Terminal, wireless communication method, and base station

Abstract

A terminal according to one aspect of the present disclosure is characterized by comprising: a transmission unit that transmits information relating to a transmitted precoding matrix indicator (TPMI); and a control unit that controls uplink (UL) transmission using a maximum output power corresponding to the TPMI. According to one aspect of the present disclosure, appropriate power control can be performed.

Description

Terminal, wireless communication method and base station

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

[0002] Long Term Evolution (LTE) has been specified for the Universal Mobile Telecommunications System (UMTS) network with the aim of achieving higher data rates and lower latency (Non-Patent Document 1). Also, LTE-Advanced (3GPP Rel. 10-14) has been specified with the aim of achieving higher capacity and more advanced features than LTE (Third Generation Partnership Project (3GPP (registered trademark)) Release (Rel.) 8, 9).

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

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

[0005] In future wireless communication systems (e.g., NR), improvements in coverage are being considered for uplink (UL) transmissions from terminals (user terminals, User Equipment (UE)).

[0006] Therefore, it is preferable that the network (NW) grasps at least one piece of information, such as whether the full power mode is available to the UE, the nominal maximum output power corresponding to the full power mode, or the TPMI corresponding to the maximum output power. However, the method for reporting this information is not clear. If this information is not clear, for example, the network cannot set appropriate power control for the UE, and the UE cannot perform appropriate power control, which may result in a decrease in communication throughput.

[0007] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that are capable of performing appropriate power control.

[0008] A terminal according to one aspect of the present disclosure is characterized by having a transmitting unit that transmits information regarding a Transmitted Precoding Matrix Indicator (TPMI) and a control unit that controls uplink (UL) transmission using a maximum output power corresponding to the TPMI.

[0009] According to one aspect of the present disclosure, appropriate power control can be performed.

[0010] Figure 1 shows an example of the relationship between UE power class and nominal maximum output power. Figure 2 shows an example of a solution depending on the UE power amplifier (PA). Figure 3 shows a codebook for rank = 1 in Rel. 15 and Rel. 16. Figure 4 shows a codebook subset for Mode 1, rank = 1 in Rel. 15 and Rel. 16. Figure 5 shows an example of a precoder for Mode 2 2-port transmission in Rel. 16. Figure 6 shows an example of a precoder / TPMI group for Mode 2 4-port transmission in Rel. 16. Figure 7 shows an example of a codebook corresponding to a Mode 2 UE and rank = 1 in Rel. 16. Figures 8A and 8B show a first example of the transmit power of each PA for PC2. Figure 9 shows a second example of the transmit power of each PA for PC2. Figure 10 shows an example of a UE PA architecture and maximum transmit power corresponding to 2-antenna port transmission. FIG. 11 is a diagram illustrating an example of a PA architecture and maximum transmit power of a UE supporting four-antenna port transmission. FIG. 12 is a diagram illustrating an example of Option 3-4 of the first embodiment. FIGS. 13A and 13B are diagrams illustrating a first example of Option 1 of the third embodiment. FIG. 14 is a diagram illustrating a second example of Option 1 of the third embodiment. FIG. 15 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. FIG. 16 is a diagram illustrating an example of a configuration of a base station according to an embodiment. FIG. 17 is a diagram illustrating an example of a configuration of a user terminal according to an embodiment. FIG. 18 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. FIG. 19 is a diagram illustrating an example of a vehicle according to an embodiment.

[0011] (PUSCH transmission power control) In NR, the transmission power of the PUSCH is controlled based on the TPC command (also called a value, an increase / decrease value, a correction value, etc.) indicated by the value of a field in the DCI (also called a TPC command field, etc.).

[0012] For example, when a UE transmits a PUSCH on an active UL BWP b of a carrier f of a serving cell c using a parameter set (open loop parameter set) with index j and a power control adjustment state (PUSCH power control adjustment state) with index l, the transmission power (P ＰＵＳＣＨ、ｂ，ｆ，ｃ (i, j, q ｄ , l)) [dBm] is expressed as follows: ＣＭＡＸ，ｆ，ｃ（ｉ） , P Ｏ＿ＰＵＳＣＨ，ｂ，ｆ，ｃ (j), M ＰＵＳＣＨ ＲＢ，ｂ，ｆ，ｃ (i), α ｂ，ｆ，ｃ (j), P.L. ｂ，ｆ，ｃ (q ｄ ), Δ ＴＦ，ｂ，ｆ，ｃ (i), f ｂ，ｆ，ｃ (i, l), may be based on at least one of

[0013]

[0014] The power control adjustment state may be referred to as a closed loop (CL)-power control (PC) state, a value based on TPC commands of a power control adjustment state index l, an accumulated value of TPC commands, or a value due to closed loop, where l may be referred to as a closed loop index.

[0015] Furthermore, the PUSCH transmission opportunity i is a period during which the PUSCH is transmitted, and may be composed of, for example, one or more symbols, one or more slots, etc.

[0016] P ＣＭＡＸ，ｆ，ｃ (i) is, for example, the maximum transmit power of the user terminal configured for carrier f of serving cell c at transmission opportunity i (configured maximum output power, UE configured maximum output power).

[0017] P Ｏ＿ＰＵＳＣＨ，ｂ，ｆ，ｃ(j) is, for example, a parameter related to the target received power (e.g., a parameter related to the transmit power offset, also referred to as a transmit power offset P0, a target received power parameter, etc.) set for the active UL BWP b of the carrier f of the serving cell c at the transmission opportunity i. Ｏ＿ＵＥ＿ＰＵＳＣＨ，ｂ，ｆ，ｃ (j) is P Ｏ＿ＮＯＭＩＮＡＬ＿ＰＵＳＣＨ，ｆ，ｃ (j) and P Ｏ＿ＵＥ＿ＰＵＳＣＨ，ｂ，ｆ，ｃ It may be the sum of (j).

[0018] M ＰＵＳＣＨ ＲＢ，ｂ，ｆ，ｃ (i) is the number of resource blocks (bandwidth) allocated to PUSCH for transmission opportunity i in active UL BWP b of carrier f with serving cell c and subcarrier spacing μ, for example. ｂ，ｆ，ｃ (j) is a value provided by a higher layer parameter (e.g., also called msg3-Alpha, p0-PUSCH-Alpha, fractional factor, etc.).

[0019] PL ｂ，ｆ，ｃ (q ｄ ) is, for example, an index q of a reference signal (RS, pathloss reference RS, pathloss (PL)-RS, pathloss reference RS, pathloss measurement DL-RS, PUSCH-PathlossReferenceRS) for downlink BWP associated with an active UL BWP b of carrier f of serving cell c. ｄ is the path loss (path loss estimation [dB], path loss compensation) calculated by the user terminal using

[0020] If the UE is not provided with a pathloss reference RS (e.g., PUSCH-PathlossReferenceRS) or if the UE is not provided with individual upper layer parameters, the UE may use RS resources from a synchronization signal (SS) / physical broadcast channel (PBCH) block (SS block (SSB)) used to obtain a Master Information Block (MIB). ｂ，ｆ，ｃ (q ｄ ) may be calculated.

[0021] When the UE is configured with a number of RS resource indices up to the value of the maximum number of pathloss reference RSs (e.g., maxNrofPUSCH-PathlossReferenceRSs) and a set of RS configurations for the RS resource indices according to the pathloss reference RSs, the set of RS resource indices may include one or both of a set of SS / PBCH block indices and a set of channel state information (CSI)-reference signal (RS) resource indices. ｄ may be identified.

[0022] If a PUSCH transmission is scheduled by a Random Access Response (RAR) UL grant, the UE uses the same RS resource index q as for the corresponding PRACH transmission. ｄ may also be used.

