Terminal, wireless communication method and base station

Abstract

A terminal involved in one embodiment of the present disclosure is characterized in that it has: a receiving unit that receives first information related to a time slot format and second information related to a codeword pattern that becomes invalid in the transmission of an uplink shared channel; and a control unit that controls so that the uplink shared channel is transmitted in a time interval that is designated as UL by at least the first information and is not designated as invalid by the second information.

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 the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) is standardized for the purpose of further high-speed data rate, low latency, etc. (Non-Patent Document 1). In addition, LTE-Advanced (3GPP Rel. 10-14) is standardized for the purpose of further increasing the capacity and sophistication of LTE (Release (Rel.) 8, 9 of the Third Generation Partnership Project (3GPP)).

[0003] Successor systems of LTE (for example, also referred to as the fifth generation mobile communication system (5G), 5G+(plus), New Radio (NR), 3GPP Rel. 15 and later, etc.) are also being studied.

[0004] In the existing LTE system (e.g., 3GPP Rel.8-14), the user terminal (User Equipment (UE)) uses at least one of the UL data channel (e.g., Physical Uplink Shared Channel (PUSCH)) and the UL control channel (e.g., Physical Uplink Control Channel (PUCCH)) to send uplink control information (Uplink Control Information (UCI)).

[0005] Prior art literature

[0006] Non-patent literature

[0007] Non-patent document 1: 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall Description; Stage 2 (Release 8)”, April 2010 Summary of the invention

[0008] Problems to be solved by the invention

[0009] In 3GPP Rel.15, repeated transmission is supported in the UL data channel (e.g., PUSCH). The UE controls so that the PUSCH is transmitted over multiple time slots (e.g., K consecutive time slots) based on the repetition factor K set from the network (e.g., base station). That is, in the case of repeated transmission, each PUSCH is transmitted in a different time slot (e.g., time slot unit).

[0010] On the other hand, in Rel. 16 and later, when repeatedly transmitting PUSCH, multiple PUSCH transmissions are being studied in one slot. That is, each PUSCH is transmitted in a unit shorter than a slot (for example, a subslot unit or a minislot unit).

[0011] In this case, it is also assumed that the time slot contains codewords (e.g., DL codewords, etc.) that cannot be used in PUSCH transmission. Therefore, in addition to the information about the time slot format indicating the transmission direction of each codeword, information about the codewords (or, codeword patterns) that cannot be used in PUSCH transmission is also being studied.

[0012] However, when information on the slot format and information on the invalid symbol pattern are notified, how to control UL transmission of the PUSCH and the like has not yet been fully studied.

[0013] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately control UL transmission even when an invalid symbol pattern is notified to the terminal.

[0014] Solutions to Solve Problems

[0015] A terminal involved in one embodiment of the present disclosure is characterized in that it has: a receiving unit that receives first information related to a time slot format and second information related to a codeword pattern that becomes invalid in the transmission of an uplink shared channel; and a control unit that controls so that the uplink shared channel is transmitted in a time interval that is designated as UL by at least the first information and is not designated as invalid by the second information.

[0016] Effects of the Invention

[0017] According to one aspect of the present disclosure, UL transmission can be appropriately controlled even when an invalid symbol pattern is notified to a terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A as well as Figure 1B This is a diagram showing an example of repeated transmission of the PUSCH.

[0019] Figure 2 This is a diagram showing another example of repeated transmission of the PUSCH.

[0020] Figure 3A as well as Figure 3B This is a diagram showing an example of invalid symbol pattern information and actual transmission control.

[0021] Figure 4A as well as Figure 4B This is a diagram showing an example in which a plurality of setting permissions are set.

[0022] Figure 5 It is a diagram showing an example of UL transmission control in this embodiment.

[0023] Figure 6 It is a diagram showing another example of UL transmission control in this embodiment.

[0024] Figure 7 It is a diagram showing another example of UL transmission control in this embodiment.

[0025] Figure 8 It is a diagram showing another example of UL transmission control in this embodiment.

[0026] Fig. 9 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0027] Fig.10 This is a diagram showing an example of the structure of a base station involved in one embodiment.

[0028] Fig.11 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0029] Fig.12 This is a diagram showing an example of the hardware configuration of a base station and a user terminal involved in one embodiment. DETAILED DESCRIPTION

[0030] (Repeatedly send)

[0031] In Rel.15, repeated transmission is supported in data transmission. For example, the base station (network (NW), gNB) repeatedly transmits DL data (e.g., downlink shared channel (PDSCH)) a specific number of times. Alternatively, the UE repeatedly transmits UL data (e.g., uplink shared channel (PUSCH)) a specific number of times.

[0032] Figure 1A FIG. 1 is a diagram showing an example of repeated transmission of PUSCH. Figure 1A , an example of scheduling a specific number of repeated PUSCHs by a single DCI is shown. The number of repetitions is also called a repetition coefficient (repetition factor) K or an aggregation factor (aggregation factor) K.

[0033] exist Figure 1A In , the repetition coefficient K=4, but the value of K is not limited to this. In addition, the nth repetition can also be called the nth transmission opportunity (transmission occasion), etc., and is identified by the repetition index k (0≤k≤K-1). In addition, Figure 1A , the repeated transmission of a PUSCH dynamically scheduled by DCI (for example, a PUSCH based on a dynamic grant) is shown, but it can also be applied to the repeated transmission of a PUSCH based on a set grant.

[0034] For example, in Figure 1A In the embodiment, the UE receives information indicating the repetition coefficient K (e.g., aggregationFactorUL or aggregationFactorDL) through high-layer signaling. Here, the high-layer signaling may be, for example, any one of RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information, etc., or a combination thereof.

[0035] MAC signaling may use, for example, MAC control elements (MAC CE (Control Element)), MAC PDU (Protocol Data Unit), etc. Broadcast information may also be, for example, a master information block (MIB: Master Information Block), a system information block (SIB: System Information Block), minimum system information (RMSI: Remaining Minimum System Information), etc.

[0036] The UE controls the reception processing (e.g., at least one of reception, demapping, demodulation, and decoding) of the PDSCH or the transmission processing (e.g., at least one of transmission, mapping, modulation, and encoding) of the PUSCH in K consecutive time slots based on at least one of the following field values ​​(or information represented by the field value) in the DCI:

[0037] Allocation of time domain resources (e.g., starting symbol, number of symbols in each time slot, etc.),

[0038] The allocation of frequency domain resources (e.g., a specific number of resource blocks (RBs), a specific number of resource block groups (RBGs)),

[0039] Modulation and Coding Scheme (MCS) index,

[0040] The structure (configuration) of the demodulation reference signal (DMRS) of PDSCH,

[0041] The state (TCI-state) of the transmission configuration indication (TCI: Transmission Configuration Indication or Transmission Configuration Indicator).

