physical uplink shared channel (PUSCH) waveform can be dynamically switched and the PUSCH is indicated with a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform, ignores at least one of a demodulation reference signal (DMRS) sequence initialization field and a phase tracking reference signal (PTRS)-DMRS association field of the DCI.

[0231] [Supplementary Note 2]

[0232] The terminal as described in Supplementary Note 1, wherein,

[0233] In a case where the PUSCH waveform can be dynamically switched and the PUSCH is indicated with the DFT-s-OFDM waveform, the receiving unit receives setting information indicating dynamic switching as a resource allocation and receives indication information of type 1 as a frequency domain resource allocation (FDRA) through the DCI,

[0234] The control unit controls transmission of the PUSCH based on the setting information and the indication information.

[0235] [Supplementary Note 3]

[0236] The terminal as described in Supplementary Note 1, wherein,

[0237] When the PUSCH waveform can be dynamically switched and the DFT-s-OFDM waveform is indicated for the PUSCH, the receiving unit receives setting information indicating type 1 as resource allocation.

[0238] The control unit controls the transmission of the PUSCH based on the setting information.

[0239] [Supplementary Note 4]

[0240] The terminal according to any one of Supplementary Notes 1 to 3, wherein

[0241] When the PUSCH waveform can be dynamically switched and the DFT-s-OFDM waveform is indicated for the PUSCH, the receiving unit receives setting information indicating that the use of interleaving for the PUSCH is effective.

[0242] The control unit controls the transmission of the PUSCH based on the setting information.

[0243] (Wireless communication system)

[0244] Hereinafter, the structure of a wireless communication system according to an embodiment of the present disclosure will be described. In this wireless communication system, any one or a combination of the above-described wireless communication methods according to the respective embodiments of the present disclosure is used for communication.

[0245] Figure 12 FIG. is an example showing a schematic structure of a wireless communication system according to an embodiment. The wireless communication system 1 (which may also be simply referred to as system 1) may be a system that realizes communication by using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), 5th generation mobile communication system New Radio (5GNR), or the like.

[0246] In addition, the wireless communication system 1 may also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple Radio Access Technologies (RATs). MR-DC may also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and so on.

[0247] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the Master Node (MN), and the base station (gNB) of NR is the Secondary Node (SN). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0248] The wireless communication system 1 may also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity where both the MN and the SN are base stations (gNBs) of NR (NR-NR Dual Connectivity (NN-DC))).

[0249] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage area, and a base station 12 (12a - 12c) that is configured within the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located within at least one cell. The configuration, quantity, etc. of each cell and the user terminal 20 are not limited to the manner shown in the figure. Hereinafter, without distinguishing between the base stations 11 and 12, they are collectively referred to as the base station 10.

[0250] The user terminal 20 may also be connected to at least one of the multiple base stations 10. The user terminal 20 may also utilize at least one of Carrier Aggregation (CA) and Dual Connectivity (DC) that uses multiple Component Carriers (CCs).

[0251] Each CC may also be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may also be a frequency band below 6 GHz (sub-6 GHz), and FR2 may also be a frequency band higher than 24 GHz (above-24 GHz). Additionally, the frequency bands, definitions, etc. of FR1 and FR2 are not limited to these. For example, FR1 may also correspond to a frequency band higher than FR2.

[0252] In addition, the user terminal 20 may also communicate in each CC using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD).

[0253] Multiple base stations 10 may also be connected by wire (e.g., optical fiber based on the Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 corresponding to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may also be referred to as an IAB node.

[0254] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may, for example, also include at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), etc.

[0255] The core network 30 may also include, for example, network functions (NF) such as User Plane Function (UPF), Access and Mobility management Function (AMF), Session Management Function (SMF), Unified Data Management (UDM), Application Function (AF), Data Network (DN), Location Management Function (LMF), and Maintenance Operation Management (Operation, Administration and Maintenance (Management) (OAM)). Additionally, multiple functions may be provided by a single network node. Moreover, communication with an external network (such as the Internet) may be carried out via the DN.

[0256] The user terminal 20 may also be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0257] In the wireless communication system 1, a wireless access method based on Orthogonal Frequency Division Multiplexing (OFDM) may also be utilized. For example, in at least one of the Downlink (DL) and the Uplink (UL), Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), etc. may be used.

[0258] The wireless access method can also be referred to as a waveform. Additionally, in the wireless communication system 1, in the UL and DL wireless access methods, other wireless access methods (e.g., other single-carrier transmission methods, other multi-carrier transmission methods) can also be used.

[0259] In the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc., which are shared among the respective user terminals 20, can also be used as downlink channels.

[0260] Furthermore, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc., which are shared among the respective user terminals 20, can also be used as uplink channels.

[0261] User data, high-layer control information, System Information Block (SIB), etc. are transmitted through the PDSCH. Through the PUSCH, user data, high-layer control information, etc. can also be transmitted. Additionally, the Master Information Block (MIB) can also be transmitted through the PBCH.

[0262] Low-layer control information can also be transmitted through the PDCCH. The low-layer control information can also include, for example, downlink control information (Downlink Control Information (DCI)), and this downlink control information includes scheduling information for at least one of the PDSCH and the PUSCH.