[0023] When a UE is provided with a power control configuration for the PUSCH by a sounding reference signal (SRS) resource indicator (SRI) (e.g., SRI-PUSCH-PowerControl) and with one or more values ​​of ID of the pathloss reference RS, the UE may obtain a mapping between a set of values ​​for the SRI field in DCI format 0_1 ​​and a set of ID values ​​of the pathloss reference RS from higher layer signaling (e.g., sri-PUSCH-PowerControl-Id in SRI-PUSCH-PowerControl). The UE may obtain the RS resource index q from the ID of the pathloss reference RS mapped to the SRI field value in DCI format 0_1 ​​that schedules the PUSCH. ｄ may be determined.

[0024] If a PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with PUCCH spatial relationship information for the PUCCH resource with the lowest index for the active UL BWP b of each carrier f and serving cell c, the UE shall transmit the PUCCH spatial relationship information for the PUCCH resource with the same RS resource index q as the PUCCH transmission in that PUCCH resource. ｄ may also be used.

[0025] If the PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with a spatial setting for the PUCCH transmission, or if the PUSCH transmission is scheduled by DCI format 0_1 ​​that does not include an SRI field, or if the UE is not provided with a power control setting for the PUSCH by the SRI, the UE shall select an RS resource index q with an ID of a path loss reference RS of zero. ｄ may also be used.

[0026] For PUSCH transmission configured by a configured grant configuration (e.g., ConfiguredGrantConfig), if the configured grant configuration includes a specific parameter (e.g., rrc-ConfiguredUplinkGrant), the RS resource index q is determined by a path loss reference index (e.g., pathlossReferenceIndex) in the specific parameter. ｄ may be provided to the UE.

[0027] For the PUSCH transmission configured by the configuration grant configuration, if the configuration grant configuration does not include a specific parameter, the UE may determine the RS resource index q from the value of the ID of the path loss reference RS mapped to the SRI field in the DCI format that activates the PUSCH transmission. ｄ If the DCI format does not include an SRI field, the UE may determine an RS resource index q with an ID of a pathloss reference RS of zero. ｄ may be determined.

[0028] Δ ＴＦ，ｂ，ｆ，ｃ(i) is the transmission power adjustment component (offset, transmission format compensation) for UL BWP b of carrier f of serving cell c.

[0029] f ｂ，ｆ，ｃ (i, l) is the PUSCH power control adjustment state for the active UL BWP b of carrier f of serving cell c at transmission opportunity i. ｂ，ｆ，ｃ (i,l) may be based on δPUSCH,b,f,c(i,l).

[0030] If TPC accumulation is valid, f ｂ，ｆ，ｃ (i,l) may be based on the accumulated value of δPUSCH,b,f,c(m,l).

[0031] If TPC accumulation is invalid, f ｂ，ｆ，ｃ (i,l) may be δPUSCH,b,f,c(i,l) (absolute value).

[0032] If information indicating that TPC accumulation is disabled (TPC-Accumulation) is not set (if information indicating that TPC accumulation is disabled is not provided, and TPC accumulation is set to be enabled), the UE accumulates TPC command values ​​and determines the transmit power based on the accumulation result (power control state) (applies the TPC command values ​​via accumulation).

[0033] When information indicating that TPC accumulation is disabled (TPC-Accumulation) is set (when information indicating that TPC accumulation is disabled is provided, when TPC accumulation is set to disabled), the UE does not accumulate TPC command values ​​and determines the transmission power based on the TPC command values ​​(power control state) (applies the TPC command values ​​without using accumulation).

[0034] δPUSCH,b,f,c(i,l) may be the TPC command value included in DCI format 0_0 or DCI format 0_1 ​​that schedules PUSCH transmission opportunity i on active UL BWP b of carrier f of serving cell c, or the TPC command value jointly coded with other TPC commands in DCI format 2_2 with CRC scrambled by a specific Radio Network Temporary Identifier (RNTI) (e.g., TPC-PUSCH-RNTI).

[0035] Σ m=0 C(Di)-1 δPUCCH,b,f,c(m,l) is the cardinality C(D i ) a set of TPC command values ​​D i It may be the sum of the TPC command values ​​in i is the number of PUSCH transmission opportunities i-i0 on the active UL BWP b of carrier f of serving cell c for the PUSCH power control adjustment state l. PUSCH (i-i0)-1 symbols ago and K of PUSCH transmission opportunity i PUSCH (i) may be the set of TPC command values ​​received between symbols (i) and (ii) for PUSCH transmission opportunity i-i. PUSCH (i-i0) symbols ago is K of PUSCH transmission opportunity i PUSCH (i) It may be the smallest positive integer that is earlier than the symbol before.

[0036] If PUSCH transmission is scheduled by DCI format 0_0 or DCI format 0_1, K PUSCH (i) may be the number of symbols in the active UL BWP b of carrier f of serving cell c after the last symbol of the corresponding PDCCH reception and before the first symbol of the PUSCH transmission. If PUSCH transmission is configured by configured grant configuration information (ConfiguredGrantConfig), then K PUSCH (i) is the number of symbols per slot N in the active UL BWP b of carrier f of serving cell csymb slot and the minimum value of the value provided by k2 in the PUSCH common configuration information (PUSCH-ConfigCommon). PUSCH,min It may also be the number of symbols.

[0037] The power control adjustment state may be configured to have multiple states (e.g., two states) or a single state depending on a higher layer parameter. When multiple power control adjustment states are configured, one of the multiple power control adjustment states may be identified by an index l (e.g., l∈{0, 1}).

[0038] The transmission power of the PUCCH, the transmission power of the SRS, and the transmission power of the PUSCH are set to the maximum output power P ＣＭＡＸ，ｆ，ｃ（ｉ） is limited by

[0039] (Nominal maximum output power / set maximum output power) The UE power class specifies the maximum output power (nominal maximum output power, nominal UE power, UE maximum output power) for the transmission bandwidth within the channel bandwidth of the NR carrier.

[0040] As an example in Figure 1, a nominal maximum output power P_PowerClass is defined for each UE power class and band. Power Class 1 is defined for public safety only. Power Class 1.5 is defined for UEs with dual transmission (Tx). Power Class 2 is defined for high power UEs. Power Class 3 is defined for handheld cellular UEs.

[0041] Class 3, with 23 dBm, is the default power class, which is derived based on a specific absorption rate (SAR) assumption that 100% of a resource is used for UL transmission.

[0042] The settings (upper and lower bounds) of P_CMAX are defined by the following equation:

[0043]

[0044] where P_EMAX,c is the value given by the p-Max information element or additionalPmax for serving cell c (maximum allowed UE output power signaled by higher layers), and ΔP_PowerClass is the adjustment to the nominal maximum output power P_PowerClass for a given power class, which is a duty cycle dependent power constraint.

[0045] In any of the following states (conditions) 1 to 4, P_PowerClass>0. If the state is not any of states 1 to 4, P_PowerClass=0.

[0046] [State 1] If any of the following conditions are met, ΔP_PowerClass=3 dB for a Power Class (PC) 2 UE and ΔP_PowerClass=6 dB for a PC1.5 UE: ​​- A p-Max of 23 dBm or less is indicated; - The UECapabilitymaxUplinkDutyCycle-PC2-FR1 field is not present, the UECapabilitymaxUplinkDutyCycle-MPE-FR1 field is not present, and the percentage of UL symbols transmitted within a certain evaluation period is higher than 50%; - The UECapabilitymaxUplinkDutyCycle-PC2-FR1 field is present, and the percentage of UL symbols transmitted within a certain evaluation period is higher than maxUplinkDutyCycle-PC2-FR1 (the exact evaluation period is shorter than one radio frame). The field UE capability maxUplinkDutyCycle-MPE-FR1 is present and the percentage of UL symbols transmitted in an evaluation period is higher than maxUplinkDutyCycle-MPE-FR1 (the exact evaluation period is shorter than one radio frame).

