Terminal and communication method

Abstract

A terminal having a receiving unit that receives P-Max, which is setting information for the maximum transmission power in a cell of Frequency Range 1 (FR1) and Frequency Range 2 (FR2), and a control unit that performs any one of the following operations: ignoring P-Max in a cell of FR2 when P-Max in a cell of FR2 is not supported, and considering a cell of FR2 as a regulated cell.

Description

Technology Field

[0001] The present invention relates to a terminal and a communication method in a wireless communication system. Background Technology

[0002] The 3rd Generation Partnership Project (3GPP) is conducting research on a wireless communication method called 5G or NR (New Radio) (hereinafter, the wireless communication method is referred to as 'NR') in order to achieve even higher system capacity, even higher data transmission speeds, and even lower latency in the wireless section. In NR, various wireless technologies are being researched to satisfy the requirement of achieving a throughput of 10 Gbps or more while keeping the latency in the wireless section at 1 ms or less.

[0003] In the case of NR, wireless communication using millimeter waves (extremely high frequency) is being considered, and it is assumed that a wide range of frequencies, extending to even higher frequency bands than LTE (Long Term Evolution), will be used. In particular, as signal loss increases in high frequency bands, the application of beamforming with a narrow beam width is being considered to compensate for such signal loss (e.g., Non-patent Literature 1). Prior art literature

[0004] Non-patent literature 1: 3GPP TS 38.211 V15.0.0(2017-12) The problem to be solved

[0005] P_MAX is the maximum transmit power defined per cell. Currently, 3GPP meetings are reviewing the introduction of P_MAX in FR2. In 3GPP Release 15, it was assumed that P_MAX would not be introduced in FR2. In contrast, in 3GPP Release 16, there is a possibility that P_MAX will be introduced in FR2.

[0006] In cases where, due to the update of the specification, P_MAX is not introduced in FR2 in the old specification, and P_MAX is introduced in FR2 in the updated specification, a method is required to enable the appropriate operation of a terminal that supports the functions of the old specification and does not support the functions of the updated specification when P_MAX of FR2 is notified. means of solving the problem

[0007] According to one embodiment of the present invention, a terminal is provided having a receiving unit that receives P-Max, which is setting information for the maximum transmission power in a cell of Frequency Range 1 (FR1) and Frequency Range 2 (FR2), and a control unit that performs any one of the following operations: ignoring P-Max in a cell of FR2 when P-Max in a cell of FR2 is not supported, and considering a cell of FR2 as a regulated cell. Effects of the invention

[0008] According to an embodiment, in a case where P_MAX is not introduced in FR2 in the old specification and P_MAX is introduced in FR2 in the updated specification, a method is provided to enable the appropriate operation of a terminal that supports the functions of the old specification and does not support the functions of the updated specification when P_MAX of FR2 is notified. Brief explanation of the drawing

[0009] FIG. 1 is a figure showing an example of the configuration of a wireless communication system in an embodiment of the present invention. Figure 2 is a figure showing an example of the configuration of a circuit that performs digital beamforming. Figure 3 is a figure showing an example of a circuit configuration for performing analog beamforming. Figure 4 is a figure showing an example of a circuit configuration for performing hybrid beamforming. FIG. 5 is a figure for explaining the EIRP and CDF during beam forming in an embodiment of the present invention. FIG. 6 is a sequence diagram for explaining the procedure of UE capability reporting in an embodiment of the present invention. FIG. 7 is an example (1) of a specification change in an embodiment of the present invention. FIG. 8 is an example (2) of a specification change in an embodiment of the present invention. FIG. 9 is an example (3) of a specification change in an embodiment of the present invention. FIG. 10 is an example (4) of a specification change in an embodiment of the present invention. FIG. 11 is an example (5) of a specification change in an embodiment of the present invention. FIG. 12 is an example (6) of a specification change in an embodiment of the present invention. FIG. 13 is an example (7) of a specification change in an embodiment of the present invention. FIG. 14 is an example (8) of a specification change in an embodiment of the present invention. FIG. 15 is an example (9) of a specification change in an embodiment of the present invention. FIG. 16 is an example (10) of a specification change in an embodiment of the present invention. FIG. 17 is an example (11) of a specification change in an embodiment of the present invention. FIG. 18 is a figure showing an example of the functional configuration of a base station device (100) in an embodiment of the present invention. FIG. 19 is a figure showing an example of the functional configuration of a terminal (200) in an embodiment of the present invention. FIG. 20 is a figure showing an example of the hardware configuration of a base station device (100) and a terminal (200) in an embodiment of the present invention. Specific details for implementing the invention

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Furthermore, the embodiments described below are examples, and the embodiments to which the present invention is applied are not limited to the following embodiments.

[0011] In the operation of the wireless communication system of the embodiment of the present invention, existing technology is appropriately used. However, the existing technology is, for example, conventional LTE, but is not limited to conventional LTE. Also, unless otherwise specifically stated, the term 'LTE' used in this specification is to have a broad meaning including LTE-Advanced and methods after LTE-Advanced (e.g., NR or 5G).

[0012] In addition, in the embodiments of the present invention described below, terms such as SS (Synchronization Signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), and PRACH (Physical RACH), which are used in conventional LTE, are used. This is for convenience of description, and signals, functions, etc. that are identical to these may be called by other names.

[0013] In addition, in an embodiment of the present invention, the duplex method may be a Time Division Duplex (TDD) method, a Frequency Division Duplex (FDD) method, or other methods (e.g., Flexible Duplex).

[0014] In addition, in the following description, transmitting a signal using the transmit beam may be done by multiplying a precoding vector (precoded by the precoding vector) by the transmit beam. Likewise, receiving a signal using the receive beam may be done by multiplying the received signal by a predetermined weighting vector. Also, transmitting a signal using the transmit beam may be done by transmitting a signal from a specific antenna port. Likewise, receiving a signal using the receive beam may be done by receiving a signal from a specific antenna port. An antenna port refers to a logical antenna port or a physical antenna port defined in the 3GPP standard.

[0015] Furthermore, the method of forming the transmission beam and the reception beam is not limited to the above method. For example, in a base station device (100) or terminal (200) equipped with multiple antennas, a method of changing the angle of each antenna may be used, a method of combining the method of using a precoding vector and the method of changing the antenna angle may be used, a method of switching and using different antenna panels may be used, a method of combining the method of using multiple antenna panels may be used, or other methods may be used. Also, for example, in a high frequency band, multiple different transmission beams may be used. The use of multiple transmission beams is called multi-beam operation, and the use of a single transmission beam is called single-beam operation.

[0016] In addition, in an embodiment of the present invention, the wireless parameters, etc., being 'set' may be pre-configured or defined with a predetermined value, or wireless parameters notified from a base station device (100) or a terminal (200) may be set.

[0017] FIG. 1 is a diagram showing an example of the configuration of a wireless communication system in an embodiment of the present invention. The wireless communication system in an embodiment of the present invention includes a base station device (100) and a terminal (200), as shown in FIG. 1. In FIG. 1, the base station device (100) and the terminal (200) are shown as one each, but this is an example and may each be multiple.