[0042] The same symbol allocation can also be applied between consecutive K time slots. Figure 1A , it is shown that the PUSCH in each slot is allocated to a specific number of symbols from the beginning of the slot. The same symbol allocation between slots can also be determined as described in the above-mentioned time domain resource allocation.

[0043] For example, the UE may determine the symbol allocation in each time slot based on the starting symbol S and the number of symbols L determined based on the value m of a specific field (e.g., the TDRA field) in the DCI. In addition, the UE may determine the initial time slot based on the K2 information determined based on the value m of a specific field (e.g., the TDRA field) in the DCI.

[0044] On the other hand, between the consecutive K time slots, the redundancy version (RV) applied to the TB based on the same data may be the same, or may be at least partially different. For example, the RV applied to the TB in the nth time slot (transmission opportunity, repetition) may also be determined based on the value of a specific field (e.g., RV field) in the DCI.

[0045] The resources allocated in K consecutive time slots, and the UL, DL or flexible (Flexible) of each time slot specified by at least one of the uplink and downlink communication direction indication information for TDD control (for example, RRC IE "TDD-UL-DL-ConfigCommon", "TDD-UL-DL-ConfigDedicated") and the time slot format identifier (Slot format indicator) of DCI (for example, DCI format 2_0), may not send (or receive) the resources of the time slot containing the codeword when the communication direction is different in at least one codeword.

[0046] In Rel.15, Figure 1A As shown, the PUSCH is repeatedly transmitted over multiple time slots (in time slot units), but after Rel.16, it is assumed that the PUSCH is repeatedly transmitted in units shorter than the time slot (for example, sub-time slot units, mini-time slot units, or specific code number units) (refer to Figure 1B ).

[0047] For example, the UE performs multiple PUSCH transmissions in one time slot. When repeated transmissions are performed in sub-time slots, the following situation may occur depending on the number of repeated transmissions (for example, K) and the data allocation unit (the data length of each repeated transmission). That is, one of the multiple repeated transmissions crosses the time slot boundary. Figure 1B In this case, the PUSCHs with k=2 are arranged across the time slot boundary. In this case, the PUSCHs may be divided (or segmented) based on the time slot boundary and transmitted.

[0048] In addition, it is also assumed that a time slot contains a symbol that cannot be used for PUSCH transmission (for example, a DL symbol, etc.). In this case, it is assumed that PUSCH transmission is performed using a symbol other than the DL symbol. For example, in the case where a DL symbol is included in the middle symbol of a certain PUSCH allocation symbol, PUSCH transmission can also be performed so that PUSCH is not allocated to the DL symbol portion. In this case, PUSCH can also be divided (or segmented) (refer to Figure 2 ).

[0049] exist Figure 2 , in the case where the PUSCH of k=1 (Rep#2) is divided into two (Rep#2-1 and Rep#2-2) by DL symbols, and the PUSCH of k=2 (Rep#3) is divided into two (Rep#3-1 and Rep#3-2) by the time slot boundary in the subslot-based repeated transmission. Figure 2 The sub-slot based repetition transmission shown may also be referred to as repetition transmission Type B (eg, PUSCH repetition Type B).

[0050] By repeatedly transmitting the PUSCH on a subslot basis, it is possible to complete the repeated transmission of the PUSCH more quickly than when repeatedly transmitting the PUSCH on a slot basis.

[0051] In addition, Figure 2 In the example, the case where UL symbols (U) and DL symbols (D) are notified as time slot formats is shown, but other formats (for example, flexible symbols (F) that are not explicitly specified as DL or UL symbols) may also be notified. The UE may perform UL transmission or DL ​​transmission in the flexible symbols, or may perform specific operations (or specific operations are restricted). Information related to the time slot format may also be notified through at least one of high-layer signaling and DCI (for example, dynamic SFI).

[0052] <Invalid symbol mode>

[0053] In the case of applying repeated transmission type B for PUSCH transmission, it is also studied to notify the UE of information related to the codeword (or codeword pattern) that cannot be used in PUSCH transmission. The codeword pattern that cannot be used in PUSCH transmission can also be called invalid codeword pattern, invalid codeword pattern (Invalid symbol pattern), invalid codeword pattern, etc.

[0054] Regarding repeated transmission of PUSCH based on dynamic grant dynamically scheduled by DCI, a study is underway to notify the null symbol pattern using at least one of higher layer signaling and DCI. The DCI may also be a specific DCI format (eg, at least one of DCI formats 0_1 and 0_2).

[0055] For example, the first higher layer parameter is used to notify information related to an invalid symbol pattern that cannot be used in PUSCH transmission. In addition, the application of the information related to the invalid symbol pattern (whether it is applied) can also be notified to the UE using DCI. In this case, a bit field for indicating the application of information related to the invalid symbol pattern (a field for notifying whether the invalid symbol pattern is applied) can also be set in the DCI.

[0056] In addition, the second high-level parameter may be used to notify the UE of the configuration of the notification field (or, additional bit) in the DCI. That is, when the information related to the invalid symbol pattern is notified through the first high-level parameter, the UE may also determine whether to apply the information related to the invalid symbol pattern based on the second high-level parameter and the DCI.

[0057] In the case where the first high-layer parameter is not notified or is not set, the UE may also control the transmission of the PUSCH without considering the invalid symbol mode. Alternatively, as a time slot format, the codeword notified by the high-layer signaling or the like is used as a flexible codeword (F) in the PUSCH transmission. In this case, the segmentation of the PUSCH may also be controlled based on at least one of the DL codeword and the time slot boundary. In the case where there is a codeword notified as a DL codeword in the allocated codewords of the PUSCH, the UE controls so that the codeword is not used in the PUSCH transmission.

[0058] When the first higher layer parameter is notified or configured, the UE may also determine whether the invalid symbol pattern is applied (whether it is applied) based on the second higher layer parameter and the DCI. For example, when the addition of an additional bit (or a specific field) indicating whether the invalid symbol pattern is applied in the DCI is indicated by the second higher layer parameter, the UE may also determine whether the invalid symbol pattern is applied based on the specific field.

[0059] When a specific field of the DCI is a first value (e.g., 0), it may also indicate that an invalid symbol pattern notified by a first high-level parameter is not applied. In this case, the UE controls the transmission of the PUSCH without considering the invalid symbol pattern information. For example, as a time slot format, a symbol notified by high-level signaling, etc. may be used as a flexible symbol (F) in PUSCH transmission. In this case, the segmentation of the PUSCH may also be controlled based on at least one of a DL symbol and a time slot boundary. When there is a symbol notified as a DL symbol in the allocated symbols of the PUSCH, the UE controls so that the symbol is not used in the PUSCH transmission.