[0263] In addition, the DCI that schedules the PDSCH can also be referred to as DL allocation, DL DCI, etc., and the DCI that schedules the PUSCH can also be referred to as UL grant, UL DCI, etc. Additionally, the PDSCH can also be rewritten as DL data, and the PUSCH can also be rewritten as UL data.

[0264] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be utilized. The CORESET corresponds to the resource for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. One CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a certain search space based on the search space setting.

[0265] One search space can also correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces can also be referred to as a search space set. Additionally, in the present disclosure, terms such as "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting", etc. can also be rewritten with each other.

[0266] Through PUCCH, uplink control information (Uplink Control Information (UCI)) including at least one of channel state information (Channel State Information (CSI)), delivery confirmation information (e.g., which can also be referred to as Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (Scheduling Request (SR)) can also be transmitted. Through PRACH, a random access preamble for establishing a connection with the cell can also be transmitted.

[0267] In addition, in the present disclosure, the downlink, uplink, etc. can also be expressed without "link". Furthermore, it can also be expressed without "Physical" at the beginning of various channels.

[0268] In the wireless communication system 1, it is also possible to transmit a synchronization signal (SS), a downlink reference signal (DL-RS), etc. In the wireless communication system 1, as the DL-RS, it is also possible to transmit a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc.

[0269] The synchronization signal may also be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as an SS / PBCH block, an SS block (SS Block (SSB)), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0270] Furthermore, in the wireless communication system 1, as an uplink reference signal (UL-RS), it is also possible to transmit a reference signal for measurement (sounding reference signal (SRS)), a demodulation reference signal (DMRS), etc. In addition, DMRS may also be referred to as a UE-specific reference signal.

[0271] (Base station)

[0272] Figure 13FIG. 0 is a diagram showing an example of the structure of a base station according to an embodiment. The base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission path interface (transmission line interface) 140. In addition, one or more of the control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140 may be provided respectively.

[0273] In addition, in this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and it can also be assumed that the base station 10 also has other functional blocks required for wireless communication. A part of the processing of each unit described below may also be omitted.

[0274] The control unit 110 implements the overall control of the base station 10. The control unit 110 can be composed of a controller, a control circuit, etc. that can be explained based on the common knowledge in the technical field related to the present disclosure.

[0275] The control unit 110 may also control the generation, scheduling (e.g., resource allocation, mapping), etc. of signals. The control unit 110 may also control the transmission / reception, measurement, etc. using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequence, etc. to be transmitted as signals, and forward them to the transmission / reception unit 120. The control unit 110 may also perform call processing (setting, releasing, etc.) of communication channels, state management of the base station 10, management of radio resources, etc.

[0276] The transmission / reception unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transmission / reception unit 120 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, etc. that can be explained based on the common knowledge in the technical field related to the present disclosure.

[0277] The transmission / reception unit 120 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit. The transmission unit may be composed of the transmission processing unit 1211 and the RF unit 122. The reception unit may be composed of the reception processing unit 1212, the RF unit 122, and the measurement unit 123.

[0278] The transmit-receive antenna 130 can be constituted by an antenna that can be described based on common knowledge in the technical field related to the present disclosure, such as an array antenna, etc.

[0279] The transmit-receive unit 120 can also transmit the above-mentioned downlink channels, synchronization signals, downlink reference signals, etc. The transmit-receive unit 120 can also receive the above-mentioned uplink channels, uplink reference signals, etc.

[0280] The transmit-receive unit 120 can also use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc. to form at least one of a transmit beam and a receive beam.

[0281] The transmit-receive unit 120 (transmit processing unit 1211) can also, for example, perform processing of the Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0282] Control (RLC)) layer processing, Medium Access Control (MAC)) layer processing (e.g., HARQ retransmission control), etc., to generate a bit string to be transmitted.

[0283] For the bit string to be transmitted, the transmit-receive unit 120 (transmit processing unit 1211) can also perform channel coding (which may include error correction coding), modulation, mapping, filter processing (filtering process), Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, digital-to-analog conversion, etc. of transmit processing, and output a baseband signal.

[0284] For the bit string to be transmitted, the transmit-receive unit 120 (transmit processing unit 1211) can also perform channel coding (which may include error correction coding), modulation, mapping, filter processing (filtering process), Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, digital-to-analog conversion, etc. of transmit processing, and output a baseband signal.

[0285] The transmit-receive unit 120 (RF unit 122) can also modulate the baseband signal to a radio frequency band, perform filter processing, amplification, etc., and transmit the radio frequency band signal via the transmit-receive antenna 130.

[0286] On the other hand, the transmit-receive unit 120 (RF unit 122) can also amplify, perform filter processing, demodulate to a baseband signal, etc. on the radio frequency band signal received through the transmit-receive antenna 130.

[0287] The transmission / reception unit 120 (reception processing unit 1212) may also apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filter processing, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data and the like.

[0288] The transmission / reception unit 120 (measurement unit 123) may also perform measurements related to the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may also perform measurements on received power (e.g., Reference Signal Received Power (RSRP)), reception quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0289] The transmission path interface 140 may also transmit and receive signals (backhaul signaling) between the device included in the core network 30 (e.g., a network node providing NF), other base stations 10, etc., and may also acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0290] In addition, the transmission unit and reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140.

[0291] In the case where the physical uplink shared channel (PUSCH) waveform can be dynamically switched, the transmission / reception unit 120 may also transmit the setting of a transform precoder for which RRC parameters are set to be valid or invalid, and the setting of a maximum rank that is set to a specific value or a value smaller than the specific value.