[0047] State 2: ΔP_PowerClass=3 dB for a PC1.5 UE if any of the following conditions are met: A p-Max between 23 dBm and 26 dBm is indicated; The UECapabilitymaxUplinkDutyCycle-PC2-FR1 field is not present, the UECapabilitymaxUplinkDutyCycle-MPE-FR1 field is not present, and the percentage of UL symbols transmitted within a certain evaluation period is between 25% and 50%; The UECapabilitymaxUplinkDutyCycle-PC2-FR1 field is present, and the percentage of UL symbols transmitted within a certain evaluation period is between maxUplinkDutyCycle-PC2-FR1 and maxUplinkDutyCycle-PC2-FR1 / 2 (the exact evaluation period is shorter than one radio frame). The field UE capability maxUplinkDutyCycle-MPE-FR1 is present and the percentage of UL symbols transmitted in an evaluation period is higher than maxUplinkDutyCycle-MPE-FR1 (the exact evaluation period is shorter than one radio frame).

[0048] [State 3] If the UE is configured with supplemental uplink (SUL) configuration and in the band in which the UE exhibits power class 2, the default power class requirements specified in the specification apply, then ΔP_PowerClass=3 dB.

[0049] [State 4] If a PC2 capable UE with transmit diversity (txDiversity-r16) capability or a PC1.5 capable UE indicates SRS transmit switch (SRS-TXSwitch) capability 't1r2' or 't1r4' or 't1r1-t1r2' or 't1r1-t1r2-t1r4', then ΔP_PowerClass=3dB applies during SRS transmission occasions with SRS resources configured in each SRS resource set consisting of one SRS port and with usage in the SRS-ResourceSet set to 'antennaSwitching'.

[0050] Rel. 17 NR defines a high-power UE, which can transmit using power greater than 23 dBm. 23 dBm is considered the default PC (PC3). 23 dBm is derived based on the SAR requirement when the UE transmits UL on 100% of a given resource.

[0051] (Full Power UL Transmission) For UL transmission, three solutions are adopted depending on the UE's Power Amplifier (PA) (Fig. 2).

[0052] Mode 0 corresponds to a UE equipped with a fully rated PA [4] (maximum power not less than the maximum power of the PowerClass) for all antenna ports. For example, the power of each antenna port is 23 dBm. In this case, the scaling factor is fixed to 1 in all precoders. Note that the maximum output power of a UE in Power Class 3 is 23 dBm.

[0053] Mode 1 applies to UEs in which the output power of all (or some) antenna ports is less than 23 dBm. Since the performance of the UE may not improve even if it supports all non-antenna selection precoders, some precoders are introduced.

[0054] Mode 2 applies to UEs equipped with a full-rated PA [4] (maximum power not less than the maximum power of the PowerClass) for all antenna ports. The UE reports a precoder that enables full power to the NW. In this case, the scaling factor in the reported precoder is fixed to 1.

[0055] <Mode 0> A UE in Mode 0 does not reduce its transmit power by a scaling factor. In Rel. 16 and later, for example, the UE can achieve full power no matter what Transmitted Precoding Matrix Indicator (TPMI) index is instructed to the UE by the network. To fix the scaling factor to 1, the amplitude values ​​of all precoders have been changed from Rel. 15.

[0056] Figure 3 shows codebooks for rank = 1 in Rel. 15 and Rel. 16. Specifically, Figure 3 shows codebook subsets for single-layer transmission using four antenna ports (DFT-S-OFDM) in Rel. 15 and 16. In Rel. 15, the codebook corresponding to full power was not applied in the cases of TPMI index 0-7. In Rel. 16, the codebook corresponding to full power is applied even in the cases of TPMI index 0-7.

[0057] <Mode 1> Figure 4 shows the codebook subset for Mode 1, rank = 1 in Rel. 15 and Rel. 16. Mode 1 UEs support a precoder with a fixed scaling factor of 1 in addition to the current precoder. However, relative phase errors may occur between non-coherent antenna ports. Rel. 16 allows UEs with multiple non-coherent antennas to use partial or full coherent precoders, enabling full-power transmission. For example, a UE that was unable to transmit at full power for a specific TPMI index in Rel. 15 can now transmit at full power in Rel. 16.

[0058] <Mode 2> Figure 5 shows an example of a precoder for two-port transmission in Mode 2 in Rel. 16. Figure 6 shows an example of a precoder / TPMI group for four-port transmission in Mode 2 in Rel. 16. A Mode 2 UE may report several precoders that support full power, depending on the UE's PA architecture.

[0059] The power of each UE shown in Figure 6 is the maximum output power (maximum 23 dBm) for each equipped PA. In the example of Figure 6, a UE with codebookSubset set to nonCoherent reports one group from G0-G3. A UE with codebookSubset set to partialAndNonCoherent reports at least one group from G0-G3 and one group from G0-G6.

[0060] Figure 7 is a diagram showing an example of a codebook corresponding to a mode 2 UE and rank = 1 in Rel. 16. As shown in Figure 7, in mode 2, some precoders support full power transmission. When applying mode 2, the UE may report a precoder that supports full power transmission and is fixed at a scaling factor of 1 to the NW as capability information. This allows the NW to know the precoder / TPMI that supports full power transmission.

[0061] <Power Class (PC) 2> The above modes 0 to 2 (FIGS. 2 to 7) are primarily intended for the case of power class (PC) 3. On the other hand, when PC1.5 / PC2 is taken into consideration, more diverse PA architectures can be considered.

[0062] Figures 8A and 8B show a first example of the transmit power of each PA of PC2. Figure 8A shows an architecture equivalent to the basic PA architecture, i.e., full power mode is not supported. Figure 8B shows a PA architecture corresponding to G0 in mode 2. For each PA, applying MIMO increases the maximum transmit power by 3 dB. In the example of Figures 8A and 8B, using four antenna ports makes it possible to achieve 26 dBm.

[0063] 9 shows a second example of the transmit power of each PA of PC2. In the example of FIG. 9, 23 dBm / 26 dBm is achieved at a specific port. The example of FIG. 9 is equivalent to G0 and G4 of mode 2.

[0064] <PA Architecture and Maximum Transmit Power in Each Case> Fig. 10 is a diagram showing an example of a PA architecture and maximum transmit power of a UE supporting two-antenna port transmission. As shown in Fig. 10, in the case of full power transmission in Mode 0, the maximum transmit power differs depending on whether two ports are used or one port is used. For example, even if the maximum power of each port is 23 dBm, applying two-port MIMO makes it possible to achieve 26 dBm.

[0065] Figure 11 shows an example of the PA architecture and maximum transmit power of a UE supporting four-antenna port transmission. The PA architectures for modes 1 and 2 of full-power mode transmission and non-full-power cases are omitted because they are similar to those in Figure 6. In addition, in the case of full-power transmission in mode 0, the maximum transmit power differs depending on whether four ports are used, two ports are used, or one port is used. For example, even if the maximum power of each port is 23 dBm, applying two-port MIMO makes it possible to achieve 26 dBm / 29 dBm.

[0066] (Analysis) A ΔP_PowerClass report is considered for the gNB / NW to understand the current status of the UE, but it is not clear how to report the ΔP_PowerClass. For example, a ΔP_PowerClass report based on a duty cycle method is being considered. The ΔP_PowerClass report is limited to cases where the set duty cycle is exceeded. In addition, to ensure more rational UL scheduling, the full power transmission capability corresponding to the current reference power class may also be reported.

[0067] For UEs of power class 2 or higher, UL transmissions above 23 dBm can be performed under duty cycle rules. For UEs with full power mode capability, the maximum output power may vary depending on the PA architecture and full power mode.

[0068] Depending on the UE's state of the duty cycle associated with maximum output power transmission, the benefit / feasibility of full power transmission may also vary. For example, if the UE is not capable of 26 dBm transmission and reports Mode 0 in PC2, ideally one should not expect full power Mode 0, as the maximum output power is the same as a non-full power mode.

[0069] Also, for example, if a UE cannot use full power but can use the second highest power, in the example of Figure 8A, full coherent achieves PC2, partial coherent achieves PC3, and non-coherent cannot achieve 23 dBm. Also, in the example of Figure 8B, full coherent achieves PC2, partial coherent achieves PC2 or PC3, and non-coherent achieves less than PC2 or PC3. In the example of Figure 9, full coherent achieves PC2, partial coherent achieves PC2 or PC3, and non-coherent achieves less than PC2 or PC3.