[0060] When the specific field of the DCI is the second value (e.g., 1), it may also indicate that an invalid symbol pattern notified by the first high-layer parameter is applied. In this case, the UE controls the transmission of the PUSCH in consideration of the invalid symbol pattern information. For example, the UE controls so that DL symbols and symbols notified as invalid symbols are not used in PUSCH transmission. In this case, the segmentation of the PUSCH may also be controlled based on at least one of the DL symbols, the invalid symbol pattern, and the time slot boundary. The UE controls so that PUSCH transmission is performed using symbols other than the DL symbols and symbols notified as invalid symbols in the allocated symbols of the PUSCH.

[0061] The UE may apply the invalid symbol pattern without being instructed by the second higher layer parameter to add an additional bit (or a specific field) in the DCI indicating whether the invalid symbol pattern is applied, or without being notified of the second higher layer parameter.

[0062] The first higher layer parameter may be any information for notifying a symbol pattern that becomes invalid in PUSCH transmission, and for example, a bitmap format may be used (see Figure 3A ). Figure 3A FIG. 1 is a diagram showing an example of a case where an invalid symbol pattern is defined by a bitmap (2-D bitmap) for the time domain and the frequency domain. The UE may also determine the resources that can be used for PUSCH transmission in the time domain and the frequency domain based on the information related to the invalid symbol pattern (refer to Figure 3B ).

[0063] In addition, regarding the first higher layer parameter, a scheme used in notification of a rate matching pattern (rateMatchPattern) in the time domain for PDSCH may be applied.

[0064] Regarding repetition type B, it is assumed that in addition to PUSCH transmission based on a dynamic grant, PUSCH transmission based on a configured grant is also supported.

[0065] <Send based on setting permission (Type 1, Type 2)>

[0066] The transmission based on the dynamic grant is a method of performing UL transmission based on a dynamic UL grant (dynamic grant, dynamic UL grant) using an uplink shared channel (for example, PUSCH (Physical Uplink Shared Channel)).

[0067] Transmission based on configured grant is a method of performing UL transmission using an uplink shared channel (e.g., PUSCH) based on a UL grant configured by a higher layer (e.g., may also be referred to as a configured grant, configured UL grant, etc.). Regarding transmission based on configured grant, UL resources have been allocated to the UE, and the UE can actively perform UL transmission using the configured resources, so low-latency communication can be expected.

[0068] Transmission based on dynamic grant can also be called PUSCH based on dynamic grant (dynamic grant-basedPUSCH), UL transmission with dynamic grant (UL Transmission with dynamic grant), PUSCH with dynamic grant (PUSCH with dynamic grant), UL transmission with UL grant (UL Transmission with ULgrant), transmission based on UL grant (UL grant-based transmission), UL transmission scheduled (with transmission resources set) by dynamic grant, etc.

[0069] Transmission based on configured grant can also be called PUSCH based on configured grant (configured grant-based PUSCH), UL transmission accompanied by configured grant (UL Transmission with configured grant), PUSCH with configured grant (PUSCH with configured grant), UL transmission without UL grant (UL Transmissionwithout UL grant), transmission without UL grant (UL grant-free transmission), UL transmission scheduled by configured grant (with configured transmission resources), etc.

[0070] In addition, transmission based on the configuration grant may also be defined as a type of UL Semi-Persistent Scheduling (SPS). In the present disclosure, "configuration grant" may be interchangeably referred to as "SPS", "SPS / configuration grant", and the like.

[0071] Regarding transmission based on set permissions, several types (Type 1, Type 2, etc.) are being studied.

[0072] In configured grant type 1 transmission, parameters used in transmission based on the configured grant (may also be referred to as transmission parameters based on the configured grant, configured grant parameters, etc.) are configured to the UE using only higher layer signaling.

[0073] In a configured grant type 2 transmission, the configuration grant parameters are configured to the UE via higher layer signaling. In a configured grant type 2 transmission, at least a portion of the configuration grant parameters may also be notified to the UE via physical layer signaling (e.g., downlink control information (DCI) for activation described later).

[0074] Here, the high-layer signaling may be, for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information, or any one of them, or a combination thereof.

[0075] MAC signaling may use, for example, MAC control elements (MAC CE (Control Element)), MAC PDU (Protocol Data Unit), etc. Broadcast information may also be, for example, a master information block (MIB: Master Information Block), a system information block (SIB: System Information Block), minimum system information (remaining minimum system information (RMSI: Remaining Minimum System Information)), other system information (OSI: Other System Information), etc.

[0076] The grant parameter may also be configured for the UE using the ConfiguredGrantConfig information element of RRC. The grant parameter may also include, for example, information for determining the grant resource. The grant parameter may also include, for example, information related to the grant index, time offset, periodicity, number of repetitions of the transport block (TB: Transport Block) (the number of repetitions may also be expressed as K), the redundancy version (RV: Redundancy Version) sequence used in the repetitions, the above-mentioned timer, etc.

[0077] Here, the period and time offset may also be expressed in units such as symbols, time slots, subframes, frames, etc. The period may also be expressed, for example, by a specific number of symbols. The time offset may also be expressed, for example, by a timing offset relative to a specific index (time slot number = 0 and / or system frame number = 0, etc.). The number of repeated transmissions may also be an arbitrary integer, such as 1, 2, 4, 8, etc. When the number of repeated transmissions is n (>0), the UE may also use n transmission opportunities to perform PUSCH transmission based on the set permission for a specific TB.

[0078] The UE may also determine that one or more set permissions are triggered when the set permission type 1 transmission is set. The UE may also use the resources for transmission based on the set permission (which may also be called set permission resources, transmission opportunities (transmission occasions), etc.) that are set to perform PUSCH transmission. In addition, even when the transmission based on the set permission is set, if there is no data in the transmission buffer, the UE may skip the transmission based on the set permission.

[0079] The UE may also determine that one or more setting permissions are triggered (or activated) when the setting permission type 2 is set and a specific activation signal is notified. The specific activation signal (activation DCI) may also be a DCI (PDCCH) scrambled by a specific identifier (for example, a configured scheduling RNTI (CS-RNTI: Configured Scheduling RNTI)) and CRC (Cyclic Redundancy Check). In addition, the DCI may also be used in the control of deactivation, retransmission, etc. of the setting permission.

[0080] The UE may also determine whether to use the configured permission resources configured by the higher layer to send PUSCH based on the above-mentioned specific activation signal. The UE may also release (also referred to as release, deactivate, etc.) the resources (PUSCH) corresponding to the configured permission based on the DCI that deactivates the configured permission or the expiration of a specific timer (the passage of a specific time).