[0018] A base station device (100) is a communication device that provides one or more cells and performs wireless communication with a terminal (200). As shown in FIG. 1, the base station device (100) transmits information regarding power control of the terminal (200) to the terminal (200). Information regarding power control is, for example, a TPC command (Transmission Power Control command) transmitted by DCI (Downlink Control Information). By the TPC command, the absolute value or accumulated value of the transmission power of PUSCH (Physical Uplink Shared Channel) is notified to the terminal (200).

[0019] As illustrated in FIG. 1, the terminal (200) transmits a UE capability report to the base station device (100). The UE capability report is, for example, a power class (PC) according to transmission power. The terminal (200) reports to the base station device (100) whether it corresponds to one of the power classes. Also, as illustrated in FIG. 1, the terminal (200) transmits an uplink transmission signal according to beamforming with transmission power control according to the power class to the base station device (100).

[0020] Figure 2 is a diagram showing an example of a circuit configuration for performing digital beamforming. As a method for realizing beamforming, as shown in Figure 2, digital beamforming is being considered in which a number of Digital Analog Converters (DACs) equal to the number of transmitting antenna elements are provided, and baseband signal processing for precoding is performed as many times as the number of transmitting antenna elements.

[0021] Figure 3 is a diagram showing an example of a circuit configuration for performing analog beamforming. As a method for realizing analog beamforming, as shown in Figure 3, an analog beamforming method is being considered in which beamforming is realized using a variable ideal device in an RF (Radio Frequency) circuit at the next stage after the transmission signal is converted into an analog signal through a DAC.

[0022] Figure 4 is a diagram showing an example of a circuit configuration for performing hybrid beamforming. As shown in Figure 4, a hybrid beamforming is being considered in which beamforming processing is realized by combining digital beamforming and analog beamforming, in both the baseband signal processing that performs precoding and the variable ideal device within the RF circuit.

[0023] FIG. 5 is a diagram for explaining the EIRP and CDF during beamforming in an embodiment of the present invention. FIG. 5 schematically illustrates the antenna characteristics of the terminal (200) during beamforming. As shown in FIG. 5, the antenna characteristics of the terminal (200) during beamforming have directivity.

[0024] The upper part of FIG. 5 shows the antenna characteristics in a horizontal plane, and the main lobe corresponding to the maximum radiation and other sub-lobes are shown. As shown in FIG. 5, since it is a directional antenna, the gain changes significantly depending on the radiation angle. From the dotted line representing the isotropic antenna gain of 0 dBi to the maximum radiation of the main lobe, the antenna gain of the directional antenna of the terminal (200) is shown.

[0025] The lower part of FIG. 5 shows the antenna characteristics of the vertical plane, and the main lobe corresponding to the maximum radiation and other sub-lobes are shown. Since it is assumed that the terminal (200) is on the ground, a hemispherical vertical plane is shown, but in reality, power is radiated in a spherical shape.

[0026] Here, an example of defining the Cumulative Distribution Function (CDF) in Equivalent Isotropic Radiated Power (EIRP) is explained. For power radiated in a spherical shape from an antenna, multiple test points for measuring power are provided in a three-dimensional spherical shape centered on the terminal, and the power at each test point is measured. The CDF is obtained by plotting the ratio of achievable EIRP at each test point as a cumulative distribution.

[0027] As shown in FIG. 5, the maximum radiation of the main lobe of the antenna of the terminal (200) corresponds to the peak EIRP. That is, the CDF becomes 100 percent and the peak EIRP is achieved in the direction in which the antenna of the terminal (200) obtains the maximum antenna gain. At this time, the range from the dotted line representing the isotropic antenna gain of 0 dBi to the leading edge of the main lobe corresponds to the antenna gain. For example, if the transmission power at the antenna connector terminal is 20 dBm and the peak EIRP is 30 dBm, the antenna gain when the peak EIRP is achieved is 10 dB. When the terminal (200) does not achieve the peak EIRP, that is, when the terminal (200) is not transmitting toward the bore site of the antenna, the antenna gain is reduced, for example, to 7 dB, etc.

[0028] Also, in the antenna of the terminal (200) shown in FIG. 5, the EIRP at which the CDF becomes 50% is indicated by a dashed line of 'CDF 50% EIRP'. At this time, the range from the dotted line indicating an isotropic antenna gain of 0 dBi to the position where the EIRP at which the CDF becomes 50% is achieved corresponds to the antenna gain. For example, if the transmission power at the antenna connector terminal is 20 dBm and the EIRP at which the CDF becomes 50% is 24 dBm, the antenna gain is 4 dB.

[0029] FIG. 6 is a sequence diagram for explaining the procedure of reporting UE capability in an embodiment of the present invention. In step S1, the terminal (200) transmits the UE capability according to the transmission power to the base station device (100). As the UE capability according to the transmission power, there is information indicating the power class and spherical coverage. Spherical coverage is a spherical range defined by the EIRP or CDF described in FIG. 5.

[0030] In NR, the power classes included in the notification of UE capability are, for example, the following four.

[0031] 1) FR1 UE power class

[0032] 2) FR2 UE power class

[0033] 3) FR1 UE power class for EN-DC

[0034] 4) FR1 UE power class for NR CA

[0035] The FR (Frequency Range) in the above description represents a frequency band. For example, FR1 may correspond to 450 MHz to 6000 MHz, and FR2 may correspond to 24250 MHz to 52600 MHz. The above frequencies are examples, and the frequencies defining the frequency band may be changed.

[0036] The above 1) FR1 UE power class is a power class defined for each band, having characteristics related to RF characteristics. The above 2) FR2 UE power class is a power class defined for each band, having characteristics related to RF characteristics. The above 3) FR1 UE power class for EN-DC is a power class defined for each band combination, having characteristics based on RF characteristics and baseband processing. EN-DC is dual connectivity that performs communication in both E-UTRA (Evolved Universal Terrestrial Radio Access) and NR. The above 4) FR2 UE power class for NR CA is a power class defined for each band combination, having characteristics based on RF characteristics and baseband processing. NR CA is Carrier Aggregation (CA) in NR.

[0037] For example, the power class in EN-DC may be defined based on the LTE power class and the NR power class. For example, the maximum power class among the LTE power class and the NR power class may be defined as the power class in EN-DC. Also, for example, the sum of the LTE power class and the NR power class may be defined as the power class in EN-DC.

[0038] The power class of EN-DC may be determined according to the implementation of the power amplifier and RF circuit of the terminal (200). For example, when the power amplifier and RF circuit are common in LTE and NR, the maximum power class between the power class of LTE and the power class of NR may be determined as the power class in EN-DC. Also, for example, when the power amplifier and RF circuit are independent in LTE and NR, the sum of the power class of LTE and the power class of NR may be determined as the power class in EN-DC.