[0292] The control unit 110 may also control the reception of the PUSCH.

[0293] The transmission / reception unit 120 may also transmit downlink control information (DCI).

[0294] In the case where the physical uplink shared channel (PUSCH) waveform can be dynamically switched and the PUSCH is indicated with a discrete Fourier transform spread OFDM (DFT-s-OFDM) waveform, the control unit 110 may also assume that at least one of a demodulation reference signal (DMRS) sequence initialization field and a phase tracking reference signal (PTRS)-DMRS association field of the DCI is ignored.

[0295] The transmission / reception unit 120 may also transmit a setting indicating that the physical uplink shared channel (PUSCH) waveform can be dynamically switched, and transmit downlink control information (DCI) and a media access control control element (MAC CE).

[0296] The control unit 110 may also control the reception of a specific type of PUSCH that is dynamically switched based on at least one of the DCI and the MAC CE.

[0297] (User Equipment)

[0298] Figure 14 is a diagram showing an example of the structure of a user equipment according to an embodiment. The user equipment 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, one or more of the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may be provided respectively.

[0299] In addition, in this example, mainly the functional blocks of the characteristic parts in this embodiment are shown, and it may be assumed that the user equipment 20 also has other functional blocks required for wireless communication. A part of the processing of each unit described below may also be omitted.

[0300] The control unit 210 implements overall control of the user equipment 20. The control unit 210 can be constituted by a controller, a control circuit, etc. that can be described based on common knowledge in the technical field related to the present disclosure.

[0301] The control unit 210 can also control the generation, mapping, etc. of signals. The control unit 210 can also control the transmission / reception, measurement, etc. using the transmission / reception unit 220 and the transmission / reception antenna 230. The control unit 210 can also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission / reception unit 220.

[0302] The transmission / reception unit 220 may also include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may also include a transmission processing unit 2211 and a reception processing unit 2212. The transmission / reception unit 220 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, etc. described based on the common knowledge in the technical field related to the present disclosure.

[0303] The transmission / reception unit 220 can be configured as an integrated transmission / reception unit, or can be composed of a transmission unit and a reception unit. The transmission unit may also be composed of the transmission processing unit 2211 and the RF unit 222. The reception unit may also be composed of the reception processing unit 2212, the RF unit 222, and the measurement unit 223.

[0304] The transmission / reception antenna 230 can be composed of an antenna described based on the common knowledge in the technical field related to the present disclosure, such as an array antenna, etc.

[0305] The transmission / reception unit 220 can also receive the above-mentioned downlink channels, synchronization signals, downlink reference signals, etc. The transmission / reception unit 220 can also transmit the above-mentioned uplink channels, uplink reference signals, etc.

[0306] The transmission / reception unit 220 can also use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc. to form at least one of a transmission beam and a reception beam.

[0307] The transmission / reception unit 220 (transmission processing unit 2211) can also perform, for example, PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0308] The transmission / reception unit 220 (transmission processing unit 2211) can also perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filter processing, DFT processing (if necessary), IFFT processing, precoding, digital-to-analog conversion, etc. on the bit string to be transmitted, and output a baseband signal.

[0309] In addition, regarding whether to apply DFT processing, it can also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when the transform precoding is effective (enabled), the transmission / reception unit 220 (transmission processing unit 2211) can also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using the DFT-s-OFDM waveform. In the case where it is not like that, the transmission / reception unit 220 (transmission processing unit 2211) can also not perform DFT processing as the above-mentioned transmission processing.

[0310] The transmission / reception unit 220 (RF unit 222) can also perform modulation to the radio frequency band, filter processing, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmission / reception antenna 230.

[0311] On the other hand, the transmission / reception unit 220 (RF unit 222) can also perform amplification, filter processing, demodulation to the baseband signal, etc. on the radio frequency band signal received through the transmission / reception antenna 230.

[0312] The transmission / reception unit 220 (reception processing unit 2212) can also apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filter processing, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, etc. to the obtained baseband signal, and obtain user data, etc.

[0313] The transmission / reception unit 220 (measurement unit 223) can also perform measurements related to the received signal. For example, the measurement unit 223 can perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 can also measure the received power (e.g., RSRP), reception quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement result can also be output to the control unit 210.

[0314] In addition, the transmission unit and reception unit of the user terminal 20 in the present disclosure can also be constituted by at least one of the transmission / reception unit 220 and the transmission / reception antenna 230.

[0315] In the case where the physical uplink shared channel (PUSCH) waveform can be dynamically switched, the transmission / reception unit 220 can also receive the setting of the transform precoder with the RRC parameter set to be valid or invalid, and the setting of the maximum rank set to a specific value or a value smaller than the specific value.

[0316] The control unit 210 may also control the transmission of the PUSCH. The transform precoder may also be set to be valid. The transform precoder may also be set to be invalid. The maximum rank may also be set to 1.

[0317] The transmission / reception unit 220 may also receive downlink control information (DCI).

[0318] In the case where the physical uplink shared channel (PUSCH) waveform can be dynamically switched and the PUSCH is indicated with a discrete Fourier transform spread OFDM (DFT-s-OFDM) waveform, the control unit 210 may also ignore at least one of the demodulation reference signal (DMRS) sequence initialization field and the phase tracking reference signal (PTRS)-DMRS association field of the DCI.