[0081] In addition, even when transmission based on the set grant is active (in an active state), the UE may skip transmission based on the set grant when there is no data in the transmission buffer.

[0082] In addition, each of the dynamic grant and the configured grant may also be referred to as an actual UL grant. That is, the actual UL grant may also be a higher layer signaling (eg, the ConfiguredGrantConfig information element of RRC), a physical layer signaling (eg, the above-mentioned specific activation signal), or a combination thereof.

[0083] <Settings based on setting permissions>

[0084] In an existing wireless communication system (e.g., before Rel. 15), the number of configuration permissions (e.g., UL CG configuration or ConfiguredGrantConfig) set for one cell (or, carrier, BWP) is limited to one. In contrast, in a future wireless communication system (e.g., after Rel. 16), a study is underway to configure multiple configuration permissions for one BWP (or, carrier, cell). As an example, it is also possible to support the setting of a specific number (e.g., up to 12) of configuration permissions for each BWP.

[0085] Figure 4A Indicates a case where a configuration permission (CG config) is set separately for each of a plurality of service types (here, two service types). Specifically, it indicates a case where a first configuration permission (CG config#0) is set for service type #1 (for example, voice service), and a second configuration permission (CG config#1) is set for service type #2 (for example, low-latency service). The first configuration permission and the second configuration permission may be set to different transmission conditions (for example, period, transmission opportunity, etc.) for PUSCH.

[0086] Figure 4BIndicates that multiple configuration permissions (here CG config#0-#2) corresponding to different transmission opportunities are configured. The UE may also select one configuration permission from the multiple configuration permissions (here CG config#0-#2) to transmit the PUSCH based on the timing of the service.

[0087] For example, when a service occurs, the UE may select a setting grant structure that enables the service (PUSCH) to be transmitted with low delay and a greater number of iterations, thereby controlling the transmission of the PUSCH. Figure 4B This shows the situation where CG config#2 is used for the first business and CG config#1 is used for the subsequent business.

[0088] As described above, in future wireless communication systems, it is envisioned that notification or setting of null symbols (or null symbol patterns) is supported for PUSCH transmissions applying repeated transmission type B. However, when supporting the null symbol pattern, the inventors of the present invention focused on the fact that the following situations have not been fully studied.

[0089] In the case of supporting notification of an invalid symbol pattern for a time interval (e.g., symbol) designated as UL by a slot format (case 1), how to control PUSCH transmission becomes a problem. For example, in the case where a UL symbol notified by a slot format conflicts with an invalid symbol, how to control whether PUSCH is transmitted in the symbol becomes a problem. The inventors of the present invention studied how to control PUSCH transmission in such a case and came up with a method of the present embodiment.

[0090] In the case where an invalid symbol pattern is applied to a PUSCH transmission based on a configuration permission supporting multiple configuration permissions (CG config) (Case 2), how to control the notification or setting of the invalid symbol pattern becomes a problem. Therefore, the inventors of the present invention studied the setting of the invalid symbol pattern for PUSCH transmission based on a configuration permission for a configuration that allows multiple configuration permissions, and came up with another method of the present embodiment.

[0091] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Each embodiment can be applied separately or in combination. In addition, the following method can be applied to at least one of PUSCH transmission based on dynamic permission and PUSCH transmission based on setting permission.

[0092] (First method)

[0093] In the first aspect, an example of PUSCH transmission control in the case of supporting notification of a null symbol pattern for a time interval notified by a slot format (for example, designated as at least UL or flexible symbol) will be described.

[0094] The UE receives information related to the time slot format (hereinafter referred to as time slot format information) and information related to the invalid code element mode (hereinafter referred to as invalid code element mode information) from the network (e.g., a base station). The time slot format information may also be sent to the UE through at least one of the higher layer signaling and the DCI. The UE may also determine the transmission direction set for each code element based on the time slot format information.

[0095] The invalid symbol pattern information may also be notified or set to the UE through higher layer signaling. When the invalid symbol pattern information is notified, the UE may also receive at least one of information (e.g., DCI) for notifying whether the invalid symbol pattern is applied, and information (e.g., higher layer signaling) for notifying whether a specific field used in the notification of whether the invalid symbol pattern information is applied is set in the DCI.

[0096] The UE that has acquired the slot format information and the null symbol pattern information may apply at least one of the following options 1-1 to 1-3 to control PUSCH transmission.

[0097] <Option 1-1>

[0098] The following structure may be adopted: the codeword designated as UL by the time slot format information is not designated as an invalid codeword by the invalid codeword pattern information. In other words, the codeword designated as UL by the time slot format information may also be designated as not invalid (valid) in PUSCH transmission by the invalid codeword pattern information.

[0099] The base station sets a bit value (e.g., 0) indicating that the symbol set as UL is not invalid (or valid) in the invalid symbol mode information notified or set to the UE. The symbol set as UL may also be a symbol semi-statically designated as UL (e.g., through high-layer signaling) through slot format information.

[0100] That is, the base station can also perform control to avoid conflict between the codeword designated as UL by the time slot format information and the codeword designated as invalid by the invalid codeword pattern information.

[0101] The UE may not assume that the codeword designated as UL by the time slot format information is designated as invalid (for example, the bit value is set to "1") by the invalid codeword pattern information. In other words, the UE may also assume that the codeword designated as UL by the time slot format information is not designated as invalid (for example, the bit value is set to "0") by the invalid codeword pattern information.

[0102] When the UE applies the invalid symbol mode, control may be performed so that the PUSCH is transmitted using symbols other than the following symbols (see Figure 5 ). That is, the UE may also perform control so as not to perform PUSCH transmission using the following codewords.

[0103] A symbol designated as an invalid symbol (e.g., a bit value set to "1")

[0104] Symbols designated as DL

[0105] Figure 5 An example of controlling actual transmission based on slot format information and null symbol pattern information is shown. Here, a symbol designated as UL by slot format information is designated as not null (eg, a bit value "0" is set) by null symbol pattern information.

[0106] The UE may also perform control so that a symbol that is specified as flexible (F) by the slot format information and is specified as not invalid (for example, a bit value "0") by the invalid symbol pattern information is used in PUSCH transmission. On the other hand, control may be performed so that a symbol that is specified as flexible (F) by the slot format information and is specified as invalid (for example, a bit value "1") by the invalid symbol pattern information is not used in PUSCH transmission.

[0107] In this way, by setting a configuration in which a symbol designated as UL is not designated as a null symbol by the null symbol pattern information, it is possible to appropriately perform PUSCH transmission using the slot format information and the null symbol pattern information.