[0039] The power class of NR in FR1 may be defined in the same way as LTE. That is, a default power class may be defined for each band. A default power class is a predetermined power class. If the terminal (200) corresponds only to the default power class, the default power class is not included in the signaling of the UE capability, and only the corresponding frequency band is included. Only if the terminal (200) corresponds to another power class in addition to the default power class, the other power class is included in the signaling of the UE capability.

[0040] Here, regarding the power class of NR in FR2, a default power class is not specified for each band, and the power class may be changed according to the use or characteristics of the terminal (200). However, no detailed power class definition in FR2 has been considered. Also, no detailed power class definition has been considered for NR CA or EN-DC. In particular, when P_CMAX, the maximum transmission power of each RAT (Radio Access Technology), is suppressed to below the power class from P_MAX, the maximum transmission power specified for each cell, P_CMAX for EN-DC is not specified.

[0041] The first reporting procedure regarding UE capability is described below. Table 1 is an example in which the default power class and spherical coverage, and additional power class and spherical coverage are specified for each terminal type for each NR frequency band of FR2.

[0042]

[0043] The 'Band number' shown in Table 1 identifies each band. Also, the terminal type 'UE types' include 'Mobile' indicating a mobile terminal (200) and 'Fixed' indicating a fixed terminal (200). The terminal (200) reports the 'Band number' corresponding to the connectable band and the 'UE types' to the base station device (100) by including them in the UE capability.

[0044] The 'Default PC / Spherical coverage' shown in Table 1 is a default power class and spherical coverage, which is pre-defined for each band and terminal type, and does not need to be reported from the terminal (200) to the base station device (100) as a UE capability. The 'Additional PC / Spherical coverage' shown in Table 1 is a power class and spherical coverage added in addition to the default power class and spherical coverage, and is reported from the terminal (200) to the base station device (100) as a UE capability.

[0045] In the first example shown in Table 1, when the 'Band number' is 'n256' and the 'UE types' are 'Mobile', the default power class is '23 dBm', and the spherical coverage is indicated by EIRP 20 dBm and CDF 20 percentile, and no additional power classes or spherical coverage are supported. Here, the spherical coverage corresponding to the default power class may be indicated by CDF 20 percentile, ranging from EIRP 20 dBm to 23 dBm.

[0046] In the second example shown in Table 1, when the 'Band number' is 'n256' and the 'UE types' are 'Fixed', the default power class is '26 dBm', and the spherical coverage is indicated by EIRP 23 dBm and CDF 95 percentile, and the additional power class is '30 dBm', and the spherical coverage is indicated by EIRP 27 dBm and CDF 95 percentile. Here, the spherical coverage corresponding to the default power class may be indicated by EIRP 23 dBm to 26 dBm and CDF 95 percentile, and the spherical coverage corresponding to the additional power class may be indicated by EIRP 27 dBm to 30 dBm and CDF 95 percentile.

[0047] In the third example shown in Table 1, when the 'Band number' is 'n257' and the 'UE types' are 'Mobile', the default power class is '23 dBm' and the spherical coverage is indicated by EIRP 20 dBm and CDF 20 percentile, and the additional power class is '26 dBm' and the spherical coverage is indicated by EIRP 23 dBm and CDF 20 percentile. Here, the spherical coverage corresponding to the default power class may be indicated by EIRP 20 dBm to 23 dBm and CDF 20 percentile, and the spherical coverage corresponding to the additional power class may be indicated by EIRP 23 dBm to 26 dBm and CDF 20 percentile.

[0048] In the fourth example shown in Table 1, when the 'Band number' is 'n257' and the 'UE types' are 'Mobile', the default power class is '30 dBm' and the spherical coverage is indicated by EIRP 27 dBm and CDF 95 percentile, and the additional power class is '33 dBm' and the spherical coverage is indicated by EIRP 30 dBm and CDF 95 percentile. Here, the spherical coverage corresponding to the default power class may be indicated by EIRP 27 dBm to 30 dBm and CDF 95 percentile, and the spherical coverage corresponding to the additional power class may be indicated by EIRP 30 dBm to 33 dBm and CDF 95 percentile.

[0049] The second reporting procedure regarding UE capability is described below. In the second reporting procedure, if the terminal (200) corresponds only to the default power class, only the corresponding frequency band is included in the signaling of the UE capability and is not included in the default power class. Only if the terminal (200) corresponds to another power class in addition to the default power class, the other power class is included in the signaling of the UE capability. Furthermore, for each NR frequency band of FR2, a square coverage class as shown in Table 2 is defined for each power class, and the terminal (200) includes the corresponding square coverage class in the signaling of the UE capability. Alternatively, a square coverage class may be defined in common to multiple power classes, or a square coverage class may be defined independently of the power class.

[0050]

[0051] As shown in Table 2, the spherical coverage class is defined by EIRP and CDF. In the first example shown in Table 2, the spherical coverage class '1' is defined with an EIRP of 20 dBm and a CDF of 20%. In the second example shown in Table 2, the spherical coverage class '2' is defined with an EIRP of 30 dBm and a CDF of 50%. In the third example shown in Table 2, the spherical coverage class '3' is defined with an EIRP of 40 dBm and a CDF of 95%.

[0052] The terminal (200) reports to the base station device (100) a spherical coverage class corresponding to the default power class, along with the supported frequency band number, by including it in the UE capability. In cases where a spherical coverage class is defined in common to multiple power classes or independently of a power class, the spherical coverage class may be reported to the base station device (100) as a UE capability independently of the default power class.

[0053] When the terminal (200) supports a power class other than the default power class along with the supported frequency band number, it includes the spherical coverage class corresponding to the supported power class in the UE capability and reports it to the base station device (100). When a spherical coverage class is defined in common to multiple power classes or independently of a power class, the spherical coverage class may be reported to the base station device (100) as a UE capability independently of the power class other than the default power class.

[0054] In addition, the spherical coverage class may be defined as EIRP and CDF as shown in Table 2, may be defined as EIRP only, or may be defined as CDF only.

[0055] Table 3 is another example defining spherical coverage classes.

[0056] Spherical coverage class EIRP [dBm] CDF [%] 1 20 20 or more and less than 50 2 20 50 or more 3 30 50 or more 4 40 95 or higher

[0057] As shown in Table 3, the spherical coverage class may be defined by EIRP and CDF within a specified range. In the first example shown in Table 3, the spherical coverage class '1' is defined such that the EIRP is 20 dBm and the CDF is 20% or more and less than 50%. In the second example shown in Table 3, the spherical coverage class '2' is defined such that the EIRP is 20 dBm and the CDF is 50% or more. In the third example shown in Table 3, the spherical coverage class '3' is defined such that the EIRP is 30 dBm and the CDF is 50% or more. In the fourth example shown in Table 3, the spherical coverage class '4' is defined such that the EIRP is 40 dBm and the CDF is 95% or more.

[0058] Table 4 is another example defining spherical coverage classes.