[0319] In the case where the PUSCH waveform can be dynamically switched and the PUSCH is indicated with the DFT-s-OFDM waveform, the transmission / reception unit 220 may also receive setting information indicating dynamic switching as a resource allocation, and receive indication information of type 1 as a frequency domain resource allocation (FDRA) through the DCI. The control unit 210 may also control the transmission of the PUSCH based on the setting information and the indication information.

[0320] In the case where the PUSCH waveform can be dynamically switched and the PUSCH is indicated with the DFT-s-OFDM waveform, the transmission / reception unit 220 may also receive setting information of type 1 as a resource allocation. The control unit 210 may also control the transmission of the PUSCH based on the setting information.

[0321] In the case where the PUSCH waveform can be dynamically switched and the PUSCH is indicated with the DFT-s-OFDM waveform, the transmission / reception unit 220 may also receive setting information indicating that the use of interleaving for the PUSCH is valid. The control unit 210 may also control the transmission of the PUSCH based on the setting information.

[0322] The transmission / reception unit 220 may also receive setting information indicating that the physical uplink shared channel (PUSCH) waveform can be dynamically switched, and receive downlink control information (DCI) and a media access control control element (MAC CE).

[0323] The control unit 210 may also dynamically switch the waveform of a specific type of PUSCH based on at least one of the DCI and the MAC CE. The specific type of PUSCH may also be a type 1 Configured Grant (CG)-PUSCH or a type 2 CG-PUSCH. The specific type of PUSCH may also be a message 3 PUSCH or a message A PUSCH.

[0324] The control unit 210 may also dynamically switch the waveform of the message 3 PUSCH or the message A PUSCH based on at least one of a Media Access Control (MAC) sub-header or a MAC payload for a Random Access Response (RAR).

[0325] (Hardware Structure)

[0326] In addition, the block diagrams used in the description of the above embodiments illustrate blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. Furthermore, the implementation method of each functional block is not particularly limited. That is, each functional block may be implemented by a single device physically or logically combined, or may be implemented by two or more physically or logically separated devices directly or indirectly (e.g., by wire, wireless, etc.) connected with these multiple devices. The functional block may also be implemented by combining the above single device or the above multiple devices with software.

[0327] Here, in terms of functions, there are judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, establishment, comparison, assumption, expectation, regarded as, broadcasting, notification, communication, forwarding, configuration (setting), reconfiguration (resetting), allocation, mapping, assignment, etc., but not limited to these. For example, a functional block (structural unit) that implements a transmission function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method is not particularly limited.

[0328] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure may also function as a computer that processes the wireless communication method of the present disclosure. Figure 15FIG. 0 is a diagram showing an example of the hardware configurations of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may physically be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

[0329] In addition, in the present disclosure, terms such as device, circuit, equipment, section, unit, etc. can be rewritten with each other. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured not to include some devices.

[0330] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be executed by one processor, or may be executed by two or more processors simultaneously, sequentially, or by other means. Further, the processor 1001 may also be implemented by one or more chips.

[0331] Regarding each function in the base station 10 and the user terminal 20, for example, by reading a specific software (program) into hardware such as the processor 1001 and the memory 1002, the processor 1001 performs arithmetic operations and controls communication via the communication device 1004, or controls at least one of reading and writing of data in the memory 1002 and the storage 1003, thereby realizing the functions.

[0332] The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may also be configured by a central processing unit (Central Processing Unit (CPU)) including an interface with peripheral devices, a control device, an arithmetic device, registers, and the like. For example, at least a part of the above-described control unit 110 (210), transmission / reception unit 120 (220), etc. may also be implemented by the processor 1001.

[0333] In addition, the processor 1001 reads a program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes based on them. As the program, a program that causes a computer to execute at least a part of the operations described in the above embodiment can be used. For example, the control unit 110 (210) may also be implemented by a control program stored in the memory 1002 and operating in the processor 1001, and the same can be applied to other functional blocks.

[0334] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), and other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store programs (program codes), software modules, etc. that can be executed to implement the wireless communication method according to an embodiment of the present disclosure.

[0335] The storage 1003 may also be a computer-readable recording medium, for example, composed of at least one of a flexible disc, a floppy (registered trademark) disc, an optical disc (such as a compact disc (compact disc read-only memory (CD-ROM)), etc.), a digital versatile disc, a Blu-ray (registered trademark) disc), a removable disc, a hard disk drive, a smart card, a flash device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, and other appropriate storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0336] The communication device 1004 is hardware (a transmission / reception device) for performing inter-computer communication via at least one of a wired network and a wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, etc., for example. In order to implement at least one of, for example, frequency division duplex (FDD) and time division duplex (TDD), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-described transmission / reception unit 120 (220), the transmission / reception antenna 130 (230), etc. may also be implemented by the communication device 1004. The transmission / reception unit 120 (220) may also be physically or logically separated and implemented by a transmission unit 120a (220a) and a reception unit 120b (220b).

[0337] The input device 1005 is an input device that accepts external inputs (e.g., keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that performs outputs to the outside (e.g., display, speaker, Light Emitting Diode (LED) lamp, etc.). Additionally, the input device 1005 and the output device 1006 may also be integrated (e.g., touch panel).