[0108] [change]

[0109] It is also possible to have a structure in which a symbol designated as DL by the time slot format information is designated as an invalid symbol by the invalid symbol mode information (for example, a bit value "1" is set). Alternatively, it is also possible to have a structure in which the invalid symbol mode information is not notified or set for the symbol designated as DL by the time slot format information. The symbol set as DL may also be a symbol designated as DL semi-statically (for example, by higher layer signaling) by the time slot format information.

[0110] <Option 1-2>

[0111] A structure in which a conflict occurs between a codeword designated as UL by the time slot format information and a codeword designated as invalid by the invalid codeword pattern information may also be allowed. Here, the so-called conflict is equivalent to a situation in which, for the same codeword, the information designated by the time slot format information (PUSCH can be transmitted) and the information designated by the invalid codeword pattern information (PUSCH cannot be transmitted) are different.

[0112] In this case, the following structure may be adopted: even when a symbol designated as UL by the time slot format information is designated as an invalid symbol by the invalid symbol pattern information, PUSCH is transmitted. The UE may also control so that, for a symbol designated as UL by the time slot format information, PUSCH transmission is performed (or PUSCH transmission is determined to be valid) regardless of the content designated by the invalid symbol pattern information. That is, the time slot format information may be applied preferentially over the invalid symbol pattern information.

[0113] When the UE applies the invalid symbol mode, control may be performed so that the PUSCH is transmitted using symbols other than the following symbols (see Figure 6 ). That is, the UE may also perform control so as not to perform PUSCH transmission using the following codewords.

[0114] A symbol designated as invalid (for example, a bit value set to "1") among symbols other than the symbol designated as UL (for example, a flexible symbol)

[0115] Symbols designated as DL

[0116] Figure 6 An example of controlling actual transmission based on slot format information and null symbol pattern information is shown. Here, it is shown that for a symbol designated as UL by slot format information, it is allowed to be designated as null (for example, set to a bit value of "1") by null symbol pattern information.

[0117] The UE may also control the PUSCH transmission using a symbol designated as UL by the time slot format information, when the symbol designated as invalid by the invalid symbol pattern information (for example, a bit value of "1" is set). That is, the UE may also ignore the invalid symbol pattern information that designates the symbol designated as UL by the time slot format information as invalid.

[0118] The UE may also perform control so that the following codewords are used in PUSCH transmission, that is, the codewords that are specified as flexible (F) by the time slot format information and are specified as not invalid (for example, the bit value "0" is set) by the invalid codeword pattern information. On the other hand, the following codewords may be controlled not to be used in PUSCH transmission, that is, the codewords that are specified as flexible (F) by the time slot format information and are specified as invalid (for example, the bit value "1" is set) by the invalid codeword pattern information.

[0119] In this way, when a specific codeword is designated as UL, the specific codeword is used for UL transmission regardless of the content of the invalid codeword pattern information. Therefore, even if the time slot format information for the specific codeword conflicts with the invalid codeword pattern information, PUSCH can be properly transmitted.

[0120] [change]

[0121] The following structure may be allowed, that is, for a symbol designated as DL by the time slot format information, it is designated as not an invalid symbol or PUSCH transmission is valid (for example, the bit value is set to "0") by the invalid symbol pattern information. In this case, the UE may also control not to transmit PUSCH (or determine that PUSCH transmission is invalid) regardless of the content designated by the invalid symbol pattern information.

[0122] Alternatively, a configuration may be adopted in which symbols designated as DL by slot format information are not notified or invalid symbol pattern information is set. Symbols set as DL may also be symbols designated as DL semi-statically (eg, by higher layer signaling) by slot format information.

[0123] <Options 1-3>

[0124] A structure in which a conflict occurs between a symbol designated as UL by the slot format information and a symbol designated as invalid by the invalid symbol pattern information may also be allowed.

[0125] In this case, the following structure may be adopted: when a symbol designated as UL by the time slot format information is designated as an invalid symbol by the invalid symbol pattern information, the PUSCH is not transmitted using the symbol. The UE may also perform control so that, for a symbol designated as UL by the time slot format information, PUSCH transmission is performed based on the content designated by the invalid symbol pattern information. That is, the invalid symbol pattern information may be applied preferentially compared to the time slot format information.

[0126] When the UE applies the invalid symbol mode, control may be performed so that the PUSCH is transmitted using symbols other than the following symbols (see Figure 7 ). That is, the UE may also perform control so as not to perform PUSCH transmission using the following codewords.

[0127] A symbol designated as an invalid symbol (e.g., a bit value set to "1")

[0128] Symbols designated as DL

[0129] Figure 7 An example of controlling actual transmission based on slot format information and null symbol pattern information is shown. Here, it is shown that a symbol designated as UL by slot format information is allowed to be designated as null (for example, set to a bit value of "1") by null symbol pattern information.

[0130] The UE may also control not to perform PUSCH transmission using a symbol designated as UL by the time slot format information when the symbol designated as invalid (for example, a bit value "1") by the invalid symbol pattern information. That is, the UE may ignore information (for example, UL) designated by the time slot format information for a symbol designated as invalid by the invalid symbol pattern information.

[0131] The UE may also perform control so that the following codewords are used in PUSCH transmission, that is, the codewords that are specified as flexible (F) by the time slot format information and are specified as not invalid (for example, the bit value "0" is set) by the invalid codeword pattern information. On the other hand, the following codewords may be controlled not to be used in PUSCH transmission, that is, the codewords that are specified as flexible (F) by the time slot format information and are specified as invalid (for example, the bit value "1" is set) by the invalid codeword pattern information.

[0132] In this way, even when a specific codeword is designated as UL, the presence or absence of UL transmission is judged based on the content of the invalid codeword pattern information, so that when the time slot format information for the specific codeword conflicts with the invalid codeword pattern information, the transmission of PUSCH can be appropriately controlled.

[0133] [change]

[0134] The following structure may also be allowed, that is, for a symbol designated as DL by the time slot format information, it is designated as not an invalid symbol or PUSCH transmission is valid (for example, the bit value is set to "0") by the invalid symbol pattern information. In this case, the UE may also control not to transmit PUSCH (or determine that PUSCH transmission is invalid) regardless of the content designated by the invalid symbol pattern information.

[0135] Alternatively, the UE may perform control so as to perform PUSCH transmission according to the content specified by the null symbol pattern information. Alternatively, a configuration may be adopted in which the null symbol pattern information is not notified or set for symbols specified as DL by the slot format information.

[0136] (Second method)

[0137] In the second aspect, an example of a method for setting an invalid symbol pattern for PUSCH transmission is described in the case of supporting multiple configurations (CG config) for PUSCH transmission based on configuration permissions.