[0059] Spherical coverage class EIRP [dBm] CDF [%] 1 20 or more 20 2 20 or more 50 3 30 or more 50 4 40 or more 95

[0060] As shown in Table 4, the spherical coverage class may be defined by a predetermined range of EIRP and CDF. In the first example shown in Table 4, the spherical coverage class '1' is defined with an EIRP of 20 dBm or more and a CDF of 20%. In the second example shown in Table 3, the spherical coverage class '2' is defined with an EIRP of 20 dBm or more and a CDF of 50%. In the third example shown in Table 3, the spherical coverage class '3' is defined with an EIRP of 30 dBm or more and a CDF of 50%. In the fourth example shown in Table 3, the spherical coverage class '4' is defined with an EIRP of 40 dBm or more and a CDF of 95%.

[0061] The definition of a power class in NR CA is explained below. In NR CA, a default power class may be defined for each band combination of NR CA, separate from cases where CA is not applied. When the terminal (200) corresponds only to the default power class, the corresponding power class is not included in the signaling of the UE capability, and only the corresponding band combination is included. Only when the terminal (200) corresponds to another power class in addition to the default power class, the other power class is included in the signaling of the UE capability and notified to the base station device (100). Furthermore, in NR CA, both the frequency band included in FR1 and the frequency band included in FR2 may be used.

[0062] The definition of a power class in EN-DC is explained below. Similar to the power class in NR CA above, a default power class may be defined for each EN-DC band combination. When the terminal (200) corresponds only to the default power class, the default power class is not included in the signaling of the UE capability, and only the corresponding band combination is included. Only when the terminal (200) corresponds to another power class in addition to the default power class, the other power class is included in the signaling of the UE capability and notified to the base station device (100).

[0063] In addition, CA may be applied in the NR of the EN-DC band combination. The following 1) to 5) are examples of power class definitions in the EN-DC band combination. By defining power classes as in the following 1) to 5), desired transmission power control can be performed.

[0064] 1) For each EN-DC band combination, the sum of the power class of the LTE frequency band and the power class of the NR CA band combination may be defined as the power class of the corresponding EN-DC band combination.

[0065] 2) For each EN-DC band combination, the larger of the sum of the power class of the LTE frequency band and the power class of the NR CA band combination may be defined as the power class of the corresponding EN-DC band combination.

[0066] 3) For each EN-DC band combination, the smaller of the power class of the LTE frequency band and the power class of the NR CA band combination may be defined as the power class of the corresponding EN-DC band combination.

[0067] 4) For each EN-DC band combination, the maximum power class of the LTE frequency band and each power class of the NR CA band combination may be defined as the power class of the corresponding EN-DC band combination.

[0068] 5) For each EN-DC band combination, the minimum power class of the LTE frequency band and each power class of the NR CA band combination may be defined as the power class of the corresponding EN-DC band combination.

[0069] In addition, the base station device (100) may notify the terminal (200) for each EN-DC band combination whether to use any one of the definitions 1) to 5) above as the power class of the EN-DC band combination.

[0070] The definition of the maximum transmission power value P_CMAX in EN-DC is explained below. P_CMAX in LTE or NR may be calculated as follows.

[0071] P_CMAX(LTE)=MIN(PowerClass_LTE, P_MAX(LTE))

[0072] P_CMAX(NR)=MIN(PowerClass_NR, P_MAX(NR))

[0073] In addition, regarding EN-DC, the maximum transmission power allowed in the cell group of the sum of the MCG (Master Cell Group) and SCG (Secondary Cell Group) is newly defined as P_MAX(EN-DC). P_MAX(EN-DC) may be individually notified to the terminal (200) via RRC (Radio Resource Control) signaling.

[0074] P_MAX in EN-DC may be calculated as follows using P_MAX(EN-DC).

[0075] P_CMAX(EN-DC)=MIN{[P_CMAX(LTE)+P_CMAX(NR)], P_MAX(EN-DC), PowerClass(EN-DC)}

[0076] In step S2, the base station device (100) transmits information regarding power control to the terminal (200) based on the UE capability according to the received power received in step S1. The information regarding power control includes, for example, TPC commands, parameters for determining maximum transmission power, etc. In the subsequent step S3, the terminal (200) performs transmission power control based on the information regarding power control received in step S2. For example, the terminal (200) may obtain P_MAX from the received information regarding power control and calculate P_CMAX, or obtain TPC commands from the received information regarding power control and perform transmission power control.

[0077] FIG. 7 is an example (1) of a specification change in an embodiment of the present invention. FIG. 7 describes an example of defining a new power class. As shown in FIG. 7, it is an example of defining spherical coverage in a terminal type 'UE type' and a power class 'Power Class Min Peak EIRP' defined as the minimum peak EIRP. Also, as in Table 1, if the terminal (200) corresponds only to the default power class, the default power class may not be included in the signaling of the UE capability.

[0078] In the first example illustrated in FIG. 7, when the 'NR band' identifying the band is 'n257' and the 'UE type' is 'Handheld', the power class 'Power Class Min Peak EIRP' defined as the minimum peak EIRP is '[21.2-25.2]', and the corresponding spherical coverage is a CDF at the 20th percentile and an EIRP of 18 dBm. In addition, the 'Power Class Min Peak EIRP' is the default power class, the maximum allowable EIRP is 43 dBm, and the maximum transmit power is 23 dBm.

[0079] In the second example illustrated in FIG. 7, when the 'NR band' identifying the band is 'n257' and the 'UE type' is 'Handheld', the power class 'Power Class Min Peak EIRP' defined as the minimum peak EIRP is '26', and the corresponding spherical coverage is a CDF at the 20th percentile and an EIRP of 21 dBm. Additionally, the maximum allowable EIRP is 43 dBm and the maximum transmit power is 26 dBm.

[0080] In the third example illustrated in FIG. 7, when the 'NR band' identifying the band is 'n257' and the 'UE type' is 'FWA (Fixed wireless access)', the power class 'Power Class Min Peak EIRP' defined as the minimum peak EIRP is '36', and the corresponding spherical coverage is a CDF at the 95th percentile and an EIRP of 35 dBm. In addition, the 'Power Class Min Peak EIRP' is the default power class, the maximum allowable EIRP is 55 dBm, and the maximum transmit power is 26 dBm.

[0081] In the fourth example illustrated in FIG. 7, when the 'NR band' identifying the band is 'n257' and the 'UE type' is 'FWA', the power class 'Power Class Min Peak EIRP' defined as the minimum peak EIRP is '26', and the corresponding spherical coverage is a CDF at the 95th percentile and an EIRP of 25 dBm. Additionally, the maximum allowable EIRP is 43 dBm and the maximum transmit power is 23 dBm.

[0082] FIG. 8 is an example (2) of a specification change in an embodiment of the present invention. FIG. 8 describes an example of a new power class definition. As shown in FIG. 8, a spherical coverage class is defined in the terminal type 'UE type' and the power class 'Power Class Min Peak EIRP' defined as Peak EIRP, and the spherical coverage corresponding to the spherical coverage class is defined separately. In addition, as in Table 1, if the terminal (200) corresponds only to the default power class, the default power class may not be included in the signaling of the UE capability.