[0070] For the above reasons, it is preferable for the network (base station) to grasp information such as whether the full power mode is available to the UE, the nominal maximum output power (ΔP_PowerClass) corresponding to the full power mode, or the TPMI corresponding to the maximum output power. However, the method for reporting this information is not clear. If this information is not clear, for example, the network cannot set appropriate power control for the UE, which may cause the UE to be unable to perform appropriate power control, resulting in a decrease in communication throughput.

[0071] Therefore, the present inventors came up with the idea of ​​a method that enables appropriate settings regarding power control.

[0072] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0073] (Various Alternative Readings, etc.) In the present disclosure, "A / B" and "at least one of A and B" may be interchangeable. Also, in the present disclosure, "A / B / C" may mean "at least one of A, B, and C."

[0074] In the present disclosure, terms such as notify, activate, deactivate, indicate (or indicate), select, configure, update, and determine may be read interchangeably. In the present disclosure, terms such as support, control, controllable, operate, and operate may be read interchangeably.

[0075] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, fields, information elements (IEs), settings, etc. may be interchangeable. In the present disclosure, Medium Access Control (MAC) control elements (CEs), update commands, activation / deactivation commands, etc. may be interchangeable.

[0076] In the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, other messages (e.g., messages from the core network such as positioning protocol (e.g., NR Positioning Protocol A (NRPPa) / LTE Positioning Protocol (LPP)) messages), or a combination thereof.

[0077] In the present disclosure, MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. Broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0078] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0079] In the present disclosure, the terms index, identifier (ID), indicator, resource ID, etc. may be interchangeable. In the present disclosure, the terms sequence, list, set, group, cluster, subset, etc. may be interchangeable.

[0080] In the present disclosure, the terms panel, UE panel, panel group, beam, beam group, precoder, Uplink (UL) transmitting entity, Transmission / Reception Point (TRP), base station, Spatial Relation Information (SRI), spatial relation, SRS Resource Indicator (SRI), Control Resource Set (CORESET), Physical Downlink Shared Channel (PDSCH), Codeword (CW), Transport Block (TB), Reference Signal (RS), antenna port (e.g., Demodulation Reference Signal (DMRS) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, Code Division Multiplexing (CDM) group, reference signal group, CORESET group, Physical Uplink Control Channel (PUCCH) group, PUCCH resource group), resource (e.g., reference signal resource, SRS resource), resource set (e.g., reference signal resource set), CORESET pool, downlink Transmission Configuration Indication state (TCI state) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, Quasi-Co-Location (QCL), QCL assumption, etc. may be read as interchangeable.

[0081] In the present disclosure, base station, gNB, and network (NW) may be read interchangeably.

[0082] In the present disclosure, nominal maximum output power, nominal UE power, UE maximum output power, maximum UE power, maximum output power, maximum output power defined for a power class, P_PowerClass, P PowerClass , may be read interchangeably. In the present disclosure, the adjustment to the maximum output power for a given power class, the adjustment to the nominal maximum output power, ΔP_PowerClass, ΔP PowerClass , may be read interchangeably.

[0083] In the present disclosure, configured maximum output power, configured transmit power, UE configured maximum output power, configured maximum UE output power, actual maximum output power, maximum output power, maximum power, P_CMAX, P CMAX,f,c (i) may be interchangeable. In the present disclosure, the UE power class, power class, and PC may be interchangeable.

[0084] In the present disclosure, the terms TPMI, TPMI index, TPMI code point, TPMI group, precoder, precoding matrix, and codebook may be interchangeable.

[0085] (Wireless communication method) <First embodiment> A UE may dynamically / semi-statically transmit (report) information regarding whether the full power mode is available, and may execute the full power mode in UL transmission based on the transmitted information. This report may be transmitted in a manner different from the existing UE capability information. This allows the NW / gNB to identify whether the full power mode is actually available more quickly than by using the existing UE capability information.

[0086] [Option 1] The content of the information about whether the full power mode is available or not is, for example, at least one of the following options 1-1 to 1-2.

[0087] Option 1-1: Available full power modes, for example, at least one of modes 0, 1, and 2. The mode to report may be selected from the full power modes supported by the UE.

[0088] Option 1-1': One or more TPMIs available for full power UL transmission.

[0089] Option 1-2: A time period in which the supported / configured full power mode (Option 1-1 / 1-1') is applied. The time period may be indicated by at least one of the start timing, end timing, length, and period of the time period.

[0090] [Option 2] The method of reporting the information regarding whether the full power mode is available is at least one of the following options 2-1 to 2-4. That is, the information regarding whether the full power mode is available may be included in at least one of the following information / elements: Option 2-1: UCI on PUSCH. Option 2-2: UCI on PUCCH. Option 2-3: MAC CE in PUSCH. At least one of a new MAC CE and an existing MAC CE (for example, Power Headroom Reporting (PHR MAC CE, etc.)) may be applied. That is, the information regarding whether the full power mode is available may be transmitted in a MAC CE that does not include other information, or may be included in one MAC CE together with other information. Option 2-4: RRC information element (RRC signaling).

[0091] The PUCCH / PUSCH containing information on whether full power mode is available may be assigned a higher (or lower) priority than other PUCCH / PUSCHs. If a PUCCH / PUSCH assigned a lower priority overlaps with a PUCCH / PUSCH assigned a higher priority, the UE may cancel the transmission of the PUCCH / PUSCH assigned a lower priority.

[0092] [Option 3] The time domain operation (reporting timing) of reporting information regarding whether the full power mode is available may be at least one of the following: Option 3-1: Aperiodic (e.g., reporting is triggered by DCI). Option 3-2: Periodic (e.g., the periodicity is set by RRC). Option 3-3: Semi-persistent (e.g., reporting timing is set by RRC, and reporting is turned on / off by DCI or DL ​​MAC CE). Option 3-4: Event triggered. Fig. 12 is a diagram showing an example of Option 3-4 of the first embodiment. For example, the UE may transmit information regarding whether the full power mode is available (S102) when a specific event occurs (YES in S101).

[0093] As an example of an event for option 3-4, at least one of the following 3-1-1 to 3-1-3'' may be applied. For example, a combination of the following conditions may be applied as an event. 3-1-1: When high power / full power UL transmission (e.g., UL transmission with a power of 23 dBm or more) becomes possible. 3-1-1': When high power / full power UL transmission (e.g., UL transmission with a power of 23 dBm or more) becomes impossible. 3-1-2: When the Power Management Maximum Power Reduction (P-MPR) value is changed. 3-1-2': When the P-MPR value is notified. 3-1-2'': When the P-MPR value becomes higher / lower than the threshold. 3-1-3: When ΔP_PowerClass is changed. 3-1-3': When ΔP_PowerClass is notified. 3-1-3'': When ΔP_PowerClass becomes higher / lower than the threshold.

[0094] [Option 4] The UE's behavior when (or after) information regarding whether the full power mode is available is reported may be one of the following options 4-1 to 4-2''. Execute and can execute may be interchangeable. Do not execute and cannot execute may be interchangeable. Option 4-1: The UE executes the specific full power mode (e.g., mode 0, 1, or 2). Option 4-1': The UE executes the specific full power mode during the reported period. Option 4-1'': The UE executes the specific full power mode until the next report. Option 4-2: The UE does not execute the specific full power mode (e.g., mode 0, 1, or 2). Option 4-2': The UE does not execute the specific full power mode during the reported period. Option 4-2'': The UE does not execute the specific full power mode until the next report.

[0095] In Options 4-1 to 4-1'', "execute (can execute) (specific) full power mode" may be read as at least one of the following. Alternatively, the UE may execute any of Options 4-1 to 4-1'' after at least one of the following operations: - Full power mode (full power mode / full power mode 1 / full power mode 2) is set / indicated. - The TPMI table for full power mode is referenced. - The TPMI for full power mode is indicated.