[0338] Furthermore, each device such as the processor 1001 and the memory 1002 is connected via a bus 1007 for communicating information. The bus 1007 may be constituted by a single bus or may be constituted by different buses between each device.

[0339] In addition, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), etc., and a part or all of each functional block may be implemented using this hardware. For example, the processor 1001 may also be implemented using at least one of these hardwares.

[0340] (Variant example)

[0341] Also, regarding the terms described in this disclosure and the terms necessary for understanding this disclosure, they may also be rewritten as terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be rewritten with each other. Additionally, a signal may also be a message. A Reference Signal can also be abbreviated as RS and may also be referred to as a Pilot, a pilot signal, etc. according to the applied standard. Furthermore, a Component Carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0342] A radio frame may also be constituted by one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may also be referred to as a subframe. Further, a subframe may also be constituted by one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) independent of numerology.

[0343] Here, the parameter set can also be communication parameters applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set can also represent 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 process performed by the transmitter-receiver in the frequency domain, specific windowing process performed by the transmitter-receiver in the time domain, etc.

[0344] In the time domain, a time slot can also be composed of one or more symbols (such as orthogonal frequency division multiplexing (OFDM) symbols, single carrier frequency division multiple access (SC-FDMA) symbols, etc.). In addition, a time slot can also be a time unit based on the parameter set.

[0345] A time slot can also contain multiple mini-slots. Each mini-slot can also be composed of one or more symbols in the time domain. In addition, a mini-slot can also be referred to as a sub-slot. A mini-slot can also be composed of a smaller number of symbols than a time slot. The PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot can also be referred to as PDSCH (PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using a mini-slot can also be referred to as PDSCH (PUSCH) mapping type B.

[0346] Radio frames, sub-frames, time slots, mini-slots, and symbols all represent time units when transmitting signals. Radio frames, sub-frames, time slots, mini-slots, and symbols can also use their respective other names. In addition, the time units such as frames, sub-frames, time slots, mini-slots, symbols, etc. in this disclosure can also be rewritten with each other.

[0347] For example, a sub-frame can also be referred to as a TTI, multiple consecutive sub-frames can also be referred to as a TTI, a time slot or a mini-slot can also be referred to as a TTI. That is, at least one of a sub-frame and a TTI can be a sub-frame (1 ms) in the existing LTE, or a period shorter than 1 ms (for example, 1 - 13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI can also not be referred to as a sub-frame, but as a time slot, a mini-slot, etc.

[0348] Here, the TTI refers to, for example, the minimum 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 in each user terminal) in units of TTI. Additionally, the definition of TTI is not limited to this.

[0349] The TTI can also be the transmission time unit for data packets (transport blocks), code blocks, codewords, etc. that have undergone channel coding, and can also serve as the processing unit for scheduling, link adaptation, etc. Additionally, when the TTI is given, the time interval (e.g., the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped can also be shorter than the TTI.

[0350] Additionally, when one time slot or one mini - time slot is referred to as the TTI, one or more TTIs (i.e., one or more time slots or one or more mini - time slots) can also be the minimum time unit for scheduling. Furthermore, the number of time slots (mini - time slot numbers) that make up the minimum time unit of this scheduling can also be controlled.

[0351] A TTI with a time length of 1 ms can also be referred to as a normal TTI (TTI in 3GPP Rel.8 - 12), standard TTI, long TTI, normal sub - frame, standard sub - frame, long sub - frame, time slot, etc. A TTI shorter than the normal TTI can also be referred to as a shortened TTI, short TTI, partial TTI (partial or fractional TTI), shortened sub - frame, short sub - frame, mini - time slot, sub - time slot, time slot, etc.

[0352] Additionally, a long TTI (e.g., normal TTI, sub - frame, etc.) can also be rewritten as a TTI with a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) can also be rewritten as a TTI with a TTI length less than that of the long TTI and 1 ms or more.

[0353] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and can also include one or more consecutive sub - carriers (subcarriers) in the frequency domain. The number of sub - carriers included in the RB can be the same regardless of the parameter set, for example, it can be 12. The number of sub - carriers included in the RB can also be determined based on the parameter set.

[0354] Furthermore, the RB can also include one or more symbols in the time domain, and can also be the length of one time slot, one mini - time slot, one sub - frame, or one TTI. One TTI, one sub - frame, etc. can also be composed of one or more resource blocks respectively.

[0355] In addition, one or more RBs may also be referred to as Physical Resource Blocks (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

[0356] Furthermore, a resource block may also be composed of one or more Resource Elements (REs). For example, one RE may also be a wireless resource region of a sub-carrier and a symbol.

[0357] A Bandwidth Part (BWP) (which may also be referred to as a partial bandwidth, etc.) may also represent a subset of consecutive common RBs (common resource blocks) used for a certain parameter set in a certain carrier. Here, the common RBs may also be determined by the indices of the RBs based on the common reference point of the carrier. A PRB may also be defined in a certain BWP and be numbered additionally within that BWP.

[0358] A BWP may also include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may also be set within one carrier.

[0359] At least one of the set BWPs may also be active, and the UE may not assume to transmit and receive specific signals / channels outside the active BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be rewritten as "BWP".