[0138] Regarding PUSCH transmission supporting a configuration of multiple configuration permissions, at least one of the following null symbol pattern configurations 1 to 3 may be applied.

[0139] <Invalid symbol mode setting 1>

[0140] The invalid symbol pattern (or, invalid symbol) may also be separately set for each setting permission (CG config). For example, when multiple setting permissions are set for PUSCH transmission based on setting permissions, the invalid symbol pattern (or, different invalid symbol patterns) may also be separately associated with each setting permission.

[0141] For example, Figure 8 As shown, when multiple configuration permissions (CG config#0-#2) are configured for PUSCH transmission based on configuration permissions, different invalid symbol patterns may be configured for each configuration permission. In this case, the time slot format may be specified in common for multiple configuration permissions (or multiple invalid symbol patterns) or may be specified separately for each of the multiple configuration permissions.

[0142] Figure 8 This shows an example of controlling actual transmission based on time slot format information and invalid symbol pattern information. Here, the transmission control of PUSCH is shown when an invalid symbol pattern (e.g., Invalid symbol pattern #0) corresponding to a certain setting permission (e.g., CG config #0) is not applied and when it is applied.

[0143] The UE may also perform control so that the following codewords are used in PUSCH transmission, that is, the codewords that are specified as flexible (F) by the time slot format information and are specified as not invalid (for example, the bit value "0" is set) by the invalid codeword pattern information. On the other hand, the following codewords may be controlled not to be used in PUSCH transmission, that is, the codewords that are specified as flexible (F) by the time slot format information and are specified as invalid (for example, the bit value "1" is set) by the invalid codeword pattern information.

[0144] Different invalid codeword modes may be set for other setting permissions (for example, CG config#1, #2).

[0145] Here, the case where the codeword designated as UL by the time slot format information is designated as not invalid (for example, the bit value is set to "0") by the invalid codeword pattern information is shown, but it is not limited to this. The codeword designated as UL can also be designated as invalid (for example, the bit value is set to "0") by the invalid codeword pattern information. In this case, it is sufficient to apply option 1-2 or 1-3 in the first method.

[0146] In addition, whether or not the invalid codeword mode is applied (or whether or not it is set) can also be set separately for each setting permission (for example, CG config#0-#2).

[0147] In this way, by separately setting the structure of the null symbol pattern for each configuration permission, it is possible to flexibly control the transmission of the PUSCH for each configuration permission.

[0148] <Invalid symbol mode setting 2>

[0149] Null symbol patterns (or null symbols) may also be set per bandwidth portion (e.g., UL BWP) (or per BWP). For example, in the case where multiple BWPs are set for PUSCH transmission based on a setting grant, null symbol patterns (or different null symbol patterns) may also be associated with each BWP separately.

[0150] In this case, when a plurality of configuration permissions (CG config) are set for one BWP, a common invalid symbol pattern may be set for the plurality of configuration permissions. On the other hand, the invalid symbol pattern may be set separately for configuration permissions corresponding to different BWPs.

[0151] By applying the same invalid symbol pattern to multiple configuration permissions (CG config) corresponding to the same BWP, it is possible to suppress the increase in the overhead for notifying the invalid symbol pattern.

[0152] <Invalid symbol mode setting 3>

[0153] The null symbol pattern (or, null symbol) may be set in units of cells (or, CCs).

[0154] In this case, when multiple BWPs (or multiple configuration permissions (CG config)) are set for one cell, a common invalid codeword pattern may be set for the multiple BWPs (or multiple configuration permissions). For example, when two UL BWPs are set for a certain cell and four configuration permissions (CGconfig) are set for each UL BWP, one (or common) invalid codeword pattern may be applied to eight configuration permissions.

[0155] By applying the same null symbol pattern to multiple BWPs (or multiple configuration permissions (CG config)) corresponding to the same cell, it is possible to suppress an increase in overhead for notifying the null symbol pattern.

[0156] (Wireless Communication System)

[0157] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0158] Fig. 9 1 is a diagram showing an example of a schematic structure of a wireless communication system involved in one embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), and the like.

[0159] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA))) and NR (E-UTRA-NR Dual Connectivity (E-UTRA-NR Dual Connectivity (EN-DC))), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

[0160] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (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.

[0161] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0162] The wireless communication system 1 may also include: a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in 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 in at least one cell. The configuration and number of each cell and the user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.

[0163] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0164] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the 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 be a frequency band below 6 GHz (lower than 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (higher than 24 GHz (above-24 GHz)). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to this. For example, FR1 may also correspond to a frequency band higher than FR2.

[0165] Furthermore, the user terminal 20 may perform communication in each CC using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0166] Multiple base stations 10 may also be connected by wire (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to a relay station may also be referred to as an IAB node.

[0167] 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 also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0168] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0169] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may be used. 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.

[0170] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be applied to the UL and DL radio access schemes.

[0171] As downlink channels, the wireless communication system 1 may use a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc.

[0172] In addition, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (Physical Random Access Channel (PRACH)) and the like can also be used in the wireless communication system 1.

[0173] The PDSCH is used to transmit user data, high-layer control information, system information block (SIB), etc. The PUSCH is also used to transmit user data, high-layer control information, etc. In addition, the PBCH is also used to transmit the master information block (MIB).

[0174] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0175] In addition, the DCI that schedules the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI that schedules the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be replaced by DL data, and the PUSCH may also be replaced by UL data.

[0176] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space setting.

[0177] A search space may also correspond to PDCCH candidates that are consistent with one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be interchangeable.

[0178] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., may also be called hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (Scheduling Request (SR)) may also be transmitted through PUCCH. Random access preamble code for establishing connection with a cell may also be transmitted through PRACH.

[0179] In the present disclosure, downlink, uplink, etc. may be expressed without the word “link.” In addition, various channels may be expressed without the word “physical” at the beginning.

[0180] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As DL-RS, in the wireless communication system 1, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0181] The synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as SS / PBCH block, SS block (SSB), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0182] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0183] (Base Station)

[0184] Fig.10 1 is a diagram showing an example of a structure of a base station involved in one embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may each be provided with more than one.

[0185] In addition, in this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it is also assumed that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0186] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on the common knowledge in the technical field to which the present disclosure relates.

[0187] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0188] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the public knowledge in the technical field involved in the present disclosure.

[0189] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0190] The transmitting / receiving antenna 130 can be constituted by an antenna described based on the common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0191] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0192] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0193] The sending and receiving unit 120 (sending processing unit 1211), for example, may also perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 110, to generate a bit string to be sent.