[0096] In options 4-2 to 4-2'', "(Specific) full power mode is not executed (cannot be executed)" may be read as at least one of the following. Alternatively, the UE may execute any of options 4-2 to 4-2'' after at least one of the following operations: - Full power mode is set and the TPMI for full power mode is referenced, but the TPMI for full power mode is not indicated (cannot be indicated). - Full power mode is set, but the TPMI for full power mode is not referenced.

[0097] <Second embodiment> [Embodiment 2.1] The UE may transmit to the NW the relationship between an adjustment value (ΔP_PowerClass) for the nominal maximum output power P_PowerClass and the full power mode (whether the full power mode is available or not). Then, the UE may transmit (report) information indicating the ΔP_PowerClass corresponding to the full power mode to the NW, thereby implicitly notifying whether the full power mode is available or not. The above relationship may be defined in the specifications. This allows the NW / gNB to identify whether the full power mode is actually available or not more quickly than by using existing UE capability information, without the UE having to make a new report.

[0098] <<Option 1>> The relationship between ΔP_PowerClass and full power mode may be at least one of the following: Option 1-1: If the UE reports ΔP_PowerClass=0, it can execute any full power mode (this may be subject to the UE's capability for supporting full power mode). If the UE reports ΔP_PowerClass>0, it cannot execute full power mode. Option 1-2: If the UE reports ΔP_PowerClass=0, it can execute full power mode 0. If the UE reports ΔP_PowerClass>0, it cannot execute full power mode 0. Option 1-3: Depending on the reported value of ΔP_PowerClass, it may be indicated that different full power modes are available. If the UE reports ΔP_PowerClass=0, it can execute at least one of full power modes 0, 1, and 2. If the UE reports ΔP_PowerClass=3, it can execute at least one of full power modes 1 and 2. If the UE reports ΔP_PowerClass=6, it cannot execute any full power mode.

[0099] The values ​​(0, 3, 6) of ΔP_PowerClass in options 1-1 to 1-3 may be replaced with other values.

[0100] <<Option 2>> The condition for applying the relationship between ΔP_PowerClass and full power mode may be at least one of the following: Option 2-1: The reported relationship is valid unless a new report is made. Option 2-2: The reported relationship is valid for a specific period. The specific period may be defined / set / indicated by at least one of the following methods: defined in a specification, set by RRC, indicated by MAC CE, or indicated by DCI. Option 2-3: The UE may report the period for applying the relationship together with the above relationship.

[0101] [Embodiment 2.2] The UE may transmit to the NW a relationship between an adjustment value (ΔP_PowerClass) for the nominal maximum output power P_PowerClass and a precoder that can achieve the full power mode. Then, the UE may transmit (report) information indicating ΔP_PowerClass corresponding to a precoder that can achieve the full power mode to the NW, thereby implicitly notifying the NW of a precoder that can achieve the full power mode. The above relationship may be defined in the specification. This allows the NW / gNB to identify a precoder that can achieve the full power mode more quickly than using existing UE capability information, without the UE having to make a new report.

[0102] <<Option 1>> The relationship between ΔP_PowerClass and precoders that can achieve the full power mode may be at least one of the following: Option 1-1: If the UE reports ΔP_PowerClass=0, it can apply any precoder it supports. If the UE reports ΔP_PowerClass>0, it cannot apply a fully coherent precoder. Option 1-2: The UE can use different sets of precoders depending on the reported value of ΔP_PowerClass. If the UE reports ΔP_PowerClass=0, it can apply any precoder (full / partial / non-coherent). If the UE reports ΔP_PowerClass=3, it can only apply a partial / non-coherent precoder. If the UE reports ΔP_PowerClass=6, it can only apply a non-coherent precoder. Option 1-3: If the UE does not report ΔP_PowerClass, it may implicitly indicate a specific ΔP_PowerClass (e.g., ΔP_PowerClass=0, 3, or 6). The application of the precoder in this case may be the same as in option 1-1 or 1-2.

[0103] <<Option 2>> The condition for applying the relationship between ΔP_PowerClass and a precoder that can achieve the full power mode may be at least one of the following: Option 2-1: The reported relationship is valid unless a new report is made. Option 2-2: The reported relationship is valid for a specific period. The specific period may be defined / set / indicated by at least one of the following methods: defined in a specification, set by RRC, indicated by MAC CE, or indicated by DCI. Option 2-3: The UE may report the period for applying the relationship together with the above relationship.

[0104] Third Embodiment A UE may transmit (report) information about a TPMI to a NW and control UL transmission using a maximum output power corresponding to the TPMI. The information corresponds to the maximum available output power. This allows the NW to identify which precoder / TPMI should be applied / instructed to enable the UE to output the maximum power.

[0105] [Option 1] The UE may transmit at least one piece of information from the following options 1-1 to 1-5.

[0106] Option 1-1: One or more TPMI code points and the maximum output power that the corresponding TPMI can achieve. For example, information indicating the mapping between the TPMI code points and the maximum output power.

[0107] Option 1-2: One or more TPMI code points and the maximum output power that the corresponding TPMI can achieve (a relative value to the power corresponding to the power class). For example, information indicating the mapping between the TPMI code point and the maximum output power.

[0108] Options 1-3: One or more TPMI code points and the maximum output power that the corresponding TPMI can achieve (relative to the power class and the power corresponding to the reported ΔP_PowerClass).

[0109] Options 1-4: An index corresponding to one or more TPMI codepoints and the maximum output power (relative to the power corresponding to the power class and reported ΔP_PowerClass) that the corresponding TPMI can achieve.

[0110] Option 1-5: One or more antenna ports and the maximum output power achievable by the corresponding antenna ports. For example, information indicating the mapping between the TPMI (or the antenna port) and the maximum output power using the corresponding antenna ports.

[0111] The granularity of the power range corresponding to the TPMI (i.e., the number of columns of maximum power in FIGS. 13A, 13B, and 14 described below) may vary depending on the power class. For example, if the UE supports power class 2, the columns of 26 dBm and 23 dBm may apply. For example, if the UE supports power class 1.5, the columns of 29 dBm, 26 dBm, and 23 dBm apply.

[0112] Figures 13A and 13B are diagrams illustrating a first example of option 1 of the third embodiment. In Figures 13A and 13B, a UE supports power class 2 and full power mode of G0. The PA architecture corresponds to the example in Figure 8B. Figure 13A shows the correspondence between TPMI code points (bit field mapped to index), TPMI values, and maximum power. Figure 13B shows the correspondence between TPMI code points (bit field mapped to index), antenna port indexes, and maximum power.

[0113] Fig. 14 is a diagram illustrating a second example of Option 1 of the third embodiment. Fig. 14 illustrates the correspondence between TPMI code points (bit field mapped to index), TPMI values, and maximum power when a UE supports power class 2 and full power modes of G0 and G4. The PA architecture corresponds to the example in Fig. 9.

[0114] Variation: Instead of the TPMI (TPMI code point) of options 1-1 to 1-4, the UE may transmit (report) information indicating a set / subset / group of TPMI to the NW. That is, the TPMI / TPMI code point of options 1-1 to 1-4 may be read as a set / subset / group of TPMI.

[0115] The set / subset / group of TPMIs may be defined in a specification or may be configured / indicated by at least one of RRC signaling, MAC CE, and DCI.

[0116] [Option 2] A method of transmitting (reporting) information about TPMI shown in Option 1 will be described. The information may be transmitted in at least one of the following ways.

[0117] Option 2-1: UCI on PUSCH. Option 2-2: UCI on PUCCH. Option 2-3: MAC CE in PUSCH. At least one of a new MAC CE (e.g., a MAC CE including only information related to the TPMI) and an existing MAC CE (e.g., Power Headroom Reporting (PHR MAC CE)) may be applied. That is, information related to the TPMI may be transmitted in a MAC CE that does not include other information, or may be included in one MAC CE together with other information. Option 2-4: Signaling of UE capability information. For example, at least one of ul-FullPwrMode2-TPMIGroup-r16, ul-FullPwrMode2-SRSConfig-diffNumSRSPorts-r16, and ul-FullPwrMode2-MaxSRS-ResInSet-r16. Option 2-5: Other RRC information elements (RRC signaling).