[0360] In addition, the above structures such as radio frames, sub-frames, time slots, mini time slots, and symbols are merely examples. For example, the number of sub-frames included in a radio frame, the number of time slots in each sub-frame or radio frame, the number of mini time slots included in a time slot, the symbols and the number of RBs included in a time slot or mini time slot, the number of sub-carriers included in an RB, and the number of symbols, symbol length, Cyclic Prefix (CP) length, etc. within a TTI can be changed in various ways.

[0361] Furthermore, the information, parameters, etc. described in the present disclosure may be represented by absolute values, may also be represented by relative values with respect to a specific value, and may also be represented by corresponding other information. For example, a radio resource may also be indicated by a specific index.

[0362] In the present disclosure, the names used for parameters and the like are not restrictive names in all respects. Furthermore, mathematical formulas and the like using these parameters may also be different from those explicitly disclosed in the present disclosure. Various channels (such as PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name. Therefore, the various names assigned to these various channels and information elements are not restrictive names in all respects.

[0363] The information, signals, etc. described in the present disclosure can also be represented using any one of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which may be mentioned throughout the above description, can also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0364] In addition, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0365] The information, signals, etc. input and output can be stored in a specific location (e.g., a memory), or can be managed using a management table. The information, signals, etc. input and output can be overwritten, updated, or appended. The information, signals, etc. output can also be deleted. The information, signals, etc. input can also be sent to other devices.

[0366] The notification of information is not limited to the methods / embodiments described in the present disclosure, and other methods can also be used. For example, the notification of information in the present disclosure can also be implemented by physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0367] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message. For example, it may also be an RRC connection setup (RRC

[0368] Connection Setup) message, an RRC connection reconfiguration (RRC connection re - setting (RRC

[0369] Connection Reconfiguration)) message, etc. In addition, MAC signaling may also be notified, for example, using a MAC control element (MAC CE).

[0370] In addition, the notification of specific information (e.g., the notification of "it is X") is not limited to explicit notification and may also be performed implicitly (e.g., by not performing the notification of the specific information or by the notification of other information).

[0371] The determination can be made by a value represented by one bit (0 or 1), by a true - false value (boolean value) represented by true or false, or by a numerical comparison (e.g., comparison with a specific value).

[0372] Software, whether referred to as software, firmware, middleware, micro - code, hardware description language, or by any other name, should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, sub - programs, software modules, applications, software applications, software packages, routines, sub - routines, objects, executable files, execution threads, processes, functions, etc.

[0373] In addition, software, instructions, information, etc. can also be transmitted and received via a transmission medium. For example, in the case of transmitting software from a website, server, or other remote source using at least one of wired technologies (coaxial cable, optical fiber cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technologies (infrared rays, microwaves, etc.), at least one of these wired technologies and wireless technologies is included in the definition of the transmission medium.

[0374] Terms such as "system" and "network" used in this disclosure can be used interchangeably. "Network" can also mean a device (e.g., a base station) included in the network.

[0375] In this disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", "panel", etc. can be used interchangeably.

[0376] In this disclosure, terms such as "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", etc. can be used interchangeably. There are also cases where base stations are referred to using terms such as macro cell, small cell, femto cell, pico cell, etc.

[0377] The base station can accommodate one or more (e.g., three) cells. In the case where the base station accommodates multiple cells, the overall coverage area of the base station can be divided into multiple smaller areas, and each of the smaller areas can also provide communication services through a base station subsystem (e.g., a small base station for indoor use (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the whole of the coverage area of at least one of the base station and the base station subsystem that provides communication services within this coverage range.

[0378] In the present disclosure, the base station sending information to the terminal can also be rewritten interchangeably with the base station instructing the terminal to perform control / operations based on this information.

[0379] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "user device (User Equipment (UE))", "terminal", etc. can be used interchangeably.

[0380] There are also cases where the mobile station is referred to by subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client, or several other appropriate terms.

[0381] At least one of the base station and the mobile station can also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station can also be a device mounted on a moving object, the moving object itself, etc.

[0382] The mobile body refers to a movable object with an arbitrary moving speed, and of course includes the case where the mobile body stops. The mobile body includes, for example, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected vehicles, loading shovels, bulldozers, wheel loaders, dump trucks, fork lifts, trains, buses, trolleys, rickshaws, ships (boats and other watercraft), airplanes, rockets, artificial satellites, drones, multi-rotor aircraft, quad-rotor aircraft, balloons, and objects mounted on them. In addition, it is not limited to these. Furthermore, the mobile body can also be a mobile body that autonomously travels based on an operation instruction.

[0383] The mobile body can be either a transportation means (e.g., vehicles, airplanes, etc.), or a mobile body that moves in an unmanned manner (e.g., drones, autonomous vehicles, etc.), or a robot (humanoid or non-humanoid). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station can also be an Internet of Things (IoT) device such as a sensor.

[0384] Figure 16 FIG. is an example diagram showing a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotational speed sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0385] The drive unit 41 is constituted by, for example, at least one of an engine, a motor, and a hybrid of an engine and a motor. The steering unit 42 is configured to include at least a steering wheel (also referred to as a handlebar), and based on the operation of the steering wheel operated by the user, steer at least one of the front wheels 46 and the rear wheels 47.

[0386] The electronic control unit 49 is composed of a microprocessor 61, a memory (ROM, RAM) 62, and a communication port (e.g., an input / output (IO) port) 63. Signals from various sensors 50 - 58 provided in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be referred to as an electronic control unit (Electronic Control Unit (ECU)).