[0194] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, discrete Fourier transform (DFT) processing (as needed), inverse fast Fourier transform (IFFT) processing), precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0195] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0196] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may perform amplification, filter processing, demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0197] For the acquired baseband signal, the transmitting and receiving unit 120 (receiving processing unit 1212) can also apply analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, etc. to obtain user data, etc.

[0198] The transmitting and receiving unit 120 (measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (Radio Resource Management (RRM)) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., reference signal received power (Reference Signal Received Power (RSRP))), received quality (e.g., reference signal received quality (Reference Signal Received Quality (RSRQ)), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal to noise ratio (Signal to Noise Ratio (SNR))), signal strength (e.g., received signal strength indicator (Received Signal Strength Indicator (RSSI))), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0199] The transmission path interface 140 can also send and receive signals (return signaling) between the devices included in the core network 30, other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0200] In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmitting and receiving unit 120 , the transmitting and receiving antenna 130 , and the transmission path interface 140 .

[0201] The transmitting and receiving unit 120 may transmit first information on a slot format and second information on a symbol pattern that becomes invalid in transmission of an uplink shared channel.

[0202] The control unit 110 may also perform control so that the uplink shared channel is received in a time interval that is at least designated as UL by the first information and is not designated as invalid by the second information.

[0203] (User Terminal)

[0204] Fig.11The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may be provided in one or more pieces.

[0205] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also assumed that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0206] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on the common knowledge in the technical field to which the present disclosure relates.

[0207] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 220.

[0208] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the public knowledge in the technical field involved in the present disclosure.

[0209] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured as a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0210] The transmitting / receiving antenna 230 can be constituted by an antenna described based on the common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0211] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0212] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0213] The sending and receiving unit 220 (sending processing unit 2211), for example, can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0214] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0215] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is valid (enabled), the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing without performing DFT processing.

[0216] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0217] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230 .

[0218] The sending and receiving unit 220 (receiving processing unit 2212) can also apply analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to obtain user data, etc.

[0219] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signal. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

[0220] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be constituted by at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0221] The transmitting and receiving unit 220 may receive first information on the slot format and second information on a symbol pattern that becomes invalid in transmission of the uplink shared channel.

[0222] The control unit 210 may also perform control so that the uplink shared channel is sent in a time interval that is at least designated as UL by the first information and is not designated as invalid by the second information.

[0223] For example, the control unit 210 may also assume that, for a time interval designated as UL by the first information, the control unit 210 is notified as not having an invalid symbol mode by the second information. Alternatively, the control unit 210 may also control so that the uplink shared channel is transmitted in a time interval designated as UL by the first information and designated as invalid in the transmission of the uplink shared channel by the second information. Alternatively, the control unit 210 may also control so that the uplink shared channel is not transmitted in a time interval designated as UL by the first information and designated as invalid in the transmission of the uplink shared channel by the second information.

[0224] (Hardware Structure)

[0225] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more devices that are physically or logically separated can be directly or indirectly (for example, by wired, wireless, etc.) connected and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0226] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending 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.

[0227] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Fig.12 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0228] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. are interchangeable. The hardware structure of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

[0229] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or in other ways. In addition, the processor 1001 may also be implemented by one or more chips.

[0230] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0231] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), the sending and receiving unit 120 (220), etc. may also be implemented by the processor 1001.

[0232] In addition, the processor 1001 reads the program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that enables a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same can be implemented for other functional blocks.

[0233] 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 ROM (EPROM), an electrically erasable programmable ROM (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 executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0234] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), etc.), a digital versatile disk, a Blu-ray (registered trademark) disk, a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other appropriate storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0235] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)), the communication device 1004 can also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. can also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) can also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0236] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0237] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or different buses may be used between the devices.

[0238] 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), and a field programmable gate array (FPGA), and the hardware may be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0239] (Variation Example)

[0240] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, channels, code elements, and signals (signals or signaling) may also be replaced with each other. In addition, a signal may also be a message. A reference signal may also be referred to as RS, and may also be referred to as a pilot, a pilot signal, etc. depending on the standard applied. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0241] A wireless frame may also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) constituting a wireless frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is not dependent on a parameter set (numerology).

[0242] Here, the parameter set may also refer to a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of the subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, wireless frame structure, specific filtering processing performed by the transmitter and receiver in the frequency domain, specific windowing processing performed by the transmitter and receiver in the time domain, etc.

[0243] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0244] A time slot may also include multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0245] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective names. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be interchangeable.

[0246] For example, a subframe may also be referred to as a TTI, a plurality of consecutive subframes may also be referred to as a TTI, and a time slot or a mini time slot may also be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in the existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may also be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0247] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited to this.

[0248] TTI may also be a transmission time unit for a data packet (transport block), a code block, a code word, etc. that has been channel-coded, and may also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may also be shorter than the TTI.

[0249] In addition, when one time slot or one mini time slot is referred to as TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) may also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling may also be controlled.

[0250] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0251] In addition, a long TTI (e.g., normal TTI, subframe, etc.) may be replaced by a TTI having a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) may be replaced by a TTI having a TTI length shorter than that of the long TTI and longer than 1 ms.

[0252] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may also include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0253] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks, respectively.

[0254] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0255] In addition, a resource block may also be composed of one or more resource elements (RE). For example, one RE may also be a radio resource region of one subcarrier and one symbol.

[0256] A Bandwidth Part (BWP) (also referred to as a partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, a common RB may also be identified by an index of the RB relative to a common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0257] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0258] At least one of the configured BWPs may be activated, and the UE may not assume that it transmits or receives a specific signal / channel other than the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced by "BWP".

[0259] In addition, the above-mentioned structures such as radio frames, subframes, time slots, mini-time slots and symbols are only examples. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

[0260] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0261] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. In addition, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0262] Information, signals, etc. described in the present disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0263] Furthermore, 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.

[0264] The input and output information, signals, etc. may be stored in a specific location (e.g., a memory), or may be managed using a management table. The input and output information, signals, etc. may be overwritten, updated, or appended. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0265] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), high-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.

[0266] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (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, such as an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC control element (MACControl Element (CE)).

[0267] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0268] The determination can be made by a value represented by a bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a specific value).

[0269] Whether software is called software, firmware, middle-ware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, procedures, functions, etc.

[0270] In addition, software, instructions, information, etc. may also be sent and received via a transmission medium. For example, when software is sent from a website, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0271] The terms "system" and "network" used in the present disclosure can be used interchangeably. "Network" may also refer to a device (eg, a base station) included in the network.

[0272] In the present 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", and "panel" can be used interchangeably.

[0273] In the present disclosure, terms such as "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" can be used interchangeably. There are also cases where base stations are referred to by terms such as macro cell, small cell, micro-micro cell, and micro-micro cell.

[0274] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0275] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” are used interchangeably.