[0118] When combining option 2 of the first embodiment with option 2 of this embodiment, the UE may transmit information about whether full power mode is available and information about TPMI in the same (or different) manner.

[0119] [Option 3] After the UE transmits (reports) information related to the TPMI indicated in Option 1, the UE may perform at least one of the following operations: For example, the UE receives a setting / instruction related to the reported TPMI through higher layer signaling / physical layer signaling, and controls full power UL transmission based on the setting / instruction (Options 3-1 to 3-4).

[0120] Option 3-1: The UE can perform full power UL transmission if the reported TPMI is configured / indicated by higher layer signaling / physical layer signaling.

[0121] Option 3-2: The UE can perform full power UL transmission if a TPMI other than the reported TPMI is configured / indicated by higher layer signaling / physical layer signaling.

[0122] Option 3-3: The UE can perform full power UL transmission if the reported TPMI is not configured / indicated by higher layer signaling / physical layer signaling.

[0123] Option 3-4: The UE can perform full power UL transmission if no TPMI other than the reported TPMI is configured / indicated by higher layer signaling / physical layer signaling.

[0124] Option 3-5: In the UL scheduling DCI, the UE does not assume / expect the reported TPMI to be indicated.

[0125] Option 3-6: In the UL scheduling DCI, the UE does not assume / expect a TPMI other than the reported TPMI to be indicated.

[0126] Option 3-7: If the indicated TPMI uses one or more antenna ports corresponding to the maximum output power reported by the UE, the UE may perform full power UL transmission.

[0127] Option 3-8: The UE does not expect to be indicated with a TPMI that uses an antenna port that does not correspond to the maximum output power reported by the UE.

[0128] Option 3-9: The UE does not expect a specific TPMI to be indicated, where the maximum output power reported by the UE corresponding to the specific TPMI is greater than the actual maximum output power.

[0129] <Supplementary Information> [Applicability of Each Embodiment] The applicability of at least one option in each embodiment may be restricted based on at least one of the following conditions: The following 1 to 4 may be transmitted from the UE as UE capability information.

[0130] 1: Whether the UE supports full power mode. 2: Whether the UE supports full power mode 0. 3: Whether more than one full power mode is available. For example, whether the operating bands in the operating band combination support full power mode. Or, for example, whether the operating bands in the operating band combination support full power mode 0. 4: Whether the UE supports a power class higher than PC3 (for example, power class 1.5 or 2).

[0131] [Various Interpretations] "Utilizing / executing / achieving a full power mode (e.g., a specific full power mode)" may be rephrased as at least one of the following: - A full power mode (e.g., fullpowerMode, fullpowerMode1, fullpowerMode2) is set / is set. - A TPMI table for full power mode is referenced. - A TPMI for full power mode is set / indicated.

[0132] "Full power mode (e.g., a specific full power mode) cannot be used / executed / achieved" may be interpreted as at least one of the following: - Full power mode is set and the TPMI for full power mode is referenced, but the TPMI for full power mode is not set / instructed. - Full power mode is set / instructed, but the TPMI for full power mode is not referenced.

[0133] The "precoder (precoder index)" may be replaced with at least one of the following: TPMI; TPMI index; TPMI code point; TPMI indication.

[0134] TPMI may be read as "precoding information and number of layers" or "second precoding information."

[0135] [Notification of Information to UE] In the above-described embodiments, any information may be notified to the UE (from a network (NW) (e.g., a base station (BS))) (in other words, reception of any information from the BS by the UE) using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal / channel (e.g., PDCCH, PDSCH, reference signal), or a combination thereof.

[0136] When the notification is performed by a MAC CE, the MAC CE may be identified by including a new Logical Channel ID (LCID) in the MAC subheader, which is not defined in existing standards.

[0137] When the notification is made by DCI, the notification may be made by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used to scramble Cyclic Redundancy Check (CRC) bits assigned to the DCI, the format of the DCI, etc.

[0138] Furthermore, notification of any information to the UE in the above embodiments may be performed periodically, semi-persistently, or aperiodically.

[0139] [Notification of Information from UE] In the above-described embodiments, notification of any information from the UE (to the NW) (in other words, transmission / report of any information from the UE to the BS) may be performed using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal / channel (e.g., PUCCH, PUSCH, PRACH, reference signal), or a combination thereof.

[0140] When the notification is performed by a MAC CE, the MAC CE may be identified by including a new LCID, which is not defined in existing standards, in the MAC subheader.

[0141] If the notification is made by UCI, the notification may be transmitted using PUCCH or PUSCH.

[0142] Furthermore, any information in the above-described embodiments may be notified from the UE periodically, semi-persistently, or aperiodically.

[0143] [Application of Each Embodiment] At least one of the above-described embodiments may be applied when a specific condition is met. The specific condition may be defined in a standard or may be notified to a UE / BS using higher layer signaling / physical layer signaling.

[0144] At least one of the above-described embodiments may be applied only to UEs that have reported or support a specific UE capability. Note that "supporting" and "whether to support" may be interpreted as interchangeable.

[0145] The particular UE capability may indicate support for particular processes / operations / controls / information for at least one of the above embodiments.

[0146] Furthermore, the above-mentioned specific UE capability may be a capability that is applied across all frequencies (commonly regardless of frequency), or may be a capability for each frequency (e.g., one or a combination of a cell, a band, a band combination, a BWP, a component carrier, etc.), or may be a capability for each frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or may be a capability for each subcarrier spacing (SubCarrier Spacing (SCS)), or may be a capability for each Feature Set (FS) or Feature Set Per Component-carrier (FSPC).

[0147] Furthermore, the specific UE capability may be a capability that is applied to all duplexing methods (commonly regardless of the duplexing method), or may be a capability for each duplexing method (e.g., Time Division Duplex (TDD) or Frequency Division Duplex (FDD)).

[0148] Furthermore, at least one of the above-described embodiments may be applied when the UE configures / activates / triggers specific information related to the above-described embodiment (or performs the operations of the above-described embodiment) through higher layer signaling / physical layer signaling. For example, the specific information may be any RRC parameter for a specific release (e.g., Rel. 18 / 19), etc.

[0149] If the UE does not support at least one of the specific UE capabilities or is not configured with the specific information, the UE may apply, for example, the behavior of Rel. 15 / 16 / 17.

[0150] (Supplementary Notes) The following inventions are supplementary notes regarding one embodiment of the present disclosure. [Supplementary Note 1] A terminal having: a transmitter that transmits information regarding whether a full power mode is available in uplink control information (UCI) or medium access control element (MAC CE); and a controller that executes the full power mode based on the information in uplink (UL) transmission. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein the transmitter transmits the information when a specific event occurs. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein the transmitter transmits information indicating an adjustment value to a nominal maximum output power that corresponds to the full power mode. [Supplementary Note 4] The terminal according to any of Supplements 1 to 3, wherein the transmitter transmits information indicating an adjustment value to a nominal maximum output power that corresponds to a precoder that can achieve the full power mode.

[0151] (Supplementary Notes) The following inventions are further supplemented with respect to one embodiment of the present disclosure. [Supplementary Note 1] A terminal having: a transmitter that transmits information about a Transmitted Precoding Matrix Indicator (TPMI); and a controller that controls uplink (UL) transmission using a maximum output power corresponding to the TPMI. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein the information indicates one or more TPMI code points and a maximum output power that the corresponding TPMI can achieve. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein the transmitter transmits the information in Uplink Control Information (UCI), Medium Access Control Element (MAC CE), UE capability information signaling, or RRC signaling. [Supplementary Note 4] The terminal according to any of Supplements 1 to 3, further having a receiver that receives a setting related to the TPMI, and wherein the controller controls the UL transmission at full power based on the setting related to the TPMI.