[0387] As signals from various sensors 50 - 58, there are current signals from a current sensor 50 that senses the current of the motor, rotational speed signals of the front wheels 46 / rear wheels 47 obtained by a rotational speed sensor 51, air pressure signals of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 52, vehicle speed signals obtained by a vehicle speed sensor 53, acceleration signals obtained by an acceleration sensor 54, depression amount signals of the accelerator pedal 43 obtained by an accelerator pedal sensor 55, depression amount signals of the brake pedal 44 obtained by a brake pedal sensor 56, operation signals of the shift lever 45 obtained by a shift lever sensor 57, detection signals for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58, and so on.

[0388] The information service unit 59 is composed of various devices such as a vehicle navigation system, an audio system, a speaker, a display, a television, and a radio, which are used to provide (output) various information such as driving information, traffic information, and entertainment information, and one or more ECUs that control these devices. The information service unit 59 uses the information obtained from an external device via a communication module 60, etc., to provide various information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0389] The information service unit 59 may include an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accepts input from the outside, or may include an output device (e.g., a display, a speaker, an LED light, a touch panel, etc.) that performs output to the outside.

[0390] The driving assistance system unit 64 is composed of various devices such as millimeter-wave radars, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS), etc.), map information (e.g., high-precision (High Definition (HD)) maps, Autonomous Vehicle (AV) maps, etc.), gyroscope systems (e.g., inertial measurement devices (Inertial Measurement Unit (IMU)), inertial navigation devices (Inertial Navigation System (INS)), etc.), artificial intelligence (Artificial Intelligence (AI)) chips, AI processors, etc. for providing functions to prevent accidents in advance or reduce the driver's driving load, and one or more ECUs for controlling these devices. In addition, the driving assistance system unit 64 transmits and receives various information via the communication module 60 and realizes the driving assistance function or the autonomous driving function.

[0391] The communication module 60 can communicate with the microprocessor 61 and the structural elements of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 among the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axle 48, microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50 - 58 provided in the vehicle 40.

[0392] The communication module 60 can be controlled by the microprocessor 61 of the electronic control unit 49 and is a communication device capable of communicating with external devices. For example, various information is transmitted and received via wireless communication with external devices. The communication module 60 can be located either inside or outside the electronic control unit 49. The external device can also be, for example, the above-mentioned base station 10, user terminal 20, etc. In addition, the communication module 60 can also be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (and can also function as at least one of the base station 10 and user terminal 20).

[0393] The communication module 60 can also transmit, via wireless communication, at least one of the signals from the various sensors 50-58 input to the electronic control unit 49, the information obtained based on the signals, and the information based on the input from the outside (user) obtained via the information service unit 59. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. can also be referred to as input units that accept input. For example, the PUSCH transmitted through the communication module 60 may also include the information based on the above input.

[0394] The communication module 60 receives various information (traffic information, signal information, vehicle-to-vehicle information, etc.) transmitted from an external device and displays it to the information service unit 59 provided in the vehicle. The information service unit 59 can also be referred to as an output unit that outputs information (for example, based on the PDSCH received through the communication module 60 (or the data / information decoded from the PDSCH), outputs information to devices such as a display and a speaker).

[0395] In addition, the communication module 60 stores the various information received from the external device in the memory 62 that can be utilized by the microprocessor 61. The microprocessor 61 can also control the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, the various sensors 50-58, etc. provided in the vehicle 40 based on the information stored in the memory 62.

[0396] In addition, the base station in the present disclosure can also be rewritten as a user terminal. For example, for a structure in which the communication between the base station and the user terminal is rewritten as communication between multiple user terminals (for example, it can also be referred to as Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.), the various modes / embodiments of the present disclosure can also be applied. In this case, it can also be a structure in which the user terminal 20 has the functions of the above base station 10. In addition, terms such as "uplink" and "downlink" can also be rewritten as terms corresponding to inter-terminal communication (for example, "sidelink"). For example, an uplink channel, a downlink channel, etc. can also be rewritten as a sidelink channel.

[0397] Similarly, the user terminal in the present disclosure can also be rewritten as a base station. In this case, it can also be a structure in which the base station 10 has the functions of the above user terminal 20.

[0398] In the present disclosure, the operations are assumed to be performed by a base station, and sometimes also by its upper node according to circumstances. Apparently, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal can be performed by the base station, one or more network nodes other than the base station (for example, considering a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0399] Each mode / embodiment described in the present disclosure can be used alone, in combination, or switched during execution. In addition, the processing procedures, sequences, flowcharts, etc. of each mode / embodiment described in the present disclosure can also be rearranged as long as there is no contradiction. For example, for the methods described in the present disclosure, the elements of various steps are presented in the illustrated order, but are not limited to the specific order presented.

[0400] Each mode / embodiment described in the present disclosure can also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is an integer or a decimal, for example)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, next-generation systems obtained by enhancing, modifying, fabricating, or prescribing them, etc. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G) and applied.

[0401] The description "based on" used in the present disclosure, unless otherwise specified, does not mean "only based on". In other words, the description "based on" means both "only based on" and "at least based on".

[0402] Any reference to an element using terms such as "first", "second", etc. used in this disclosure does not comprehensively define the quantity or order of these elements. These terms can be used in this disclosure as a convenient method for distinguishing between more than two elements. Therefore, the reference to the first and second elements does not mean that only two elements can be adopted, or that the first element must be prior to the second element in a certain form.