[0083] In the first example illustrated in 'NR FR2 UE Power Class' of FIG. 8, when the 'NR band' identifying the band is 'n257', the power class defined as the minimum peak EIRP, 'Power Class Min Peak EIRP', is '[21.2-25.2]', and the corresponding spherical coverage class is '1'. In addition, the maximum allowable EIRP is 43 dBm, and the maximum transmit power is 23 dBm.

[0084] In the second example illustrated in 'NR FR2 UE Power Class' of FIG. 8, when the 'NR band' identifying the band is 'n257', the power class defined as the minimum peak EIRP, 'Power Class Min Peak EIRP', is '36.0', and the corresponding spherical coverage class is '2'. Additionally, the maximum allowable EIRP is 43 dBm, and the maximum transmit power is 23 dBm.

[0085] In the third example illustrated in 'NR FR2 UE Power Class' of FIG. 8, when the 'NR band' identifying the band is 'n257', the power class defined as the minimum peak EIRP, 'Power Class Min Peak EIRP', is '36.0', and the corresponding spherical coverage class is '3'. Additionally, the maximum allowable EIRP is 55 dBm, and the maximum transmit power is 26 dBm.

[0086] In the 'NR FR2 UE Spherical Class' of FIG. 8, spherical coverage class '1' indicates that the CDF of the spherical coverage is at the 20th percentile and the EIRP is 15 dBm. Also, spherical coverage class '2' indicates that the CDF of the spherical coverage is at the 50th percentile and the EIRP is 25 dBm. Also, spherical coverage class '3' indicates that the CDF of the spherical coverage is at the 95th percentile and the EIRP is 35 dBm.

[0087] FIG. 9 is an example (3) of a specification change in an embodiment of the present invention. As shown in FIG. 9, P, which is the maximum transmission power specified during MR-DC (Multi RAT DC), EMAX, MR-DC a, signaled to the terminal (200) through the upper layer. Here, MR-DC may refer to EN-DC.

[0088] Also, as shown in FIG. 9, the default power class P in EN-DC PowerClass_Default, EN-DCUnless specifically limited, it may be Power Class 3.

[0089] Also, as shown in FIG. 9, the default power class P in EN-DC PowerClass_Default, EN-DC and P EMAX, MR-DC Based on, maximum transmission power P CMAX is calculated.

[0090] Also, as illustrated in FIG. 9, in a terminal (200) corresponding to a power class higher than the default power class, P EMAX, MR-DC If not notified, P EMAX, MR-DC If notified and the maximum transmit power is below the default power class, ΔP PowerClass, EN-DC ne, P PowerClass, EN-DC -P PowerClass_Default, EN-DC Defined as, and in other cases, ΔP PowerClass, EN-DC is 0.

[0091] In the above-described embodiment, the base station device (100) and the terminal (200) may notify the base station device (100) of a default power class or power class combined with a frequency band and a terminal type, and a square coverage class as UE capabilities. Additionally, the base station device (100) and the terminal (200) may perform transmission power control based on the default power class or power class and the square coverage class. Additionally, the base station device (100) and the terminal (200) may define the maximum transmission power in EN-DC based on the maximum transmission power of each RAT of LTE or NR.

[0092] That is, in a wireless communication system, the user device can perform appropriate transmission power control.

[0093] As mentioned above, P_MAX is the maximum transmit power defined per cell. Currently, 3GPP meetings are reviewing the introduction of P_MAX in FR2. In 3GPP Release 15, it is assumed that P_MAX will not be introduced in FR2. In contrast, in 3GPP Release 16, there is a possibility that P_MAX will be introduced in FR2.

[0094] It is assumed that in Release 16 of 3GPP, P_MAX is introduced in FR2. Also, it is assumed that in Release 15 of 3GPP, P_MAX is not introduced in FR2. In this case, for example, a terminal (200) corresponding to Release 16 can set the maximum transmission power defined for the cell of FR2 based on the P_MAX for FR2 notified by the base station (10). However, if the terminal (200) supports the function of Release 15 and does not support the function of Release 16, even if the P_MAX for FR2 is notified by the base station (100), it is assumed that the P_MAX for FR2 is not notified in the function of Release 15, so the terminal (200) may not be able to properly set the maximum transmission power for the cell of FR2 based on the notified P_MAX for FR2. In addition, the above example uses 3GPP Release 15 and Release 16, but the applicable specifications are not limited to this example. If, due to a specification update, P_MAX is not introduced in FR2 in the old specification, and P_MAX is introduced in FR2 in the updated specification, the same problem as in the above example may occur.

[0095] Accordingly, in the case where P_MAX is not introduced in FR2 in the old specification according to the specification update, and P_MAX is introduced in FR2 in the updated specification, a method is required to enable the terminal (200) to properly operate when P_MAX of FR2 is notified to the terminal (200) that supports the functions of the old specification and does not support the functions of the updated specification.

[0096] (Alt1)

[0097] System Information Block 2 (SIB2) includes information on cell reselection and information on cell reselection within the frequency. For example, in the old specification, if SIB2 contains P_MAX for a cell of FR2, the terminal (200) may be specified to ignore the field of P_MAX for the cell of FR2 and consider that P_MAX for the cell of FR2 is not included, and apply the maximum transmission power specified in the specification.

[0098] System Information Block 4 (SIB4) contains information regarding cell reselection between different frequencies. For example, in the old specification, if SIB4 contains P_MAX for a cell of FR2, the terminal (200) may be specified to ignore the field of P_MAX for the cell of FR2 and consider that P_MAX for the cell of FR2 is not included, and apply the maximum transmission power specified in the specification.

[0099] The information element FrequencyInfoUL-SIB includes basic parameters of the uplink carrier and transmission in the uplink carrier. For example, in the old specification, if the FrequencyInfoUL-SIB includes P_MAX for a cell of FR2, the terminal (200) may be specified to ignore the field of P_MAX for the cell of FR2 and consider that P_MAX for the cell of FR2 is not included, and apply the maximum transmission power specified in the specification.

[0100] In addition, the specification of P_MAX, which is the maximum transmission power specified for each cell, may be changed. For example, in the old specification, if P_MAX for a cell of FR2 is included, the terminal (200) may be specified to ignore the field of P_MAX for the cell of FR2 and consider that P_MAX for the cell of FR2 is not included, and apply the maximum transmission power specified in the specification.

[0101] FIG. 10 is a figure showing an example (4) of a specification change in an embodiment of the present invention. As shown in the example of FIG. 10, in the old specification, when P_MAX for a cell of FR2 is included in SIB2, the terminal (200) may be specified to ignore the field of P_MAX and consider that P_MAX is not included, and apply the maximum transmission power defined in the specification, that is, the maximum transmission power defined as the Power class corresponding to the frequency band of the cell.