[0152] (Wireless Communication System) The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.

[0153] 15 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 (which may be simply referred to as system 1) may be a system that realizes communication using Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0154] The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0155] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0156] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0157] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are smaller than the macrocell C1. A user terminal 20 may be located within at least one of the cells. The locations and numbers of the cells and user terminals 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.

[0158] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CCs) and dual connectivity (DC).

[0159] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a higher frequency band than FR2.

[0160] Furthermore, the user terminal 20 may perform communication using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0161] The multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with the Common Public Radio Interface (CPRI), an X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0162] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may 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.

[0163] The core network 30 may include network functions (Network Functions (NF)) such as a User Plane Function (UPF), an Access and Mobility management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Application Function (AF), a Data Network (DN), a Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM). A single network node may provide multiple functions. Communication with an external network (e.g., the Internet) may also be performed via the DN.

[0164] The user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0165] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the wireless communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0166] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (e.g., other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0167] In the wireless communication system 1, 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. may be used as the downlink channel.

[0168] Furthermore, in the wireless communication system 1, 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)), or the like may be used as an uplink channel.

[0169] The PDSCH transmits user data, higher layer control information, a System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit a Master Information Block (MIB).

[0170] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information for at least one of the PDSCH and the PUSCH.

[0171] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as a UL grant, a UL DCI, etc. Note that the PDSCH may be replaced with DL data, and the PUSCH may be replaced with UL data.

[0172] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources for searching for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.

[0173] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. Note that the terms "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," "CORESET configuration," and the like in the present disclosure may be read interchangeably.

[0174] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0175] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning.

[0176] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted.

[0177] 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 an SS (PSS, SSS) and a PBCH (and a DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as a reference signal.

[0178] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), or the like may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).

[0179] 16 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.

[0180] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0181] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0182] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0183] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0184] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit. The transmitting unit may be configured from a transmission processing unit 1211 and an RF unit 122. The receiving unit may be configured from a reception processing unit 1212, the RF unit 122, and a measurement unit 123.

[0185] The transmitting and receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0186] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0187] The transceiver 120 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0188] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0189] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0190] The transceiver unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 130.

[0191] On the other hand, the transceiver unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 130.

[0192] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.

[0193] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0194] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30 (e.g., network nodes that provide NF), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0195] The transmitting section and receiving section of the base station 10 in the present disclosure may be configured by at least one of the transmitting / receiving section 120, the transmitting / receiving antenna 130, and the transmission path interface 140.

[0196] The transceiver 120 may receive information regarding whether the full power mode is available in Uplink Control Information (UCI) or Medium Access Control Element (MAC CE).

[0197] The controller 110 may control reception of uplink (UL) transmissions transmitted in full power mode based on the information.

[0198] The transceiver 120 may receive information related to a Transmitted Precoding Matrix Indicator (TPMI).

[0199] The control unit 110 may control reception of uplink (UL) transmissions using the maximum output power corresponding to the TPMI.

[0200] (User Terminal) Fig. 17 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0201] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0202] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, etc., which are described based on common understanding in the technical field to which the present disclosure relates.

[0203] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals and transfer them to the transceiver unit 220.

[0204] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0205] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0206] The transmitting / receiving antenna 230 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0207] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0208] The transceiver unit 220 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0209] The transceiver unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0210] The transmitter / receiver unit 220 (transmission processing unit 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0211] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and if not, it may not be necessary to perform DFT processing as the transmission processing.

[0212] The transceiver unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 230.

[0213] On the other hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 230.

[0214] The transceiver unit 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.

[0215] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0216] The measurement unit 223 may derive channel measurements for CSI calculation based on the channel measurement resources. The channel measurement resources may be, for example, non-zero power (NZP) CSI-RS resources. The measurement unit 223 may also derive interference measurements for CSI calculation based on the interference measurement resources. The interference measurement resources may be at least one of an NZP CSI-RS resource for interference measurement, a CSI-Interference Measurement (IM) resource, etc. Note that CSI-IM may be referred to as CSI-Interference Management (IM) or may be interchangeably read as Zero Power (ZP) CSI-RS. Note that in the present disclosure, CSI-RS, NZP CSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc. may be interchangeably read as interchangeable.

[0217] The transmitting unit and receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving unit 220 and the transmitting / receiving antenna 230.

[0218] The transceiver 220 may transmit information regarding whether the full power mode is available in uplink control information (UCI) or medium access control element (MAC CE).

[0219] The control unit 210 may execute a full power mode based on the information in uplink (UL) transmission.

[0220] The transmitting / receiving unit 220 may transmit the information when a specific event occurs.

[0221] The transceiver 220 may transmit information indicating an adjustment value for the nominal maximum output power corresponding to the full power mode.

[0222] The transceiver unit 220 may transmit information indicating an adjustment value to the nominal maximum output power corresponding to a precoder that can achieve the full power mode.

[0223] The transceiver 220 may transmit information related to a Transmitted Precoding Matrix Indicator (TPMI).

[0224] The controller 210 may control uplink (UL) transmission using the maximum output power corresponding to the TPMI.

[0225] The information may indicate one or more TPMI code points and the maximum output power that the corresponding TPMI can achieve.

[0226] The transceiver 220 may transmit the information in Uplink Control Information (UCI), Medium Access Control Element (MAC CE), UE capability information signaling, or Radio Resource Control (RRC) signaling.

[0227] The transceiver unit 220 may receive a setting related to the TPMI, and the controller 210 may control the full power UL transmission based on the setting related to the TPMI.

[0228] (Hardware Configuration) Note that the block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining software with the single device or the multiple devices.

[0229] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As described above, the implementation method of each is not particularly limited.

[0230] For example, a base station, a user terminal, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 18 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0231] In the present disclosure, the terms apparatus, circuit, device, section, unit, etc. may be used interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0232] For example, although only one processor 1001 is shown, there may be multiple processors. Furthermore, processing may be performed by one processor, or processing may be performed by two or more processors simultaneously, serially, or in other ways. Furthermore, processor 1001 may be implemented by one or more chips.

[0233] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading specified software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0234] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transceiver unit 120 (220), etc. may be realized by the processor 1001.

[0235] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be implemented in a similar manner.

[0236] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EEPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, cache, main memory, etc. The memory 1002 may store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.

[0237] Storage 1003 is a computer-readable recording medium and may be composed of at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.

[0238] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.

[0239] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0240] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0241] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using this hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0242] (Modifications) Note that terms described in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.

[0243] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0244] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, Subcarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, specific filtering performed by a transceiver in the frequency domain, and specific windowing performed by a transceiver in the time domain.

[0245] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may also be a time unit based on numerology.

[0246] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0247] A radio frame, a subframe, a slot, a minislot, and a symbol all represent time units for transmitting signals. The radio frame, the subframe, the slot, the minislot, and the symbol may be referred to by other names corresponding to the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be interchangeable.

[0248] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0249] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. Note that the definition of TTI is not limited to this.

[0250] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0251] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0252] A TTI having a time length of 1 ms may be called a regular TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0253] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and greater than or equal to 1 ms.

[0254] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may be determined based on numerology.

[0255] In addition, an RB may include one or more symbols in the time domain and may have a length of one slot, one minislot, one subframe, or one TTI, each of which may be composed of one or more resource blocks.

[0256] In addition, one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0257] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0258] A Bandwidth Part (BWP), which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0259] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0260] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0261] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0262] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

[0263] The names used for parameters and the like in this disclosure are not intended to be limiting in any way. Furthermore, the mathematical expressions and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0264] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0265] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via multiple network nodes.

[0266] Input and output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0267] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0268] Note that the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be referred to as an RRC message, such as an RRC Connection Setup message or an RRC Connection Reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0269] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0270] The determination may be made by a value represented by one bit (0 or 1), by a Boolean value represented by true or false, or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0271] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0272] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), these wired and / or wireless technologies are included within the definition of transmission media.