[0403] The term "determining" used in this disclosure may involve various operations in some cases. For example, "determining" may also be a case where judging, calculating, computing, processing, deriving, investigating, looking up (searching, inquiring) (such as searching in a table, database, or other data structure), ascertaining, etc. are regarded as performing "determining".

[0404] In addition, "determining" may also be a case where receiving (for example, receiving information), transmitting (for example, transmitting information), input, output, accessing (for example, accessing data in a memory), etc. are regarded as performing "determining".

[0405] In addition, "determining" may also be a case where resolving, selecting, choosing, establishing, comparing, etc. are regarded as performing "determining". That is, "determining" may also be a case where some actions are regarded as performing "determining".

[0406] In addition, "determining" may also be rewritten as "assuming", "expecting", "considering", etc.

[0407] The "maximum transmit power" described in this disclosure may either mean the maximum value of the transmit power, or the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated UE maximum transmit power).

[0408] As used in this disclosure, terms such as "connected" and "coupled", or all of their variations, mean all direct or indirect connections or couplings between two or more elements, and can include the situation where there is one or more intermediate elements between the two elements that are "connected" or "coupled" to each other. The coupling or connection between elements can be physical, logical, or a combination of them. For example, "connected" can also be rewritten as "access".

[0409] In this disclosure, when two elements are connected, it is possible to consider that they are "connected" or "coupled" to each other using one or more wires, cables, printed electrical connections, etc., and as several non-limiting and non-inclusive examples, using electromagnetic energy having wavelengths in the radio frequency band, microwave region, optical (both visible and invisible) region, etc.

[0410] In this disclosure, the term "A is different from B" can also mean "A and B are different from each other". Additionally, this term can also mean "A and B are each different from C". Terms such as "separated" and "coupled" can also be interpreted in the same way as "different".

[0411] When the terms "include", "including", and their variations are used in this disclosure, these terms, like the term "comprising", are meant in an inclusive sense. Further, the term "or" used in this disclosure does not mean the exclusive or.

[0412] In this disclosure, for example, in the case where articles are added through translation such as a, an, and the in English, this disclosure can also include the case where the nouns following these articles are in the plural form.

[0413] In this disclosure, "below", "less than", "above", "more than", "equal to", etc. can also be rewritten with each other. In addition, in this disclosure, statements meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. can also be rewritten with each other without being limited to the positive, comparative, and superlative degrees. In addition, in this disclosure, statements meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. can also be rewritten as expressions with "the i-th" (i is an arbitrary integer) attached without being limited to the positive, comparative, and superlative degrees (for example, "highest" can also be rewritten with "the i-th highest").

[0414] In the present disclosure, terms such as "of", "for", "regarding", "related to", "associated with", etc. may also be rewritten with each other.

[0415] As described above, the invention related to the present disclosure has been described in detail. However, for those skilled in the art, the invention related to the present disclosure is obviously not limited to the embodiments described in the present disclosure. The invention related to the present disclosure can be implemented in the form of amendments and variations without departing from the gist and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for illustrative purposes and does not carry any restrictive meaning for the invention related to the present disclosure.

Claims

1. A terminal, comprising: a receiving unit configured to receive downlink control information (DCI); and a control unit configured to, when a physical uplink shared channel (PUSCH) waveform can be dynamically switched and the PUSCH is indicated with a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform, ignore at least one of a demodulation reference signal (DMRS) sequence initialization field and a phase tracking reference signal (PTRS)-DMRS association field of the DCI.

2. The terminal according to claim 1, wherein when the PUSCH waveform can be dynamically switched and the PUSCH is indicated with the DFT-s-OFDM waveform, the receiving unit receives setting information indicating dynamic switching as a resource allocation and receives indication information of type 1 as a frequency domain resource allocation (FDRA) through the DCI, and the control unit controls transmission of the PUSCH based on the setting information and the indication information.

3. The terminal according to claim 1, wherein when the PUSCH waveform can be dynamically switched and the PUSCH is indicated with the DFT-s-OFDM waveform, the receiving unit receives setting information of type 1 as a resource allocation, and the control unit controls transmission of the PUSCH based on the setting information.

4. The terminal according to claim 1, wherein when the PUSCH waveform can be dynamically switched and the PUSCH is indicated with the DFT-s-OFDM waveform, the receiving unit receives setting information indicating that interleaving for the PUSCH is effective, and the control unit controls transmission of the PUSCH based on the setting information.

5. A wireless communication method, which is a wireless communication method of a terminal, comprising: a step of receiving downlink control information (DCI); and a step of, when a physical uplink shared channel (PUSCH) waveform can be dynamically switched and the PUSCH is indicated with a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform, ignoring at least one of a demodulation reference signal (DMRS) sequence initialization field and a phase tracking reference signal (PTRS)-DMRS association field of the DCI.

6. A base station, comprising: a transmitting unit configured to transmit downlink control information (DCI); and a control unit configured to, when a physical uplink shared channel (PUSCH) waveform can be dynamically switched and the PUSCH is indicated with a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform, assume that at least one of a demodulation reference signal (DMRS) sequence initialization field and a phase tracking reference signal (PTRS)-DMRS association field of the DCI is ignored.

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