[0102] FIG. 11 is an example (5) of a specification change in an embodiment of the present invention. As shown in the example of FIG. 11, in the old specification, when P_MAX for a cell of FR2 is included in SIB4, the terminal (200) may be specified to ignore the field of P_MAX and consider that P_MAX is not included, and apply the maximum transmission power defined in the specification, that is, the maximum transmission power defined as the Power class corresponding to the frequency band of the cell.

[0103] FIG. 12 is a figure showing an example (6) of a specification change in an embodiment of the present invention. As shown in the example of FIG. 12, in the old specification, when P_MAX for a cell of FR2 is included in the FrequencyInfoUL-SIB, the terminal (200) may be specified to ignore the field of P_MAX and consider that P_MAX is not included, and apply the maximum transmission power defined in the specification, that is, the maximum transmission power defined as the Power class corresponding to the frequency band of the cell.

[0104] FIG. 13 is a figure showing an example (7) of a specification change in an embodiment of the present invention. As shown in the example of FIG. 13, in the case where P_MAX for a cell of FR2 is included in the old specification, the terminal (200) may be specified to ignore the field of P_MAX and consider that P_MAX is not included, and apply the maximum transmission power defined in the specification, that is, the maximum transmission power defined as the Power class to which the terminal corresponds for the frequency band of the cell.

[0105] As described above, according to the method of Alt1, in the case where P_MAX is not introduced in FR2 in the old specification and P_MAX is introduced in FR2 in the updated specification, when P_MAX of FR2 is notified to a terminal (200) that supports the functions of the old specification and does not support the functions of the updated specification, the terminal (200) can operate properly.

[0106] (Alt2)

[0107] For example, in the old specifications, if P_MAX for a cell of FR2 is included in SIB2, the terminal (200) may be specified to consider the cell of FR2 as unusable.

[0108] For example, in the old specifications, if P_MAX for the cell of FR2 is included in SIB4, the terminal (200) may be specified to consider the cell of FR2 as unusable.

[0109] For example, in the old specifications, if P_MAX for a cell of FR2 is included in the FrequencyInfoUL-SIB, the terminal (200) may be specified to consider the cell of FR2 as unusable.

[0110] For example, in the old specifications, if P_MAX for a cell of FR2 is included, the terminal (200) may be specified to consider the cell of FR2 as unusable.

[0111] FIG. 14 is a figure showing an example (8) of a specification change in an embodiment of the present invention. As shown in the example of FIG. 14, in the old specification, when P_MAX for the cell of FR2 is included in SIB2, the terminal (200) may be specified to consider the cell of FR2 as unusable.

[0112] FIG. 15 is an example (9) of a specification change in an embodiment of the present invention. As shown in the example of FIG. 15, in the old specification, if P_MAX for the cell of FR2 is included in SIB4, the terminal (200) may be specified to consider the cell of FR2 as unusable.

[0113] FIG. 16 is a figure showing an example (10) of a specification change in an embodiment of the present invention. As shown in the example of FIG. 16, in the old specification, if P_MAX for a cell of FR2 is included in the FrequencyInfoUL-SIB, the terminal (200) may be specified to consider the cell of FR2 as unusable.

[0114] FIG. 17 is a figure showing an example (11) of a specification change in an embodiment of the present invention. As shown in the example of FIG. 17, in the old specification, if P_MAX for a cell of FR2 is included, the terminal (200) may be specified to consider the cell of FR2 as unusable.

[0115] As described above, according to the Alt2 method, in the case where P_MAX is not introduced in FR2 in the old specification and P_MAX is introduced in FR2 in the updated specification, when P_MAX of FR2 is notified to a terminal (200) that supports the functions of the old specification and does not support the functions of the updated specification, the terminal (200) can operate properly.

[0116] (Device configuration)

[0117] Next, an example of the functional configuration of a base station device (100) and a terminal (200) that execute the processing and operations described so far will be explained. The base station device (100) and the terminal (200) each include at least the function of implementing the embodiment. However, the base station device (100) and the terminal (200) may each be equipped with only some of the functions of the embodiment.

[0118] FIG. 18 is a diagram showing an example of the functional configuration of a base station device (100). As shown in FIG. 18, the base station device (100) has a transmitting unit (110), a receiving unit (120), a setting information management unit (130), and a power setting unit (140). The functional configuration shown in FIG. 18 is merely an example. Any functional classification and the name of the functional unit may be used as long as it enables the operation according to an embodiment of the present invention.

[0119] The transmitting unit (110) includes the function of generating a signal to be transmitted to a terminal (200) and transmitting the signal wirelessly. The receiving unit (120) includes the function of receiving various signals including NR-PUSCH transmitted from the terminal (200) and obtaining information of, for example, a higher layer from the received signal. Also, the receiving unit (120) demodulates NR-PUSCH based on PT-RS received from the terminal (200). Also, the transmitting unit (110) has the function of transmitting NR-PSS, NR-SSS, NR-PBCH, NR-PDCCH, or NR-PDSCH, etc. to the terminal (200). Also, the transmitting unit (110) transmits various reference signals, for example, DM-RS, to the terminal (200).

[0120] The setting information management unit (130) stores setting information that is pre-set and various setting information that is transmitted to the terminal (200). The contents of the setting information include, for example, information regarding the transmission power control of the terminal (200).

[0121] As described in the embodiment, the power setting unit (140) transmits information regarding power control from the base station device (100) to the terminal (200). Additionally, the function unit for transmission to the terminal (200) in the power setting unit (140) may be included in the transmission unit (110), and the function unit for reception from the terminal (200) in the power setting unit (140) may be included in the reception unit (120).

[0122] FIG. 19 is a diagram showing an example of a functional configuration of a terminal (200). As shown in FIG. 19, the terminal (200) has a transmitting unit (210), a receiving unit (220), a setting information management unit (230), and a power control unit (240). The functional configuration shown in FIG. 19 is merely an example. Any functional classification and the name of the functional unit may be used as long as it is capable of performing an operation according to an embodiment of the present invention.

[0123] The transmitting unit (210) creates a transmission signal from transmission data and transmits the transmission signal wirelessly. In addition, the transmitting unit (210) transmits a signal including various reference signals, for example, PT-RS and NR-PUSCH corresponding to the PT-RS, to the base station device (100). The receiving unit (220) receives various signals wirelessly and obtains a signal of a higher layer from the received physical layer signal. In addition, the receiving unit (220) has the function of receiving NR-PSS, NR-SSS, NR-PBCH, NR-PDCCH, or NR-PDSCH, etc., transmitted from the base station device (100). In addition, the transmitting unit (210) transmits an uplink signal to the base station device (100), and the receiving unit (220) receives various reference signals, for example, DM-RS, PT-RS, etc., from the base station device (100). The setting information management unit (230) stores various setting information received from the base station device (100) by the receiving unit (220). In addition, the setting information management unit (230) also stores setting information that is pre-set. The contents of the setting information include, for example, information regarding the transmission power control of the terminal (200).