[0273] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).

[0274] In this disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "layer," "number of layers," "rank," "resource," "resource set," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," "UE panel," "transmitting entity," "receiving entity," etc. may be used interchangeably.

[0275] In the present disclosure, the term "antenna port" may be interchangeably read as an antenna port for any signal / channel (e.g., a demodulation reference signal (DMRS) port). In the present disclosure, the term "resource" may be interchangeably read as a resource for any signal / channel (e.g., a reference signal resource, an SRS resource, etc.). The resource may include time / frequency / code / space / power resources. Furthermore, the spatial domain transmission filter may include at least one of a spatial domain transmission filter and a spatial domain reception filter.

[0276] The group may include, for example, at least one of a spatial relationship group, a Code Division Multiplexing (CDM) group, a Reference Signal (RS) group, a Control Resource Set (CORESET) group, a PUCCH group, an antenna port group (e.g., a DMRS port group), a layer group, a resource group, a beam group, an antenna group, a panel group, and the like.

[0277] In addition, in the present disclosure, beam, SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, codeword (CW), transport block (TB), RS, etc. may be read as interchangeable terms.

[0278] In addition, in the present disclosure, the terms TCI state, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, joint TCI state, etc. may be read interchangeably.

[0279] Furthermore, in the present disclosure, terms such as "QCL," "QCL assumption," "QCL relationship," "QCL type information," "QCL property / properties," "specific QCL type (e.g., Type A, Type D) property," and "specific QCL type (e.g., Type A, Type D)" may be interchangeable.

[0280] In the present disclosure, terms such as index, identifier (ID), indicator, indication, and resource ID may be interchangeable. In the present disclosure, terms such as sequence, list, set, group, cluster, and subset may be interchangeable.

[0281] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and the spatial relationship information (TCI state) may be interchangeable. The "spatial relationship information (TCI state)" may be interchangeable with "set of spatial relationship information (TCI state)", "one or more pieces of spatial relationship information", etc. The TCI state and the TCI may be interchangeable. The spatial relationship information and the spatial relationship may be interchangeable.

[0282] In the present disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNB (eNodeB)," "gNB (gNodeB)," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "cell," "sector," "cell group," "carrier," "component carrier," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0283] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication service within that coverage.

[0284] In the present disclosure, a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control / operate based on the information.

[0285] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0286] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0287] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.

[0288] The mobile body is a movable object that can move at any speed and naturally includes cases where the mobile body is stationary. Examples of the mobile body include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and objects mounted thereon. The mobile body may also be a mobile body that moves autonomously based on an operation command.

[0289] The mobile object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Note that at least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0290] 19 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, an electronic control unit 49, various sensors (including a current sensor 50, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0291] The drive unit 41 is configured with at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by a user.

[0292] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (for example, an input / output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0293] The signals from the various sensors 50-58 include a current signal from a current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheels 46 / rear wheels 47 obtained by a rotation speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal of the accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of the shift lever 45 obtained by a shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58.

[0294] The information service unit 59 is composed of various devices, such as a car navigation system, an audio system, speakers, a display, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 uses information acquired from external devices via the communication module 60 or the like to provide various information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0295] The information service unit 59 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0296] The driving assistance system unit 64 includes various devices for providing functions to prevent accidents and reduce the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Units (IMUs), Inertial Navigation Systems (INSs)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driving assistance functions or autonomous driving functions.

[0297] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 to and from the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58, which are provided in the vehicle 40.

[0298] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the base station 10 or the user terminal 20 described above. Furthermore, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (or may function as at least one of the base station 10 and the user terminal 20).

[0299] The communication module 60 may transmit at least one of signals from the above-mentioned various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above-mentioned input.

[0300] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from an external device and displays it on an information service unit 59 provided in the vehicle. The information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0301] Furthermore, the communication module 60 stores various information received from external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided in the vehicle 40.

[0302] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, terms such as an uplink channel and a downlink channel may be read as a sidelink channel.

[0303] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0304] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc.), or a combination thereof.

[0305] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0306] Each aspect / embodiment described in the present disclosure may be a technology other than Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or decimal number)), 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 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802. The present invention may be applied to systems that use IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other suitable wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. Furthermore, the present invention may be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0307] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0308] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0309] The term "determining" as used in this disclosure may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, etc.

[0310] Additionally, "determining" may be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), etc.

[0311] Furthermore, "determination" may be considered to be "determining" resolving, selecting, choosing, establishing, comparing, etc. In other words, "determination" may be considered to be "determining" some kind of action. In the present disclosure, "determination" may be read interchangeably with the above-mentioned actions.

[0312] Furthermore, in this disclosure, "determine / determining" may be interchangeably read as "assume / assuming," "expect / expecting," "consider / considering," etc. Furthermore, in this disclosure, "does not expect to do..." may be interchangeably read as "assumes not to do...."

[0313] In the present disclosure, "expect" may be interchangeably read as "be expected." For example, "expect(s) ..." ("..." may be expressed, for example, as a that clause, a to-infinitive, etc.) may be interchangeably read as "be expected ...." "does not expect ..." may be interchangeably read as "be not expected ...." Furthermore, "An apparatus A is not expected ..." may be interchangeably read as "an apparatus B other than apparatus A does not expect ... from apparatus A" (e.g., if apparatus A is a UE, apparatus B may be a base station).

[0314] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0315] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."

[0316] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, etc., as some non-limiting and non-exhaustive examples.

[0317] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0318] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0319] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0320] In the present disclosure, terms such as "less than or equal to," "less than," "greater than," "more than," "equal to," etc. may be interchangeable. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative, as expressions with "i-th" (i is an arbitrary integer) attached (for example, "highest" may be interchangeable with "i-th highest").

[0321] In this disclosure, the terms "of," "for," "regarding," "related to," "associated with," etc. may be read interchangeably.

[0322] In the present disclosure, terms such as "when A, B," "if A, (then) B," "B upon A," "B in response to A," "B based on A," "B during / while A," "B before A," "B at (the same time as) / on A," "B after A," "B since A," and "B until A" may be interchangeable. Note that A, B, and the like herein may be replaced with appropriate expressions such as nouns, gerunds, and regular sentences, depending on the context. Note that the time difference between A and B may be approximately zero (immediately after or immediately before). A time offset may also be applied to the time at which A occurs. For example, "A" may be interchangeable with "before / after a time offset at which A occurs." The time offset (eg, one or more symbols / slots) may be predefined or may be specified by the UE based on signaled information.

[0323] In the present disclosure, timing, time, duration, time instance, any time unit (e.g., slot, subslot, symbol, subframe), period, occasion, resource, etc. may be read interchangeably.

[0324] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The description of the present disclosure is for illustrative purposes only and does not impose any limiting meaning on the invention according to the present disclosure.

Claims

1. A terminal having: a transmitting unit that transmits information related to a Transmitted Precoding Matrix Indicator (TPMI); and a control unit that controls uplink (UL) transmission using a maximum output power corresponding to the TPMI.

2. The terminal of claim 1, wherein the information indicates one or more TPMI code points and a maximum output power that a corresponding TPMI can achieve.

3. The terminal according to claim 1, wherein the transmitting unit transmits the information in Uplink Control Information (UCI), Medium Access Control Element (MAC CE), UE capability information signaling, or Radio Resource Control (RRC) signaling.

4. The terminal according to claim 1, further comprising a receiving unit that receives a setting related to the TPMI, wherein the control unit controls the UL transmission at full power based on the setting related to the TPMI.

5. A wireless communication method for a terminal, comprising: a step of transmitting information related to a Transmitted Precoding Matrix Indicator (TPMI); and a step of controlling uplink (UL) transmission using a maximum output power corresponding to the TPMI.

6. A base station having: a receiving unit that receives information related to a Transmitted Precoding Matrix Indicator (TPMI); and a control unit that controls reception of uplink (UL) transmission using a maximum output power corresponding to the TPMI.

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