[0276] In some cases, the mobile station is also referred to as a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a hand set, a user agent, a mobile client, a client, or some other appropriate terminology.

[0277] At least one of the base station and the mobile station may 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 may also be a device carried in a mobile body, a mobile body, etc. The mobile body may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile body that moves in an unmanned manner (e.g., a drone, an autonomous driving vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0278] In addition, the base station in the present disclosure may also be replaced by a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple user terminals (for example, it may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be set as a structure in which the user terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, expressions such as "uplink" and "downlink" may also be replaced by expressions corresponding to communication between terminals (for example, "side"). For example, an uplink channel, a downlink channel, etc. may also be replaced by a side channel.

[0279] Likewise, the user terminal in the present disclosure may be replaced by a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0280] In the present disclosure, the actions are assumed to be performed by the base station, and sometimes by its upper node according to the circumstances. Obviously, 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, Mobility Management Entity (MME)), Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0281] The various methods / implementations described in this disclosure may be used individually or in combination, and may be used in a switched manner as the method is executed. In addition, the processing procedures, sequences, flow charts, etc. of the various methods / implementations described in this disclosure may be reversed in order as long as they are not contradictory. For example, for the methods described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0282] The various modes and implementation modes described in the present disclosure may 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), 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, and next-generation systems based on these. In addition, multiple systems can also be combined (for example, LTE or LTE-A, combination with 5G, etc.) for application.

[0283] The term “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the term “based on” means both “based only on” and “based at least on”.

[0284] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not fully define the amount or order of these elements. These terms can be used in this disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to a first and a second element does not mean that only two elements can be used, or that the first element must take precedence over the second element in some form.

[0285] The term "determining" used in this disclosure may include a variety of actions. For example, "determining" may also refer to situations where judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc. are considered to be "determining".

[0286] In addition, "judgment (decision)" may also be a situation where receiving (for example, receiving information), sending (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc. are regarded as making a "judgment (decision)".

[0287] In addition, "judgment (decision)" can also refer to situations where resolving, selecting, choosing, establishing, comparing, etc. are considered as "judgment (decision)". In other words, "judgment (decision)" can also refer to situations where some actions are considered as "judgment (decision)".

[0288] In addition, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)” and so on.

[0289] The terms "connected", "coupled", or all their variations used in this disclosure refer to all direct or indirect connections or combinations between two or more elements, and may include the situation where one or more intermediate elements exist between two elements that are "connected" or "coupled" to each other. The combination or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may also be replaced by "access".

[0290] In the present disclosure, when two elements are connected, it is possible to consider being "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0291] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted in the same way as "different".

[0292] When the terms "include", "including", and variations thereof are used in the present disclosure, these terms have an inclusive meaning similar to the term "comprising". Furthermore, the term "or" used in the present disclosure does not have an exclusive OR meaning.

[0293] In the present disclosure, when an article is added by translation like a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0294] The invention involved in the present disclosure has been described in detail above, but it is obvious to those skilled in the art that the invention involved in the present disclosure is not limited to the embodiments described in the present disclosure. The invention involved in the present disclosure can be implemented as a modified and altered mode 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 the purpose of illustrative description and does not have any limiting meaning on the invention involved in the present disclosure.

Claims

1. A terminal having: A receiving unit, receiving first information indicating a time slot format; second information indicating, in a bitmap format, a symbol pattern that becomes invalid in the transmission of an uplink shared channel to which repeated transmission is applied; and third information indicating that a field for notifying whether the invalid symbol pattern is applied is included in the downlink control information; as well as a control unit, which determines that, when the invalid symbol pattern is set in units of bandwidth parts and application of the invalid symbol pattern is indicated by a field included in the downlink control information, the symbol indicated as an invalid symbol by the second information and the symbol indicated as DL by the first information are invalid in transmission of the uplink shared channel, When uplink shared channels based on a plurality of setting permissions are configured in one bandwidth portion, a common null symbol pattern is configured for the uplink shared channels based on the plurality of setting permissions.

2. The terminal according to claim 1, wherein: Null symbol patterns are separately set for uplink shared channels based on setting permissions corresponding to different bandwidth portions.

3. A wireless communication method of a terminal, comprising: receiving first information indicating a time slot format; and second information indicating, in a bitmap format, a symbol pattern that becomes invalid in transmission of an uplink shared channel to which repeated transmission is applied; and a step of including third information indicating whether a field for notifying whether the invalid symbol pattern is applied is included in the downlink control information; as well as When the invalid symbol pattern is set in units of bandwidth parts and application of the invalid symbol pattern is indicated by a field included in the downlink control information, a step of determining that a symbol indicated as an invalid symbol by the second information and a symbol indicated as a DL by the first information are invalid in transmission of the uplink shared channel, When uplink shared channels based on a plurality of setting permissions are configured in one bandwidth portion, a common null symbol pattern is configured for the uplink shared channels based on the plurality of setting permissions.

4. A base station, comprising: A transmitting unit, transmitting first information indicating a time slot format; and second information indicating, in a bitmap format, a symbol pattern that becomes invalid in the transmission of an uplink shared channel to which repeated transmission is applied; and third information indicating that a field for notifying whether the invalid symbol pattern is applied is included in the downlink control information; as well as a control unit that, when the invalid symbol pattern is set in units of bandwidth parts and application of the invalid symbol pattern is indicated by a field included in the downlink control information, indicates the invalid symbol in transmission of the uplink shared channel by using the second information and the first information; When uplink shared channels based on a plurality of setting grants are set in one bandwidth portion, a common null symbol pattern is set for the uplink shared channels based on the plurality of setting grants.

5. A system comprising a terminal and a base station, The terminal has: A receiving unit, receiving first information indicating a time slot format; second information indicating, in a bitmap format, a symbol pattern that becomes invalid in the transmission of an uplink shared channel to which repeated transmission is applied; and third information indicating that a field for notifying whether the invalid symbol pattern is applied is included in the downlink control information; as well as a control unit, which determines that, when the invalid symbol pattern is set in units of bandwidth parts and application of the invalid symbol pattern is indicated by a field included in the downlink control information, the symbol indicated as an invalid symbol by the second information and the symbol indicated as DL by the first information are invalid in transmission of the uplink shared channel, The base station has: A sending unit, sending the first information, the second information and the third information; as well as a control unit that, when setting the invalid symbol pattern in units of bandwidth parts and indicating application of the invalid symbol pattern, indicates the invalid symbol in transmission of the uplink shared channel through the second information and the first information, When uplink shared channels based on a plurality of setting grants are set in one bandwidth portion, a common null symbol pattern is set for the uplink shared channels based on the plurality of setting grants.

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