[0124] The power control unit (240) transmits the UE capability according to the transmission power to the base station device (100) as described in the embodiment. In addition, the power control unit (240) performs transmission power control based on information regarding power control received from the base station device (100). Furthermore, the function unit for transmission to the base station device (100) in the power control unit (240) may be included in the transmission unit (210), and the function unit for reception from the base station device (100) in the power control unit (240) may be included in the reception unit (220).

[0125] (Hardware Configuration)

[0126] The functional configuration diagrams (Figs. 18 and 19) used in the description of the embodiments of the present invention described above represent blocks of functional units. These functional blocks (components) are realized by any combination of hardware and / or software. Furthermore, the means of realizing each functional block are not particularly limited. That is, each functional block may be realized by a single device in which multiple elements are combined physically and / or logically, or by connecting two or more physically and / or logically separated devices directly and / or indirectly (e.g., wired and / or wireless) and realizing them by these multiple devices.

[0127] In addition, for example, the base station device (100) and the terminal (200) in one embodiment of the present invention may both function as computers that perform processing according to the embodiment of the present invention. FIG. 20 is a diagram showing an example of the hardware configuration of a wireless communication device, which is a base station device (100) or a terminal (200) according to an embodiment of the present invention. The base station device (100) and the terminal (200) described above may each be physically configured as computer devices including a processor (1001), a memory device (1002), an auxiliary memory device (1003), a communication device (1004), an input device (1005), an output device (1006), a bus (1007), etc.

[0128] In addition, in the following description, the word 'device' may be replaced with circuit, device, unit, etc. The hardware configuration of the base station device (100) and the terminal (200) may be configured to include one or more of each device shown as 1001 to 1006 in the drawing, or it may be configured without including some of the devices.

[0129] Each function of the base station device (100) and the terminal (200) is realized by reading a predetermined software (program) onto hardware such as a processor (1001) and a memory device (1002), thereby allowing the processor (1001) to perform calculations and controlling communication by a communication device (1004), and the reading and / or writing of data in the memory device (1002) and the auxiliary memory device (1003).

[0130] The processor (1001) controls the entire computer by operating, for example, an operating system. The processor (1001) may be composed of a central processing unit (CPU) including an interface with peripheral devices, a control unit, an arithmetic unit, registers, etc.

[0131] Additionally, the processor (1001) reads a program (program code), a software module, or data from an auxiliary storage device (1003) and / or a communication device (1004) into a memory device (1002) and performs various processes accordingly. As a program, a program that executes at least a part of the operation described in the above-described embodiment on a computer is used. For example, the transmitting unit (110), receiving unit (120), setting information management unit (130), and power setting unit (140) of the base station device (100) shown in FIG. 18 may be realized by a control program that is stored in the memory device (1002) and operates on the processor (1001). In addition, for example, the transmitting unit (210), the receiving unit (220), the setting information management unit (230), and the power control unit (240) of the terminal (200) illustrated in FIG. 19 may be realized by a control program that is stored in a memory device (1002) and operates on a processor (1001). Although the above-described various processing is explained as being executed on a single processor (1001), it may be executed simultaneously or sequentially by two or more processors (1001). The processor (1001) may be implemented as one or more chips. In addition, the program may be transmitted from a network via an electrical communication line.

[0132] The memory device (1002) is a computer-readable recording medium and may be composed of at least one of, for example, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. The memory device (1002) may be called a register, cache, main memory (main memory), etc. The memory device (1002) may store an executable program (program code), software module, etc., to perform processing according to one embodiment of the present invention.

[0133] The auxiliary storage device (1003) is a computer-readable recording medium and may be composed of at least one of the following: an optical disc such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disc, a digital multi-purpose disc, a Blu-ray disc), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy disk, a magnetic strip, etc. The auxiliary storage device (1003) may be called an auxiliary storage device. The above-described storage medium may be, for example, a database, a server, or other suitable medium including the storage device (1002) and / or the auxiliary storage device (1003).

[0134] The communication device (1004) is hardware (transmitting and receiving device) for performing communication between computers via a wired and / or wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. For example, the transmitting unit (110) and the receiving unit (120) of the base station device (100) may be realized as the communication device (1004). Also, the transmitting unit (210) and the receiving unit (220) of the terminal (200) may be realized as the communication device (1004).

[0135] The input device (1005) is an input device that receives input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, etc.). The output device (1006) is an output device that performs output to the outside (e.g., display, speaker, LED lamp, etc.). Additionally, the input device (1005) and the output device (1006) may be an integrated configuration (e.g., touch panel).

[0136] Additionally, each device, such as a processor (1001) and a memory device (1002), is connected to a bus (1007) for communicating information. The bus (1007) may be composed of a single bus, or it may be composed of different buses between devices.

[0137] Additionally, the base station device (100) and the terminal (200) may each be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and some or all of each functional block may be realized by said hardware. For example, the processor (1001) may be implemented as at least one of these hardware.

[0138] (Summary of embodiments)

[0139] In this specification, at least the following terminals and communication methods are disclosed.

[0140] A terminal having a receiving unit that receives P-Max, which is setting information for the maximum transmission power in a cell of Frequency Range 1 (FR1) and Frequency Range 2 (FR2), and a control unit that performs any one of the following operations: ignoring P-Max in a cell of FR2 when P-Max in a cell of FR2 is not supported, and considering a cell of FR2 as a regulated cell.

[0141] According to the above configuration, in cases where P_MAX is not introduced in FR2 in the old specification due to a change in specifications, and P_MAX is introduced in FR2 in the updated specification, the terminal can operate properly even if P_MAX of FR2 is notified to a terminal that supports the functions of the old specification and does not support the functions of the updated specification. According to an embodiment, a terminal is provided having a receiving unit that receives P-MAX, which is setting information for the maximum transmission power in the cell of FR2 among Frequency Range 1 (FR1) and Frequency Range 2 (FR2), and a control unit that performs an operation to ignore P-MAX in the cell of FR2 when P-MAX in the cell of FR2 is not supported. In addition, according to an embodiment, a terminal is provided having a receiving unit that receives P-Max, which is setting information for the maximum transmission power in a cell of FR2 among Frequency Range 1 (FR1) and Frequency Range 2 (FR2), and a control unit that performs an operation of considering the cell of FR2 as a regulated cell when the P-Max in the cell of FR2 is not supported.

[0142] The above P_Max may be included in any one of the FrequencyInfoUL-SIBs among System Information Block 2 (SIB2), System Information Block 4 (SIB4), and System Information Block 1 (SIB1).

[0143] The control unit may set a default maximum transmission power for the FR2, defined as a Power class, as the maximum transmission power in the cell of the FR2 when P_Max in the cell of the FR2 is ignored.

[0144] If the control unit above chooses to regard the cell of FR2 as a regulated cell, it may select the cell of FR1.

[0145] A communication method by a terminal comprising the step of receiving P-Max, which is setting information for the maximum transmission power in a cell of Frequency Range 1 (FR1) and Frequency Range 2 (FR2), and performing any one of the following operations: ignoring P-Max in a cell of FR2 when P-Max in a cell of FR2 is not supported, and considering the cell of FR2 as a regulated cell.

[0146] According to the above configuration, in cases where P_MAX is not introduced in FR2 in the old specification due to a change in specifications, and P_MAX is introduced in FR2 in the updated specification, even if P_MAX of FR2 is notified to a terminal that supports the functions of the old specification and does not support the functions of the updated specification, the terminal can operate properly.

[0147] (Supplement to the embodiment)

[0148] Although embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various variations, modifications, substitutions, and alternatives. Although specific numerical examples have been used to aid in understanding the invention, unless otherwise noted, these numerical values ​​are merely examples and any appropriate value may be used. The distinction between items in the above description is not essential to the present invention, and matters described in two or more items may be combined as needed, and matters described in any item may be applied to matters described in another item (as long as they do not contradict each other). The boundaries of functional parts or processing parts in a functional block diagram do not necessarily correspond to the boundaries of physical parts. The operation of multiple functional parts may be performed physically in a single part, or the operation of a single functional part may be performed physically by multiple parts. Regarding the processing sequence described in the embodiments, the order of processing may be changed as long as there is no contradiction. For convenience of explanation, the base station device (100) and the terminal (200) have been described using functional block diagrams, but such devices may be realized as hardware, software, or a combination thereof. Software operated by a processor of the base station device (100) according to an embodiment of the present invention and software operated by a processor of the terminal (200) according to an embodiment of the present invention may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.

[0149] In addition, the notification of information is not limited to the forms / embodiments described in this specification and may be performed in other ways. For example, the notification of information may be performed by physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof. In addition, RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.

[0150] Each form / embodiment described in this specification may be applied to systems using LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), other suitable systems, and / or next-generation systems extended based thereon.

[0151] The processing steps, sequences, flowcharts, etc. of each form / embodiment described herein may be changed in order unless there is a contradiction. For example, regarding the method described herein, various step elements are presented in an exemplary order and are not limited to the specific order presented.

[0152] In the present specification, a specific operation performed by the base station device (100) may, in some cases, be performed by an upper node. In a network consisting of one or more network nodes having a base station device (100), it is evident that various operations performed for communication with a terminal (200) can be performed by the base station device (100) and / or other network nodes other than the base station device (100) (e.g., an MME or an S-GW, but not limited thereto). Although the above example illustrates a case where there is only one network node other than the base station device (100), a combination of multiple other network nodes (e.g., an MME and an S-GW) may also be used.

[0153] Each form / embodiment described in this specification may be used alone, in combination, or switched according to practice.

[0154] Depending on the person skilled in the art, the terminal (200) may 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 several other appropriate terms.

[0155] The base station device (100) may be referred to by NB (NodeB), eNB (enhanced NodeB), gNB, Base Station, or several other appropriate terms depending on the person skilled in the art.

[0156] The terms 'determining' and 'determining' as used in this specification may include a wide variety of operations. 'Determining' and 'determining' may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, database, or other data structure), and ascertaining, deeming that such actions have been 'determined' or 'determined'. Furthermore, 'determining' and 'determining' may include receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, and accessing (e.g., accessing data in memory), deeming that such actions have been 'determined' or 'determined'. Furthermore, 'judgment' and 'decision' may include considering that resolving, selecting, choosing, establishing, comparing, etc., have been 'judgmented' or 'decision'. That is, 'judgment' and 'decision' may include considering that a certain action has been 'judgmented' or 'decision'.

[0157] As used in this specification, the term "based on" does not mean "based only on" unless specifically stated otherwise. In other words, the term "based on" means both "based only on" and "based at least on".

[0158] Insofar as 'include', 'including', and variations thereof are used in this specification or claims, these terms are intended to be inclusive, just like the term 'comprising'. Additionally, the term 'or' as used in this specification or claims is not intended to be an exclusive disjunction.

[0159] Throughout the entire disclosure, where articles are added due to translation, such as a, an, and the in English, these articles may include the plural unless the context clearly indicates otherwise.

[0160] In addition, in an embodiment of the present invention, the power control unit (240) is an example of a control unit. The power setting unit (140) is an example of a setting unit. The transmitting unit (210) is an example of a notification unit or a transmitting unit. The receiving unit (120) is an example of an acquisition unit or a receiving unit. 'Band number' is an example of information indicating a frequency band. 'UE types' is an example of information indicating the type of user device. LTE is an example of the first RAT. NR is an example of the second RAT.

[0161] Although the present invention has been described in detail above, it is evident to those skilled in the art that the present invention is not limited to the embodiments described herein. The present invention may be practiced in modified and altered forms without departing from the spirit and scope of the invention as defined by the claims. Accordingly, the description in this specification is intended for illustrative purposes only and is not intended to have any restrictive meaning regarding the present invention. Explanation of the symbols

[0162] 100 base station devices 200 terminals 110 Transmitter 120 receiver 130 Configuration Information Management Department 140 Power setting section 200 user devices 210 Transmitter 220 receiver 230 Configuration Information Management Department 240 Power Control Unit 1001 processor 1002 memory unit 1003 Secondary storage device 1004 communication device 1005 Input device 1006 Output device

Claims

Claim 1 A terminal comprising: a receiver that receives setting information for a maximum transmission power in a cell of Frequency Range 1 (FR1), which is a first frequency band, and Frequency Range 2 (FR2), which is a second frequency band; and a control unit that ignores the setting information in the cell of FR2, wherein the control unit sets a maximum transmission power for FR2 defined for each Power class as the maximum transmission power in the cell of FR2 when the setting information in the cell of FR2 is ignored. Claim 2 In claim 1, the above setting information is a terminal included in at least one of the FrequencyInfoUL-SIB among System Information Block 2 (SIB2), System Information Block 4 (SIB4), and System Information Block 1 (SIB1). Claim 3 delete Claim 4 A terminal according to claim 1, wherein the control unit ignores the setting information in the cell of FR2 when it does not support the setting information in the cell of FR2. Claim 5 A communication method by a terminal comprising: receiving setting information for a maximum transmission power in a cell of FR2 among a first frequency range, Frequency Range 1 (FR1), and a second frequency range, Frequency Range 2 (FR2); ignoring the setting information in the cell of FR2; and, when the setting information in the cell of FR2 is ignored, setting a maximum transmission power for FR2 defined for each Power class as the maximum transmission power in the cell of FR2. Claim 6 A wireless communication system comprising a terminal and a base station, wherein the terminal comprises: a receiving unit that receives setting information for a maximum transmission power in a cell of Frequency Range 1 (FR1), which is a first frequency band, and Frequency Range 2 (FR2), which is a second frequency band; and a control unit that ignores the setting information in the cell of FR2; and the base station comprises: a transmitting unit that transmits the setting information; and the control unit, when ignoring the setting information in the cell of FR2, sets a maximum transmission power for FR2 defined for each Power class as the maximum transmission power in the cell of FR2.

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